Fix #168 by restructuring try-catch branching

#178 made methods with no arguments appear to take one argument by forcibly returning the selector name as the only argument. This is not desired behavior. Updating the test to reflect desired behavior reveals this.

This commit makes this method return an empty array when selectors consist of one component, and does some housekeeping on the tests added in #178.

.travis.yml

@@ -1,8 +1,12 @@
 language: objective-c
 xcode_workspace: FLEX.xcworkspace
+xcode_sdk: iphonesimulator
+before_install:
+    - gem install xcpretty
 matrix:
     include:
         - xcode_scheme: UICatalog
-          xcode_sdk: iphonesimulator
         - xcode_scheme: FLEX
-          xcode_sdk: iphonesimulator
+script:
+    - set -o pipefail
+    - xcodebuild -workspace $TRAVIS_XCODE_WORKSPACE -scheme $TRAVIS_XCODE_SCHEME -sdk $TRAVIS_XCODE_SDK build | xcpretty

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.m

@@ -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/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];
@@ -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/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

@@ -9,14 +9,13 @@
 #import "FLEXMethodCallingViewController.h"
 #import "FLEXRuntimeUtility.h"
 #import "FLEXFieldEditorView.h"
-#import "FLEXObjectExplorerFactory.h"
-#import "FLEXObjectExplorerViewController.h"
 #import "FLEXArgumentInputView.h"
 #import "FLEXArgumentInputViewFactory.h"
 
 @interface FLEXMethodCallingViewController ()
 
 @property (nonatomic, assign) Method method;
+@property (nonatomic, assign) FLEXTypeEncoding *returnType;
 
 @end
 
@@ -27,7 +26,8 @@
     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 +36,14 @@
 {
     [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 +58,12 @@
     self.fieldEditorView.argumentInputViews = argumentInputViews;
 }
 
+- (void)dealloc
+{
+    free(self.returnType);
+    self.returnType = NULL;
+}
+
 - (BOOL)isClassMethod
 {
     return self.target && self.target == [self.target class];
@@ -86,14 +96,8 @@
         NSString *message = [error localizedDescription];
         UIAlertView *alert = [[UIAlertView alloc] initWithTitle:title message:message delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
         [alert show];
-    } else if (returnedObject) {
-        // For non-nil (or void) return types, push an explorer view controller to display the returned object
-        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

@@ -17,6 +17,12 @@
 - (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;

Classes/ExplorerInterface/FLEXExplorerViewController.m

@@ -16,6 +16,8 @@
 #import "FLEXObjectExplorerFactory.h"
 #import "FLEXNetworkHistoryTableViewController.h"
 
+static NSString *const kFLEXToolbarTopMarginDefaultsKey = @"com.flex.FLEXToolbar.topMargin";
+
 typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
     FLEXExplorerModeDefault,
     FLEXExplorerModeSelect,
@@ -43,10 +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;
@@ -66,7 +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
 
@@ -94,10 +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];
@@ -165,32 +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
@@ -206,7 +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) {
@@ -232,7 +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) {
@@ -262,7 +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;
                 }
@@ -270,7 +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;
                 }
@@ -311,9 +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));
@@ -322,7 +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];
 }
@@ -376,10 +380,10 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
     [self toggleViewsTool];
 }
 
-- (NSArray *)allViewsInHierarchy
+- (NSArray<UIView *> *)allViewsInHierarchy
 {
-    NSMutableArray *allViews = [NSMutableArray array];
-    NSArray *windows = [FLEXUtility allWindows];
+    NSMutableArray<UIView *> *allViews = [NSMutableArray array];
+    NSArray<UIWindow *> *windows = [FLEXUtility allWindows];
     for (UIWindow *window in windows) {
         if (window != self.view.window) {
             [allViews addObject:window];
@@ -462,14 +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
@@ -526,8 +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];
@@ -555,16 +569,16 @@ 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];
+    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]) {
@@ -594,9 +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) {
@@ -618,9 +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]];
@@ -628,9 +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;
@@ -674,6 +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
@@ -712,7 +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]) {
@@ -792,6 +833,15 @@ 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
@@ -814,49 +864,32 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
 
 - (void)toggleViewsTool
 {
-    BOOL viewsModalShown = [[self presentedViewController] isKindOfClass:[UINavigationController class]];
-    viewsModalShown = viewsModalShown && [[[(UINavigationController *)[self presentedViewController] viewControllers] firstObject] isKindOfClass:[FLEXHierarchyTableViewController class]];
-    if (viewsModalShown) {
-        [self resignKeyAndDismissViewControllerAnimated:YES completion:nil];
-    } else {
-        void (^presentBlock)() = ^{
-            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];
-        };
-        
-        if (self.presentedViewController) {
-            [self resignKeyAndDismissViewControllerAnimated:NO completion:presentBlock];
-        } else {
-            presentBlock();
+    [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
 {
-    BOOL menuModalShown = [[self presentedViewController] isKindOfClass:[UINavigationController class]];
-    menuModalShown = menuModalShown && [[[(UINavigationController *)[self presentedViewController] viewControllers] firstObject] isKindOfClass:[FLEXGlobalsTableViewController class]];
-    if (menuModalShown) {
-        [self resignKeyAndDismissViewControllerAnimated:YES completion:nil];
-    } else {
-        void (^presentBlock)() = ^{
-            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];
-        };
-        
-        if (self.presentedViewController) {
-            [self resignKeyAndDismissViewControllerAnimated:NO completion:presentBlock];
-        } else {
-            presentBlock();
-        }
-    }
+    [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

Classes/FLEXManager.h

@@ -9,6 +9,8 @@
 #import <Foundation/Foundation.h>
 #import <UIKit/UIKit.h>
 
+typedef UIViewController *(^FLEXCustomContentViewerFuture)(NSData *data);
+
 @interface FLEXManager : NSObject
 
 + (instancetype)sharedManager;
@@ -30,6 +32,12 @@
 /// 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.
@@ -49,6 +57,10 @@
 
 #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.
@@ -67,4 +79,13 @@
 - (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

@@ -19,8 +19,8 @@
 - (instancetype)initWithPath:(NSString*)path;
 
 - (BOOL)open;
-- (NSArray *)queryAllTables;
-- (NSArray *)queryAllColumnsWithTableName:(NSString *)tableName;
-- (NSArray *)queryAllDataWithTableName:(NSString *)tableName;
+- (NSArray<NSDictionary<NSString *, id> *> *)queryAllTables;
+- (NSArray<NSString *> *)queryAllColumnsWithTableName:(NSString *)tableName;
+- (NSArray<NSDictionary<NSString *, id> *> *)queryAllDataWithTableName:(NSString *)tableName;
 
 @end

Classes/GlobalStateExplorers/DatabaseBrowser/FLEXMultiColumnTableView.m

@@ -19,7 +19,7 @@
 @property (nonatomic, strong) UITableView  *contentTableView;
 @property (nonatomic, strong) UIView       *leftHeader;
 
-@property (nonatomic, strong) NSDictionary *sortStatusDict;
+@property (nonatomic, strong) NSDictionary<NSString *, NSNumber *> *sortStatusDict;
 @property (nonatomic, strong) NSArray *rowData;
 @end
 
@@ -135,7 +135,7 @@ static const CGFloat kColumnMargin = 1;
 
 - (void)loadHeaderData
 {
-    NSArray *subviews = self.headerScrollView.subviews;
+    NSArray<UIView *> *subviews = self.headerScrollView.subviews;
     
     for (UIView *subview in subviews) {
         [subview removeFromSuperview];

Classes/GlobalStateExplorers/DatabaseBrowser/FLEXRealmDatabaseManager.m

@@ -18,7 +18,7 @@
 @interface FLEXRealmDatabaseManager ()
 
 @property (nonatomic, copy) NSString *path;
-@property (nonatomic, strong) id realm;
+@property (nonatomic, strong) RLMRealm * realm;
 
 @end
 
@@ -57,9 +57,9 @@
     return (error == nil);
 }
 
-- (NSArray *)queryAllTables
+- (NSArray<NSDictionary<NSString *, id> *> *)queryAllTables
 {
-    NSMutableArray *allTables = [NSMutableArray array];
+    NSMutableArray<NSDictionary<NSString *, id> *> *allTables = [NSMutableArray array];
     RLMSchema *schema = [self.realm schema];
     
     for (RLMObjectSchema *objectSchema in schema.objectSchema) {
@@ -67,21 +67,21 @@
             continue;
         }
         
-        NSDictionary *dictionary = @{@"name":objectSchema.className};
+        NSDictionary<NSString *, id> *dictionary = @{@"name":objectSchema.className};
         [allTables addObject:dictionary];
     }
     
     return allTables;
 }
 
-- (NSArray *)queryAllColumnsWithTableName:(NSString *)tableName
+- (NSArray<NSString *> *)queryAllColumnsWithTableName:(NSString *)tableName
 {
     RLMObjectSchema *objectSchema = [[self.realm schema] schemaForClassName:tableName];
     if (objectSchema == nil) {
         return nil;
     }
     
-    NSMutableArray *columnNames = [NSMutableArray array];
+    NSMutableArray<NSString *> *columnNames = [NSMutableArray array];
     for (RLMProperty *property in objectSchema.properties) {
         [columnNames addObject:property.name];
     }
@@ -89,7 +89,7 @@
     return columnNames;
 }
 
-- (NSArray *)queryAllDataWithTableName:(NSString *)tableName
+- (NSArray<NSDictionary<NSString *, id> *> *)queryAllDataWithTableName:(NSString *)tableName
 {
     RLMObjectSchema *objectSchema = [[self.realm schema] schemaForClassName:tableName];
     RLMResults *results = [self.realm allObjects:tableName];
@@ -97,9 +97,9 @@
         return nil;
     }
     
-    NSMutableArray *allDataEntries = [NSMutableArray array];
+    NSMutableArray<NSDictionary<NSString *, id> *> *allDataEntries = [NSMutableArray array];
     for (RLMObject *result in results) {
-        NSMutableDictionary *entry = [NSMutableDictionary dictionary];
+        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];

Classes/GlobalStateExplorers/DatabaseBrowser/FLEXRealmDefines.h

@@ -22,13 +22,13 @@
 @end
 
 @interface RLMSchema : NSObject
-@property (nonatomic, readonly) NSArray *objectSchema;
+@property (nonatomic, readonly) NSArray<RLMObjectSchema *> *objectSchema;
 - (RLMObjectSchema *)schemaForClassName:(NSString *)className;
 @end
 
 @interface RLMObjectSchema : NSObject
 @property (nonatomic, readonly) NSString *className;
-@property (nonatomic, readonly) NSArray *properties;
+@property (nonatomic, readonly) NSArray<RLMProperty *> *properties;
 @end
 
 @interface RLMProperty : NSString
@@ -43,4 +43,4 @@
 
 @end
 
-#endif
+#endif

Classes/GlobalStateExplorers/DatabaseBrowser/FLEXSQLiteDatabaseManager.m

@@ -7,6 +7,7 @@
 //
 
 #import "FLEXSQLiteDatabaseManager.h"
+#import "FLEXManager.h"
 #import <sqlite3.h>
 
 
@@ -33,6 +34,17 @@ static NSString *const QUERY_TABLENAMES_SQL = @"SELECT name FROM sqlite_master W
         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;
@@ -74,23 +86,24 @@ static NSString *const QUERY_TABLENAMES_SQL = @"SELECT name FROM sqlite_master W
 }
 
 
-- (NSArray *)queryAllTables
+- (NSArray<NSDictionary<NSString *, id> *> *)queryAllTables
 {
     return [self executeQuery:QUERY_TABLENAMES_SQL];
 }
 
-- (NSArray *)queryAllColumnsWithTableName:(NSString *)tableName
+- (NSArray<NSString *> *)queryAllColumnsWithTableName:(NSString *)tableName
 {
     NSString *sql = [NSString stringWithFormat:@"PRAGMA table_info('%@')",tableName];
-    NSArray *resultArray =  [self executeQuery:sql];
-    NSMutableArray *array = [NSMutableArray array];
-    for (NSDictionary *dict in resultArray) {
-        [array addObject:dict[@"name"]];
+    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 *)queryAllDataWithTableName:(NSString *)tableName
+- (NSArray<NSDictionary<NSString *, id> *> *)queryAllDataWithTableName:(NSString *)tableName
 {
     NSString *sql = [NSString stringWithFormat:@"SELECT * FROM %@",tableName];
     return [self executeQuery:sql];
@@ -99,16 +112,16 @@ static NSString *const QUERY_TABLENAMES_SQL = @"SELECT name FROM sqlite_master W
 #pragma mark -
 #pragma mark - Private
 
-- (NSArray *)executeQuery:(NSString *)sql
+- (NSArray<NSDictionary<NSString *, id> *> *)executeQuery:(NSString *)sql
 {
     [self open];
-    NSMutableArray *resultArray = [NSMutableArray array];
+    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 *dict = [NSMutableDictionary dictionaryWithCapacity:num_cols];
+                NSMutableDictionary<NSString *, id> *dict = [NSMutableDictionary dictionaryWithCapacity:num_cols];
                 
                 int columnCount = sqlite3_column_count(pstmt);
                 

Classes/GlobalStateExplorers/DatabaseBrowser/FLEXTableContentCell.h

@@ -18,9 +18,9 @@
 
 @interface FLEXTableContentCell : UITableViewCell
 
-@property (nonatomic, strong)NSArray *labels;
+@property (nonatomic, strong) NSArray<UILabel *> *labels;
 
-@property (nonatomic, weak) id<FLEXTableContentCellDelegate>delegate;
+@property (nonatomic, weak) id<FLEXTableContentCellDelegate> delegate;
 
 + (instancetype)cellWithTableView:(UITableView *)tableView columnNumber:(NSInteger)number;
 

Classes/GlobalStateExplorers/DatabaseBrowser/FLEXTableContentCell.m

@@ -21,7 +21,7 @@
     FLEXTableContentCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier];
     if (!cell) {
         cell = [[FLEXTableContentCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier];
-        NSMutableArray *labels = [NSMutableArray array];
+        NSMutableArray<UILabel *> *labels = [NSMutableArray array];
         for (int i = 0; i < number ; i++) {
             UILabel *label = [[UILabel alloc] initWithFrame:CGRectZero];
             label.backgroundColor = [UIColor whiteColor];

Classes/GlobalStateExplorers/DatabaseBrowser/FLEXTableContentViewController.h

@@ -10,7 +10,7 @@
 
 @interface FLEXTableContentViewController : UIViewController
 
-@property (nonatomic, strong) NSArray *columnsArray;
-@property (nonatomic, strong) NSArray *contentsArray;
+@property (nonatomic, strong) NSArray<NSString *> *columnsArray;
+@property (nonatomic, strong) NSArray<NSDictionary<NSString *, id> *> *contentsArray;
 
 @end

Classes/GlobalStateExplorers/DatabaseBrowser/FLEXTableContentViewController.m

@@ -13,45 +13,39 @@
 
 @interface FLEXTableContentViewController ()<FLEXMultiColumnTableViewDataSource, FLEXMultiColumnTableViewDelegate>
 
-@property (nonatomic, strong)FLEXMultiColumnTableView *multiColumView;
+@property (nonatomic, strong) FLEXMultiColumnTableView *multiColumView;
 
 @end
 
 @implementation FLEXTableContentViewController
 
-- (instancetype)init
-{
-    self = [super init];
-    if (self) {
-        
-        CGRect rectStatus = [UIApplication sharedApplication].statusBarFrame;
-        CGFloat y = 64;
-        if (rectStatus.size.height == 0) {
-            y = 32;
-        }
-        _multiColumView = [[FLEXMultiColumnTableView alloc] initWithFrame:
-                           CGRectMake(0, y, self.view.frame.size.width, self.view.frame.size.height - y)];
-        
-        _multiColumView.autoresizingMask          = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
-        _multiColumView.backgroundColor           = [UIColor whiteColor];
-        _multiColumView.dataSource                = self;
-        _multiColumView.delegate                  = self;
-        self.automaticallyAdjustsScrollViewInsets = NO;
-        
-        
-        [self.view addSubview:_multiColumView];
-    }
-    return self;
+- (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
@@ -78,7 +72,7 @@
 - (NSString *)contentAtColumn:(NSInteger)column row:(NSInteger)row
 {
     if (self.contentsArray.count > row) {
-        NSDictionary *dic = self.contentsArray[row];
+        NSDictionary<NSString *, id> *dic = self.contentsArray[row];
         if (self.contentsArray.count > column) {
             return [NSString stringWithFormat:@"%@",[dic objectForKey:self.columnsArray[column]]];
         }
@@ -90,11 +84,11 @@
 {
     NSMutableArray *result = [NSMutableArray array];
     if (self.contentsArray.count > row) {
-        NSDictionary *dic = self.contentsArray[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 result;
     }
     return nil;
 }
@@ -119,7 +113,7 @@
 - (CGFloat)widthForLeftHeaderInTableView:(FLEXMultiColumnTableView *)tableView
 {
     NSString *str = [NSString stringWithFormat:@"%lu",(unsigned long)self.contentsArray.count];
-    NSDictionary *attrs = @{@"NSFontAttributeName":[UIFont systemFontOfSize:17.0]};
+    NSDictionary<NSString *, id> *attrs = @{@"NSFontAttributeName":[UIFont systemFontOfSize:17.0]};
     CGSize size =   [str boundingRectWithSize:CGSizeMake(CGFLOAT_MAX, 14)
                                       options:NSStringDrawingUsesLineFragmentOrigin
                                    attributes:attrs context:nil].size;
@@ -139,7 +133,7 @@
 - (void)multiColumnTableView:(FLEXMultiColumnTableView *)tableView didTapHeaderWithText:(NSString *)text sortType:(FLEXTableColumnHeaderSortType)sortType
 {
     
-    NSArray *sortContentData = [self.contentsArray sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {
+    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;
@@ -147,6 +141,11 @@
         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;
@@ -171,10 +170,10 @@
     [coordinator animateAlongsideTransition:^(id <UIViewControllerTransitionCoordinatorContext> context) {
         if (newCollection.verticalSizeClass == UIUserInterfaceSizeClassCompact) {
             
-            _multiColumView.frame = CGRectMake(0, 32, self.view.frame.size.width, self.view.frame.size.height - 32);
+            self->_multiColumView.frame = CGRectMake(0, 32, self.view.frame.size.width, self.view.frame.size.height - 32);
         }
         else {
-            _multiColumView.frame = CGRectMake(0, 64, self.view.frame.size.width, self.view.frame.size.height - 64);
+            self->_multiColumView.frame = CGRectMake(0, 64, self.view.frame.size.width, self.view.frame.size.height - 64);
         }
         [self.view setNeedsLayout];
     } completion:nil];

Classes/GlobalStateExplorers/DatabaseBrowser/FLEXTableListViewController.m

@@ -20,10 +20,10 @@
     NSString *_databasePath;
 }
 
-@property (nonatomic, strong) NSArray *tables;
+@property (nonatomic, strong) NSArray<NSString *> *tables;
 
-+ (NSArray *)supportedSQLiteExtensions;
-+ (NSArray *)supportedRealmExtensions;
++ (NSArray<NSString *> *)supportedSQLiteExtensions;
++ (NSArray<NSString *> *)supportedRealmExtensions;
 
 @end
 
@@ -45,12 +45,12 @@
 {
     NSString *pathExtension = path.pathExtension.lowercaseString;
     
-    NSArray *sqliteExtensions = [FLEXTableListViewController supportedSQLiteExtensions];
+    NSArray<NSString *> *sqliteExtensions = [FLEXTableListViewController supportedSQLiteExtensions];
     if ([sqliteExtensions indexOfObject:pathExtension] != NSNotFound) {
         return [[FLEXSQLiteDatabaseManager alloc] initWithPath:path];
     }
     
-    NSArray *realmExtensions = [FLEXTableListViewController supportedRealmExtensions];
+    NSArray<NSString *> *realmExtensions = [FLEXTableListViewController supportedRealmExtensions];
     if (realmExtensions != nil && [realmExtensions indexOfObject:pathExtension] != NSNotFound) {
         return [[FLEXRealmDatabaseManager alloc] initWithPath:path];
     }
@@ -60,10 +60,11 @@
 
 - (void)getAllTables
 {
-    NSArray *resultArray = [_dbm queryAllTables];
-    NSMutableArray *array = [NSMutableArray array];
-    for (NSDictionary *dict in resultArray) {
-        [array addObject:dict[@"name"]];
+    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;
 }
@@ -106,12 +107,12 @@
 {
     extension = extension.lowercaseString;
     
-    NSArray *sqliteExtensions = [FLEXTableListViewController supportedSQLiteExtensions];
+    NSArray<NSString *> *sqliteExtensions = [FLEXTableListViewController supportedSQLiteExtensions];
     if (sqliteExtensions.count > 0 && [sqliteExtensions indexOfObject:extension] != NSNotFound) {
         return YES;
     }
     
-    NSArray *realmExtensions = [FLEXTableListViewController supportedRealmExtensions];
+    NSArray<NSString *> *realmExtensions = [FLEXTableListViewController supportedRealmExtensions];
     if (realmExtensions.count > 0 && [realmExtensions indexOfObject:extension] != NSNotFound) {
         return YES;
     }
@@ -119,12 +120,12 @@
     return NO;
 }
 
-+ (NSArray *)supportedSQLiteExtensions
++ (NSArray<NSString *> *)supportedSQLiteExtensions
 {
     return @[@"db", @"sqlite", @"sqlite3"];
 }
 
-+ (NSArray *)supportedRealmExtensions
++ (NSArray<NSString *> *)supportedRealmExtensions
 {
     if (NSClassFromString(@"RLMRealm") == nil) {
         return nil;

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];

Classes/GlobalStateExplorers/FLEXCookiesTableViewController.m

@@ -12,7 +12,7 @@
 
 @interface FLEXCookiesTableViewController ()
 
-@property (nonatomic, strong) NSArray *cookies;
+@property (nonatomic, strong) NSArray<NSHTTPCookie *> *cookies;
 
 @end
 
@@ -25,7 +25,7 @@
         self.title = @"Cookies";
 
         NSSortDescriptor *nameSortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"name" ascending:YES selector:@selector(caseInsensitiveCompare:)];
-        _cookies =[[NSHTTPCookieStorage sharedHTTPCookieStorage].cookies sortedArrayUsingDescriptors:@[nameSortDescriptor]];
+        _cookies = [[NSHTTPCookieStorage sharedHTTPCookieStorage].cookies sortedArrayUsingDescriptors:@[nameSortDescriptor]];
     }
     
     return self;

Classes/GlobalStateExplorers/FLEXFileBrowserSearchOperation.h

@@ -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

@@ -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.m

@@ -19,8 +19,8 @@
 @interface FLEXFileBrowserTableViewController () <FLEXFileBrowserFileOperationControllerDelegate, FLEXFileBrowserSearchOperationDelegate, UISearchResultsUpdating, UISearchControllerDelegate>
 
 @property (nonatomic, copy) NSString *path;
-@property (nonatomic, copy) NSArray *childPaths;
-@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;
 @property (nonatomic, strong) UISearchController *searchController;
@@ -44,30 +44,30 @@
         self.path = path;
         self.title = [path lastPathComponent];
         self.operationQueue = [NSOperationQueue new];
-        
+
         self.searchController = [[UISearchController alloc] initWithSearchResultsController:nil];
         self.searchController.searchResultsUpdater = self;
         self.searchController.delegate = 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);
@@ -86,14 +86,11 @@
 {
     [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);
@@ -133,22 +130,22 @@
 {
     BOOL isSearchActive = self.searchController.isActive;
     NSNumber *currentSize = isSearchActive ? self.searchPathsSize : self.recursiveSize;
-    NSArray *currentPaths = isSearchActive ? self.searchPaths : self.childPaths;
-    
+    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 = [self filePathAtIndexPath:indexPath];
-    NSDictionary *attributes = [[NSFileManager defaultManager] attributesOfItemAtPath:fullPath error:NULL];
+    NSDictionary<NSString *, id> *attributes = [[NSFileManager defaultManager] attributesOfItemAtPath:fullPath error:NULL];
     BOOL isDirectory = [[attributes fileType] isEqual:NSFileTypeDirectory];
     NSString *subtitle = nil;
     if (isDirectory) {
@@ -158,15 +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];
@@ -177,12 +174,12 @@
     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;
 }
 
@@ -191,7 +188,7 @@
     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) {
@@ -212,7 +209,7 @@
                 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:pathExtension]) {
@@ -227,7 +224,7 @@
                 }
             }
         }
-        
+
         if (drillInViewController) {
             drillInViewController.title = [subpath lastPathComponent];
             [self.navigationController pushViewController:drillInViewController animated:YES];
@@ -243,12 +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
@@ -288,12 +298,21 @@
 {
     NSIndexPath *indexPath = [self.tableView indexPathForCell:sender];
     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) {
@@ -306,8 +325,8 @@
 
 - (void)reloadChildPaths
 {
-    NSMutableArray *childPaths = [NSMutableArray array];
-    NSArray *subpaths = [[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]];
     }
@@ -348,4 +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

@@ -33,6 +33,7 @@ typedef NS_ENUM(NSUInteger, FLEXGlobalsRow) {
     FLEXGlobalsRowAppDelegate,
     FLEXGlobalsRowRootViewController,
     FLEXGlobalsRowUserDefaults,
+    FLEXGlobalsRowMainBundle,
     FLEXGlobalsRowApplication,
     FLEXGlobalsRowKeyWindow,
     FLEXGlobalsRowMainScreen,
@@ -42,17 +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;
@@ -125,6 +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]";

Classes/GlobalStateExplorers/FLEXInstancesTableViewController.m

@@ -12,18 +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];
@@ -38,17 +69,21 @@
             }
         }
     }];
-    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;
@@ -62,8 +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;
                     }
                 }
@@ -71,11 +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;
 }
 
 
@@ -83,12 +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
@@ -103,26 +211,33 @@
         cell.detailTextLabel.font = cellFont;
         cell.detailTextLabel.textColor = [UIColor grayColor];
     }
-    
-    id instance = self.instances[indexPath.row];
-    NSString *title = nil;
-    if ((NSInteger)[self.fieldNames count] > indexPath.row) {
-        title = [NSString stringWithFormat:@"%@ %@", NSStringFromClass(object_getClass(instance)), self.fieldNames[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[indexPath.row];
+    id instance = self.instances[indexPath.row].object;
     FLEXObjectExplorerViewController *drillInViewController = [FLEXObjectExplorerFactory explorerViewControllerForObject:instance];
     [self.navigationController pushViewController:drillInViewController animated:YES];
 }

Classes/GlobalStateExplorers/FLEXLibrariesTableViewController.m

@@ -14,8 +14,8 @@
 
 @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;
@@ -52,7 +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];
@@ -76,14 +76,14 @@
 
 - (NSString *)shortNameForImageName:(NSString *)imageName
 {
-    NSArray *components = [imageName componentsSeparatedByString:@"/"];
+    NSArray<NSString *> *components = [imageName componentsSeparatedByString:@"/"];
     if (components.count >= 2) {
         return [NSString stringWithFormat:@"%@/%@", components[components.count - 2], components[components.count - 1]];
     }
     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) {

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[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[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;
@@ -159,6 +172,15 @@ static const NSInteger kFLEXLiveObjectsSortByCountIndex = 1;
             // 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];
@@ -190,7 +212,10 @@ static const NSInteger kFLEXLiveObjectsSortByCountIndex = 1;
     
     NSString *className = self.filteredClassNames[indexPath.row];
     NSNumber *count = self.instanceCountsForClassNames[className];
-    cell.textLabel.text = [NSString stringWithFormat:@"%@ (%ld)", className, (long)[count integerValue]];
+    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;
 }

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/FLEXSystemLogMessage.m

@@ -10,7 +10,7 @@
 
 @implementation FLEXSystemLogMessage
 
-+(instancetype)logMessageFromASLMessage:(aslmsg)aslMessage
++ (instancetype)logMessageFromASLMessage:(aslmsg)aslMessage
 {
     FLEXSystemLogMessage *logMessage = [[FLEXSystemLogMessage alloc] init];
 

Classes/GlobalStateExplorers/SystemLog/FLEXSystemLogTableViewCell.m

@@ -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.m

@@ -15,9 +15,10 @@
 @interface FLEXSystemLogTableViewController () <UISearchResultsUpdating, UISearchControllerDelegate>
 
 @property (nonatomic, strong) UISearchController *searchController;
-@property (nonatomic, copy) NSArray *logMessages;
-@property (nonatomic, copy) NSArray *filteredLogMessages;
+@property (nonatomic, readonly) NSMutableArray<FLEXSystemLogMessage *> *logMessages;
+@property (nonatomic, copy) NSArray<FLEXSystemLogMessage *> *filteredLogMessages;
 @property (nonatomic, strong) NSTimer *logUpdateTimer;
+@property (nonatomic, readonly) NSMutableIndexSet *logMessageIdentifiers;
 
 @end
 
@@ -27,6 +28,9 @@
 {
     [super viewDidLoad];
 
+    _logMessages = [NSMutableArray array];
+    _logMessageIdentifiers = [NSMutableIndexSet indexSet];
+
     [self.tableView registerClass:[FLEXSystemLogTableViewCell class] forCellReuseIdentifier:kFLEXSystemLogTableViewCellIdentifier];
     self.tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
     self.title = @"Loading...";
@@ -65,10 +69,18 @@
 - (void)updateLogMessages
 {
     dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
-        NSArray *logMessages = [[self class] allLogMessagesForCurrentProcess];
+        NSArray<FLEXSystemLogMessage *> *newMessages = [self newLogMessagesForCurrentProcess];
+        if (!newMessages.count) {
+            return;
+        }
+
         dispatch_async(dispatch_get_main_queue(), ^{
             self.title = @"System Log";
-            self.logMessages = logMessages;
+
+            [self.logMessages addObjectsFromArray:newMessages];
+            for (FLEXSystemLogMessage *message in newMessages) {
+                [self.logMessageIdentifiers addIndex:(NSUInteger)message.messageID];
+            }
 
             // "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;
@@ -154,7 +166,7 @@
 {
     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;
         }]];
@@ -169,18 +181,51 @@
 
 #pragma mark - Log Message Fetching
 
-+ (NSArray *)allLogMessagesForCurrentProcess
+- (NSArray<FLEXSystemLogMessage *> *)newLogMessagesForCurrentProcess
 {
-    asl_object_t query = asl_new(ASL_TYPE_QUERY);
+    if (!self.logMessages.count) {
+        return [[self class] allLogMessagesForCurrentProcess];
+    }
 
-    // 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);
+    aslresponse response = [FLEXSystemLogTableViewController ASLMessageListForCurrentProcess];
     aslmsg aslMessage = NULL;
 
-    NSMutableArray *logMessages = [NSMutableArray array];
+    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);
+
+    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]];
     }

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

@@ -24,7 +24,8 @@
 @property (nonatomic, strong) FLEXWindow *explorerWindow;
 @property (nonatomic, strong) FLEXExplorerViewController *explorerViewController;
 
-@property (nonatomic, readonly, strong) NSMutableArray *userGlobalEntries;
+@property (nonatomic, readonly, strong) NSMutableArray<FLEXGlobalsTableViewControllerEntry *> *userGlobalEntries;
+@property (nonatomic, readonly, strong) NSMutableDictionary<NSString *, FLEXCustomContentViewerFuture> *customContentTypeViewers;
 
 @end
 
@@ -44,7 +45,8 @@
 {
     self = [super init];
     if (self) {
-        _userGlobalEntries = [[NSMutableArray alloc] init];
+        _userGlobalEntries = [NSMutableArray array];
+        _customContentTypeViewers = [NSMutableDictionary dictionary];
     }
     return self;
 }
@@ -115,6 +117,16 @@
     [[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
@@ -278,6 +290,15 @@
     [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];
@@ -302,7 +323,7 @@
 
 - (UIScrollView *)firstScrollView
 {
-    NSMutableArray *views = [[[[UIApplication sharedApplication] keyWindow] subviews] mutableCopy];
+    NSMutableArray<UIView *> *views = [[[[UIApplication sharedApplication] keyWindow] subviews] mutableCopy];
     UIScrollView *scrollView = nil;
     while ([views count] > 0) {
         UIView *view = [views firstObject];

Classes/Network/FLEXNetworkCurlLogger.m

@@ -18,7 +18,7 @@
         [curlCommandString appendFormat:@"-H \'%@: %@\' ", key, val];
     }];
 
-    NSArray *cookies = [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookiesForURL:request.URL];
+    NSArray<NSHTTPCookie *> *cookies = [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookiesForURL:request.URL];
     if (cookies) {
         [curlCommandString appendFormat:@"-H \'Cookie:"];
         for (NSHTTPCookie *cookie in cookies) {

Classes/Network/FLEXNetworkHistoryTableViewController.m

@@ -17,9 +17,9 @@
 @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;
@@ -41,6 +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;
 }
@@ -86,7 +90,7 @@
     self.networkTransactions = [[FLEXNetworkRecorder defaultRecorder] networkTransactions];
 }
 
-- (void)setNetworkTransactions:(NSArray *)networkTransactions
+- (void)setNetworkTransactions:(NSArray<FLEXNetworkTransaction *> *)networkTransactions
 {
     if (![_networkTransactions isEqual:networkTransactions]) {
         _networkTransactions = networkTransactions;
@@ -105,7 +109,7 @@
     [self updateFirstSectionHeader];
 }
 
-- (void)setFilteredNetworkTransactions:(NSArray *)filteredNetworkTransactions
+- (void)setFilteredNetworkTransactions:(NSArray<FLEXNetworkTransaction *> *)filteredNetworkTransactions
 {
     if (![_filteredNetworkTransactions isEqual:filteredNetworkTransactions]) {
         _filteredNetworkTransactions = filteredNetworkTransactions;
@@ -192,7 +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]];
             }
@@ -328,7 +332,7 @@
 {
     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(), ^{

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

@@ -22,8 +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
@@ -74,9 +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];
     });
@@ -104,6 +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) {
@@ -169,7 +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];
             }
@@ -246,7 +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];
     });
 }
@@ -254,7 +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;
 
@@ -34,7 +34,7 @@
 {
     [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];
@@ -136,7 +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/FLEXNetworkTransactionDetailTableViewController.m

@@ -14,17 +14,7 @@
 #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);
 
@@ -40,9 +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
 
@@ -75,7 +76,7 @@ typedef UIViewController *(^FLEXNetworkDetailRowSelectionFuture)(void);
     }
 }
 
-- (void)setSections:(NSArray *)sections
+- (void)setSections:(NSArray<FLEXNetworkDetailSection *> *)sections
 {
     if (![_sections isEqual:sections]) {
         _sections = [sections copy];
@@ -85,7 +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) {
@@ -210,10 +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 ?: @"";
@@ -228,7 +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";
@@ -390,7 +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];
@@ -409,12 +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[key];
+        id value = dictionary[key];
         FLEXNetworkDetailRow *row = [[FLEXNetworkDetailRow alloc] init];
         row.title = key;
         row.detailText = [value description];
@@ -425,6 +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]) {

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];
     }
@@ -124,7 +124,7 @@ NSString *const kFLEXNetworkTransactionCellIdentifier = @"kFLEXNetworkTransactio
 
 - (NSString *)transactionDetailsLabelText
 {
-    NSMutableArray *detailComponents = [NSMutableArray array];
+    NSMutableArray<NSString *> *detailComponents = [NSMutableArray array];
 
     NSString *timestamp = [[self class] timestampStringFromRequestDate:self.transaction.startTime];
     if ([timestamp length] > 0) {

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.

Classes/Network/PonyDebugger/FLEXNetworkObserver.m

@@ -68,7 +68,7 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
 
 @interface FLEXNetworkObserver ()
 
-@property (nonatomic, strong) NSMutableDictionary *requestStatesForRequestIDs;
+@property (nonatomic, strong) NSMutableDictionary<NSString *, FLEXInternalRequestState *> *requestStatesForRequestIDs;
 @property (nonatomic, strong) dispatch_queue_t queue;
 
 @end
@@ -172,7 +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:)
         };
@@ -318,7 +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];
@@ -357,7 +357,7 @@ 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];
                 NSError *temporaryError = nil;
                 NSURLResponse *temporaryResponse = nil;
@@ -420,7 +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];
@@ -462,9 +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];
@@ -479,7 +479,7 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
     });
 }
 
-+ (NSString *)mechansimFromClassMethod:(SEL)selector onClass:(Class)class
++ (NSString *)mechanismFromClassMethod:(SEL)selector onClass:(Class)class
 {
     return [NSString stringWithFormat:@"+[%@ %@]", NSStringFromClass(class), NSStringFromSelector(selector)];
 }
@@ -674,7 +674,7 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
         [self sniffWithoutDuplicationForObject:session selector:selector sniffingBlock:^{
             [[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);
         }];
     };
 
@@ -755,7 +755,7 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
         [self sniffWithoutDuplicationForObject:session selector:selector sniffingBlock:^{
             [[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);
         }];
     };
     
@@ -944,7 +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;
@@ -995,7 +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];
     }];

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/FLEXObjectExplorerFactory.m

@@ -17,6 +17,7 @@
 #import "FLEXImageExplorerViewController.h"
 #import "FLEXClassExplorerViewController.h"
 #import "FLEXLayerExplorerViewController.h"
+#import "FLEXColorExplorerViewController.h"
 #import <objc/runtime.h>
 
 @implementation FLEXObjectExplorerFactory
@@ -28,7 +29,7 @@
         return nil;
     }
     
-    static NSDictionary *explorerSubclassesForObjectTypeStrings = nil;
+    static NSDictionary<NSString *, Class> *explorerSubclassesForObjectTypeStrings = nil;
     static dispatch_once_t once;
     dispatch_once(&once, ^{
         explorerSubclassesForObjectTypeStrings = @{NSStringFromClass([NSArray class])          : [FLEXArrayExplorerViewController class],
@@ -38,7 +39,9 @@
                                                    NSStringFromClass([UIViewController class]) : [FLEXViewControllerExplorerViewController class],
                                                    NSStringFromClass([UIView class])           : [FLEXViewExplorerViewController class],
                                                    NSStringFromClass([UIImage class])          : [FLEXImageExplorerViewController class],
-                                                   NSStringFromClass([CALayer class])          : [FLEXLayerExplorerViewController class]};
+                                                   NSStringFromClass([CALayer class])          : [FLEXLayerExplorerViewController class],
+                                                   NSStringFromClass([UIColor class])          : [FLEXColorExplorerViewController class]
+                                                   };
     });
     
     Class explorerClass = nil;

Classes/ObjectExplorers/FLEXObjectExplorerViewController.h

@@ -33,6 +33,7 @@ typedef NS_ENUM(NSUInteger, FLEXObjectExplorerSection) {
 - (NSString *)customSectionSubtitleForRowCookie:(id)rowCookie;
 - (BOOL)customSectionCanDrillIntoRowWithCookie:(id)rowCookie;
 - (UIViewController *)customSectionDrillInViewControllerForRowCookie:(id)rowCookie;
+- (UIView *)customViewForRowCookie:(id)rowCookie;
 
 // More subclass configuration hooks.
 

Classes/ObjectExplorers/FLEXObjectExplorerViewController.m

@@ -17,6 +17,20 @@
 #import "FLEXInstancesTableViewController.h"
 #import <objc/runtime.h>
 
+typedef NS_ENUM(NSUInteger, FLEXObjectExplorerScope) {
+    FLEXObjectExplorerScopeNoInheritance,
+    FLEXObjectExplorerScopeWithParent,
+    FLEXObjectExplorerScopeAllButNSObject,
+    FLEXObjectExplorerScopeNSObjectOnly
+};
+
+typedef NS_ENUM(NSUInteger, FLEXMetadataKind) {
+    FLEXMetadataKindProperties,
+    FLEXMetadataKindIvars,
+    FLEXMetadataKindMethods,
+    FLEXMetadataKindClassMethods
+};
+
 // Convenience boxes to keep runtime properties, ivars, and methods in foundation collections.
 @interface FLEXPropertyBox : NSObject
 @property (nonatomic, assign) objc_property_t property;
@@ -36,36 +50,41 @@
 @implementation FLEXMethodBox
 @end
 
-static const NSInteger kFLEXObjectExplorerScopeNoInheritanceIndex = 0;
-static const NSInteger kFLEXObjectExplorerScopeIncludeInheritanceIndex = 1;
-
 @interface FLEXObjectExplorerViewController () <UISearchBarDelegate>
 
-@property (nonatomic, strong) NSArray *properties;
-@property (nonatomic, strong) NSArray *inheritedProperties;
-@property (nonatomic, strong) NSArray *filteredProperties;
+@property (nonatomic, strong) NSArray<FLEXPropertyBox *> *properties;
+@property (nonatomic, strong) NSArray<FLEXPropertyBox *> *propertiesWithParent;
+@property (nonatomic, strong) NSArray<FLEXPropertyBox *> *inheritedProperties;
+@property (nonatomic, strong) NSArray<FLEXPropertyBox *> *NSObjectProperties;
+@property (nonatomic, strong) NSArray<FLEXPropertyBox *> *filteredProperties;
 
-@property (nonatomic, strong) NSArray *ivars;
-@property (nonatomic, strong) NSArray *inheritedIvars;
-@property (nonatomic, strong) NSArray *filteredIvars;
+@property (nonatomic, strong) NSArray<FLEXIvarBox *> *ivars;
+@property (nonatomic, strong) NSArray<FLEXIvarBox *> *ivarsWithParent;
+@property (nonatomic, strong) NSArray<FLEXIvarBox *> *inheritedIvars;
+@property (nonatomic, strong) NSArray<FLEXIvarBox *> *NSObjectIvars;
+@property (nonatomic, strong) NSArray<FLEXIvarBox *> *filteredIvars;
 
-@property (nonatomic, strong) NSArray *methods;
-@property (nonatomic, strong) NSArray *inheritedMethods;
-@property (nonatomic, strong) NSArray *filteredMethods;
+@property (nonatomic, strong) NSArray<FLEXMethodBox *> *methods;
+@property (nonatomic, strong) NSArray<FLEXMethodBox *> *methodsWithParent;
+@property (nonatomic, strong) NSArray<FLEXMethodBox *> *inheritedMethods;
+@property (nonatomic, strong) NSArray<FLEXMethodBox *> *NSObjectMethods;
+@property (nonatomic, strong) NSArray<FLEXMethodBox *> *filteredMethods;
 
-@property (nonatomic, strong) NSArray *classMethods;
-@property (nonatomic, strong) NSArray *inheritedClassMethods;
-@property (nonatomic, strong) NSArray *filteredClassMethods;
+@property (nonatomic, strong) NSArray<FLEXMethodBox *> *classMethods;
+@property (nonatomic, strong) NSArray<FLEXMethodBox *> *classMethodsWithParent;
+@property (nonatomic, strong) NSArray<FLEXMethodBox *> *inheritedClassMethods;
+@property (nonatomic, strong) NSArray<FLEXMethodBox *> *NSObjectClassMethods;
+@property (nonatomic, strong) NSArray<FLEXMethodBox *> *filteredClassMethods;
 
-@property (nonatomic, strong) NSArray *superclasses;
-@property (nonatomic, strong) NSArray *filteredSuperclasses;
+@property (nonatomic, strong) NSArray<Class> *superclasses;
+@property (nonatomic, strong) NSArray<Class> *filteredSuperclasses;
 
 @property (nonatomic, strong) NSArray *cachedCustomSectionRowCookies;
 @property (nonatomic, strong) NSIndexSet *customSectionVisibleIndexes;
 
 @property (nonatomic, strong) UISearchBar *searchBar;
 @property (nonatomic, strong) NSString *filterText;
-@property (nonatomic, assign) BOOL includeInheritance;
+@property (nonatomic, assign) FLEXObjectExplorerScope scope;
 
 @end
 
@@ -85,8 +104,7 @@ static const NSInteger kFLEXObjectExplorerScopeIncludeInheritanceIndex = 1;
     self.searchBar.placeholder = [FLEXUtility searchBarPlaceholderText];
     self.searchBar.delegate = self;
     self.searchBar.showsScopeBar = YES;
-    self.searchBar.scopeButtonTitles = @[@"No Inheritance", @"Include Inheritance"];
-    [self.searchBar sizeToFit];
+    [self refreshScopeTitles];
     self.tableView.tableHeaderView = self.searchBar;
     
     self.refreshControl = [[UIRefreshControl alloc] init];
@@ -116,6 +134,28 @@ static const NSInteger kFLEXObjectExplorerScopeIncludeInheritanceIndex = 1;
 
 #pragma mark - Search
 
+- (void)refreshScopeTitles {
+    if (!self.searchBar) return;
+
+    Class parent = [self.object superclass];
+    Class parentSuper = [parent superclass];
+
+    NSMutableArray *scopes = [NSMutableArray arrayWithObject:@"Base"];
+    if (parent) {
+        [scopes addObject:@"+ Parent"];
+    }
+    if (parentSuper && parentSuper != [NSObject class]) {
+        [scopes addObject:@"+ Inherited"];
+    }
+    if ([self.object isKindOfClass:[NSObject class]]) {
+        [scopes addObject:@"NSObject"];
+    }
+
+    self.searchBar.scopeButtonTitles = scopes;
+    [self.searchBar sizeToFit];
+    [self updateTableData];
+}
+
 - (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
 {
     self.filterText = searchText;
@@ -128,13 +168,62 @@ static const NSInteger kFLEXObjectExplorerScopeIncludeInheritanceIndex = 1;
 
 - (void)searchBar:(UISearchBar *)searchBar selectedScopeButtonIndexDidChange:(NSInteger)selectedScope
 {
-    if (selectedScope == kFLEXObjectExplorerScopeIncludeInheritanceIndex) {
-        self.includeInheritance = YES;
-    } else if (selectedScope == kFLEXObjectExplorerScopeNoInheritanceIndex) {
-        self.includeInheritance = NO;
+    self.scope = selectedScope;
+    [self updateDisplayedData];
+}
+
+- (NSArray *)metadata:(FLEXMetadataKind)metadataKind forScope:(FLEXObjectExplorerScope)scope {
+    switch (metadataKind) {
+        case FLEXMetadataKindProperties:
+            switch (self.scope) {
+                case FLEXObjectExplorerScopeNoInheritance:
+                    return self.properties;
+                case FLEXObjectExplorerScopeWithParent:
+                    return self.propertiesWithParent;
+                case FLEXObjectExplorerScopeAllButNSObject:
+                    return self.inheritedProperties;
+                case FLEXObjectExplorerScopeNSObjectOnly:
+                    return self.NSObjectProperties;
+            }
+        case FLEXMetadataKindIvars:
+            switch (self.scope) {
+                case FLEXObjectExplorerScopeNoInheritance:
+                    return self.ivars;
+                case FLEXObjectExplorerScopeWithParent:
+                    return self.ivarsWithParent;
+                case FLEXObjectExplorerScopeAllButNSObject:
+                    return self.inheritedIvars;
+                case FLEXObjectExplorerScopeNSObjectOnly:
+                    return self.NSObjectIvars;
+            }
+        case FLEXMetadataKindMethods:
+            switch (self.scope) {
+                case FLEXObjectExplorerScopeNoInheritance:
+                    return self.methods;
+                case FLEXObjectExplorerScopeWithParent:
+                    return self.methodsWithParent;
+                case FLEXObjectExplorerScopeAllButNSObject:
+                    return self.inheritedMethods;
+                case FLEXObjectExplorerScopeNSObjectOnly:
+                    return self.NSObjectMethods;
+            }
+        case FLEXMetadataKindClassMethods:
+            switch (self.scope) {
+                case FLEXObjectExplorerScopeNoInheritance:
+                    return self.classMethods;
+                case FLEXObjectExplorerScopeWithParent:
+                    return self.classMethodsWithParent;
+                case FLEXObjectExplorerScopeAllButNSObject:
+                    return self.inheritedClassMethods;
+                case FLEXObjectExplorerScopeNSObjectOnly:
+                    return self.NSObjectClassMethods;
+            }
     }
 }
 
+- (NSInteger)totalCountOfMetadata:(FLEXMetadataKind)metadataKind forScope:(FLEXObjectExplorerScope)scope {
+    return [self metadata:metadataKind forScope:scope].count;
+}
 
 #pragma mark - Setter overrides
 
@@ -143,15 +232,7 @@ static const NSInteger kFLEXObjectExplorerScopeIncludeInheritanceIndex = 1;
     _object = object;
     // Use [object class] here rather than object_getClass because we don't want to show the KVO prefix for observed objects.
     self.title = [[object class] description];
-    [self updateTableData];
-}
-
-- (void)setIncludeInheritance:(BOOL)includeInheritance
-{
-    if (_includeInheritance != includeInheritance) {
-        _includeInheritance = includeInheritance;
-        [self updateDisplayedData];
-    }
+    [self refreshScopeTitles];
 }
 
 - (void)setFilterText:(NSString *)filterText
@@ -215,12 +296,18 @@ static const NSInteger kFLEXObjectExplorerScopeIncludeInheritanceIndex = 1;
 {
     Class class = [self.object class];
     self.properties = [[self class] propertiesForClass:class];
-    self.inheritedProperties = [[self class] inheritedPropertiesForClass:class];
+    self.propertiesWithParent = [self.properties arrayByAddingObjectsFromArray:[[self class] propertiesForClass:[class superclass]]];
+    self.inheritedProperties = [self.properties arrayByAddingObjectsFromArray:[[self class] inheritedPropertiesForClass:class]];
+    self.NSObjectProperties = [[self class] propertiesForClass:[NSObject class]];
 }
 
-+ (NSArray *)propertiesForClass:(Class)class
++ (NSArray<FLEXPropertyBox *> *)propertiesForClass:(Class)class
 {
-    NSMutableArray *boxedProperties = [NSMutableArray array];
+    if (!class) {
+        return @[];
+    }
+    
+    NSMutableArray<FLEXPropertyBox *> *boxedProperties = [NSMutableArray array];
     unsigned int propertyCount = 0;
     objc_property_t *propertyList = class_copyPropertyList(class, &propertyCount);
     if (propertyList) {
@@ -234,10 +321,11 @@ static const NSInteger kFLEXObjectExplorerScopeIncludeInheritanceIndex = 1;
     return boxedProperties;
 }
 
-+ (NSArray *)inheritedPropertiesForClass:(Class)class
+/// Skips NSObject
++ (NSArray<FLEXPropertyBox *> *)inheritedPropertiesForClass:(Class)class
 {
-    NSMutableArray *inheritedProperties = [NSMutableArray array];
-    while ((class = [class superclass])) {
+    NSMutableArray<FLEXPropertyBox *> *inheritedProperties = [NSMutableArray array];
+    while ((class = [class superclass]) && class != [NSObject class]) {
         [inheritedProperties addObjectsFromArray:[self propertiesForClass:class]];
     }
     return inheritedProperties;
@@ -245,14 +333,11 @@ static const NSInteger kFLEXObjectExplorerScopeIncludeInheritanceIndex = 1;
 
 - (void)updateFilteredProperties
 {
-    NSArray *candidateProperties = self.properties;
-    if (self.includeInheritance) {
-        candidateProperties = [candidateProperties arrayByAddingObjectsFromArray:self.inheritedProperties];
-    }
+    NSArray<FLEXPropertyBox *> *candidateProperties = [self metadata:FLEXMetadataKindProperties forScope:self.scope];
     
-    NSArray *unsortedFilteredProperties = nil;
+    NSArray<FLEXPropertyBox *> *unsortedFilteredProperties = nil;
     if ([self.filterText length] > 0) {
-        NSMutableArray *mutableUnsortedFilteredProperties = [NSMutableArray array];
+        NSMutableArray<FLEXPropertyBox *> *mutableUnsortedFilteredProperties = [NSMutableArray array];
         for (FLEXPropertyBox *propertyBox in candidateProperties) {
             NSString *prettyName = [FLEXRuntimeUtility prettyNameForProperty:propertyBox.property];
             if ([prettyName rangeOfString:self.filterText options:NSCaseInsensitiveSearch].location != NSNotFound) {
@@ -282,7 +367,10 @@ static const NSInteger kFLEXObjectExplorerScopeIncludeInheritanceIndex = 1;
     id value = nil;
     if ([self canHaveInstanceState]) {
         FLEXPropertyBox *propertyBox = self.filteredProperties[index];
+        NSString *typeString = [FLEXRuntimeUtility typeEncodingForProperty:propertyBox.property];
+        const FLEXTypeEncoding *encoding = [typeString cStringUsingEncoding:NSUTF8StringEncoding];
         value = [FLEXRuntimeUtility valueForProperty:propertyBox.property onObject:self.object];
+        value = [FLEXRuntimeUtility potentiallyUnwrapBoxedPointer:value type:encoding];
     }
     return value;
 }
@@ -294,12 +382,17 @@ static const NSInteger kFLEXObjectExplorerScopeIncludeInheritanceIndex = 1;
 {
     Class class = [self.object class];
     self.ivars = [[self class] ivarsForClass:class];
-    self.inheritedIvars = [[self class] inheritedIvarsForClass:class];
+    self.ivarsWithParent = [self.ivars arrayByAddingObjectsFromArray:[[self class] ivarsForClass:[class superclass]]];
+    self.inheritedIvars = [self.ivars arrayByAddingObjectsFromArray:[[self class] inheritedIvarsForClass:class]];
+    self.NSObjectIvars = [[self class] ivarsForClass:[NSObject class]];
 }
 
-+ (NSArray *)ivarsForClass:(Class)class
++ (NSArray<FLEXIvarBox *> *)ivarsForClass:(Class)class
 {
-    NSMutableArray *boxedIvars = [NSMutableArray array];
+    if (!class) {
+        return @[];
+    }
+    NSMutableArray<FLEXIvarBox *> *boxedIvars = [NSMutableArray array];
     unsigned int ivarCount = 0;
     Ivar *ivarList = class_copyIvarList(class, &ivarCount);
     if (ivarList) {
@@ -313,10 +406,11 @@ static const NSInteger kFLEXObjectExplorerScopeIncludeInheritanceIndex = 1;
     return boxedIvars;
 }
 
-+ (NSArray *)inheritedIvarsForClass:(Class)class
+/// Skips NSObject
++ (NSArray<FLEXIvarBox *> *)inheritedIvarsForClass:(Class)class
 {
-    NSMutableArray *inheritedIvars = [NSMutableArray array];
-    while ((class = [class superclass])) {
+    NSMutableArray<FLEXIvarBox *> *inheritedIvars = [NSMutableArray array];
+    while ((class = [class superclass]) && class != [NSObject class]) {
         [inheritedIvars addObjectsFromArray:[self ivarsForClass:class]];
     }
     return inheritedIvars;
@@ -324,14 +418,11 @@ static const NSInteger kFLEXObjectExplorerScopeIncludeInheritanceIndex = 1;
 
 - (void)updateFilteredIvars
 {
-    NSArray *candidateIvars = self.ivars;
-    if (self.includeInheritance) {
-        candidateIvars = [candidateIvars arrayByAddingObjectsFromArray:self.inheritedIvars];
-    }
+    NSArray<FLEXIvarBox *> *candidateIvars = [self metadata:FLEXMetadataKindIvars forScope:self.scope];
     
-    NSArray *unsortedFilteredIvars = nil;
+    NSArray<FLEXIvarBox *> *unsortedFilteredIvars = nil;
     if ([self.filterText length] > 0) {
-        NSMutableArray *mutableUnsortedFilteredIvars = [NSMutableArray array];
+        NSMutableArray<FLEXIvarBox *> *mutableUnsortedFilteredIvars = [NSMutableArray array];
         for (FLEXIvarBox *ivarBox in candidateIvars) {
             NSString *prettyName = [FLEXRuntimeUtility prettyNameForIvar:ivarBox.ivar];
             if ([prettyName rangeOfString:self.filterText options:NSCaseInsensitiveSearch].location != NSNotFound) {
@@ -361,7 +452,9 @@ static const NSInteger kFLEXObjectExplorerScopeIncludeInheritanceIndex = 1;
     id value = nil;
     if ([self canHaveInstanceState]) {
         FLEXIvarBox *ivarBox = self.filteredIvars[index];
+        const FLEXTypeEncoding *encoding = ivar_getTypeEncoding(ivarBox.ivar);
         value = [FLEXRuntimeUtility valueForIvar:ivarBox.ivar onObject:self.object];
+        value = [FLEXRuntimeUtility potentiallyUnwrapBoxedPointer:value type:encoding];
     }
     return value;
 }
@@ -373,12 +466,15 @@ static const NSInteger kFLEXObjectExplorerScopeIncludeInheritanceIndex = 1;
 {
     Class class = [self.object class];
     self.methods = [[self class] methodsForClass:class];
-    self.inheritedMethods = [[self class] inheritedMethodsForClass:class];
+    self.methodsWithParent = [self.methods arrayByAddingObjectsFromArray:[[self class] methodsForClass:[class superclass]]];
+    self.inheritedMethods = [self.methods arrayByAddingObjectsFromArray:[[self class] inheritedMethodsForClass:class]];
+    self.NSObjectMethods = [[self class] methodsForClass:[NSObject class]];
 }
 
 - (void)updateFilteredMethods
 {
-    self.filteredMethods = [self filteredMethodsFromMethods:self.methods inheritedMethods:self.inheritedMethods areClassMethods:NO];
+    NSArray<FLEXMethodBox *> *candidateMethods = [self metadata:FLEXMetadataKindMethods forScope:self.scope];
+    self.filteredMethods = [self filteredMethodsFromMethods:candidateMethods areClassMethods:NO];
 }
 
 - (void)updateClassMethods
@@ -386,17 +482,24 @@ static const NSInteger kFLEXObjectExplorerScopeIncludeInheritanceIndex = 1;
     const char *className = [NSStringFromClass([self.object class]) UTF8String];
     Class metaClass = objc_getMetaClass(className);
     self.classMethods = [[self class] methodsForClass:metaClass];
-    self.inheritedClassMethods = [[self class] inheritedMethodsForClass:metaClass];
+    self.classMethodsWithParent = [self.classMethods arrayByAddingObjectsFromArray:[[self class] methodsForClass:[metaClass superclass]]];
+    self.inheritedClassMethods = [self.classMethods arrayByAddingObjectsFromArray:[[self class] inheritedMethodsForClass:metaClass]];
+    self.NSObjectClassMethods = [[self class] methodsForClass:[NSObject class]];
 }
 
 - (void)updateFilteredClassMethods
 {
-    self.filteredClassMethods = [self filteredMethodsFromMethods:self.classMethods inheritedMethods:self.inheritedClassMethods areClassMethods:YES];
+    NSArray<FLEXMethodBox *> *candidateMethods = [self metadata:FLEXMetadataKindClassMethods forScope:self.scope];
+    self.filteredClassMethods = [self filteredMethodsFromMethods:candidateMethods areClassMethods:YES];
 }
 
-+ (NSArray *)methodsForClass:(Class)class
++ (NSArray<FLEXMethodBox *> *)methodsForClass:(Class)class
 {
-    NSMutableArray *boxedMethods = [NSMutableArray array];
+    if (!class) {
+        return @[];
+    }
+    
+    NSMutableArray<FLEXMethodBox *> *boxedMethods = [NSMutableArray array];
     unsigned int methodCount = 0;
     Method *methodList = class_copyMethodList(class, &methodCount);
     if (methodList) {
@@ -410,25 +513,22 @@ static const NSInteger kFLEXObjectExplorerScopeIncludeInheritanceIndex = 1;
     return boxedMethods;
 }
 
-+ (NSArray *)inheritedMethodsForClass:(Class)class
+/// Skips NSObject
++ (NSArray<FLEXMethodBox *> *)inheritedMethodsForClass:(Class)class
 {
-    NSMutableArray *inheritedMethods = [NSMutableArray array];
-    while ((class = [class superclass])) {
+    NSMutableArray<FLEXMethodBox *> *inheritedMethods = [NSMutableArray array];
+    while ((class = [class superclass]) && class != [NSObject class]) {
         [inheritedMethods addObjectsFromArray:[self methodsForClass:class]];
     }
     return inheritedMethods;
 }
 
-- (NSArray *)filteredMethodsFromMethods:(NSArray *)methods inheritedMethods:(NSArray *)inheritedMethods areClassMethods:(BOOL)areClassMethods
+- (NSArray<FLEXMethodBox *> *)filteredMethodsFromMethods:(NSArray<FLEXMethodBox *> *)methods areClassMethods:(BOOL)areClassMethods
 {
-    NSArray *candidateMethods = methods;
-    if (self.includeInheritance) {
-        candidateMethods = [candidateMethods arrayByAddingObjectsFromArray:inheritedMethods];
-    }
-    
-    NSArray *unsortedFilteredMethods = nil;
+    NSArray<FLEXMethodBox *> *candidateMethods = methods;
+    NSArray<FLEXMethodBox *> *unsortedFilteredMethods = nil;
     if ([self.filterText length] > 0) {
-        NSMutableArray *mutableUnsortedFilteredMethods = [NSMutableArray array];
+        NSMutableArray<FLEXMethodBox *> *mutableUnsortedFilteredMethods = [NSMutableArray array];
         for (FLEXMethodBox *methodBox in candidateMethods) {
             NSString *prettyName = [FLEXRuntimeUtility prettyNameForMethod:methodBox.method isClassMethod:areClassMethods];
             if ([prettyName rangeOfString:self.filterText options:NSCaseInsensitiveSearch].location != NSNotFound) {
@@ -440,7 +540,7 @@ static const NSInteger kFLEXObjectExplorerScopeIncludeInheritanceIndex = 1;
         unsortedFilteredMethods = candidateMethods;
     }
     
-    NSArray *sortedFilteredMethods = [unsortedFilteredMethods sortedArrayUsingComparator:^NSComparisonResult(FLEXMethodBox *methodBox1, FLEXMethodBox *methodBox2) {
+    NSArray<FLEXMethodBox *> *sortedFilteredMethods = [unsortedFilteredMethods sortedArrayUsingComparator:^NSComparisonResult(FLEXMethodBox *methodBox1, FLEXMethodBox *methodBox2) {
         NSString *name1 = NSStringFromSelector(method_getName(methodBox1.method));
         NSString *name2 = NSStringFromSelector(method_getName(methodBox2.method));
         return [name1 caseInsensitiveCompare:name2];
@@ -464,9 +564,9 @@ static const NSInteger kFLEXObjectExplorerScopeIncludeInheritanceIndex = 1;
 
 #pragma mark - Superclasses
 
-+ (NSArray *)superclassesForClass:(Class)class
++ (NSArray<Class> *)superclassesForClass:(Class)class
 {
-    NSMutableArray *superClasses = [NSMutableArray array];
+    NSMutableArray<Class> *superClasses = [NSMutableArray array];
     while ((class = [class superclass])) {
         [superClasses addObject:class];
     }
@@ -481,7 +581,7 @@ static const NSInteger kFLEXObjectExplorerScopeIncludeInheritanceIndex = 1;
 - (void)updateFilteredSuperclasses
 {
     if ([self.filterText length] > 0) {
-        NSMutableArray *filteredSuperclasses = [NSMutableArray array];
+        NSMutableArray<Class> *filteredSuperclasses = [NSMutableArray array];
         for (Class superclass in self.superclasses) {
             if ([NSStringFromClass(superclass) rangeOfString:self.filterText options:NSCaseInsensitiveSearch].length > 0) {
                 [filteredSuperclasses addObject:superclass];
@@ -496,9 +596,9 @@ static const NSInteger kFLEXObjectExplorerScopeIncludeInheritanceIndex = 1;
 
 #pragma mark - Table View Data Helpers
 
-- (NSArray *)possibleExplorerSections
+- (NSArray<NSNumber *> *)possibleExplorerSections
 {
-    static NSArray *possibleSections = nil;
+    static NSArray<NSNumber *> *possibleSections = nil;
     static dispatch_once_t onceToken;
     dispatch_once(&onceToken, ^{
         possibleSections = @[@(FLEXObjectExplorerSectionDescription),
@@ -513,9 +613,9 @@ static const NSInteger kFLEXObjectExplorerScopeIncludeInheritanceIndex = 1;
     return possibleSections;
 }
 
-- (NSArray *)visibleExplorerSections
+- (NSArray<NSNumber *> *)visibleExplorerSections
 {
-    NSMutableArray *visibleSections = [NSMutableArray array];
+    NSMutableArray<NSNumber *> *visibleSections = [NSMutableArray array];
     
     for (NSNumber *possibleSection in [self possibleExplorerSections]) {
         FLEXObjectExplorerSection explorerSection = [possibleSection unsignedIntegerValue];
@@ -736,34 +836,22 @@ static const NSInteger kFLEXObjectExplorerScopeIncludeInheritanceIndex = 1;
         } break;
             
         case FLEXObjectExplorerSectionProperties: {
-            NSUInteger totalCount = [self.properties count];
-            if (self.includeInheritance) {
-                totalCount += [self.inheritedProperties count];
-            }
+            NSUInteger totalCount = [self totalCountOfMetadata:FLEXMetadataKindProperties forScope:self.scope];
             title = [self sectionTitleWithBaseName:@"Properties" totalCount:totalCount filteredCount:[self.filteredProperties count]];
         } break;
             
         case FLEXObjectExplorerSectionIvars: {
-            NSUInteger totalCount = [self.ivars count];
-            if (self.includeInheritance) {
-                totalCount += [self.inheritedIvars count];
-            }
+            NSUInteger totalCount = [self totalCountOfMetadata:FLEXMetadataKindIvars forScope:self.scope];
             title = [self sectionTitleWithBaseName:@"Ivars" totalCount:totalCount filteredCount:[self.filteredIvars count]];
         } break;
             
         case FLEXObjectExplorerSectionMethods: {
-            NSUInteger totalCount = [self.methods count];
-            if (self.includeInheritance) {
-                totalCount += [self.inheritedMethods count];
-            }
+            NSUInteger totalCount = [self totalCountOfMetadata:FLEXMetadataKindMethods forScope:self.scope];
             title = [self sectionTitleWithBaseName:@"Methods" totalCount:totalCount filteredCount:[self.filteredMethods count]];
         } break;
             
         case FLEXObjectExplorerSectionClassMethods: {
-            NSUInteger totalCount = [self.classMethods count];
-            if (self.includeInheritance) {
-                totalCount += [self.inheritedClassMethods count];
-            }
+            NSUInteger totalCount = [self totalCountOfMetadata:FLEXMetadataKindClassMethods forScope:self.scope];
             title = [self sectionTitleWithBaseName:@"Class Methods" totalCount:totalCount filteredCount:[self.filteredClassMethods count]];
         } break;
             
@@ -858,7 +946,8 @@ static const NSInteger kFLEXObjectExplorerScopeIncludeInheritanceIndex = 1;
 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
 {
     FLEXObjectExplorerSection explorerSection = [self explorerSectionAtIndex:indexPath.section];
-    
+
+    BOOL isCustomSection = explorerSection == FLEXObjectExplorerSectionCustom;
     BOOL useDescriptionCell = explorerSection == FLEXObjectExplorerSectionDescription;
     NSString *cellIdentifier = useDescriptionCell ? kFLEXMultilineTableViewCellIdentifier : @"cell";
     UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
@@ -874,7 +963,16 @@ static const NSInteger kFLEXObjectExplorerScopeIncludeInheritanceIndex = 1;
             cell.detailTextLabel.textColor = [UIColor grayColor];
         }
     }
-    
+
+
+    UIView *customView;
+    if (isCustomSection) {
+        customView = [self customViewForRowCookie:[self customSectionRowCookieForVisibleRow:indexPath.row]];
+        if (customView) {
+            [cell.contentView addSubview:customView];
+        }
+    }
+
     cell.textLabel.text = [self titleForRow:indexPath.row inExplorerSection:explorerSection];
     cell.detailTextLabel.text = [self subtitleForRow:indexPath.row inExplorerSection:explorerSection];
     cell.accessoryType = [self canDrillInToRow:indexPath.row inExplorerSection:explorerSection] ? UITableViewCellAccessoryDisclosureIndicator : UITableViewCellAccessoryNone;
@@ -891,7 +989,11 @@ static const NSInteger kFLEXObjectExplorerScopeIncludeInheritanceIndex = 1;
         NSAttributedString *attributedText = [[NSAttributedString alloc] initWithString:text attributes:@{ NSFontAttributeName : [FLEXUtility defaultTableViewCellLabelFont] }];
         CGFloat preferredHeight = [FLEXMultilineTableViewCell preferredHeightWithAttributedText:attributedText inTableViewWidth:self.tableView.frame.size.width style:tableView.style showsAccessory:NO];
         height = MAX(height, preferredHeight);
+    } else if (explorerSection == FLEXObjectExplorerSectionCustom) {
+        id cookie = [self customSectionRowCookieForVisibleRow:indexPath.row];
+        height = [self heightForCustomViewRowForRowCookie:cookie];
     }
+    
     return height;
 }
 
@@ -1020,6 +1122,16 @@ static const NSInteger kFLEXObjectExplorerScopeIncludeInheritanceIndex = 1;
     return nil;
 }
 
+- (UIView *)customViewForRowCookie:(id)rowCookie
+{
+    return nil;
+}
+
+- (CGFloat)heightForCustomViewRowForRowCookie:(id)rowCookie
+{
+    return self.tableView.rowHeight;
+}
+
 - (BOOL)canHaveInstanceState
 {
     return YES;

Classes/ObjectExplorers/FLEXViewExplorerViewController.m

@@ -57,9 +57,9 @@ typedef NS_ENUM(NSUInteger, FLEXViewExplorerRow) {
     return rowCookies;
 }
 
-- (NSArray *)shortcutPropertyNames
+- (NSArray<NSString *> *)shortcutPropertyNames
 {
-    NSArray *propertyNames = @[@"frame", @"bounds", @"center", @"transform", @"backgroundColor", @"alpha", @"opaque", @"hidden", @"clipsToBounds", @"userInteractionEnabled", @"layer"];
+    NSArray<NSString *> *propertyNames = @[@"frame", @"bounds", @"center", @"transform", @"backgroundColor", @"alpha", @"opaque", @"hidden", @"clipsToBounds", @"userInteractionEnabled", @"layer"];
     
     if ([self.viewToExplore isKindOfClass:[UILabel class]]) {
         propertyNames = [@[@"text", @"font", @"textColor"] arrayByAddingObjectsFromArray:propertyNames];
@@ -195,22 +195,22 @@ typedef NS_ENUM(NSUInteger, FLEXViewExplorerRow) {
     // We add these properties to the class at runtime if they haven't been added yet.
     // This way, we can use our property editor to access and change them.
     // The property attributes match the declared attributes in UIView.h
-    NSDictionary *frameAttributes = @{kFLEXUtilityAttributeTypeEncoding : @(@encode(CGRect)), kFLEXUtilityAttributeNonAtomic : @""};
+    NSDictionary<NSString *, NSString *> *frameAttributes = @{kFLEXUtilityAttributeTypeEncoding : @(@encode(CGRect)), kFLEXUtilityAttributeNonAtomic : @""};
     [FLEXRuntimeUtility tryAddPropertyWithName:"frame" attributes:frameAttributes toClass:[UIView class]];
     
-    NSDictionary *alphaAttributes = @{kFLEXUtilityAttributeTypeEncoding : @(@encode(CGFloat)), kFLEXUtilityAttributeNonAtomic : @""};
+    NSDictionary<NSString *, NSString *> *alphaAttributes = @{kFLEXUtilityAttributeTypeEncoding : @(@encode(CGFloat)), kFLEXUtilityAttributeNonAtomic : @""};
     [FLEXRuntimeUtility tryAddPropertyWithName:"alpha" attributes:alphaAttributes toClass:[UIView class]];
     
-    NSDictionary *clipsAttributes = @{kFLEXUtilityAttributeTypeEncoding : @(@encode(BOOL)), kFLEXUtilityAttributeNonAtomic : @""};
+    NSDictionary<NSString *, NSString *> *clipsAttributes = @{kFLEXUtilityAttributeTypeEncoding : @(@encode(BOOL)), kFLEXUtilityAttributeNonAtomic : @""};
     [FLEXRuntimeUtility tryAddPropertyWithName:"clipsToBounds" attributes:clipsAttributes toClass:[UIView class]];
     
-    NSDictionary *opaqueAttributes = @{kFLEXUtilityAttributeTypeEncoding : @(@encode(BOOL)), kFLEXUtilityAttributeNonAtomic : @"", kFLEXUtilityAttributeCustomGetter : @"isOpaque"};
+    NSDictionary<NSString *, NSString *> *opaqueAttributes = @{kFLEXUtilityAttributeTypeEncoding : @(@encode(BOOL)), kFLEXUtilityAttributeNonAtomic : @"", kFLEXUtilityAttributeCustomGetter : @"isOpaque"};
     [FLEXRuntimeUtility tryAddPropertyWithName:"opaque" attributes:opaqueAttributes toClass:[UIView class]];
     
-    NSDictionary *hiddenAttributes = @{kFLEXUtilityAttributeTypeEncoding : @(@encode(BOOL)), kFLEXUtilityAttributeNonAtomic : @"", kFLEXUtilityAttributeCustomGetter : @"isHidden"};
+    NSDictionary<NSString *, NSString *> *hiddenAttributes = @{kFLEXUtilityAttributeTypeEncoding : @(@encode(BOOL)), kFLEXUtilityAttributeNonAtomic : @"", kFLEXUtilityAttributeCustomGetter : @"isHidden"};
     [FLEXRuntimeUtility tryAddPropertyWithName:"hidden" attributes:hiddenAttributes toClass:[UIView class]];
     
-    NSDictionary *backgroundColorAttributes = @{kFLEXUtilityAttributeTypeEncoding : @(FLEXEncodeClass(UIColor)), kFLEXUtilityAttributeNonAtomic : @"", kFLEXUtilityAttributeCopy : @""};
+    NSDictionary<NSString *, NSString *> *backgroundColorAttributes = @{kFLEXUtilityAttributeTypeEncoding : @(FLEXEncodeClass(UIColor)), kFLEXUtilityAttributeNonAtomic : @"", kFLEXUtilityAttributeCopy : @""};
     [FLEXRuntimeUtility tryAddPropertyWithName:"backgroundColor" attributes:backgroundColorAttributes toClass:[UIView class]];
 }
 

Classes/Toolbar/FLEXExplorerToolbar.h

@@ -12,6 +12,10 @@
 
 @interface FLEXExplorerToolbar : UIView
 
+/// The items to be displayed in the toolbar. Defaults to:
+/// globalsItem, hierarchyItem, selectItem, moveItem, closeItem
+@property (nonatomic, copy) NSArray<FLEXToolbarItem *> *toolbarItems;
+
 /// Toolbar item for selecting views.
 /// Users of the toolbar can configure the enabled/selected state and event targets/actions.
 @property (nonatomic, strong, readonly) FLEXToolbarItem *selectItem;

Classes/Toolbar/FLEXExplorerToolbar.m

@@ -22,12 +22,13 @@
 
 @property (nonatomic, strong) UIImageView *dragHandleImageView;
 
-@property (nonatomic, strong) NSArray *toolbarItems;
-
 @property (nonatomic, strong) UIView *selectedViewDescriptionContainer;
+@property (nonatomic, strong) UIView *selectedViewDescriptionSafeAreaContainer;
 @property (nonatomic, strong) UIView *selectedViewColorIndicator;
 @property (nonatomic, strong) UILabel *selectedViewDescriptionLabel;
 
+@property (nonatomic, strong,readwrite) UIView *backgroundView;
+
 @end
 
 @implementation FLEXExplorerToolbar
@@ -36,10 +37,12 @@
 {
     self = [super initWithFrame:frame];
     if (self) {
-        NSMutableArray *toolbarItems = [NSMutableArray array];
-        
+        self.backgroundView = [[UIView alloc] init];
+        self.backgroundView.backgroundColor = [UIColor colorWithWhite:1.0 alpha:0.95];
+        [self addSubview:self.backgroundView];
+
         self.dragHandle = [[UIView alloc] init];
-        self.dragHandle.backgroundColor = [FLEXToolbarItem defaultBackgroundColor];
+        self.dragHandle.backgroundColor = [UIColor clearColor];
         [self addSubview:self.dragHandle];
         
         UIImage *dragHandle = [FLEXResources dragHandle];
@@ -48,56 +51,52 @@
         
         UIImage *globalsIcon = [FLEXResources globeIcon];
         self.globalsItem = [FLEXToolbarItem toolbarItemWithTitle:@"menu" image:globalsIcon];
-        [self addSubview:self.globalsItem];
-        [toolbarItems addObject:self.globalsItem];
         
         UIImage *listIcon = [FLEXResources listIcon];
         self.hierarchyItem = [FLEXToolbarItem toolbarItemWithTitle:@"views" image:listIcon];
-        [self addSubview:self.hierarchyItem];
-        [toolbarItems addObject:self.hierarchyItem];
         
         UIImage *selectIcon = [FLEXResources selectIcon];
         self.selectItem = [FLEXToolbarItem toolbarItemWithTitle:@"select" image:selectIcon];
-        [self addSubview:self.selectItem];
-        [toolbarItems addObject:self.selectItem];
         
         UIImage *moveIcon = [FLEXResources moveIcon];
         self.moveItem = [FLEXToolbarItem toolbarItemWithTitle:@"move" image:moveIcon];
-        [self addSubview:self.moveItem];
-        [toolbarItems addObject:self.moveItem];
         
         UIImage *closeIcon = [FLEXResources closeIcon];
         self.closeItem = [FLEXToolbarItem toolbarItemWithTitle:@"close" image:closeIcon];
-        [self addSubview:self.closeItem];
-        [toolbarItems addObject:self.closeItem];
-        
-        self.toolbarItems = toolbarItems;
-        self.backgroundColor = [UIColor clearColor];
-        
+
         self.selectedViewDescriptionContainer = [[UIView alloc] init];
         self.selectedViewDescriptionContainer.backgroundColor = [UIColor colorWithWhite:0.9 alpha:0.95];
         self.selectedViewDescriptionContainer.hidden = YES;
         [self addSubview:self.selectedViewDescriptionContainer];
+
+        self.selectedViewDescriptionSafeAreaContainer = [[UIView alloc] init];
+        self.selectedViewDescriptionSafeAreaContainer.backgroundColor = [UIColor clearColor];
+        [self.selectedViewDescriptionContainer addSubview:self.selectedViewDescriptionSafeAreaContainer];
         
         self.selectedViewColorIndicator = [[UIView alloc] init];
         self.selectedViewColorIndicator.backgroundColor = [UIColor redColor];
-        [self.selectedViewDescriptionContainer addSubview:self.selectedViewColorIndicator];
+        [self.selectedViewDescriptionSafeAreaContainer addSubview:self.selectedViewColorIndicator];
         
         self.selectedViewDescriptionLabel = [[UILabel alloc] init];
         self.selectedViewDescriptionLabel.backgroundColor = [UIColor clearColor];
         self.selectedViewDescriptionLabel.font = [[self class] descriptionLabelFont];
-        [self.selectedViewDescriptionContainer addSubview:self.selectedViewDescriptionLabel];
+        [self.selectedViewDescriptionSafeAreaContainer addSubview:self.selectedViewDescriptionLabel];
+        
+        self.toolbarItems = @[_globalsItem, _hierarchyItem, _selectItem, _moveItem, _closeItem];
     }
+        
     return self;
 }
 
 - (void)layoutSubviews
 {
     [super layoutSubviews];
-    
+
+
+    CGRect safeArea = [self safeArea];
     // Drag Handle
     const CGFloat kToolbarItemHeight = [[self class] toolbarItemHeight];
-    self.dragHandle.frame = CGRectMake(self.bounds.origin.x, self.bounds.origin.y, [[self class] dragHandleWidth], kToolbarItemHeight);
+    self.dragHandle.frame = CGRectMake(CGRectGetMinX(safeArea), CGRectGetMinY(safeArea), [[self class] dragHandleWidth], kToolbarItemHeight);
     CGRect dragHandleImageFrame = self.dragHandleImageView.frame;
     dragHandleImageFrame.origin.x = FLEXFloor((self.dragHandle.frame.size.width - dragHandleImageFrame.size.width) / 2.0);
     dragHandleImageFrame.origin.y = FLEXFloor((self.dragHandle.frame.size.height - dragHandleImageFrame.size.height) / 2.0);
@@ -106,9 +105,9 @@
     
     // Toolbar Items
     CGFloat originX = CGRectGetMaxX(self.dragHandle.frame);
-    CGFloat originY = self.bounds.origin.y;
+    CGFloat originY = CGRectGetMinY(safeArea);
     CGFloat height = kToolbarItemHeight;
-    CGFloat width = FLEXFloor((CGRectGetMaxX(self.bounds) - originX) / [self.toolbarItems count]);
+    CGFloat width = FLEXFloor((CGRectGetWidth(safeArea) - CGRectGetWidth(self.dragHandle.frame)) / [self.toolbarItems count]);
     for (UIView *toolbarItem in self.toolbarItems) {
         toolbarItem.frame = CGRectMake(originX, originY, width, height);
         originX = CGRectGetMaxX(toolbarItem.frame);
@@ -117,8 +116,10 @@
     // Make sure the last toolbar item goes to the edge to account for any accumulated rounding effects.
     UIView *lastToolbarItem = [self.toolbarItems lastObject];
     CGRect lastToolbarItemFrame = lastToolbarItem.frame;
-    lastToolbarItemFrame.size.width = CGRectGetMaxX(self.bounds) - lastToolbarItemFrame.origin.x;
+    lastToolbarItemFrame.size.width = CGRectGetMaxX(safeArea) - lastToolbarItemFrame.origin.x;
     lastToolbarItem.frame = lastToolbarItemFrame;
+
+    self.backgroundView.frame = CGRectMake(0, 0, CGRectGetWidth(self.bounds), kToolbarItemHeight);
     
     const CGFloat kSelectedViewColorDiameter = [[self class] selectedViewColorIndicatorDiameter];
     const CGFloat kDescriptionLabelHeight = [[self class] descriptionLabelHeight];
@@ -127,11 +128,19 @@
     const CGFloat kDescriptionContainerHeight = [[self class] descriptionContainerHeight];
     
     CGRect descriptionContainerFrame = CGRectZero;
+    descriptionContainerFrame.size.width = CGRectGetWidth(self.bounds);
     descriptionContainerFrame.size.height = kDescriptionContainerHeight;
+    descriptionContainerFrame.origin.x = CGRectGetMinX(self.bounds);
     descriptionContainerFrame.origin.y = CGRectGetMaxY(self.bounds) - kDescriptionContainerHeight;
-    descriptionContainerFrame.size.width = self.bounds.size.width;
     self.selectedViewDescriptionContainer.frame = descriptionContainerFrame;
-    
+
+    CGRect descriptionSafeAreaContainerFrame = CGRectZero;
+    descriptionSafeAreaContainerFrame.size.width = CGRectGetWidth(safeArea);
+    descriptionSafeAreaContainerFrame.size.height = kDescriptionContainerHeight;
+    descriptionSafeAreaContainerFrame.origin.x = CGRectGetMinX(safeArea);
+    descriptionSafeAreaContainerFrame.origin.y = CGRectGetMinY(safeArea);
+    self.selectedViewDescriptionSafeAreaContainer.frame = descriptionSafeAreaContainerFrame;
+
     // Selected View Color
     CGRect selectedViewColorFrame = CGRectZero;
     selectedViewColorFrame.size.width = kSelectedViewColorDiameter;
@@ -150,10 +159,36 @@
     descriptionLabelFrame.size.width = CGRectGetMaxX(self.selectedViewDescriptionContainer.bounds) - kHorizontalPadding - descriptionOriginX;
     self.selectedViewDescriptionLabel.frame = descriptionLabelFrame;
 }
-
-
+    
+    
 #pragma mark - Setter Overrides
 
+- (void)setToolbarItems:(NSArray<FLEXToolbarItem *> *)toolbarItems {
+    if (_toolbarItems == toolbarItems) {
+        return;
+    }
+    
+    // Remove old toolbar items, if any
+    for (FLEXToolbarItem *item in _toolbarItems) {
+        [item removeFromSuperview];
+    }
+    
+    // Trim to 5 items if necessary
+    if (toolbarItems.count > 5) {
+        toolbarItems = [toolbarItems subarrayWithRange:NSMakeRange(0, 5)];
+    }
+
+    for (FLEXToolbarItem *item in toolbarItems) {
+        [self addSubview:item];
+    }
+
+    _toolbarItems = toolbarItems.copy;
+
+    // Lay out new items
+    [self setNeedsLayout];
+    [self layoutIfNeeded];
+}
+
 - (void)setSelectedViewOverlayColor:(UIColor *)selectedViewOverlayColor
 {
     if (![_selectedViewOverlayColor isEqual:selectedViewOverlayColor]) {
@@ -223,4 +258,15 @@
     return CGSizeMake(size.width, height);
 }
 
+- (CGRect)safeArea
+{
+  CGRect safeArea = self.bounds;
+#if FLEX_AT_LEAST_IOS11_SDK
+  if (@available(iOS 11, *)) {
+    safeArea = UIEdgeInsetsInsetRect(self.bounds, self.safeAreaInsets);
+  }
+#endif
+  return safeArea;
+}
+
 @end

Classes/Toolbar/FLEXToolbarItem.h

@@ -12,6 +12,4 @@
 
 + (instancetype)toolbarItemWithTitle:(NSString *)title image:(UIImage *)image;
 
-+ (UIColor *)defaultBackgroundColor;
-
 @end

Classes/Toolbar/FLEXToolbarItem.m

@@ -43,7 +43,7 @@
 
 #pragma mark - Display Defaults
 
-+ (NSDictionary *)titleAttributes
++ (NSDictionary<NSString *, id> *)titleAttributes
 {
     return @{NSFontAttributeName : [FLEXUtility defaultFontOfSize:12.0]};
 }
@@ -70,7 +70,7 @@
 
 + (UIColor *)defaultBackgroundColor
 {
-    return [UIColor colorWithWhite:1.0 alpha:0.95];
+    return [UIColor clearColor];
 }
 
 + (CGFloat)topMargin

Classes/Utility/APPLE_LICENSE

@@ -0,0 +1,367 @@
+APPLE PUBLIC SOURCE LICENSE
+Version 2.0 - August 6, 2003
+
+Please read this License carefully before downloading this software.
+By downloading or using this software, you are agreeing to be bound by
+the terms of this License. If you do not or cannot agree to the terms
+of this License, please do not download or use the software.
+
+1. General; Definitions. This License applies to any program or other
+work which Apple Computer, Inc. ("Apple") makes publicly available and
+which contains a notice placed by Apple identifying such program or
+work as "Original Code" and stating that it is subject to the terms of
+this Apple Public Source License version 2.0 ("License"). As used in
+this License:
+
+1.1 "Applicable Patent Rights" mean: (a) in the case where Apple is
+the grantor of rights, (i) claims of patents that are now or hereafter
+acquired, owned by or assigned to Apple and (ii) that cover subject
+matter contained in the Original Code, but only to the extent
+necessary to use, reproduce and/or distribute the Original Code
+without infringement; and (b) in the case where You are the grantor of
+rights, (i) claims of patents that are now or hereafter acquired,
+owned by or assigned to You and (ii) that cover subject matter in Your
+Modifications, taken alone or in combination with Original Code.
+
+1.2 "Contributor" means any person or entity that creates or
+contributes to the creation of Modifications.
+
+1.3 "Covered Code" means the Original Code, Modifications, the
+combination of Original Code and any Modifications, and/or any
+respective portions thereof.
+
+1.4 "Externally Deploy" means: (a) to sublicense, distribute or
+otherwise make Covered Code available, directly or indirectly, to
+anyone other than You; and/or (b) to use Covered Code, alone or as
+part of a Larger Work, in any way to provide a service, including but
+not limited to delivery of content, through electronic communication
+with a client other than You.
+
+1.5 "Larger Work" means a work which combines Covered Code or portions
+thereof with code not governed by the terms of this License.
+
+1.6 "Modifications" mean any addition to, deletion from, and/or change
+to, the substance and/or structure of the Original Code, any previous
+Modifications, the combination of Original Code and any previous
+Modifications, and/or any respective portions thereof. When code is
+released as a series of files, a Modification is: (a) any addition to
+or deletion from the contents of a file containing Covered Code;
+and/or (b) any new file or other representation of computer program
+statements that contains any part of Covered Code.
+
+1.7 "Original Code" means (a) the Source Code of a program or other
+work as originally made available by Apple under this License,
+including the Source Code of any updates or upgrades to such programs
+or works made available by Apple under this License, and that has been
+expressly identified by Apple as such in the header file(s) of such
+work; and (b) the object code compiled from such Source Code and
+originally made available by Apple under this License.
+
+1.8 "Source Code" means the human readable form of a program or other
+work that is suitable for making modifications to it, including all
+modules it contains, plus any associated interface definition files,
+scripts used to control compilation and installation of an executable
+(object code).
+
+1.9 "You" or "Your" means an individual or a legal entity exercising
+rights under this License. For legal entities, "You" or "Your"
+includes any entity which controls, is controlled by, or is under
+common control with, You, where "control" means (a) the power, direct
+or indirect, to cause the direction or management of such entity,
+whether by contract or otherwise, or (b) ownership of fifty percent
+(50%) or more of the outstanding shares or beneficial ownership of
+such entity.
+
+2. Permitted Uses; Conditions & Restrictions. Subject to the terms
+and conditions of this License, Apple hereby grants You, effective on
+the date You accept this License and download the Original Code, a
+world-wide, royalty-free, non-exclusive license, to the extent of
+Apple's Applicable Patent Rights and copyrights covering the Original
+Code, to do the following:
+
+2.1 Unmodified Code. You may use, reproduce, display, perform,
+internally distribute within Your organization, and Externally Deploy
+verbatim, unmodified copies of the Original Code, for commercial or
+non-commercial purposes, provided that in each instance:
+
+(a) You must retain and reproduce in all copies of Original Code the
+copyright and other proprietary notices and disclaimers of Apple as
+they appear in the Original Code, and keep intact all notices in the
+Original Code that refer to this License; and
+
+(b) You must include a copy of this License with every copy of Source
+Code of Covered Code and documentation You distribute or Externally
+Deploy, and You may not offer or impose any terms on such Source Code
+that alter or restrict this License or the recipients' rights
+hereunder, except as permitted under Section 6.
+
+2.2 Modified Code. You may modify Covered Code and use, reproduce,
+display, perform, internally distribute within Your organization, and
+Externally Deploy Your Modifications and Covered Code, for commercial
+or non-commercial purposes, provided that in each instance You also
+meet all of these conditions:
+
+(a) You must satisfy all the conditions of Section 2.1 with respect to
+the Source Code of the Covered Code;
+
+(b) You must duplicate, to the extent it does not already exist, the
+notice in Exhibit A in each file of the Source Code of all Your
+Modifications, and cause the modified files to carry prominent notices
+stating that You changed the files and the date of any change; and
+
+(c) If You Externally Deploy Your Modifications, You must make
+Source Code of all Your Externally Deployed Modifications either
+available to those to whom You have Externally Deployed Your
+Modifications, or publicly available. Source Code of Your Externally
+Deployed Modifications must be released under the terms set forth in
+this License, including the license grants set forth in Section 3
+below, for as long as you Externally Deploy the Covered Code or twelve
+(12) months from the date of initial External Deployment, whichever is
+longer. You should preferably distribute the Source Code of Your
+Externally Deployed Modifications electronically (e.g. download from a
+web site).
+
+2.3 Distribution of Executable Versions. In addition, if You
+Externally Deploy Covered Code (Original Code and/or Modifications) in
+object code, executable form only, You must include a prominent
+notice, in the code itself as well as in related documentation,
+stating that Source Code of the Covered Code is available under the
+terms of this License with information on how and where to obtain such
+Source Code.
+
+2.4 Third Party Rights. You expressly acknowledge and agree that
+although Apple and each Contributor grants the licenses to their
+respective portions of the Covered Code set forth herein, no
+assurances are provided by Apple or any Contributor that the Covered
+Code does not infringe the patent or other intellectual property
+rights of any other entity. Apple and each Contributor disclaim any
+liability to You for claims brought by any other entity based on
+infringement of intellectual property rights or otherwise. As a
+condition to exercising the rights and licenses granted hereunder, You
+hereby assume sole responsibility to secure any other intellectual
+property rights needed, if any. For example, if a third party patent
+license is required to allow You to distribute the Covered Code, it is
+Your responsibility to acquire that license before distributing the
+Covered Code.
+
+3. Your Grants. In consideration of, and as a condition to, the
+licenses granted to You under this License, You hereby grant to any
+person or entity receiving or distributing Covered Code under this
+License a non-exclusive, royalty-free, perpetual, irrevocable license,
+under Your Applicable Patent Rights and other intellectual property
+rights (other than patent) owned or controlled by You, to use,
+reproduce, display, perform, modify, sublicense, distribute and
+Externally Deploy Your Modifications of the same scope and extent as
+Apple's licenses under Sections 2.1 and 2.2 above.
+
+4. Larger Works. You may create a Larger Work by combining Covered
+Code with other code not governed by the terms of this License and
+distribute the Larger Work as a single product. In each such instance,
+You must make sure the requirements of this License are fulfilled for
+the Covered Code or any portion thereof.
+
+5. Limitations on Patent License. Except as expressly stated in
+Section 2, no other patent rights, express or implied, are granted by
+Apple herein. Modifications and/or Larger Works may require additional
+patent licenses from Apple which Apple may grant in its sole
+discretion.
+
+6. Additional Terms. You may choose to offer, and to charge a fee for,
+warranty, support, indemnity or liability obligations and/or other
+rights consistent with the scope of the license granted herein
+("Additional Terms") to one or more recipients of Covered Code.
+However, You may do so only on Your own behalf and as Your sole
+responsibility, and not on behalf of Apple or any Contributor. You
+must obtain the recipient's agreement that any such Additional Terms
+are offered by You alone, and You hereby agree to indemnify, defend
+and hold Apple and every Contributor harmless for any liability
+incurred by or claims asserted against Apple or such Contributor by
+reason of any such Additional Terms.
+
+7. Versions of the License. Apple may publish revised and/or new
+versions of this License from time to time. Each version will be given
+a distinguishing version number. Once Original Code has been published
+under a particular version of this License, You may continue to use it
+under the terms of that version. You may also choose to use such
+Original Code under the terms of any subsequent version of this
+License published by Apple. No one other than Apple has the right to
+modify the terms applicable to Covered Code created under this
+License.
+
+8. NO WARRANTY OR SUPPORT. The Covered Code may contain in whole or in
+part pre-release, untested, or not fully tested works. The Covered
+Code may contain errors that could cause failures or loss of data, and
+may be incomplete or contain inaccuracies. You expressly acknowledge
+and agree that use of the Covered Code, or any portion thereof, is at
+Your sole and entire risk. THE COVERED CODE IS PROVIDED "AS IS" AND
+WITHOUT WARRANTY, UPGRADES OR SUPPORT OF ANY KIND AND APPLE AND
+APPLE'S LICENSOR(S) (COLLECTIVELY REFERRED TO AS "APPLE" FOR THE
+PURPOSES OF SECTIONS 8 AND 9) AND ALL CONTRIBUTORS EXPRESSLY DISCLAIM
+ALL WARRANTIES AND/OR CONDITIONS, EXPRESS OR IMPLIED, INCLUDING, BUT
+NOT LIMITED TO, THE IMPLIED WARRANTIES AND/OR CONDITIONS OF
+MERCHANTABILITY, OF SATISFACTORY QUALITY, OF FITNESS FOR A PARTICULAR
+PURPOSE, OF ACCURACY, OF QUIET ENJOYMENT, AND NONINFRINGEMENT OF THIRD
+PARTY RIGHTS. APPLE AND EACH CONTRIBUTOR DOES NOT WARRANT AGAINST
+INTERFERENCE WITH YOUR ENJOYMENT OF THE COVERED CODE, THAT THE
+FUNCTIONS CONTAINED IN THE COVERED CODE WILL MEET YOUR REQUIREMENTS,
+THAT THE OPERATION OF THE COVERED CODE WILL BE UNINTERRUPTED OR
+ERROR-FREE, OR THAT DEFECTS IN THE COVERED CODE WILL BE CORRECTED. NO
+ORAL OR WRITTEN INFORMATION OR ADVICE GIVEN BY APPLE, AN APPLE
+AUTHORIZED REPRESENTATIVE OR ANY CONTRIBUTOR SHALL CREATE A WARRANTY.
+You acknowledge that the Covered Code is not intended for use in the
+operation of nuclear facilities, aircraft navigation, communication
+systems, or air traffic control machines in which case the failure of
+the Covered Code could lead to death, personal injury, or severe
+physical or environmental damage.
+
+9. LIMITATION OF LIABILITY. TO THE EXTENT NOT PROHIBITED BY LAW, IN NO
+EVENT SHALL APPLE OR ANY CONTRIBUTOR BE LIABLE FOR ANY INCIDENTAL,
+SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES ARISING OUT OF OR RELATING
+TO THIS LICENSE OR YOUR USE OR INABILITY TO USE THE COVERED CODE, OR
+ANY PORTION THEREOF, WHETHER UNDER A THEORY OF CONTRACT, WARRANTY,
+TORT (INCLUDING NEGLIGENCE), PRODUCTS LIABILITY OR OTHERWISE, EVEN IF
+APPLE OR SUCH CONTRIBUTOR HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+DAMAGES AND NOTWITHSTANDING THE FAILURE OF ESSENTIAL PURPOSE OF ANY
+REMEDY. SOME JURISDICTIONS DO NOT ALLOW THE LIMITATION OF LIABILITY OF
+INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THIS LIMITATION MAY NOT APPLY
+TO YOU. In no event shall Apple's total liability to You for all
+damages (other than as may be required by applicable law) under this
+License exceed the amount of fifty dollars ($50.00).
+
+10. Trademarks. This License does not grant any rights to use the
+trademarks or trade names "Apple", "Apple Computer", "Mac", "Mac OS",
+"QuickTime", "QuickTime Streaming Server" or any other trademarks,
+service marks, logos or trade names belonging to Apple (collectively
+"Apple Marks") or to any trademark, service mark, logo or trade name
+belonging to any Contributor. You agree not to use any Apple Marks in
+or as part of the name of products derived from the Original Code or
+to endorse or promote products derived from the Original Code other
+than as expressly permitted by and in strict compliance at all times
+with Apple's third party trademark usage guidelines which are posted
+at http://www.apple.com/legal/guidelinesfor3rdparties.html.
+
+11. Ownership. Subject to the licenses granted under this License,
+each Contributor retains all rights, title and interest in and to any
+Modifications made by such Contributor. Apple retains all rights,
+title and interest in and to the Original Code and any Modifications
+made by or on behalf of Apple ("Apple Modifications"), and such Apple
+Modifications will not be automatically subject to this License. Apple
+may, at its sole discretion, choose to license such Apple
+Modifications under this License, or on different terms from those
+contained in this License or may choose not to license them at all.
+
+12. Termination.
+
+12.1 Termination. This License and the rights granted hereunder will
+terminate:
+
+(a) automatically without notice from Apple if You fail to comply with
+any term(s) of this License and fail to cure such breach within 30
+days of becoming aware of such breach;
+
+(b) immediately in the event of the circumstances described in Section
+13.5(b); or
+
+(c) automatically without notice from Apple if You, at any time during
+the term of this License, commence an action for patent infringement
+against Apple; provided that Apple did not first commence
+an action for patent infringement against You in that instance.
+
+12.2 Effect of Termination. Upon termination, You agree to immediately
+stop any further use, reproduction, modification, sublicensing and
+distribution of the Covered Code. All sublicenses to the Covered Code
+which have been properly granted prior to termination shall survive
+any termination of this License. Provisions which, by their nature,
+should remain in effect beyond the termination of this License shall
+survive, including but not limited to Sections 3, 5, 8, 9, 10, 11,
+12.2 and 13. No party will be liable to any other for compensation,
+indemnity or damages of any sort solely as a result of terminating
+this License in accordance with its terms, and termination of this
+License will be without prejudice to any other right or remedy of
+any party.
+
+13. Miscellaneous.
+
+13.1 Government End Users. The Covered Code is a "commercial item" as
+defined in FAR 2.101. Government software and technical data rights in
+the Covered Code include only those rights customarily provided to the
+public as defined in this License. This customary commercial license
+in technical data and software is provided in accordance with FAR
+12.211 (Technical Data) and 12.212 (Computer Software) and, for
+Department of Defense purchases, DFAR 252.227-7015 (Technical Data --
+Commercial Items) and 227.7202-3 (Rights in Commercial Computer
+Software or Computer Software Documentation). Accordingly, all U.S.
+Government End Users acquire Covered Code with only those rights set
+forth herein.
+
+13.2 Relationship of Parties. This License will not be construed as
+creating an agency, partnership, joint venture or any other form of
+legal association between or among You, Apple or any Contributor, and
+You will not represent to the contrary, whether expressly, by
+implication, appearance or otherwise.
+
+13.3 Independent Development. Nothing in this License will impair
+Apple's right to acquire, license, develop, have others develop for
+it, market and/or distribute technology or products that perform the
+same or similar functions as, or otherwise compete with,
+Modifications, Larger Works, technology or products that You may
+develop, produce, market or distribute.
+
+13.4 Waiver; Construction. Failure by Apple or any Contributor to
+enforce any provision of this License will not be deemed a waiver of
+future enforcement of that or any other provision. Any law or
+regulation which provides that the language of a contract shall be
+construed against the drafter will not apply to this License.
+
+13.5 Severability. (a) If for any reason a court of competent
+jurisdiction finds any provision of this License, or portion thereof,
+to be unenforceable, that provision of the License will be enforced to
+the maximum extent permissible so as to effect the economic benefits
+and intent of the parties, and the remainder of this License will
+continue in full force and effect. (b) Notwithstanding the foregoing,
+if applicable law prohibits or restricts You from fully and/or
+specifically complying with Sections 2 and/or 3 or prevents the
+enforceability of either of those Sections, this License will
+immediately terminate and You must immediately discontinue any use of
+the Covered Code and destroy all copies of it that are in your
+possession or control.
+
+13.6 Dispute Resolution. Any litigation or other dispute resolution
+between You and Apple relating to this License shall take place in the
+Northern District of California, and You and Apple hereby consent to
+the personal jurisdiction of, and venue in, the state and federal
+courts within that District with respect to this License. The
+application of the United Nations Convention on Contracts for the
+International Sale of Goods is expressly excluded.
+
+13.7 Entire Agreement; Governing Law. This License constitutes the
+entire agreement between the parties with respect to the subject
+matter hereof. This License shall be governed by the laws of the
+United States and the State of California, except that body of
+California law concerning conflicts of law.
+
+Where You are located in the province of Quebec, Canada, the following
+clause applies: The parties hereby confirm that they have requested
+that this License and all related documents be drafted in English. Les
+parties ont exige que le present contrat et tous les documents
+connexes soient rediges en anglais.
+
+EXHIBIT A.
+
+"Portions Copyright (c) 1999-2003 Apple Computer, Inc. All Rights
+Reserved.
+
+This file contains Original Code and/or Modifications of Original Code
+as defined in and that are subject to the Apple Public Source License
+Version 2.0 (the 'License'). You may not use this file except in
+compliance with the License. Please obtain a copy of the License at
+http://www.opensource.apple.com/apsl/ and read it before using this
+file.
+
+The Original Code and all software distributed under the License are
+distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+Please see the License for the specific language governing rights and
+limitations under the License."

Classes/Utility/FLEXHeapEnumerator.m

@@ -22,8 +22,7 @@ typedef struct {
 
 static void range_callback(task_t task, void *context, unsigned type, vm_range_t *ranges, unsigned rangeCount)
 {
-    flex_object_enumeration_block_t block = (__bridge flex_object_enumeration_block_t)context;
-    if (!block) {
+    if (!context) {
         return;
     }
     
@@ -40,7 +39,7 @@ static void range_callback(task_t task, void *context, unsigned type, vm_range_t
 #endif
         // If the class pointer matches one in our set of class pointers from the runtime, then we should have an object.
         if (CFSetContainsValue(registeredClasses, (__bridge const void *)(tryClass))) {
-            block((__bridge id)tryObject, tryClass);
+            (*(flex_object_enumeration_block_t __unsafe_unretained *)context)((__bridge id)tryObject, tryClass);
         }
     }
 }
@@ -71,9 +70,47 @@ static kern_return_t reader(__unused task_t remote_task, vm_address_t remote_add
     if (result == KERN_SUCCESS) {
         for (unsigned int i = 0; i < zoneCount; i++) {
             malloc_zone_t *zone = (malloc_zone_t *)zones[i];
-            if (zone->introspect && zone->introspect->enumerator) {
-                zone->introspect->enumerator(TASK_NULL, (__bridge void *)block, MALLOC_PTR_IN_USE_RANGE_TYPE, (vm_address_t)zone, reader, &range_callback);
+            malloc_introspection_t *introspection = zone->introspect;
+            NSString *zoneName = @(zone->zone_name);
+
+            if (![zoneName isEqualToString:@"DefaultMallocZone"] || !introspection) {
+                continue;
             }
+
+            void (*lock_zone)(malloc_zone_t *zone)   = introspection->force_lock;
+            void (*unlock_zone)(malloc_zone_t *zone) = introspection->force_unlock;
+
+            // Callback has to unlock the zone so we freely allocate memory inside the given block
+            flex_object_enumeration_block_t callback = ^(__unsafe_unretained id object, __unsafe_unretained Class actualClass) {
+                unlock_zone(zone);
+                block(object, actualClass);
+                lock_zone(zone);
+            };
+
+            // The largest realistic memory address varies by platform.
+            // Only 48 bits are used by 64 bit machines while
+            // 32 bit machines use all bits.
+#if __arm64__
+            static uintptr_t MAX_REALISTIC_ADDRESS = 0xFFFFFFFFFFFF;
+#else
+            static uintptr_t MAX_REALISTIC_ADDRESS = INT_MAX;
+#endif
+
+            // There is little documentation on when and why
+            // any of these function pointers might be NULL
+            // or garbage, so we resort to checking for NULL
+            // and impossible memory addresses at least
+            if (lock_zone && unlock_zone &&
+                introspection->enumerator &&
+                (uintptr_t)lock_zone < MAX_REALISTIC_ADDRESS &&
+                (uintptr_t)unlock_zone < MAX_REALISTIC_ADDRESS) {
+                lock_zone(zone);
+                introspection->enumerator(TASK_NULL, (void *)&callback, MALLOC_PTR_IN_USE_RANGE_TYPE, (vm_address_t)zone, reader, &range_callback);
+                unlock_zone(zone);
+            }
+
+            // Only one zone to enumerate
+            break;
         }
     }
 }

Classes/Utility/FLEXKeyboardShortcutManager.m

@@ -57,12 +57,12 @@
 
 - (NSString *)description
 {
-    NSDictionary *keyMappings = @{ UIKeyInputUpArrow : @"↑",
-                                   UIKeyInputDownArrow : @"↓",
-                                   UIKeyInputLeftArrow : @"←",
-                                   UIKeyInputRightArrow : @"→",
-                                   UIKeyInputEscape : @"␛",
-                                   @" " : @"␠"};
+    NSDictionary<NSString *, NSString *> *keyMappings = @{ UIKeyInputUpArrow : @"↑",
+                                                           UIKeyInputDownArrow : @"↓",
+                                                           UIKeyInputLeftArrow : @"←",
+                                                           UIKeyInputRightArrow : @"→",
+                                                           UIKeyInputEscape : @"␛",
+                                                           @" " : @"␠"};
     
     NSString *prettyKey = nil;
     if (self.key && keyMappings[self.key]) {
@@ -113,7 +113,7 @@
 
 @interface FLEXKeyboardShortcutManager ()
 
-@property (nonatomic, strong) NSMutableDictionary *actionsForKeyInputs;
+@property (nonatomic, strong) NSMutableDictionary<FLEXKeyInput *, dispatch_block_t> *actionsForKeyInputs;
 
 @property (nonatomic, assign, getter=isPressingShift) BOOL pressingShift;
 @property (nonatomic, assign, getter=isPressingCommand) BOOL pressingCommand;
@@ -165,10 +165,14 @@
                     pressureLevel++;
                 }
                 if (pressureLevel > 0) {
-                    for (UITouch *touch in [event allTouches]) {
-                        double adjustedPressureLevel = pressureLevel * 20 * touch.maximumPossibleForce;
-                        [touch setValue:@(adjustedPressureLevel) forKey:@"_pressure"];
+#if FLEX_AT_LEAST_IOS11_SDK
+                    if (@available(iOS 9.0, *)) {
+                        for (UITouch *touch in [event allTouches]) {
+                            double adjustedPressureLevel = pressureLevel * 20 * touch.maximumPossibleForce;
+                            [touch setValue:@(adjustedPressureLevel) forKey:@"_pressure"];
+                        }
                     }
+#endif
                 }
             }
             
@@ -260,7 +264,7 @@ static const long kFLEXCommandKeyCode = 0xe3;
             dispatch_block_t actionBlock = self.actionsForKeyInputs[exactMatch];
             
             if (!actionBlock) {
-                FLEXKeyInput *shiftMatch = [FLEXKeyInput keyInputForKey:modifiedInput flags:flags&(!UIKeyModifierShift)];
+                FLEXKeyInput *shiftMatch = [FLEXKeyInput keyInputForKey:modifiedInput flags:flags&(~UIKeyModifierShift)];
                 actionBlock = self.actionsForKeyInputs[shiftMatch];
             }
             
@@ -292,7 +296,7 @@ static const long kFLEXCommandKeyCode = 0xe3;
 - (NSString *)keyboardShortcutsDescription
 {
     NSMutableString *description = [NSMutableString string];
-    NSArray *keyInputs = [[self.actionsForKeyInputs allKeys] sortedArrayUsingComparator:^NSComparisonResult(FLEXKeyInput *_Nonnull input1, FLEXKeyInput *_Nonnull input2) {
+    NSArray<FLEXKeyInput *> *keyInputs = [[self.actionsForKeyInputs allKeys] sortedArrayUsingComparator:^NSComparisonResult(FLEXKeyInput *_Nonnull input1, FLEXKeyInput *_Nonnull input2) {
         return [input1.key caseInsensitiveCompare:input2.key];
     }];
     for (FLEXKeyInput *keyInput in keyInputs) {

Classes/Utility/FLEXObjcInternal.h

@@ -0,0 +1,23 @@
+//
+//  FLEXObjcInternal.h
+//  FLEX
+//
+//  Created by Tanner Bennett on 11/1/18.
+//
+
+#import <Foundation/Foundation.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/// @brief Assumes memory is valid and readable.
+/// @discussion objc-internal.h, objc-private.h, and objc-config.h
+/// https://blog.timac.org/2016/1124-testing-if-an-arbitrary-pointer-is-a-valid-objective-c-object/
+/// http://llvm.org/svn/llvm-project/lldb/trunk/examples/summaries/cocoa/objc_runtime.py
+/// https://blog.timac.org/2016/1124-testing-if-an-arbitrary-pointer-is-a-valid-objective-c-object/
+BOOL FLEXPointerIsValidObjcObject(const void * ptr);
+
+#ifdef __cplusplus
+}
+#endif

Classes/Utility/FLEXObjcInternal.mm

@@ -0,0 +1,309 @@
+//
+//  FLEXObjcInternal.mm
+//  FLEX
+//
+//  Created by Tanner Bennett on 11/1/18.
+//
+
+/*
+ * Copyright (c) 2005-2007 Apple Inc.  All Rights Reserved.
+ * 
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+#import "FLEXObjcInternal.h"
+#import <objc/runtime.h>
+#import <malloc/malloc.h>
+
+#define ALWAYS_INLINE inline __attribute__((always_inline))
+#define NEVER_INLINE inline __attribute__((noinline))
+
+// The macros below are copied straight from
+// objc-internal.h, objc-private.h, objc-object.h, and objc-config.h with
+// as few modifications as possible. Changes are noted in boxed comments.
+// https://opensource.apple.com/source/objc4/objc4-723/
+// https://opensource.apple.com/source/objc4/objc4-723/runtime/objc-internal.h.auto.html
+// https://opensource.apple.com/source/objc4/objc4-723/runtime/objc-private.h.auto.html
+// https://opensource.apple.com/source/objc4/objc4-723/runtime/objc-config.h.auto.html
+// https://opensource.apple.com/source/objc4/objc4-723/runtime/objc-object.h.auto.html
+
+/////////////////////
+// objc-internal.h //
+/////////////////////
+
+#if TARGET_OS_OSX && __x86_64__
+// 64-bit Mac - tag bit is LSB
+#   define OBJC_MSB_TAGGED_POINTERS 0
+#else
+// Everything else - tag bit is MSB
+#   define OBJC_MSB_TAGGED_POINTERS 1
+#endif
+
+#define _OBJC_TAG_INDEX_MASK 0x7
+// array slot includes the tag bit itself
+#define _OBJC_TAG_SLOT_COUNT 16
+#define _OBJC_TAG_SLOT_MASK 0xf
+
+#define _OBJC_TAG_EXT_INDEX_MASK 0xff
+// array slot has no extra bits
+#define _OBJC_TAG_EXT_SLOT_COUNT 256
+#define _OBJC_TAG_EXT_SLOT_MASK 0xff
+
+#if OBJC_MSB_TAGGED_POINTERS
+#   define _OBJC_TAG_MASK (1UL<<63)
+#   define _OBJC_TAG_INDEX_SHIFT 60
+#   define _OBJC_TAG_SLOT_SHIFT 60
+#   define _OBJC_TAG_PAYLOAD_LSHIFT 4
+#   define _OBJC_TAG_PAYLOAD_RSHIFT 4
+#   define _OBJC_TAG_EXT_MASK (0xfUL<<60)
+#   define _OBJC_TAG_EXT_INDEX_SHIFT 52
+#   define _OBJC_TAG_EXT_SLOT_SHIFT 52
+#   define _OBJC_TAG_EXT_PAYLOAD_LSHIFT 12
+#   define _OBJC_TAG_EXT_PAYLOAD_RSHIFT 12
+#else
+#   define _OBJC_TAG_MASK 1UL
+#   define _OBJC_TAG_INDEX_SHIFT 1
+#   define _OBJC_TAG_SLOT_SHIFT 0
+#   define _OBJC_TAG_PAYLOAD_LSHIFT 0
+#   define _OBJC_TAG_PAYLOAD_RSHIFT 4
+#   define _OBJC_TAG_EXT_MASK 0xfUL
+#   define _OBJC_TAG_EXT_INDEX_SHIFT 4
+#   define _OBJC_TAG_EXT_SLOT_SHIFT 4
+#   define _OBJC_TAG_EXT_PAYLOAD_LSHIFT 0
+#   define _OBJC_TAG_EXT_PAYLOAD_RSHIFT 12
+#endif
+
+//////////////////////////////////////
+// originally _objc_isTaggedPointer //
+//////////////////////////////////////
+static BOOL flex_isTaggedPointer(const void *ptr) 
+{
+    return ((uintptr_t)ptr & _OBJC_TAG_MASK) == _OBJC_TAG_MASK;
+}
+
+///////////////////
+// objc-config.h //
+///////////////////
+
+// Define SUPPORT_INDEXED_ISA=1 on platforms that store the class in the isa 
+// field as an index into a class table.
+#if __ARM_ARCH_7K__ >= 2
+#   define SUPPORT_INDEXED_ISA 1
+#else
+#   define SUPPORT_INDEXED_ISA 0
+#endif
+
+// Define SUPPORT_PACKED_ISA=1 on platforms that store the class in the isa 
+// field as a maskable pointer with other data around it.
+#if (!__LP64__  ||  TARGET_OS_WIN32  ||  TARGET_OS_SIMULATOR)
+#   define SUPPORT_PACKED_ISA 0
+#else
+#   define SUPPORT_PACKED_ISA 1
+#endif
+
+// Define SUPPORT_NONPOINTER_ISA=1 on any platform that may store something
+// in the isa field that is not a raw pointer.
+#if !SUPPORT_INDEXED_ISA  &&  !SUPPORT_PACKED_ISA
+#   define SUPPORT_NONPOINTER_ISA 0
+#else
+#   define SUPPORT_NONPOINTER_ISA 1
+#endif
+
+////////////////////
+// objc-private.h //
+////////////////////
+
+union isa_t 
+{
+    isa_t() { }
+    isa_t(uintptr_t value) : bits(value) { }
+    
+    Class cls;
+    uintptr_t bits;
+    
+#if SUPPORT_PACKED_ISA
+    
+    // extra_rc must be the MSB-most field (so it matches carry/overflow flags)
+    // nonpointer must be the LSB (fixme or get rid of it)
+    // shiftcls must occupy the same bits that a real class pointer would
+    // bits + RC_ONE is equivalent to extra_rc + 1
+    // RC_HALF is the high bit of extra_rc (i.e. half of its range)
+    
+    // future expansion:
+    // uintptr_t fast_rr : 1;     // no r/r overrides
+    // uintptr_t lock : 2;        // lock for atomic property, @synch
+    // uintptr_t extraBytes : 1;  // allocated with extra bytes
+    
+# if __arm64__
+#   define ISA_MASK        0x0000000ffffffff8ULL
+#   define ISA_MAGIC_MASK  0x000003f000000001ULL
+#   define ISA_MAGIC_VALUE 0x000001a000000001ULL
+    struct {
+        uintptr_t nonpointer        : 1;
+        uintptr_t has_assoc         : 1;
+        uintptr_t has_cxx_dtor      : 1;
+        uintptr_t shiftcls          : 33; // MACH_VM_MAX_ADDRESS 0x1000000000
+        uintptr_t magic             : 6;
+        uintptr_t weakly_referenced : 1;
+        uintptr_t deallocating      : 1;
+        uintptr_t has_sidetable_rc  : 1;
+        uintptr_t extra_rc          : 19;
+#       define RC_ONE   (1ULL<<45)
+#       define RC_HALF  (1ULL<<18)
+    };
+    
+# elif __x86_64__
+#   define ISA_MASK        0x00007ffffffffff8ULL
+#   define ISA_MAGIC_MASK  0x001f800000000001ULL
+#   define ISA_MAGIC_VALUE 0x001d800000000001ULL
+    struct {
+        uintptr_t nonpointer        : 1;
+        uintptr_t has_assoc         : 1;
+        uintptr_t has_cxx_dtor      : 1;
+        uintptr_t shiftcls          : 44; // MACH_VM_MAX_ADDRESS 0x7fffffe00000
+        uintptr_t magic             : 6;
+        uintptr_t weakly_referenced : 1;
+        uintptr_t deallocating      : 1;
+        uintptr_t has_sidetable_rc  : 1;
+        uintptr_t extra_rc          : 8;
+#       define RC_ONE   (1ULL<<56)
+#       define RC_HALF  (1ULL<<7)
+    };
+    
+# else
+#   error unknown architecture for packed isa
+# endif
+    
+    // SUPPORT_PACKED_ISA
+#endif
+    
+    
+#if SUPPORT_INDEXED_ISA
+    
+# if  __ARM_ARCH_7K__ >= 2
+    
+#   define ISA_INDEX_IS_NPI      1
+#   define ISA_INDEX_MASK        0x0001FFFC
+#   define ISA_INDEX_SHIFT       2
+#   define ISA_INDEX_BITS        15
+#   define ISA_INDEX_COUNT       (1 << ISA_INDEX_BITS)
+#   define ISA_INDEX_MAGIC_MASK  0x001E0001
+#   define ISA_INDEX_MAGIC_VALUE 0x001C0001
+    struct {
+        uintptr_t nonpointer        : 1;
+        uintptr_t has_assoc         : 1;
+        uintptr_t indexcls          : 15;
+        uintptr_t magic             : 4;
+        uintptr_t has_cxx_dtor      : 1;
+        uintptr_t weakly_referenced : 1;
+        uintptr_t deallocating      : 1;
+        uintptr_t has_sidetable_rc  : 1;
+        uintptr_t extra_rc          : 7;
+#       define RC_ONE   (1ULL<<25)
+#       define RC_HALF  (1ULL<<6)
+    };
+    
+# else
+#   error unknown architecture for indexed isa
+# endif
+    
+    // SUPPORT_INDEXED_ISA
+#endif
+    
+};
+
+///////////////////
+// objc-object.h //
+///////////////////
+
+////////////////////////////////////////////////
+// originally objc_object::isExtTaggedPointer //
+////////////////////////////////////////////////
+static BOOL flex_isExtTaggedPointer(const void *ptr) 
+{
+    return ((uintptr_t)ptr & _OBJC_TAG_EXT_MASK) == _OBJC_TAG_EXT_MASK;
+}
+
+struct flex_objc_object {
+    isa_t isa;
+};
+
+//////////////////////////////////////////////////////////
+// Returns nil on platforms without nonpointer isa.     //
+// Supporting those platforms would be too complicated  //
+// for such a niche feature anyway. - @NSExceptional    //
+//                                                      //
+// Code modified from objc_object::ISA() on 11/04/18    //
+//////////////////////////////////////////////////////////
+static id flex_getIsa(const flex_objc_object *object) {
+#if SUPPORT_NONPOINTER_ISA
+    if (object->isa.nonpointer) {
+        return object_getClass((__bridge id)object);
+    }
+    return (__bridge Class)(void *)object->isa.bits;
+#else
+    return nil;
+#endif
+}
+
+/////////////////////////////////////
+// FLEXObjectInternal              //
+// No Apple code beyond this point //
+/////////////////////////////////////
+
+extern "C" {
+/// Assumes memory is valid and readable.
+/// https://blog.timac.org/2016/1124-testing-if-an-arbitrary-pointer-is-a-valid-objective-c-object/
+BOOL FLEXPointerIsValidObjcObject(const void * ptr)
+{
+    uintptr_t pointer = (uintptr_t)ptr;
+    
+    if (!ptr) {
+        return NO;
+    }
+    
+    // Tagged pointers have 0x1 set, no other valid pointers do
+    // objc-internal.h -> _objc_isTaggedPointer()
+    if (flex_isTaggedPointer(ptr) || flex_isExtTaggedPointer(ptr)) {
+        return YES;
+    }
+    
+    // Check pointer alignment
+    if ((pointer % sizeof(uintptr_t)) != 0) {
+        return NO;
+    }
+    
+    // From LLDB:
+    // Pointers in a class_t will only have bits 0 through 46 set,
+    // so if any pointer has bits 47 through 63 high, we know that this is not a valid isa
+    // http://llvm.org/svn/llvm-project/lldb/trunk/examples/summaries/cocoa/objc_runtime.py
+    if ((pointer & 0xFFFF800000000000) != 0) {
+        return NO;
+    }
+    
+    // http://www.sealiesoftware.com/blog/archive/2013/09/24/objc_explain_Non-pointer_isa.html :
+    if (flex_getIsa((const flex_objc_object *)ptr)) {
+        return YES;
+    }
+    
+    return NO;
+}
+    
+}

Classes/Utility/FLEXResources.h

@@ -18,6 +18,7 @@
 + (UIImage *)listIcon;
 + (UIImage *)moveIcon;
 + (UIImage *)selectIcon;
++ (UIImage *)checkerPattern;
 
 + (UIImage *)jsonIcon;
 + (UIImage *)textPlainIcon;

Classes/Utility/FLEXRuntimeUtility.h

@@ -25,10 +25,44 @@ extern NSString *const kFLEXUtilityAttributeWeak;
 extern NSString *const kFLEXUtilityAttributeGarbageCollectable;
 extern NSString *const kFLEXUtilityAttributeOldStyleTypeEncoding;
 
+typedef NS_ENUM(char, FLEXTypeEncoding)
+{
+    FLEXTypeEncodingUnknown          = '?',
+    FLEXTypeEncodingChar             = 'c',
+    FLEXTypeEncodingInt              = 'i',
+    FLEXTypeEncodingShort            = 's',
+    FLEXTypeEncodingLong             = 'l',
+    FLEXTypeEncodingLongLong         = 'q',
+    FLEXTypeEncodingUnsignedChar     = 'C',
+    FLEXTypeEncodingUnsignedInt      = 'I',
+    FLEXTypeEncodingUnsignedShort    = 'S',
+    FLEXTypeEncodingUnsignedLong     = 'L',
+    FLEXTypeEncodingUnsignedLongLong = 'Q',
+    FLEXTypeEncodingFloat            = 'f',
+    FLEXTypeEncodingDouble           = 'd',
+    FLEXTypeEncodingCBool            = 'B',
+    FLEXTypeEncodingVoid             = 'v',
+    FLEXTypeEncodingCString          = '*',
+    FLEXTypeEncodingObjcObject       = '@',
+    FLEXTypeEncodingObjcClass        = '#',
+    FLEXTypeEncodingSelector         = ':',
+    FLEXTypeEncodingArray            = '[',
+    FLEXTypeEncodingStruct           = '{',
+    FLEXTypeEncodingUnion            = '(',
+    FLEXTypeEncodingBitField         = 'b',
+    FLEXTypeEncodingPointer          = '^',
+    FLEXTypeEncodingConst            = 'r'
+};
+
 #define FLEXEncodeClass(class) ("@\"" #class "\"")
 
 @interface FLEXRuntimeUtility : NSObject
 
+// General Helpers
++ (BOOL)pointerIsValidObjcObject:(const void *)pointer;
+/// Unwraps raw pointers to objects stored in NSValue, and re-boxes C strings into NSStrings.
++ (id)potentiallyUnwrapBoxedPointer:(id)returnedObjectOrNil type:(const FLEXTypeEncoding *)returnType;
+
 // Property Helpers
 + (NSString *)prettyNameForProperty:(objc_property_t)property;
 + (NSString *)typeEncodingForProperty:(objc_property_t)property;
@@ -37,7 +71,7 @@ extern NSString *const kFLEXUtilityAttributeOldStyleTypeEncoding;
 + (NSString *)fullDescriptionForProperty:(objc_property_t)property;
 + (id)valueForProperty:(objc_property_t)property onObject:(id)object;
 + (NSString *)descriptionForIvarOrPropertyValue:(id)value;
-+ (void)tryAddPropertyWithName:(const char *)name attributes:(NSDictionary *)attributePairs toClass:(__unsafe_unretained Class)theClass;
++ (void)tryAddPropertyWithName:(const char *)name attributes:(NSDictionary<NSString *, NSString *> *)attributePairs toClass:(__unsafe_unretained Class)theClass;
 
 // Ivar Helpers
 + (NSString *)prettyNameForIvar:(Ivar)ivar;
@@ -47,6 +81,7 @@ extern NSString *const kFLEXUtilityAttributeOldStyleTypeEncoding;
 // Method Helpers
 + (NSString *)prettyNameForMethod:(Method)method isClassMethod:(BOOL)isClassMethod;
 + (NSArray *)prettyArgumentComponentsForMethod:(Method)method;
++ (FLEXTypeEncoding *)returnTypeForMethod:(Method)method;
 
 // Method Calling/Field Editing
 + (id)performSelector:(SEL)selector onObject:(id)object withArguments:(NSArray *)arguments error:(NSError * __autoreleasing *)error;

Classes/Utility/FLEXRuntimeUtility.m

@@ -8,6 +8,7 @@
 
 #import <UIKit/UIKit.h>
 #import "FLEXRuntimeUtility.h"
+#import "FLEXObjcInternal.h"
 
 // See https://developer.apple.com/library/ios/documentation/Cocoa/Conceptual/ObjCRuntimeGuide/Articles/ocrtPropertyIntrospection.html#//apple_ref/doc/uid/TP40008048-CH101-SW6
 NSString *const kFLEXUtilityAttributeTypeEncoding = @"T";
@@ -36,6 +37,57 @@ const unsigned int kFLEXNumberOfImplicitArgs = 2;
 @implementation FLEXRuntimeUtility
 
 
+#pragma mark - General Helpers (Public)
+
++ (BOOL)pointerIsValidObjcObject:(const void *)pointer
+{
+    return FLEXPointerIsValidObjcObject(pointer);
+}
+
++ (id)potentiallyUnwrapBoxedPointer:(id)returnedObjectOrNil type:(const FLEXTypeEncoding *)returnType
+{
+    if (!returnedObjectOrNil) {
+        return nil;
+    }
+    
+    NSInteger i = 0;
+    if (returnType[i] == FLEXTypeEncodingConst) {
+        i++;
+    }
+    
+    BOOL returnsObjectOrClass = returnType[i] == FLEXTypeEncodingObjcObject ||
+                                returnType[i] == FLEXTypeEncodingObjcClass;
+    BOOL returnsVoidPointer   = returnType[i] == FLEXTypeEncodingPointer &&
+                                returnType[i+1] == FLEXTypeEncodingVoid;
+    BOOL returnsCString       = returnType[i] == FLEXTypeEncodingCString;
+    
+    // If we got back an NSValue and the return type is not an object,
+    // we check to see if the pointer is of a valid object. If not,
+    // we just display the NSValue.
+    if (!returnsObjectOrClass) {
+        // Can only be NSValue since return type is not an object,
+        // so we bail if this doesn't add up
+        if (![returnedObjectOrNil isKindOfClass:[NSValue class]]) {
+            return returnedObjectOrNil;
+        }
+        
+        NSValue *value = (NSValue *)returnedObjectOrNil;
+        
+        if (returnsCString) {
+            // Wrap char * in NSString
+            const char *string = (const char *)value.pointerValue;
+            returnedObjectOrNil = [NSString stringWithCString:string encoding:NSUTF8StringEncoding];
+        } else if (returnsVoidPointer) {
+            // Cast valid objects disguised as void * to id
+            if ([FLEXRuntimeUtility pointerIsValidObjcObject:value.pointerValue]) {
+                returnedObjectOrNil = (__bridge id)value.pointerValue;
+            }
+        }
+    }
+    
+    return returnedObjectOrNil;
+}
+
 #pragma mark - Property Helpers (Public)
 
 + (NSString *)prettyNameForProperty:(objc_property_t)property
@@ -48,7 +100,7 @@ const unsigned int kFLEXNumberOfImplicitArgs = 2;
 
 + (NSString *)typeEncodingForProperty:(objc_property_t)property
 {
-    NSDictionary *attributesDictionary = [self attributesDictionaryForProperty:property];
+    NSDictionary<NSString *, NSString *> *attributesDictionary = [self attributesDictionaryForProperty:property];
     return attributesDictionary[kFLEXUtilityAttributeTypeEncoding];
 }
 
@@ -73,8 +125,8 @@ const unsigned int kFLEXNumberOfImplicitArgs = 2;
 
 + (NSString *)fullDescriptionForProperty:(objc_property_t)property
 {
-    NSDictionary *attributesDictionary = [self attributesDictionaryForProperty:property];
-    NSMutableArray *attributesStrings = [NSMutableArray array];
+    NSDictionary<NSString *, NSString *> *attributesDictionary = [self attributesDictionaryForProperty:property];
+    NSMutableArray<NSString *> *attributesStrings = [NSMutableArray array];
     
     // Atomicity
     if (attributesDictionary[kFLEXUtilityAttributeNonAtomic]) {
@@ -155,10 +207,14 @@ const unsigned int kFLEXNumberOfImplicitArgs = 2;
         }
     }
     
-    if (!description) {
-        // Single line display - replace newlines and tabs with spaces.
-        description = [[value description] stringByReplacingOccurrencesOfString:@"\n" withString:@" "];
-        description = [description stringByReplacingOccurrencesOfString:@"\t" withString:@" "];
+    @try {
+        if (!description) {
+            // Single line display - replace newlines and tabs with spaces.
+            description = [[value description] stringByReplacingOccurrencesOfString:@"\n" withString:@" "];
+            description = [description stringByReplacingOccurrencesOfString:@"\t" withString:@" "];
+        }
+    } @catch (NSException *e) {
+        description = [@"Thrown: " stringByAppendingString:e.reason ?: @"(nil exception reason)"];
     }
     
     if (!description) {
@@ -168,7 +224,7 @@ const unsigned int kFLEXNumberOfImplicitArgs = 2;
     return description;
 }
 
-+ (void)tryAddPropertyWithName:(const char *)name attributes:(NSDictionary *)attributePairs toClass:(__unsafe_unretained Class)theClass
++ (void)tryAddPropertyWithName:(const char *)name attributes:(NSDictionary<NSString *, NSString *> *)attributePairs toClass:(__unsafe_unretained Class)theClass
 {
     objc_property_t property = class_getProperty(theClass, name);
     if (!property) {
@@ -262,7 +318,7 @@ const unsigned int kFLEXNumberOfImplicitArgs = 2;
     NSString *readableReturnType = [self readableTypeForEncoding:@(returnType)];
     free(returnType);
     NSString *prettyName = [NSString stringWithFormat:@"%@ (%@)", methodTypeString, readableReturnType];
-    NSArray *components = [self prettyArgumentComponentsForMethod:method];
+    NSArray<NSString *> *components = [self prettyArgumentComponentsForMethod:method];
     if ([components count] > 0) {
         prettyName = [prettyName stringByAppendingString:[components componentsJoinedByString:@" "]];
     } else {
@@ -272,25 +328,38 @@ const unsigned int kFLEXNumberOfImplicitArgs = 2;
     return prettyName;
 }
 
-+ (NSArray *)prettyArgumentComponentsForMethod:(Method)method
++ (NSArray<NSString *> *)prettyArgumentComponentsForMethod:(Method)method
 {
-    NSMutableArray *components = [NSMutableArray array];
+    NSMutableArray<NSString *> *components = [NSMutableArray array];
     
     NSString *selectorName = NSStringFromSelector(method_getName(method));
-    NSArray *selectorComponents = [selectorName componentsSeparatedByString:@":"];
-    unsigned int numberOfArguments = method_getNumberOfArguments(method);
+    NSMutableArray<NSString *> *selectorComponents = [[selectorName componentsSeparatedByString:@":"] mutableCopy];
     
-    for (unsigned int argIndex = kFLEXNumberOfImplicitArgs; argIndex < numberOfArguments; argIndex++) {
-        char *argType = method_copyArgumentType(method, argIndex);
-        NSString *readableArgType = [self readableTypeForEncoding:@(argType)];
+    // this is a workaround cause method_getNumberOfArguments() returns wrong number for some methods
+    if (selectorComponents.count == 1) {
+        return @[];
+    }
+    
+    if ([selectorComponents.lastObject isEqualToString:@""]) {
+        [selectorComponents removeLastObject];
+    }
+    
+    for (unsigned int argIndex = 0; argIndex < selectorComponents.count; argIndex++) {
+        char *argType = method_copyArgumentType(method, argIndex + kFLEXNumberOfImplicitArgs);
+        NSString *readableArgType = (argType != NULL) ? [self readableTypeForEncoding:@(argType)] : nil;
         free(argType);
-        NSString *prettyComponent = [NSString stringWithFormat:@"%@:(%@) ", [selectorComponents objectAtIndex:argIndex - kFLEXNumberOfImplicitArgs], readableArgType];
+        NSString *prettyComponent = [NSString stringWithFormat:@"%@:(%@) ", [selectorComponents objectAtIndex:argIndex], readableArgType];
         [components addObject:prettyComponent];
     }
     
     return components;
 }
 
++ (FLEXTypeEncoding *)returnTypeForMethod:(Method)method
+{
+    return (FLEXTypeEncoding *)method_copyReturnType(method);
+}
+
 
 #pragma mark - Method Calling/Field Editing (Public)
 
@@ -299,7 +368,7 @@ const unsigned int kFLEXNumberOfImplicitArgs = 2;
     // Bail if the object won't respond to this selector.
     if (![object respondsToSelector:selector]) {
         if (error) {
-            NSDictionary *userInfo = @{ NSLocalizedDescriptionKey : [NSString stringWithFormat:@"%@ does not respond to the selector %@", object, NSStringFromSelector(selector)]};
+            NSDictionary<NSString *, id> *userInfo = @{ NSLocalizedDescriptionKey : [NSString stringWithFormat:@"%@ does not respond to the selector %@", object, NSStringFromSelector(selector)]};
             *error = [NSError errorWithDomain:FLEXRuntimeUtilityErrorDomain code:FLEXRuntimeUtilityErrorCodeDoesNotRecognizeSelector userInfo:userInfo];
         }
         return nil;
@@ -335,59 +404,71 @@ const unsigned int kFLEXNumberOfImplicitArgs = 2;
                 // Ensure that the type encoding on the NSValue matches the type encoding of the argument in the method signature
                 if (strcmp([argumentValue objCType], typeEncodingCString) != 0) {
                     if (error) {
-                        NSDictionary *userInfo = @{ NSLocalizedDescriptionKey : [NSString stringWithFormat:@"Type encoding mismatch for agrument at index %lu. Value type: %s; Method argument type: %s.", (unsigned long)argumentsArrayIndex, [argumentValue objCType], typeEncodingCString]};
+                        NSDictionary<NSString *, id> *userInfo = @{ NSLocalizedDescriptionKey : [NSString stringWithFormat:@"Type encoding mismatch for agrument at index %lu. Value type: %s; Method argument type: %s.", (unsigned long)argumentsArrayIndex, [argumentValue objCType], typeEncodingCString]};
                         *error = [NSError errorWithDomain:FLEXRuntimeUtilityErrorDomain code:FLEXRuntimeUtilityErrorCodeArgumentTypeMismatch userInfo:userInfo];
                     }
                     return nil;
                 }
                 
-                NSUInteger bufferSize = 0;
                 @try {
+                    NSUInteger bufferSize = 0;
+                    
                     // NSGetSizeAndAlignment barfs on type encoding for bitfields.
                     NSGetSizeAndAlignment(typeEncodingCString, &bufferSize, NULL);
+                    
+                    if (bufferSize > 0) {
+                        void *buffer = calloc(bufferSize, 1);
+                        [argumentValue getValue:buffer];
+                        [invocation setArgument:buffer atIndex:argumentIndex];
+                        free(buffer);
+                    }
                 } @catch (NSException *exception) { }
-                
-                if (bufferSize > 0) {
-                    void *buffer = calloc(bufferSize, 1);
-                    [argumentValue getValue:buffer];
-                    [invocation setArgument:buffer atIndex:argumentIndex];
-                    free(buffer);
-                }
             }
         }
     }
     
     // Try to invoke the invocation but guard against an exception being thrown.
-    BOOL successfullyInvoked = NO;
+    id returnObject = nil;
     @try {
         // Some methods are not fit to be called...
         // Looking at you -[UIResponder(UITextInputAdditions) _caretRect]
         [invocation invoke];
-        successfullyInvoked = YES;
-    } @catch (NSException *exception) {
-        // Bummer...
-        if (error) {
-            NSDictionary *userInfo = @{ NSLocalizedDescriptionKey : [NSString stringWithFormat:@"Exception thrown while performing selector %@ on object %@", NSStringFromSelector(selector), object]};
-            *error = [NSError errorWithDomain:FLEXRuntimeUtilityErrorDomain code:FLEXRuntimeUtilityErrorCodeInvocationFailed userInfo:userInfo];
-        }
-    }
-    
-    // Retreive the return value and box if necessary.
-    id returnObject = nil;
-    if (successfullyInvoked) {
+        
+        // Retreive the return value and box if necessary.
         const char *returnType = [methodSignature methodReturnType];
+        
         if (returnType[0] == @encode(id)[0] || returnType[0] == @encode(Class)[0]) {
+            // Return value is an object.
             __unsafe_unretained id objectReturnedFromMethod = nil;
             [invocation getReturnValue:&objectReturnedFromMethod];
             returnObject = objectReturnedFromMethod;
         } else if (returnType[0] != @encode(void)[0]) {
+            // Will use arbitrary buffer for return value and box it.
             void *returnValue = malloc([methodSignature methodReturnLength]);
+            
             if (returnValue) {
                 [invocation getReturnValue:returnValue];
                 returnObject = [self valueForPrimitivePointer:returnValue objCType:returnType];
                 free(returnValue);
             }
         }
+    } @catch (NSException *exception) {
+        // Bummer...
+        if (error) {
+            // "… on <class>" / "… on instance of <class>"
+            NSString *class = NSStringFromClass([object class]);
+            NSString *calledOn = object == [object class] ? class : [@"an instance of " stringByAppendingString:class];
+            
+            NSString *message = [NSString stringWithFormat:@"Exception '%@' thrown while performing selector '%@' on %@.\nReason:\n\n%@",
+                                 exception.name,
+                                 NSStringFromSelector(selector),
+                                 calledOn,
+                                 exception.reason];
+            
+            *error = [NSError errorWithDomain:FLEXRuntimeUtilityErrorDomain
+                                         code:FLEXRuntimeUtilityErrorCodeInvocationFailed
+                                     userInfo:@{ NSLocalizedDescriptionKey : message }];
+        }
     }
     
     return returnObject;
@@ -550,12 +631,12 @@ const unsigned int kFLEXNumberOfImplicitArgs = 2;
 
 #pragma mark - Internal Helpers
 
-+ (NSDictionary *)attributesDictionaryForProperty:(objc_property_t)property
++ (NSDictionary<NSString *, NSString *> *)attributesDictionaryForProperty:(objc_property_t)property
 {
     NSString *attributes = @(property_getAttributes(property));
     // Thanks to MAObjcRuntime for inspiration here.
-    NSArray *attributePairs = [attributes componentsSeparatedByString:@","];
-    NSMutableDictionary *attributesDictionary = [NSMutableDictionary dictionaryWithCapacity:[attributePairs count]];
+    NSArray<NSString *> *attributePairs = [attributes componentsSeparatedByString:@","];
+    NSMutableDictionary<NSString *, NSString *> *attributesDictionary = [NSMutableDictionary dictionaryWithCapacity:[attributePairs count]];
     for (NSString *attributePair in attributePairs) {
         [attributesDictionary setObject:[attributePair substringFromIndex:1] forKey:[attributePair substringToIndex:1]];
     }

Classes/Utility/FLEXUtility.h

@@ -6,12 +6,20 @@
 //  Copyright (c) 2014 Flipboard. All rights reserved.
 //
 
+#import <Availability.h>
+#import <AvailabilityInternal.h>
 #import <Foundation/Foundation.h>
 #import <UIKit/UIKit.h>
 #import <objc/runtime.h>
 
 #define FLEXFloor(x) (floor([[UIScreen mainScreen] scale] * (x)) / [[UIScreen mainScreen] scale])
 
+#if defined(__IPHONE_11_0)
+#define FLEX_AT_LEAST_IOS11_SDK (__IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_11_0)
+#else
+#define FLEX_AT_LEAST_IOS11_SDK NO
+#endif
+
 @interface FLEXUtility : NSObject
 
 + (UIColor *)consistentRandomColorForObject:(id)object;
@@ -35,12 +43,13 @@
 + (UIImage *)thumbnailedImageWithMaxPixelDimension:(NSInteger)dimension fromImageData:(NSData *)data;
 + (NSString *)stringFromRequestDuration:(NSTimeInterval)duration;
 + (NSString *)statusCodeStringFromURLResponse:(NSURLResponse *)response;
-+ (NSDictionary *)dictionaryFromQuery:(NSString *)query;
++ (BOOL)isErrorStatusCodeFromURLResponse:(NSURLResponse *)response;
++ (NSDictionary<NSString *, id> *)dictionaryFromQuery:(NSString *)query;
 + (NSString *)prettyJSONStringFromData:(NSData *)data;
 + (BOOL)isValidJSONData:(NSData *)data;
 + (NSData *)inflatedDataFromCompressedData:(NSData *)compressedData;
 
-+ (NSArray *)allWindows;
++ (NSArray<UIWindow *> *)allWindows;
 
 // Swizzling utilities
 

Classes/Utility/FLEXUtility.m

@@ -138,7 +138,7 @@
 
 + (NSString *)stringByEscapingHTMLEntitiesInString:(NSString *)originalString
 {
-    static NSDictionary *escapingDictionary = nil;
+    static NSDictionary<NSString *, NSString *> *escapingDictionary = nil;
     static NSRegularExpression *regex = nil;
     static dispatch_once_t onceToken;
     dispatch_once(&onceToken, ^{
@@ -156,7 +156,7 @@
     
     NSMutableString *mutableString = [originalString mutableCopy];
     
-    NSArray *matches = [regex matchesInString:mutableString options:0 range:NSMakeRange(0, [mutableString length])];
+    NSArray<NSTextCheckingResult *> *matches = [regex matchesInString:mutableString options:0 range:NSMakeRange(0, [mutableString length])];
     for (NSTextCheckingResult *result in [matches reverseObjectEnumerator]) {
         NSString *foundString = [mutableString substringWithRange:result.range];
         NSString *replacementString = escapingDictionary[foundString];
@@ -170,7 +170,7 @@
 
 + (UIInterfaceOrientationMask)infoPlistSupportedInterfaceOrientationsMask
 {
-    NSArray *supportedOrientations = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"UISupportedInterfaceOrientations"];
+    NSArray<NSString *> *supportedOrientations = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"UISupportedInterfaceOrientations"];
     UIInterfaceOrientationMask supportedOrientationsMask = 0;
     if ([supportedOrientations containsObject:@"UIInterfaceOrientationPortrait"]) {
         supportedOrientationsMask |= UIInterfaceOrientationMaskPortrait;
@@ -203,9 +203,9 @@
     UIImage *thumbnail = nil;
     CGImageSourceRef imageSource = CGImageSourceCreateWithData((__bridge CFDataRef)data, 0);
     if (imageSource) {
-        NSDictionary *options = @{ (__bridge id)kCGImageSourceCreateThumbnailWithTransform : @YES,
-                                   (__bridge id)kCGImageSourceCreateThumbnailFromImageAlways : @YES,
-                                   (__bridge id)kCGImageSourceThumbnailMaxPixelSize : @(dimension) };
+        NSDictionary<NSString *, id> *options = @{ (__bridge id)kCGImageSourceCreateThumbnailWithTransform : @YES,
+                                                   (__bridge id)kCGImageSourceCreateThumbnailFromImageAlways : @YES,
+                                                   (__bridge id)kCGImageSourceThumbnailMaxPixelSize : @(dimension) };
 
         CGImageRef scaledImageRef = CGImageSourceCreateThumbnailAtIndex(imageSource, 0, (__bridge CFDictionaryRef)options);
         if (scaledImageRef) {
@@ -249,15 +249,27 @@
     return httpResponseString;
 }
 
-+ (NSDictionary *)dictionaryFromQuery:(NSString *)query
++ (BOOL)isErrorStatusCodeFromURLResponse:(NSURLResponse *)response {
+    NSIndexSet *errorStatusCodes = [NSIndexSet indexSetWithIndexesInRange:NSMakeRange(400, 200)];
+    
+    if ([response isKindOfClass:[NSHTTPURLResponse class]]) {
+        NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *)response;
+        return [errorStatusCodes containsIndex:httpResponse.statusCode];
+    }
+    
+    return NO;
+}
+
+
++ (NSDictionary<NSString *, id> *)dictionaryFromQuery:(NSString *)query
 {
-    NSMutableDictionary *queryDictionary = [NSMutableDictionary dictionary];
+    NSMutableDictionary<NSString *, id> *queryDictionary = [NSMutableDictionary dictionary];
 
     // [a=1, b=2, c=3]
-    NSArray *queryComponents = [query componentsSeparatedByString:@"&"];
+    NSArray<NSString *> *queryComponents = [query componentsSeparatedByString:@"&"];
     for (NSString *keyValueString in queryComponents) {
         // [a, 1]
-        NSArray *components = [keyValueString componentsSeparatedByString:@"="];
+        NSArray<NSString *> *components = [keyValueString componentsSeparatedByString:@"="];
         if ([components count] == 2) {
             NSString *key = [[components firstObject] stringByRemovingPercentEncoding];
             id value = [[components lastObject] stringByRemovingPercentEncoding];
@@ -338,12 +350,12 @@
     return inflatedData;
 }
 
-+ (NSArray *)allWindows
++ (NSArray<UIWindow *> *)allWindows
 {
     BOOL includeInternalWindows = YES;
     BOOL onlyVisibleWindows = NO;
 
-    NSArray *allWindowsComponents = @[@"al", @"lWindo", @"wsIncl", @"udingInt", @"ernalWin", @"dows:o", @"nlyVisi", @"bleWin", @"dows:"];
+    NSArray<NSString *> *allWindowsComponents = @[@"al", @"lWindo", @"wsIncl", @"udingInt", @"ernalWin", @"dows:o", @"nlyVisi", @"bleWin", @"dows:"];
     SEL allWindowsSelector = NSSelectorFromString([allWindowsComponents componentsJoinedByString:@""]);
 
     NSMethodSignature *methodSignature = [[UIWindow class] methodSignatureForSelector:allWindowsSelector];
@@ -355,7 +367,7 @@
     [invocation setArgument:&onlyVisibleWindows atIndex:3];
     [invocation invoke];
 
-    __unsafe_unretained NSArray *windows = nil;
+    __unsafe_unretained NSArray<UIWindow *> *windows = nil;
     [invocation getReturnValue:&windows];
     return windows;
 }

Classes/ViewHierarchy/FLEXHierarchyTableViewCell.h

@@ -14,5 +14,6 @@
 
 @property (nonatomic, assign) NSInteger viewDepth;
 @property (nonatomic, strong) UIColor *viewColor;
+@property (nonatomic, strong) UIView *viewBackgroundColorView;
 
 @end

Classes/ViewHierarchy/FLEXHierarchyTableViewCell.m

@@ -38,25 +38,37 @@
         self.textLabel.font = [UIFont fontWithName:@"HelveticaNeue-Medium" size:14.0];
         self.detailTextLabel.font = [FLEXUtility defaultTableViewCellLabelFont];
         self.accessoryType = UITableViewCellAccessoryDetailButton;
+        
+        self.viewBackgroundColorView = [[UIView alloc] init];
+        self.viewBackgroundColorView.clipsToBounds = YES;
+        self.viewBackgroundColorView.layer.borderColor = [UIColor blackColor].CGColor;
+        self.viewBackgroundColorView.layer.borderWidth = 1.0f;
+        [self.contentView addSubview:self.viewBackgroundColorView];
     }
     return self;
 }
 
 - (void)setHighlighted:(BOOL)highlighted animated:(BOOL)animated
 {
+    UIColor *originalColour = self.viewBackgroundColorView.backgroundColor;
     [super setHighlighted:highlighted animated:animated];
     
     // UITableViewCell changes all subviews in the contentView to backgroundColor = clearColor.
     // We want to preserve the hierarchy background color when highlighted.
     self.depthIndicatorView.backgroundColor = [FLEXUtility hierarchyIndentPatternColor];
+    
+    self.viewBackgroundColorView.backgroundColor = originalColour;
 }
 
 - (void)setSelected:(BOOL)selected animated:(BOOL)animated
 {
+    UIColor *originalColour = self.viewBackgroundColorView.backgroundColor;
     [super setSelected:selected animated:animated];
     
     // See setHighlighted above.
     self.depthIndicatorView.backgroundColor = [FLEXUtility hierarchyIndentPatternColor];
+    
+    self.viewBackgroundColorView.backgroundColor = originalColour;
 }
 
 - (void)layoutSubviews
@@ -65,6 +77,7 @@
     
     const CGFloat kContentPadding = 10.0;
     const CGFloat kDepthIndicatorWidthMultiplier = 4.0;
+    const CGFloat kViewBackgroundColourDimension = 20;
     
     CGRect depthIndicatorFrame = CGRectMake(kContentPadding, 0, self.viewDepth * kDepthIndicatorWidthMultiplier, self.contentView.bounds.size.height);
     self.depthIndicatorView.frame = depthIndicatorFrame;
@@ -77,7 +90,7 @@
     CGRect textLabelFrame = self.textLabel.frame;
     CGFloat textOriginX = CGRectGetMaxX(circleFrame) + 4.0;
     textLabelFrame.origin.x = textOriginX;
-    textLabelFrame.size.width = CGRectGetMaxX(self.contentView.bounds) - kContentPadding - textOriginX;
+    textLabelFrame.size.width = CGRectGetMaxX(self.contentView.frame) - kContentPadding - textOriginX - kViewBackgroundColourDimension;
     self.textLabel.frame = textLabelFrame;
     
     CGRect detailTextLabelFrame = self.detailTextLabel.frame;
@@ -85,6 +98,15 @@
     detailTextLabelFrame.origin.x = detailOriginX;
     detailTextLabelFrame.size.width = CGRectGetMaxX(self.contentView.bounds) - kContentPadding - detailOriginX;
     self.detailTextLabel.frame = detailTextLabelFrame;
+    
+    CGRect viewBackgroundColourViewFrame = self.textLabel.frame;
+    viewBackgroundColourViewFrame.size.width = kViewBackgroundColourDimension;
+    viewBackgroundColourViewFrame.size.height = kViewBackgroundColourDimension;
+    viewBackgroundColourViewFrame.origin.x = CGRectGetMaxX(self.textLabel.frame) + kContentPadding;
+    viewBackgroundColourViewFrame.origin.y = ABS(CGRectGetHeight(self.contentView.frame) -  CGRectGetHeight(viewBackgroundColourViewFrame)) / 2;
+    
+    self.viewBackgroundColorView.frame = viewBackgroundColourViewFrame;
+    self.viewBackgroundColorView.layer.cornerRadius = kViewBackgroundColourDimension / 2;
 }
 
 - (void)setViewColor:(UIColor *)viewColor

Classes/ViewHierarchy/FLEXHierarchyTableViewController.h

@@ -12,7 +12,7 @@
 
 @interface FLEXHierarchyTableViewController : UITableViewController
 
-- (id)initWithViews:(NSArray *)allViews viewsAtTap:(NSArray *)viewsAtTap selectedView:(UIView *)selectedView depths:(NSDictionary *)depthsForViews;
+- (instancetype)initWithViews:(NSArray<UIView *> *)allViews viewsAtTap:(NSArray<UIView *> *)viewsAtTap selectedView:(UIView *)selectedView depths:(NSDictionary<NSValue *, NSNumber *> *)depthsForViews;
 
 @property (nonatomic, weak) id <FLEXHierarchyTableViewControllerDelegate> delegate;
 

Classes/ViewHierarchy/FLEXHierarchyTableViewController.m

@@ -11,17 +11,18 @@
 #import "FLEXHierarchyTableViewCell.h"
 #import "FLEXObjectExplorerViewController.h"
 #import "FLEXObjectExplorerFactory.h"
+#import "FLEXResources.h"
 
 static const NSInteger kFLEXHierarchyScopeViewsAtTapIndex = 0;
 static const NSInteger kFLEXHierarchyScopeFullHierarchyIndex = 1;
 
 @interface FLEXHierarchyTableViewController () <UISearchBarDelegate>
 
-@property (nonatomic, strong) NSArray *allViews;
-@property (nonatomic, strong) NSDictionary *depthsForViews;
-@property (nonatomic, strong) NSArray *viewsAtTap;
+@property (nonatomic, strong) NSArray<UIView *> *allViews;
+@property (nonatomic, strong) NSDictionary<NSValue *, NSNumber *> *depthsForViews;
+@property (nonatomic, strong) NSArray<UIView *> *viewsAtTap;
 @property (nonatomic, strong) UIView *selectedView;
-@property (nonatomic, strong) NSArray *displayedViews;
+@property (nonatomic, strong) NSArray<UIView *> *displayedViews;
 
 @property (nonatomic, strong) UISearchBar *searchBar;
 
@@ -29,7 +30,7 @@ static const NSInteger kFLEXHierarchyScopeFullHierarchyIndex = 1;
 
 @implementation FLEXHierarchyTableViewController
 
-- (id)initWithViews:(NSArray *)allViews viewsAtTap:(NSArray *)viewsAtTap selectedView:(UIView *)selectedView depths:(NSDictionary *)depthsForViews
+- (instancetype)initWithViews:(NSArray<UIView *> *)allViews viewsAtTap:(NSArray<UIView *> *)viewsAtTap selectedView:(UIView *)selectedView depths:(NSDictionary<NSValue *, NSNumber *> *)depthsForViews
 {
     self = [super initWithStyle:UITableViewStylePlain];
     if (self) {
@@ -92,7 +93,7 @@ static const NSInteger kFLEXHierarchyScopeFullHierarchyIndex = 1;
 
 - (void)updateDisplayedViews
 {
-    NSArray *candidateViews = nil;
+    NSArray<UIView *> *candidateViews = nil;
     if ([self showScopeBar]) {
         if (self.searchBar.selectedScopeButtonIndex == kFLEXHierarchyScopeViewsAtTapIndex) {
             candidateViews = self.viewsAtTap;
@@ -104,7 +105,7 @@ static const NSInteger kFLEXHierarchyScopeFullHierarchyIndex = 1;
     }
     
     if ([self.searchBar.text length] > 0) {
-        self.displayedViews = [candidateViews filteredArrayUsingPredicate:[NSPredicate predicateWithBlock:^BOOL(UIView *candidateView, NSDictionary *bindings) {
+        self.displayedViews = [candidateViews filteredArrayUsingPredicate:[NSPredicate predicateWithBlock:^BOOL(UIView *candidateView, NSDictionary<NSString *, id> *bindings) {
             NSString *title = [FLEXUtility descriptionForView:candidateView includingFrame:NO];
             NSString *candidateViewPointerAddress = [NSString stringWithFormat:@"%p", candidateView];
             BOOL matchedViewPointerAddress = [candidateViewPointerAddress rangeOfString:self.searchBar.text options:NSCaseInsensitiveSearch].location != NSNotFound;
@@ -180,6 +181,20 @@ static const NSInteger kFLEXHierarchyScopeFullHierarchyIndex = 1;
         cell.detailTextLabel.textColor = [UIColor blackColor];
     }
     
+    // Use a pattern-based colour to simplify application of the checker pattern.
+    static UIColor *checkerPatternColour = nil;
+    static dispatch_once_t once;
+    dispatch_once(&once, ^{
+        checkerPatternColour = [UIColor colorWithPatternImage:[FLEXResources checkerPattern]];
+    });
+    
+    UIColor *viewColour = view.backgroundColor;
+    if (!viewColour || [viewColour isEqual:[UIColor clearColor]]) {
+        cell.viewBackgroundColorView.backgroundColor = checkerPatternColour;
+    } else {
+        cell.viewBackgroundColorView.backgroundColor = viewColour;
+    }
+    
     return cell;
 }
 

Classes/ViewHierarchy/FLEXImagePreviewViewController.m

@@ -47,7 +47,7 @@
     self.scrollView.maximumZoomScale = 2.0;
     [self.view addSubview:self.scrollView];
     
-    self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Copy" style:UIBarButtonItemStylePlain target:self action:@selector(copyButtonPressed:)];
+    self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAction target:self action:@selector(actionButtonPressed:)];
 }
 
 - (void)viewDidLayoutSubviews
@@ -78,9 +78,31 @@
     self.scrollView.contentInset = UIEdgeInsetsMake(verticalInset, horizontalInset, verticalInset, horizontalInset);
 }
 
-- (void)copyButtonPressed:(id)sender
+- (void)actionButtonPressed:(id)sender
 {
-    [[UIPasteboard generalPasteboard] setImage:self.image];
+    static BOOL CanSaveToCameraRoll = NO;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        if ([UIDevice currentDevice].systemVersion.floatValue < 10) {
+            CanSaveToCameraRoll = YES;
+            return;
+        }
+        
+        NSBundle *mainBundle = [NSBundle mainBundle];
+        if ([mainBundle.infoDictionary.allKeys containsObject:@"NSPhotoLibraryUsageDescription"]) {
+            CanSaveToCameraRoll = YES;
+        } else {
+            NSLog(@"Add NSPhotoLibraryUsageDescription in app's Info.plist for saving captured image into camera roll.");
+        }
+    });
+    
+    UIActivityViewController *activityVC = [[UIActivityViewController alloc] initWithActivityItems:@[self.image] applicationActivities:@[]];
+    
+    if (!CanSaveToCameraRoll) {
+        activityVC.excludedActivityTypes = @[UIActivityTypeSaveToCameraRoll];
+    }
+    
+    [self presentViewController:activityVC animated:YES completion:nil];
 }
 
 @end

Example/UICatalog.xcodeproj/project.pbxproj

@@ -332,7 +332,7 @@
 		5356823218F3656900BAAD62 /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 0700;
+				LastUpgradeCheck = 1000;
 				ORGANIZATIONNAME = f;
 			};
 			buildConfigurationList = 5356823518F3656900BAAD62 /* Build configuration list for PBXProject "UICatalog" */;
@@ -444,19 +444,32 @@
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
+				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
 				COPY_PHASE_STRIP = NO;
+				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				ENABLE_TESTABILITY = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu99;
 				GCC_DYNAMIC_NO_PIC = NO;
+				GCC_NO_COMMON_BLOCKS = YES;
 				GCC_OPTIMIZATION_LEVEL = 0;
 				GCC_PREPROCESSOR_DEFINITIONS = (
 					"DEBUG=1",
@@ -484,18 +497,31 @@
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
+				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
 				COPY_PHASE_STRIP = YES;
 				ENABLE_NS_ASSERTIONS = NO;
+				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu99;
+				GCC_NO_COMMON_BLOCKS = YES;
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
 				GCC_WARN_UNDECLARED_SELECTOR = YES;

Example/UICatalog.xcodeproj/xcshareddata/xcschemes/UICatalog.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0800"
+   LastUpgradeVersion = "1000"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

Example/UICatalog/AAPLSplitViewControllerDelegate.m

@@ -49,6 +49,9 @@
 
 @implementation AAPLSplitViewControllerDelegate
 
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-implementations"
+
 #pragma mark - UISplitViewControllerDelegate
 
 // Implementing this delegate method allows us to present the detail view controller with the "More" bar button item.
@@ -75,4 +78,6 @@
     [detailRootViewController.navigationItem setLeftBarButtonItem:nil animated:YES];
 }
 
+#pragma clang diagnostic pop
+
 @end

FLEX.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |spec|
   spec.name             = "FLEX"
-  spec.version          = "2.3.0"
+  spec.version          = "2.4.0"
   spec.summary          = "A set of in-app debugging and exploration tools for iOS"
   spec.description      = <<-DESC
                         - Inspect and modify views in the hierarchy.

FLEX.xcodeproj/project.pbxproj

@@ -8,6 +8,8 @@
 
 /* Begin PBXBuildFile section */
 		04F1CA191C137CF1000A52B0 /* LICENSE in Resources */ = {isa = PBXBuildFile; fileRef = 04F1CA181C137CF1000A52B0 /* LICENSE */; };
+		1C27A8B91F0E5A0400F0D02D /* FLEXTestsMethodsList.m in Sources */ = {isa = PBXBuildFile; fileRef = 1C27A8B81F0E5A0400F0D02D /* FLEXTestsMethodsList.m */; };
+		1C27A8BB1F0E5A0400F0D02D /* FLEX.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 3A4C941F1B5B20570088C3F2 /* FLEX.framework */; };
 		222C88221C7339DC007CA15F /* FLEXRealmDefines.h in Headers */ = {isa = PBXBuildFile; fileRef = 222C88211C7339DC007CA15F /* FLEXRealmDefines.h */; };
 		224D49A81C673AB5000EAB86 /* FLEXRealmDatabaseManager.h in Headers */ = {isa = PBXBuildFile; fileRef = 224D49A41C673AB5000EAB86 /* FLEXRealmDatabaseManager.h */; };
 		224D49A91C673AB5000EAB86 /* FLEXRealmDatabaseManager.m in Sources */ = {isa = PBXBuildFile; fileRef = 224D49A51C673AB5000EAB86 /* FLEXRealmDatabaseManager.m */; };
@@ -164,10 +166,31 @@
 		94AAF0381BAF2E1F00DE8760 /* FLEXKeyboardHelpViewController.h in Headers */ = {isa = PBXBuildFile; fileRef = 94AAF0361BAF2E1F00DE8760 /* FLEXKeyboardHelpViewController.h */; settings = {ATTRIBUTES = (Private, ); }; };
 		94AAF0391BAF2E1F00DE8760 /* FLEXKeyboardHelpViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = 94AAF0371BAF2E1F00DE8760 /* FLEXKeyboardHelpViewController.m */; };
 		94AAF03A1BAF2F0300DE8760 /* FLEXKeyboardShortcutManager.h in Headers */ = {isa = PBXBuildFile; fileRef = 942DCD821BAE0AD300DB5DC2 /* FLEXKeyboardShortcutManager.h */; settings = {ATTRIBUTES = (Private, ); }; };
+		C37A0C93218BAC9600848CA7 /* FLEXObjcInternal.h in Headers */ = {isa = PBXBuildFile; fileRef = C37A0C91218BAC9600848CA7 /* FLEXObjcInternal.h */; };
+		C37A0C94218BAC9600848CA7 /* FLEXObjcInternal.mm in Sources */ = {isa = PBXBuildFile; fileRef = C37A0C92218BAC9600848CA7 /* FLEXObjcInternal.mm */; };
+		C395D6D921789BD800BEAD4D /* FLEXColorExplorerViewController.h in Headers */ = {isa = PBXBuildFile; fileRef = C395D6D721789BD800BEAD4D /* FLEXColorExplorerViewController.h */; };
+		C395D6DA21789BD800BEAD4D /* FLEXColorExplorerViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = C395D6D821789BD800BEAD4D /* FLEXColorExplorerViewController.m */; };
+		C3DA55FE21A76406005DDA60 /* FLEXMutableFieldEditorViewController.h in Headers */ = {isa = PBXBuildFile; fileRef = C3DA55FC21A76406005DDA60 /* FLEXMutableFieldEditorViewController.h */; };
+		C3DA55FF21A76406005DDA60 /* FLEXMutableFieldEditorViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = C3DA55FD21A76406005DDA60 /* FLEXMutableFieldEditorViewController.m */; };
+		C3DB9F642107FC9600B46809 /* FLEXObjectRef.h in Headers */ = {isa = PBXBuildFile; fileRef = C3DB9F622107FC9600B46809 /* FLEXObjectRef.h */; };
+		C3DB9F652107FC9600B46809 /* FLEXObjectRef.m in Sources */ = {isa = PBXBuildFile; fileRef = C3DB9F632107FC9600B46809 /* FLEXObjectRef.m */; };
 /* End PBXBuildFile section */
 
+/* Begin PBXContainerItemProxy section */
+		1C27A8BC1F0E5A0400F0D02D /* PBXContainerItemProxy */ = {
+			isa = PBXContainerItemProxy;
+			containerPortal = 3A4C94161B5B20570088C3F2 /* Project object */;
+			proxyType = 1;
+			remoteGlobalIDString = 3A4C941E1B5B20570088C3F2;
+			remoteInfo = FLEX;
+		};
+/* End PBXContainerItemProxy section */
+
 /* Begin PBXFileReference section */
 		04F1CA181C137CF1000A52B0 /* LICENSE */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = LICENSE; sourceTree = "<group>"; };
+		1C27A8B61F0E5A0300F0D02D /* FLEXTestsMethodsList.xctest */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = FLEXTestsMethodsList.xctest; sourceTree = BUILT_PRODUCTS_DIR; };
+		1C27A8B81F0E5A0400F0D02D /* FLEXTestsMethodsList.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = FLEXTestsMethodsList.m; sourceTree = "<group>"; };
+		1C27A8BA1F0E5A0400F0D02D /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
 		222C88211C7339DC007CA15F /* FLEXRealmDefines.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = FLEXRealmDefines.h; sourceTree = "<group>"; };
 		224D49A41C673AB5000EAB86 /* FLEXRealmDatabaseManager.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = FLEXRealmDatabaseManager.h; sourceTree = "<group>"; };
 		224D49A51C673AB5000EAB86 /* FLEXRealmDatabaseManager.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = FLEXRealmDatabaseManager.m; sourceTree = "<group>"; };
@@ -327,9 +350,25 @@
 		94A515241C4CA2080063292F /* FLEXToolbarItem.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = FLEXToolbarItem.m; path = Classes/Toolbar/FLEXToolbarItem.m; sourceTree = SOURCE_ROOT; };
 		94AAF0361BAF2E1F00DE8760 /* FLEXKeyboardHelpViewController.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = FLEXKeyboardHelpViewController.h; sourceTree = "<group>"; };
 		94AAF0371BAF2E1F00DE8760 /* FLEXKeyboardHelpViewController.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = FLEXKeyboardHelpViewController.m; sourceTree = "<group>"; };
+		C37A0C91218BAC9600848CA7 /* FLEXObjcInternal.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = FLEXObjcInternal.h; sourceTree = "<group>"; };
+		C37A0C92218BAC9600848CA7 /* FLEXObjcInternal.mm */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.objcpp; path = FLEXObjcInternal.mm; sourceTree = "<group>"; };
+		C395D6D721789BD800BEAD4D /* FLEXColorExplorerViewController.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = FLEXColorExplorerViewController.h; sourceTree = "<group>"; };
+		C395D6D821789BD800BEAD4D /* FLEXColorExplorerViewController.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = FLEXColorExplorerViewController.m; sourceTree = "<group>"; };
+		C3DA55FC21A76406005DDA60 /* FLEXMutableFieldEditorViewController.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = FLEXMutableFieldEditorViewController.h; sourceTree = "<group>"; };
+		C3DA55FD21A76406005DDA60 /* FLEXMutableFieldEditorViewController.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = FLEXMutableFieldEditorViewController.m; sourceTree = "<group>"; };
+		C3DB9F622107FC9600B46809 /* FLEXObjectRef.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = FLEXObjectRef.h; sourceTree = "<group>"; };
+		C3DB9F632107FC9600B46809 /* FLEXObjectRef.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = FLEXObjectRef.m; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
+		1C27A8B31F0E5A0300F0D02D /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				1C27A8BB1F0E5A0400F0D02D /* FLEX.framework in Frameworks */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		3A4C941B1B5B20570088C3F2 /* Frameworks */ = {
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
@@ -342,10 +381,20 @@
 /* End PBXFrameworksBuildPhase section */
 
 /* Begin PBXGroup section */
+		1C27A8B71F0E5A0400F0D02D /* FLEXTestsMethodsList */ = {
+			isa = PBXGroup;
+			children = (
+				1C27A8B81F0E5A0400F0D02D /* FLEXTestsMethodsList.m */,
+				1C27A8BA1F0E5A0400F0D02D /* Info.plist */,
+			);
+			path = FLEXTestsMethodsList;
+			sourceTree = "<group>";
+		};
 		3A4C94151B5B20570088C3F2 = {
 			isa = PBXGroup;
 			children = (
 				3A4C94211B5B20570088C3F2 /* FLEX */,
+				1C27A8B71F0E5A0400F0D02D /* FLEXTestsMethodsList */,
 				3A4C95451B5B216C0088C3F2 /* Frameworks */,
 				3A4C94201B5B20570088C3F2 /* Products */,
 			);
@@ -355,6 +404,7 @@
 			isa = PBXGroup;
 			children = (
 				3A4C941F1B5B20570088C3F2 /* FLEX.framework */,
+				1C27A8B61F0E5A0300F0D02D /* FLEXTestsMethodsList.xctest */,
 			);
 			name = Products;
 			sourceTree = "<group>";
@@ -414,6 +464,8 @@
 				3A4C94511B5B21410088C3F2 /* FLEXViewControllerExplorerViewController.m */,
 				3A4C94521B5B21410088C3F2 /* FLEXViewExplorerViewController.h */,
 				3A4C94531B5B21410088C3F2 /* FLEXViewExplorerViewController.m */,
+				C395D6D721789BD800BEAD4D /* FLEXColorExplorerViewController.h */,
+				C395D6D821789BD800BEAD4D /* FLEXColorExplorerViewController.m */,
 			);
 			path = ObjectExplorers;
 			sourceTree = "<group>";
@@ -427,6 +479,8 @@
 				3A4C94581B5B21410088C3F2 /* FLEXMultilineTableViewCell.m */,
 				3A4C94591B5B21410088C3F2 /* FLEXResources.h */,
 				3A4C945A1B5B21410088C3F2 /* FLEXResources.m */,
+				C37A0C91218BAC9600848CA7 /* FLEXObjcInternal.h */,
+				C37A0C92218BAC9600848CA7 /* FLEXObjcInternal.mm */,
 				3A4C945B1B5B21410088C3F2 /* FLEXRuntimeUtility.h */,
 				3A4C945C1B5B21410088C3F2 /* FLEXRuntimeUtility.m */,
 				3A4C945D1B5B21410088C3F2 /* FLEXUtility.h */,
@@ -462,6 +516,8 @@
 				3A4C94851B5B21410088C3F2 /* FLEXFieldEditorView.m */,
 				3A4C94861B5B21410088C3F2 /* FLEXFieldEditorViewController.h */,
 				3A4C94871B5B21410088C3F2 /* FLEXFieldEditorViewController.m */,
+				C3DA55FC21A76406005DDA60 /* FLEXMutableFieldEditorViewController.h */,
+				C3DA55FD21A76406005DDA60 /* FLEXMutableFieldEditorViewController.m */,
 				3A4C94881B5B21410088C3F2 /* FLEXIvarEditorViewController.h */,
 				3A4C94891B5B21410088C3F2 /* FLEXIvarEditorViewController.m */,
 				3A4C948A1B5B21410088C3F2 /* FLEXMethodCallingViewController.h */,
@@ -513,8 +569,7 @@
 				94A515231C4CA2080063292F /* FLEXToolbarItem.h */,
 				94A515241C4CA2080063292F /* FLEXToolbarItem.m */,
 			);
-			name = Toolbar;
-			path = ExplorerToolbar;
+			path = Toolbar;
 			sourceTree = "<group>";
 		};
 		3A4C949A1B5B21410088C3F2 /* GlobalStateExplorers */ = {
@@ -533,6 +588,8 @@
 				3A4C94A41B5B21410088C3F2 /* FLEXGlobalsTableViewController.m */,
 				3A4C94A51B5B21410088C3F2 /* FLEXInstancesTableViewController.h */,
 				3A4C94A61B5B21410088C3F2 /* FLEXInstancesTableViewController.m */,
+				C3DB9F622107FC9600B46809 /* FLEXObjectRef.h */,
+				C3DB9F632107FC9600B46809 /* FLEXObjectRef.m */,
 				3A4C94A71B5B21410088C3F2 /* FLEXLibrariesTableViewController.h */,
 				3A4C94A81B5B21410088C3F2 /* FLEXLibrariesTableViewController.m */,
 				3A4C94A91B5B21410088C3F2 /* FLEXLiveObjectsTableViewController.h */,
@@ -656,6 +713,7 @@
 				779B1EDA1C0C4D7C001F5E49 /* FLEXTableListViewController.h in Headers */,
 				3A4C94ED1B5B21410088C3F2 /* FLEXArgumentInputColorView.h in Headers */,
 				3A4C94EB1B5B21410088C3F2 /* FLEXImagePreviewViewController.h in Headers */,
+				C3DA55FE21A76406005DDA60 /* FLEXMutableFieldEditorViewController.h in Headers */,
 				3A4C95381B5B21410088C3F2 /* FLEXNetworkRecorder.h in Headers */,
 				3A4C94251B5B20570088C3F2 /* FLEX.h in Headers */,
 				3A4C95051B5B21410088C3F2 /* FLEXArgumentInputViewFactory.h in Headers */,
@@ -665,6 +723,7 @@
 				3A4C94FD1B5B21410088C3F2 /* FLEXArgumentInputStructView.h in Headers */,
 				94A515141C4CA1C00063292F /* FLEXManager.h in Headers */,
 				3A4C95201B5B21410088C3F2 /* FLEXFileBrowserFileOperationController.h in Headers */,
+				C37A0C93218BAC9600848CA7 /* FLEXObjcInternal.h in Headers */,
 				3A4C953E1B5B21410088C3F2 /* FLEXNetworkTransactionDetailTableViewController.h in Headers */,
 				3A4C95301B5B21410088C3F2 /* FLEXSystemLogMessage.h in Headers */,
 				3A4C95361B5B21410088C3F2 /* FLEXNetworkHistoryTableViewController.h in Headers */,
@@ -725,10 +784,12 @@
 				3A4C94FB1B5B21410088C3F2 /* FLEXArgumentInputStringView.h in Headers */,
 				3A4C95421B5B21410088C3F2 /* FLEXNetworkObserver.h in Headers */,
 				679F64861BD53B7B00A8C94C /* FLEXCookiesTableViewController.h in Headers */,
+				C3DB9F642107FC9600B46809 /* FLEXObjectRef.h in Headers */,
 				3A4C95401B5B21410088C3F2 /* FLEXNetworkTransactionTableViewCell.h in Headers */,
 				3A4C95241B5B21410088C3F2 /* FLEXFileBrowserTableViewController.h in Headers */,
 				94AAF0381BAF2E1F00DE8760 /* FLEXKeyboardHelpViewController.h in Headers */,
 				94AAF03A1BAF2F0300DE8760 /* FLEXKeyboardShortcutManager.h in Headers */,
+				C395D6D921789BD800BEAD4D /* FLEXColorExplorerViewController.h in Headers */,
 				94A515181C4CA1D70063292F /* FLEXManager+Private.h in Headers */,
 				3A4C94E11B5B21410088C3F2 /* FLEXResources.h in Headers */,
 				779B1ED81C0C4D7C001F5E49 /* FLEXTableLeftCell.h in Headers */,
@@ -738,6 +799,24 @@
 /* End PBXHeadersBuildPhase section */
 
 /* Begin PBXNativeTarget section */
+		1C27A8B51F0E5A0300F0D02D /* FLEXTestsMethodsList */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = 1C27A8C01F0E5A0400F0D02D /* Build configuration list for PBXNativeTarget "FLEXTestsMethodsList" */;
+			buildPhases = (
+				1C27A8B21F0E5A0300F0D02D /* Sources */,
+				1C27A8B31F0E5A0300F0D02D /* Frameworks */,
+				1C27A8B41F0E5A0300F0D02D /* Resources */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+				1C27A8BD1F0E5A0400F0D02D /* PBXTargetDependency */,
+			);
+			name = FLEXTestsMethodsList;
+			productName = FLEXTestsMethodsList;
+			productReference = 1C27A8B61F0E5A0300F0D02D /* FLEXTestsMethodsList.xctest */;
+			productType = "com.apple.product-type.bundle.unit-test";
+		};
 		3A4C941E1B5B20570088C3F2 /* FLEX */ = {
 			isa = PBXNativeTarget;
 			buildConfigurationList = 3A4C94351B5B20570088C3F2 /* Build configuration list for PBXNativeTarget "FLEX" */;
@@ -763,9 +842,12 @@
 			isa = PBXProject;
 			attributes = {
 				CLASSPREFIX = FLEX;
-				LastUpgradeCheck = 0800;
+				LastUpgradeCheck = 0930;
 				ORGANIZATIONNAME = Flipboard;
 				TargetAttributes = {
+					1C27A8B51F0E5A0300F0D02D = {
+						DevelopmentTeam = U3LST7M92S;
+					};
 					3A4C941E1B5B20570088C3F2 = {
 						CreatedOnToolsVersion = 6.4;
 					};
@@ -784,11 +866,19 @@
 			projectRoot = "";
 			targets = (
 				3A4C941E1B5B20570088C3F2 /* FLEX */,
+				1C27A8B51F0E5A0300F0D02D /* FLEXTestsMethodsList */,
 			);
 		};
 /* End PBXProject section */
 
 /* Begin PBXResourcesBuildPhase section */
+		1C27A8B41F0E5A0300F0D02D /* Resources */ = {
+			isa = PBXResourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		3A4C941D1B5B20570088C3F2 /* Resources */ = {
 			isa = PBXResourcesBuildPhase;
 			buildActionMask = 2147483647;
@@ -800,6 +890,14 @@
 /* End PBXResourcesBuildPhase section */
 
 /* Begin PBXSourcesBuildPhase section */
+		1C27A8B21F0E5A0300F0D02D /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				1C27A8B91F0E5A0400F0D02D /* FLEXTestsMethodsList.m in Sources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 		3A4C941A1B5B20570088C3F2 /* Sources */ = {
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
@@ -818,6 +916,7 @@
 				94AAF0391BAF2E1F00DE8760 /* FLEXKeyboardHelpViewController.m in Sources */,
 				3A4C951F1B5B21410088C3F2 /* FLEXClassesTableViewController.m in Sources */,
 				3A4C94C61B5B21410088C3F2 /* FLEXArrayExplorerViewController.m in Sources */,
+				C3DA55FF21A76406005DDA60 /* FLEXMutableFieldEditorViewController.m in Sources */,
 				3A4C95081B5B21410088C3F2 /* FLEXDefaultEditorViewController.m in Sources */,
 				779B1ED11C0C4D7C001F5E49 /* FLEXMultiColumnTableView.m in Sources */,
 				3A4C94EE1B5B21410088C3F2 /* FLEXArgumentInputColorView.m in Sources */,
@@ -855,12 +954,15 @@
 				3A4C95351B5B21410088C3F2 /* FLEXSystemLogTableViewController.m in Sources */,
 				3A4C95271B5B21410088C3F2 /* FLEXGlobalsTableViewController.m in Sources */,
 				779B1ED31C0C4D7C001F5E49 /* FLEXTableColumnHeader.m in Sources */,
+				C37A0C94218BAC9600848CA7 /* FLEXObjcInternal.mm in Sources */,
 				3A4C94EA1B5B21410088C3F2 /* FLEXHierarchyTableViewController.m in Sources */,
 				3A4C95331B5B21410088C3F2 /* FLEXSystemLogTableViewCell.m in Sources */,
+				C3DB9F652107FC9600B46809 /* FLEXObjectRef.m in Sources */,
 				3A4C95021B5B21410088C3F2 /* FLEXArgumentInputTextView.m in Sources */,
 				94A515261C4CA2080063292F /* FLEXExplorerToolbar.m in Sources */,
 				3A4C94FA1B5B21410088C3F2 /* FLEXArgumentInputNumberView.m in Sources */,
 				779B1ED71C0C4D7C001F5E49 /* FLEXTableContentViewController.m in Sources */,
+				C395D6DA21789BD800BEAD4D /* FLEXColorExplorerViewController.m in Sources */,
 				3A4C95001B5B21410088C3F2 /* FLEXArgumentInputSwitchView.m in Sources */,
 				3A4C94CC1B5B21410088C3F2 /* FLEXDictionaryExplorerViewController.m in Sources */,
 				3A4C953F1B5B21410088C3F2 /* FLEXNetworkTransactionDetailTableViewController.m in Sources */,
@@ -884,7 +986,46 @@
 		};
 /* End PBXSourcesBuildPhase section */
 
+/* Begin PBXTargetDependency section */
+		1C27A8BD1F0E5A0400F0D02D /* PBXTargetDependency */ = {
+			isa = PBXTargetDependency;
+			target = 3A4C941E1B5B20570088C3F2 /* FLEX */;
+			targetProxy = 1C27A8BC1F0E5A0400F0D02D /* PBXContainerItemProxy */;
+		};
+/* End PBXTargetDependency section */
+
 /* Begin XCBuildConfiguration section */
+		1C27A8BE1F0E5A0400F0D02D /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CLANG_ANALYZER_NONNULL = YES;
+				CLANG_ANALYZER_NUMBER_OBJECT_CONVERSION = YES_AGGRESSIVE;
+				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
+				DEBUG_INFORMATION_FORMAT = dwarf;
+				DEVELOPMENT_TEAM = U3LST7M92S;
+				INFOPLIST_FILE = FLEXTestsMethodsList/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 10.3;
+				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
+				PRODUCT_BUNDLE_IDENTIFIER = com.flipboard.FLEXTestsMethodsList;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+			};
+			name = Debug;
+		};
+		1C27A8BF1F0E5A0400F0D02D /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CLANG_ANALYZER_NONNULL = YES;
+				CLANG_ANALYZER_NUMBER_OBJECT_CONVERSION = YES_AGGRESSIVE;
+				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
+				DEVELOPMENT_TEAM = U3LST7M92S;
+				INFOPLIST_FILE = FLEXTestsMethodsList/Info.plist;
+				IPHONEOS_DEPLOYMENT_TARGET = 10.3;
+				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
+				PRODUCT_BUNDLE_IDENTIFIER = com.flipboard.FLEXTestsMethodsList;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+			};
+			name = Release;
+		};
 		3A4C94331B5B20570088C3F2 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
@@ -893,14 +1034,22 @@
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
@@ -944,14 +1093,22 @@
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
@@ -1025,6 +1182,15 @@
 /* End XCBuildConfiguration section */
 
 /* Begin XCConfigurationList section */
+		1C27A8C01F0E5A0400F0D02D /* Build configuration list for PBXNativeTarget "FLEXTestsMethodsList" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				1C27A8BE1F0E5A0400F0D02D /* Debug */,
+				1C27A8BF1F0E5A0400F0D02D /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
 		3A4C94191B5B20570088C3F2 /* Build configuration list for PBXProject "FLEX" */ = {
 			isa = XCConfigurationList;
 			buildConfigurations = (

FLEX.xcodeproj/xcshareddata/xcschemes/FLEX.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0800"
+   LastUpgradeVersion = "1000"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

FLEX.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?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>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

FLEXTestsMethodsList/FLEXTestsMethodsList.m

@@ -0,0 +1,101 @@
+//
+//  FLEXTestMethodList.m
+//  FLEXTestMethodList
+//
+//  Created by Tigran Yesayan on 7/6/17.
+//  Copyright © 2017 Flipboard. All rights reserved.
+//
+
+#import <XCTest/XCTest.h>
+#import "FLEXRuntimeUtility.h"
+#import "FLEXManager.h"
+#import "FLEXWindow.h"
+#import "FLEXMultiColumnTableView.h"
+
+@interface FLEXRuntimeUtility (Testing)
+
++ (NSString *)readableTypeForEncoding:(NSString *)encodingString;
+
+@end
+
+@interface FLEXTestMethodList : XCTestCase
+
+@end
+
+@implementation FLEXTestMethodList
+
+- (void)testExample {
+    NSArray<Class> *classesToTest = @[
+        [NSObject class],
+        [NSArray class],
+        [UIApplication class],
+        [UIView class],
+        [NSThread class],
+        [CALayer class],
+        [NSDictionary class],
+        [NSProxy class],
+        [NSData class],
+        [FLEXManager class],
+        [FLEXWindow class],
+        [FLEXMultiColumnTableView class],
+        [NSString class],
+        [NSSet class],
+        [NSUndoManager class],
+        [NSMutableArray class],
+        [NSMutableDictionary class],
+        [NSException class],
+        [UIImage class],
+        [UIViewController class],
+        [UIScreen class],
+        [UIResponder class],
+        [NSNumber class],
+        [NSValue class],
+        [NSError class],
+        [NSNotificationCenter class],
+        [NSUserActivity class],
+        [NSUserDefaults class],
+        [NSExpression class],
+        [NSBundle class]
+    ];
+    
+    for (Class cls in classesToTest) {
+        [self testMethodListForClass:cls];
+    }
+}
+
+- (void)testMethodListForClass:(Class)class {
+    NSLog(@"class: %@", NSStringFromClass(class));
+    unsigned int methodCount = 0;
+    Method *methods = class_copyMethodList(class, &methodCount);
+    for (unsigned int i = 0; i < methodCount; ++i) {
+        Method method = methods[i];
+        NSArray *prevWay = [self prettyArgumentComponentsForMethod:method];
+        NSArray *newWay = [FLEXRuntimeUtility prettyArgumentComponentsForMethod:method];
+        
+        XCTAssertEqualObjects(prevWay, newWay);
+    }
+    
+    free(methods);
+}
+
+#pragma mark - Method to test with
+
+- (NSArray *)prettyArgumentComponentsForMethod:(Method)method {
+    NSMutableArray *components = [NSMutableArray array];
+    
+    NSString *selectorName = NSStringFromSelector(method_getName(method));
+    NSArray *selectorComponents = [selectorName componentsSeparatedByString:@":"];
+    unsigned int numberOfArguments = method_getNumberOfArguments(method);
+    
+    for (unsigned int argIndex = kFLEXNumberOfImplicitArgs; argIndex < numberOfArguments; argIndex++) {
+        char *argType = method_copyArgumentType(method, argIndex);
+        NSString *readableArgType = [FLEXRuntimeUtility readableTypeForEncoding:@(argType)];
+        free(argType);
+        NSString *prettyComponent = [NSString stringWithFormat:@"%@:(%@) ", [selectorComponents objectAtIndex:argIndex - kFLEXNumberOfImplicitArgs], readableArgType];
+        [components addObject:prettyComponent];
+    }
+    
+    return components;
+}
+
+@end

FLEXTestsMethodsList/Info.plist

@@ -0,0 +1,22 @@
+<?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>BNDL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+</dict>
+</plist>

README.md

@@ -37,9 +37,15 @@ In the iOS simulator, you can use keyboard shortcuts to activate FLEX. `f` will
 Short version:
 
 ```objc
+// Objective-C
 [[FLEXManager sharedManager] showExplorer];
 ```
 
+```swift
+// Swift
+FLEXManager.shared().showExplorer()
+```
+
 More complete version:
 
 ```objc
@@ -114,18 +120,61 @@ The code injection is left as an exercise for the reader. :innocent:
 
 
 ## Installation
-FLEX is available on [CocoaPods](http://cocoapods.org/?q=FLEX). Simply add the following line to your podfile:
+
+FLEX requires an app that targets iOS 7 or higher.
+
+### CocoaPods
+
+FLEX is available on [CocoaPods](https://cocoapods.org/pods/FLEX). Simply add the following line to your podfile:
 
 ```ruby
 pod 'FLEX', '~> 2.0', :configurations => ['Debug']
 ```
 
-Alternatively, you can manually add the files in `Classes/` to your Xcode project. FLEX requires iOS 7 or higher.
+### Carthage
+
+Add the following to your Cartfile:
+
+```
+github "flipboard/FLEX" ~> 2.0
+```
+
+### Manual
+
+Manually add the files in `Classes/` to your Xcode project.
 
 
 ## Excluding FLEX from Release (App Store) Builds
-*Note: CocoaPods handles this automatically if you only specify the Debug configuration for FLEX in your Podfile.*
-FLEX makes it easy to explore the internals of your app, so it is not something you should expose to your users. Fortunately, it is easy to exclude FLEX files from Release builds. In Xcode, navigate to the "Build Settings" tab of your project. Click the plus and select `Add User-Defined Setting`.
+
+FLEX makes it easy to explore the internals of your app, so it is not something you should expose to your users. Fortunately, it is easy to exclude FLEX files from Release builds. The strategies differ depending on how you integrated FLEX in your project, and are described below.
+
+At the places in your code where you integrate FLEX, do a `#if DEBUG` check to ensure the tool is only accessible in your `Debug` builds and to avoid errors in your `Release` builds. For more help with integrating FLEX, see the example project.
+
+### FLEX added with CocoaPods
+
+CocoaPods automatically excludes FLEX from release builds if you only specify the Debug configuration for FLEX in your Podfile.
+
+### FLEX added with Carthage
+
+If you are using Carthage, only including the `FLEX.framework` in debug builds is easy:
+
+1. Do NOT add `FLEX.framework` to the embedded binaries of your target, as it would otherwise be included in all builds (therefore also in release ones).
+1. Instead, add `$(PROJECT_DIR)/Carthage/Build/iOS` to your target _Framework Search Paths_ (this setting might already be present if you already included other frameworks with Carthage). This makes it possible to import the FLEX framework from your source files. It does not harm if this setting is added for all configurations, but it should at least be added for the debug one. 
+1. Add a _Run Script Phase_ to your target (inserting it after the existing `Link Binary with Libraries` phase, for example), and which will embed `FLEX.framework` in debug builds only:
+
+	```shell
+	if [ "$CONFIGURATION" == "Debug" ]; then
+	  /usr/local/bin/carthage copy-frameworks
+	fi
+	```
+	
+	Finally, add `$(SRCROOT)/Carthage/Build/iOS/FLEX.framework` as input file of this script phase.
+	
+<p align="center"><img src="README-images/flex-exclusion-carthage.jpg"/></p>
+
+### FLEX files added manually to a project
+
+In Xcode, navigate to the "Build Settings" tab of your project. Click the plus and select `Add User-Defined Setting`.
 
 ![Add User-Defined Setting](http://engineering.flipboard.com/assets/flex/flex-readme-exclude-1.png)
 
@@ -133,10 +182,8 @@ Name the setting `EXCLUDED_SOURCE_FILE_NAMES`. For your `Release` configuration,
 
 ![EXCLUDED_SOURCE_FILE_NAMES](http://engineering.flipboard.com/assets/flex/flex-readme-exclude-2.png)
 
-At the places in your code where you integrate FLEX, do a `#if DEBUG` check to ensure the tool is only accessible in your `Debug` builds and to avoid errors in your `Release` builds. For more help with integrating FLEX, see the example project.
-
-
 ## Additional Notes
+
 - When setting fields of type `id` or values in `NSUserDefaults`, FLEX attempts to parse the input string as `JSON`. This allows you to use a combination of strings, numbers, arrays, and dictionaries. If you want to set a string value, it must be wrapped in quotes. For ivars or properties that are explicitly typed as `NSStrings`, quotes are not required.
 - You may want to disable the exception breakpoint while using FLEX. Certain functions that FLEX uses throw exceptions when they get input they can't handle (i.e. `NSGetSizeAndAlignment()`). FLEX catches these to avoid crashing, but your breakpoint will get hit if it is active.