Fix #140, system log messages work

more progress

.travis.yml

@@ -1,4 +1,12 @@
 language: objective-c
-xcode_project: Example/UICatalog.xcodeproj
-xcode_scheme: UICatalog
+xcode_workspace: FLEX.xcworkspace
 xcode_sdk: iphonesimulator
+before_install:
+    - gem install xcpretty
+matrix:
+    include:
+        - xcode_scheme: UICatalog
+        - xcode_scheme: FLEX
+script:
+    - set -o pipefail
+    - xcodebuild -workspace $TRAVIS_XCODE_WORKSPACE -scheme $TRAVIS_XCODE_SCHEME -sdk $TRAVIS_XCODE_SDK build | xcpretty

CONTRIBUTING.md

@@ -0,0 +1,3 @@
+# Contributing to FLEX #
+
+We welcome contributions! Please open a pull request with your changes. 

Classes/Editing/ArgumentInputViews/FLEXArgumentInputColorView.m

@@ -228,7 +228,7 @@
     CGFloat hexLabelOriginY = CGRectGetMaxY(self.colorPreviewBox.frame) - self.colorPreviewBox.layer.borderWidth - self.hexLabel.frame.size.height;
     self.hexLabel.frame = CGRectMake(hexLabelOriginX, hexLabelOriginY, self.hexLabel.frame.size.width, self.hexLabel.frame.size.height);
     
-    NSArray *colorComponentInputViews = @[self.alphaInput, self.redInput, self.greenInput, self.blueInput];
+    NSArray<FLEXColorComponentInputView *> *colorComponentInputViews = @[self.alphaInput, self.redInput, self.greenInput, self.blueInput];
     for (FLEXColorComponentInputView *inputView in colorComponentInputViews) {
         CGSize fitSize = [inputView sizeThatFits:constrainSize];
         inputView.frame = CGRectMake(0, runningOriginY, fitSize.width, fitSize.height);

Classes/Editing/ArgumentInputViews/FLEXArgumentInputFontsPickerView.h

@@ -1,6 +1,6 @@
 //
 //  FLEXArgumentInputFontsPickerView.h
-//  UICatalog
+//  FLEX
 //
 //  Created by 啟倫 陳 on 2014/7/27.
 //  Copyright (c) 2014年 f. All rights reserved.

Classes/Editing/ArgumentInputViews/FLEXArgumentInputFontsPickerView.m

@@ -1,6 +1,6 @@
 //
 //  FLEXArgumentInputFontsPickerView.m
-//  UICatalog
+//  FLEX
 //
 //  Created by 啟倫 陳 on 2014/7/27.
 //  Copyright (c) 2014年 f. All rights reserved.
@@ -11,7 +11,7 @@
 
 @interface FLEXArgumentInputFontsPickerView ()
 
-@property (nonatomic, strong) NSMutableArray *availableFonts;
+@property (nonatomic, strong) NSMutableArray<NSString *> *availableFonts;
 
 @end
 
@@ -35,7 +35,7 @@
     if ([self.availableFonts indexOfObject:inputValue] == NSNotFound) {
         [self.availableFonts insertObject:inputValue atIndex:0];
     }
-    [(UIPickerView*)self.inputTextView.inputView selectRow:[self.availableFonts indexOfObject:inputValue] inComponent:0 animated:NO];
+    [(UIPickerView *)self.inputTextView.inputView selectRow:[self.availableFonts indexOfObject:inputValue] inComponent:0 animated:NO];
 }
 
 - (id)inputValue
@@ -56,7 +56,7 @@
 
 - (void)createAvailableFonts
 {
-    NSMutableArray *unsortedFontsArray = [NSMutableArray array];
+    NSMutableArray<NSString *> *unsortedFontsArray = [NSMutableArray array];
     for (NSString *eachFontFamily in [UIFont familyNames]) {
         for (NSString *eachFontName in [UIFont fontNamesForFamilyName:eachFontFamily]) {
             [unsortedFontsArray addObject:eachFontName];
@@ -90,7 +90,7 @@
         fontLabel = (UILabel*)view;
     }
     UIFont *font = [UIFont fontWithName:self.availableFonts[row] size:15.0];
-    NSDictionary *attributesDictionary = [NSDictionary dictionaryWithObject:font forKey:NSFontAttributeName];
+    NSDictionary<NSString *, id> *attributesDictionary = [NSDictionary<NSString *, id> dictionaryWithObject:font forKey:NSFontAttributeName];
     NSAttributedString *attributesString = [[NSAttributedString alloc] initWithString:self.availableFonts[row] attributes:attributesDictionary];
     fontLabel.attributedText = attributesString;
     [fontLabel sizeToFit];

Classes/Editing/ArgumentInputViews/FLEXArgumentInputJSONObjectView.h

@@ -8,6 +8,7 @@
 
 #import "FLEXArgumentInputTextView.h"
 
+#warning TODO This is never supported
 @interface FLEXArgumentInputJSONObjectView : FLEXArgumentInputTextView
 
 @end

Classes/Editing/ArgumentInputViews/FLEXArgumentInputNumberView.m

@@ -35,7 +35,7 @@
 
 + (BOOL)supportsObjCType:(const char *)type withCurrentValue:(id)value
 {
-    static NSArray *primitiveTypes = nil;
+    static NSArray<NSString *> *primitiveTypes = nil;
     static dispatch_once_t onceToken;
     dispatch_once(&onceToken, ^{
         primitiveTypes = @[@(@encode(char)),

Classes/Editing/ArgumentInputViews/FLEXArgumentInputStructView.m

@@ -12,7 +12,7 @@
 
 @interface FLEXArgumentInputStructView ()
 
-@property (nonatomic, strong) NSArray *argumentInputViews;
+@property (nonatomic, strong) NSArray<FLEXArgumentInputView *> *argumentInputViews;
 
 @end
 
@@ -22,8 +22,8 @@
 {
     self = [super initWithArgumentTypeEncoding:typeEncoding];
     if (self) {
-        NSMutableArray *inputViews = [NSMutableArray array];
-        NSArray *customTitles = [[self class] customFieldTitlesForTypeEncoding:typeEncoding];
+        NSMutableArray<FLEXArgumentInputView *> *inputViews = [NSMutableArray array];
+        NSArray<NSString *> *customTitles = [[self class] customFieldTitlesForTypeEncoding:typeEncoding];
         [FLEXRuntimeUtility enumerateTypesInStructEncoding:typeEncoding usingBlock:^(NSString *structName, const char *fieldTypeEncoding, NSString *prettyTypeEncoding, NSUInteger fieldIndex, NSUInteger fieldOffset) {
             
             FLEXArgumentInputView *inputView = [FLEXArgumentInputViewFactory argumentInputViewForTypeEncoding:fieldTypeEncoding];
@@ -31,7 +31,7 @@
             inputView.targetSize = FLEXArgumentInputViewSizeSmall;
             
             if (fieldIndex < [customTitles count]) {
-                inputView.title = [customTitles objectAtIndex:fieldIndex];
+                inputView.title = customTitles[fieldIndex];
             } else {
                 inputView.title = [NSString stringWithFormat:@"%@ field %lu (%@)", structName, (unsigned long)fieldIndex, prettyTypeEncoding];
             }
@@ -72,7 +72,7 @@
                 [FLEXRuntimeUtility enumerateTypesInStructEncoding:structTypeEncoding usingBlock:^(NSString *structName, const char *fieldTypeEncoding, NSString *prettyTypeEncoding, NSUInteger fieldIndex, NSUInteger fieldOffset) {
                     
                     void *fieldPointer = unboxedValue + fieldOffset;
-                    FLEXArgumentInputView *inputView = [self.argumentInputViews objectAtIndex:fieldIndex];
+                    FLEXArgumentInputView *inputView = self.argumentInputViews[fieldIndex];
                     
                     if (fieldTypeEncoding[0] == @encode(id)[0] || fieldTypeEncoding[0] == @encode(Class)[0]) {
                         inputView.inputValue = (__bridge id)fieldPointer;
@@ -102,7 +102,7 @@
         [FLEXRuntimeUtility enumerateTypesInStructEncoding:structTypeEncoding usingBlock:^(NSString *structName, const char *fieldTypeEncoding, NSString *prettyTypeEncoding, NSUInteger fieldIndex, NSUInteger fieldOffset) {
             
             void *fieldPointer = unboxedStruct + fieldOffset;
-            FLEXArgumentInputView *inputView = [self.argumentInputViews objectAtIndex:fieldIndex];
+            FLEXArgumentInputView *inputView = self.argumentInputViews[fieldIndex];
             
             if (fieldTypeEncoding[0] == @encode(id)[0] || fieldTypeEncoding[0] == @encode(Class)[0]) {
                 // Object fields
@@ -179,9 +179,9 @@
     return type && type[0] == '{';
 }
 
-+ (NSArray *)customFieldTitlesForTypeEncoding:(const char *)typeEncoding
++ (NSArray<NSString *> *)customFieldTitlesForTypeEncoding:(const char *)typeEncoding
 {
-    NSArray *customTitles = nil;
+    NSArray<NSString *> *customTitles = nil;
     if (strcmp(typeEncoding, @encode(CGRect)) == 0) {
         customTitles = @[@"CGPoint origin", @"CGSize size"];
     } else if (strcmp(typeEncoding, @encode(CGPoint)) == 0) {

Classes/Editing/ArgumentInputViews/FLEXArgumentInputView.m

@@ -22,7 +22,7 @@
 {
     self = [super initWithFrame:CGRectZero];
     if (self) {
-        self.typeEncoding = @(typeEncoding);
+        self.typeEncoding = typeEncoding != NULL ? @(typeEncoding) : nil;
     }
     return self;
 }

Classes/Editing/ArgumentInputViews/FLEXArgumentInputViewFactory.m

@@ -39,26 +39,23 @@
 + (Class)argumentInputViewSubclassForTypeEncoding:(const char *)typeEncoding currentValue:(id)currentValue
 {
     Class argumentInputViewSubclass = nil;
+    NSArray<Class> *inputViewClasses = @[[FLEXArgumentInputColorView class],
+                                         [FLEXArgumentInputFontView class],
+                                         [FLEXArgumentInputStringView class],
+                                         [FLEXArgumentInputStructView class],
+                                         [FLEXArgumentInputSwitchView class],
+                                         [FLEXArgumentInputDateView class],
+                                         [FLEXArgumentInputNumberView class],
+                                         [FLEXArgumentInputJSONObjectView class]];
     
     // Note that order is important here since multiple subclasses may support the same type.
     // An example is the number subclass and the bool subclass for the type @encode(BOOL).
     // Both work, but we'd prefer to use the bool subclass.
-    if ([FLEXArgumentInputColorView supportsObjCType:typeEncoding withCurrentValue:currentValue]) {
-        argumentInputViewSubclass = [FLEXArgumentInputColorView class];
-    } else if ([FLEXArgumentInputFontView supportsObjCType:typeEncoding withCurrentValue:currentValue]) {
-        argumentInputViewSubclass = [FLEXArgumentInputFontView class];
-    } else if ([FLEXArgumentInputStringView supportsObjCType:typeEncoding withCurrentValue:currentValue]) {
-        argumentInputViewSubclass = [FLEXArgumentInputStringView class];
-    } else if ([FLEXArgumentInputStructView supportsObjCType:typeEncoding withCurrentValue:currentValue]) {
-        argumentInputViewSubclass = [FLEXArgumentInputStructView class];
-    } else if ([FLEXArgumentInputSwitchView supportsObjCType:typeEncoding withCurrentValue:currentValue]) {
-        argumentInputViewSubclass = [FLEXArgumentInputSwitchView class];
-    } else if ([FLEXArgumentInputDateView supportsObjCType:typeEncoding withCurrentValue:currentValue]) {
-        argumentInputViewSubclass = [FLEXArgumentInputDateView class];
-    } else if ([FLEXArgumentInputNumberView supportsObjCType:typeEncoding withCurrentValue:currentValue]) {
-        argumentInputViewSubclass = [FLEXArgumentInputNumberView class];
-    } else if ([FLEXArgumentInputJSONObjectView supportsObjCType:typeEncoding withCurrentValue:currentValue]) {
-        argumentInputViewSubclass = [FLEXArgumentInputJSONObjectView class];
+    for (Class inputView in inputViewClasses) {
+        if ([inputView supportsObjCType:typeEncoding withCurrentValue:currentValue]) {
+            argumentInputViewSubclass = inputView;
+            break;
+        }
     }
     
     return argumentInputViewSubclass;

Classes/Editing/FLEXDefaultEditorViewController.h

@@ -6,9 +6,9 @@
 //  Copyright (c) 2014 Flipboard. All rights reserved.
 //
 
-#import "FLEXFieldEditorViewController.h"
+#import "FLEXMutableFieldEditorViewController.h"
 
-@interface FLEXDefaultEditorViewController : FLEXFieldEditorViewController
+@interface FLEXDefaultEditorViewController : FLEXMutableFieldEditorViewController
 
 - (id)initWithDefaults:(NSUserDefaults *)defaults key:(NSString *)key;
 

Classes/Editing/FLEXDefaultEditorViewController.m

@@ -64,6 +64,13 @@
     self.firstInputView.inputValue = [self.defaults objectForKey:self.key];
 }
 
+- (void)getterButtonPressed:(id)sender
+{
+    [super getterButtonPressed:sender];
+    id returnedObject = [self.defaults objectForKey:self.key];
+    [self exploreObjectOrPopViewController:returnedObject];
+}
+
 + (BOOL)canEditDefaultWithValue:(id)currentValue
 {
     return [FLEXArgumentInputViewFactory canEditFieldWithTypeEncoding:@encode(id) currentValue:currentValue];

Classes/Editing/FLEXFieldEditorView.h

@@ -8,11 +8,13 @@
 
 #import <UIKit/UIKit.h>
 
+@class FLEXArgumentInputView;
+
 @interface FLEXFieldEditorView : UIView
 
 @property (nonatomic, copy) NSString *targetDescription;
 @property (nonatomic, copy) NSString *fieldDescription;
 
-@property (nonatomic, strong) NSArray *argumentInputViews;
+@property (nonatomic, strong) NSArray<FLEXArgumentInputView *> *argumentInputViews;
 
 @end

Classes/Editing/FLEXFieldEditorView.m

@@ -103,7 +103,7 @@
     }
 }
 
-- (void)setArgumentInputViews:(NSArray *)argumentInputViews
+- (void)setArgumentInputViews:(NSArray<FLEXArgumentInputView *> *)argumentInputViews
 {
     if (![_argumentInputViews isEqual:argumentInputViews]) {
         

Classes/Editing/FLEXFieldEditorViewController.h

@@ -22,7 +22,11 @@
 @property (nonatomic, strong, readonly) id target;
 @property (nonatomic, strong, readonly) FLEXFieldEditorView *fieldEditorView;
 @property (nonatomic, strong, readonly) UIBarButtonItem *setterButton;
+
 - (void)actionButtonPressed:(id)sender;
 - (NSString *)titleForActionButton;
+/// Pushes an explorer view controller for the given object
+/// or pops the current view controller.
+- (void)exploreObjectOrPopViewController:(id)objectOrNil;
 
 @end

Classes/Editing/FLEXFieldEditorViewController.m

@@ -10,8 +10,10 @@
 #import "FLEXFieldEditorView.h"
 #import "FLEXRuntimeUtility.h"
 #import "FLEXUtility.h"
+#import "FLEXObjectExplorerFactory.h"
 #import "FLEXArgumentInputView.h"
 #import "FLEXArgumentInputViewFactory.h"
+#import "FLEXObjectExplorerViewController.h"
 
 @interface FLEXFieldEditorViewController () <UIScrollViewDelegate>
 
@@ -114,4 +116,16 @@
     return @"Set";
 }
 
+- (void)exploreObjectOrPopViewController:(id)objectOrNil {
+    if (objectOrNil) {
+        // For non-nil (or void) return types, push an explorer view controller to display the object
+        FLEXObjectExplorerViewController *explorerViewController = [FLEXObjectExplorerFactory explorerViewControllerForObject:objectOrNil];
+        [self.navigationController pushViewController:explorerViewController animated:YES];
+    } else {
+        // If we didn't get a returned object but the method call succeeded,
+        // pop this view controller off the stack to indicate that the call went through.
+        [self.navigationController popViewControllerAnimated:YES];
+    }
+}
+
 @end

Classes/Editing/FLEXIvarEditorViewController.h

@@ -6,10 +6,10 @@
 //  Copyright (c) 2014 Flipboard. All rights reserved.
 //
 
-#import "FLEXFieldEditorViewController.h"
+#import "FLEXMutableFieldEditorViewController.h"
 #import <objc/runtime.h>
 
-@interface FLEXIvarEditorViewController : FLEXFieldEditorViewController
+@interface FLEXIvarEditorViewController : FLEXMutableFieldEditorViewController
 
 - (id)initWithTarget:(id)target ivar:(Ivar)ivar;
 

Classes/Editing/FLEXIvarEditorViewController.m

@@ -55,6 +55,17 @@
     
     [FLEXRuntimeUtility setValue:self.firstInputView.inputValue forIvar:self.ivar onObject:self.target];
     self.firstInputView.inputValue = [FLEXRuntimeUtility valueForIvar:self.ivar onObject:self.target];
+    
+    // Pop view controller for consistency;
+    // property setters and method calls also pop on success.
+    [self.navigationController popViewControllerAnimated:YES];
+}
+
+- (void)getterButtonPressed:(id)sender
+{
+    [super getterButtonPressed:sender];
+    id returnedObject = [FLEXRuntimeUtility valueForIvar:self.ivar onObject:self.target];
+    [self exploreObjectOrPopViewController:returnedObject];
 }
 
 - (void)argumentInputViewValueDidChange:(FLEXArgumentInputView *)argumentInputView

Classes/Editing/FLEXMethodCallingViewController.m

@@ -17,6 +17,7 @@
 @interface FLEXMethodCallingViewController ()
 
 @property (nonatomic, assign) Method method;
+@property (nonatomic, assign) FLEXTypeEncoding *returnType;
 
 @end
 
@@ -27,7 +28,8 @@
     self = [super initWithTarget:target];
     if (self) {
         self.method = method;
-        self.title = [self isClassMethod] ? @"Class Method" : @"Method";
+        self.returnType = [FLEXRuntimeUtility returnTypeForMethod:method];
+        self.title = [self isClassMethod] ? @"Class Method" : @"Method";;
     }
     return self;
 }
@@ -36,10 +38,14 @@
 {
     [super viewDidLoad];
     
-    self.fieldEditorView.fieldDescription = [FLEXRuntimeUtility prettyNameForMethod:self.method isClassMethod:[self isClassMethod]];
+    NSString *returnType = @((const char *)self.returnType);
+    NSString *methodDescription = [FLEXRuntimeUtility prettyNameForMethod:self.method isClassMethod:[self isClassMethod]];
+    NSString *format = @"Signature:\n%@\n\nReturn Type:\n%@";
+    NSString *info = [NSString stringWithFormat:format, methodDescription, returnType];
+    self.fieldEditorView.fieldDescription = info;
     
-    NSArray *methodComponents = [FLEXRuntimeUtility prettyArgumentComponentsForMethod:self.method];
-    NSMutableArray *argumentInputViews = [NSMutableArray array];
+    NSArray<NSString *> *methodComponents = [FLEXRuntimeUtility prettyArgumentComponentsForMethod:self.method];
+    NSMutableArray<FLEXArgumentInputView *> *argumentInputViews = [NSMutableArray array];
     unsigned int argumentIndex = kFLEXNumberOfImplicitArgs;
     for (NSString *methodComponent in methodComponents) {
         char *argumentTypeEncoding = method_copyArgumentType(self.method, argumentIndex);
@@ -54,6 +60,12 @@
     self.fieldEditorView.argumentInputViews = argumentInputViews;
 }
 
+- (void)dealloc
+{
+    free(self.returnType);
+    self.returnType = NULL;
+}
+
 - (BOOL)isClassMethod
 {
     return self.target && self.target == [self.target class];
@@ -88,12 +100,11 @@
         [alert show];
     } else if (returnedObject) {
         // For non-nil (or void) return types, push an explorer view controller to display the returned object
+        returnedObject = [FLEXRuntimeUtility potentiallyUnwrapBoxedPointer:returnedObject type:self.returnType];
         FLEXObjectExplorerViewController *explorerViewController = [FLEXObjectExplorerFactory explorerViewControllerForObject:returnedObject];
         [self.navigationController pushViewController:explorerViewController animated:YES];
     } else {
-        // If we didn't get a returned object but the method call succeeded,
-        // pop this view controller off the stack to indicate that the call went through.
-        [self.navigationController popViewControllerAnimated:YES];
+        [self exploreObjectOrPopViewController:returnedObject];
     }
 }
 

Classes/Editing/FLEXMutableFieldEditorViewController.h

@@ -0,0 +1,18 @@
+//
+//  FLEXMutableFieldEditorViewController.h
+//  FLEX
+//
+//  Created by Tanner on 11/22/18.
+//  Copyright © 2018 Flipboard. All rights reserved.
+//
+
+#import "FLEXFieldEditorViewController.h"
+
+@interface FLEXMutableFieldEditorViewController : FLEXFieldEditorViewController
+
+@property (nonatomic, strong, readonly) UIBarButtonItem *getterButton;
+
+- (void)getterButtonPressed:(id)sender;
+- (NSString *)titleForGetterButton;
+
+@end

Classes/Editing/FLEXMutableFieldEditorViewController.m

@@ -0,0 +1,36 @@
+//
+//  FLEXMutableFieldEditorViewController.m
+//  FLEX
+//
+//  Created by Tanner on 11/22/18.
+//  Copyright © 2018 Flipboard. All rights reserved.
+//
+
+#import "FLEXMutableFieldEditorViewController.h"
+#import "FLEXFieldEditorView.h"
+
+@interface FLEXMutableFieldEditorViewController ()
+
+@property (nonatomic, strong, readwrite) UIBarButtonItem *getterButton;
+
+@end
+
+@implementation FLEXMutableFieldEditorViewController
+
+- (void)viewDidLoad {
+    [super viewDidLoad];
+    
+    self.getterButton = [[UIBarButtonItem alloc] initWithTitle:[self titleForGetterButton] style:UIBarButtonItemStyleDone target:self action:@selector(getterButtonPressed:)];
+    self.navigationItem.rightBarButtonItems = @[self.setterButton, self.getterButton];
+}
+
+- (void)getterButtonPressed:(id)sender {
+    // Subclasses can override
+    [self.fieldEditorView endEditing:YES];
+}
+
+- (NSString *)titleForGetterButton {
+    return @"Get";
+}
+
+@end

Classes/Editing/FLEXPropertyEditorViewController.h

@@ -6,10 +6,10 @@
 //  Copyright (c) 2014 Flipboard. All rights reserved.
 //
 
-#import "FLEXFieldEditorViewController.h"
+#import "FLEXMutableFieldEditorViewController.h"
 #import <objc/runtime.h>
 
-@interface FLEXPropertyEditorViewController : FLEXFieldEditorViewController
+@interface FLEXPropertyEditorViewController : FLEXMutableFieldEditorViewController
 
 - (id)initWithTarget:(id)target property:(objc_property_t)property;
 

Classes/Editing/FLEXPropertyEditorViewController.m

@@ -76,6 +76,13 @@
     }
 }
 
+- (void)getterButtonPressed:(id)sender
+{
+    [super getterButtonPressed:sender];
+    id returnedObject = [FLEXRuntimeUtility valueForProperty:self.property onObject:self.target];
+    [self exploreObjectOrPopViewController:returnedObject];
+}
+
 - (void)argumentInputViewValueDidChange:(FLEXArgumentInputView *)argumentInputView
 {
     if ([argumentInputView isKindOfClass:[FLEXArgumentInputSwitchView class]]) {

Classes/ExplorerInterface/FLEXExplorerViewController.h

@@ -0,0 +1,43 @@
+//
+//  FLEXExplorerViewController.h
+//  Flipboard
+//
+//  Created by Ryan Olson on 4/4/14.
+//  Copyright (c) 2014 Flipboard. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@protocol FLEXExplorerViewControllerDelegate;
+
+@interface FLEXExplorerViewController : UIViewController
+
+@property (nonatomic, weak) id <FLEXExplorerViewControllerDelegate> delegate;
+
+- (BOOL)shouldReceiveTouchAtWindowPoint:(CGPoint)pointInWindowCoordinates;
+- (BOOL)wantsWindowToBecomeKey;
+
+/// @brief Used to present (or dismiss) a modal view controller ("tool"), typically triggered by pressing a button in the toolbar.
+///
+/// If a tool is already presented, this method simply dismisses it and calls the completion block.
+/// If no tool is presented, @code future() @endcode is presented and the completion block is called.
+- (void)toggleToolWithViewControllerProvider:(UIViewController *(^)(void))future completion:(void(^)(void))completion;
+
+// Keyboard shortcut helpers
+
+- (void)toggleSelectTool;
+- (void)toggleMoveTool;
+- (void)toggleViewsTool;
+- (void)toggleMenuTool;
+- (void)handleDownArrowKeyPressed;
+- (void)handleUpArrowKeyPressed;
+- (void)handleRightArrowKeyPressed;
+- (void)handleLeftArrowKeyPressed;
+
+@end
+
+@protocol FLEXExplorerViewControllerDelegate <NSObject>
+
+- (void)explorerViewControllerDidFinish:(FLEXExplorerViewController *)explorerViewController;
+
+@end

Classes/ExplorerInterface/FLEXExplorerViewController.m

@@ -14,6 +14,9 @@
 #import "FLEXGlobalsTableViewController.h"
 #import "FLEXObjectExplorerViewController.h"
 #import "FLEXObjectExplorerFactory.h"
+#import "FLEXNetworkHistoryTableViewController.h"
+
+static NSString *const kFLEXToolbarTopMarginDefaultsKey = @"com.flex.FLEXToolbar.topMargin";
 
 typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
     FLEXExplorerModeDefault,
@@ -42,10 +45,10 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
 
 /// Borders of all the visible views in the hierarchy at the selection point.
 /// The keys are NSValues with the correponding view (nonretained).
-@property (nonatomic, strong) NSDictionary *outlineViewsForVisibleViews;
+@property (nonatomic, strong) NSDictionary<NSValue *, UIView *> *outlineViewsForVisibleViews;
 
 /// The actual views at the selection point with the deepest view last.
-@property (nonatomic, strong) NSArray *viewsAtTapPoint;
+@property (nonatomic, strong) NSArray<UIView *> *viewsAtTapPoint;
 
 /// The view that we're currently highlighting with an overlay and displaying details for.
 @property (nonatomic, strong) UIView *selectedView;
@@ -65,7 +68,7 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
 @property (nonatomic, assign) UIStatusBarStyle previousStatusBarStyle;
 
 /// All views that we're KVOing. Used to help us clean up properly.
-@property (nonatomic, strong) NSMutableSet *observedViews;
+@property (nonatomic, strong) NSMutableSet<UIView *> *observedViews;
 
 @end
 
@@ -93,10 +96,14 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
 	
     // Toolbar
     self.explorerToolbar = [[FLEXExplorerToolbar alloc] init];
-    CGSize toolbarSize = [self.explorerToolbar sizeThatFits:self.view.bounds.size];
+
     // Start the toolbar off below any bars that may be at the top of the view.
-    CGFloat toolbarOriginY = 100.0;
-    self.explorerToolbar.frame = CGRectMake(0.0, toolbarOriginY, toolbarSize.width, toolbarSize.height);
+    id toolbarOriginYDefault = [[NSUserDefaults standardUserDefaults] objectForKey:kFLEXToolbarTopMarginDefaultsKey];
+    CGFloat toolbarOriginY = toolbarOriginYDefault ? [toolbarOriginYDefault doubleValue] : 100;
+
+    CGRect safeArea = [self viewSafeArea];
+    CGSize toolbarSize = [self.explorerToolbar sizeThatFits:CGSizeMake(CGRectGetWidth(self.view.bounds), CGRectGetHeight(safeArea))];
+    [self updateToolbarPositionWithUnconstrainedFrame:CGRectMake(CGRectGetMinX(safeArea), toolbarOriginY, toolbarSize.width, toolbarSize.height)];
     self.explorerToolbar.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleBottomMargin | UIViewAutoresizingFlexibleTopMargin;
     [self.view addSubview:self.explorerToolbar];
     [self setupToolbarActions];
@@ -137,10 +144,10 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
     return viewController;
 }
 
-- (NSUInteger)supportedInterfaceOrientations
+- (UIInterfaceOrientationMask)supportedInterfaceOrientations
 {
     UIViewController *viewControllerToAsk = [self viewControllerForRotationAndOrientation];
-    NSUInteger supportedOrientations = [FLEXUtility infoPlistSupportedInterfaceOrientationsMask];
+    UIInterfaceOrientationMask supportedOrientations = [FLEXUtility infoPlistSupportedInterfaceOrientationsMask];
     if (viewControllerToAsk && viewControllerToAsk != self) {
         supportedOrientations = [viewControllerToAsk supportedInterfaceOrientations];
     }
@@ -164,32 +171,30 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
     return shouldAutorotate;
 }
 
-- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
+- (void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id<UIViewControllerTransitionCoordinator>)coordinator
 {
-    for (UIView *outlineView in [self.outlineViewsForVisibleViews allValues]) {
-        outlineView.hidden = YES;
-    }
-    self.selectedViewOverlay.hidden = YES;
-}
+    [coordinator animateAlongsideTransition:^(id<UIViewControllerTransitionCoordinatorContext> context) {
+         for (UIView *outlineView in [self.outlineViewsForVisibleViews allValues]) {
+             outlineView.hidden = YES;
+         }
+         self.selectedViewOverlay.hidden = YES;
+     } completion:^(id<UIViewControllerTransitionCoordinatorContext> context) {
+         for (UIView *view in self.viewsAtTapPoint) {
+             NSValue *key = [NSValue valueWithNonretainedObject:view];
+             UIView *outlineView = self.outlineViewsForVisibleViews[key];
+             outlineView.frame = [self frameInLocalCoordinatesForView:view];
+             if (self.currentMode == FLEXExplorerModeSelect) {
+                 outlineView.hidden = NO;
+             }
+         }
 
-- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
-{
-    for (UIView *view in self.viewsAtTapPoint) {
-        NSValue *key = [NSValue valueWithNonretainedObject:view];
-        UIView *outlineView = self.outlineViewsForVisibleViews[key];
-        outlineView.frame = [self frameInLocalCoordinatesForView:view];
-        if (self.currentMode == FLEXExplorerModeSelect) {
-            outlineView.hidden = NO;
-        }
-    }
-    
-    if (self.selectedView) {
-        self.selectedViewOverlay.frame = [self frameInLocalCoordinatesForView:self.selectedView];
-        self.selectedViewOverlay.hidden = NO;
-    }
+         if (self.selectedView) {
+             self.selectedViewOverlay.frame = [self frameInLocalCoordinatesForView:self.selectedView];
+             self.selectedViewOverlay.hidden = NO;
+         }
+     }];
 }
 
-
 #pragma mark - Setter Overrides
 
 - (void)setSelectedView:(UIView *)selectedView
@@ -205,7 +210,7 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
 
         // Update the toolbar and selected overlay
         self.explorerToolbar.selectedViewDescription = [FLEXUtility descriptionForView:selectedView includingFrame:YES];
-        self.explorerToolbar.selectedViewOverlayColor = [FLEXUtility consistentRandomColorForObject:selectedView];;
+        self.explorerToolbar.selectedViewOverlayColor = [FLEXUtility consistentRandomColorForObject:selectedView];
 
         if (selectedView) {
             if (!self.selectedViewOverlay) {
@@ -231,7 +236,7 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
     }
 }
 
-- (void)setViewsAtTapPoint:(NSArray *)viewsAtTapPoint
+- (void)setViewsAtTapPoint:(NSArray<UIView *> *)viewsAtTapPoint
 {
     if (![_viewsAtTapPoint isEqual:viewsAtTapPoint]) {
         for (UIView *view in _viewsAtTapPoint) {
@@ -261,7 +266,7 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
                 
             case FLEXExplorerModeSelect:
                 // Make sure the outline views are unhidden in case we came from the move mode.
-                for (id key in self.outlineViewsForVisibleViews) {
+                for (NSValue *key in self.outlineViewsForVisibleViews) {
                     UIView *outlineView = self.outlineViewsForVisibleViews[key];
                     outlineView.hidden = NO;
                 }
@@ -269,7 +274,7 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
                 
             case FLEXExplorerModeMove:
                 // Hide all the outline views to focus on the selected view, which is the only one that will move.
-                for (id key in self.outlineViewsForVisibleViews) {
+                for (NSValue *key in self.outlineViewsForVisibleViews) {
                     UIView *outlineView = self.outlineViewsForVisibleViews[key];
                     outlineView.hidden = YES;
                 }
@@ -310,9 +315,9 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
     [self.observedViews removeObject:view];
 }
 
-+ (NSArray *)viewKeyPathsToTrack
++ (NSArray<NSString *> *)viewKeyPathsToTrack
 {
-    static NSArray *trackedViewKeyPaths = nil;
+    static NSArray<NSString *> *trackedViewKeyPaths = nil;
     static dispatch_once_t onceToken;
     dispatch_once(&onceToken, ^{
         NSString *frameKeyPath = NSStringFromSelector(@selector(frame));
@@ -321,7 +326,7 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
     return trackedViewKeyPaths;
 }
 
-- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
+- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary<NSString *, id> *)change context:(void *)context
 {
     [self updateOverlayAndDescriptionForObjectIfNeeded:object];
 }
@@ -330,9 +335,9 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
 {
     NSUInteger indexOfView = [self.viewsAtTapPoint indexOfObject:object];
     if (indexOfView != NSNotFound) {
-        UIView *view = [self.viewsAtTapPoint objectAtIndex:indexOfView];
+        UIView *view = self.viewsAtTapPoint[indexOfView];
         NSValue *key = [NSValue valueWithNonretainedObject:view];
-        UIView *outline = [self.outlineViewsForVisibleViews objectForKey:key];
+        UIView *outline = self.outlineViewsForVisibleViews[key];
         if (outline) {
             outline.frame = [self frameInLocalCoordinatesForView:view];
         }
@@ -367,27 +372,18 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
 
 - (void)selectButtonTapped:(FLEXToolbarItem *)sender
 {
-    if (self.currentMode == FLEXExplorerModeSelect) {
-        self.currentMode = FLEXExplorerModeDefault;
-    } else {
-        self.currentMode = FLEXExplorerModeSelect;
-    }
+    [self toggleSelectTool];
 }
 
 - (void)hierarchyButtonTapped:(FLEXToolbarItem *)sender
 {
-    NSArray *allViews = [self allViewsInHierarchy];
-    NSDictionary *depthsForViews = [self hierarchyDepthsForViews:allViews];
-    FLEXHierarchyTableViewController *hierarchyTVC = [[FLEXHierarchyTableViewController alloc] initWithViews:allViews viewsAtTap:self.viewsAtTapPoint selectedView:self.selectedView depths:depthsForViews];
-    hierarchyTVC.delegate = self;
-    UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:hierarchyTVC];
-    [self makeKeyAndPresentViewController:navigationController animated:YES completion:nil];
+    [self toggleViewsTool];
 }
 
-- (NSArray *)allViewsInHierarchy
+- (NSArray<UIView *> *)allViewsInHierarchy
 {
-    NSMutableArray *allViews = [NSMutableArray array];
-    NSArray *windows = [self allWindows];
+    NSMutableArray<UIView *> *allViews = [NSMutableArray array];
+    NSArray<UIWindow *> *windows = [FLEXUtility allWindows];
     for (UIWindow *window in windows) {
         if (window != self.view.window) {
             [allViews addObject:window];
@@ -397,28 +393,6 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
     return allViews;
 }
 
-- (NSArray *)allWindows
-{
-    BOOL includeInternalWindows = YES;
-    BOOL onlyVisibleWindows = NO;
-
-    NSArray *allWindowsComponents = @[@"al", @"lWindo", @"wsIncl", @"udingInt", @"ernalWin", @"dows:o", @"nlyVisi", @"bleWin", @"dows:"];
-    SEL allWindowsSelector = NSSelectorFromString([allWindowsComponents componentsJoinedByString:@""]);
-
-    NSMethodSignature *methodSignature = [[UIWindow class] methodSignatureForSelector:allWindowsSelector];
-    NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:methodSignature];
-
-    invocation.target = [UIWindow class];
-    invocation.selector = allWindowsSelector;
-    [invocation setArgument:&includeInternalWindows atIndex:2];
-    [invocation setArgument:&onlyVisibleWindows atIndex:3];
-    [invocation invoke];
-
-    __unsafe_unretained NSArray *windows = nil;
-    [invocation getReturnValue:&windows];
-    return windows;
-}
-
 - (UIWindow *)statusWindow
 {
     NSString *statusBarString = [NSString stringWithFormat:@"%@arWindow", @"_statusB"];
@@ -427,20 +401,12 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
 
 - (void)moveButtonTapped:(FLEXToolbarItem *)sender
 {
-    if (self.currentMode == FLEXExplorerModeMove) {
-        self.currentMode = FLEXExplorerModeDefault;
-    } else {
-        self.currentMode = FLEXExplorerModeMove;
-    }
+    [self toggleMoveTool];
 }
 
 - (void)globalsButtonTapped:(FLEXToolbarItem *)sender
 {
-    FLEXGlobalsTableViewController *globalsViewController = [[FLEXGlobalsTableViewController alloc] init];
-    globalsViewController.delegate = self;
-    [FLEXGlobalsTableViewController setApplicationWindow:[[UIApplication sharedApplication] keyWindow]];
-    UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:globalsViewController];
-    [self makeKeyAndPresentViewController:navigationController animated:YES completion:nil];
+    [self toggleMenuTool];
 }
 
 - (void)closeButtonTapped:(FLEXToolbarItem *)sender
@@ -500,14 +466,24 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
     CGRect newToolbarFrame = self.toolbarFrameBeforeDragging;
     newToolbarFrame.origin.y += translation.y;
     
-    CGFloat maxY = CGRectGetMaxY(self.view.bounds) - newToolbarFrame.size.height;
-    if (newToolbarFrame.origin.y < 0.0) {
-        newToolbarFrame.origin.y = 0.0;
-    } else if (newToolbarFrame.origin.y > maxY) {
-        newToolbarFrame.origin.y = maxY;
+    [self updateToolbarPositionWithUnconstrainedFrame:newToolbarFrame];
+}
+
+- (void)updateToolbarPositionWithUnconstrainedFrame:(CGRect)unconstrainedFrame
+{
+    CGRect safeArea = [self viewSafeArea];
+    // We only constrain the Y-axis because We want the toolbar to handle the X-axis safeArea layout by itself
+    CGFloat minY = CGRectGetMinY(safeArea);
+    CGFloat maxY = CGRectGetMaxY(safeArea) - unconstrainedFrame.size.height;
+    if (unconstrainedFrame.origin.y < minY) {
+        unconstrainedFrame.origin.y = minY;
+    } else if (unconstrainedFrame.origin.y > maxY) {
+        unconstrainedFrame.origin.y = maxY;
     }
-    
-    self.explorerToolbar.frame = newToolbarFrame;
+
+    self.explorerToolbar.frame = unconstrainedFrame;
+
+    [[NSUserDefaults standardUserDefaults] setDouble:unconstrainedFrame.origin.y forKey:kFLEXToolbarTopMarginDefaultsKey];
 }
 
 - (void)handleToolbarHintTapGesture:(UITapGestureRecognizer *)tapGR
@@ -564,8 +540,8 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
     
     // For outlined views and the selected view, only use visible views.
     // Outlining hidden views adds clutter and makes the selection behavior confusing.
-    NSArray *visibleViewsAtTapPoint = [self viewsAtPoint:selectionPointInWindow skipHiddenViews:YES];
-    NSMutableDictionary *newOutlineViewsForVisibleViews = [NSMutableDictionary dictionary];
+    NSArray<UIView *> *visibleViewsAtTapPoint = [self viewsAtPoint:selectionPointInWindow skipHiddenViews:YES];
+    NSMutableDictionary<NSValue *, UIView *> *newOutlineViewsForVisibleViews = [NSMutableDictionary dictionary];
     for (UIView *view in visibleViewsAtTapPoint) {
         UIView *outlineView = [self outlineViewForView:view];
         [self.view addSubview:outlineView];
@@ -593,17 +569,17 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
 
 - (void)removeAndClearOutlineViews
 {
-    for (id key in self.outlineViewsForVisibleViews) {
+    for (NSValue *key in self.outlineViewsForVisibleViews) {
         UIView *outlineView = self.outlineViewsForVisibleViews[key];
         [outlineView removeFromSuperview];
     }
     self.outlineViewsForVisibleViews = nil;
 }
 
-- (NSArray *)viewsAtPoint:(CGPoint)tapPointInWindow skipHiddenViews:(BOOL)skipHidden
+- (NSArray<UIView *> *)viewsAtPoint:(CGPoint)tapPointInWindow skipHiddenViews:(BOOL)skipHidden
 {
-    NSMutableArray *views = [NSMutableArray array];
-    for (UIWindow *window in [self allWindows]) {
+    NSMutableArray<UIView *> *views = [NSMutableArray array];
+    for (UIWindow *window in [FLEXUtility allWindows]) {
         // Don't include the explorer's own window or subviews.
         if (window != self.view.window && [window pointInside:tapPointInWindow withEvent:nil]) {
             [views addObject:window];
@@ -618,7 +594,7 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
     // Select in the window that would handle the touch, but don't just use the result of hitTest:withEvent: so we can still select views with interaction disabled.
     // Default to the the application's key window if none of the windows want the touch.
     UIWindow *windowForSelection = [[UIApplication sharedApplication] keyWindow];
-    for (UIWindow *window in [[self allWindows] reverseObjectEnumerator]) {
+    for (UIWindow *window in [[FLEXUtility allWindows] reverseObjectEnumerator]) {
         // Ignore the explorer's own window.
         if (window != self.view.window) {
             if ([window hitTest:tapPointInWindow withEvent:nil]) {
@@ -632,9 +608,9 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
     return [[self recursiveSubviewsAtPoint:tapPointInWindow inView:windowForSelection skipHiddenViews:YES] lastObject];
 }
 
-- (NSArray *)recursiveSubviewsAtPoint:(CGPoint)pointInView inView:(UIView *)view skipHiddenViews:(BOOL)skipHidden
+- (NSArray<UIView *> *)recursiveSubviewsAtPoint:(CGPoint)pointInView inView:(UIView *)view skipHiddenViews:(BOOL)skipHidden
 {
-    NSMutableArray *subviewsAtPoint = [NSMutableArray array];
+    NSMutableArray<UIView *> *subviewsAtPoint = [NSMutableArray array];
     for (UIView *subview in view.subviews) {
         BOOL isHidden = subview.hidden || subview.alpha < 0.01;
         if (skipHidden && isHidden) {
@@ -656,9 +632,9 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
     return subviewsAtPoint;
 }
 
-- (NSArray *)allRecursiveSubviewsInView:(UIView *)view
+- (NSArray<UIView *> *)allRecursiveSubviewsInView:(UIView *)view
 {
-    NSMutableArray *subviews = [NSMutableArray array];
+    NSMutableArray<UIView *> *subviews = [NSMutableArray array];
     for (UIView *subview in view.subviews) {
         [subviews addObject:subview];
         [subviews addObjectsFromArray:[self allRecursiveSubviewsInView:subview]];
@@ -666,9 +642,9 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
     return subviews;
 }
 
-- (NSDictionary *)hierarchyDepthsForViews:(NSArray *)views
+- (NSDictionary<NSValue *, NSNumber *> *)hierarchyDepthsForViews:(NSArray<UIView *> *)views
 {
-    NSMutableDictionary *hierarchyDepths = [NSMutableDictionary dictionary];
+    NSMutableDictionary<NSValue *, NSNumber *> *hierarchyDepths = [NSMutableDictionary dictionary];
     for (UIView *view in views) {
         NSInteger depth = 0;
         UIView *tryView = view;
@@ -712,6 +688,33 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
 }
 
 
+#pragma mark - Safe Area Handling
+
+- (CGRect)viewSafeArea
+{
+    CGRect safeArea = self.view.bounds;
+#if FLEX_AT_LEAST_IOS11_SDK
+    if (@available(iOS 11, *)) {
+        safeArea = UIEdgeInsetsInsetRect(self.view.bounds, self.view.safeAreaInsets);
+    }
+#endif
+    return safeArea;
+}
+
+#if FLEX_AT_LEAST_IOS11_SDK
+- (void)viewSafeAreaInsetsDidChange
+{
+  if (@available(iOS 11, *)) {
+    [super viewSafeAreaInsetsDidChange];
+  }
+
+  CGRect safeArea = [self viewSafeArea];
+  CGSize toolbarSize = [self.explorerToolbar sizeThatFits:CGSizeMake(CGRectGetWidth(self.view.bounds), CGRectGetHeight(safeArea))];
+  [self updateToolbarPositionWithUnconstrainedFrame:CGRectMake(CGRectGetMinX(self.explorerToolbar.frame), CGRectGetMinY(self.explorerToolbar.frame), toolbarSize.width, toolbarSize.height)];
+}
+#endif
+
+
 #pragma mark - Touch Handling
 
 - (BOOL)shouldReceiveTouchAtWindowPoint:(CGPoint)pointInWindowCoordinates
@@ -750,7 +753,7 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
 {
     // Note that we need to wait until the view controller is dismissed to calculated the frame of the outline view.
     // Otherwise the coordinate conversion doesn't give the correct result.
-    [self resignKeyAndDismissViewControllerAnimated:YES completion:^{
+    [self toggleViewsToolWithCompletion:^{
         // If the selected view is outside of the tap point array (selected from "Full Hierarchy"),
         // then clear out the tap point array and remove all the outline views.
         if (![self.viewsAtTapPoint containsObject:selectedView]) {
@@ -830,4 +833,109 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
     return self.previousKeyWindow != nil;
 }
 
+- (void)toggleToolWithViewControllerProvider:(UIViewController *(^)(void))future completion:(void(^)(void))completion
+{
+    if (self.presentedViewController) {
+        [self resignKeyAndDismissViewControllerAnimated:YES completion:completion];
+    } else {
+        [self makeKeyAndPresentViewController:future() animated:YES completion:completion];
+    }
+}
+
+#pragma mark - Keyboard Shortcut Helpers
+
+- (void)toggleSelectTool
+{
+    if (self.currentMode == FLEXExplorerModeSelect) {
+        self.currentMode = FLEXExplorerModeDefault;
+    } else {
+        self.currentMode = FLEXExplorerModeSelect;
+    }
+}
+
+- (void)toggleMoveTool
+{
+    if (self.currentMode == FLEXExplorerModeMove) {
+        self.currentMode = FLEXExplorerModeDefault;
+    } else {
+        self.currentMode = FLEXExplorerModeMove;
+    }
+}
+
+- (void)toggleViewsTool
+{
+    [self toggleViewsToolWithCompletion:nil];
+}
+
+- (void)toggleViewsToolWithCompletion:(void(^)(void))completion
+{
+    [self toggleToolWithViewControllerProvider:^UIViewController *{
+        NSArray<UIView *> *allViews = [self allViewsInHierarchy];
+        NSDictionary *depthsForViews = [self hierarchyDepthsForViews:allViews];
+        FLEXHierarchyTableViewController *hierarchyTVC = [[FLEXHierarchyTableViewController alloc] initWithViews:allViews viewsAtTap:self.viewsAtTapPoint selectedView:self.selectedView depths:depthsForViews];
+        hierarchyTVC.delegate = self;
+        return [[UINavigationController alloc] initWithRootViewController:hierarchyTVC];
+    } completion:^{
+        if (completion) {
+            completion();
+        }
+    }];
+}
+
+- (void)toggleMenuTool
+{
+    [self toggleToolWithViewControllerProvider:^UIViewController *{
+        FLEXGlobalsTableViewController *globalsViewController = [[FLEXGlobalsTableViewController alloc] init];
+        globalsViewController.delegate = self;
+        [FLEXGlobalsTableViewController setApplicationWindow:[[UIApplication sharedApplication] keyWindow]];
+        return [[UINavigationController alloc] initWithRootViewController:globalsViewController];
+    } completion:nil];
+}
+
+- (void)handleDownArrowKeyPressed
+{
+    if (self.currentMode == FLEXExplorerModeMove) {
+        CGRect frame = self.selectedView.frame;
+        frame.origin.y += 1.0 / [[UIScreen mainScreen] scale];
+        self.selectedView.frame = frame;
+    } else if (self.currentMode == FLEXExplorerModeSelect && [self.viewsAtTapPoint count] > 0) {
+        NSInteger selectedViewIndex = [self.viewsAtTapPoint indexOfObject:self.selectedView];
+        if (selectedViewIndex > 0) {
+            self.selectedView = [self.viewsAtTapPoint objectAtIndex:selectedViewIndex - 1];
+        }
+    }
+}
+
+- (void)handleUpArrowKeyPressed
+{
+    if (self.currentMode == FLEXExplorerModeMove) {
+        CGRect frame = self.selectedView.frame;
+        frame.origin.y -= 1.0 / [[UIScreen mainScreen] scale];
+        self.selectedView.frame = frame;
+    } else if (self.currentMode == FLEXExplorerModeSelect && [self.viewsAtTapPoint count] > 0) {
+        NSInteger selectedViewIndex = [self.viewsAtTapPoint indexOfObject:self.selectedView];
+        if (selectedViewIndex < [self.viewsAtTapPoint count] - 1) {
+            self.selectedView = [self.viewsAtTapPoint objectAtIndex:selectedViewIndex + 1];
+        }
+    }
+}
+
+- (void)handleRightArrowKeyPressed
+{
+    if (self.currentMode == FLEXExplorerModeMove) {
+        CGRect frame = self.selectedView.frame;
+        frame.origin.x += 1.0 / [[UIScreen mainScreen] scale];
+        self.selectedView.frame = frame;
+    }
+}
+
+- (void)handleLeftArrowKeyPressed
+{
+    if (self.currentMode == FLEXExplorerModeMove) {
+        CGRect frame = self.selectedView.frame;
+        frame.origin.x -= 1.0 / [[UIScreen mainScreen] scale];
+        self.selectedView.frame = frame;
+    }
+}
+
 @end

Classes/ExplorerToolbar/FLEXExplorerViewController.h

@@ -1,26 +0,0 @@
-//
-//  FLEXExplorerViewController.h
-//  Flipboard
-//
-//  Created by Ryan Olson on 4/4/14.
-//  Copyright (c) 2014 Flipboard. All rights reserved.
-//
-
-#import <UIKit/UIKit.h>
-
-@protocol FLEXExplorerViewControllerDelegate;
-
-@interface FLEXExplorerViewController : UIViewController
-
-@property (nonatomic, weak) id <FLEXExplorerViewControllerDelegate> delegate;
-
-- (BOOL)shouldReceiveTouchAtWindowPoint:(CGPoint)pointInWindowCoordinates;
-- (BOOL)wantsWindowToBecomeKey;
-
-@end
-
-@protocol FLEXExplorerViewControllerDelegate <NSObject>
-
-- (void)explorerViewControllerDidFinish:(FLEXExplorerViewController *)explorerViewController;
-
-@end

Classes/ExplorerToolbar/FLEXManager.h

@@ -1,50 +0,0 @@
-//
-//  FLEXManager.h
-//  Flipboard
-//
-//  Created by Ryan Olson on 4/4/14.
-//  Copyright (c) 2014 Flipboard. All rights reserved.
-//
-
-#import <Foundation/Foundation.h>
-#import <UIKit/UIKit.h>
-
-@interface FLEXManager : NSObject
-
-+ (instancetype)sharedManager;
-
-@property (nonatomic, readonly) BOOL isHidden;
-
-- (void)showExplorer;
-- (void)hideExplorer;
-
-/// If this property is set to YES, FLEX will swizzle NSURLConnection*Delegate and NSURLSession*Delegate methods
-/// on classes that conform to the protocols. This allows you to view network activity history from the main FLEX menu.
-/// Full responses are kept temporarily in a size limited cache and may be pruged under memory pressure.
-@property (nonatomic, assign, getter=isNetworkDebuggingEnabled) BOOL networkDebuggingEnabled;
-
-/// Defaults to 50 MB if never set. Values set here are presisted across launches of the app.
-/// The response cache uses an NSCache, so it may purge prior to hitting the limit when the app is under memory pressure.
-@property (nonatomic, assign) NSUInteger networkResponseCacheByteLimit;
-
-#pragma mark - Extensions
-
-/// Adds an entry at the bottom of the list of Global State items. Call this method before this view controller is displayed.
-/// @param entryName The string to be displayed in the cell.
-/// @param objectFutureBlock When you tap on the row, information about the object returned by this block will be displayed.
-/// Passing a block that returns an object allows you to display information about an object whose actual pointer may change at runtime (e.g. +currentUser)
-/// @note This method must be called from the main thread.
-/// The objectFutureBlock will be invoked from the main thread and may return nil.
-/// @note The passed block will be copied and retain for the duration of the application, you may want to use __weak references.
-- (void)registerGlobalEntryWithName:(NSString *)entryName objectFutureBlock:(id (^)(void))objectFutureBlock;
-
-/// Adds an entry at the bottom of the list of Global State items. Call this method before this view controller is displayed.
-/// @param entryName The string to be displayed in the cell.
-/// @param viewControllerFutureBlock When you tap on the row, view controller returned by this block will be pushed on the navigation controller stack.
-/// @note This method must be called from the main thread.
-/// The viewControllerFutureBlock will be invoked from the main thread and may not return nil.
-/// @note The passed block will be copied and retain for the duration of the application, you may want to use __weak references.
-- (void)registerGlobalEntryWithName:(NSString *)entryName
-          viewControllerFutureBlock:(UIViewController * (^)(void))viewControllerFutureBlock;
-
-@end

Classes/ExplorerToolbar/FLEXManager.m

@@ -1,165 +0,0 @@
-//
-//  FLEXManager.m
-//  Flipboard
-//
-//  Created by Ryan Olson on 4/4/14.
-//  Copyright (c) 2014 Flipboard. All rights reserved.
-//
-
-#import "FLEXManager.h"
-#import "FLEXExplorerViewController.h"
-#import "FLEXWindow.h"
-#import "FLEXGlobalsTableViewControllerEntry.h"
-#import "FLEXObjectExplorerFactory.h"
-#import "FLEXObjectExplorerViewController.h"
-#import "FLEXNetworkObserver.h"
-#import "FLEXNetworkRecorder.h"
-
-@interface FLEXManager () <FLEXWindowEventDelegate, FLEXExplorerViewControllerDelegate>
-
-@property (nonatomic, strong) FLEXWindow *explorerWindow;
-@property (nonatomic, strong) FLEXExplorerViewController *explorerViewController;
-
-@property (nonatomic, readonly, strong) NSMutableArray *userGlobalEntries;
-
-@end
-
-@implementation FLEXManager
-
-+ (instancetype)sharedManager
-{
-    static FLEXManager *sharedManager = nil;
-    static dispatch_once_t onceToken;
-    dispatch_once(&onceToken, ^{
-        sharedManager = [[[self class] alloc] init];
-    });
-    return sharedManager;
-}
-
-- (instancetype)init
-{
-    self = [super init];
-    if (self) {
-        _userGlobalEntries = [[NSMutableArray alloc] init];
-    }
-    return self;
-}
-
-- (FLEXWindow *)explorerWindow
-{
-    NSAssert([NSThread isMainThread], @"You must use %@ from the main thread only.", NSStringFromClass([self class]));
-    
-    if (!_explorerWindow) {
-        _explorerWindow = [[FLEXWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
-        _explorerWindow.eventDelegate = self;
-        _explorerWindow.rootViewController = self.explorerViewController;
-    }
-    
-    return _explorerWindow;
-}
-
-- (FLEXExplorerViewController *)explorerViewController
-{
-    if (!_explorerViewController) {
-        _explorerViewController = [[FLEXExplorerViewController alloc] init];
-        _explorerViewController.delegate = self;
-    }
-
-    return _explorerViewController;
-}
-
-- (void)showExplorer
-{
-    self.explorerWindow.hidden = NO;
-}
-
-- (void)hideExplorer
-{
-    self.explorerWindow.hidden = YES;
-}
-
-- (BOOL)isHidden
-{
-    return self.explorerWindow.isHidden;
-}
-
-- (BOOL)isNetworkDebuggingEnabled
-{
-    return [FLEXNetworkObserver isEnabled];
-}
-
-- (void)setNetworkDebuggingEnabled:(BOOL)networkDebuggingEnabled
-{
-    [FLEXNetworkObserver setEnabled:networkDebuggingEnabled];
-}
-
-- (NSUInteger)networkResponseCacheByteLimit
-{
-    return [[FLEXNetworkRecorder defaultRecorder] responseCacheByteLimit];
-}
-
-- (void)setNetworkResponseCacheByteLimit:(NSUInteger)networkResponseCacheByteLimit
-{
-    [[FLEXNetworkRecorder defaultRecorder] setResponseCacheByteLimit:networkResponseCacheByteLimit];
-}
-
-#pragma mark - FLEXWindowEventDelegate
-
-- (BOOL)shouldHandleTouchAtPoint:(CGPoint)pointInWindow
-{
-    // Ask the explorer view controller
-    return [self.explorerViewController shouldReceiveTouchAtWindowPoint:pointInWindow];
-}
-
-- (BOOL)canBecomeKeyWindow
-{
-    // Only when the explorer view controller wants it because it needs to accept key input & affect the status bar.
-    return [self.explorerViewController wantsWindowToBecomeKey];
-}
-
-
-#pragma mark - FLEXExplorerViewControllerDelegate
-
-- (void)explorerViewControllerDidFinish:(FLEXExplorerViewController *)explorerViewController
-{
-    [self hideExplorer];
-}
-
-
-#pragma mark - Extensions
-
-- (void)registerGlobalEntryWithName:(NSString *)entryName objectFutureBlock:(id (^)(void))objectFutureBlock
-{
-    NSParameterAssert(entryName);
-    NSParameterAssert(objectFutureBlock);
-    NSAssert([NSThread isMainThread], @"This method must be called from the main thread.");
-
-    entryName = entryName.copy;
-    FLEXGlobalsTableViewControllerEntry *entry = [FLEXGlobalsTableViewControllerEntry entryWithNameFuture:^NSString *{
-        return entryName;
-    } viewControllerFuture:^UIViewController *{
-        return [FLEXObjectExplorerFactory explorerViewControllerForObject:objectFutureBlock()];
-    }];
-
-    [self.userGlobalEntries addObject:entry];
-}
-
-- (void)registerGlobalEntryWithName:(NSString *)entryName viewControllerFutureBlock:(UIViewController * (^)(void))viewControllerFutureBlock
-{
-    NSParameterAssert(entryName);
-    NSParameterAssert(viewControllerFutureBlock);
-    NSAssert([NSThread isMainThread], @"This method must be called from the main thread.");
-
-    entryName = entryName.copy;
-    FLEXGlobalsTableViewControllerEntry *entry = [FLEXGlobalsTableViewControllerEntry entryWithNameFuture:^NSString *{
-        return entryName;
-    } viewControllerFuture:^UIViewController *{
-        UIViewController *viewController = viewControllerFutureBlock();
-        NSCAssert(viewController, @"'%@' entry returned nil viewController. viewControllerFutureBlock should never return nil.", entryName);
-        return viewController;
-    }];
-
-    [self.userGlobalEntries addObject:entry];
-}
-
-@end

Classes/FLEX.h

@@ -0,0 +1,9 @@
+//
+//  FLEX.h
+//  FLEX
+//
+//  Created by Eric Horacek on 7/18/15.
+//  Copyright (c) 2015 Flipboard. All rights reserved.
+//
+
+#import <FLEX/FLEXManager.h>

Classes/FLEXManager.h

@@ -0,0 +1,91 @@
+//
+//  FLEXManager.h
+//  Flipboard
+//
+//  Created by Ryan Olson on 4/4/14.
+//  Copyright (c) 2014 Flipboard. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import <UIKit/UIKit.h>
+
+typedef UIViewController *(^FLEXCustomContentViewerFuture)(NSData *data);
+
+@interface FLEXManager : NSObject
+
++ (instancetype)sharedManager;
+
+@property (nonatomic, readonly) BOOL isHidden;
+
+- (void)showExplorer;
+- (void)hideExplorer;
+- (void)toggleExplorer;
+
+#pragma mark - Network Debugging
+
+/// If this property is set to YES, FLEX will swizzle NSURLConnection*Delegate and NSURLSession*Delegate methods
+/// on classes that conform to the protocols. This allows you to view network activity history from the main FLEX menu.
+/// Full responses are kept temporarily in a size-limited cache and may be pruned under memory pressure.
+@property (nonatomic, assign, getter=isNetworkDebuggingEnabled) BOOL networkDebuggingEnabled;
+
+/// Defaults to 25 MB if never set. Values set here are presisted across launches of the app.
+/// The response cache uses an NSCache, so it may purge prior to hitting the limit when the app is under memory pressure.
+@property (nonatomic, assign) NSUInteger networkResponseCacheByteLimit;
+
+/// Requests whose host ends with one of the blacklisted entries in this array will be not be recorded (eg. google.com).
+/// Wildcard or subdomain entries are not required (eg. google.com will match any subdomain under google.com).
+/// Useful to remove requests that are typically noisy, such as analytics requests that you aren't interested in tracking.
+@property (nonatomic, copy) NSArray<NSString *> *networkRequestHostBlacklist;
+
+
+#pragma mark - Keyboard Shortcuts
+
+/// Simulator keyboard shortcuts are enabled by default.
+/// The shortcuts will not fire when there is an active text field, text view, or other responder accepting key input.
+/// You can disable keyboard shortcuts if you have existing keyboard shortcuts that conflict with FLEX, or if you like doing things the hard way ;)
+/// Keyboard shortcuts are always disabled (and support is compiled out) in non-simulator builds
+@property (nonatomic, assign) BOOL simulatorShortcutsEnabled;
+
+/// Adds an action to run when the specified key & modifier combination is pressed
+/// @param key A single character string matching a key on the keyboard
+/// @param modifiers Modifier keys such as shift, command, or alt/option
+/// @param action The block to run on the main thread when the key & modifier combination is recognized.
+/// @param description Shown the the keyboard shortcut help menu, which is accessed via the '?' key.
+/// @note The action block will be retained for the duration of the application. You may want to use weak references.
+/// @note FLEX registers several default keyboard shortcuts. Use the '?' key to see a list of shortcuts.
+- (void)registerSimulatorShortcutWithKey:(NSString *)key modifiers:(UIKeyModifierFlags)modifiers action:(dispatch_block_t)action description:(NSString *)description;
+
+#pragma mark - Extensions
+
+/// Default database password is @c nil by default.
+/// Set this to the password you want the databases to open with.
+@property (copy, nonatomic) NSString *defaultSqliteDatabasePassword;
+
+/// Adds an entry at the bottom of the list of Global State items. Call this method before this view controller is displayed.
+/// @param entryName The string to be displayed in the cell.
+/// @param objectFutureBlock When you tap on the row, information about the object returned by this block will be displayed.
+/// Passing a block that returns an object allows you to display information about an object whose actual pointer may change at runtime (e.g. +currentUser)
+/// @note This method must be called from the main thread.
+/// The objectFutureBlock will be invoked from the main thread and may return nil.
+/// @note The passed block will be copied and retain for the duration of the application, you may want to use __weak references.
+- (void)registerGlobalEntryWithName:(NSString *)entryName objectFutureBlock:(id (^)(void))objectFutureBlock;
+
+/// Adds an entry at the bottom of the list of Global State items. Call this method before this view controller is displayed.
+/// @param entryName The string to be displayed in the cell.
+/// @param viewControllerFutureBlock When you tap on the row, view controller returned by this block will be pushed on the navigation controller stack.
+/// @note This method must be called from the main thread.
+/// The viewControllerFutureBlock will be invoked from the main thread and may not return nil.
+/// @note The passed block will be copied and retain for the duration of the application, you may want to use __weak references.
+- (void)registerGlobalEntryWithName:(NSString *)entryName
+          viewControllerFutureBlock:(UIViewController * (^)(void))viewControllerFutureBlock;
+
+/// Sets custom viewer for specific content type.
+/// @param contentType Mime type like application/json
+/// @param viewControllerFutureBlock Viewer (view controller) creation block
+/// @note This method must be called from the main thread.
+/// The viewControllerFutureBlock will be invoked from the main thread and may not return nil.
+/// @note The passed block will be copied and retain for the duration of the application, you may want to use __weak references.
+- (void)setCustomViewerForContentType:(NSString *)contentType
+            viewControllerFutureBlock:(FLEXCustomContentViewerFuture)viewControllerFutureBlock;
+
+@end

Classes/GlobalStateExplorers/DatabaseBrowser/FLEXDatabaseManager.h

@@ -0,0 +1,26 @@
+//
+//  PTDatabaseManager.h
+//  Derived from:
+//
+//  FMDatabase.h
+//  FMDB( https://github.com/ccgus/fmdb )
+//
+//  Created by Peng Tao on 15/11/23.
+//
+//  Licensed to Flying Meat Inc. under one or more contributor license agreements.
+//  See the LICENSE file distributed with this work for the terms under
+//  which Flying Meat Inc. licenses this file to you.
+
+#import <Foundation/Foundation.h>
+
+@protocol FLEXDatabaseManager <NSObject>
+
+@required
+- (instancetype)initWithPath:(NSString*)path;
+
+- (BOOL)open;
+- (NSArray<NSDictionary<NSString *, id> *> *)queryAllTables;
+- (NSArray<NSString *> *)queryAllColumnsWithTableName:(NSString *)tableName;
+- (NSArray<NSDictionary<NSString *, id> *> *)queryAllDataWithTableName:(NSString *)tableName;
+
+@end

Classes/GlobalStateExplorers/DatabaseBrowser/FLEXMultiColumnTableView.h

@@ -0,0 +1,48 @@
+//
+//  PTMultiColumnTableView.h
+//  PTMultiColumnTableViewDemo
+//
+//  Created by Peng Tao on 15/11/16.
+//  Copyright © 2015年 Peng Tao. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+#import "FLEXTableColumnHeader.h"
+
+@class FLEXMultiColumnTableView;
+
+@protocol FLEXMultiColumnTableViewDelegate <NSObject>
+
+@required
+- (void)multiColumnTableView:(FLEXMultiColumnTableView *)tableView didTapLabelWithText:(NSString *)text;
+- (void)multiColumnTableView:(FLEXMultiColumnTableView *)tableView didTapHeaderWithText:(NSString *)text sortType:(FLEXTableColumnHeaderSortType)sortType;
+
+@end
+
+@protocol FLEXMultiColumnTableViewDataSource <NSObject>
+
+@required
+
+- (NSInteger)numberOfColumnsInTableView:(FLEXMultiColumnTableView *)tableView;
+- (NSInteger)numberOfRowsInTableView:(FLEXMultiColumnTableView *)tableView;
+- (NSString *)columnNameInColumn:(NSInteger)column;
+- (NSString *)rowNameInRow:(NSInteger)row;
+- (NSString *)contentAtColumn:(NSInteger)column row:(NSInteger)row;
+- (NSArray *)contentAtRow:(NSInteger)row;
+
+- (CGFloat)multiColumnTableView:(FLEXMultiColumnTableView *)tableView widthForContentCellInColumn:(NSInteger)column;
+- (CGFloat)multiColumnTableView:(FLEXMultiColumnTableView *)tableView heightForContentCellInRow:(NSInteger)row;
+- (CGFloat)heightForTopHeaderInTableView:(FLEXMultiColumnTableView *)tableView;
+- (CGFloat)widthForLeftHeaderInTableView:(FLEXMultiColumnTableView *)tableView;
+
+@end
+
+
+@interface FLEXMultiColumnTableView : UIView
+
+@property (nonatomic, weak) id<FLEXMultiColumnTableViewDataSource>dataSource;
+@property (nonatomic, weak) id<FLEXMultiColumnTableViewDelegate>delegate;
+
+- (void)reloadData;
+
+@end

Classes/GlobalStateExplorers/DatabaseBrowser/FLEXMultiColumnTableView.m

@@ -0,0 +1,341 @@
+//
+//  PTMultiColumnTableView.m
+//  PTMultiColumnTableViewDemo
+//
+//  Created by Peng Tao on 15/11/16.
+//  Copyright © 2015年 Peng Tao. All rights reserved.
+//
+
+#import "FLEXMultiColumnTableView.h"
+#import "FLEXTableContentCell.h"
+#import "FLEXTableLeftCell.h"
+
+@interface FLEXMultiColumnTableView ()
+<UITableViewDataSource, UITableViewDelegate,UIScrollViewDelegate, FLEXTableContentCellDelegate>
+
+@property (nonatomic, strong) UIScrollView *contentScrollView;
+@property (nonatomic, strong) UIScrollView *headerScrollView;
+@property (nonatomic, strong) UITableView  *leftTableView;
+@property (nonatomic, strong) UITableView  *contentTableView;
+@property (nonatomic, strong) UIView       *leftHeader;
+
+@property (nonatomic, strong) NSDictionary<NSString *, NSNumber *> *sortStatusDict;
+@property (nonatomic, strong) NSArray *rowData;
+@end
+
+static const CGFloat kColumnMargin = 1;
+
+@implementation FLEXMultiColumnTableView
+
+
+- (instancetype)initWithFrame:(CGRect)frame
+{
+    self = [super initWithFrame:frame];
+    if (self) {
+        [self loadUI];
+    }
+    return self;
+}
+
+- (void)didMoveToSuperview
+{
+    [super didMoveToSuperview];
+    [self reloadData];
+}
+
+- (void)layoutSubviews
+{
+    [super layoutSubviews];
+    
+    CGFloat width  = self.frame.size.width;
+    CGFloat height = self.frame.size.height;
+    CGFloat topheaderHeight = [self topHeaderHeight];
+    CGFloat leftHeaderWidth = [self leftHeaderWidth];
+    
+    CGFloat contentWidth = 0.0;
+    NSInteger rowsCount = [self numberOfColumns];
+    for (int i = 0; i < rowsCount; i++) {
+        contentWidth += [self contentWidthForColumn:i];
+    }
+    
+    self.leftTableView.frame           = CGRectMake(0, topheaderHeight, leftHeaderWidth, height - topheaderHeight);
+    self.headerScrollView.frame        = CGRectMake(leftHeaderWidth, 0, width - leftHeaderWidth, topheaderHeight);
+    self.headerScrollView.contentSize  = CGSizeMake( self.contentTableView.frame.size.width, self.headerScrollView.frame.size.height);
+    self.contentTableView.frame        = CGRectMake(0, 0, contentWidth + [self numberOfColumns] * [self columnMargin] , height - topheaderHeight);
+    self.contentScrollView.frame       = CGRectMake(leftHeaderWidth, topheaderHeight, width - leftHeaderWidth, height - topheaderHeight);
+    self.contentScrollView.contentSize = self.contentTableView.frame.size;
+    self.leftHeader.frame              = CGRectMake(0, 0, [self leftHeaderWidth], [self topHeaderHeight]);
+}
+
+
+- (void)loadUI
+{
+    [self loadHeaderScrollView];
+    [self loadContentScrollView];
+    [self loadLeftView];
+}
+
+- (void)reloadData
+{
+    [self loadLeftViewData];
+    [self loadContentData];
+    [self loadHeaderData];
+}
+
+#pragma mark - UI
+
+- (void)loadHeaderScrollView
+{
+    UIScrollView *headerScrollView = [[UIScrollView alloc] init];
+    headerScrollView.delegate      = self;
+    self.headerScrollView          = headerScrollView;
+    self.headerScrollView.backgroundColor =  [UIColor colorWithWhite:0.803 alpha:0.850];
+    
+    [self addSubview:headerScrollView];
+}
+
+- (void)loadContentScrollView
+{
+    
+    UIScrollView *scrollView = [[UIScrollView alloc] init];
+    scrollView.bounces       = NO;
+    scrollView.delegate      = self;
+    
+    UITableView *tableView   = [[UITableView alloc] init];
+    tableView.delegate       = self;
+    tableView.dataSource     = self;
+    tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
+    
+    [self addSubview:scrollView];
+    [scrollView addSubview:tableView];
+    
+    self.contentScrollView = scrollView;
+    self.contentTableView    = tableView;
+    
+}
+
+- (void)loadLeftView
+{
+    UITableView *leftTableView = [[UITableView alloc] init];
+    leftTableView.delegate       = self;
+    leftTableView.dataSource     = self;
+    leftTableView.separatorStyle = UITableViewCellSeparatorStyleNone;
+    self.leftTableView           = leftTableView;
+    [self addSubview:leftTableView];
+    
+    UIView *leftHeader = [[UIView alloc] init];
+    leftHeader.backgroundColor = [UIColor colorWithWhite:0.950 alpha:0.668];
+    self.leftHeader            = leftHeader;
+    [self addSubview:leftHeader];
+    
+}
+
+
+#pragma mark - Data
+
+- (void)loadHeaderData
+{
+    NSArray<UIView *> *subviews = self.headerScrollView.subviews;
+    
+    for (UIView *subview in subviews) {
+        [subview removeFromSuperview];
+    }
+    CGFloat x = 0.0;
+    CGFloat w = 0.0;
+    for (int i = 0; i < [self numberOfColumns] ; i++) {
+        w = [self contentWidthForColumn:i] + [self columnMargin];
+        
+        FLEXTableColumnHeader *cell = [[FLEXTableColumnHeader alloc] initWithFrame:CGRectMake(x, 0, w, [self topHeaderHeight] - 1)];
+        cell.label.text = [self columnTitleForColumn:i];
+        [self.headerScrollView addSubview:cell];
+        
+        FLEXTableColumnHeaderSortType type = [self.sortStatusDict[[self columnTitleForColumn:i]] integerValue];
+        [cell changeSortStatusWithType:type];
+        
+        UITapGestureRecognizer *gesture = [[UITapGestureRecognizer alloc] initWithTarget:self
+                                                                                  action:@selector(contentHeaderTap:)];
+        [cell addGestureRecognizer:gesture];
+        cell.userInteractionEnabled = YES;
+        
+        x = x + w;
+    }
+}
+
+- (void)contentHeaderTap:(UIGestureRecognizer *)gesture
+{
+    FLEXTableColumnHeader *header = (FLEXTableColumnHeader *)gesture.view;
+    NSString *string = header.label.text;
+    FLEXTableColumnHeaderSortType currentType = [self.sortStatusDict[string] integerValue];
+    FLEXTableColumnHeaderSortType newType ;
+    
+    switch (currentType) {
+        case FLEXTableColumnHeaderSortTypeNone:
+            newType = FLEXTableColumnHeaderSortTypeAsc;
+            break;
+        case FLEXTableColumnHeaderSortTypeAsc:
+            newType = FLEXTableColumnHeaderSortTypeDesc;
+            break;
+        case FLEXTableColumnHeaderSortTypeDesc:
+            newType = FLEXTableColumnHeaderSortTypeAsc;
+            break;
+    }
+    
+    self.sortStatusDict = @{header.label.text : @(newType)};
+    [header changeSortStatusWithType:newType];
+    [self.delegate multiColumnTableView:self didTapHeaderWithText:string sortType:newType];
+    
+}
+
+- (void)loadContentData
+{
+    [self.contentTableView reloadData];
+}
+
+- (void)loadLeftViewData
+{
+    [self.leftTableView reloadData];
+}
+
+- (UITableViewCell *)tableView:(UITableView *)tableView
+         cellForRowAtIndexPath:(NSIndexPath *)indexPath
+{
+    UIColor *backgroundColor = [UIColor whiteColor];
+    if (indexPath.row % 2 != 0) {
+        backgroundColor = [UIColor colorWithWhite:0.950 alpha:0.750];
+    }
+    
+    if (tableView != self.leftTableView) {
+        self.rowData = [self.dataSource contentAtRow:indexPath.row];
+        FLEXTableContentCell *cell = [FLEXTableContentCell cellWithTableView:tableView
+                                                                columnNumber:[self numberOfColumns]];
+        cell.contentView.backgroundColor = backgroundColor;
+        cell.delegate = self;
+        
+        for (int i = 0 ; i < cell.labels.count; i++) {
+            
+            UILabel *label  = cell.labels[i];
+            label.textColor = [UIColor blackColor];
+            
+            NSString *content = [NSString stringWithFormat:@"%@",self.rowData[i]];
+            if ([content isEqualToString:@"<null>"]) {
+                label.textColor = [UIColor lightGrayColor];
+                content = @"NULL";
+            }
+            label.text            = content;
+            label.backgroundColor = backgroundColor;
+        }
+        return cell;
+    }
+    else {
+        FLEXTableLeftCell *cell          = [FLEXTableLeftCell cellWithTableView:tableView];
+        cell.contentView.backgroundColor = backgroundColor;
+        cell.titlelabel.text             = [self rowTitleForRow:indexPath.row];
+        return cell;
+    }
+}
+
+- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
+{
+    return [self.dataSource numberOfRowsInTableView:self];
+}
+
+
+- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
+{
+    return [self.dataSource multiColumnTableView:self heightForContentCellInRow:indexPath.row];
+}
+
+
+- (void)scrollViewDidScroll:(UIScrollView *)scrollView
+{
+    if (scrollView == self.contentScrollView) {
+        self.headerScrollView.contentOffset = scrollView.contentOffset;
+    }
+    else if (scrollView == self.headerScrollView) {
+        self.contentScrollView.contentOffset = scrollView.contentOffset;
+    }
+    else if (scrollView == self.leftTableView) {
+        self.contentTableView.contentOffset = scrollView.contentOffset;
+    }
+    else if (scrollView == self.contentTableView) {
+        self.leftTableView.contentOffset = scrollView.contentOffset;
+    }
+}
+
+#pragma mark -
+#pragma mark UITableView Delegate
+
+- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
+{
+    if (tableView == self.leftTableView) {
+        [self.contentTableView selectRowAtIndexPath:indexPath
+                                           animated:NO
+                                     scrollPosition:UITableViewScrollPositionNone];
+    }
+    else if (tableView == self.contentTableView) {
+        [self.leftTableView selectRowAtIndexPath:indexPath
+                                        animated:NO
+                                  scrollPosition:UITableViewScrollPositionNone];
+    }
+}
+
+#pragma mark -
+#pragma mark DataSource Accessor
+
+- (NSInteger)numberOfrows
+{
+    return [self.dataSource numberOfRowsInTableView:self];
+}
+
+- (NSInteger)numberOfColumns
+{
+    return [self.dataSource numberOfColumnsInTableView:self];
+}
+
+- (NSString *)columnTitleForColumn:(NSInteger)column
+{
+    return [self.dataSource columnNameInColumn:column];
+}
+
+- (NSString *)rowTitleForRow:(NSInteger)row
+{
+    return [self.dataSource rowNameInRow:row];
+}
+
+- (NSString *)contentAtColumn:(NSInteger)column row:(NSInteger)row;
+{
+    return [self.dataSource contentAtColumn:column row:row];
+}
+
+- (CGFloat)contentWidthForColumn:(NSInteger)column
+{
+    return [self.dataSource multiColumnTableView:self widthForContentCellInColumn:column];
+}
+
+- (CGFloat)contentHeightForRow:(NSInteger)row
+{
+    return [self.dataSource multiColumnTableView:self heightForContentCellInRow:row];
+}
+
+- (CGFloat)topHeaderHeight
+{
+    return [self.dataSource heightForTopHeaderInTableView:self];
+}
+
+- (CGFloat)leftHeaderWidth
+{
+    return [self.dataSource widthForLeftHeaderInTableView:self];
+}
+
+- (CGFloat)columnMargin
+{
+    return kColumnMargin;
+}
+
+
+- (void)tableContentCell:(FLEXTableContentCell *)tableView labelDidTapWithText:(NSString *)text
+{
+    [self.delegate multiColumnTableView:self didTapLabelWithText:text];
+}
+
+@end

Classes/GlobalStateExplorers/DatabaseBrowser/FLEXRealmDatabaseManager.h

@@ -0,0 +1,14 @@
+//
+//  FLEXRealmDatabaseManager.h
+//  FLEX
+//
+//  Created by Tim Oliver on 28/01/2016.
+//  Copyright © 2016 Realm. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import "FLEXDatabaseManager.h"
+
+@interface FLEXRealmDatabaseManager : NSObject <FLEXDatabaseManager>
+
+@end

Classes/GlobalStateExplorers/DatabaseBrowser/FLEXRealmDatabaseManager.m

@@ -0,0 +1,114 @@
+//
+//  FLEXRealmDatabaseManager.m
+//  FLEX
+//
+//  Created by Tim Oliver on 28/01/2016.
+//  Copyright © 2016 Realm. All rights reserved.
+//
+
+#import "FLEXRealmDatabaseManager.h"
+
+#if __has_include(<Realm/Realm.h>)
+#import <Realm/Realm.h>
+#import <Realm/RLMRealm_Dynamic.h>
+#else
+#import "FLEXRealmDefines.h"
+#endif
+
+@interface FLEXRealmDatabaseManager ()
+
+@property (nonatomic, copy) NSString *path;
+@property (nonatomic, strong) RLMRealm * realm;
+
+@end
+
+//#endif
+
+@implementation FLEXRealmDatabaseManager
+
+- (instancetype)initWithPath:(NSString*)aPath
+{
+    Class realmClass = NSClassFromString(@"RLMRealm");
+    if (realmClass == nil) {
+        return nil;
+    }
+    
+    self = [super init];
+    
+    if (self) {
+        _path = aPath;
+    }
+    return self;
+}
+
+- (BOOL)open
+{
+    Class realmClass = NSClassFromString(@"RLMRealm");
+    Class configurationClass = NSClassFromString(@"RLMRealmConfiguration");
+    
+    if (realmClass == nil || configurationClass == nil) {
+        return NO;
+    }
+    
+    NSError *error = nil;
+    id configuration = [[configurationClass alloc] init];
+    [(RLMRealmConfiguration *)configuration setFileURL:[NSURL fileURLWithPath:self.path]];
+    self.realm = [realmClass realmWithConfiguration:configuration error:&error];
+    return (error == nil);
+}
+
+- (NSArray<NSDictionary<NSString *, id> *> *)queryAllTables
+{
+    NSMutableArray<NSDictionary<NSString *, id> *> *allTables = [NSMutableArray array];
+    RLMSchema *schema = [self.realm schema];
+    
+    for (RLMObjectSchema *objectSchema in schema.objectSchema) {
+        if (objectSchema.className == nil) {
+            continue;
+        }
+        
+        NSDictionary<NSString *, id> *dictionary = @{@"name":objectSchema.className};
+        [allTables addObject:dictionary];
+    }
+    
+    return allTables;
+}
+
+- (NSArray<NSString *> *)queryAllColumnsWithTableName:(NSString *)tableName
+{
+    RLMObjectSchema *objectSchema = [[self.realm schema] schemaForClassName:tableName];
+    if (objectSchema == nil) {
+        return nil;
+    }
+    
+    NSMutableArray<NSString *> *columnNames = [NSMutableArray array];
+    for (RLMProperty *property in objectSchema.properties) {
+        [columnNames addObject:property.name];
+    }
+    
+    return columnNames;
+}
+
+- (NSArray<NSDictionary<NSString *, id> *> *)queryAllDataWithTableName:(NSString *)tableName
+{
+    RLMObjectSchema *objectSchema = [[self.realm schema] schemaForClassName:tableName];
+    RLMResults *results = [self.realm allObjects:tableName];
+    if (results.count == 0 || objectSchema == nil) {
+        return nil;
+    }
+    
+    NSMutableArray<NSDictionary<NSString *, id> *> *allDataEntries = [NSMutableArray array];
+    for (RLMObject *result in results) {
+        NSMutableDictionary<NSString *, id> *entry = [NSMutableDictionary dictionary];
+        for (RLMProperty *property in objectSchema.properties) {
+            id value = [result valueForKey:property.name];
+            entry[property.name] = (value) ? (value) : [NSNull null];
+        }
+        
+        [allDataEntries addObject:entry];
+    }
+    
+    return allDataEntries;
+}
+
+@end

Classes/GlobalStateExplorers/DatabaseBrowser/FLEXRealmDefines.h

@@ -0,0 +1,46 @@
+//
+//  Realm.h
+//  FLEX
+//
+//  Created by Tim Oliver on 16/02/2016.
+//  Copyright © 2016 Realm. All rights reserved.
+//
+
+#if __has_include(<Realm/Realm.h>)
+#else
+
+@class RLMObject, RLMResults, RLMRealm, RLMRealmConfiguration, RLMSchema, RLMObjectSchema, RLMProperty;
+
+@interface RLMRealmConfiguration : NSObject
+@property (nonatomic, copy) NSURL *fileURL;
+@end
+
+@interface RLMRealm : NSObject
+@property (nonatomic, readonly) RLMSchema *schema;
++ (RLMRealm *)realmWithConfiguration:(RLMRealmConfiguration *)configuration error:(NSError **)error;
+- (RLMResults *)allObjects:(NSString *)className;
+@end
+
+@interface RLMSchema : NSObject
+@property (nonatomic, readonly) NSArray<RLMObjectSchema *> *objectSchema;
+- (RLMObjectSchema *)schemaForClassName:(NSString *)className;
+@end
+
+@interface RLMObjectSchema : NSObject
+@property (nonatomic, readonly) NSString *className;
+@property (nonatomic, readonly) NSArray<RLMProperty *> *properties;
+@end
+
+@interface RLMProperty : NSString
+@property (nonatomic, readonly) NSString *name;
+@end
+
+@interface RLMResults : NSObject <NSFastEnumeration>
+@property (nonatomic, readonly) NSInteger count;
+@end
+
+@interface RLMObject : NSObject
+
+@end
+
+#endif

Classes/GlobalStateExplorers/DatabaseBrowser/FLEXSQLiteDatabaseManager.h

@@ -0,0 +1,19 @@
+//
+//  PTDatabaseManager.h
+//  Derived from:
+//
+//  FMDatabase.h
+//  FMDB( https://github.com/ccgus/fmdb )
+//
+//  Created by Peng Tao on 15/11/23.
+//
+//  Licensed to Flying Meat Inc. under one or more contributor license agreements.
+//  See the LICENSE file distributed with this work for the terms under
+//  which Flying Meat Inc. licenses this file to you.
+
+#import <Foundation/Foundation.h>
+#import "FLEXDatabaseManager.h"
+
+@interface FLEXSQLiteDatabaseManager : NSObject <FLEXDatabaseManager>
+
+@end

Classes/GlobalStateExplorers/DatabaseBrowser/FLEXSQLiteDatabaseManager.m

@@ -0,0 +1,203 @@
+//
+//  PTDatabaseManager.m
+//  PTDatabaseReader
+//
+//  Created by Peng Tao on 15/11/23.
+//  Copyright © 2015年 Peng Tao. All rights reserved.
+//
+
+#import "FLEXSQLiteDatabaseManager.h"
+#import "FLEXManager.h"
+#import <sqlite3.h>
+
+
+static NSString *const QUERY_TABLENAMES_SQL = @"SELECT name FROM sqlite_master WHERE type='table' ORDER BY name";
+
+@implementation FLEXSQLiteDatabaseManager
+{
+    sqlite3* _db;
+    NSString* _databasePath;
+}
+
+- (instancetype)initWithPath:(NSString*)aPath
+{
+    self = [super init];
+    
+    if (self) {
+        _databasePath = [aPath copy];
+    }
+    return self;
+}
+
+- (BOOL)open {
+    if (_db) {
+        return YES;
+    }
+    int err = sqlite3_open([_databasePath UTF8String], &_db);
+
+#if SQLITE_HAS_CODEC
+    NSString *defaultSqliteDatabasePassword = [FLEXManager sharedManager].defaultSqliteDatabasePassword;
+
+    if (defaultSqliteDatabasePassword) {
+        const char *key = defaultSqliteDatabasePassword.UTF8String;
+
+        sqlite3_key(_db, key, (int)strlen(key));
+    }
+#endif
+
+    if(err != SQLITE_OK) {
+        NSLog(@"error opening!: %d", err);
+        return NO;
+    }
+    return YES;
+}
+
+- (BOOL)close {
+    if (!_db) {
+        return YES;
+    }
+    
+    int  rc;
+    BOOL retry;
+    BOOL triedFinalizingOpenStatements = NO;
+    
+    do {
+        retry   = NO;
+        rc      = sqlite3_close(_db);
+        if (SQLITE_BUSY == rc || SQLITE_LOCKED == rc) {
+            if (!triedFinalizingOpenStatements) {
+                triedFinalizingOpenStatements = YES;
+                sqlite3_stmt *pStmt;
+                while ((pStmt = sqlite3_next_stmt(_db, nil)) !=0) {
+                    NSLog(@"Closing leaked statement");
+                    sqlite3_finalize(pStmt);
+                    retry = YES;
+                }
+            }
+        }
+        else if (SQLITE_OK != rc) {
+            NSLog(@"error closing!: %d", rc);
+        }
+    }
+    while (retry);
+    
+    _db = nil;
+    return YES;
+}
+
+
+- (NSArray<NSDictionary<NSString *, id> *> *)queryAllTables
+{
+    return [self executeQuery:QUERY_TABLENAMES_SQL];
+}
+
+- (NSArray<NSString *> *)queryAllColumnsWithTableName:(NSString *)tableName
+{
+    NSString *sql = [NSString stringWithFormat:@"PRAGMA table_info('%@')",tableName];
+    NSArray<NSDictionary<NSString *, id> *> *resultArray =  [self executeQuery:sql];
+    NSMutableArray<NSString *> *array = [NSMutableArray array];
+    for (NSDictionary<NSString *, id> *dict in resultArray) {
+        NSString *columnName = (NSString *)dict[@"name"] ?: @"";
+        [array addObject:columnName];
+    }
+    return array;
+}
+
+- (NSArray<NSDictionary<NSString *, id> *> *)queryAllDataWithTableName:(NSString *)tableName
+{
+    NSString *sql = [NSString stringWithFormat:@"SELECT * FROM %@",tableName];
+    return [self executeQuery:sql];
+}
+
+#pragma mark -
+#pragma mark - Private
+
+- (NSArray<NSDictionary<NSString *, id> *> *)executeQuery:(NSString *)sql
+{
+    [self open];
+    NSMutableArray<NSDictionary<NSString *, id> *> *resultArray = [NSMutableArray array];
+    sqlite3_stmt *pstmt;
+    if (sqlite3_prepare_v2(_db, [sql UTF8String], -1, &pstmt, 0) == SQLITE_OK) {
+        while (sqlite3_step(pstmt) == SQLITE_ROW) {
+            NSUInteger num_cols = (NSUInteger)sqlite3_data_count(pstmt);
+            if (num_cols > 0) {
+                NSMutableDictionary<NSString *, id> *dict = [NSMutableDictionary dictionaryWithCapacity:num_cols];
+                
+                int columnCount = sqlite3_column_count(pstmt);
+                
+                int columnIdx = 0;
+                for (columnIdx = 0; columnIdx < columnCount; columnIdx++) {
+                    
+                    NSString *columnName = [NSString stringWithUTF8String:sqlite3_column_name(pstmt, columnIdx)];
+                    id objectValue = [self objectForColumnIndex:columnIdx stmt:pstmt];
+                    [dict setObject:objectValue forKey:columnName];
+                }
+                [resultArray addObject:dict];
+            }
+        }
+    }
+    [self close];
+    return resultArray;
+}
+
+
+- (id)objectForColumnIndex:(int)columnIdx stmt:(sqlite3_stmt*)stmt {
+    int columnType = sqlite3_column_type(stmt, columnIdx);
+    
+    id returnValue = nil;
+    
+    if (columnType == SQLITE_INTEGER) {
+        returnValue =  [NSNumber numberWithLongLong:sqlite3_column_int64(stmt, columnIdx)];
+    }
+    else if (columnType == SQLITE_FLOAT) {
+        returnValue = [NSNumber numberWithDouble:sqlite3_column_double(stmt, columnIdx)];
+    }
+    else if (columnType == SQLITE_BLOB) {
+        returnValue = [self dataForColumnIndex:columnIdx stmt:stmt];
+    }
+    else {
+        //default to a string for everything else
+        returnValue = [self stringForColumnIndex:columnIdx stmt:stmt];
+    }
+    
+    if (returnValue == nil) {
+        returnValue = [NSNull null];
+    }
+    
+    return returnValue;
+}
+
+- (NSString *)stringForColumnIndex:(int)columnIdx stmt:(sqlite3_stmt *)stmt {
+    
+    if (sqlite3_column_type(stmt, columnIdx) == SQLITE_NULL || (columnIdx < 0)) {
+        return nil;
+    }
+    
+    const char *c = (const char *)sqlite3_column_text(stmt, columnIdx);
+    
+    if (!c) {
+        // null row.
+        return nil;
+    }
+    
+    return [NSString stringWithUTF8String:c];
+}
+
+- (NSData *)dataForColumnIndex:(int)columnIdx stmt:(sqlite3_stmt *)stmt{
+    
+    if (sqlite3_column_type(stmt, columnIdx) == SQLITE_NULL || (columnIdx < 0)) {
+        return nil;
+    }
+    
+    const char *dataBuffer = sqlite3_column_blob(stmt, columnIdx);
+    int dataSize = sqlite3_column_bytes(stmt, columnIdx);
+    
+    if (dataBuffer == NULL) {
+        return nil;
+    }
+    
+    return [NSData dataWithBytes:(const void *)dataBuffer length:(NSUInteger)dataSize];
+}
+
+
+@end

Classes/GlobalStateExplorers/DatabaseBrowser/FLEXTableColumnHeader.h

@@ -0,0 +1,24 @@
+//
+//  FLEXTableContentHeaderCell.h
+//  FLEX
+//
+//  Created by Peng Tao on 15/11/26.
+//  Copyright © 2015年 f. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+typedef NS_ENUM(NSUInteger, FLEXTableColumnHeaderSortType) {
+    FLEXTableColumnHeaderSortTypeNone = 0,
+    FLEXTableColumnHeaderSortTypeAsc,
+    FLEXTableColumnHeaderSortTypeDesc,
+};
+
+@interface FLEXTableColumnHeader : UIView
+
+@property (nonatomic, strong) UILabel *label;
+
+- (void)changeSortStatusWithType:(FLEXTableColumnHeaderSortType)type;
+
+@end
+

Classes/GlobalStateExplorers/DatabaseBrowser/FLEXTableColumnHeader.m

@@ -0,0 +1,60 @@
+//
+//  FLEXTableContentHeaderCell.m
+//  FLEX
+//
+//  Created by Peng Tao on 15/11/26.
+//  Copyright © 2015年 f. All rights reserved.
+//
+
+#import "FLEXTableColumnHeader.h"
+
+@implementation FLEXTableColumnHeader
+{
+    UILabel *_arrowLabel;
+}
+
+
+- (instancetype)initWithFrame:(CGRect)frame
+{
+    self = [super initWithFrame:frame];
+    if (self) {
+        self.backgroundColor = [UIColor whiteColor];
+        
+        UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(5, 0, frame.size.width - 25, frame.size.height)];
+        label.font = [UIFont systemFontOfSize:13.0];
+        [self addSubview:label];
+        self.label = label;
+        
+        
+        _arrowLabel = [[UILabel alloc] initWithFrame:CGRectMake(frame.size.width - 20, 0, 20, frame.size.height)];
+        _arrowLabel.font = [UIFont systemFontOfSize:13.0];
+        [self addSubview:_arrowLabel];
+        
+        UIView *line = [[UIView alloc] initWithFrame:CGRectMake(frame.size.width - 1, 2, 1, frame.size.height - 4)];
+        line.backgroundColor = [UIColor colorWithWhite:0.803 alpha:0.850];
+        [self addSubview:line];
+        
+    }
+    return self;
+}
+
+- (void)changeSortStatusWithType:(FLEXTableColumnHeaderSortType)type
+{
+    switch (type) {
+        case FLEXTableColumnHeaderSortTypeNone:
+            _arrowLabel.text = @"";
+            break;
+        case FLEXTableColumnHeaderSortTypeAsc:
+            _arrowLabel.text = @"⬆️";
+            break;
+        case FLEXTableColumnHeaderSortTypeDesc:
+            _arrowLabel.text = @"⬇️";
+            break;
+    }
+}
+
+
+
+
+
+@end

Classes/GlobalStateExplorers/DatabaseBrowser/FLEXTableContentCell.h

@@ -0,0 +1,27 @@
+//
+//  FLEXTableContentCell.h
+//  FLEX
+//
+//  Created by Peng Tao on 15/11/24.
+//  Copyright © 2015年 f. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@class FLEXTableContentCell;
+@protocol FLEXTableContentCellDelegate <NSObject>
+
+@optional
+- (void)tableContentCell:(FLEXTableContentCell *)tableView labelDidTapWithText:(NSString *)text;
+
+@end
+
+@interface FLEXTableContentCell : UITableViewCell
+
+@property (nonatomic, strong) NSArray<UILabel *> *labels;
+
+@property (nonatomic, weak) id<FLEXTableContentCellDelegate> delegate;
+
++ (instancetype)cellWithTableView:(UITableView *)tableView columnNumber:(NSInteger)number;
+
+@end

Classes/GlobalStateExplorers/DatabaseBrowser/FLEXTableContentCell.m

@@ -0,0 +1,66 @@
+//
+//  FLEXTableContentCell.m
+//  FLEX
+//
+//  Created by Peng Tao on 15/11/24.
+//  Copyright © 2015年 f. All rights reserved.
+//
+
+#import "FLEXTableContentCell.h"
+#import "FLEXMultiColumnTableView.h"
+
+@interface FLEXTableContentCell ()
+
+@end
+
+@implementation FLEXTableContentCell
+
++ (instancetype)cellWithTableView:(UITableView *)tableView columnNumber:(NSInteger)number;
+{
+    static NSString *identifier = @"FLEXTableContentCell";
+    FLEXTableContentCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier];
+    if (!cell) {
+        cell = [[FLEXTableContentCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier];
+        NSMutableArray<UILabel *> *labels = [NSMutableArray array];
+        for (int i = 0; i < number ; i++) {
+            UILabel *label = [[UILabel alloc] initWithFrame:CGRectZero];
+            label.backgroundColor = [UIColor whiteColor];
+            label.font            = [UIFont systemFontOfSize:13.0];
+            label.textAlignment   = NSTextAlignmentLeft;
+            label.backgroundColor = [UIColor greenColor];
+            [labels addObject:label];
+            
+            UITapGestureRecognizer *gesture = [[UITapGestureRecognizer alloc] initWithTarget:cell
+                                                                                      action:@selector(labelDidTap:)];
+            [label addGestureRecognizer:gesture];
+            label.userInteractionEnabled = YES;
+            
+            [cell.contentView addSubview:label];
+            cell.contentView.backgroundColor = [UIColor whiteColor];
+        }
+        cell.labels = labels;
+    }
+    return cell;
+}
+
+- (void)layoutSubviews
+{
+    [super layoutSubviews];
+    CGFloat labelWidth  = self.contentView.frame.size.width / self.labels.count;
+    CGFloat labelHeight = self.contentView.frame.size.height;
+    for (int i = 0; i < self.labels.count; i++) {
+        UILabel *label = self.labels[i];
+        label.frame = CGRectMake(labelWidth * i + 5, 0, (labelWidth - 10), labelHeight);
+    }
+}
+
+
+- (void)labelDidTap:(UIGestureRecognizer *)gesture
+{
+    UILabel *label = (UILabel *)gesture.view;
+    if ([self.delegate respondsToSelector:@selector(tableContentCell:labelDidTapWithText:)]) {
+        [self.delegate tableContentCell:self labelDidTapWithText:label.text];
+    }
+}
+
+@end

Classes/GlobalStateExplorers/DatabaseBrowser/FLEXTableContentViewController.h

@@ -0,0 +1,16 @@
+//
+//  PTTableContentViewController.h
+//  PTDatabaseReader
+//
+//  Created by Peng Tao on 15/11/23.
+//  Copyright © 2015年 Peng Tao. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@interface FLEXTableContentViewController : UIViewController
+
+@property (nonatomic, strong) NSArray<NSString *> *columnsArray;
+@property (nonatomic, strong) NSArray<NSDictionary<NSString *, id> *> *contentsArray;
+
+@end

Classes/GlobalStateExplorers/DatabaseBrowser/FLEXTableContentViewController.m

@@ -0,0 +1,183 @@
+//
+//  PTTableContentViewController.m
+//  PTDatabaseReader
+//
+//  Created by Peng Tao on 15/11/23.
+//  Copyright © 2015年 Peng Tao. All rights reserved.
+//
+
+#import "FLEXTableContentViewController.h"
+#import "FLEXMultiColumnTableView.h"
+#import "FLEXWebViewController.h"
+
+
+@interface FLEXTableContentViewController ()<FLEXMultiColumnTableViewDataSource, FLEXMultiColumnTableViewDelegate>
+
+@property (nonatomic, strong) FLEXMultiColumnTableView *multiColumView;
+
+@end
+
+@implementation FLEXTableContentViewController
+
+- (void)viewDidLoad {
+    [super viewDidLoad];
+    self.edgesForExtendedLayout = UIRectEdgeNone;
+    [self.view addSubview:self.multiColumView];
+}
+
+- (void)viewWillAppear:(BOOL)animated
+{
+    [super viewWillAppear:animated];
+    [self.multiColumView reloadData];
+}
+
+#pragma mark -
+
+#pragma mark init SubView
+- (FLEXMultiColumnTableView *)multiColumView {
+    if (!_multiColumView) {
+        _multiColumView = [[FLEXMultiColumnTableView alloc] initWithFrame:
+                           CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
+        
+        _multiColumView.autoresizingMask          = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleTopMargin;
+        _multiColumView.backgroundColor           = [UIColor whiteColor];
+        _multiColumView.dataSource                = self;
+        _multiColumView.delegate                  = self;
+    }
+    return _multiColumView;
+}
+#pragma mark MultiColumnTableView DataSource
+
+- (NSInteger)numberOfColumnsInTableView:(FLEXMultiColumnTableView *)tableView
+{
+    return self.columnsArray.count;
+}
+- (NSInteger)numberOfRowsInTableView:(FLEXMultiColumnTableView *)tableView
+{
+    return self.contentsArray.count;
+}
+
+
+- (NSString *)columnNameInColumn:(NSInteger)column
+{
+    return self.columnsArray[column];
+}
+
+
+- (NSString *)rowNameInRow:(NSInteger)row
+{
+    return [NSString stringWithFormat:@"%ld",(long)row];
+}
+
+- (NSString *)contentAtColumn:(NSInteger)column row:(NSInteger)row
+{
+    if (self.contentsArray.count > row) {
+        NSDictionary<NSString *, id> *dic = self.contentsArray[row];
+        if (self.contentsArray.count > column) {
+            return [NSString stringWithFormat:@"%@",[dic objectForKey:self.columnsArray[column]]];
+        }
+    }
+    return @"";
+}
+
+- (NSArray *)contentAtRow:(NSInteger)row
+{
+    NSMutableArray *result = [NSMutableArray array];
+    if (self.contentsArray.count > row) {
+        NSDictionary<NSString *, id> *dic = self.contentsArray[row];
+        for (int i = 0; i < self.columnsArray.count; i ++) {
+            [result addObject:dic[self.columnsArray[i]]];
+        }
+        return result;
+    }
+    return nil;
+}
+
+- (CGFloat)multiColumnTableView:(FLEXMultiColumnTableView *)tableView
+      heightForContentCellInRow:(NSInteger)row
+{
+    return 40;
+}
+
+- (CGFloat)multiColumnTableView:(FLEXMultiColumnTableView *)tableView
+    widthForContentCellInColumn:(NSInteger)column
+{
+    return 120;
+}
+
+- (CGFloat)heightForTopHeaderInTableView:(FLEXMultiColumnTableView *)tableView
+{
+    return 40;
+}
+
+- (CGFloat)widthForLeftHeaderInTableView:(FLEXMultiColumnTableView *)tableView
+{
+    NSString *str = [NSString stringWithFormat:@"%lu",(unsigned long)self.contentsArray.count];
+    NSDictionary<NSString *, id> *attrs = @{@"NSFontAttributeName":[UIFont systemFontOfSize:17.0]};
+    CGSize size =   [str boundingRectWithSize:CGSizeMake(CGFLOAT_MAX, 14)
+                                      options:NSStringDrawingUsesLineFragmentOrigin
+                                   attributes:attrs context:nil].size;
+    return size.width + 20;
+}
+
+#pragma mark -
+#pragma mark MultiColumnTableView Delegate
+
+
+- (void)multiColumnTableView:(FLEXMultiColumnTableView *)tableView didTapLabelWithText:(NSString *)text
+{
+    FLEXWebViewController * detailViewController = [[FLEXWebViewController alloc] initWithText:text];
+    [self.navigationController pushViewController:detailViewController animated:YES];
+}
+
+- (void)multiColumnTableView:(FLEXMultiColumnTableView *)tableView didTapHeaderWithText:(NSString *)text sortType:(FLEXTableColumnHeaderSortType)sortType
+{
+    
+    NSArray<NSDictionary<NSString *, id> *> *sortContentData = [self.contentsArray sortedArrayUsingComparator:^NSComparisonResult(NSDictionary<NSString *, id> * obj1, NSDictionary<NSString *, id> * obj2) {
+        
+        if ([obj1 objectForKey:text] == [NSNull null]) {
+            return NSOrderedAscending;
+        }
+        if ([obj2 objectForKey:text] == [NSNull null]) {
+            return NSOrderedDescending;
+        }
+        
+        if (![[obj1 objectForKey:text] respondsToSelector:@selector(compare:)] && ![[obj2 objectForKey:text] respondsToSelector:@selector(compare:)]) {
+            return NSOrderedSame;
+        }
+        
+        NSComparisonResult result =  [[obj1 objectForKey:text] compare:[obj2 objectForKey:text]];
+        
+        return result;
+    }];
+    if (sortType == FLEXTableColumnHeaderSortTypeDesc) {
+        NSEnumerator *contentReverseEvumerator = [sortContentData reverseObjectEnumerator];
+        sortContentData = [NSArray arrayWithArray:[contentReverseEvumerator allObjects]];
+    }
+    
+    self.contentsArray = sortContentData;
+    [self.multiColumView reloadData];
+}
+
+#pragma mark -
+#pragma mark About Transition
+
+- (void)willTransitionToTraitCollection:(UITraitCollection *)newCollection
+              withTransitionCoordinator:(id <UIViewControllerTransitionCoordinator>)coordinator
+{
+    [super willTransitionToTraitCollection:newCollection
+                 withTransitionCoordinator:coordinator];
+    [coordinator animateAlongsideTransition:^(id <UIViewControllerTransitionCoordinatorContext> context) {
+        if (newCollection.verticalSizeClass == UIUserInterfaceSizeClassCompact) {
+            
+            self->_multiColumView.frame = CGRectMake(0, 32, self.view.frame.size.width, self.view.frame.size.height - 32);
+        }
+        else {
+            self->_multiColumView.frame = CGRectMake(0, 64, self.view.frame.size.width, self.view.frame.size.height - 64);
+        }
+        [self.view setNeedsLayout];
+    } completion:nil];
+}
+
+
+@end

Classes/GlobalStateExplorers/DatabaseBrowser/FLEXTableLeftCell.h

@@ -0,0 +1,17 @@
+//
+//  FLEXTableLeftCell.h
+//  FLEX
+//
+//  Created by Peng Tao on 15/11/24.
+//  Copyright © 2015年 f. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@interface FLEXTableLeftCell : UITableViewCell
+
+@property (nonatomic, strong) UILabel *titlelabel;
+
++ (instancetype)cellWithTableView:(UITableView *)tableView;
+
+@end

Classes/GlobalStateExplorers/DatabaseBrowser/FLEXTableLeftCell.m

@@ -0,0 +1,35 @@
+//
+//  FLEXTableLeftCell.m
+//  FLEX
+//
+//  Created by Peng Tao on 15/11/24.
+//  Copyright © 2015年 f. All rights reserved.
+//
+
+#import "FLEXTableLeftCell.h"
+
+@implementation FLEXTableLeftCell
+
++ (instancetype)cellWithTableView:(UITableView *)tableView
+{
+    static NSString *identifier = @"FLEXTableLeftCell";
+    FLEXTableLeftCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier];
+    
+    if (!cell) {
+        cell = [[FLEXTableLeftCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier];
+        UILabel *textLabel               = [[UILabel alloc] initWithFrame:CGRectZero];
+        textLabel.textAlignment          = NSTextAlignmentCenter;
+        textLabel.font                   = [UIFont systemFontOfSize:13.0];
+        textLabel.backgroundColor = [UIColor clearColor];
+        [cell.contentView addSubview:textLabel];
+        cell.titlelabel = textLabel;
+    }
+    return cell;
+}
+
+- (void)layoutSubviews
+{
+    [super layoutSubviews];
+    self.titlelabel.frame = self.contentView.frame;
+}
+@end

Classes/GlobalStateExplorers/DatabaseBrowser/FLEXTableListViewController.h

@@ -0,0 +1,16 @@
+//
+//  PTTableListViewController.h
+//  PTDatabaseReader
+//
+//  Created by Peng Tao on 15/11/23.
+//  Copyright © 2015年 Peng Tao. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@interface FLEXTableListViewController : UITableViewController
+
++ (BOOL)supportsExtension:(NSString *)extension;
+- (instancetype)initWithPath:(NSString *)path;
+
+@end

Classes/GlobalStateExplorers/DatabaseBrowser/FLEXTableListViewController.m

@@ -0,0 +1,137 @@
+//
+//  PTTableListViewController.m
+//  PTDatabaseReader
+//
+//  Created by Peng Tao on 15/11/23.
+//  Copyright © 2015年 Peng Tao. All rights reserved.
+//
+
+#import "FLEXTableListViewController.h"
+
+#import "FLEXDatabaseManager.h"
+#import "FLEXSQLiteDatabaseManager.h"
+#import "FLEXRealmDatabaseManager.h"
+
+#import "FLEXTableContentViewController.h"
+
+@interface FLEXTableListViewController ()
+{
+    id<FLEXDatabaseManager> _dbm;
+    NSString *_databasePath;
+}
+
+@property (nonatomic, strong) NSArray<NSString *> *tables;
+
++ (NSArray<NSString *> *)supportedSQLiteExtensions;
++ (NSArray<NSString *> *)supportedRealmExtensions;
+
+@end
+
+@implementation FLEXTableListViewController
+
+- (instancetype)initWithPath:(NSString *)path
+{
+    self = [super initWithStyle:UITableViewStyleGrouped];
+    if (self) {
+        _databasePath = [path copy];
+        _dbm = [self databaseManagerForFileAtPath:_databasePath];
+        [_dbm open];
+        [self getAllTables];
+    }
+    return self;
+}
+
+- (id<FLEXDatabaseManager>)databaseManagerForFileAtPath:(NSString *)path
+{
+    NSString *pathExtension = path.pathExtension.lowercaseString;
+    
+    NSArray<NSString *> *sqliteExtensions = [FLEXTableListViewController supportedSQLiteExtensions];
+    if ([sqliteExtensions indexOfObject:pathExtension] != NSNotFound) {
+        return [[FLEXSQLiteDatabaseManager alloc] initWithPath:path];
+    }
+    
+    NSArray<NSString *> *realmExtensions = [FLEXTableListViewController supportedRealmExtensions];
+    if (realmExtensions != nil && [realmExtensions indexOfObject:pathExtension] != NSNotFound) {
+        return [[FLEXRealmDatabaseManager alloc] initWithPath:path];
+    }
+    
+    return nil;
+}
+
+- (void)getAllTables
+{
+    NSArray<NSDictionary<NSString *, id> *> *resultArray = [_dbm queryAllTables];
+    NSMutableArray<NSString *> *array = [NSMutableArray array];
+    for (NSDictionary<NSString *, id> *dict in resultArray) {
+        NSString *columnName = (NSString *)dict[@"name"] ?: @"";
+        [array addObject:columnName];
+    }
+    self.tables = array;
+}
+
+- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
+{
+    return self.tables.count;
+}
+
+- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
+{
+    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"FLEXTableListViewControllerCell"];
+    if (!cell) {
+        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
+                                      reuseIdentifier:@"FLEXTableListViewControllerCell"];
+    }
+    cell.textLabel.text = self.tables[indexPath.row];
+    return cell;
+}
+
+
+- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
+{
+    FLEXTableContentViewController *contentViewController = [[FLEXTableContentViewController alloc] init];
+    
+    contentViewController.contentsArray = [_dbm queryAllDataWithTableName:self.tables[indexPath.row]];
+    contentViewController.columnsArray = [_dbm queryAllColumnsWithTableName:self.tables[indexPath.row]];
+    
+    contentViewController.title = self.tables[indexPath.row];
+    [self.navigationController pushViewController:contentViewController animated:YES];
+}
+
+
+- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
+{
+    return [NSString stringWithFormat:@"%lu tables", (unsigned long)self.tables.count];
+}
+
++ (BOOL)supportsExtension:(NSString *)extension
+{
+    extension = extension.lowercaseString;
+    
+    NSArray<NSString *> *sqliteExtensions = [FLEXTableListViewController supportedSQLiteExtensions];
+    if (sqliteExtensions.count > 0 && [sqliteExtensions indexOfObject:extension] != NSNotFound) {
+        return YES;
+    }
+    
+    NSArray<NSString *> *realmExtensions = [FLEXTableListViewController supportedRealmExtensions];
+    if (realmExtensions.count > 0 && [realmExtensions indexOfObject:extension] != NSNotFound) {
+        return YES;
+    }
+    
+    return NO;
+}
+
++ (NSArray<NSString *> *)supportedSQLiteExtensions
+{
+    return @[@"db", @"sqlite", @"sqlite3"];
+}
+
++ (NSArray<NSString *> *)supportedRealmExtensions
+{
+    if (NSClassFromString(@"RLMRealm") == nil) {
+        return nil;
+    }
+    
+    return @[@"realm"];
+}
+
+@end

Classes/GlobalStateExplorers/DatabaseBrowser/LICENSE

@@ -0,0 +1,21 @@
+
+FMDB
+Copyright (c) 2008-2014 Flying Meat Inc.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

Classes/GlobalStateExplorers/FLEXClassesTableViewController.m

@@ -14,8 +14,8 @@
 
 @interface FLEXClassesTableViewController () <UISearchBarDelegate>
 
-@property (nonatomic, strong) NSArray *classNames;
-@property (nonatomic, strong) NSArray *filteredClassNames;
+@property (nonatomic, strong) NSArray<NSString *> *classNames;
+@property (nonatomic, strong) NSArray<NSString *> *filteredClassNames;
 @property (nonatomic, strong) UISearchBar *searchBar;
 
 @end
@@ -42,7 +42,7 @@
     }
 }
 
-- (void)setClassNames:(NSArray *)classNames
+- (void)setClassNames:(NSArray<NSString *> *)classNames
 {
     _classNames = classNames;
     self.filteredClassNames = classNames;
@@ -53,7 +53,7 @@
     unsigned int classNamesCount = 0;
     const char **classNames = objc_copyClassNamesForImage([self.binaryImageName UTF8String], &classNamesCount);
     if (classNames) {
-        NSMutableArray *classNameStrings = [NSMutableArray array];
+        NSMutableArray<NSString *> *classNameStrings = [NSMutableArray array];
         for (unsigned int i = 0; i < classNamesCount; i++) {
             const char *className = classNames[i];
             NSString *classNameString = [NSString stringWithUTF8String:className];
@@ -68,7 +68,7 @@
 
 - (void)updateTitle
 {
-    NSString *shortImageName = [[self.binaryImageName componentsSeparatedByString:@"/"] lastObject];
+    NSString *shortImageName = self.binaryImageName.lastPathComponent;
     self.title = [NSString stringWithFormat:@"%@ Classes (%lu)", shortImageName, (unsigned long)[self.filteredClassNames count]];
 }
 
@@ -131,7 +131,7 @@
 
 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
 {
-    NSString *className = [self.filteredClassNames objectAtIndex:indexPath.row];
+    NSString *className = self.filteredClassNames[indexPath.row];
     Class selectedClass = objc_getClass([className UTF8String]);
     FLEXObjectExplorerViewController *objectExplorer = [FLEXObjectExplorerFactory explorerViewControllerForObject:selectedClass];
     [self.navigationController pushViewController:objectExplorer animated:YES];

Classes/GlobalStateExplorers/FLEXCookiesTableViewController.h

@@ -0,0 +1,13 @@
+//
+//  FLEXCookiesTableViewController.h
+//  FLEX
+//
+//  Created by Rich Robinson on 19/10/2015.
+//  Copyright © 2015 Flipboard. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@interface FLEXCookiesTableViewController : UITableViewController
+
+@end

Classes/GlobalStateExplorers/FLEXCookiesTableViewController.m

@@ -0,0 +1,71 @@
+//
+//  FLEXCookiesTableViewController.m
+//  FLEX
+//
+//  Created by Rich Robinson on 19/10/2015.
+//  Copyright © 2015 Flipboard. All rights reserved.
+//
+
+#import "FLEXCookiesTableViewController.h"
+#import "FLEXObjectExplorerFactory.h"
+#import "FLEXUtility.h"
+
+@interface FLEXCookiesTableViewController ()
+
+@property (nonatomic, strong) NSArray<NSHTTPCookie *> *cookies;
+
+@end
+
+@implementation FLEXCookiesTableViewController
+
+- (id)initWithStyle:(UITableViewStyle)style {
+    self = [super initWithStyle:style];
+    
+    if (self) {
+        self.title = @"Cookies";
+
+        NSSortDescriptor *nameSortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"name" ascending:YES selector:@selector(caseInsensitiveCompare:)];
+        _cookies = [[NSHTTPCookieStorage sharedHTTPCookieStorage].cookies sortedArrayUsingDescriptors:@[nameSortDescriptor]];
+    }
+    
+    return self;
+}
+
+- (NSHTTPCookie *)cookieForRowAtIndexPath:(NSIndexPath *)indexPath {
+    return self.cookies[indexPath.row];
+}
+
+- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
+    return 1;
+}
+
+- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
+    return self.cookies.count;
+}
+
+- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
+    static NSString *CellIdentifier = @"Cell";
+    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
+    if (!cell) {
+        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
+        cell.textLabel.font = [FLEXUtility defaultTableViewCellLabelFont];
+        cell.detailTextLabel.font = [FLEXUtility defaultTableViewCellLabelFont];
+        cell.detailTextLabel.textColor = [UIColor grayColor];
+        cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
+    }
+    
+    NSHTTPCookie *cookie = [self cookieForRowAtIndexPath:indexPath];
+    cell.textLabel.text = [NSString stringWithFormat:@"%@ (%@)", cookie.name, cookie.value];
+    cell.detailTextLabel.text = cookie.domain;
+    
+    return cell;
+}
+
+- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
+    NSHTTPCookie *cookie = [self cookieForRowAtIndexPath:indexPath];
+    UIViewController *cookieViewController = (UIViewController *)[FLEXObjectExplorerFactory explorerViewControllerForObject:cookie];
+    
+    [self.navigationController pushViewController:cookieViewController animated:YES];
+}
+
+@end

Classes/GlobalStateExplorers/FLEXFileBrowserFileOperationController.m

@@ -13,6 +13,8 @@
 
 @property (nonatomic, copy, readonly) NSString *path;
 
+- (instancetype)initWithPath:(NSString *)path NS_DESIGNATED_INITIALIZER;
+
 @end
 
 @implementation FLEXFileBrowserFileDeleteOperationController
@@ -74,6 +76,8 @@
 
 @property (nonatomic, copy, readonly) NSString *path;
 
+- (instancetype)initWithPath:(NSString *)path NS_DESIGNATED_INITIALIZER;
+
 @end
 
 @implementation FLEXFileBrowserFileRenameOperationController

Classes/GlobalStateExplorers/FLEXFileBrowserSearchOperation.h

@@ -1,6 +1,6 @@
 //
 //  FLEXFileBrowserSearchOperation.h
-//  UICatalog
+//  FLEX
 //
 //  Created by 啟倫 陳 on 2014/8/4.
 //  Copyright (c) 2014年 f. All rights reserved.
@@ -20,6 +20,6 @@
 
 @protocol FLEXFileBrowserSearchOperationDelegate <NSObject>
 
-- (void)fileBrowserSearchOperationResult:(NSArray *)searchResult size:(uint64_t)size;
+- (void)fileBrowserSearchOperationResult:(NSArray<NSString *> *)searchResult size:(uint64_t)size;
 
 @end

Classes/GlobalStateExplorers/FLEXFileBrowserSearchOperation.m

@@ -1,6 +1,6 @@
 //
 //  FLEXFileBrowserSearchOperation.m
-//  UICatalog
+//  FLEX
 //
 //  Created by 啟倫 陳 on 2014/8/4.
 //  Copyright (c) 2014年 f. All rights reserved.
@@ -38,7 +38,7 @@
 - (uint64_t)totalSizeAtPath:(NSString *)path
 {
     NSFileManager *fileManager = [NSFileManager defaultManager];
-    NSDictionary *attributes = [fileManager attributesOfItemAtPath:path error:NULL];
+    NSDictionary<NSString *, id> *attributes = [fileManager attributesOfItemAtPath:path error:NULL];
     uint64_t totalSize = [attributes fileSize];
     
     for (NSString *fileName in [fileManager enumeratorAtPath:path]) {
@@ -65,16 +65,16 @@
 - (void)main
 {
     NSFileManager *fileManager = [NSFileManager defaultManager];
-    NSMutableArray *searchPaths = [NSMutableArray array];
-    NSMutableDictionary *sizeMapping = [NSMutableDictionary dictionary];
+    NSMutableArray<NSString *> *searchPaths = [NSMutableArray array];
+    NSMutableDictionary<NSString *, NSNumber *> *sizeMapping = [NSMutableDictionary dictionary];
     uint64_t totalSize = 0;
-    NSMutableArray *stack = [NSMutableArray array];
+    NSMutableArray<NSString *> *stack = [NSMutableArray array];
     [stack flex_push:self.path];
     
     //recursive found all match searchString paths, and precomputing there size
     while ([stack count]) {
         NSString *currentPath = [stack flex_pop];
-        NSArray *directoryPath = [fileManager contentsOfDirectoryAtPath:currentPath error:nil];
+        NSArray<NSString *> *directoryPath = [fileManager contentsOfDirectoryAtPath:currentPath error:nil];
         
         for (NSString *subPath in directoryPath) {
             NSString *fullPath = [currentPath stringByAppendingPathComponent:subPath];
@@ -99,7 +99,7 @@
     }
     
     //sort
-    NSArray *sortedArray = [searchPaths sortedArrayUsingComparator:^NSComparisonResult(NSString *path1, NSString *path2) {
+    NSArray<NSString *> *sortedArray = [searchPaths sortedArrayUsingComparator:^NSComparisonResult(NSString *path1, NSString *path2) {
         uint64_t pathSize1 = [sizeMapping[path1] unsignedLongLongValue];
         uint64_t pathSize2 = [sizeMapping[path2] unsignedLongLongValue];
         if (pathSize1 < pathSize2) {

Classes/GlobalStateExplorers/FLEXFileBrowserTableViewController.h

@@ -10,7 +10,7 @@
 
 #import "FLEXFileBrowserSearchOperation.h"
 
-@interface FLEXFileBrowserTableViewController : UITableViewController <UISearchDisplayDelegate, FLEXFileBrowserSearchOperationDelegate>
+@interface FLEXFileBrowserTableViewController : UITableViewController
 
 - (id)initWithPath:(NSString *)path;
 

Classes/GlobalStateExplorers/FLEXFileBrowserTableViewController.m

@@ -11,22 +11,19 @@
 #import "FLEXUtility.h"
 #import "FLEXWebViewController.h"
 #import "FLEXImagePreviewViewController.h"
+#import "FLEXTableListViewController.h"
 
 @interface FLEXFileBrowserTableViewCell : UITableViewCell
 @end
 
-@interface FLEXFileBrowserTableViewController () <FLEXFileBrowserFileOperationControllerDelegate>
+@interface FLEXFileBrowserTableViewController () <FLEXFileBrowserFileOperationControllerDelegate, FLEXFileBrowserSearchOperationDelegate, UISearchResultsUpdating, UISearchControllerDelegate>
 
 @property (nonatomic, copy) NSString *path;
-@property (nonatomic, copy) NSArray *childPaths;
-@property (nonatomic, copy) NSString *searchString;
-@property (nonatomic, strong) NSArray *searchPaths;
+@property (nonatomic, copy) NSArray<NSString *> *childPaths;
+@property (nonatomic, strong) NSArray<NSString *> *searchPaths;
 @property (nonatomic, strong) NSNumber *recursiveSize;
 @property (nonatomic, strong) NSNumber *searchPathsSize;
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wdeprecated-declarations"
-@property (nonatomic, strong) UISearchDisplayController *searchController;
-#pragma clang diagnostic pop
+@property (nonatomic, strong) UISearchController *searchController;
 @property (nonatomic) NSOperationQueue *operationQueue;
 @property (nonatomic, strong) UIDocumentInteractionController *documentController;
 @property (nonatomic, strong) id<FLEXFileBrowserFileOperationController> fileOperationController;
@@ -47,36 +44,30 @@
         self.path = path;
         self.title = [path lastPathComponent];
         self.operationQueue = [NSOperationQueue new];
-        
-        //add search controller
-        UISearchBar *searchBar = [UISearchBar new];
-        [searchBar sizeToFit];
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wdeprecated-declarations"
-        self.searchController = [[UISearchDisplayController alloc] initWithSearchBar:searchBar contentsController:self];
-#pragma clang diagnostic pop
+
+        self.searchController = [[UISearchController alloc] initWithSearchResultsController:nil];
+        self.searchController.searchResultsUpdater = self;
         self.searchController.delegate = self;
-        self.searchController.searchResultsDataSource = self;
-        self.searchController.searchResultsDelegate = self;
+        self.searchController.dimsBackgroundDuringPresentation = NO;
         self.tableView.tableHeaderView = self.searchController.searchBar;
-        
+
         //computing path size
         FLEXFileBrowserTableViewController *__weak weakSelf = self;
         dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
             NSFileManager *fileManager = [NSFileManager defaultManager];
-            NSDictionary *attributes = [fileManager attributesOfItemAtPath:path error:NULL];
+            NSDictionary<NSString *, id> *attributes = [fileManager attributesOfItemAtPath:path error:NULL];
             uint64_t totalSize = [attributes fileSize];
-            
+
             for (NSString *fileName in [fileManager enumeratorAtPath:path]) {
                 attributes = [fileManager attributesOfItemAtPath:[path stringByAppendingPathComponent:fileName] error:NULL];
                 totalSize += [attributes fileSize];
-                
+
                 // Bail if the interested view controller has gone away.
                 if (!weakSelf) {
                     return;
                 }
             }
-            
+
             dispatch_async(dispatch_get_main_queue(), ^{
                 FLEXFileBrowserTableViewController *__strong strongSelf = weakSelf;
                 strongSelf.recursiveSize = @(totalSize);
@@ -95,33 +86,28 @@
 {
     [super viewDidLoad];
 
-    UIMenuItem *renameMenuItem = [[UIMenuItem alloc] initWithTitle:@"Rename" action:@selector(fileBrowserRename:)];
-    UIMenuItem *deleteMenuItem = [[UIMenuItem alloc] initWithTitle:@"Delete" action:@selector(fileBrowserDelete:)];
-    [UIMenuController sharedMenuController].menuItems = @[renameMenuItem, deleteMenuItem];
 }
 
 #pragma mark - FLEXFileBrowserSearchOperationDelegate
 
-- (void)fileBrowserSearchOperationResult:(NSArray *)searchResult size:(uint64_t)size
+- (void)fileBrowserSearchOperationResult:(NSArray<NSString *> *)searchResult size:(uint64_t)size
 {
     self.searchPaths = searchResult;
     self.searchPathsSize = @(size);
-    [self.searchController.searchResultsTableView reloadData];
+    [self.tableView reloadData];
 }
 
-#pragma mark - UISearchDisplayDelegate
+#pragma mark - UISearchResultsUpdating
 
-- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString
+- (void)updateSearchResultsForSearchController:(UISearchController *)searchController
 {
-    self.searchString = searchString;
-    [self reloadSearchPaths];
-
-    return YES;
+    [self reloadDisplayedPaths];
 }
 
-- (void)searchDisplayController:(UISearchDisplayController *)controller willHideSearchResultsTableView:(UITableView *)tableView
+#pragma mark - UISearchControllerDelegate
+
+- (void)willDismissSearchController:(UISearchController *)searchController
 {
-    //confirm to clear all operations
     [self.operationQueue cancelAllOperations];
     [self reloadChildPaths];
     [self.tableView reloadData];
@@ -137,47 +123,29 @@
 
 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
 {
-    if (tableView == self.tableView) {
-        return [self.childPaths count];
-    } else {
-        return [self.searchPaths count];
-    }
+    return self.searchController.isActive ? [self.searchPaths count] : [self.childPaths count];
 }
 
 - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
 {
-    NSNumber *currentSize = nil;
-    NSArray *currentPaths = nil;
-    
-    if (tableView == self.tableView) {
-        currentSize = self.recursiveSize;
-        currentPaths = self.childPaths;
-    } else {
-        currentSize = self.searchPathsSize;
-        currentPaths = self.searchPaths;
-    }
-    
+    BOOL isSearchActive = self.searchController.isActive;
+    NSNumber *currentSize = isSearchActive ? self.searchPathsSize : self.recursiveSize;
+    NSArray<NSString *> *currentPaths = isSearchActive ? self.searchPaths : self.childPaths;
+
     NSString *sizeString = nil;
     if (!currentSize) {
         sizeString = @"Computing size…";
     } else {
         sizeString = [NSByteCountFormatter stringFromByteCount:[currentSize longLongValue] countStyle:NSByteCountFormatterCountStyleFile];
     }
-    
+
     return [NSString stringWithFormat:@"%lu files (%@)", (unsigned long)[currentPaths count], sizeString];
 }
 
 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
 {
-    NSString *fullPath = nil;
-    if (tableView == self.tableView) {
-        NSString *subpath = [self.childPaths objectAtIndex:indexPath.row];
-        fullPath = [self.path stringByAppendingPathComponent:subpath];
-    } else {
-        fullPath = [self.searchPaths objectAtIndex:indexPath.row];
-    }
-    
-    NSDictionary *attributes = [[NSFileManager defaultManager] attributesOfItemAtPath:fullPath error:NULL];
+    NSString *fullPath = [self filePathAtIndexPath:indexPath];
+    NSDictionary<NSString *, id> *attributes = [[NSFileManager defaultManager] attributesOfItemAtPath:fullPath error:NULL];
     BOOL isDirectory = [[attributes fileType] isEqual:NSFileTypeDirectory];
     NSString *subtitle = nil;
     if (isDirectory) {
@@ -187,15 +155,15 @@
         NSString *sizeString = [NSByteCountFormatter stringFromByteCount:[attributes fileSize] countStyle:NSByteCountFormatterCountStyleFile];
         subtitle = [NSString stringWithFormat:@"%@ - %@", sizeString, [attributes fileModificationDate]];
     }
-    
+
     static NSString *textCellIdentifier = @"textCell";
     static NSString *imageCellIdentifier = @"imageCell";
     UITableViewCell *cell = nil;
-    
+
     // Separate image and text only cells because otherwise the separator lines get out-of-whack on image cells reused with text only.
     BOOL showImagePreview = [FLEXUtility isImagePathExtension:[fullPath pathExtension]];
     NSString *cellIdentifier = showImagePreview ? imageCellIdentifier : textCellIdentifier;
-    
+
     if (!cell) {
         cell = [[FLEXFileBrowserTableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellIdentifier];
         cell.textLabel.font = [FLEXUtility defaultTableViewCellLabelFont];
@@ -206,61 +174,57 @@
     NSString *cellTitle = [fullPath lastPathComponent];
     cell.textLabel.text = cellTitle;
     cell.detailTextLabel.text = subtitle;
-    
+
     if (showImagePreview) {
         cell.imageView.contentMode = UIViewContentModeScaleAspectFit;
         cell.imageView.image = [UIImage imageWithContentsOfFile:fullPath];
     }
-    
+
     return cell;
 }
 
 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
 {
-    NSString *subpath = nil;
-    NSString *fullPath = nil;
-    
-    if (tableView == self.tableView) {
-        subpath = [self.childPaths objectAtIndex:indexPath.row];
-        fullPath = [self.path stringByAppendingPathComponent:subpath];
-    } else {
-        fullPath = [self.searchPaths objectAtIndex:indexPath.row];
-        subpath = [fullPath lastPathComponent];
-    }
-    
+    NSString *fullPath = [self filePathAtIndexPath:indexPath];
+    NSString *subpath = [fullPath lastPathComponent];
+    NSString *pathExtension = [subpath pathExtension];
+
     BOOL isDirectory = NO;
     BOOL stillExists = [[NSFileManager defaultManager] fileExistsAtPath:fullPath isDirectory:&isDirectory];
     if (stillExists) {
         UIViewController *drillInViewController = nil;
         if (isDirectory) {
             drillInViewController = [[[self class] alloc] initWithPath:fullPath];
-        } else if ([FLEXUtility isImagePathExtension:[fullPath pathExtension]]) {
+        } else if ([FLEXUtility isImagePathExtension:pathExtension]) {
             UIImage *image = [UIImage imageWithContentsOfFile:fullPath];
             drillInViewController = [[FLEXImagePreviewViewController alloc] initWithImage:image];
         } else {
             // Special case keyed archives, json, and plists to get more readable data.
             NSString *prettyString = nil;
-            if ([[subpath pathExtension] isEqual:@"archive"]) {
+            if ([pathExtension isEqual:@"archive"] || [pathExtension isEqual:@"coded"]) {
                 prettyString = [[NSKeyedUnarchiver unarchiveObjectWithFile:fullPath] description];
-            } else if ([[subpath pathExtension] isEqualToString:@"json"]) {
+            } else if ([pathExtension isEqualToString:@"json"]) {
                 prettyString = [FLEXUtility prettyJSONStringFromData:[NSData dataWithContentsOfFile:fullPath]];
-            } else if ([[subpath pathExtension] isEqualToString:@"plist"]) {
+            } else if ([pathExtension isEqualToString:@"plist"]) {
                 NSData *fileData = [NSData dataWithContentsOfFile:fullPath];
                 prettyString = [[NSPropertyListSerialization propertyListWithData:fileData options:0 format:NULL error:NULL] description];
             }
-            
+
             if ([prettyString length] > 0) {
                 drillInViewController = [[FLEXWebViewController alloc] initWithText:prettyString];
-            } else if ([FLEXWebViewController supportsPathExtension:[subpath pathExtension]]) {
+            } else if ([FLEXWebViewController supportsPathExtension:pathExtension]) {
                 drillInViewController = [[FLEXWebViewController alloc] initWithURL:[NSURL fileURLWithPath:fullPath]];
-            } else {
+            } else if ([FLEXTableListViewController supportsExtension:subpath.pathExtension]) {
+                drillInViewController = [[FLEXTableListViewController alloc] initWithPath:fullPath];
+            }
+            else {
                 NSString *fileString = [NSString stringWithContentsOfFile:fullPath encoding:NSUTF8StringEncoding error:NULL];
                 if ([fileString length] > 0) {
                     drillInViewController = [[FLEXWebViewController alloc] initWithText:fileString];
                 }
             }
         }
-        
+
         if (drillInViewController) {
             drillInViewController.title = [subpath lastPathComponent];
             [self.navigationController pushViewController:drillInViewController animated:YES];
@@ -276,12 +240,25 @@
 
 - (BOOL)tableView:(UITableView *)tableView shouldShowMenuForRowAtIndexPath:(NSIndexPath *)indexPath
 {
+    UIMenuItem *renameMenuItem = [[UIMenuItem alloc] initWithTitle:@"Rename" action:@selector(fileBrowserRename:)];
+    UIMenuItem *deleteMenuItem = [[UIMenuItem alloc] initWithTitle:@"Delete" action:@selector(fileBrowserDelete:)];
+    NSMutableArray *menus = [NSMutableArray arrayWithObjects:renameMenuItem, deleteMenuItem, nil];
+
+    NSString *fullPath = [self filePathAtIndexPath:indexPath];
+    NSError *error = nil;
+    NSDictionary *attributes = [NSFileManager.defaultManager attributesOfItemAtPath:fullPath error:&error];
+    if (error == nil && [attributes fileType] != NSFileTypeDirectory) {
+        UIMenuItem *shareMenuItem = [[UIMenuItem alloc] initWithTitle:@"Share" action:@selector(fileBrowserShare:)];
+        [menus addObject:shareMenuItem];
+    }
+    [UIMenuController sharedMenuController].menuItems = menus;
+
     return YES;
 }
 
 - (BOOL)tableView:(UITableView *)tableView canPerformAction:(SEL)action forRowAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender
 {
-    return action == @selector(fileBrowserDelete:) || action == @selector(fileBrowserRename:);
+    return action == @selector(fileBrowserDelete:) || action == @selector(fileBrowserRename:) || action == @selector(fileBrowserShare:);
 }
 
 - (void)tableView:(UITableView *)tableView performAction:(SEL)action forRowAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender
@@ -309,16 +286,8 @@
 
 - (void)fileBrowserRename:(UITableViewCell *)sender
 {
-    NSString *fullPath = nil;
-
     NSIndexPath *indexPath = [self.tableView indexPathForCell:sender];
-    if (indexPath) {
-        NSString *subpath = [self.childPaths objectAtIndex:indexPath.row];
-        fullPath = [self.path stringByAppendingPathComponent:subpath];
-    } else {
-        indexPath = [self.searchController.searchResultsTableView indexPathForCell:sender];
-        fullPath = [self.searchPaths objectAtIndex:indexPath.row];
-    }
+    NSString *fullPath = [self filePathAtIndexPath:indexPath];
 
     self.fileOperationController = [[FLEXFileBrowserFileRenameOperationController alloc] initWithPath:fullPath];
     self.fileOperationController.delegate = self;
@@ -327,36 +296,41 @@
 
 - (void)fileBrowserDelete:(UITableViewCell *)sender
 {
-    NSString *fullPath = nil;
-
     NSIndexPath *indexPath = [self.tableView indexPathForCell:sender];
-    if (indexPath) {
-        NSString *subpath = [self.childPaths objectAtIndex:indexPath.row];
-        fullPath = [self.path stringByAppendingPathComponent:subpath];
-    } else {
-        indexPath = [self.searchController.searchResultsTableView indexPathForCell:sender];
-        fullPath = [self.searchPaths objectAtIndex:indexPath.row];
-    }
+    NSString *fullPath = [self filePathAtIndexPath:indexPath];
 
     self.fileOperationController = [[FLEXFileBrowserFileDeleteOperationController alloc] initWithPath:fullPath];
     self.fileOperationController.delegate = self;
     [self.fileOperationController show];
 }
 
+- (void)fileBrowserShare:(UITableViewCell *)sender
+{
+    NSIndexPath *indexPath = [self.tableView indexPathForCell:sender];
+    NSString *fullPath = [self filePathAtIndexPath:indexPath];
+
+    UIActivityViewController *activityViewController = [[UIActivityViewController alloc] initWithActivityItems:@[fullPath] applicationActivities:nil];
+    [self presentViewController:activityViewController animated:true completion:nil];
+}
+
 - (void)reloadDisplayedPaths
 {
     if (self.searchController.isActive) {
         [self reloadSearchPaths];
-        [self.searchController.searchResultsTableView reloadData];
     } else {
         [self reloadChildPaths];
-        [self.tableView reloadData];
     }
+    [self.tableView reloadData];
 }
 
 - (void)reloadChildPaths
 {
-    self.childPaths = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:self.path error:NULL];
+    NSMutableArray<NSString *> *childPaths = [NSMutableArray array];
+    NSArray<NSString *> *subpaths = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:self.path error:NULL];
+    for (NSString *subpath in subpaths) {
+        [childPaths addObject:[self.path stringByAppendingPathComponent:subpath]];
+    }
+    self.childPaths = childPaths;
 }
 
 - (void)reloadSearchPaths
@@ -366,11 +340,16 @@
 
     //clear pre search request and start a new one
     [self.operationQueue cancelAllOperations];
-    FLEXFileBrowserSearchOperation *newOperation = [[FLEXFileBrowserSearchOperation alloc] initWithPath:self.path searchString:self.searchString];
+    FLEXFileBrowserSearchOperation *newOperation = [[FLEXFileBrowserSearchOperation alloc] initWithPath:self.path searchString:self.searchController.searchBar.text];
     newOperation.delegate = self;
     [self.operationQueue addOperation:newOperation];
 }
 
+- (NSString *)filePathAtIndexPath:(NSIndexPath *)indexPath
+{
+    return self.searchController.isActive ? self.searchPaths[indexPath.row] : self.childPaths[indexPath.row];
+}
+
 @end
 
 
@@ -388,4 +367,10 @@
     [[UIApplication sharedApplication] sendAction:_cmd to:target from:self forEvent:nil];
 }
 
+- (void)fileBrowserShare:(UIMenuController *)sender
+{
+    id target = [self.nextResponder targetForAction:_cmd withSender:sender];
+    [[UIApplication sharedApplication] sendAction:_cmd to:target from:self forEvent:nil];
+}
+
 @end

Classes/GlobalStateExplorers/FLEXGlobalsTableViewController.m

@@ -14,6 +14,7 @@
 #import "FLEXObjectExplorerFactory.h"
 #import "FLEXLiveObjectsTableViewController.h"
 #import "FLEXFileBrowserTableViewController.h"
+#import "FLEXCookiesTableViewController.h"
 #import "FLEXGlobalsTableViewControllerEntry.h"
 #import "FLEXManager+Private.h"
 #import "FLEXSystemLogTableViewController.h"
@@ -26,11 +27,13 @@ typedef NS_ENUM(NSUInteger, FLEXGlobalsRow) {
     FLEXGlobalsRowSystemLog,
     FLEXGlobalsRowLiveObjects,
     FLEXGlobalsRowFileBrowser,
+    FLEXGlobalsCookies,    
     FLEXGlobalsRowSystemLibraries,
     FLEXGlobalsRowAppClasses,
     FLEXGlobalsRowAppDelegate,
     FLEXGlobalsRowRootViewController,
     FLEXGlobalsRowUserDefaults,
+    FLEXGlobalsRowMainBundle,
     FLEXGlobalsRowApplication,
     FLEXGlobalsRowKeyWindow,
     FLEXGlobalsRowMainScreen,
@@ -40,17 +43,15 @@ typedef NS_ENUM(NSUInteger, FLEXGlobalsRow) {
 
 @interface FLEXGlobalsTableViewController ()
 
-/// [FLEXGlobalsTableViewControllerEntry *]
-@property (nonatomic, readonly, copy) NSArray *entries;
+@property (nonatomic, readonly, copy) NSArray<FLEXGlobalsTableViewControllerEntry *> *entries;
 
 @end
 
 @implementation FLEXGlobalsTableViewController
 
-/// [FLEXGlobalsTableViewControllerEntry *]
-+ (NSArray *)defaultGlobalEntries
++ (NSArray<FLEXGlobalsTableViewControllerEntry *> *)defaultGlobalEntries
 {
-    NSMutableArray *defaultGlobalEntries = [NSMutableArray array];
+    NSMutableArray<FLEXGlobalsTableViewControllerEntry *> *defaultGlobalEntries = [NSMutableArray array];
 
     for (FLEXGlobalsRow defaultRowIndex = 0; defaultRowIndex < FLEXGlobalsRowCount; defaultRowIndex++) {
         FLEXGlobalsTableViewControllerEntryNameFuture titleFuture = nil;
@@ -123,6 +124,16 @@ typedef NS_ENUM(NSUInteger, FLEXGlobalsRow) {
                 };
                 break;
 
+            case FLEXGlobalsRowMainBundle:
+                titleFuture = ^NSString *{
+                    return @"📦  +[NSBundle mainBundle]";
+                };
+                viewControllerFuture = ^UIViewController *{
+                    NSBundle *mainBundle = [NSBundle mainBundle];
+                    return [FLEXObjectExplorerFactory explorerViewControllerForObject:mainBundle];
+                };
+                break;
+
             case FLEXGlobalsRowApplication:
                 titleFuture = ^NSString *{
                     return @"💾  +[UIApplication sharedApplication]";
@@ -162,6 +173,15 @@ typedef NS_ENUM(NSUInteger, FLEXGlobalsRow) {
                 };
                 break;
 
+            case FLEXGlobalsCookies:
+                titleFuture = ^NSString *{
+                    return @"🍪  Cookies";
+                };
+                viewControllerFuture = ^UIViewController *{
+                    return [[FLEXCookiesTableViewController alloc] init];
+                };
+                break;                
+                
             case FLEXGlobalsRowFileBrowser:
                 titleFuture = ^NSString *{
                     return @"📁  File Browser";

Classes/GlobalStateExplorers/FLEXInstancesTableViewController.m

@@ -12,16 +12,49 @@
 #import "FLEXRuntimeUtility.h"
 #import "FLEXUtility.h"
 #import "FLEXHeapEnumerator.h"
+#import "FLEXObjectRef.h"
+#import <malloc/malloc.h>
+
 
 @interface FLEXInstancesTableViewController ()
 
-@property (nonatomic, strong) NSArray *instances;
-@property (nonatomic, strong) NSArray *fieldNames;
+/// Array of [[section], [section], ...]
+/// where [section] is [["row title", instance], ["row title", instance], ...]
+@property (nonatomic) NSArray<FLEXObjectRef *> *instances;
+@property (nonatomic) NSArray<NSArray<FLEXObjectRef*>*> *sections;
+@property (nonatomic) NSArray<NSString *> *sectionTitles;
+@property (nonatomic) NSArray<NSPredicate *> *predicates;
+@property (nonatomic, readonly) NSInteger maxSections;
 
 @end
 
 @implementation FLEXInstancesTableViewController
 
+- (id)initWithReferences:(NSArray<FLEXObjectRef *> *)references {
+    return [self initWithReferences:references predicates:nil sectionTitles:nil];
+}
+
+- (id)initWithReferences:(NSArray<FLEXObjectRef *> *)references
+              predicates:(NSArray<NSPredicate *> *)predicates
+           sectionTitles:(NSArray<NSString *> *)sectionTitles {
+    NSParameterAssert(predicates.count == sectionTitles.count);
+
+    self = [super init];
+    if (self) {
+        self.instances = references;
+        self.predicates = predicates;
+        self.sectionTitles = sectionTitles;
+
+        if (predicates.count) {
+            [self buildSections];
+        } else {
+            self.sections = @[references];
+        }
+    }
+
+    return self;
+}
+
 + (instancetype)instancesTableViewControllerForClassName:(NSString *)className
 {
     const char *classNameCString = [className UTF8String];
@@ -31,20 +64,26 @@
             // Note: objects of certain classes crash when retain is called. It is up to the user to avoid tapping into instance lists for these classes.
             // Ex. OS_dispatch_queue_specific_queue
             // In the future, we could provide some kind of warning for classes that are known to be problematic.
-            [instances addObject:object];
+            if (malloc_size((__bridge const void *)(object)) > 0) {
+                [instances addObject:object];
+            }
         }
     }];
-    FLEXInstancesTableViewController *instancesViewController = [[self alloc] init];
-    instancesViewController.instances = instances;
-    instancesViewController.title = [NSString stringWithFormat:@"%@ (%lu)", className, (unsigned long)[instances count]];
-    return instancesViewController;
+    NSArray<FLEXObjectRef *> *references = [FLEXObjectRef referencingAll:instances];
+    FLEXInstancesTableViewController *viewController = [[self alloc] initWithReferences:references];
+    viewController.title = [NSString stringWithFormat:@"%@ (%lu)", className, (unsigned long)[instances count]];
+    return viewController;
 }
 
 + (instancetype)instancesTableViewControllerForInstancesReferencingObject:(id)object
 {
-    NSMutableArray *instances = [NSMutableArray array];
-    NSMutableArray *fieldNames = [NSMutableArray array];
+    NSMutableArray<FLEXObjectRef *> *instances = [NSMutableArray array];
     [FLEXHeapEnumerator enumerateLiveObjectsUsingBlock:^(__unsafe_unretained id tryObject, __unsafe_unretained Class actualClass) {
+        // Skip Swift objects
+        if ([actualClass isKindOfClass:NSClassFromString(@"SwiftObject")]) {
+            return;
+        }
+        
         // Get all the ivars on the object. Start with the class and and travel up the inheritance chain.
         // Once we find a match, record it and move on to the next object. There's no reason to find multiple matches within the same object.
         Class tryClass = actualClass;
@@ -58,8 +97,7 @@
                     ptrdiff_t offset = ivar_getOffset(ivar);
                     uintptr_t *fieldPointer = (__bridge void *)tryObject + offset;
                     if (*fieldPointer == (uintptr_t)(__bridge void *)object) {
-                        [instances addObject:tryObject];
-                        [fieldNames addObject:@(ivar_getName(ivar))];
+                        [instances addObject:[FLEXObjectRef referencing:tryObject ivar:@(ivar_getName(ivar))]];
                         return;
                     }
                 }
@@ -67,11 +105,85 @@
             tryClass = class_getSuperclass(tryClass);
         }
     }];
-    FLEXInstancesTableViewController *instancesViewController = [[self alloc] init];
-    instancesViewController.instances = instances;
-    instancesViewController.fieldNames = fieldNames;
-    instancesViewController.title = [NSString stringWithFormat:@"Referencing %@ %p", NSStringFromClass(object_getClass(object)), object];
-    return instancesViewController;
+
+    NSArray<NSPredicate *> *predicates = [self defaultPredicates];
+    NSArray<NSString *> *sectionTitles = [self defaultSectionTitles];
+    FLEXInstancesTableViewController *viewController = [[self alloc] initWithReferences:instances
+                                                                             predicates:predicates
+                                                                          sectionTitles:sectionTitles];
+    viewController.title = [NSString stringWithFormat:@"Referencing %@ %p", NSStringFromClass(object_getClass(object)), object];
+    return viewController;
+}
+
++ (NSPredicate *)defaultPredicateForSection:(NSInteger)section
+{
+    // These are the types of references that we typically don't care about.
+    // We want this list of "object-ivar pairs" split into two sections.
+    BOOL(^isObserver)(FLEXObjectRef *, NSDictionary *) = ^BOOL(FLEXObjectRef *ref, NSDictionary *bindings) {
+        NSString *row = ref.reference;
+        return [row isEqualToString:@"__NSObserver object"] ||
+               [row isEqualToString:@"_CFXNotificationObjcObserverRegistration _object"];
+    };
+
+    /// These are common AutoLayout related references we also rarely care about.
+    BOOL(^isConstraintRelated)(FLEXObjectRef *, NSDictionary *) = ^BOOL(FLEXObjectRef *ref, NSDictionary *bindings) {
+        static NSSet *ignored = nil;
+        static dispatch_once_t onceToken;
+        dispatch_once(&onceToken, ^{
+            ignored = [NSSet setWithArray:@[
+                @"NSLayoutConstraint _container",
+                @"NSContentSizeLayoutConstraint _container",
+                @"NSAutoresizingMaskLayoutConstraint _container",
+                @"MASViewConstraint _installedView",
+                @"MASLayoutConstraint _container",
+                @"MASViewAttribute _view"
+            ]];
+        });
+
+        NSString *row = ref.reference;
+        return ([row hasPrefix:@"NSLayout"] && [row hasSuffix:@" _referenceItem"]) ||
+               ([row hasPrefix:@"NSIS"] && [row hasSuffix:@" _delegate"])  ||
+               ([row hasPrefix:@"_NSAutoresizingMask"] && [row hasSuffix:@" _referenceItem"]) ||
+               [ignored containsObject:row];
+    };
+
+    BOOL(^isEssential)(FLEXObjectRef *, NSDictionary *) = ^BOOL(FLEXObjectRef *ref, NSDictionary *bindings) {
+        return !(isObserver(ref, bindings) || isConstraintRelated(ref, bindings));
+    };
+
+    switch (section) {
+        case 0: return [NSPredicate predicateWithBlock:isEssential];
+        case 1: return [NSPredicate predicateWithBlock:isConstraintRelated];
+        case 2: return [NSPredicate predicateWithBlock:isObserver];
+
+        default: return nil;
+    }
+}
+
++ (NSArray<NSPredicate *> *)defaultPredicates {
+    return @[[self defaultPredicateForSection:0],
+             [self defaultPredicateForSection:1],
+             [self defaultPredicateForSection:2]];
+}
+
++ (NSArray<NSString *> *)defaultSectionTitles {
+    return @[@"", @"AutoLayout", @"Trivial"];
+}
+
+- (void)buildSections
+{
+    NSInteger maxSections = self.maxSections;
+    NSMutableArray *sections = [NSMutableArray array];
+    for (NSInteger i = 0; i < maxSections; i++) {
+        NSPredicate *predicate = self.predicates[i];
+        [sections addObject:[self.instances filteredArrayUsingPredicate:predicate]];
+    }
+
+    self.sections = sections;
+}
+
+- (NSInteger)maxSections {
+    return self.predicates.count ?: 1;
 }
 
 
@@ -79,12 +191,12 @@
 
 - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
 {
-    return 1;
+    return self.maxSections;
 }
 
 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
 {
-    return [self.instances count];
+    return self.sections[section].count;
 }
 
 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
@@ -99,26 +211,33 @@
         cell.detailTextLabel.font = cellFont;
         cell.detailTextLabel.textColor = [UIColor grayColor];
     }
-    
-    id instance = [self.instances objectAtIndex:indexPath.row];
-    NSString *title = nil;
-    if ((NSInteger)[self.fieldNames count] > indexPath.row) {
-        title = [NSString stringWithFormat:@"%@ %@", NSStringFromClass(object_getClass(instance)), [self.fieldNames objectAtIndex:indexPath.row]];
-    } else {
-        title = [NSString stringWithFormat:@"%@ %p", NSStringFromClass(object_getClass(instance)), instance];
-    }
-    cell.textLabel.text = title;
-    cell.detailTextLabel.text = [FLEXRuntimeUtility descriptionForIvarOrPropertyValue:instance];
+
+    FLEXObjectRef *row = self.sections[indexPath.section][indexPath.row];
+    cell.textLabel.text = row.reference;
+    cell.detailTextLabel.text = [FLEXRuntimeUtility descriptionForIvarOrPropertyValue:row.object];
     
     return cell;
 }
 
+- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
+{
+    if (self.sectionTitles.count) {
+        // Return nil instead of empty strings
+        NSString *title = self.sectionTitles[section];
+        if (title.length) {
+            return title;
+        }
+    }
+
+    return nil;
+}
+
 
 #pragma mark - Table View Delegate
 
 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
 {
-    id instance = [self.instances objectAtIndex:indexPath.row];
+    id instance = self.instances[indexPath.row].object;
     FLEXObjectExplorerViewController *drillInViewController = [FLEXObjectExplorerFactory explorerViewControllerForObject:instance];
     [self.navigationController pushViewController:drillInViewController animated:YES];
 }

Classes/GlobalStateExplorers/FLEXLibrariesTableViewController.m

@@ -9,14 +9,16 @@
 #import "FLEXLibrariesTableViewController.h"
 #import "FLEXUtility.h"
 #import "FLEXClassesTableViewController.h"
+#import "FLEXClassExplorerViewController.h"
 #import <objc/runtime.h>
 
 @interface FLEXLibrariesTableViewController () <UISearchBarDelegate>
 
-@property (nonatomic, strong) NSArray *imageNames;
-@property (nonatomic, strong) NSArray *filteredImageNames;
+@property (nonatomic, strong) NSArray<NSString *> *imageNames;
+@property (nonatomic, strong) NSArray<NSString *> *filteredImageNames;
 
 @property (nonatomic, strong) UISearchBar *searchBar;
+@property (nonatomic, strong) Class foundClass;
 
 @end
 
@@ -50,7 +52,7 @@
     unsigned int imageNamesCount = 0;
     const char **imageNames = objc_copyImageNames(&imageNamesCount);
     if (imageNames) {
-        NSMutableArray *imageNameStrings = [NSMutableArray array];
+        NSMutableArray<NSString *> *imageNameStrings = [NSMutableArray array];
         NSString *appImageName = [FLEXUtility applicationImageName];
         for (unsigned int i = 0; i < imageNamesCount; i++) {
             const char *imageName = imageNames[i];
@@ -63,9 +65,9 @@
         
         // Sort alphabetically
         self.imageNames = [imageNameStrings sortedArrayWithOptions:0 usingComparator:^NSComparisonResult(NSString *name1, NSString *name2) {
-                NSString *shortName1 = [self shortNameForImageName:name1];
-                NSString *shortName2 = [self shortNameForImageName:name2];
-                return [shortName1 caseInsensitiveCompare:shortName2];
+            NSString *shortName1 = [self shortNameForImageName:name1];
+            NSString *shortName2 = [self shortNameForImageName:name2];
+            return [shortName1 caseInsensitiveCompare:shortName2];
         }];
         
         free(imageNames);
@@ -74,16 +76,14 @@
 
 - (NSString *)shortNameForImageName:(NSString *)imageName
 {
-    NSString *shortName = nil;
-    NSArray *components = [imageName componentsSeparatedByString:@"/"];
-    NSUInteger componentsCount = [components count];
-    if (componentsCount >= 2) {
-        shortName = [NSString stringWithFormat:@"%@/%@", components[componentsCount - 2], components[componentsCount - 1]];
+    NSArray<NSString *> *components = [imageName componentsSeparatedByString:@"/"];
+    if (components.count >= 2) {
+        return [NSString stringWithFormat:@"%@/%@", components[components.count - 2], components[components.count - 1]];
     }
-    return shortName;
+    return imageName.lastPathComponent;
 }
 
-- (void)setImageNames:(NSArray *)imageNames
+- (void)setImageNames:(NSArray<NSString *> *)imageNames
 {
     if (![_imageNames isEqual:imageNames]) {
         _imageNames = imageNames;
@@ -97,7 +97,7 @@
 - (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
 {
     if ([searchText length] > 0) {
-        NSPredicate *searchPreidcate = [NSPredicate predicateWithBlock:^BOOL(id evaluatedObject, NSDictionary *bindings) {
+        NSPredicate *searchPreidcate = [NSPredicate predicateWithBlock:^BOOL(NSString *evaluatedObject, NSDictionary<NSString *, id> *bindings) {
             BOOL matches = NO;
             NSString *shortName = [self shortNameForImageName:evaluatedObject];
             if ([shortName rangeOfString:searchText options:NSCaseInsensitiveSearch].length > 0) {
@@ -109,6 +109,8 @@
     } else {
         self.filteredImageNames = self.imageNames;
     }
+    
+    self.foundClass = NSClassFromString(searchText);
     [self.tableView reloadData];
 }
 
@@ -127,22 +129,32 @@
 
 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
 {
-    return [self.filteredImageNames count];
+    return self.filteredImageNames.count + (self.foundClass ? 1 : 0);
 }
 
 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
 {
-    static NSString *CellIdentifier = @"Cell";
-    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
+    static NSString *cellIdentifier = @"Cell";
+    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
     if (!cell) {
-        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
+        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
         cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
         cell.textLabel.font = [FLEXUtility defaultTableViewCellLabelFont];
     }
     
-    NSString *fullImageName = self.filteredImageNames[indexPath.row];
-    cell.textLabel.text = [self shortNameForImageName:fullImageName];
+    NSString *executablePath;
+    if (self.foundClass) {
+        if (indexPath.row == 0) {
+            cell.textLabel.text = [NSString stringWithFormat:@"Class \"%@\"", self.searchBar.text];
+            return cell;
+        } else {
+            executablePath = self.filteredImageNames[indexPath.row-1];
+        }
+    } else {
+        executablePath = self.filteredImageNames[indexPath.row];
+    }
     
+    cell.textLabel.text = [self shortNameForImageName:executablePath];
     return cell;
 }
 
@@ -151,9 +163,15 @@
 
 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
 {
-    FLEXClassesTableViewController *classesViewController = [[FLEXClassesTableViewController alloc] init];
-    classesViewController.binaryImageName = self.filteredImageNames[indexPath.row];
-    [self.navigationController pushViewController:classesViewController animated:YES];
+    if (indexPath.row == 0 && self.foundClass) {
+        FLEXClassExplorerViewController *objectExplorer = [FLEXClassExplorerViewController new];
+        objectExplorer.object = self.foundClass;
+        [self.navigationController pushViewController:objectExplorer animated:YES];
+    } else {
+        FLEXClassesTableViewController *classesViewController = [[FLEXClassesTableViewController alloc] init];
+        classesViewController.binaryImageName = self.filteredImageNames[self.foundClass ? indexPath.row-1 : indexPath.row];
+        [self.navigationController pushViewController:classesViewController animated:YES];
+    }
 }
 
 @end

Classes/GlobalStateExplorers/FLEXLiveObjectsTableViewController.m

@@ -14,12 +14,14 @@
 
 static const NSInteger kFLEXLiveObjectsSortAlphabeticallyIndex = 0;
 static const NSInteger kFLEXLiveObjectsSortByCountIndex = 1;
+static const NSInteger kFLEXLiveObjectsSortBySizeIndex = 2;
 
 @interface FLEXLiveObjectsTableViewController () <UISearchBarDelegate>
 
-@property (nonatomic, strong) NSDictionary *instanceCountsForClassNames;
-@property (nonatomic, readonly) NSArray *allClassNames;
-@property (nonatomic, strong) NSArray *filteredClassNames;
+@property (nonatomic, strong) NSDictionary<NSString *, NSNumber *> *instanceCountsForClassNames;
+@property (nonatomic, strong) NSDictionary<NSString *, NSNumber *> *instanceSizesForClassNames;
+@property (nonatomic, readonly) NSArray<NSString *> *allClassNames;
+@property (nonatomic, strong) NSArray<NSString *> *filteredClassNames;
 @property (nonatomic, strong) UISearchBar *searchBar;
 
 @end
@@ -34,7 +36,7 @@ static const NSInteger kFLEXLiveObjectsSortByCountIndex = 1;
     self.searchBar.placeholder = [FLEXUtility searchBarPlaceholderText];
     self.searchBar.delegate = self;
     self.searchBar.showsScopeBar = YES;
-    self.searchBar.scopeButtonTitles = @[@"Sort Alphabetically", @"Sort by Count"];
+    self.searchBar.scopeButtonTitles = @[@"Sort Alphabetically", @"Sort by Count", @"Sort by Size"];
     [self.searchBar sizeToFit];
     self.tableView.tableHeaderView = self.searchBar;
     
@@ -44,7 +46,7 @@ static const NSInteger kFLEXLiveObjectsSortByCountIndex = 1;
     [self reloadTableData];
 }
 
-- (NSArray *)allClassNames
+- (NSArray<NSString *> *)allClassNames
 {
     return [self.instanceCountsForClassNames allKeys];
 }
@@ -72,18 +74,21 @@ static const NSInteger kFLEXLiveObjectsSortByCountIndex = 1;
     }];
     
     // Convert our CF primitive dictionary into a nicer mapping of class name strings to counts that we will use as the table's model.
-    NSMutableDictionary *mutableCountsForClassNames = [NSMutableDictionary dictionary];
+    NSMutableDictionary<NSString *, NSNumber *> *mutableCountsForClassNames = [NSMutableDictionary dictionary];
+    NSMutableDictionary<NSString *, NSNumber *> *mutableSizesForClassNames = [NSMutableDictionary dictionary];
     for (unsigned int i = 0; i < classCount; i++) {
         Class class = classes[i];
         NSUInteger instanceCount = (NSUInteger)CFDictionaryGetValue(mutableCountsForClasses, (__bridge const void *)(class));
+        NSString *className = @(class_getName(class));
         if (instanceCount > 0) {
-            NSString *className = @(class_getName(class));
             [mutableCountsForClassNames setObject:@(instanceCount) forKey:className];
         }
+        [mutableSizesForClassNames setObject:@(class_getInstanceSize(class)) forKey:className];
     }
     free(classes);
     
     self.instanceCountsForClassNames = mutableCountsForClassNames;
+    self.instanceSizesForClassNames = mutableSizesForClassNames;
     
     [self updateTableDataForSearchFilter];
 }
@@ -99,19 +104,27 @@ static const NSInteger kFLEXLiveObjectsSortByCountIndex = 1;
     NSString *title = @"Live Objects";
     
     NSUInteger totalCount = 0;
+    NSUInteger totalSize = 0;
     for (NSString *className in self.allClassNames) {
-        totalCount += [[self.instanceCountsForClassNames objectForKey:className] unsignedIntegerValue];
+        NSUInteger count = [self.instanceCountsForClassNames[className] unsignedIntegerValue];
+        totalCount += count;
+        totalSize += count * [self.instanceSizesForClassNames[className] unsignedIntegerValue];
     }
     NSUInteger filteredCount = 0;
+    NSUInteger filteredSize = 0;
     for (NSString *className in self.filteredClassNames) {
-        filteredCount += [[self.instanceCountsForClassNames objectForKey:className] unsignedIntegerValue];
+        NSUInteger count = [self.instanceCountsForClassNames[className] unsignedIntegerValue];
+        filteredCount += count;
+        filteredSize += count * [self.instanceSizesForClassNames[className] unsignedIntegerValue];
     }
     
     if (filteredCount == totalCount) {
         // Unfiltered
-        title = [title stringByAppendingFormat:@" (%lu)", (unsigned long)totalCount];
+        title = [title stringByAppendingFormat:@" (%lu, %@)", (unsigned long)totalCount,
+              [NSByteCountFormatter stringFromByteCount:totalSize countStyle:NSByteCountFormatterCountStyleFile]];
     } else {
-        title = [title stringByAppendingFormat:@" (filtered, %lu)", (unsigned long)filteredCount];
+        title = [title stringByAppendingFormat:@" (filtered, %lu, %@)", (unsigned long)filteredCount,
+              [NSByteCountFormatter stringFromByteCount:filteredSize countStyle:NSByteCountFormatterCountStyleFile]];
     }
     
     self.title = title;
@@ -154,11 +167,20 @@ static const NSInteger kFLEXLiveObjectsSortByCountIndex = 1;
         self.filteredClassNames = [self.filteredClassNames sortedArrayUsingSelector:@selector(caseInsensitiveCompare:)];
     } else if (self.searchBar.selectedScopeButtonIndex == kFLEXLiveObjectsSortByCountIndex) {
         self.filteredClassNames = [self.filteredClassNames sortedArrayUsingComparator:^NSComparisonResult(NSString *className1, NSString *className2) {
-            NSNumber *count1 = [self.instanceCountsForClassNames objectForKey:className1];
-            NSNumber *count2 = [self.instanceCountsForClassNames objectForKey:className2];
+            NSNumber *count1 = self.instanceCountsForClassNames[className1];
+            NSNumber *count2 = self.instanceCountsForClassNames[className2];
             // Reversed for descending counts.
             return [count2 compare:count1];
         }];
+    } else if (self.searchBar.selectedScopeButtonIndex == kFLEXLiveObjectsSortBySizeIndex) {
+        self.filteredClassNames = [self.filteredClassNames sortedArrayUsingComparator:^NSComparisonResult(NSString *className1, NSString *className2) {
+            NSNumber *count1 = self.instanceCountsForClassNames[className1];
+            NSNumber *count2 = self.instanceCountsForClassNames[className2];
+            NSNumber *size1 = self.instanceSizesForClassNames[className1];
+            NSNumber *size2 = self.instanceSizesForClassNames[className2];
+            // Reversed for descending sizes.
+            return [@(count2.integerValue * size2.integerValue) compare:@(count1.integerValue * size1.integerValue)];
+        }];
     }
     
     [self updateTitle];
@@ -189,8 +211,11 @@ static const NSInteger kFLEXLiveObjectsSortByCountIndex = 1;
     }
     
     NSString *className = self.filteredClassNames[indexPath.row];
-    NSNumber *count = [self.instanceCountsForClassNames objectForKey:className];
-    cell.textLabel.text = [NSString stringWithFormat:@"%@ (%ld)", className, (long)[count integerValue]];
+    NSNumber *count = self.instanceCountsForClassNames[className];
+    NSNumber *size = self.instanceSizesForClassNames[className];
+    unsigned long totalSize = count.unsignedIntegerValue * size.unsignedIntegerValue;
+    cell.textLabel.text = [NSString stringWithFormat:@"%@ (%ld, %@)", className, (long)[count integerValue],
+        [NSByteCountFormatter stringFromByteCount:totalSize countStyle:NSByteCountFormatterCountStyleFile]];
     
     return cell;
 }
@@ -200,7 +225,7 @@ static const NSInteger kFLEXLiveObjectsSortByCountIndex = 1;
 
 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
 {
-    NSString *className = [self.filteredClassNames objectAtIndex:indexPath.row];
+    NSString *className = self.filteredClassNames[indexPath.row];
     FLEXInstancesTableViewController *instancesViewController = [FLEXInstancesTableViewController instancesTableViewControllerForClassName:className];
     [self.navigationController pushViewController:instancesViewController animated:YES];
 }

Classes/GlobalStateExplorers/FLEXObjectRef.h

@@ -0,0 +1,22 @@
+//
+//  FLEXObjectRef.h
+//  FLEX
+//
+//  Created by Tanner Bennett on 7/24/18.
+//  Copyright (c) 2018 Flipboard. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+@interface FLEXObjectRef : NSObject
+
++ (instancetype)referencing:(id)object;
++ (instancetype)referencing:(id)object ivar:(NSString *)ivarName;
+
++ (NSArray<FLEXObjectRef *> *)referencingAll:(NSArray *)objects;
+
+/// For example, "NSString 0x1d4085d0" or "NSLayoutConstraint _object"
+@property (nonatomic, readonly) NSString *reference;
+@property (nonatomic, readonly) id object;
+
+@end

Classes/GlobalStateExplorers/FLEXObjectRef.m

@@ -0,0 +1,47 @@
+//
+//  FLEXObjectRef.m
+//  FLEX
+//
+//  Created by Tanner Bennett on 7/24/18.
+//  Copyright (c) 2018 Flipboard. All rights reserved.
+//
+
+#import "FLEXObjectRef.h"
+#import <objc/runtime.h>
+
+@implementation FLEXObjectRef
+
++ (instancetype)referencing:(id)object {
+    return [[self alloc] initWithObject:object ivarName:nil];
+}
+
++ (instancetype)referencing:(id)object ivar:(NSString *)ivarName {
+    return [[self alloc] initWithObject:object ivarName:ivarName];
+}
+
++ (NSArray<FLEXObjectRef *> *)referencingAll:(NSArray *)objects {
+    NSMutableArray<FLEXObjectRef *> *refs = [NSMutableArray array];
+    for (id obj in objects) {
+        [refs addObject:[self referencing:obj]];
+    }
+
+    return refs;
+}
+
+- (id)initWithObject:(id)object ivarName:(NSString *)ivar {
+    self = [super init];
+    if (self) {
+        _object = object;
+
+        NSString *class = NSStringFromClass(object_getClass(object));
+        if (ivar) {
+            _reference = [NSString stringWithFormat:@"%@ %@", class, ivar];
+        } else {
+            _reference = [NSString stringWithFormat:@"%@ %p", class, object];
+        }
+    }
+
+    return self;
+}
+
+@end

Classes/GlobalStateExplorers/FLEXWebViewController.m

@@ -102,23 +102,23 @@
 + (BOOL)supportsPathExtension:(NSString *)extension
 {
     BOOL supported = NO;
-    NSSet *supportedExtensions = [self webViewSupportedPathExtensions];
+    NSSet<NSString *> *supportedExtensions = [self webViewSupportedPathExtensions];
     if ([supportedExtensions containsObject:[extension lowercaseString]]) {
         supported = YES;
     }
     return supported;
 }
 
-+ (NSSet *)webViewSupportedPathExtensions
++ (NSSet<NSString *> *)webViewSupportedPathExtensions
 {
-    static NSSet *pathExtenstions = nil;
+    static NSSet<NSString *> *pathExtenstions = nil;
     static dispatch_once_t onceToken;
     dispatch_once(&onceToken, ^{
         // Note that this is not exhaustive, but all these extensions should work well in the web view.
         // See https://developer.apple.com/library/ios/documentation/AppleApplications/Reference/SafariWebContent/CreatingContentforSafarioniPhone/CreatingContentforSafarioniPhone.html#//apple_ref/doc/uid/TP40006482-SW7
-        pathExtenstions = [NSSet setWithArray:@[@"jpg", @"jpeg", @"png", @"gif", @"pdf", @"svg", @"tiff", @"3gp", @"3gpp", @"3g2",
-                                                @"3gp2", @"aiff", @"aif", @"aifc", @"cdda", @"amr", @"mp3", @"swa", @"mp4", @"mpeg",
-                                                @"mpg", @"mp3", @"wav", @"bwf", @"m4a", @"m4b", @"m4p", @"mov", @"qt", @"mqv", @"m4v"]];
+        pathExtenstions = [NSSet<NSString *> setWithArray:@[@"jpg", @"jpeg", @"png", @"gif", @"pdf", @"svg", @"tiff", @"3gp", @"3gpp", @"3g2",
+                                                            @"3gp2", @"aiff", @"aif", @"aifc", @"cdda", @"amr", @"mp3", @"swa", @"mp4", @"mpeg",
+                                                            @"mpg", @"mp3", @"wav", @"bwf", @"m4a", @"m4b", @"m4p", @"mov", @"qt", @"mqv", @"m4v"]];
         
     });
     return pathExtenstions;

Classes/GlobalStateExplorers/SystemLog/ActivityStreamAPI.h

@@ -0,0 +1,205 @@
+//
+// Taken from https://github.com/llvm-mirror/lldb/blob/master/tools/debugserver/source/MacOSX/DarwinLog/ActivityStreamSPI.h
+// by Tanner Bennett on 03/03/2019 with minimal modifications.
+//
+
+//===-- ActivityStreamAPI.h -------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef ActivityStreamSPI_h
+#define ActivityStreamSPI_h
+
+#include <sys/time.h>
+// #include <xpc/xpc.h>
+
+/* By default, XPC objects are declared as Objective-C types when building with
+ * an Objective-C compiler. This allows them to participate in ARC, in RR
+ * management by the Blocks runtime and in leaks checking by the static
+ * analyzer, and enables them to be added to Cocoa collections.
+ *
+ * See <os/object.h> for details.
+ */
+#if OS_OBJECT_USE_OBJC
+OS_OBJECT_DECL(xpc_object);
+#else
+typedef void * xpc_object_t;
+#endif 
+
+#define OS_ACTIVITY_MAX_CALLSTACK 32
+
+// Enums
+
+typedef NS_ENUM(uint32_t, os_activity_stream_flag_t) {
+    OS_ACTIVITY_STREAM_PROCESS_ONLY = 0x00000001,
+    OS_ACTIVITY_STREAM_SKIP_DECODE = 0x00000002,
+    OS_ACTIVITY_STREAM_PAYLOAD = 0x00000004,
+    OS_ACTIVITY_STREAM_HISTORICAL = 0x00000008,
+    OS_ACTIVITY_STREAM_CALLSTACK = 0x00000010,
+    OS_ACTIVITY_STREAM_DEBUG = 0x00000020,
+    OS_ACTIVITY_STREAM_BUFFERED = 0x00000040,
+    OS_ACTIVITY_STREAM_NO_SENSITIVE = 0x00000080,
+    OS_ACTIVITY_STREAM_INFO = 0x00000100,
+    OS_ACTIVITY_STREAM_PROMISCUOUS = 0x00000200,
+    OS_ACTIVITY_STREAM_PRECISE_TIMESTAMPS = 0x00000200
+};
+
+typedef NS_ENUM(uint32_t, os_activity_stream_type_t) {
+    OS_ACTIVITY_STREAM_TYPE_ACTIVITY_CREATE = 0x0201,
+    OS_ACTIVITY_STREAM_TYPE_ACTIVITY_TRANSITION = 0x0202,
+    OS_ACTIVITY_STREAM_TYPE_ACTIVITY_USERACTION = 0x0203,
+    
+    OS_ACTIVITY_STREAM_TYPE_TRACE_MESSAGE = 0x0300,
+    
+    OS_ACTIVITY_STREAM_TYPE_LOG_MESSAGE = 0x0400,
+    OS_ACTIVITY_STREAM_TYPE_LEGACY_LOG_MESSAGE = 0x0480,
+    
+    OS_ACTIVITY_STREAM_TYPE_SIGNPOST_BEGIN = 0x0601,
+    OS_ACTIVITY_STREAM_TYPE_SIGNPOST_END = 0x0602,
+    OS_ACTIVITY_STREAM_TYPE_SIGNPOST_EVENT = 0x0603,
+    
+    OS_ACTIVITY_STREAM_TYPE_STATEDUMP_EVENT = 0x0A00,
+};
+
+typedef NS_ENUM(uint32_t, os_activity_stream_event_t) {
+    OS_ACTIVITY_STREAM_EVENT_STARTED = 1,
+    OS_ACTIVITY_STREAM_EVENT_STOPPED = 2,
+    OS_ACTIVITY_STREAM_EVENT_FAILED = 3,
+    OS_ACTIVITY_STREAM_EVENT_CHUNK_STARTED = 4,
+    OS_ACTIVITY_STREAM_EVENT_CHUNK_FINISHED = 5,
+};
+
+// Types
+
+typedef uint64_t os_activity_id_t;
+typedef struct os_activity_stream_s *os_activity_stream_t;
+typedef struct os_activity_stream_entry_s *os_activity_stream_entry_t;
+
+#define OS_ACTIVITY_STREAM_COMMON()                                            \
+uint64_t trace_id;                                                           \
+uint64_t timestamp;                                                          \
+uint64_t thread;                                                             \
+const uint8_t *image_uuid;                                                   \
+const char *image_path;                                                      \
+struct timeval tv_gmt;                                                       \
+struct timezone tz;                                                          \
+uint32_t offset
+
+typedef struct os_activity_stream_common_s {
+    OS_ACTIVITY_STREAM_COMMON();
+} * os_activity_stream_common_t;
+
+struct os_activity_create_s {
+    OS_ACTIVITY_STREAM_COMMON();
+    const char *name;
+    os_activity_id_t creator_aid;
+    uint64_t unique_pid;
+};
+
+struct os_activity_transition_s {
+    OS_ACTIVITY_STREAM_COMMON();
+    os_activity_id_t transition_id;
+};
+
+typedef struct os_log_message_s {
+    OS_ACTIVITY_STREAM_COMMON();
+    const char *format;
+    const uint8_t *buffer;
+    size_t buffer_sz;
+    const uint8_t *privdata;
+    size_t privdata_sz;
+    const char *subsystem;
+    const char *category;
+    uint32_t oversize_id;
+    uint8_t ttl;
+    bool persisted;
+} * os_log_message_t;
+
+typedef struct os_trace_message_v2_s {
+    OS_ACTIVITY_STREAM_COMMON();
+    const char *format;
+    const void *buffer;
+    size_t bufferLen;
+    xpc_object_t __unsafe_unretained payload;
+} * os_trace_message_v2_t;
+
+typedef struct os_activity_useraction_s {
+    OS_ACTIVITY_STREAM_COMMON();
+    const char *action;
+    bool persisted;
+} * os_activity_useraction_t;
+
+typedef struct os_signpost_s {
+    OS_ACTIVITY_STREAM_COMMON();
+    const char *format;
+    const uint8_t *buffer;
+    size_t buffer_sz;
+    const uint8_t *privdata;
+    size_t privdata_sz;
+    const char *subsystem;
+    const char *category;
+    uint64_t duration_nsec;
+    uint32_t callstack_depth;
+    uint64_t callstack[OS_ACTIVITY_MAX_CALLSTACK];
+} * os_signpost_t;
+
+typedef struct os_activity_statedump_s {
+    OS_ACTIVITY_STREAM_COMMON();
+    char *message;
+    size_t message_size;
+    char image_path_buffer[PATH_MAX];
+} * os_activity_statedump_t;
+
+struct os_activity_stream_entry_s {
+    os_activity_stream_type_t type;
+    
+    // information about the process streaming the data
+    pid_t pid;
+    uint64_t proc_id;
+    const uint8_t *proc_imageuuid;
+    const char *proc_imagepath;
+    
+    // the activity associated with this streamed event
+    os_activity_id_t activity_id;
+    os_activity_id_t parent_id;
+    
+    union {
+        struct os_activity_stream_common_s common;
+        struct os_activity_create_s activity_create;
+        struct os_activity_transition_s activity_transition;
+        struct os_log_message_s log_message;
+        struct os_trace_message_v2_s trace_message;
+        struct os_activity_useraction_s useraction;
+        struct os_signpost_s signpost;
+        struct os_activity_statedump_s statedump;
+    };
+};
+
+// Blocks
+
+typedef bool (^os_activity_stream_block_t)(os_activity_stream_entry_t entry,
+                                           int error);
+
+typedef void (^os_activity_stream_event_block_t)(
+                                                 os_activity_stream_t stream, os_activity_stream_event_t event);
+
+// SPI entry point prototypes
+
+typedef os_activity_stream_t (*os_activity_stream_for_pid_t)(
+                                                             pid_t pid, os_activity_stream_flag_t flags,
+                                                             os_activity_stream_block_t stream_block);
+
+typedef void (*os_activity_stream_resume_t)(os_activity_stream_t stream);
+
+typedef void (*os_activity_stream_cancel_t)(os_activity_stream_t stream);
+
+typedef char *(*os_log_copy_formatted_message_t)(os_log_message_t log_message);
+
+typedef void (*os_activity_stream_set_event_handler_t)(
+                                                       os_activity_stream_t stream, os_activity_stream_event_block_t block);
+
+#endif /* ActivityStreamSPI_h */

Classes/GlobalStateExplorers/SystemLog/FLEXASLLogController.h

@@ -0,0 +1,18 @@
+//
+//  FLEXASLLogController.h
+//  FLEX
+//
+//  Created by Tanner on 3/14/19.
+//  Copyright © 2019 Flipboard. All rights reserved.
+//
+
+#import "FLEXLogController.h"
+
+@interface FLEXASLLogController : NSObject <FLEXLogController>
+
+/// Guaranteed to call back on the main thread.
++ (instancetype)withUpdateHandler:(void(^)(NSArray<FLEXSystemLogMessage *> *newMessages))newMessagesHandler;
+
+- (BOOL)startMonitoring;
+
+@end

Classes/GlobalStateExplorers/SystemLog/FLEXASLLogController.m

@@ -0,0 +1,154 @@
+//
+//  FLEXASLLogController.m
+//  FLEX
+//
+//  Created by Tanner on 3/14/19.
+//  Copyright © 2019 Flipboard. All rights reserved.
+//
+
+#import "FLEXASLLogController.h"
+#import <asl.h>
+
+// Querrying the ASL is much slower in the simulator. We need a longer polling interval to keep things repsonsive.
+#if TARGET_IPHONE_SIMULATOR
+    #define updateInterval 5.0
+#else
+    #define updateInterval 1.0
+#endif
+
+@interface FLEXASLLogController ()
+
+@property (nonatomic, readonly) void (^updateHandler)(NSArray<FLEXSystemLogMessage *> *);
+
+@property (nonatomic, strong) NSTimer *logUpdateTimer;
+@property (nonatomic, readonly) NSMutableIndexSet *logMessageIdentifiers;
+
+// ASL stuff
+
+@property (nonatomic) NSUInteger heapSize;
+@property (nonatomic) dispatch_queue_t logQueue;
+@property (nonatomic) dispatch_io_t io;
+@property (nonatomic) NSString *remaining;
+@property (nonatomic) int stderror;
+@property (nonatomic) NSString *lastTimestamp;
+
+@end
+
+@implementation FLEXASLLogController
+
++ (instancetype)withUpdateHandler:(void(^)(NSArray<FLEXSystemLogMessage *> *newMessages))newMessagesHandler
+{
+    return [[self alloc] initWithUpdateHandler:newMessagesHandler];
+}
+
+- (id)initWithUpdateHandler:(void(^)(NSArray<FLEXSystemLogMessage *> *newMessages))newMessagesHandler
+{
+    NSParameterAssert(newMessagesHandler);
+
+    self = [super init];
+    if (self) {
+        _updateHandler = newMessagesHandler;
+        _logMessageIdentifiers = [NSMutableIndexSet indexSet];
+        self.logUpdateTimer = [NSTimer scheduledTimerWithTimeInterval:updateInterval
+                                                               target:self
+                                                             selector:@selector(updateLogMessages)
+                                                             userInfo:nil
+                                                              repeats:YES];
+    }
+
+    return self;
+}
+
+- (void)dealloc
+{
+    [self.logUpdateTimer invalidate];
+}
+
+- (BOOL)startMonitoring {
+    [self.logUpdateTimer fire];
+    return YES;
+}
+
+- (void)updateLogMessages
+{
+    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
+        NSArray<FLEXSystemLogMessage *> *newMessages;
+        @synchronized (self) {
+            newMessages = [self newLogMessagesForCurrentProcess];
+            if (!newMessages.count) {
+                return;
+            }
+
+            for (FLEXSystemLogMessage *message in newMessages) {
+                [self.logMessageIdentifiers addIndex:(NSUInteger)message.messageID];
+            }
+
+            self.lastTimestamp = @(asl_get(newMessages.lastObject.aslMessage, ASL_KEY_TIME));
+        }
+
+        dispatch_async(dispatch_get_main_queue(), ^{
+            self.updateHandler(newMessages);
+        });
+    });
+}
+
+#pragma mark - Log Message Fetching
+
+- (NSArray<FLEXSystemLogMessage *> *)newLogMessagesForCurrentProcess
+{
+    if (!self.logMessageIdentifiers.count) {
+        return [self allLogMessagesForCurrentProcess];
+    }
+
+    aslresponse response = [self ASLMessageListForCurrentProcess];
+    aslmsg aslMessage = NULL;
+
+    NSMutableArray<FLEXSystemLogMessage *> *newMessages = [NSMutableArray array];
+
+    while ((aslMessage = asl_next(response))) {
+        NSUInteger messageID = (NSUInteger)atoll(asl_get(aslMessage, ASL_KEY_MSG_ID));
+        if (![self.logMessageIdentifiers containsIndex:messageID]) {
+            [newMessages addObject:[FLEXSystemLogMessage logMessageFromASLMessage:aslMessage]];
+        }
+    }
+
+    asl_release(response);
+    return newMessages;
+}
+
+- (aslresponse)ASLMessageListForCurrentProcess
+{
+    static NSString *pidString = nil;
+    if (!pidString) {
+        pidString = @([[NSProcessInfo processInfo] processIdentifier]).stringValue;
+    }
+
+    // Create system log query object.
+    asl_object_t query = asl_new(ASL_TYPE_QUERY);
+
+    // Filter for messages from the current process.
+    // Note that this appears to happen by default on device, but is required in the simulator.
+    asl_set_query(query, ASL_KEY_PID, pidString.UTF8String, ASL_QUERY_OP_EQUAL);
+    // Filter for messages after the last retreived message.
+    if (self.lastTimestamp) {
+        asl_set_query(query, ASL_KEY_TIME, self.lastTimestamp.UTF8String, ASL_QUERY_OP_GREATER);
+    }
+
+    return asl_search(NULL, query);
+}
+
+- (NSArray<FLEXSystemLogMessage *> *)allLogMessagesForCurrentProcess
+{
+    aslresponse response = [self ASLMessageListForCurrentProcess];
+    aslmsg aslMessage = NULL;
+
+    NSMutableArray<FLEXSystemLogMessage *> *logMessages = [NSMutableArray array];
+    while ((aslMessage = asl_next(response))) {
+        [logMessages addObject:[FLEXSystemLogMessage logMessageFromASLMessage:aslMessage]];
+    }
+    asl_release(response);
+
+    return logMessages;
+}
+
+@end

Classes/GlobalStateExplorers/SystemLog/FLEXLogController.h

@@ -0,0 +1,19 @@
+//
+//  FLEXLogController.h
+//  FLEX
+//
+//  Created by Tanner on 3/17/19.
+//  Copyright © 2019 Flipboard. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import "FLEXSystemLogMessage.h"
+
+@protocol FLEXLogController <NSObject>
+
+/// Guaranteed to call back on the main thread.
++ (instancetype)withUpdateHandler:(void(^)(NSArray<FLEXSystemLogMessage *> *newMessages))newMessagesHandler;
+
+- (BOOL)startMonitoring;
+
+@end

Classes/GlobalStateExplorers/SystemLog/FLEXOSLogController.h

@@ -0,0 +1,29 @@
+//
+//  FLEXOSLogController.h
+//  FLEX
+//
+//  Created by Tanner on 12/19/18.
+//  Copyright © 2018 Flipboard. All rights reserved.
+//
+
+#import "FLEXLogController.h"
+
+#define FLEXOSLogAvailable() ([NSProcessInfo processInfo].operatingSystemVersion.majorVersion >= 10)
+
+extern NSString * const kFLEXiOSPersistentOSLogKey;
+
+/// The log controller used for iOS 10 and up.
+@interface FLEXOSLogController : NSObject <FLEXLogController>
+
++ (instancetype)withUpdateHandler:(void(^)(NSArray<FLEXSystemLogMessage *> *newMessages))newMessagesHandler;
+
+- (BOOL)startMonitoring;
+
+/// Whether log messages are to be recorded and kept in-memory in the background.
+/// You do not need to initialize this value, only change it.
+@property (nonatomic) BOOL persistent;
+/// Used mostly internally, but also used by the log VC to persist messages
+/// that were created prior to enabling persistence.
+@property (nonatomic) NSMutableArray<FLEXSystemLogMessage *> *messages;
+
+@end

Classes/GlobalStateExplorers/SystemLog/FLEXOSLogController.m

@@ -0,0 +1,218 @@
+//
+//  FLEXOSLogController.m
+//  FLEX
+//
+//  Created by Tanner on 12/19/18.
+//  Copyright © 2018 Flipboard. All rights reserved.
+//
+
+#import "FLEXOSLogController.h"
+#include <dlfcn.h>
+#include "ActivityStreamAPI.h"
+
+NSString * const kFLEXiOSPersistentOSLogKey = @"com.flex.enablePersistentOSLogLogging";
+
+static os_activity_stream_for_pid_t OSActivityStreamForPID;
+static os_activity_stream_resume_t OSActivityStreamResume;
+static os_activity_stream_cancel_t OSActivityStreamCancel;
+static os_log_copy_formatted_message_t OSLogCopyFormattedMessage;
+static os_activity_stream_set_event_handler_t OSActivityStreamSetEventHandler;
+static int (*proc_name)(int, char *, unsigned int);
+static int (*proc_listpids)(uint32_t, uint32_t, void*, int);
+static uint8_t (*OSLogGetType)(void *);
+
+@interface FLEXOSLogController ()
+
++ (FLEXOSLogController *)sharedLogController;
+
+@property (nonatomic) void (^updateHandler)(NSArray<FLEXSystemLogMessage *> *);
+
+@property (nonatomic) BOOL canPrint;
+@property (nonatomic) int filterPid;
+@property (nonatomic) BOOL levelInfo;
+@property (nonatomic) BOOL subsystemInfo;
+
+@property (nonatomic) os_activity_stream_t stream;
+
+@end
+
+@implementation FLEXOSLogController
+
++ (void)load
+{
+    // Persist logs when the app launches on iOS 10 if we have persitent logs turned on
+    if (FLEXOSLogAvailable()) {
+        BOOL persistent = [[NSUserDefaults standardUserDefaults] boolForKey:kFLEXiOSPersistentOSLogKey];
+        if (persistent) {
+            [self sharedLogController].persistent = YES;
+            [[self sharedLogController] startMonitoring];
+        }
+    }
+}
+
++ (instancetype)sharedLogController {
+    static FLEXOSLogController *shared = nil;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        shared = [self new];
+    });
+    
+    return shared;
+}
+
++ (instancetype)withUpdateHandler:(void(^)(NSArray<FLEXSystemLogMessage *> *newMessages))newMessagesHandler
+{
+    FLEXOSLogController *shared = [self sharedLogController];
+    shared.updateHandler = newMessagesHandler;
+    return shared;
+}
+
+- (id)init
+{
+    NSAssert(FLEXOSLogAvailable(), @"os_log is only available on iOS 10 and up");
+
+    self = [super init];
+    if (self) {
+        _filterPid = [NSProcessInfo processInfo].processIdentifier;
+        _levelInfo = NO;
+        _subsystemInfo = NO;
+    }
+    
+    return self;
+}
+
+- (void)dealloc {
+    OSActivityStreamCancel(self.stream);
+    _stream = nil;
+}
+
+- (void)setPersistent:(BOOL)persistent {
+    if (_persistent == persistent) return;
+    
+    _persistent = persistent;
+    self.messages = persistent ? [NSMutableArray array] : nil;
+}
+
+- (BOOL)startMonitoring {
+    if (![self lookupSPICalls]) {
+        // >= iOS 10 is required
+        return NO;
+    }
+    
+    // Are we already monitoring?
+    if (self.stream) {
+        // Should we send out the "persisted" messages?
+        if (self.updateHandler && self.messages.count) {
+            dispatch_async(dispatch_get_main_queue(), ^{
+                self.updateHandler(self.messages);
+            });
+        }
+        
+        return YES;
+    }
+
+    // Stream entry handler
+    os_activity_stream_block_t block = ^bool(os_activity_stream_entry_t entry, int error) {
+        return [self handleStreamEntry:entry error:error];
+    };
+
+    // Controls which types of messages we see
+    // 'Historical' appears to just show NSLog stuff
+    uint32_t activity_stream_flags = OS_ACTIVITY_STREAM_HISTORICAL;
+    activity_stream_flags |= OS_ACTIVITY_STREAM_PROCESS_ONLY;
+//    activity_stream_flags |= OS_ACTIVITY_STREAM_PROCESS_ONLY;
+
+    self.stream = OSActivityStreamForPID(self.filterPid, activity_stream_flags, block);
+
+    // Specify the stream-related event handler
+    OSActivityStreamSetEventHandler(self.stream, [self streamEventHandlerBlock]);
+    // Start the stream
+    OSActivityStreamResume(self.stream);
+
+    return YES;
+}
+
+- (BOOL)lookupSPICalls {
+    static BOOL hasSPI = NO;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        void *handle = dlopen("/System/Library/PrivateFrameworks/LoggingSupport.framework/LoggingSupport", RTLD_NOW);
+
+        OSActivityStreamForPID = (os_activity_stream_for_pid_t)dlsym(handle, "os_activity_stream_for_pid");
+        OSActivityStreamResume = (os_activity_stream_resume_t)dlsym(handle, "os_activity_stream_resume");
+        OSActivityStreamCancel = (os_activity_stream_cancel_t)dlsym(handle, "os_activity_stream_cancel");
+        OSLogCopyFormattedMessage = (os_log_copy_formatted_message_t)dlsym(handle, "os_log_copy_formatted_message");
+        OSActivityStreamSetEventHandler = (os_activity_stream_set_event_handler_t)dlsym(handle, "os_activity_stream_set_event_handler");
+        proc_name = (int(*)(int, char *, unsigned int))dlsym(handle, "proc_name");
+        proc_listpids = (int(*)(uint32_t, uint32_t, void*, int))dlsym(handle, "proc_listpids");
+        OSLogGetType = (uint8_t(*)(void *))dlsym(handle, "os_log_get_type");
+
+        hasSPI = (OSActivityStreamForPID != NULL) &&
+                (OSActivityStreamResume != NULL) &&
+                (OSActivityStreamCancel != NULL) &&
+                (OSLogCopyFormattedMessage != NULL) &&
+                (OSActivityStreamSetEventHandler != NULL) &&
+                (OSLogGetType != NULL) &&
+                (proc_name != NULL);
+    });
+    
+    return hasSPI;
+}
+
+- (BOOL)handleStreamEntry:(os_activity_stream_entry_t)entry error:(int)error {
+    if (!self.canPrint || (self.filterPid != -1 && entry->pid != self.filterPid)) {
+        return YES;
+    }
+
+    if (!error && entry) {
+        if (entry->type == OS_ACTIVITY_STREAM_TYPE_LOG_MESSAGE ||
+            entry->type == OS_ACTIVITY_STREAM_TYPE_LEGACY_LOG_MESSAGE) {
+            os_log_message_t log_message = &entry->log_message;
+            
+            // Get date
+            NSDate *date = [NSDate dateWithTimeIntervalSince1970:log_message->tv_gmt.tv_sec];
+            
+            // Get log message text
+            const char *messageText = OSLogCopyFormattedMessage(log_message);
+            // https://github.com/limneos/oslog/issues/1
+            if (entry->log_message.format && !(strcmp(entry->log_message.format, messageText))) {
+                messageText = (char *)entry->log_message.format;
+            }
+
+            dispatch_async(dispatch_get_main_queue(), ^{
+                FLEXSystemLogMessage *message = [FLEXSystemLogMessage logMessageFromDate:date text:@(messageText)];
+                if (self.persistent) {
+                    [self.messages addObject:message];
+                }
+                if (self.updateHandler) {
+                    self.updateHandler(@[message]);
+                }
+            });
+        }
+    }
+    
+    return YES;
+}
+
+- (os_activity_stream_event_block_t)streamEventHandlerBlock {
+    return [^void(os_activity_stream_t stream, os_activity_stream_event_t event) {
+        switch (event) {
+            case OS_ACTIVITY_STREAM_EVENT_STARTED:
+                self.canPrint = YES;
+                break;
+            case OS_ACTIVITY_STREAM_EVENT_STOPPED:
+                break;
+            case OS_ACTIVITY_STREAM_EVENT_FAILED:
+                break;
+            case OS_ACTIVITY_STREAM_EVENT_CHUNK_STARTED:
+                break;
+            case OS_ACTIVITY_STREAM_EVENT_CHUNK_FINISHED:
+                break;
+            default:
+                printf("=== Unhandled case ===\n");
+                break;
+        }
+    } copy];
+}
+
+@end

Classes/GlobalStateExplorers/SystemLog/FLEXSystemLogMessage.h

@@ -1,6 +1,6 @@
 //
 //  FLEXSystemLogMessage.h
-//  UICatalog
+//  FLEX
 //
 //  Created by Ryan Olson on 1/25/15.
 //  Copyright (c) 2015 f. All rights reserved.
@@ -8,14 +8,24 @@
 
 #import <Foundation/Foundation.h>
 #import <asl.h>
+#import "ActivityStreamAPI.h"
+
+NS_ASSUME_NONNULL_BEGIN
 
 @interface FLEXSystemLogMessage : NSObject
 
 + (instancetype)logMessageFromASLMessage:(aslmsg)aslMessage;
+//+ (instancetype)logMessageFromOSLog:(os_log_message_t)logMessage;
++ (instancetype)logMessageFromDate:(NSDate *)date text:(NSString *)text;
 
-@property (nonatomic, strong) NSDate *date;
-@property (nonatomic, copy) NSString *sender;
-@property (nonatomic, copy) NSString *messageText;
-@property (nonatomic, assign) long long messageID;
+// ASL specific properties
+@property (nonatomic, readonly, nullable) NSString *sender;
+@property (nonatomic, readonly, nullable) aslmsg aslMessage;
+
+@property (nonatomic, readonly) NSDate *date;
+@property (nonatomic, readonly) NSString *messageText;
+@property (nonatomic, readonly) long long messageID;
 
 @end
+
+NS_ASSUME_NONNULL_END

Classes/GlobalStateExplorers/SystemLog/FLEXSystemLogMessage.m

@@ -1,6 +1,6 @@
 //
 //  FLEXSystemLogMessage.m
-//  UICatalog
+//  FLEX
 //
 //  Created by Ryan Olson on 1/25/15.
 //  Copyright (c) 2015 f. All rights reserved.
@@ -10,9 +10,11 @@
 
 @implementation FLEXSystemLogMessage
 
-+(instancetype)logMessageFromASLMessage:(aslmsg)aslMessage
++ (instancetype)logMessageFromASLMessage:(aslmsg)aslMessage
 {
-    FLEXSystemLogMessage *logMessage = [[FLEXSystemLogMessage alloc] init];
+    NSDate *date = nil;
+    NSString *sender = nil, *text = nil;
+    long long identifier = 0;
 
     const char *timestamp = asl_get(aslMessage, ASL_KEY_TIME);
     if (timestamp) {
@@ -21,30 +23,67 @@
         if (nanoseconds) {
             timeInterval += [@(nanoseconds) doubleValue] / NSEC_PER_SEC;
         }
-        logMessage.date = [NSDate dateWithTimeIntervalSince1970:timeInterval];
+        date = [NSDate dateWithTimeIntervalSince1970:timeInterval];
     }
 
-    const char *sender = asl_get(aslMessage, ASL_KEY_SENDER);
-    if (sender) {
-        logMessage.sender = @(sender);
+    const char *s = asl_get(aslMessage, ASL_KEY_SENDER);
+    if (s) {
+        sender = @(s);
     }
 
     const char *messageText = asl_get(aslMessage, ASL_KEY_MSG);
     if (messageText) {
-        logMessage.messageText = @(messageText);
+        text = @(messageText);
     }
 
     const char *messageID = asl_get(aslMessage, ASL_KEY_MSG_ID);
     if (messageID) {
-        logMessage.messageID = [@(messageID) longLongValue];
+        identifier = [@(messageID) longLongValue];
     }
 
-    return logMessage;
+    FLEXSystemLogMessage *message = [[self alloc] initWithDate:date sender:sender text:text messageID:identifier];
+    message->_aslMessage = aslMessage;
+    return message;
+}
+
++ (instancetype)logMessageFromOSLog:(os_log_message_t)logMessage
+{
+    abort();
+    return nil;
+}
+
++ (instancetype)logMessageFromDate:(NSDate *)date text:(NSString *)text
+{
+    return [[self alloc] initWithDate:date sender:nil text:text messageID:0];
+}
+
+- (id)initWithDate:(NSDate *)date sender:(NSString *)sender text:(NSString *)text messageID:(long long)identifier
+{
+    self = [super init];
+    if (self) {
+        _date = date;
+        _sender = sender;
+        _messageText = text;
+        _messageID = identifier;
+    }
+
+    return self;
 }
 
 - (BOOL)isEqual:(id)object
 {
-    return [object isKindOfClass:[FLEXSystemLogMessage class]] && self.messageID == [object messageID];
+    if ([object isKindOfClass:[self class]]) {
+        if (self.messageID) {
+            // Only ASL uses messageID, otherwise it is 0
+            return self.messageID == [object messageID];
+        } else {
+            // Test message texts and dates for OS Log
+            return [self.messageText isEqual:[object messageText]] &&
+                    [self.date isEqualToDate:[object date]];
+        }
+    }
+    
+    return NO;
 }
 
 - (NSUInteger)hash
@@ -52,4 +91,10 @@
     return (NSUInteger)self.messageID;
 }
 
+- (NSString *)description
+{
+    NSString *escaped = [self.messageText stringByReplacingOccurrencesOfString:@"\n" withString:@"\\n"];
+    return [NSString stringWithFormat:@"(%lu) %@", self.messageText.length, escaped];
+}
+
 @end

Classes/GlobalStateExplorers/SystemLog/FLEXSystemLogTableViewCell.h

@@ -1,6 +1,6 @@
 //
 //  FLEXSystemLogTableViewCell.h
-//  UICatalog
+//  FLEX
 //
 //  Created by Ryan Olson on 1/25/15.
 //  Copyright (c) 2015 f. All rights reserved.

Classes/GlobalStateExplorers/SystemLog/FLEXSystemLogTableViewCell.m

@@ -1,6 +1,6 @@
 //
 //  FLEXSystemLogTableViewCell.m
-//  UICatalog
+//  FLEX
 //
 //  Created by Ryan Olson on 1/25/15.
 //  Copyright (c) 2015 f. All rights reserved.
@@ -74,12 +74,12 @@ static const UIEdgeInsets kFLEXLogMessageCellInsets = {10.0, 10.0, 10.0, 10.0};
 + (NSAttributedString *)attributedTextForLogMessage:(FLEXSystemLogMessage *)logMessage highlightedText:(NSString *)highlightedText
 {
     NSString *text = [self displayedTextForLogMessage:logMessage];
-    NSDictionary *attributes = @{ NSFontAttributeName : [UIFont fontWithName:@"CourierNewPSMT" size:12.0] };
+    NSDictionary<NSString *, id> *attributes = @{ NSFontAttributeName : [UIFont fontWithName:@"CourierNewPSMT" size:12.0] };
     NSAttributedString *attributedText = [[NSAttributedString alloc] initWithString:text attributes:attributes];
 
     if ([highlightedText length] > 0) {
         NSMutableAttributedString *mutableAttributedText = [attributedText mutableCopy];
-        NSMutableDictionary *highlightAttributes = [@{ NSBackgroundColorAttributeName : [UIColor yellowColor] } mutableCopy];
+        NSMutableDictionary<NSString *, id> *highlightAttributes = [@{ NSBackgroundColorAttributeName : [UIColor yellowColor] } mutableCopy];
         [highlightAttributes addEntriesFromDictionary:attributes];
         
         NSRange remainingSearchRange = NSMakeRange(0, text.length);

Classes/GlobalStateExplorers/SystemLog/FLEXSystemLogTableViewController.h

@@ -1,6 +1,6 @@
 //
 //  FLEXSystemLogTableViewController.h
-//  UICatalog
+//  FLEX
 //
 //  Created by Ryan Olson on 1/19/15.
 //  Copyright (c) 2015 f. All rights reserved.

Classes/GlobalStateExplorers/SystemLog/FLEXSystemLogTableViewController.m

@@ -1,6 +1,6 @@
 //
 //  FLEXSystemLogTableViewController.m
-//  UICatalog
+//  FLEX
 //
 //  Created by Ryan Olson on 1/19/15.
 //  Copyright (c) 2015 f. All rights reserved.
@@ -8,19 +8,16 @@
 
 #import "FLEXSystemLogTableViewController.h"
 #import "FLEXUtility.h"
-#import "FLEXSystemLogMessage.h"
+#import "FLEXASLLogController.h"
+#import "FLEXOSLogController.h"
 #import "FLEXSystemLogTableViewCell.h"
-#import <asl.h>
 
-@interface FLEXSystemLogTableViewController () <UISearchDisplayDelegate>
+@interface FLEXSystemLogTableViewController () <UISearchResultsUpdating, UISearchControllerDelegate>
 
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wdeprecated-declarations"
-@property (nonatomic, strong) UISearchDisplayController *searchController;
-#pragma clang diagnostic pop
-@property (nonatomic, copy) NSArray *logMessages;
-@property (nonatomic, copy) NSArray *filteredLogMessages;
-@property (nonatomic, strong) NSTimer *logUpdateTimer;
+@property (nonatomic, strong) UISearchController *searchController;
+@property (nonatomic, readonly) id<FLEXLogController> logController;
+@property (nonatomic, readonly) NSMutableArray<FLEXSystemLogMessage *> *logMessages;
+@property (nonatomic, copy) NSArray<FLEXSystemLogMessage *> *filteredLogMessages;
 
 @end
 
@@ -30,64 +27,56 @@
 {
     [super viewDidLoad];
 
+    id logHandler = ^(NSArray<FLEXSystemLogMessage *> *newMessages) {
+        self.title = @"System Log";
+
+        [self.logMessages addObjectsFromArray:newMessages];
+
+        // "Follow" the log as new messages stream in if we were previously near the bottom.
+        BOOL wasNearBottom = self.tableView.contentOffset.y >= self.tableView.contentSize.height - self.tableView.frame.size.height - 100.0;
+        [self.tableView reloadData];
+        if (wasNearBottom) {
+            [self scrollToLastRow];
+        }
+    };
+
+    _logMessages = [NSMutableArray array];
+    if ([NSProcessInfo processInfo].operatingSystemVersion.majorVersion <= 9) {
+        _logController = [FLEXASLLogController withUpdateHandler:logHandler];
+    } else {
+        _logController = [FLEXOSLogController withUpdateHandler:logHandler];
+    }
+
     [self.tableView registerClass:[FLEXSystemLogTableViewCell class] forCellReuseIdentifier:kFLEXSystemLogTableViewCellIdentifier];
     self.tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
     self.title = @"Loading...";
-    self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@" ⬇︎ " style:UIBarButtonItemStylePlain target:self action:@selector(scrollToLastRow)];
-
-    UISearchBar *searchBar = [[UISearchBar alloc] init];
-    [searchBar sizeToFit];
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wdeprecated-declarations"
-    self.searchController = [[UISearchDisplayController alloc] initWithSearchBar:searchBar contentsController:self];
-#pragma clang diagnostic pop
+    
+    UIBarButtonItem *scrollDown = [[UIBarButtonItem alloc] initWithTitle:@" ⬇︎ "
+                                                                   style:UIBarButtonItemStylePlain
+                                                                  target:self
+                                                                  action:@selector(scrollToLastRow)];
+    UIBarButtonItem *settings = [[UIBarButtonItem alloc] initWithTitle:@"Settings"
+                                                                 style:UIBarButtonItemStylePlain
+                                                                target:self
+                                                                action:@selector(showLogSettings)];
+    if (FLEXOSLogAvailable()) {
+        self.navigationItem.rightBarButtonItems = @[scrollDown, settings];
+    } else {
+        self.navigationItem.rightBarButtonItem = scrollDown;
+    }
+    
+    self.searchController = [[UISearchController alloc] initWithSearchResultsController:nil];
     self.searchController.delegate = self;
-    self.searchController.searchResultsDataSource = self;
-    self.searchController.searchResultsDelegate = self;
-    [self.searchController.searchResultsTableView registerClass:[FLEXSystemLogTableViewCell class] forCellReuseIdentifier:kFLEXSystemLogTableViewCellIdentifier];
-    self.searchController.searchResultsTableView.separatorStyle = UITableViewCellSeparatorStyleNone;
+    self.searchController.searchResultsUpdater = self;
+    self.searchController.dimsBackgroundDuringPresentation = NO;
     self.tableView.tableHeaderView = self.searchController.searchBar;
-
-    [self updateLogMessages];
 }
 
 - (void)viewWillAppear:(BOOL)animated
 {
     [super viewWillAppear:animated];
 
-    NSTimeInterval updateInterval = 1.0;
-
-#if TARGET_IPHONE_SIMULATOR
-    // Querrying the ASL is much slower in the simulator. We need a longer polling interval to keep things repsonsive.
-    updateInterval = 5.0;
-#endif
-
-    self.logUpdateTimer = [NSTimer scheduledTimerWithTimeInterval:updateInterval target:self selector:@selector(updateLogMessages) userInfo:nil repeats:YES];
-}
-
-- (void)viewWillDisappear:(BOOL)animated
-{
-    [super viewWillDisappear:animated];
-
-    [self.logUpdateTimer invalidate];
-}
-
-- (void)updateLogMessages
-{
-    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
-        NSArray *logMessages = [[self class] allLogMessagesForCurrentProcess];
-        dispatch_async(dispatch_get_main_queue(), ^{
-            self.title = @"System Log";
-            self.logMessages = logMessages;
-
-            // "Follow" the log as new messages stream in if we were previously near the bottom.
-            BOOL wasNearBottom = self.tableView.contentOffset.y >= self.tableView.contentSize.height - self.tableView.frame.size.height - 100.0;
-            [self.tableView reloadData];
-            if (wasNearBottom) {
-                [self scrollToLastRow];
-            }
-        });
-    });
+    [self.logController startMonitoring];
 }
 
 - (void)scrollToLastRow
@@ -99,6 +88,27 @@
     }
 }
 
+- (void)showLogSettings
+{
+    FLEXOSLogController *logController = (FLEXOSLogController *)self.logController;
+    BOOL persistent = [[NSUserDefaults standardUserDefaults] boolForKey:kFLEXiOSPersistentOSLogKey];
+    NSString *toggle = persistent ? @"Disable" : @"Enable";
+    NSString *title = [@"Persistent logging: " stringByAppendingString:persistent ? @"ON" : @"OFF"];
+    NSString *body = @"In iOS 10 and up, ASL is gone. The OS Log API is much more limited. "
+    "To get as close to the old behavior as possible, logs must be collected manually at launch and stored.\n\n"
+    "Turn this feature on only when you need it.";
+    
+    UIAlertController *settings = [UIAlertController alertControllerWithTitle:title message:body preferredStyle:UIAlertControllerStyleAlert];
+    [settings addAction:[UIAlertAction actionWithTitle:toggle style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) {
+        [[NSUserDefaults standardUserDefaults] setBool:!persistent forKey:kFLEXiOSPersistentOSLogKey];
+        logController.persistent = !persistent;
+        [logController.messages addObjectsFromArray:self.logMessages];
+    }]];
+    [settings addAction:[UIAlertAction actionWithTitle:@"Dismiss" style:UIAlertActionStyleCancel handler:nil]];
+    
+    [self presentViewController:settings animated:YES completion:nil];
+}
+
 #pragma mark - Table view data source
 
 - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
@@ -108,25 +118,15 @@
 
 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
 {
-    NSInteger numberOfRows = 0;
-    if (tableView == self.tableView) {
-        numberOfRows = [self.logMessages count];
-    } else if (tableView == self.searchController.searchResultsTableView) {
-        numberOfRows = [self.filteredLogMessages count];
-    }
-    return numberOfRows;
+    return self.searchController.isActive ? self.filteredLogMessages.count : self.logMessages.count;
 }
 
 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
 {
     FLEXSystemLogTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:kFLEXSystemLogTableViewCellIdentifier forIndexPath:indexPath];
-    if (tableView == self.tableView) {
-        cell.logMessage = [self.logMessages objectAtIndex:indexPath.row];
-        cell.highlightedText = nil;
-    } else if (tableView == self.searchController.searchResultsTableView) {
-        cell.logMessage = [self.filteredLogMessages objectAtIndex:indexPath.row];
-        cell.highlightedText = self.searchController.searchBar.text;
-    }
+    cell.logMessage = [self logMessageAtIndexPath:indexPath];
+    cell.highlightedText = self.searchController.searchBar.text;
+    
     if (indexPath.row % 2 == 0) {
         cell.backgroundColor = [UIColor colorWithWhite:0.95 alpha:1.0];
     } else {
@@ -138,12 +138,7 @@
 
 - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
 {
-    FLEXSystemLogMessage *logMessage = nil;
-    if (tableView == self.tableView) {
-        logMessage = [self.logMessages objectAtIndex:indexPath.row];
-    } else if (tableView == self.searchController.searchResultsTableView) {
-        logMessage = [self.filteredLogMessages objectAtIndex:indexPath.row];
-    }
+    FLEXSystemLogMessage *logMessage = [self logMessageAtIndexPath:indexPath];
     return [FLEXSystemLogTableViewCell preferredHeightForLogMessage:logMessage inWidth:self.tableView.bounds.size.width];
 }
 
@@ -162,76 +157,33 @@
 - (void)tableView:(UITableView *)tableView performAction:(SEL)action forRowAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender
 {
     if (action == @selector(copy:)) {
-        FLEXSystemLogMessage *logMessage = nil;
-        if (tableView == self.tableView) {
-            logMessage = [self.logMessages objectAtIndex:indexPath.row];
-        } else if (tableView == self.searchController.searchResultsTableView) {
-            logMessage = [self.filteredLogMessages objectAtIndex:indexPath.row];
-        }
-
-        NSString *stringToCopy = [FLEXSystemLogTableViewCell displayedTextForLogMessage:logMessage] ?: @"";
-        [[UIPasteboard generalPasteboard] setString:stringToCopy];
+        // We usually only want to copy the log message itself, not any metadata associated with it.
+        [UIPasteboard generalPasteboard].string = [self logMessageAtIndexPath:indexPath].messageText;
     }
 }
 
-#pragma mark - Search display delegate
-
-- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString
+- (FLEXSystemLogMessage *)logMessageAtIndexPath:(NSIndexPath *)indexPath
 {
+    return self.searchController.isActive ? self.filteredLogMessages[indexPath.row] : self.logMessages[indexPath.row];
+}
+
+#pragma mark - UISearchResultsUpdating
+
+- (void)updateSearchResultsForSearchController:(UISearchController *)searchController
+{
+    NSString *searchString = searchController.searchBar.text;
     dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
-        NSArray *filteredLogMessages = [self.logMessages filteredArrayUsingPredicate:[NSPredicate predicateWithBlock:^BOOL(FLEXSystemLogMessage *logMessage, NSDictionary *bindings) {
+        NSArray<FLEXSystemLogMessage *> *filteredLogMessages = [self.logMessages filteredArrayUsingPredicate:[NSPredicate predicateWithBlock:^BOOL(FLEXSystemLogMessage *logMessage, NSDictionary<NSString *, id> *bindings) {
             NSString *displayedText = [FLEXSystemLogTableViewCell displayedTextForLogMessage:logMessage];
             return [displayedText rangeOfString:searchString options:NSCaseInsensitiveSearch].length > 0;
         }]];
         dispatch_async(dispatch_get_main_queue(), ^{
-            if ([self.searchDisplayController.searchBar.text isEqual:searchString]) {
+            if ([searchController.searchBar.text isEqual:searchString]) {
                 self.filteredLogMessages = filteredLogMessages;
-                [self.searchDisplayController.searchResultsTableView reloadData];
+                [self.tableView reloadData];
             }
         });
     });
-
-    // Reload done after the data fetches asynchronously
-    return NO;
-}
-
-#pragma mark - Log Message Fetching
-
-// Due to a mistake in asl.h, things get a little messy. We need to mark these symbols as weak since they won't exist on iOS 7 despite the compiler thinking otherwise.
-// asl.h in the iOS 8.1 SDK claims that asl_next() and asl_release() were introduced in iOS 7 to replace aslresponse_next() and aslresponse_free(). However, they were actually added in iOS 8.0.
-extern aslmsg asl_next(asl_object_t obj) __attribute__((weak_import));
-extern void asl_release(asl_object_t obj) __attribute__((weak_import));
-
-+ (NSArray *)allLogMessagesForCurrentProcess
-{
-    asl_object_t query = asl_new(ASL_TYPE_QUERY);
-
-    // Filter for messages from the current process. Note that this appears to happen by default on device, but is required in the simulator.
-    NSString *pidString = [NSString stringWithFormat:@"%d", [[NSProcessInfo processInfo] processIdentifier]];
-    asl_set_query(query, ASL_KEY_PID, [pidString UTF8String], ASL_QUERY_OP_EQUAL);
-
-    aslresponse response = asl_search(NULL, query);
-    aslmsg aslMessage = NULL;
-
-    NSMutableArray *logMessages = [NSMutableArray array];
-
-    if (&asl_next != NULL && &asl_release != NULL) {
-        while ((aslMessage = asl_next(response))) {
-            [logMessages addObject:[FLEXSystemLogMessage logMessageFromASLMessage:aslMessage]];
-        }
-        asl_release(response);
-    } else {
-        // Mute incorrect deprecated warnings. We'll need the "deprecated" functions on iOS 7, where their replacements don't yet exist.
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wdeprecated-declarations"
-        while ((aslMessage = aslresponse_next(response))) {
-            [logMessages addObject:[FLEXSystemLogMessage logMessageFromASLMessage:aslMessage]];
-        }
-        aslresponse_free(response);
-#pragma clang diagnostic pop
-    }
-
-    return logMessages;
 }
 
 @end

Classes/GlobalStateExplorers/SystemLog/LLVM_LICENSE.TXT

@@ -0,0 +1,276 @@
+==============================================================================
+The LLVM Project is under the Apache License v2.0 with LLVM Exceptions:
+==============================================================================
+
+                                 Apache License
+                           Version 2.0, January 2004
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+
+    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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+       http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
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+
+In addition, if you combine or link compiled forms of this Software with
+software that is licensed under the GPLv2 ("Combined Software") and if a
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+
+==============================================================================
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+terms. All such code will be identified clearly using at least one of two
+mechanisms:
+1) It will be in a separate directory tree with its own `LICENSE.txt` or
+   `LICENSE` file at the top containing the specific license and restrictions
+   which apply to that software, or
+2) It will contain specific license and restriction terms at the top of every
+   file.
+
+==============================================================================
+Legacy LLVM License (https://llvm.org/docs/DeveloperPolicy.html#legacy):
+==============================================================================
+University of Illinois/NCSA
+Open Source License
+
+Copyright (c) 2010 Apple Inc.
+All rights reserved.
+
+Developed by:
+
+    LLDB Team
+
+    http://lldb.llvm.org/
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal with
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+    * Redistributions of source code must retain the above copyright notice,
+      this list of conditions and the following disclaimers.
+
+    * Redistributions in binary form must reproduce the above copyright notice,
+      this list of conditions and the following disclaimers in the
+      documentation and/or other materials provided with the distribution.
+
+    * Neither the names of the LLDB Team, copyright holders, nor the names of 
+      its contributors may be used to endorse or promote products derived from 
+      this Software without specific prior written permission.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE
+SOFTWARE.
+

Classes/Info.plist

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>FMWK</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>$(CURRENT_PROJECT_VERSION)</string>
+	<key>NSPrincipalClass</key>
+	<string></string>
+</dict>
+</plist>

Classes/Manager/FLEXManager+Private.h

@@ -8,9 +8,13 @@
 
 #import "FLEXManager.h"
 
+@class FLEXGlobalsTableViewControllerEntry;
+
 @interface FLEXManager ()
 
 /// An array of FLEXGlobalsTableViewControllerEntry objects that have been registered by the user.
-@property (nonatomic, readonly, strong) NSArray *userGlobalEntries;
+@property (nonatomic, readonly, strong) NSArray<FLEXGlobalsTableViewControllerEntry *> *userGlobalEntries;
+
+@property (nonatomic, readonly, strong) NSDictionary<NSString *, FLEXCustomContentViewerFuture> *customContentTypeViewers;
 
 @end

Classes/Manager/FLEXManager.m

@@ -0,0 +1,381 @@
+//
+//  FLEXManager.m
+//  Flipboard
+//
+//  Created by Ryan Olson on 4/4/14.
+//  Copyright (c) 2014 Flipboard. All rights reserved.
+//
+
+#import "FLEXManager.h"
+#import "FLEXExplorerViewController.h"
+#import "FLEXWindow.h"
+#import "FLEXGlobalsTableViewControllerEntry.h"
+#import "FLEXObjectExplorerFactory.h"
+#import "FLEXObjectExplorerViewController.h"
+#import "FLEXNetworkObserver.h"
+#import "FLEXNetworkRecorder.h"
+#import "FLEXKeyboardShortcutManager.h"
+#import "FLEXFileBrowserTableViewController.h"
+#import "FLEXNetworkHistoryTableViewController.h"
+#import "FLEXKeyboardHelpViewController.h"
+
+@interface FLEXManager () <FLEXWindowEventDelegate, FLEXExplorerViewControllerDelegate>
+
+@property (nonatomic, strong) FLEXWindow *explorerWindow;
+@property (nonatomic, strong) FLEXExplorerViewController *explorerViewController;
+
+@property (nonatomic, readonly, strong) NSMutableArray<FLEXGlobalsTableViewControllerEntry *> *userGlobalEntries;
+@property (nonatomic, readonly, strong) NSMutableDictionary<NSString *, FLEXCustomContentViewerFuture> *customContentTypeViewers;
+
+@end
+
+@implementation FLEXManager
+
++ (instancetype)sharedManager
+{
+    static FLEXManager *sharedManager = nil;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        sharedManager = [[[self class] alloc] init];
+    });
+    return sharedManager;
+}
+
+- (instancetype)init
+{
+    self = [super init];
+    if (self) {
+        _userGlobalEntries = [NSMutableArray array];
+        _customContentTypeViewers = [NSMutableDictionary dictionary];
+    }
+    return self;
+}
+
+- (FLEXWindow *)explorerWindow
+{
+    NSAssert([NSThread isMainThread], @"You must use %@ from the main thread only.", NSStringFromClass([self class]));
+    
+    if (!_explorerWindow) {
+        _explorerWindow = [[FLEXWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
+        _explorerWindow.eventDelegate = self;
+        _explorerWindow.rootViewController = self.explorerViewController;
+    }
+    
+    return _explorerWindow;
+}
+
+- (FLEXExplorerViewController *)explorerViewController
+{
+    if (!_explorerViewController) {
+        _explorerViewController = [[FLEXExplorerViewController alloc] init];
+        _explorerViewController.delegate = self;
+    }
+
+    return _explorerViewController;
+}
+
+- (void)showExplorer
+{
+    self.explorerWindow.hidden = NO;
+}
+
+- (void)hideExplorer
+{
+    self.explorerWindow.hidden = YES;
+}
+
+- (void)toggleExplorer {
+    if (self.explorerWindow.isHidden) {
+        [self showExplorer];
+    } else {
+        [self hideExplorer];
+    }
+}
+
+- (BOOL)isHidden
+{
+    return self.explorerWindow.isHidden;
+}
+
+- (BOOL)isNetworkDebuggingEnabled
+{
+    return [FLEXNetworkObserver isEnabled];
+}
+
+- (void)setNetworkDebuggingEnabled:(BOOL)networkDebuggingEnabled
+{
+    [FLEXNetworkObserver setEnabled:networkDebuggingEnabled];
+}
+
+- (NSUInteger)networkResponseCacheByteLimit
+{
+    return [[FLEXNetworkRecorder defaultRecorder] responseCacheByteLimit];
+}
+
+- (void)setNetworkResponseCacheByteLimit:(NSUInteger)networkResponseCacheByteLimit
+{
+    [[FLEXNetworkRecorder defaultRecorder] setResponseCacheByteLimit:networkResponseCacheByteLimit];
+}
+
+- (void)setNetworkRequestHostBlacklist:(NSArray<NSString *> *)networkRequestHostBlacklist
+{
+    [FLEXNetworkRecorder defaultRecorder].hostBlacklist = networkRequestHostBlacklist;
+}
+
+- (NSArray<NSString *> *)hostBlacklist
+{
+    return [FLEXNetworkRecorder defaultRecorder].hostBlacklist;
+}
+
+#pragma mark - FLEXWindowEventDelegate
+
+- (BOOL)shouldHandleTouchAtPoint:(CGPoint)pointInWindow
+{
+    // Ask the explorer view controller
+    return [self.explorerViewController shouldReceiveTouchAtWindowPoint:pointInWindow];
+}
+
+- (BOOL)canBecomeKeyWindow
+{
+    // Only when the explorer view controller wants it because it needs to accept key input & affect the status bar.
+    return [self.explorerViewController wantsWindowToBecomeKey];
+}
+
+
+#pragma mark - FLEXExplorerViewControllerDelegate
+
+- (void)explorerViewControllerDidFinish:(FLEXExplorerViewController *)explorerViewController
+{
+    [self hideExplorer];
+}
+
+#pragma mark - Simulator Shortcuts
+
+- (void)registerSimulatorShortcutWithKey:(NSString *)key modifiers:(UIKeyModifierFlags)modifiers action:(dispatch_block_t)action description:(NSString *)description
+{
+# if TARGET_OS_SIMULATOR
+    [[FLEXKeyboardShortcutManager sharedManager] registerSimulatorShortcutWithKey:key modifiers:modifiers action:action description:description];
+#endif
+}
+
+- (void)setSimulatorShortcutsEnabled:(BOOL)simulatorShortcutsEnabled
+{
+# if TARGET_OS_SIMULATOR
+    [[FLEXKeyboardShortcutManager sharedManager] setEnabled:simulatorShortcutsEnabled];
+#endif
+}
+
+- (BOOL)simulatorShortcutsEnabled
+{
+# if TARGET_OS_SIMULATOR
+    return [[FLEXKeyboardShortcutManager sharedManager] isEnabled];
+#else
+    return NO;
+#endif
+}
+
+- (void)registerDefaultSimulatorShortcuts
+{
+    [self registerSimulatorShortcutWithKey:@"f" modifiers:0 action:^{
+        [self toggleExplorer];
+    } description:@"Toggle FLEX toolbar"];
+    
+    [self registerSimulatorShortcutWithKey:@"g" modifiers:0 action:^{
+        [self showExplorerIfNeeded];
+        [self.explorerViewController toggleMenuTool];
+    } description:@"Toggle FLEX globals menu"];
+    
+    [self registerSimulatorShortcutWithKey:@"v" modifiers:0 action:^{
+        [self showExplorerIfNeeded];
+        [self.explorerViewController toggleViewsTool];
+    } description:@"Toggle view hierarchy menu"];
+    
+    [self registerSimulatorShortcutWithKey:@"s" modifiers:0 action:^{
+        [self showExplorerIfNeeded];
+        [self.explorerViewController toggleSelectTool];
+    } description:@"Toggle select tool"];
+    
+    [self registerSimulatorShortcutWithKey:@"m" modifiers:0 action:^{
+        [self showExplorerIfNeeded];
+        [self.explorerViewController toggleMoveTool];
+    } description:@"Toggle move tool"];
+    
+    [self registerSimulatorShortcutWithKey:@"n" modifiers:0 action:^{
+        [self toggleTopViewControllerOfClass:[FLEXNetworkHistoryTableViewController class]];
+    } description:@"Toggle network history view"];
+    
+    [self registerSimulatorShortcutWithKey:UIKeyInputDownArrow modifiers:0 action:^{
+        if ([self isHidden]) {
+            [self tryScrollDown];
+        } else {
+            [self.explorerViewController handleDownArrowKeyPressed];
+        }
+    } description:@"Cycle view selection\n\t\tMove view down\n\t\tScroll down"];
+    
+    [self registerSimulatorShortcutWithKey:UIKeyInputUpArrow modifiers:0 action:^{
+        if ([self isHidden]) {
+            [self tryScrollUp];
+        } else {
+            [self.explorerViewController handleUpArrowKeyPressed];
+        }
+    } description:@"Cycle view selection\n\t\tMove view up\n\t\tScroll up"];
+    
+    [self registerSimulatorShortcutWithKey:UIKeyInputRightArrow modifiers:0 action:^{
+        if (![self isHidden]) {
+            [self.explorerViewController handleRightArrowKeyPressed];
+        }
+    } description:@"Move selected view right"];
+    
+    [self registerSimulatorShortcutWithKey:UIKeyInputLeftArrow modifiers:0 action:^{
+        if ([self isHidden]) {
+            [self tryGoBack];
+        } else {
+            [self.explorerViewController handleLeftArrowKeyPressed];
+        }
+    } description:@"Move selected view left"];
+    
+    [self registerSimulatorShortcutWithKey:@"?" modifiers:0 action:^{
+        [self toggleTopViewControllerOfClass:[FLEXKeyboardHelpViewController class]];
+    } description:@"Toggle (this) help menu"];
+    
+    [self registerSimulatorShortcutWithKey:UIKeyInputEscape modifiers:0 action:^{
+        [[[self topViewController] presentingViewController] dismissViewControllerAnimated:YES completion:nil];
+    } description:@"End editing text\n\t\tDismiss top view controller"];
+    
+    [self registerSimulatorShortcutWithKey:@"o" modifiers:UIKeyModifierCommand|UIKeyModifierShift action:^{
+        [self toggleTopViewControllerOfClass:[FLEXFileBrowserTableViewController class]];
+    } description:@"Toggle file browser menu"];
+}
+
++ (void)load
+{
+    dispatch_async(dispatch_get_main_queue(), ^{
+        [[[self class] sharedManager] registerDefaultSimulatorShortcuts];
+    });
+}
+
+#pragma mark - Extensions
+
+- (void)registerGlobalEntryWithName:(NSString *)entryName objectFutureBlock:(id (^)(void))objectFutureBlock
+{
+    NSParameterAssert(entryName);
+    NSParameterAssert(objectFutureBlock);
+    NSAssert([NSThread isMainThread], @"This method must be called from the main thread.");
+
+    entryName = entryName.copy;
+    FLEXGlobalsTableViewControllerEntry *entry = [FLEXGlobalsTableViewControllerEntry entryWithNameFuture:^NSString *{
+        return entryName;
+    } viewControllerFuture:^UIViewController *{
+        return [FLEXObjectExplorerFactory explorerViewControllerForObject:objectFutureBlock()];
+    }];
+
+    [self.userGlobalEntries addObject:entry];
+}
+
+- (void)registerGlobalEntryWithName:(NSString *)entryName viewControllerFutureBlock:(UIViewController * (^)(void))viewControllerFutureBlock
+{
+    NSParameterAssert(entryName);
+    NSParameterAssert(viewControllerFutureBlock);
+    NSAssert([NSThread isMainThread], @"This method must be called from the main thread.");
+
+    entryName = entryName.copy;
+    FLEXGlobalsTableViewControllerEntry *entry = [FLEXGlobalsTableViewControllerEntry entryWithNameFuture:^NSString *{
+        return entryName;
+    } viewControllerFuture:^UIViewController *{
+        UIViewController *viewController = viewControllerFutureBlock();
+        NSCAssert(viewController, @"'%@' entry returned nil viewController. viewControllerFutureBlock should never return nil.", entryName);
+        return viewController;
+    }];
+
+    [self.userGlobalEntries addObject:entry];
+}
+
+- (void)setCustomViewerForContentType:(NSString *)contentType viewControllerFutureBlock:(FLEXCustomContentViewerFuture)viewControllerFutureBlock
+{
+    NSParameterAssert(contentType.length);
+    NSParameterAssert(viewControllerFutureBlock);
+    NSAssert([NSThread isMainThread], @"This method must be called from the main thread.");
+
+    self.customContentTypeViewers[contentType.lowercaseString] = viewControllerFutureBlock;
+}
+
+- (void)tryScrollDown
+{
+    UIScrollView *firstScrollView = [self firstScrollView];
+    CGPoint contentOffset = [firstScrollView contentOffset];
+    CGFloat distance = floor(firstScrollView.frame.size.height / 2.0);
+    CGFloat maxContentOffsetY = firstScrollView.contentSize.height + firstScrollView.contentInset.bottom - firstScrollView.frame.size.height;
+    distance = MIN(maxContentOffsetY - firstScrollView.contentOffset.y, distance);
+    contentOffset.y += distance;
+    [firstScrollView setContentOffset:contentOffset animated:YES];
+}
+
+- (void)tryScrollUp
+{
+    UIScrollView *firstScrollView = [self firstScrollView];
+    CGPoint contentOffset = [firstScrollView contentOffset];
+    CGFloat distance = floor(firstScrollView.frame.size.height / 2.0);
+    CGFloat minContentOffsetY = -firstScrollView.contentInset.top;
+    distance = MIN(firstScrollView.contentOffset.y - minContentOffsetY, distance);
+    contentOffset.y -= distance;
+    [firstScrollView setContentOffset:contentOffset animated:YES];
+}
+
+- (UIScrollView *)firstScrollView
+{
+    NSMutableArray<UIView *> *views = [[[[UIApplication sharedApplication] keyWindow] subviews] mutableCopy];
+    UIScrollView *scrollView = nil;
+    while ([views count] > 0) {
+        UIView *view = [views firstObject];
+        [views removeObjectAtIndex:0];
+        if ([view isKindOfClass:[UIScrollView class]]) {
+            scrollView = (UIScrollView *)view;
+            break;
+        } else {
+            [views addObjectsFromArray:[view subviews]];
+        }
+    }
+    return scrollView;
+}
+
+- (void)tryGoBack
+{
+    UINavigationController *navigationController = nil;
+    UIViewController *topViewController = [self topViewController];
+    if ([topViewController isKindOfClass:[UINavigationController class]]) {
+        navigationController = (UINavigationController *)topViewController;
+    } else {
+        navigationController = topViewController.navigationController;
+    }
+    [navigationController popViewControllerAnimated:YES];
+}
+
+- (UIViewController *)topViewController
+{
+    UIViewController *topViewController = [[[UIApplication sharedApplication] keyWindow] rootViewController];
+    while ([topViewController presentedViewController]) {
+        topViewController = [topViewController presentedViewController];
+    }
+    return topViewController;
+}
+
+- (void)toggleTopViewControllerOfClass:(Class)class
+{
+    UIViewController *topViewController = [self topViewController];
+    if ([topViewController isKindOfClass:[UINavigationController class]] && [[[(UINavigationController *)topViewController viewControllers] firstObject] isKindOfClass:[class class]]) {
+        [[topViewController presentingViewController] dismissViewControllerAnimated:YES completion:nil];
+    } else {
+        id viewController = [[class alloc] init];
+        UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:viewController];
+        [topViewController presentViewController:navigationController animated:YES completion:nil];
+    }
+}
+
+- (void)showExplorerIfNeeded
+{
+    if ([self isHidden]) {
+        [self showExplorer];
+    }
+}
+
+@end

Classes/Network/FLEXNetworkCurlLogger.h

@@ -0,0 +1,19 @@
+//
+// FLEXCurlLogger.h
+//
+//
+// Created by Ji Pei on 07/27/16
+//
+
+#import <Foundation/Foundation.h>
+
+@interface FLEXNetworkCurlLogger : NSObject
+
+/**
+ * Generates a cURL command equivalent to the given request.
+ *
+ * @param request The request to be translated
+ */
++ (NSString *)curlCommandString:(NSURLRequest *)request;
+
+@end

Classes/Network/FLEXNetworkCurlLogger.m

@@ -0,0 +1,42 @@
+//
+// FLEXCurlLogger.m
+//
+//
+// Created by Ji Pei on 07/27/16
+//
+
+#import "FLEXNetworkCurlLogger.h"
+
+@implementation FLEXNetworkCurlLogger
+
++ (NSString *)curlCommandString:(NSURLRequest *)request {
+    __block NSMutableString *curlCommandString = [NSMutableString stringWithFormat:@"curl -v -X %@ ", request.HTTPMethod];
+
+    [curlCommandString appendFormat:@"\'%@\' ", request.URL.absoluteString];
+
+    [request.allHTTPHeaderFields enumerateKeysAndObjectsUsingBlock:^(NSString *key, NSString *val, BOOL *stop) {
+        [curlCommandString appendFormat:@"-H \'%@: %@\' ", key, val];
+    }];
+
+    NSArray<NSHTTPCookie *> *cookies = [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookiesForURL:request.URL];
+    if (cookies) {
+        [curlCommandString appendFormat:@"-H \'Cookie:"];
+        for (NSHTTPCookie *cookie in cookies) {
+            [curlCommandString appendFormat:@" %@=%@;", cookie.name, cookie.value];
+        }
+        [curlCommandString appendFormat:@"\' "];
+    }
+
+    if (request.HTTPBody) {
+        if ([request.allHTTPHeaderFields[@"Content-Length"] intValue] < 1024) {
+            [curlCommandString appendFormat:@"-d \'%@\'",
+             [[NSString alloc] initWithData:request.HTTPBody encoding:NSUTF8StringEncoding]];
+        } else {
+            [curlCommandString appendFormat:@"[TOO MUCH DATA TO INCLUDE]"];
+        }
+    }
+
+    return curlCommandString;
+}
+
+@end

Classes/Network/FLEXNetworkHistoryTableViewController.m

@@ -14,20 +14,18 @@
 #import "FLEXNetworkObserver.h"
 #import "FLEXNetworkSettingsTableViewController.h"
 
-@interface FLEXNetworkHistoryTableViewController () <UISearchDisplayDelegate>
+@interface FLEXNetworkHistoryTableViewController () <UISearchResultsUpdating, UISearchControllerDelegate>
 
 /// Backing model
-@property (nonatomic, copy) NSArray *networkTransactions;
+@property (nonatomic, copy) NSArray<FLEXNetworkTransaction *> *networkTransactions;
 @property (nonatomic, assign) long long bytesReceived;
-@property (nonatomic, copy) NSArray *filteredNetworkTransactions;
+@property (nonatomic, copy) NSArray<FLEXNetworkTransaction *> *filteredNetworkTransactions;
 @property (nonatomic, assign) long long filteredBytesReceived;
 
 @property (nonatomic, assign) BOOL rowInsertInProgress;
+@property (nonatomic, assign) BOOL isPresentingSearch;
 
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wdeprecated-declarations"
-@property (nonatomic, strong) UISearchDisplayController *searchController;
-#pragma clang diagnostic pop
+@property (nonatomic, strong) UISearchController *searchController;
 
 @end
 
@@ -43,6 +41,10 @@
         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleNetworkObserverEnabledStateChangedNotification:) name:kFLEXNetworkObserverEnabledStateChangedNotification object:nil];
         self.title = @"📡  Network";
         self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Settings" style:UIBarButtonItemStylePlain target:self action:@selector(settingsButtonTapped:)];
+
+        // Needed to avoid search bar showing over detail pages pushed on the nav stack
+        // see http://asciiwwdc.com/2014/sessions/228
+        self.definesPresentationContext = YES;
     }
     return self;
 }
@@ -60,18 +62,10 @@
     self.tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
     self.tableView.rowHeight = [FLEXNetworkTransactionTableViewCell preferredCellHeight];
 
-    UISearchBar *searchBar = [[UISearchBar alloc] init];
-    [searchBar sizeToFit];
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wdeprecated-declarations"
-    self.searchController = [[UISearchDisplayController alloc] initWithSearchBar:searchBar contentsController:self];
-#pragma clang diagnostic pop
+    self.searchController = [[UISearchController alloc] initWithSearchResultsController:nil];
     self.searchController.delegate = self;
-    self.searchController.searchResultsDataSource = self;
-    self.searchController.searchResultsDelegate = self;
-    [self.searchController.searchResultsTableView registerClass:[FLEXNetworkTransactionTableViewCell class] forCellReuseIdentifier:kFLEXNetworkTransactionCellIdentifier];
-    self.searchController.searchResultsTableView.separatorStyle = UITableViewCellSeparatorStyleNone;
-    self.searchController.searchResultsTableView.rowHeight = [FLEXNetworkTransactionTableViewCell preferredCellHeight];
+    self.searchController.searchResultsUpdater = self;
+    self.searchController.dimsBackgroundDuringPresentation = NO;
     self.tableView.tableHeaderView = self.searchController.searchBar;
 
     [self updateTransactions];
@@ -96,7 +90,7 @@
     self.networkTransactions = [[FLEXNetworkRecorder defaultRecorder] networkTransactions];
 }
 
-- (void)setNetworkTransactions:(NSArray *)networkTransactions
+- (void)setNetworkTransactions:(NSArray<FLEXNetworkTransaction *> *)networkTransactions
 {
     if (![_networkTransactions isEqual:networkTransactions]) {
         _networkTransactions = networkTransactions;
@@ -112,10 +106,10 @@
         bytesReceived += transaction.receivedDataLength;
     }
     self.bytesReceived = bytesReceived;
-    [self updateFirstSectionHeaderInTableView:self.tableView];
+    [self updateFirstSectionHeader];
 }
 
-- (void)setFilteredNetworkTransactions:(NSArray *)filteredNetworkTransactions
+- (void)setFilteredNetworkTransactions:(NSArray<FLEXNetworkTransaction *> *)filteredNetworkTransactions
 {
     if (![_filteredNetworkTransactions isEqual:filteredNetworkTransactions]) {
         _filteredNetworkTransactions = filteredNetworkTransactions;
@@ -130,31 +124,31 @@
         filteredBytesReceived += transaction.receivedDataLength;
     }
     self.filteredBytesReceived = filteredBytesReceived;
-    [self updateFirstSectionHeaderInTableView:self.searchController.searchResultsTableView];
+    [self updateFirstSectionHeader];
 }
 
-- (void)updateFirstSectionHeaderInTableView:(UITableView *)tableView
+- (void)updateFirstSectionHeader
 {
-    UIView *view = [tableView headerViewForSection:0];
+    UIView *view = [self.tableView headerViewForSection:0];
     if ([view isKindOfClass:[UITableViewHeaderFooterView class]]) {
         UITableViewHeaderFooterView *headerView = (UITableViewHeaderFooterView *)view;
-        headerView.textLabel.text = [self headerTextForTableView:tableView];
+        headerView.textLabel.text = [self headerText];
         [headerView setNeedsLayout];
     }
 }
 
-- (NSString *)headerTextForTableView:(UITableView *)tableView
+- (NSString *)headerText
 {
     NSString *headerText = nil;
     if ([FLEXNetworkObserver isEnabled]) {
         long long bytesReceived = 0;
         NSInteger totalRequests = 0;
-        if (tableView == self.tableView) {
-            bytesReceived = self.bytesReceived;
-            totalRequests = [self.networkTransactions count];
-        } else if (tableView == self.searchController.searchResultsTableView) {
+        if (self.searchController.isActive) {
             bytesReceived = self.filteredBytesReceived;
             totalRequests = [self.filteredNetworkTransactions count];
+        } else {
+            bytesReceived = self.bytesReceived;
+            totalRequests = [self.networkTransactions count];
         }
         NSString *byteCountText = [NSByteCountFormatter stringFromByteCount:bytesReceived countStyle:NSByteCountFormatterCountStyleBinary];
         NSString *requestsText = totalRequests == 1 ? @"Request" : @"Requests";
@@ -179,13 +173,19 @@
     if (self.rowInsertInProgress) {
         return;
     }
+    
+    if (self.searchController.isActive) {
+        [self updateTransactions];
+        [self updateSearchResults];
+        return;
+    }
 
     NSInteger existingRowCount = [self.networkTransactions count];
     [self updateTransactions];
     NSInteger newRowCount = [self.networkTransactions count];
     NSInteger addedRowCount = newRowCount - existingRowCount;
 
-    if (addedRowCount != 0) {
+    if (addedRowCount != 0 && !self.isPresentingSearch) {
         // Insert animation if we're at the top.
         if (self.tableView.contentOffset.y <= 0.0 && addedRowCount > 0) {
             [CATransaction begin];
@@ -196,7 +196,7 @@
                 [self tryUpdateTransactions];
             }];
 
-            NSMutableArray *indexPathsToReload = [NSMutableArray array];
+            NSMutableArray<NSIndexPath *> *indexPathsToReload = [NSMutableArray array];
             for (NSInteger row = 0; row < addedRowCount; row++) {
                 [indexPathsToReload addObject:[NSIndexPath indexPathForRow:row inSection:0]];
             }
@@ -210,10 +210,6 @@
             CGFloat contentHeightChange = self.tableView.contentSize.height - existingContentSize.height;
             self.tableView.contentOffset = CGPointMake(self.tableView.contentOffset.x, self.tableView.contentOffset.y + contentHeightChange);
         }
-
-        if (self.searchController.isActive) {
-            [self updateSearchResultsWithSearchString:self.searchController.searchBar.text];
-        }
     }
 }
 
@@ -222,38 +218,31 @@
     [self updateBytesReceived];
     [self updateFilteredBytesReceived];
 
-    FLEXNetworkTransaction *transaction = [notification.userInfo objectForKey:kFLEXNetworkRecorderUserInfoTransactionKey];
-    NSArray *tableViews = @[self.tableView];
-    if (self.searchController.searchResultsTableView) {
-        tableViews = [tableViews arrayByAddingObject:self.searchController.searchResultsTableView];
-    }
+    FLEXNetworkTransaction *transaction = notification.userInfo[kFLEXNetworkRecorderUserInfoTransactionKey];
 
     // Update both the main table view and search table view if needed.
-    for (UITableView *tableView in tableViews) {
-        for (FLEXNetworkTransactionTableViewCell *cell in [tableView visibleCells]) {
-            if ([cell.transaction isEqual:transaction]) {
-                // Using -[UITableView reloadRowsAtIndexPaths:withRowAnimation:] is overkill here and kicks off a lot of
-                // work that can make the table view somewhat unresponseive when lots of updates are streaming in.
-                // We just need to tell the cell that it needs to re-layout.
-                [cell setNeedsLayout];
-                break;
-            }
+    for (FLEXNetworkTransactionTableViewCell *cell in [self.tableView visibleCells]) {
+        if ([cell.transaction isEqual:transaction]) {
+            // Using -[UITableView reloadRowsAtIndexPaths:withRowAnimation:] is overkill here and kicks off a lot of
+            // work that can make the table view somewhat unresponseive when lots of updates are streaming in.
+            // We just need to tell the cell that it needs to re-layout.
+            [cell setNeedsLayout];
+            break;
         }
-        [self updateFirstSectionHeaderInTableView:tableView];
     }
+    [self updateFirstSectionHeader];
 }
 
 - (void)handleTransactionsClearedNotification:(NSNotification *)notification
 {
     [self updateTransactions];
     [self.tableView reloadData];
-    [self.searchController.searchResultsTableView reloadData];
 }
 
 - (void)handleNetworkObserverEnabledStateChangedNotification:(NSNotification *)notification
 {
     // Update the header, which displays a warning when network debugging is disabled
-    [self updateFirstSectionHeaderInTableView:self.tableView];
+    [self updateFirstSectionHeader];
 }
 
 #pragma mark - Table view data source
@@ -265,18 +254,12 @@
 
 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
 {
-    NSInteger numberOfRows = 0;
-    if (tableView == self.tableView) {
-        numberOfRows = [self.networkTransactions count];
-    } else if (tableView == self.searchController.searchResultsTableView) {
-        numberOfRows = [self.filteredNetworkTransactions count];
-    }
-    return numberOfRows;
+    return self.searchController.isActive ? [self.filteredNetworkTransactions count] : [self.networkTransactions count];
 }
 
 - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
 {
-    return [self headerTextForTableView:tableView];
+    return [self headerText];
 }
 
 - (void)tableView:(UITableView *)tableView willDisplayHeaderView:(UIView *)view forSection:(NSInteger)section
@@ -335,38 +318,47 @@
 
 - (FLEXNetworkTransaction *)transactionAtIndexPath:(NSIndexPath *)indexPath inTableView:(UITableView *)tableView
 {
-    FLEXNetworkTransaction *transaction = nil;
-    if (tableView == self.tableView) {
-        transaction = [self.networkTransactions objectAtIndex:indexPath.row];
-    } else if (tableView == self.searchController.searchResultsTableView) {
-        transaction = [self.filteredNetworkTransactions objectAtIndex:indexPath.row];
-    }
-    return transaction;
+    return self.searchController.isActive ? self.filteredNetworkTransactions[indexPath.row] : self.networkTransactions[indexPath.row];
 }
 
-#pragma mark - Search display delegate
+#pragma mark - UISearchResultsUpdating
 
-- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString
+- (void)updateSearchResultsForSearchController:(UISearchController *)searchController
 {
-    [self updateSearchResultsWithSearchString:searchString];
-
-    // Reload done after the data is filtered asynchronously
-    return NO;
+    [self updateSearchResults];
 }
 
-- (void)updateSearchResultsWithSearchString:(NSString *)searchString
+- (void)updateSearchResults
 {
+    NSString *searchString = self.searchController.searchBar.text;
     dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
-        NSArray *filteredNetworkTransactions = [self.networkTransactions filteredArrayUsingPredicate:[NSPredicate predicateWithBlock:^BOOL(FLEXNetworkTransaction *transaction, NSDictionary *bindings) {
+        NSArray<FLEXNetworkTransaction *> *filteredNetworkTransactions = [self.networkTransactions filteredArrayUsingPredicate:[NSPredicate predicateWithBlock:^BOOL(FLEXNetworkTransaction *transaction, NSDictionary<NSString *, id> *bindings) {
             return [[transaction.request.URL absoluteString] rangeOfString:searchString options:NSCaseInsensitiveSearch].length > 0;
         }]];
         dispatch_async(dispatch_get_main_queue(), ^{
             if ([self.searchController.searchBar.text isEqual:searchString]) {
                 self.filteredNetworkTransactions = filteredNetworkTransactions;
-                [self.searchController.searchResultsTableView reloadData];
+                [self.tableView reloadData];
             }
         });
     });
 }
 
+#pragma mark - UISearchControllerDelegate
+
+- (void)willPresentSearchController:(UISearchController *)searchController
+{
+    self.isPresentingSearch = YES;
+}
+
+- (void)didPresentSearchController:(UISearchController *)searchController
+{
+    self.isPresentingSearch = NO;
+}
+
+- (void)willDismissSearchController:(UISearchController *)searchController
+{
+    [self.tableView reloadData];
+}
+
 @end

Classes/Network/FLEXNetworkRecorder.h

@@ -27,10 +27,13 @@ extern NSString *const kFLEXNetworkRecorderTransactionsClearedNotification;
 /// If NO, the recorder not cache will not cache response for content types with an "image", "video", or "audio" prefix.
 @property (nonatomic, assign) BOOL shouldCacheMediaResponses;
 
+@property (nonatomic, copy) NSArray<NSString *> *hostBlacklist;
+
+
 // Accessing recorded network activity
 
 /// Array of FLEXNetworkTransaction objects ordered by start time with the newest first.
-- (NSArray *)networkTransactions;
+- (NSArray<FLEXNetworkTransaction *> *)networkTransactions;
 
 /// The full response data IFF it hasn't been purged due to memory pressure.
 - (NSData *)cachedResponseBodyForTransaction:(FLEXNetworkTransaction *)transaction;

Classes/Network/FLEXNetworkRecorder.m

@@ -7,6 +7,7 @@
 //
 
 #import "FLEXNetworkRecorder.h"
+#import "FLEXNetworkCurlLogger.h"
 #import "FLEXNetworkTransaction.h"
 #import "FLEXUtility.h"
 #import "FLEXResources.h"
@@ -21,8 +22,8 @@ NSString *const kFLEXNetworkRecorderResponseCacheLimitDefaultsKey = @"com.flex.r
 @interface FLEXNetworkRecorder ()
 
 @property (nonatomic, strong) NSCache *responseCache;
-@property (nonatomic, strong) NSMutableArray *orderedTransactions;
-@property (nonatomic, strong) NSMutableDictionary *networkTransactionsForRequestIdentifiers;
+@property (nonatomic, strong) NSMutableArray<FLEXNetworkTransaction *> *orderedTransactions;
+@property (nonatomic, strong) NSMutableDictionary<NSString *, FLEXNetworkTransaction *> *networkTransactionsForRequestIdentifiers;
 @property (nonatomic, strong) dispatch_queue_t queue;
 
 @end
@@ -73,9 +74,9 @@ NSString *const kFLEXNetworkRecorderResponseCacheLimitDefaultsKey = @"com.flex.r
     [[NSUserDefaults standardUserDefaults] setObject:@(responseCacheByteLimit) forKey:kFLEXNetworkRecorderResponseCacheLimitDefaultsKey];
 }
 
-- (NSArray *)networkTransactions
+- (NSArray<FLEXNetworkTransaction *> *)networkTransactions
 {
-    __block NSArray *transactions = nil;
+    __block NSArray<FLEXNetworkTransaction *> *transactions = nil;
     dispatch_sync(self.queue, ^{
         transactions = [self.orderedTransactions copy];
     });
@@ -103,6 +104,12 @@ NSString *const kFLEXNetworkRecorderResponseCacheLimitDefaultsKey = @"com.flex.r
 
 - (void)recordRequestWillBeSentWithRequestID:(NSString *)requestID request:(NSURLRequest *)request redirectResponse:(NSURLResponse *)redirectResponse
 {
+    for (NSString *host in self.hostBlacklist) {
+        if ([request.URL.host hasSuffix:host]) {
+            return;
+        }
+    }
+    
     NSDate *startDate = [NSDate date];
 
     if (redirectResponse) {
@@ -129,7 +136,7 @@ NSString *const kFLEXNetworkRecorderResponseCacheLimitDefaultsKey = @"com.flex.r
     NSDate *responseDate = [NSDate date];
 
     dispatch_async(self.queue, ^{
-        FLEXNetworkTransaction *transaction = [self.networkTransactionsForRequestIdentifiers objectForKey:requestID];
+        FLEXNetworkTransaction *transaction = self.networkTransactionsForRequestIdentifiers[requestID];
         if (!transaction) {
             return;
         }
@@ -144,7 +151,7 @@ NSString *const kFLEXNetworkRecorderResponseCacheLimitDefaultsKey = @"com.flex.r
 - (void)recordDataReceivedWithRequestID:(NSString *)requestID dataLength:(int64_t)dataLength
 {
     dispatch_async(self.queue, ^{
-        FLEXNetworkTransaction *transaction = [self.networkTransactionsForRequestIdentifiers objectForKey:requestID];
+        FLEXNetworkTransaction *transaction = self.networkTransactionsForRequestIdentifiers[requestID];
         if (!transaction) {
             return;
         }
@@ -159,7 +166,7 @@ NSString *const kFLEXNetworkRecorderResponseCacheLimitDefaultsKey = @"com.flex.r
     NSDate *finishedDate = [NSDate date];
 
     dispatch_async(self.queue, ^{
-        FLEXNetworkTransaction *transaction = [self.networkTransactionsForRequestIdentifiers objectForKey:requestID];
+        FLEXNetworkTransaction *transaction = self.networkTransactionsForRequestIdentifiers[requestID];
         if (!transaction) {
             return;
         }
@@ -168,7 +175,7 @@ NSString *const kFLEXNetworkRecorderResponseCacheLimitDefaultsKey = @"com.flex.r
 
         BOOL shouldCache = [responseBody length] > 0;
         if (!self.shouldCacheMediaResponses) {
-            NSArray *ignoredMIMETypePrefixes = @[ @"audio", @"image", @"video" ];
+            NSArray<NSString *> *ignoredMIMETypePrefixes = @[ @"audio", @"image", @"video" ];
             for (NSString *ignoredPrefix in ignoredMIMETypePrefixes) {
                 shouldCache = shouldCache && ![transaction.response.MIMEType hasPrefix:ignoredPrefix];
             }
@@ -215,7 +222,7 @@ NSString *const kFLEXNetworkRecorderResponseCacheLimitDefaultsKey = @"com.flex.r
 - (void)recordLoadingFailedWithRequestID:(NSString *)requestID error:(NSError *)error
 {
     dispatch_async(self.queue, ^{
-        FLEXNetworkTransaction *transaction = [self.networkTransactionsForRequestIdentifiers objectForKey:requestID];
+        FLEXNetworkTransaction *transaction = self.networkTransactionsForRequestIdentifiers[requestID];
         if (!transaction) {
             return;
         }
@@ -230,7 +237,7 @@ NSString *const kFLEXNetworkRecorderResponseCacheLimitDefaultsKey = @"com.flex.r
 - (void)recordMechanism:(NSString *)mechanism forRequestID:(NSString *)requestID
 {
     dispatch_async(self.queue, ^{
-        FLEXNetworkTransaction *transaction = [self.networkTransactionsForRequestIdentifiers objectForKey:requestID];
+        FLEXNetworkTransaction *transaction = self.networkTransactionsForRequestIdentifiers[requestID];
         if (!transaction) {
             return;
         }
@@ -245,7 +252,7 @@ NSString *const kFLEXNetworkRecorderResponseCacheLimitDefaultsKey = @"com.flex.r
 - (void)postNewTransactionNotificationWithTransaction:(FLEXNetworkTransaction *)transaction
 {
     dispatch_async(dispatch_get_main_queue(), ^{
-        NSDictionary *userInfo = @{ kFLEXNetworkRecorderUserInfoTransactionKey : transaction };
+        NSDictionary<NSString *, id> *userInfo = @{ kFLEXNetworkRecorderUserInfoTransactionKey : transaction };
         [[NSNotificationCenter defaultCenter] postNotificationName:kFLEXNetworkRecorderNewTransactionNotification object:self userInfo:userInfo];
     });
 }
@@ -253,7 +260,7 @@ NSString *const kFLEXNetworkRecorderResponseCacheLimitDefaultsKey = @"com.flex.r
 - (void)postUpdateNotificationForTransaction:(FLEXNetworkTransaction *)transaction
 {
     dispatch_async(dispatch_get_main_queue(), ^{
-        NSDictionary *userInfo = @{ kFLEXNetworkRecorderUserInfoTransactionKey : transaction };
+        NSDictionary<NSString *, id> *userInfo = @{ kFLEXNetworkRecorderUserInfoTransactionKey : transaction };
         [[NSNotificationCenter defaultCenter] postNotificationName:kFLEXNetworkRecorderTransactionUpdatedNotification object:self userInfo:userInfo];
     });
 }

Classes/Network/FLEXNetworkSettingsTableViewController.m

@@ -13,7 +13,7 @@
 
 @interface FLEXNetworkSettingsTableViewController () <UIActionSheetDelegate>
 
-@property (nonatomic, copy) NSArray *cells;
+@property (nonatomic, copy) NSArray<UITableViewCell *> *cells;
 
 @property (nonatomic, strong) UITableViewCell *cacheLimitCell;
 
@@ -34,14 +34,11 @@
 {
     [super viewDidLoad];
 
-    NSMutableArray *mutableCells = [NSMutableArray array];
+    NSMutableArray<UITableViewCell *> *mutableCells = [NSMutableArray array];
 
     UITableViewCell *networkDebuggingCell = [self switchCellWithTitle:@"Network Debugging" toggleAction:@selector(networkDebuggingToggled:) isOn:[FLEXNetworkObserver isEnabled]];
     [mutableCells addObject:networkDebuggingCell];
 
-    UITableViewCell *enableOnLaunchCell = [self switchCellWithTitle:@"Enable on Launch" toggleAction:@selector(enableOnLaunchToggled:) isOn:[FLEXNetworkObserver shouldEnableOnLaunch]];
-    [mutableCells addObject:enableOnLaunchCell];
-
     UITableViewCell *cacheMediaResponsesCell = [self switchCellWithTitle:@"Cache Media Responses" toggleAction:@selector(cacheMediaResponsesToggled:) isOn:NO];
     [mutableCells addObject:cacheMediaResponsesCell];
 
@@ -64,11 +61,6 @@
     [FLEXNetworkObserver setEnabled:sender.isOn];
 }
 
-- (void)enableOnLaunchToggled:(UISwitch *)sender
-{
-    [FLEXNetworkObserver setShouldEnableOnLaunch:sender.isOn];
-}
-
 - (void)cacheMediaResponsesToggled:(UISwitch *)sender
 {
     [[FLEXNetworkRecorder defaultRecorder] setShouldCacheMediaResponses:sender.isOn];
@@ -100,7 +92,7 @@
 
 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
 {
-    return [self.cells objectAtIndex:indexPath.row];
+    return self.cells[indexPath.row];
 }
 
 #pragma mark - UIActionSheetDelegate
@@ -144,7 +136,7 @@
     if (isDestructive) {
         actionButton.tintColor = [UIColor redColor];
     }
-    actionButton.titleLabel.font = [[self class] cellTitleFont];;
+    actionButton.titleLabel.font = [[self class] cellTitleFont];
     [actionButton addTarget:self action:@selector(clearRequestsTapped:) forControlEvents:UIControlEventTouchUpInside];
 
     [buttonCell.contentView addSubview:actionButton];

Classes/Network/FLEXNetworkTransaction.h

@@ -36,6 +36,9 @@ typedef NS_ENUM(NSInteger, FLEXNetworkTransactionState) {
 /// Only applicable for image downloads. A small thumbnail to preview the full response.
 @property (nonatomic, strong) UIImage *responseThumbnail;
 
+/// Populated lazily. Handles both normal HTTPBody data and HTTPBodyStreams.
+@property (nonatomic, strong, readonly) NSData *cachedRequestBody;
+
 + (NSString *)readableStringFromTransactionState:(FLEXNetworkTransactionState)state;
 
 @end

Classes/Network/FLEXNetworkTransaction.m

@@ -8,6 +8,12 @@
 
 #import "FLEXNetworkTransaction.h"
 
+@interface FLEXNetworkTransaction ()
+
+@property (nonatomic, strong, readwrite) NSData *cachedRequestBody;
+
+@end
+
 @implementation FLEXNetworkTransaction
 
 - (NSString *)description
@@ -22,6 +28,28 @@
     return description;
 }
 
+- (NSData *)cachedRequestBody {
+    if (!_cachedRequestBody) {
+        if (self.request.HTTPBody != nil) {
+            _cachedRequestBody = self.request.HTTPBody;
+        } else if ([self.request.HTTPBodyStream conformsToProtocol:@protocol(NSCopying)]) {
+            NSInputStream *bodyStream = [self.request.HTTPBodyStream copy];
+            const NSUInteger bufferSize = 1024;
+            uint8_t buffer[bufferSize];
+            NSMutableData *data = [NSMutableData data];
+            [bodyStream open];
+            NSInteger readBytes = 0;
+            do {
+                readBytes = [bodyStream read:buffer maxLength:bufferSize];
+                [data appendBytes:buffer length:readBytes];
+            } while (readBytes > 0);
+            [bodyStream close];
+            _cachedRequestBody = data;
+        }
+    }
+    return _cachedRequestBody;
+}
+
 + (NSString *)readableStringFromTransactionState:(FLEXNetworkTransactionState)state
 {
     NSString *readableString = nil;

Classes/Network/FLEXNetworkTransactionDetailTableViewController.m

@@ -7,23 +7,14 @@
 //
 
 #import "FLEXNetworkTransactionDetailTableViewController.h"
+#import "FLEXNetworkCurlLogger.h"
 #import "FLEXNetworkRecorder.h"
 #import "FLEXNetworkTransaction.h"
 #import "FLEXWebViewController.h"
 #import "FLEXImagePreviewViewController.h"
 #import "FLEXMultilineTableViewCell.h"
 #import "FLEXUtility.h"
-
-@interface FLEXNetworkDetailSection : NSObject
-
-@property (nonatomic, copy) NSString *title;
-@property (nonatomic, copy) NSArray *rows;
-
-@end
-
-@implementation FLEXNetworkDetailSection
-
-@end
+#import "FLEXManager+Private.h"
 
 typedef UIViewController *(^FLEXNetworkDetailRowSelectionFuture)(void);
 
@@ -39,9 +30,20 @@ typedef UIViewController *(^FLEXNetworkDetailRowSelectionFuture)(void);
 
 @end
 
+@interface FLEXNetworkDetailSection : NSObject
+
+@property (nonatomic, copy) NSString *title;
+@property (nonatomic, copy) NSArray<FLEXNetworkDetailRow *> *rows;
+
+@end
+
+@implementation FLEXNetworkDetailSection
+
+@end
+
 @interface FLEXNetworkTransactionDetailTableViewController ()
 
-@property (nonatomic, copy) NSArray *sections;
+@property (nonatomic, copy) NSArray<FLEXNetworkDetailSection *> *sections;
 
 @end
 
@@ -53,7 +55,7 @@ typedef UIViewController *(^FLEXNetworkDetailRowSelectionFuture)(void);
     self = [super initWithStyle:UITableViewStyleGrouped];
     if (self) {
         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleTransactionUpdatedNotification:) name:kFLEXNetworkRecorderTransactionUpdatedNotification object:nil];
-        self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Copy" style:UIBarButtonItemStylePlain target:self action:@selector(copyButtonPressed:)];
+        self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Copy curl" style:UIBarButtonItemStylePlain target:self action:@selector(copyButtonPressed:)];
     }
     return self;
 }
@@ -74,7 +76,7 @@ typedef UIViewController *(^FLEXNetworkDetailRowSelectionFuture)(void);
     }
 }
 
-- (void)setSections:(NSArray *)sections
+- (void)setSections:(NSArray<FLEXNetworkDetailSection *> *)sections
 {
     if (![_sections isEqual:sections]) {
         _sections = [sections copy];
@@ -84,7 +86,7 @@ typedef UIViewController *(^FLEXNetworkDetailRowSelectionFuture)(void);
 
 - (void)rebuildTableSections
 {
-    NSMutableArray *sections = [NSMutableArray array];
+    NSMutableArray<FLEXNetworkDetailSection *> *sections = [NSMutableArray array];
 
     FLEXNetworkDetailSection *generalSection = [[self class] generalSectionForTransaction:self.transaction];
     if ([generalSection.rows count] > 0) {
@@ -120,26 +122,7 @@ typedef UIViewController *(^FLEXNetworkDetailRowSelectionFuture)(void);
 
 - (void)copyButtonPressed:(id)sender
 {
-    NSMutableString *requestDetailString = [NSMutableString string];
-
-    for (FLEXNetworkDetailSection *section in self.sections) {
-        if ([section.rows count] > 0) {
-            if ([section.title length] > 0) {
-                [requestDetailString appendString:section.title];
-                [requestDetailString appendString:@"\n\n"];
-            }
-            for (FLEXNetworkDetailRow *row in section.rows) {
-                NSString *rowDescription = [[[self class] attributedTextForRow:row] string];
-                if ([rowDescription length] > 0) {
-                    [requestDetailString appendString:rowDescription];
-                    [requestDetailString appendString:@"\n"];
-                }
-            }
-            [requestDetailString appendString:@"\n\n"];
-        }
-    }
-
-    [[UIPasteboard generalPasteboard] setString:requestDetailString];
+    [[UIPasteboard generalPasteboard] setString:[FLEXNetworkCurlLogger curlCommandString:_transaction.request]];
 }
 
 #pragma mark - Table view data source
@@ -151,13 +134,13 @@ typedef UIViewController *(^FLEXNetworkDetailRowSelectionFuture)(void);
 
 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
 {
-    FLEXNetworkDetailSection *sectionModel = [self.sections objectAtIndex:section];
+    FLEXNetworkDetailSection *sectionModel = self.sections[section];
     return [sectionModel.rows count];
 }
 
 - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
 {
-    FLEXNetworkDetailSection *sectionModel = [self.sections objectAtIndex:section];
+    FLEXNetworkDetailSection *sectionModel = self.sections[section];
     return sectionModel.title;
 }
 
@@ -200,8 +183,8 @@ typedef UIViewController *(^FLEXNetworkDetailRowSelectionFuture)(void);
 
 - (FLEXNetworkDetailRow *)rowModelAtIndexPath:(NSIndexPath *)indexPath
 {
-    FLEXNetworkDetailSection *sectionModel = [self.sections objectAtIndex:indexPath.section];
-    return [sectionModel.rows objectAtIndex:indexPath.row];
+    FLEXNetworkDetailSection *sectionModel = self.sections[indexPath.section];
+    return sectionModel.rows[indexPath.row];
 }
 
 #pragma mark - Cell Copying
@@ -228,10 +211,10 @@ typedef UIViewController *(^FLEXNetworkDetailRowSelectionFuture)(void);
 
 + (NSAttributedString *)attributedTextForRow:(FLEXNetworkDetailRow *)row
 {
-    NSDictionary *titleAttributes = @{ NSFontAttributeName : [UIFont fontWithName:@"HelveticaNeue-Medium" size:12.0],
-                                       NSForegroundColorAttributeName : [UIColor colorWithWhite:0.5 alpha:1.0] };
-    NSDictionary *detailAttributes = @{ NSFontAttributeName : [FLEXUtility defaultTableViewCellLabelFont],
-                                        NSForegroundColorAttributeName : [UIColor blackColor] };
+    NSDictionary<NSString *, id> *titleAttributes = @{ NSFontAttributeName : [UIFont fontWithName:@"HelveticaNeue-Medium" size:12.0],
+                                                       NSForegroundColorAttributeName : [UIColor colorWithWhite:0.5 alpha:1.0] };
+    NSDictionary<NSString *, id> *detailAttributes = @{ NSFontAttributeName : [FLEXUtility defaultTableViewCellLabelFont],
+                                                        NSForegroundColorAttributeName : [UIColor blackColor] };
 
     NSString *title = [NSString stringWithFormat:@"%@: ", row.title];
     NSString *detailText = row.detailText ?: @"";
@@ -246,7 +229,7 @@ typedef UIViewController *(^FLEXNetworkDetailRowSelectionFuture)(void);
 
 + (FLEXNetworkDetailSection *)generalSectionForTransaction:(FLEXNetworkTransaction *)transaction
 {
-    NSMutableArray *rows = [NSMutableArray array];
+    NSMutableArray<FLEXNetworkDetailRow *> *rows = [NSMutableArray array];
 
     FLEXNetworkDetailRow *requestURLRow = [[FLEXNetworkDetailRow alloc] init];
     requestURLRow.title = @"Request URL";
@@ -264,10 +247,10 @@ typedef UIViewController *(^FLEXNetworkDetailRowSelectionFuture)(void);
     requestMethodRow.detailText = transaction.request.HTTPMethod;
     [rows addObject:requestMethodRow];
 
-    if ([transaction.request.HTTPBody length] > 0) {
+    if ([transaction.cachedRequestBody length] > 0) {
         FLEXNetworkDetailRow *postBodySizeRow = [[FLEXNetworkDetailRow alloc] init];
         postBodySizeRow.title = @"Request Body Size";
-        postBodySizeRow.detailText = [NSByteCountFormatter stringFromByteCount:[transaction.request.HTTPBody length] countStyle:NSByteCountFormatterCountStyleBinary];
+        postBodySizeRow.detailText = [NSByteCountFormatter stringFromByteCount:[transaction.cachedRequestBody length] countStyle:NSByteCountFormatterCountStyleBinary];
         [rows addObject:postBodySizeRow];
 
         FLEXNetworkDetailRow *postBodyRow = [[FLEXNetworkDetailRow alloc] init];
@@ -396,7 +379,7 @@ typedef UIViewController *(^FLEXNetworkDetailRowSelectionFuture)(void);
 {
     FLEXNetworkDetailSection *postBodySection = [[FLEXNetworkDetailSection alloc] init];
     postBodySection.title = @"Request Body Parameters";
-    if ([transaction.request.HTTPBody length] > 0) {
+    if ([transaction.cachedRequestBody length] > 0) {
         NSString *contentType = [transaction.request valueForHTTPHeaderField:@"Content-Type"];
         if ([contentType hasPrefix:@"application/x-www-form-urlencoded"]) {
             NSString *bodyString = [[NSString alloc] initWithData:[self postBodyDataForTransaction:transaction] encoding:NSUTF8StringEncoding];
@@ -408,7 +391,7 @@ typedef UIViewController *(^FLEXNetworkDetailRowSelectionFuture)(void);
 
 + (FLEXNetworkDetailSection *)queryParametersSectionForTransaction:(FLEXNetworkTransaction *)transaction
 {
-    NSDictionary *queryDictionary = [FLEXUtility dictionaryFromQuery:transaction.request.URL.query];
+    NSDictionary<NSString *, id> *queryDictionary = [FLEXUtility dictionaryFromQuery:transaction.request.URL.query];
     FLEXNetworkDetailSection *querySection = [[FLEXNetworkDetailSection alloc] init];
     querySection.title = @"Query Parameters";
     querySection.rows = [self networkDetailRowsFromDictionary:queryDictionary];
@@ -427,12 +410,12 @@ typedef UIViewController *(^FLEXNetworkDetailRowSelectionFuture)(void);
     return responseHeadersSection;
 }
 
-+ (NSArray *)networkDetailRowsFromDictionary:(NSDictionary *)dictionary
++ (NSArray<FLEXNetworkDetailRow *> *)networkDetailRowsFromDictionary:(NSDictionary<NSString *, id> *)dictionary
 {
-    NSMutableArray *rows = [NSMutableArray arrayWithCapacity:[dictionary count]];
-    NSArray *sortedKeys = [[dictionary allKeys] sortedArrayUsingSelector:@selector(caseInsensitiveCompare:)];
+    NSMutableArray<FLEXNetworkDetailRow *> *rows = [NSMutableArray arrayWithCapacity:[dictionary count]];
+    NSArray<NSString *> *sortedKeys = [[dictionary allKeys] sortedArrayUsingSelector:@selector(caseInsensitiveCompare:)];
     for (NSString *key in sortedKeys) {
-        NSString *value = [dictionary objectForKey:key];
+        id value = dictionary[key];
         FLEXNetworkDetailRow *row = [[FLEXNetworkDetailRow alloc] init];
         row.title = key;
         row.detailText = [value description];
@@ -443,6 +426,16 @@ typedef UIViewController *(^FLEXNetworkDetailRowSelectionFuture)(void);
 
 + (UIViewController *)detailViewControllerForMIMEType:(NSString *)mimeType data:(NSData *)data
 {
+    FLEXCustomContentViewerFuture makeCustomViewer = [FLEXManager sharedManager].customContentTypeViewers[mimeType.lowercaseString];
+
+    if (makeCustomViewer) {
+        UIViewController *viewer = makeCustomViewer(data);
+
+        if (viewer) {
+            return viewer;
+        }
+    }
+
     // FIXME (RKO): Don't rely on UTF8 string encoding
     UIViewController *detailViewController = nil;
     if ([FLEXUtility isValidJSONData:data]) {
@@ -470,7 +463,7 @@ typedef UIViewController *(^FLEXNetworkDetailRowSelectionFuture)(void);
 
 + (NSData *)postBodyDataForTransaction:(FLEXNetworkTransaction *)transaction
 {
-    NSData *bodyData = transaction.request.HTTPBody;
+    NSData *bodyData = transaction.cachedRequestBody;
     if ([bodyData length] > 0) {
         NSString *contentEncoding = [transaction.request valueForHTTPHeaderField:@"Content-Encoding"];
         if ([contentEncoding rangeOfString:@"deflate" options:NSCaseInsensitiveSearch].length > 0 || [contentEncoding rangeOfString:@"gzip" options:NSCaseInsensitiveSearch].length > 0) {

Classes/Network/FLEXNetworkTransactionTableViewCell.m

@@ -79,7 +79,7 @@ NSString *const kFLEXNetworkTransactionCellIdentifier = @"kFLEXNetworkTransactio
     self.nameLabel.text = [self nameLabelText];
     CGSize nameLabelPreferredSize = [self.nameLabel sizeThatFits:CGSizeMake(availableTextWidth, CGFLOAT_MAX)];
     self.nameLabel.frame = CGRectMake(textOriginX, kVerticalPadding, availableTextWidth, nameLabelPreferredSize.height);
-    self.nameLabel.textColor = self.transaction.error ? [UIColor redColor] : [UIColor blackColor];
+    self.nameLabel.textColor = (self.transaction.error || [FLEXUtility isErrorStatusCodeFromURLResponse:self.transaction.response]) ? [UIColor redColor] : [UIColor blackColor];
 
     self.pathLabel.text = [self pathLabelText];
     CGSize pathLabelPreferredSize = [self.pathLabel sizeThatFits:CGSizeMake(availableTextWidth, CGFLOAT_MAX)];
@@ -111,7 +111,7 @@ NSString *const kFLEXNetworkTransactionCellIdentifier = @"kFLEXNetworkTransactio
 - (NSString *)pathLabelText
 {
     NSURL *url = self.transaction.request.URL;
-    NSMutableArray *mutablePathComponents = [[url pathComponents] mutableCopy];
+    NSMutableArray<NSString *> *mutablePathComponents = [[url pathComponents] mutableCopy];
     if ([mutablePathComponents count] > 0) {
         [mutablePathComponents removeLastObject];
     }
@@ -124,14 +124,16 @@ NSString *const kFLEXNetworkTransactionCellIdentifier = @"kFLEXNetworkTransactio
 
 - (NSString *)transactionDetailsLabelText
 {
-    NSMutableArray *detailComponents = [NSMutableArray array];
+    NSMutableArray<NSString *> *detailComponents = [NSMutableArray array];
 
     NSString *timestamp = [[self class] timestampStringFromRequestDate:self.transaction.startTime];
-    [detailComponents addObject:timestamp];
+    if ([timestamp length] > 0) {
+        [detailComponents addObject:timestamp];
+    }
 
     // Omit method for GET (assumed as default)
     NSString *httpMethod = self.transaction.request.HTTPMethod;
-    if (httpMethod) {
+    if ([httpMethod length] > 0) {
         [detailComponents addObject:httpMethod];
     }
 

Classes/Network/PonyDebugger/FLEXNetworkObserver.h

@@ -14,7 +14,7 @@
 
 #import <Foundation/Foundation.h>
 
-extern NSString *const kFLEXNetworkObserverEnabledStateChangedNotification;
+FOUNDATION_EXTERN NSString *const kFLEXNetworkObserverEnabledStateChangedNotification;
 
 /// This class swizzles NSURLConnection and NSURLSession delegate methods to observe events in the URL loading system.
 /// High level network events are sent to the default FLEXNetworkRecorder instance which maintains the request history and caches response bodies.
@@ -22,12 +22,8 @@ extern NSString *const kFLEXNetworkObserverEnabledStateChangedNotification;
 
 /// Swizzling occurs when the observer is enabled for the first time.
 /// This reduces the impact of FLEX if network debugging is not desired.
+/// NOTE: this setting persists between launches of the app.
 + (void)setEnabled:(BOOL)enabled;
 + (BOOL)isEnabled;
 
-/// The enable on launch setting is persisted accross launches of the app.
-/// If YES, the observer will automatically enable itself early in the application lifecycle.
-+ (void)setShouldEnableOnLaunch:(BOOL)shouldEnableOnLaunch;
-+ (BOOL)shouldEnableOnLaunch;
-
 @end

Classes/Network/PonyDebugger/FLEXNetworkObserver.m

@@ -14,13 +14,14 @@
 
 #import "FLEXNetworkObserver.h"
 #import "FLEXNetworkRecorder.h"
+#import "FLEXUtility.h"
 
 #import <objc/runtime.h>
 #import <objc/message.h>
 #import <dispatch/queue.h>
 
 NSString *const kFLEXNetworkObserverEnabledStateChangedNotification = @"kFLEXNetworkObserverEnabledStateChangedNotification";
-static NSString *const kFLEXNetworkObserverEnableOnLaunchDefaultsKey = @"com.flex.FLEXNetworkObserver.enableOnLaunch";
+static NSString *const kFLEXNetworkObserverEnabledDefaultsKey = @"com.flex.FLEXNetworkObserver.enableOnLaunch";
 
 typedef void (^NSURLSessionAsyncCompletion)(id fileURLOrData, NSURLResponse *response, NSError *error);
 
@@ -67,8 +68,7 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
 
 @interface FLEXNetworkObserver ()
 
-@property (nonatomic, assign, getter=isEnabled) BOOL enabled;
-@property (nonatomic, strong) NSMutableDictionary *requestStatesForRequestIDs;
+@property (nonatomic, strong) NSMutableDictionary<NSString *, FLEXInternalRequestState *> *requestStatesForRequestIDs;
 @property (nonatomic, strong) dispatch_queue_t queue;
 
 @end
@@ -79,43 +79,32 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
 
 + (void)setEnabled:(BOOL)enabled
 {
+    BOOL previouslyEnabled = [self isEnabled];
+    
+    [[NSUserDefaults standardUserDefaults] setBool:enabled forKey:kFLEXNetworkObserverEnabledDefaultsKey];
+    
     if (enabled) {
         // Inject if needed. This injection is protected with a dispatch_once, so we're ok calling it multiple times.
         // By doing the injection lazily, we keep the impact of the tool lower when this feature isn't enabled.
         [self injectIntoAllNSURLConnectionDelegateClasses];
     }
-    [[self sharedObserver] setEnabled:enabled];
-}
-
-+ (BOOL)isEnabled
-{
-    return [[self sharedObserver] isEnabled];
-}
-
-- (void)setEnabled:(BOOL)enabled
-{
-    if (_enabled != enabled) {
-        _enabled = enabled;
+    
+    if (previouslyEnabled != enabled) {
         [[NSNotificationCenter defaultCenter] postNotificationName:kFLEXNetworkObserverEnabledStateChangedNotification object:self];
     }
 }
 
-+ (void)setShouldEnableOnLaunch:(BOOL)shouldEnableOnLaunch
++ (BOOL)isEnabled
 {
-    [[NSUserDefaults standardUserDefaults] setBool:shouldEnableOnLaunch forKey:kFLEXNetworkObserverEnableOnLaunchDefaultsKey];
-}
-
-+ (BOOL)shouldEnableOnLaunch
-{
-    return [[[NSUserDefaults standardUserDefaults] objectForKey:kFLEXNetworkObserverEnableOnLaunchDefaultsKey] boolValue];
+    return [[[NSUserDefaults standardUserDefaults] objectForKey:kFLEXNetworkObserverEnabledDefaultsKey] boolValue];
 }
 
 + (void)load
 {
     // We don't want to do the swizzling from +load because not all the classes may be loaded at this point.
     dispatch_async(dispatch_get_main_queue(), ^{
-        if ([self shouldEnableOnLaunch]) {
-            [self setEnabled:YES];
+        if ([self isEnabled]) {
+            [self injectIntoAllNSURLConnectionDelegateClasses];
         }
     });
 }
@@ -139,11 +128,6 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
 
 #pragma mark Delegate Injection Convenience Methods
 
-+ (SEL)swizzledSelectorForSelector:(SEL)selector
-{
-    return NSSelectorFromString([NSString stringWithFormat:@"_flex_swizzle_%x_%@", arc4random(), NSStringFromSelector(selector)]);
-}
-
 /// All swizzled delegate methods should make use of this guard.
 /// This will prevent duplicated sniffing when the original implementation calls up to a superclass implementation which we've also swizzled.
 /// The superclass implementation (and implementations in classes above that) will be executed without inteference if called from the original implementation.
@@ -170,66 +154,6 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
     objc_setAssociatedObject(object, key, nil, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
 }
 
-+ (BOOL)instanceRespondsButDoesNotImplementSelector:(SEL)selector class:(Class)cls
-{
-    if ([cls instancesRespondToSelector:selector]) {
-        unsigned int numMethods = 0;
-        Method *methods = class_copyMethodList(cls, &numMethods);
-        
-        BOOL implementsSelector = NO;
-        for (int index = 0; index < numMethods; index++) {
-            SEL methodSelector = method_getName(methods[index]);
-            if (selector == methodSelector) {
-                implementsSelector = YES;
-                break;
-            }
-        }
-        
-        free(methods);
-        
-        if (!implementsSelector) {
-            return YES;
-        }
-    }
-    
-    return NO;
-}
-
-+ (void)replaceImplementationOfKnownSelector:(SEL)originalSelector onClass:(Class)class withBlock:(id)block swizzledSelector:(SEL)swizzledSelector
-{
-    // This method is only intended for swizzling methods that are know to exist on the class.
-    // Bail if that isn't the case.
-    Method originalMethod = class_getInstanceMethod(class, originalSelector);
-    if (!originalMethod) {
-        return;
-    }
-
-    IMP implementation = imp_implementationWithBlock(block);
-    class_addMethod(class, swizzledSelector, implementation, method_getTypeEncoding(originalMethod));
-    Method newMethod = class_getInstanceMethod(class, swizzledSelector);
-    method_exchangeImplementations(originalMethod, newMethod);
-}
-
-+ (void)replaceImplementationOfSelector:(SEL)selector withSelector:(SEL)swizzledSelector forClass:(Class)cls withMethodDescription:(struct objc_method_description)methodDescription implementationBlock:(id)implementationBlock undefinedBlock:(id)undefinedBlock
-{
-    if ([self instanceRespondsButDoesNotImplementSelector:selector class:cls]) {
-        return;
-    }
-
-    IMP implementation = imp_implementationWithBlock((id)([cls instancesRespondToSelector:selector] ? implementationBlock : undefinedBlock));
-    
-    Method oldMethod = class_getInstanceMethod(cls, selector);
-    if (oldMethod) {
-        class_addMethod(cls, swizzledSelector, implementation, methodDescription.types);
-         
-        Method newMethod = class_getInstanceMethod(cls, swizzledSelector);
-        
-        method_exchangeImplementations(oldMethod, newMethod);
-    } else {
-        class_addMethod(cls, selector, implementation, methodDescription.types);
-    }
-}
-
 #pragma mark - Delegate Injection
 
 + (void)injectIntoAllNSURLConnectionDelegateClasses
@@ -248,7 +172,7 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
             @selector(URLSession:dataTask:didReceiveData:),
             @selector(URLSession:dataTask:didReceiveResponse:completionHandler:),
             @selector(URLSession:task:didCompleteWithError:),
-            @selector(URLSession:dataTask:didBecomeDownloadTask:delegate:),
+            @selector(URLSession:dataTask:didBecomeDownloadTask:),
             @selector(URLSession:downloadTask:didWriteData:totalBytesWritten:totalBytesExpectedToWrite:),
             @selector(URLSession:downloadTask:didFinishDownloadingToURL:)
         };
@@ -333,7 +257,7 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
     dispatch_once(&onceToken, ^{
         Class class = [NSURLConnection class];
         SEL selector = @selector(cancel);
-        SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+        SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
         Method originalCancel = class_getInstanceMethod(class, selector);
 
         void (^swizzleBlock)(NSURLConnection *) = ^(NSURLConnection *slf) {
@@ -352,14 +276,19 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
 {
     static dispatch_once_t onceToken;
     dispatch_once(&onceToken, ^{
-        Class class = [NSURLSessionTask class];
-        SEL selector = @selector(resume);
-        SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
-
-        if ([self instanceRespondsButDoesNotImplementSelector:selector class:class]) {
-            // Dummy NSURLSessionTask to get the actual class, needed for iOS 7 (__NSCFURLSessionTask)
-            class = [[[NSURLSession sharedSession] dataTaskWithURL:[NSURL URLWithString:@"about:blank"]] superclass];
+        // In iOS 7 resume lives in __NSCFLocalSessionTask
+        // In iOS 8 resume lives in NSURLSessionTask
+        // In iOS 9 resume lives in __NSCFURLSessionTask
+        Class class = Nil;
+        if (![[NSProcessInfo processInfo] respondsToSelector:@selector(operatingSystemVersion)]) {
+            class = NSClassFromString([@[@"__", @"NSC", @"FLocalS", @"ession", @"Task"] componentsJoinedByString:@""]);
+        } else if ([[NSProcessInfo processInfo] operatingSystemVersion].majorVersion < 9) {
+            class = [NSURLSessionTask class];
+        } else {
+            class = NSClassFromString([@[@"__", @"NSC", @"FURLS", @"ession", @"Task"] componentsJoinedByString:@""]);
         }
+        SEL selector = @selector(resume);
+        SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
 
         Method originalResume = class_getInstanceMethod(class, selector);
 
@@ -381,7 +310,7 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
     dispatch_once(&onceToken, ^{
         Class class = objc_getMetaClass(class_getName([NSURLConnection class]));
         SEL selector = @selector(sendAsynchronousRequest:queue:completionHandler:);
-        SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+        SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
 
         typedef void (^NSURLConnectionAsyncCompletion)(NSURLResponse* response, NSData* data, NSError* connectionError);
 
@@ -389,7 +318,7 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
             if ([FLEXNetworkObserver isEnabled]) {
                 NSString *requestID = [self nextRequestID];
                 [[FLEXNetworkRecorder defaultRecorder] recordRequestWillBeSentWithRequestID:requestID request:request redirectResponse:nil];
-                NSString *mechanism = [self mechansimFromClassMethod:selector onClass:class];
+                NSString *mechanism = [self mechanismFromClassMethod:selector onClass:class];
                 [[FLEXNetworkRecorder defaultRecorder] recordMechanism:mechanism forRequestID:requestID];
                 NSURLConnectionAsyncCompletion completionWrapper = ^(NSURLResponse *response, NSData *data, NSError *connectionError) {
                     [[FLEXNetworkRecorder defaultRecorder] recordResponseReceivedWithRequestID:requestID response:response];
@@ -411,7 +340,7 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
             }
         };
         
-        [self replaceImplementationOfKnownSelector:selector onClass:class withBlock:asyncSwizzleBlock swizzledSelector:swizzledSelector];
+        [FLEXUtility replaceImplementationOfKnownSelector:selector onClass:class withBlock:asyncSwizzleBlock swizzledSelector:swizzledSelector];
     });
 }
 
@@ -421,14 +350,14 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
     dispatch_once(&onceToken, ^{
         Class class = objc_getMetaClass(class_getName([NSURLConnection class]));
         SEL selector = @selector(sendSynchronousRequest:returningResponse:error:);
-        SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+        SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
 
         NSData *(^syncSwizzleBlock)(Class, NSURLRequest *, NSURLResponse **, NSError **) = ^NSData *(Class slf, NSURLRequest *request, NSURLResponse **response, NSError **error) {
             NSData *data = nil;
             if ([FLEXNetworkObserver isEnabled]) {
                 NSString *requestID = [self nextRequestID];
                 [[FLEXNetworkRecorder defaultRecorder] recordRequestWillBeSentWithRequestID:requestID request:request redirectResponse:nil];
-                NSString *mechanism = [self mechansimFromClassMethod:selector onClass:class];
+                NSString *mechanism = [self mechanismFromClassMethod:selector onClass:class];
                 [[FLEXNetworkRecorder defaultRecorder] recordMechanism:mechanism forRequestID:requestID];
                 NSError *temporaryError = nil;
                 NSURLResponse *temporaryResponse = nil;
@@ -453,7 +382,7 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
             return data;
         };
         
-        [self replaceImplementationOfKnownSelector:selector onClass:class withBlock:syncSwizzleBlock swizzledSelector:swizzledSelector];
+        [FLEXUtility replaceImplementationOfKnownSelector:selector onClass:class withBlock:syncSwizzleBlock swizzledSelector:swizzledSelector];
     });
 }
 
@@ -465,7 +394,6 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
 
         // The method signatures here are close enough that we can use the same logic to inject into all of them.
         const SEL selectors[] = {
-            @selector(dataTaskWithHTTPGetRequest:completionHandler:),
             @selector(dataTaskWithRequest:completionHandler:),
             @selector(dataTaskWithURL:completionHandler:),
             @selector(downloadTaskWithRequest:completionHandler:),
@@ -477,9 +405,9 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
 
         for (int selectorIndex = 0; selectorIndex < numSelectors; selectorIndex++) {
             SEL selector = selectors[selectorIndex];
-            SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+            SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
 
-            if ([self instanceRespondsButDoesNotImplementSelector:selector class:class]) {
+            if ([FLEXUtility instanceRespondsButDoesNotImplementSelector:selector class:class]) {
                 // iOS 7 does not implement these methods on NSURLSession. We actually want to
                 // swizzle __NSCFURLSession, which we can get from the class of the shared session
                 class = [[NSURLSession sharedSession] class];
@@ -492,7 +420,7 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
                 // with nil completion block.
                 if ([FLEXNetworkObserver isEnabled] && completion) {
                     NSString *requestID = [self nextRequestID];
-                    NSString *mechanism = [self mechansimFromClassMethod:selector onClass:class];
+                    NSString *mechanism = [self mechanismFromClassMethod:selector onClass:class];
                     NSURLSessionAsyncCompletion completionWrapper = [self asyncCompletionWrapperForRequestID:requestID mechanism:mechanism completion:completion];
                     task = ((id(*)(id, SEL, id, id))objc_msgSend)(slf, swizzledSelector, argument, completionWrapper);
                     [self setRequestID:requestID forConnectionOrTask:task];
@@ -502,7 +430,7 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
                 return task;
             };
             
-            [self replaceImplementationOfKnownSelector:selector onClass:class withBlock:asyncDataOrDownloadSwizzleBlock swizzledSelector:swizzledSelector];
+            [FLEXUtility replaceImplementationOfKnownSelector:selector onClass:class withBlock:asyncDataOrDownloadSwizzleBlock swizzledSelector:swizzledSelector];
         }
     });
 }
@@ -524,9 +452,9 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
 
         for (int selectorIndex = 0; selectorIndex < numSelectors; selectorIndex++) {
             SEL selector = selectors[selectorIndex];
-            SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+            SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
 
-            if ([self instanceRespondsButDoesNotImplementSelector:selector class:class]) {
+            if ([FLEXUtility instanceRespondsButDoesNotImplementSelector:selector class:class]) {
                 // iOS 7 does not implement these methods on NSURLSession. We actually want to
                 // swizzle __NSCFURLSession, which we can get from the class of the shared session
                 class = [[NSURLSession sharedSession] class];
@@ -534,9 +462,9 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
 
             NSURLSessionUploadTask *(^asyncUploadTaskSwizzleBlock)(Class, NSURLRequest *, id, NSURLSessionAsyncCompletion) = ^NSURLSessionUploadTask *(Class slf, NSURLRequest *request, id argument, NSURLSessionAsyncCompletion completion) {
                 NSURLSessionUploadTask *task = nil;
-                if ([FLEXNetworkObserver isEnabled]) {
+                if ([FLEXNetworkObserver isEnabled] && completion) {
                     NSString *requestID = [self nextRequestID];
-                    NSString *mechanism = [self mechansimFromClassMethod:selector onClass:class];
+                    NSString *mechanism = [self mechanismFromClassMethod:selector onClass:class];
                     NSURLSessionAsyncCompletion completionWrapper = [self asyncCompletionWrapperForRequestID:requestID mechanism:mechanism completion:completion];
                     task = ((id(*)(id, SEL, id, id, id))objc_msgSend)(slf, swizzledSelector, request, argument, completionWrapper);
                     [self setRequestID:requestID forConnectionOrTask:task];
@@ -546,12 +474,12 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
                 return task;
             };
             
-            [self replaceImplementationOfKnownSelector:selector onClass:class withBlock:asyncUploadTaskSwizzleBlock swizzledSelector:swizzledSelector];
+            [FLEXUtility replaceImplementationOfKnownSelector:selector onClass:class withBlock:asyncUploadTaskSwizzleBlock swizzledSelector:swizzledSelector];
         }
     });
 }
 
-+ (NSString *)mechansimFromClassMethod:(SEL)selector onClass:(Class)class
++ (NSString *)mechanismFromClassMethod:(SEL)selector onClass:(Class)class
 {
     return [NSString stringWithFormat:@"+[%@ %@]", NSStringFromClass(class), NSStringFromSelector(selector)];
 }
@@ -585,7 +513,7 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
 + (void)injectWillSendRequestIntoDelegateClass:(Class)cls
 {
     SEL selector = @selector(connection:willSendRequest:redirectResponse:);
-    SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+    SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
     
     Protocol *protocol = @protocol(NSURLConnectionDataDelegate);
     if (!protocol) {
@@ -611,13 +539,13 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
         return returnValue;
     };
     
-    [self replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
+    [FLEXUtility replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
 }
 
 + (void)injectDidReceiveResponseIntoDelegateClass:(Class)cls
 {
     SEL selector = @selector(connection:didReceiveResponse:);
-    SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+    SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
     
     Protocol *protocol = @protocol(NSURLConnectionDataDelegate);
     if (!protocol) {
@@ -640,13 +568,13 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
         }];
     };
     
-    [self replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
+    [FLEXUtility replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
 }
 
 + (void)injectDidReceiveDataIntoDelegateClass:(Class)cls
 {
     SEL selector = @selector(connection:didReceiveData:);
-    SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+    SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
     
     Protocol *protocol = @protocol(NSURLConnectionDataDelegate);
     if (!protocol) {
@@ -669,13 +597,13 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
         }];
     };
     
-    [self replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
+    [FLEXUtility replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
 }
 
 + (void)injectDidFinishLoadingIntoDelegateClass:(Class)cls
 {
     SEL selector = @selector(connectionDidFinishLoading:);
-    SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+    SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
     
     Protocol *protocol = @protocol(NSURLConnectionDataDelegate);
     if (!protocol) {
@@ -698,13 +626,13 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
         }];
     };
     
-    [self replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
+    [FLEXUtility replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
 }
 
 + (void)injectDidFailWithErrorIntoDelegateClass:(Class)cls
 {
     SEL selector = @selector(connection:didFailWithError:);
-    SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+    SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
     
     Protocol *protocol = @protocol(NSURLConnectionDelegate);
     struct objc_method_description methodDescription = protocol_getMethodDescription(protocol, selector, NO, YES);
@@ -723,13 +651,13 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
         }];
     };
     
-    [self replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
+    [FLEXUtility replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
 }
 
 + (void)injectTaskWillPerformHTTPRedirectionIntoDelegateClass:(Class)cls
 {
     SEL selector = @selector(URLSession:task:willPerformHTTPRedirection:newRequest:completionHandler:);
-    SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+    SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
 
     Protocol *protocol = @protocol(NSURLSessionTaskDelegate);
 
@@ -739,24 +667,25 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
     
     NSURLSessionWillPerformHTTPRedirectionBlock undefinedBlock = ^(id <NSURLSessionTaskDelegate> slf, NSURLSession *session, NSURLSessionTask *task, NSHTTPURLResponse *response, NSURLRequest *newRequest, void(^completionHandler)(NSURLRequest *)) {
         [[FLEXNetworkObserver sharedObserver] URLSession:session task:task willPerformHTTPRedirection:response newRequest:newRequest completionHandler:completionHandler delegate:slf];
+        completionHandler(newRequest);
     };
 
     NSURLSessionWillPerformHTTPRedirectionBlock implementationBlock = ^(id <NSURLSessionTaskDelegate> slf, NSURLSession *session, NSURLSessionTask *task, NSHTTPURLResponse *response, NSURLRequest *newRequest, void(^completionHandler)(NSURLRequest *)) {
         [self sniffWithoutDuplicationForObject:session selector:selector sniffingBlock:^{
-            undefinedBlock(slf, session, task, response, newRequest, completionHandler);
+            [[FLEXNetworkObserver sharedObserver] URLSession:session task:task willPerformHTTPRedirection:response newRequest:newRequest completionHandler:completionHandler delegate:slf];
         } originalImplementationBlock:^{
-            ((id(*)(id, SEL, id, id, id, id, void(^)()))objc_msgSend)(slf, swizzledSelector, session, task, response, newRequest, completionHandler);
+            ((id(*)(id, SEL, id, id, id, id, void(^)(NSURLRequest *)))objc_msgSend)(slf, swizzledSelector, session, task, response, newRequest, completionHandler);
         }];
     };
 
-    [self replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
+    [FLEXUtility replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
 
 }
 
 + (void)injectTaskDidReceiveDataIntoDelegateClass:(Class)cls
 {
     SEL selector = @selector(URLSession:dataTask:didReceiveData:);
-    SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+    SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
     
     Protocol *protocol = @protocol(NSURLSessionDataDelegate);
     
@@ -776,14 +705,14 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
         }];
     };
     
-    [self replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
+    [FLEXUtility replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
 
 }
 
 + (void)injectDataTaskDidBecomeDownloadTaskIntoDelegateClass:(Class)cls
 {
     SEL selector = @selector(URLSession:dataTask:didBecomeDownloadTask:);
-    SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+    SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
 
     Protocol *protocol = @protocol(NSURLSessionDataDelegate);
 
@@ -803,13 +732,13 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
         }];
     };
 
-    [self replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
+    [FLEXUtility replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
 }
 
 + (void)injectTaskDidReceiveResponseIntoDelegateClass:(Class)cls
 {
     SEL selector = @selector(URLSession:dataTask:didReceiveResponse:completionHandler:);
-    SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+    SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
     
     Protocol *protocol = @protocol(NSURLSessionDataDelegate);
     
@@ -819,24 +748,25 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
     
     NSURLSessionDidReceiveResponseBlock undefinedBlock = ^(id <NSURLSessionDelegate> slf, NSURLSession *session, NSURLSessionDataTask *dataTask, NSURLResponse *response, void(^completionHandler)(NSURLSessionResponseDisposition disposition)) {
         [[FLEXNetworkObserver sharedObserver] URLSession:session dataTask:dataTask didReceiveResponse:response completionHandler:completionHandler delegate:slf];
+        completionHandler(NSURLSessionResponseAllow);
     };
     
     NSURLSessionDidReceiveResponseBlock implementationBlock = ^(id <NSURLSessionDelegate> slf, NSURLSession *session, NSURLSessionDataTask *dataTask, NSURLResponse *response, void(^completionHandler)(NSURLSessionResponseDisposition disposition)) {
         [self sniffWithoutDuplicationForObject:session selector:selector sniffingBlock:^{
-            undefinedBlock(slf, session, dataTask, response, completionHandler);
+            [[FLEXNetworkObserver sharedObserver] URLSession:session dataTask:dataTask didReceiveResponse:response completionHandler:completionHandler delegate:slf];
         } originalImplementationBlock:^{
-            ((void(*)(id, SEL, id, id, id, void(^)()))objc_msgSend)(slf, swizzledSelector, session, dataTask, response, completionHandler);
+            ((void(*)(id, SEL, id, id, id, void(^)(NSURLSessionResponseDisposition)))objc_msgSend)(slf, swizzledSelector, session, dataTask, response, completionHandler);
         }];
     };
     
-    [self replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
+    [FLEXUtility replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
 
 }
 
 + (void)injectTaskDidCompleteWithErrorIntoDelegateClass:(Class)cls
 {
     SEL selector = @selector(URLSession:task:didCompleteWithError:);
-    SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+    SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
     
     Protocol *protocol = @protocol(NSURLSessionTaskDelegate);
     struct objc_method_description methodDescription = protocol_getMethodDescription(protocol, selector, NO, YES);
@@ -855,21 +785,19 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
         }];
     };
 
-    [self replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
+    [FLEXUtility replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
 }
 
 // Used for overriding AFNetworking behavior
 + (void)injectRespondsToSelectorIntoDelegateClass:(Class)cls
 {
     SEL selector = @selector(respondsToSelector:);
-    SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+    SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
 
     //Protocol *protocol = @protocol(NSURLSessionTaskDelegate);
     Method method = class_getInstanceMethod(cls, selector);
     struct objc_method_description methodDescription = *method_getDescription(method);
 
-    typedef void (^NSURLSessionTaskDidCompleteWithErrorBlock)(id slf, SEL sel);
-
     BOOL (^undefinedBlock)(id <NSURLSessionTaskDelegate>, SEL) = ^(id slf, SEL sel) {
         return YES;
     };
@@ -881,14 +809,14 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
         return ((BOOL(*)(id, SEL, SEL))objc_msgSend)(slf, swizzledSelector, sel);
     };
 
-    [self replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
+    [FLEXUtility replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
 }
 
 
 + (void)injectDownloadTaskDidFinishDownloadingIntoDelegateClass:(Class)cls
 {
     SEL selector = @selector(URLSession:downloadTask:didFinishDownloadingToURL:);
-    SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+    SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
 
     Protocol *protocol = @protocol(NSURLSessionDownloadDelegate);
     struct objc_method_description methodDescription = protocol_getMethodDescription(protocol, selector, NO, YES);
@@ -908,13 +836,13 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
         }];
     };
 
-    [self replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
+    [FLEXUtility replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
 }
 
 + (void)injectDownloadTaskDidWriteDataIntoDelegateClass:(Class)cls
 {
     SEL selector = @selector(URLSession:downloadTask:didWriteData:totalBytesWritten:totalBytesExpectedToWrite:);
-    SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+    SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
 
     Protocol *protocol = @protocol(NSURLSessionDownloadDelegate);
     struct objc_method_description methodDescription = protocol_getMethodDescription(protocol, selector, NO, YES);
@@ -933,7 +861,7 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
         }];
     };
 
-    [self replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
+    [FLEXUtility replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
 
 }
 
@@ -970,14 +898,14 @@ static char const * const kFLEXRequestIDKey = "kFLEXRequestIDKey";
 
 - (void)performBlock:(dispatch_block_t)block
 {
-    if (self.isEnabled) {
+    if ([[self class] isEnabled]) {
         dispatch_async(_queue, block);
     }
 }
 
 - (FLEXInternalRequestState *)requestStateForRequestID:(NSString *)requestID
 {
-    FLEXInternalRequestState *requestState = [self.requestStatesForRequestIDs objectForKey:requestID];
+    FLEXInternalRequestState *requestState = self.requestStatesForRequestIDs[requestID];
     if (!requestState) {
         requestState = [[FLEXInternalRequestState alloc] init];
         [self.requestStatesForRequestIDs setObject:requestState forKey:requestID];
@@ -1016,7 +944,7 @@ static char const * const kFLEXRequestIDKey = "kFLEXRequestIDKey";
         NSMutableData *dataAccumulator = nil;
         if (response.expectedContentLength < 0) {
             dataAccumulator = [[NSMutableData alloc] init];
-        } else {
+        } else if (response.expectedContentLength < 52428800) {
             dataAccumulator = [[NSMutableData alloc] initWithCapacity:(NSUInteger)response.expectedContentLength];
         }
         requestState.dataAccumulator = dataAccumulator;
@@ -1067,7 +995,7 @@ static char const * const kFLEXRequestIDKey = "kFLEXRequestIDKey";
 {
     [self performBlock:^{
         // Mimic the behavior of NSURLSession which is to create an error on cancellation.
-        NSDictionary *userInfo = @{ NSLocalizedDescriptionKey : @"cancelled" };
+        NSDictionary<NSString *, id> *userInfo = @{ NSLocalizedDescriptionKey : @"cancelled" };
         NSError *error = [NSError errorWithDomain:NSURLErrorDomain code:NSURLErrorCancelled userInfo:userInfo];
         [self connection:connection didFailWithError:error delegate:nil];
     }];
@@ -1154,7 +1082,8 @@ static char const * const kFLEXRequestIDKey = "kFLEXRequestIDKey";
         FLEXInternalRequestState *requestState = [self requestStateForRequestID:requestID];
 
         if (!requestState.dataAccumulator) {
-            requestState.dataAccumulator = [[NSMutableData alloc] initWithCapacity:(NSUInteger)totalBytesExpectedToWrite];
+            NSUInteger unsignedBytesExpectedToWrite = totalBytesExpectedToWrite > 0 ? (NSUInteger)totalBytesExpectedToWrite : 0;
+            requestState.dataAccumulator = [[NSMutableData alloc] initWithCapacity:unsignedBytesExpectedToWrite];
             [[FLEXNetworkRecorder defaultRecorder] recordResponseReceivedWithRequestID:requestID response:downloadTask.response];
 
             NSString *requestMechanism = [NSString stringWithFormat:@"NSURLSessionDownloadTask (delegate: %@)", [delegate class]];

Classes/ObjectExplorers/FLEXArrayExplorerViewController.m

@@ -72,7 +72,7 @@
 - (id)detailObjectForRowCookie:(id)rowCookie
 {
     NSUInteger index = [rowCookie unsignedIntegerValue];
-    return [self.array objectAtIndex:index];
+    return self.array[index];
 }
 
 @end

Classes/ObjectExplorers/FLEXClassExplorerViewController.m

@@ -35,11 +35,11 @@ typedef NS_ENUM(NSUInteger, FLEXClassExplorerRow) {
 
 #pragma mark - Superclass Overrides
 
-- (NSArray *)possibleExplorerSections
+- (NSArray<NSNumber *> *)possibleExplorerSections
 {
     // Move class methods to between our custom section and the properties section since
     // we are more interested in the class sections than in the instance level sections.
-    NSMutableArray *mutableSections = [[super possibleExplorerSections] mutableCopy];
+    NSMutableArray<NSNumber *> *mutableSections = [[super possibleExplorerSections] mutableCopy];
     [mutableSections removeObject:@(FLEXObjectExplorerSectionClassMethods)];
     [mutableSections insertObject:@(FLEXObjectExplorerSectionClassMethods) atIndex:[mutableSections indexOfObject:@(FLEXObjectExplorerSectionProperties)]];
     return mutableSections;

Classes/ObjectExplorers/FLEXColorExplorerViewController.h

@@ -0,0 +1,13 @@
+//
+//  FLEXColorExplorerViewController.h
+//  Flipboard
+//
+//  Created by Tanner on 10/18/18.
+//  Copyright © 2018 Flipboard. All rights reserved.
+//
+
+#import "FLEXObjectExplorerViewController.h"
+
+@interface FLEXColorExplorerViewController : FLEXObjectExplorerViewController
+
+@end

Classes/ObjectExplorers/FLEXColorExplorerViewController.m

@@ -0,0 +1,49 @@
+//
+//  FLEXColorExplorerViewController.m
+//  Flipboard
+//
+//  Created by Tanner on 10/18/18.
+//  Copyright © 2018 Flipboard. All rights reserved.
+//
+
+#import "FLEXColorExplorerViewController.h"
+
+@interface FLEXColorExplorerViewController ()
+
+@end
+
+@implementation FLEXColorExplorerViewController
+
+- (BOOL)shouldShowDescription
+{
+    return NO;
+}
+
+- (NSString *)customSectionTitle
+{
+    return @"Color";
+}
+
+- (NSArray *)customSectionRowCookies
+{
+    return @[@0];
+}
+
+- (UIView *)customViewForRowCookie:(id)rowCookie
+{
+    CGFloat width = [UIScreen mainScreen].bounds.size.width;
+    UIView *square = [[UIView alloc] initWithFrame:CGRectMake(0, 0, width, 44)];
+    square.backgroundColor = (UIColor *)self.object;
+    return square;
+}
+
+//- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
+//    UITableViewCell *cell = [super tableView:tableView cellForRowAtIndexPath:indexPath];
+//    if (indexPath.section == 0 && indexPath.row == 0) {
+//        cell.contentView.backgroundColor = (UIColor *)self.object;
+//    }
+//
+//    return cell;
+//}
+
+@end

Classes/ObjectExplorers/FLEXDictionaryExplorerViewController.m

@@ -43,7 +43,7 @@
 
 - (NSString *)customSectionSubtitleForRowCookie:(id)rowCookie
 {
-    return [FLEXRuntimeUtility descriptionForIvarOrPropertyValue:[self.dictionary objectForKey:rowCookie]];
+    return [FLEXRuntimeUtility descriptionForIvarOrPropertyValue:self.dictionary[rowCookie]];
 }
 
 - (BOOL)customSectionCanDrillIntoRowWithCookie:(id)rowCookie
@@ -53,7 +53,7 @@
 
 - (UIViewController *)customSectionDrillInViewControllerForRowCookie:(id)rowCookie
 {
-    return [FLEXObjectExplorerFactory explorerViewControllerForObject:[self.dictionary objectForKey:rowCookie]];
+    return [FLEXObjectExplorerFactory explorerViewControllerForObject:self.dictionary[rowCookie]];
 }
 
 - (BOOL)shouldShowDescription

Classes/ObjectExplorers/FLEXGlobalsTableViewControllerEntry.h

@@ -1,6 +1,6 @@
 //
 //  FLEXGlobalsTableViewControllerEntry.h
-//  UICatalog
+//  FLEX
 //
 //  Created by Javier Soto on 7/26/14.
 //  Copyright (c) 2014 f. All rights reserved.