Guard usage of class only available in simulator builds

Having two switches to enable network debugging was confusing. One switch now enables network debugging and persists across launches of the app.

.travis.yml

@@ -0,0 +1,8 @@
+language: objective-c
+xcode_workspace: FLEX.xcworkspace
+matrix:
+    include:
+        - xcode_scheme: UICatalog
+          xcode_sdk: iphonesimulator
+        - xcode_scheme: FLEX
+          xcode_sdk: iphonesimulator

Classes/Explorer Toolbar/FLEXManager.m

@@ -1,159 +0,0 @@
-//
-//  FLEXManager.m
-//  Flipboard
-//
-//  Created by Ryan Olson on 4/4/14.
-//  Copyright (c) 2014 Flipboard. All rights reserved.
-//
-
-#import "FLEXManager.h"
-#import "FLEXExplorerViewController.h"
-#import "FLEXWindow.h"
-#import "FLEXGlobalsTableViewControllerEntry.h"
-#import "FLEXObjectExplorerFactory.h"
-#import "FLEXObjectExplorerViewController.h"
-#import "FLEXNetworkObserver.h"
-#import "FLEXNetworkRecorder.h"
-
-@interface FLEXManager () <FLEXWindowEventDelegate, FLEXExplorerViewControllerDelegate>
-
-@property (nonatomic, strong) FLEXWindow *explorerWindow;
-@property (nonatomic, strong) FLEXExplorerViewController *explorerViewController;
-
-@property (nonatomic, readonly, strong) NSMutableArray *userGlobalEntries;
-
-@end
-
-@implementation FLEXManager
-
-+ (instancetype)sharedManager
-{
-    static FLEXManager *sharedManager = nil;
-    static dispatch_once_t onceToken;
-    dispatch_once(&onceToken, ^{
-        sharedManager = [[[self class] alloc] init];
-    });
-    return sharedManager;
-}
-
-- (instancetype)init
-{
-    self = [super init];
-    if (self) {
-        _userGlobalEntries = [[NSMutableArray alloc] init];
-    }
-    return self;
-}
-
-- (FLEXWindow *)explorerWindow
-{
-    NSAssert([NSThread isMainThread], @"You must use %@ from the main thread only.", NSStringFromClass([self class]));
-    
-    if (!_explorerWindow) {
-        _explorerWindow = [[FLEXWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
-        _explorerWindow.eventDelegate = self;
-        _explorerWindow.rootViewController = self.explorerViewController;
-    }
-    
-    return _explorerWindow;
-}
-
-- (FLEXExplorerViewController *)explorerViewController
-{
-    if (!_explorerViewController) {
-        _explorerViewController = [[FLEXExplorerViewController alloc] init];
-        _explorerViewController.delegate = self;
-    }
-
-    return _explorerViewController;
-}
-
-- (void)showExplorer
-{
-    self.explorerWindow.hidden = NO;
-}
-
-- (void)hideExplorer
-{
-    self.explorerWindow.hidden = YES;
-}
-
-- (BOOL)isHidden
-{
-    return self.explorerWindow.isHidden;
-}
-
-- (BOOL)isNetworkDebuggingEnabled
-{
-    return [FLEXNetworkObserver isEnabled];
-}
-
-- (void)setNetworkDebuggingEnabled:(BOOL)networkDebuggingEnabled
-{
-    [FLEXNetworkObserver setEnabled:networkDebuggingEnabled];
-}
-
-- (NSUInteger)networkResponseCacheByteLimit
-{
-    return [[FLEXNetworkRecorder defaultRecorder] responseCacheByteLimit];
-}
-
-- (void)setNetworkResponseCacheByteLimit:(NSUInteger)networkResponseCacheByteLimit
-{
-    [[FLEXNetworkRecorder defaultRecorder] setResponseCacheByteLimit:networkResponseCacheByteLimit];
-}
-
-#pragma mark - FLEXWindowEventDelegate
-
-- (BOOL)shouldHandleTouchAtPoint:(CGPoint)pointInWindow
-{
-    // Ask the explorer view controller
-    return [self.explorerViewController shouldReceiveTouchAtWindowPoint:pointInWindow];
-}
-
-
-#pragma mark - FLEXExplorerViewControllerDelegate
-
-- (void)explorerViewControllerDidFinish:(FLEXExplorerViewController *)explorerViewController
-{
-    [self hideExplorer];
-}
-
-
-#pragma mark - Extensions
-
-- (void)registerGlobalEntryWithName:(NSString *)entryName objectFutureBlock:(id (^)(void))objectFutureBlock
-{
-    NSParameterAssert(entryName);
-    NSParameterAssert(objectFutureBlock);
-    NSAssert([NSThread isMainThread], @"This method must be called from the main thread.");
-
-    entryName = entryName.copy;
-    FLEXGlobalsTableViewControllerEntry *entry = [FLEXGlobalsTableViewControllerEntry entryWithNameFuture:^NSString *{
-        return entryName;
-    } viewControllerFuture:^UIViewController *{
-        return [FLEXObjectExplorerFactory explorerViewControllerForObject:objectFutureBlock()];
-    }];
-
-    [self.userGlobalEntries addObject:entry];
-}
-
-- (void)registerGlobalEntryWithName:(NSString *)entryName viewControllerFutureBlock:(UIViewController * (^)(void))viewControllerFutureBlock
-{
-    NSParameterAssert(entryName);
-    NSParameterAssert(viewControllerFutureBlock);
-    NSAssert([NSThread isMainThread], @"This method must be called from the main thread.");
-
-    entryName = entryName.copy;
-    FLEXGlobalsTableViewControllerEntry *entry = [FLEXGlobalsTableViewControllerEntry entryWithNameFuture:^NSString *{
-        return entryName;
-    } viewControllerFuture:^UIViewController *{
-        UIViewController *viewController = viewControllerFutureBlock();
-        NSCAssert(viewController, @"'%@' entry returned nil viewController. viewControllerFutureBlock should never return nil.", entryName);
-        return viewController;
-    }];
-
-    [self.userGlobalEntries addObject:entry];
-}
-
-@end

Classes/Explorer Toolbar/FLEXWindow.m

@@ -1,36 +0,0 @@
-//
-//  FLEXWindow.m
-//  Flipboard
-//
-//  Created by Ryan Olson on 4/13/14.
-//  Copyright (c) 2014 Flipboard. All rights reserved.
-//
-
-#import "FLEXWindow.h"
-
-@implementation FLEXWindow
-
-- (id)initWithFrame:(CGRect)frame
-{
-    self = [super initWithFrame:frame];
-    if (self) {
-        self.backgroundColor = [UIColor clearColor];
-        // Some apps have windows at UIWindowLevelStatusBar + n.
-        // If we make the window level too high, we block out UIAlertViews.
-        // There's a balance between staying above the app's windows and staying below alerts.
-        // UIWindowLevelStatusBar + 100 seems to hit that balance.
-        self.windowLevel = UIWindowLevelStatusBar + 100.0;
-    }
-    return self;
-}
-
-- (BOOL)pointInside:(CGPoint)point withEvent:(UIEvent *)event
-{
-    BOOL pointInside = NO;
-    if ([self.eventDelegate shouldHandleTouchAtPoint:point]) {
-        pointInside = [super pointInside:point withEvent:event];
-    }
-    return pointInside;
-}
-
-@end

Classes/ExplorerToolbar/FLEXExplorerViewController.h

@@ -15,6 +15,18 @@
 @property (nonatomic, weak) id <FLEXExplorerViewControllerDelegate> delegate;
 
 - (BOOL)shouldReceiveTouchAtWindowPoint:(CGPoint)pointInWindowCoordinates;
+- (BOOL)wantsWindowToBecomeKey;
+
+// Keyboard shortcut helpers
+
+- (void)toggleSelectTool;
+- (void)toggleMoveTool;
+- (void)toggleViewsTool;
+- (void)toggleMenuTool;
+- (void)handleDownArrowKeyPressed;
+- (void)handleUpArrowKeyPressed;
+- (void)handleRightArrowKeyPressed;
+- (void)handleLeftArrowKeyPressed;
 
 @end
 

Classes/ExplorerToolbar/FLEXExplorerViewController.m

@@ -14,6 +14,7 @@
 #import "FLEXGlobalsTableViewController.h"
 #import "FLEXObjectExplorerViewController.h"
 #import "FLEXObjectExplorerFactory.h"
+#import "FLEXNetworkHistoryTableViewController.h"
 
 typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
     FLEXExplorerModeDefault,
@@ -120,77 +121,27 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
 }
 
 
-#pragma mark - Status Bar Wrangling for iOS 7
-
-// Try to get the preferred status bar properties from the app's root view controller (not us).
-// In general, our window shouldn't be the key window when this view controller is asked about the status bar.
-// However, we guard against infinite recursion and provide a reasonable default for status bar behavior in case our window is the keyWindow.
-
-- (UIViewController *)viewControllerForStatusBarAndOrientationProperties
-{
-    UIViewController *viewControllerToAsk = [[[UIApplication sharedApplication] keyWindow] rootViewController];
-    
-    // On iPhone, modal view controllers get asked
-    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
-        while (viewControllerToAsk.presentedViewController) {
-            viewControllerToAsk = viewControllerToAsk.presentedViewController;
-        }
-    }
-    
-    return viewControllerToAsk;
-}
-
-- (UIStatusBarStyle)preferredStatusBarStyle
-{
-    UIViewController *viewControllerToAsk = [self viewControllerForStatusBarAndOrientationProperties];
-    UIStatusBarStyle preferredStyle = UIStatusBarStyleDefault;
-    if (viewControllerToAsk && viewControllerToAsk != self) {
-        // We might need to foward to a child
-        UIViewController *childViewControllerToAsk = [viewControllerToAsk childViewControllerForStatusBarStyle];
-        while (childViewControllerToAsk && childViewControllerToAsk != viewControllerToAsk) {
-            viewControllerToAsk = childViewControllerToAsk;
-            childViewControllerToAsk = [viewControllerToAsk childViewControllerForStatusBarStyle];
-        }
-        
-        preferredStyle = [viewControllerToAsk preferredStatusBarStyle];
-    }
-    return preferredStyle;
-}
-
-- (UIStatusBarAnimation)preferredStatusBarUpdateAnimation
-{
-    UIViewController *viewControllerToAsk = [self viewControllerForStatusBarAndOrientationProperties];
-    UIStatusBarAnimation preferredAnimation = UIStatusBarAnimationFade;
-    if (viewControllerToAsk && viewControllerToAsk != self) {
-        preferredAnimation = [viewControllerToAsk preferredStatusBarUpdateAnimation];
-    }
-    return preferredAnimation;
-}
-
-- (BOOL)prefersStatusBarHidden
-{
-    UIViewController *viewControllerToAsk = [self viewControllerForStatusBarAndOrientationProperties];
-    BOOL prefersHidden = NO;
-    if (viewControllerToAsk && viewControllerToAsk != self) {
-        // Again, we might need to forward to a child
-        UIViewController *childViewControllerToAsk = [viewControllerToAsk childViewControllerForStatusBarHidden];
-        while (childViewControllerToAsk && childViewControllerToAsk != viewControllerToAsk) {
-            viewControllerToAsk = childViewControllerToAsk;
-            childViewControllerToAsk = [viewControllerToAsk childViewControllerForStatusBarHidden];
-        }
-        
-        prefersHidden = [viewControllerToAsk prefersStatusBarHidden];
-    }
-    return prefersHidden;
-}
-
-
 #pragma mark - Rotation
 
-- (NSUInteger)supportedInterfaceOrientations
+- (UIViewController *)viewControllerForRotationAndOrientation
 {
-    UIViewController *viewControllerToAsk = [self viewControllerForStatusBarAndOrientationProperties];
-    NSUInteger supportedOrientations = [FLEXUtility infoPlistSupportedInterfaceOrientationsMask];
+    UIWindow *window = self.previousKeyWindow ?: [[UIApplication sharedApplication] keyWindow];
+    UIViewController *viewController = window.rootViewController;
+    NSString *viewControllerSelectorString = [@[@"_vie", @"wContro", @"llerFor", @"Supported", @"Interface", @"Orientations"] componentsJoinedByString:@""];
+    SEL viewControllerSelector = NSSelectorFromString(viewControllerSelectorString);
+    if ([viewController respondsToSelector:viewControllerSelector]) {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
+        viewController = [viewController performSelector:viewControllerSelector];
+#pragma clang diagnostic pop
+    }
+    return viewController;
+}
+
+- (UIInterfaceOrientationMask)supportedInterfaceOrientations
+{
+    UIViewController *viewControllerToAsk = [self viewControllerForRotationAndOrientation];
+    UIInterfaceOrientationMask supportedOrientations = [FLEXUtility infoPlistSupportedInterfaceOrientationsMask];
     if (viewControllerToAsk && viewControllerToAsk != self) {
         supportedOrientations = [viewControllerToAsk supportedInterfaceOrientations];
     }
@@ -206,7 +157,7 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
 
 - (BOOL)shouldAutorotate
 {
-    UIViewController *viewControllerToAsk = [self viewControllerForStatusBarAndOrientationProperties];
+    UIViewController *viewControllerToAsk = [self viewControllerForRotationAndOrientation];
     BOOL shouldAutorotate = YES;
     if (viewControllerToAsk && viewControllerToAsk != self) {
         shouldAutorotate = [viewControllerToAsk shouldAutorotate];
@@ -417,21 +368,12 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
 
 - (void)selectButtonTapped:(FLEXToolbarItem *)sender
 {
-    if (self.currentMode == FLEXExplorerModeSelect) {
-        self.currentMode = FLEXExplorerModeDefault;
-    } else {
-        self.currentMode = FLEXExplorerModeSelect;
-    }
+    [self toggleSelectTool];
 }
 
 - (void)hierarchyButtonTapped:(FLEXToolbarItem *)sender
 {
-    NSArray *allViews = [self allViewsInHierarchy];
-    NSDictionary *depthsForViews = [self hierarchyDepthsForViews:allViews];
-    FLEXHierarchyTableViewController *hierarchyTVC = [[FLEXHierarchyTableViewController alloc] initWithViews:allViews viewsAtTap:self.viewsAtTapPoint selectedView:self.selectedView depths:depthsForViews];
-    hierarchyTVC.delegate = self;
-    UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:hierarchyTVC];
-    [self makeKeyAndPresentViewController:navigationController animated:YES completion:nil];
+    [self toggleViewsTool];
 }
 
 - (NSArray *)allViewsInHierarchy
@@ -477,20 +419,12 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
 
 - (void)moveButtonTapped:(FLEXToolbarItem *)sender
 {
-    if (self.currentMode == FLEXExplorerModeMove) {
-        self.currentMode = FLEXExplorerModeDefault;
-    } else {
-        self.currentMode = FLEXExplorerModeMove;
-    }
+    [self toggleMoveTool];
 }
 
 - (void)globalsButtonTapped:(FLEXToolbarItem *)sender
 {
-    FLEXGlobalsTableViewController *globalsViewController = [[FLEXGlobalsTableViewController alloc] init];
-    globalsViewController.delegate = self;
-    [FLEXGlobalsTableViewController setApplicationWindow:[[UIApplication sharedApplication] keyWindow]];
-    UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:globalsViewController];
-    [self makeKeyAndPresentViewController:navigationController animated:YES completion:nil];
+    [self toggleMenuTool];
 }
 
 - (void)closeButtonTapped:(FLEXToolbarItem *)sender
@@ -860,9 +794,10 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
 
 - (void)resignKeyAndDismissViewControllerAnimated:(BOOL)animated completion:(void (^)(void))completion
 {
-    [self.previousKeyWindow makeKeyWindow];
-    
+    UIWindow *previousKeyWindow = self.previousKeyWindow;
     self.previousKeyWindow = nil;
+    [previousKeyWindow makeKeyWindow];
+    [[previousKeyWindow rootViewController] setNeedsStatusBarAppearanceUpdate];
     
     // Restore the status bar window's normal window level.
     // We want it above FLEX while a modal is presented for scroll to top, but below FLEX otherwise for exploration.
@@ -874,4 +809,108 @@ typedef NS_ENUM(NSUInteger, FLEXExplorerMode) {
     [self dismissViewControllerAnimated:animated completion:completion];
 }
 
+- (BOOL)wantsWindowToBecomeKey
+{
+    return self.previousKeyWindow != nil;
+}
+
+#pragma mark - Keyboard Shortcut Helpers
+
+- (void)toggleSelectTool
+{
+    if (self.currentMode == FLEXExplorerModeSelect) {
+        self.currentMode = FLEXExplorerModeDefault;
+    } else {
+        self.currentMode = FLEXExplorerModeSelect;
+    }
+}
+
+- (void)toggleMoveTool
+{
+    if (self.currentMode == FLEXExplorerModeMove) {
+        self.currentMode = FLEXExplorerModeDefault;
+    } else {
+        self.currentMode = FLEXExplorerModeMove;
+    }
+}
+
+- (void)toggleViewsTool
+{
+    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 {
+        [self resignKeyAndDismissViewControllerAnimated:NO completion:nil];
+        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];
+    }
+}
+
+- (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 {
+        [self resignKeyAndDismissViewControllerAnimated:NO completion:nil];
+        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];
+    }
+}
+
+- (void)handleDownArrowKeyPressed
+{
+    if (self.currentMode == FLEXExplorerModeMove) {
+        CGRect frame = self.selectedView.frame;
+        frame.origin.y += 1.0 / [[UIScreen mainScreen] scale];
+        self.selectedView.frame = frame;
+    } else if (self.currentMode == FLEXExplorerModeSelect && [self.viewsAtTapPoint count] > 0) {
+        NSInteger selectedViewIndex = [self.viewsAtTapPoint indexOfObject:self.selectedView];
+        if (selectedViewIndex > 0) {
+            self.selectedView = [self.viewsAtTapPoint objectAtIndex:selectedViewIndex - 1];
+        }
+    }
+}
+
+- (void)handleUpArrowKeyPressed
+{
+    if (self.currentMode == FLEXExplorerModeMove) {
+        CGRect frame = self.selectedView.frame;
+        frame.origin.y -= 1.0 / [[UIScreen mainScreen] scale];
+        self.selectedView.frame = frame;
+    } else if (self.currentMode == FLEXExplorerModeSelect && [self.viewsAtTapPoint count] > 0) {
+        NSInteger selectedViewIndex = [self.viewsAtTapPoint indexOfObject:self.selectedView];
+        if (selectedViewIndex < [self.viewsAtTapPoint count] - 1) {
+            self.selectedView = [self.viewsAtTapPoint objectAtIndex:selectedViewIndex + 1];
+        }
+    }
+}
+
+- (void)handleRightArrowKeyPressed
+{
+    if (self.currentMode == FLEXExplorerModeMove) {
+        CGRect frame = self.selectedView.frame;
+        frame.origin.x += 1.0 / [[UIScreen mainScreen] scale];
+        self.selectedView.frame = frame;
+    }
+}
+
+- (void)handleLeftArrowKeyPressed
+{
+    if (self.currentMode == FLEXExplorerModeMove) {
+        CGRect frame = self.selectedView.frame;
+        frame.origin.x -= 1.0 / [[UIScreen mainScreen] scale];
+        self.selectedView.frame = frame;
+    }
+}
+
 @end

Classes/ExplorerToolbar/FLEXManager.h

@@ -7,6 +7,7 @@
 //
 
 #import <Foundation/Foundation.h>
+#import <UIKit/UIKit.h>
 
 @interface FLEXManager : NSObject
 
@@ -17,15 +18,34 @@
 - (void)showExplorer;
 - (void)hideExplorer;
 
+#pragma mark - Network Debugging
+
 /// If this property is set to YES, FLEX will swizzle NSURLConnection*Delegate and NSURLSession*Delegate methods
 /// on classes that conform to the protocols. This allows you to view network activity history from the main FLEX menu.
 /// Full responses are kept temporarily in a size limited cache and may be pruged under memory pressure.
 @property (nonatomic, assign, getter=isNetworkDebuggingEnabled) BOOL networkDebuggingEnabled;
 
-/// Defaults to 50 MB if never set. Values set here are presisted across launches of the app.
+/// Defaults to 25 MB if never set. Values set here are presisted across launches of the app.
 /// The response cache uses an NSCache, so it may purge prior to hitting the limit when the app is under memory pressure.
 @property (nonatomic, assign) NSUInteger networkResponseCacheByteLimit;
 
+#pragma mark - Keyboard Shortcuts
+
+/// Simulator keyboard shortcuts are enabled by default.
+/// The shortcuts will not fire when there is an active text field, text view, or other responder accepting key input.
+/// You can disable keyboard shortcuts if you have existing keyboard shortcuts that conflict with FLEX, or if you like doing things the hard way ;)
+/// Keyboard shortcuts are always disabled (and support is compiled out) in non-simulator builds
+@property (nonatomic, assign) BOOL simulatorShortcutsEnabled;
+
+/// Adds an action to run when the specified key & modifier combination is pressed
+/// @param key A single character string matching a key on the keyboard
+/// @param modifiers Modifier keys such as shift, command, or alt/option
+/// @param action The block to run on the main thread when the key & modifier combination is recognized.
+/// @param description Shown the the keyboard shortcut help menu, which is accessed via the '?' key.
+/// @note The action block will be retained for the duration of the application. You may want to use weak references.
+/// @note FLEX registers several default keyboard shortcuts. Use the '?' key to see a list of shortcuts.
+- (void)registerSimulatorShortcutWithKey:(NSString *)key modifiers:(UIKeyModifierFlags)modifiers action:(dispatch_block_t)action description:(NSString *)description;
+
 #pragma mark - Extensions
 
 /// Adds an entry at the bottom of the list of Global State items. Call this method before this view controller is displayed.

Classes/ExplorerToolbar/FLEXManager.m

@@ -0,0 +1,356 @@
+//
+//  FLEXManager.m
+//  Flipboard
+//
+//  Created by Ryan Olson on 4/4/14.
+//  Copyright (c) 2014 Flipboard. All rights reserved.
+//
+
+#import "FLEXManager.h"
+#import "FLEXExplorerViewController.h"
+#import "FLEXWindow.h"
+#import "FLEXGlobalsTableViewControllerEntry.h"
+#import "FLEXObjectExplorerFactory.h"
+#import "FLEXObjectExplorerViewController.h"
+#import "FLEXNetworkObserver.h"
+#import "FLEXNetworkRecorder.h"
+#import "FLEXKeyboardShortcutManager.h"
+#import "FLEXFileBrowserTableViewController.h"
+#import "FLEXNetworkHistoryTableViewController.h"
+#import "FLEXKeyboardHelpViewController.h"
+
+@interface FLEXManager () <FLEXWindowEventDelegate, FLEXExplorerViewControllerDelegate>
+
+@property (nonatomic, strong) FLEXWindow *explorerWindow;
+@property (nonatomic, strong) FLEXExplorerViewController *explorerViewController;
+
+@property (nonatomic, readonly, strong) NSMutableArray *userGlobalEntries;
+
+@end
+
+@implementation FLEXManager
+
++ (instancetype)sharedManager
+{
+    static FLEXManager *sharedManager = nil;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        sharedManager = [[[self class] alloc] init];
+    });
+    return sharedManager;
+}
+
+- (instancetype)init
+{
+    self = [super init];
+    if (self) {
+        _userGlobalEntries = [[NSMutableArray alloc] init];
+    }
+    return self;
+}
+
+- (FLEXWindow *)explorerWindow
+{
+    NSAssert([NSThread isMainThread], @"You must use %@ from the main thread only.", NSStringFromClass([self class]));
+    
+    if (!_explorerWindow) {
+        _explorerWindow = [[FLEXWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
+        _explorerWindow.eventDelegate = self;
+        _explorerWindow.rootViewController = self.explorerViewController;
+    }
+    
+    return _explorerWindow;
+}
+
+- (FLEXExplorerViewController *)explorerViewController
+{
+    if (!_explorerViewController) {
+        _explorerViewController = [[FLEXExplorerViewController alloc] init];
+        _explorerViewController.delegate = self;
+    }
+
+    return _explorerViewController;
+}
+
+- (void)showExplorer
+{
+    self.explorerWindow.hidden = NO;
+}
+
+- (void)hideExplorer
+{
+    self.explorerWindow.hidden = YES;
+}
+
+- (BOOL)isHidden
+{
+    return self.explorerWindow.isHidden;
+}
+
+- (BOOL)isNetworkDebuggingEnabled
+{
+    return [FLEXNetworkObserver isEnabled];
+}
+
+- (void)setNetworkDebuggingEnabled:(BOOL)networkDebuggingEnabled
+{
+    [FLEXNetworkObserver setEnabled:networkDebuggingEnabled];
+}
+
+- (NSUInteger)networkResponseCacheByteLimit
+{
+    return [[FLEXNetworkRecorder defaultRecorder] responseCacheByteLimit];
+}
+
+- (void)setNetworkResponseCacheByteLimit:(NSUInteger)networkResponseCacheByteLimit
+{
+    [[FLEXNetworkRecorder defaultRecorder] setResponseCacheByteLimit:networkResponseCacheByteLimit];
+}
+
+#pragma mark - FLEXWindowEventDelegate
+
+- (BOOL)shouldHandleTouchAtPoint:(CGPoint)pointInWindow
+{
+    // Ask the explorer view controller
+    return [self.explorerViewController shouldReceiveTouchAtWindowPoint:pointInWindow];
+}
+
+- (BOOL)canBecomeKeyWindow
+{
+    // Only when the explorer view controller wants it because it needs to accept key input & affect the status bar.
+    return [self.explorerViewController wantsWindowToBecomeKey];
+}
+
+
+#pragma mark - FLEXExplorerViewControllerDelegate
+
+- (void)explorerViewControllerDidFinish:(FLEXExplorerViewController *)explorerViewController
+{
+    [self hideExplorer];
+}
+
+#pragma mark - Simulator Shortcuts
+
+- (void)registerSimulatorShortcutWithKey:(NSString *)key modifiers:(UIKeyModifierFlags)modifiers action:(dispatch_block_t)action description:(NSString *)description
+{
+# if TARGET_OS_SIMULATOR
+    [[FLEXKeyboardShortcutManager sharedManager] registerSimulatorShortcutWithKey:key modifiers:modifiers action:action description:description];
+#endif
+}
+
+- (void)setSimulatorShortcutsEnabled:(BOOL)simulatorShortcutsEnabled
+{
+# if TARGET_OS_SIMULATOR
+    [[FLEXKeyboardShortcutManager sharedManager] setEnabled:simulatorShortcutsEnabled];
+#endif
+}
+
+- (BOOL)simulatorShortcutsEnabled
+{
+# if TARGET_OS_SIMULATOR
+    return [[FLEXKeyboardShortcutManager sharedManager] isEnabled];
+#else
+    return NO;
+#endif
+}
+
+- (void)registerDefaultSimulatorShortcuts
+{
+    [self registerSimulatorShortcutWithKey:@"f" modifiers:0 action:^{
+        if ([self isHidden]) {
+            [self showExplorer];
+        } else {
+            [self hideExplorer];
+        }
+    } description:@"Toggle FLEX toolbar"];
+    
+    [self registerSimulatorShortcutWithKey:@"g" modifiers:0 action:^{
+        [self showExplorerIfNeeded];
+        [self.explorerViewController toggleMenuTool];
+    } description:@"Toggle FLEX globlas menu"];
+    
+    [self registerSimulatorShortcutWithKey:@"v" modifiers:0 action:^{
+        [self showExplorerIfNeeded];
+        [self.explorerViewController toggleViewsTool];
+    } description:@"Toggle view hierarchy menu"];
+    
+    [self registerSimulatorShortcutWithKey:@"s" modifiers:0 action:^{
+        [self showExplorerIfNeeded];
+        [self.explorerViewController toggleSelectTool];
+    } description:@"Toggle select tool"];
+    
+    [self registerSimulatorShortcutWithKey:@"m" modifiers:0 action:^{
+        [self showExplorerIfNeeded];
+        [self.explorerViewController toggleMoveTool];
+    } description:@"Toggle move tool"];
+    
+    [self registerSimulatorShortcutWithKey:@"n" modifiers:0 action:^{
+        [self toggleTopViewControllerOfClass:[FLEXNetworkHistoryTableViewController class]];
+    } description:@"Toggle network history view"];
+    
+    [self registerSimulatorShortcutWithKey:UIKeyInputDownArrow modifiers:0 action:^{
+        if ([self isHidden]) {
+            [self tryScrollDown];
+        } else {
+            [self.explorerViewController handleDownArrowKeyPressed];
+        }
+    } description:@"Cycle view selection\n\t\tMove view down\n\t\tScroll down"];
+    
+    [self registerSimulatorShortcutWithKey:UIKeyInputUpArrow modifiers:0 action:^{
+        if ([self isHidden]) {
+            [self tryScrollUp];
+        } else {
+            [self.explorerViewController handleUpArrowKeyPressed];
+        }
+    } description:@"Cycle view selection\n\t\tMove view up\n\t\tScroll up"];
+    
+    [self registerSimulatorShortcutWithKey:UIKeyInputRightArrow modifiers:0 action:^{
+        if (![self isHidden]) {
+            [self.explorerViewController handleRightArrowKeyPressed];
+        }
+    } description:@"Move selected view right"];
+    
+    [self registerSimulatorShortcutWithKey:UIKeyInputLeftArrow modifiers:0 action:^{
+        if ([self isHidden]) {
+            [self tryGoBack];
+        } else {
+            [self.explorerViewController handleLeftArrowKeyPressed];
+        }
+    } description:@"Move selected view left"];
+    
+    [self registerSimulatorShortcutWithKey:@"?" modifiers:0 action:^{
+        [self toggleTopViewControllerOfClass:[FLEXKeyboardHelpViewController class]];
+    } description:@"Toggle (this) help menu"];
+    
+    [self registerSimulatorShortcutWithKey:UIKeyInputEscape modifiers:0 action:^{
+        [[[self topViewController] presentingViewController] dismissViewControllerAnimated:YES completion:nil];
+    } description:@"End editing text\n\t\tDismiss top view controller"];
+    
+    [self registerSimulatorShortcutWithKey:@"o" modifiers:UIKeyModifierCommand|UIKeyModifierShift action:^{
+        [self toggleTopViewControllerOfClass:[FLEXFileBrowserTableViewController class]];
+    } description:@"Toggle file browser menu"];
+}
+
++ (void)load
+{
+    dispatch_async(dispatch_get_main_queue(), ^{
+        [[[self class] sharedManager] registerDefaultSimulatorShortcuts];
+    });
+}
+
+#pragma mark - Extensions
+
+- (void)registerGlobalEntryWithName:(NSString *)entryName objectFutureBlock:(id (^)(void))objectFutureBlock
+{
+    NSParameterAssert(entryName);
+    NSParameterAssert(objectFutureBlock);
+    NSAssert([NSThread isMainThread], @"This method must be called from the main thread.");
+
+    entryName = entryName.copy;
+    FLEXGlobalsTableViewControllerEntry *entry = [FLEXGlobalsTableViewControllerEntry entryWithNameFuture:^NSString *{
+        return entryName;
+    } viewControllerFuture:^UIViewController *{
+        return [FLEXObjectExplorerFactory explorerViewControllerForObject:objectFutureBlock()];
+    }];
+
+    [self.userGlobalEntries addObject:entry];
+}
+
+- (void)registerGlobalEntryWithName:(NSString *)entryName viewControllerFutureBlock:(UIViewController * (^)(void))viewControllerFutureBlock
+{
+    NSParameterAssert(entryName);
+    NSParameterAssert(viewControllerFutureBlock);
+    NSAssert([NSThread isMainThread], @"This method must be called from the main thread.");
+
+    entryName = entryName.copy;
+    FLEXGlobalsTableViewControllerEntry *entry = [FLEXGlobalsTableViewControllerEntry entryWithNameFuture:^NSString *{
+        return entryName;
+    } viewControllerFuture:^UIViewController *{
+        UIViewController *viewController = viewControllerFutureBlock();
+        NSCAssert(viewController, @"'%@' entry returned nil viewController. viewControllerFutureBlock should never return nil.", entryName);
+        return viewController;
+    }];
+
+    [self.userGlobalEntries addObject:entry];
+}
+
+- (void)tryScrollDown
+{
+    UIScrollView *firstScrollView = [self firstScrollView];
+    CGPoint contentOffset = [firstScrollView contentOffset];
+    CGFloat distance = floor(firstScrollView.frame.size.height / 2.0);
+    CGFloat maxContentOffsetY = firstScrollView.contentSize.height + firstScrollView.contentInset.bottom - firstScrollView.frame.size.height;
+    distance = MIN(maxContentOffsetY - firstScrollView.contentOffset.y, distance);
+    contentOffset.y += distance;
+    [firstScrollView setContentOffset:contentOffset animated:YES];
+}
+
+- (void)tryScrollUp
+{
+    UIScrollView *firstScrollView = [self firstScrollView];
+    CGPoint contentOffset = [firstScrollView contentOffset];
+    CGFloat distance = floor(firstScrollView.frame.size.height / 2.0);
+    CGFloat minContentOffsetY = -firstScrollView.contentInset.top;
+    distance = MIN(firstScrollView.contentOffset.y - minContentOffsetY, distance);
+    contentOffset.y -= distance;
+    [firstScrollView setContentOffset:contentOffset animated:YES];
+}
+
+- (UIScrollView *)firstScrollView
+{
+    NSMutableArray *views = [[[[UIApplication sharedApplication] keyWindow] subviews] mutableCopy];
+    UIScrollView *scrollView = nil;
+    while ([views count] > 0) {
+        UIView *view = [views firstObject];
+        [views removeObjectAtIndex:0];
+        if ([view isKindOfClass:[UIScrollView class]]) {
+            scrollView = (UIScrollView *)view;
+            break;
+        } else {
+            [views addObjectsFromArray:[view subviews]];
+        }
+    }
+    return scrollView;
+}
+
+- (void)tryGoBack
+{
+    UINavigationController *navigationController = nil;
+    UIViewController *topViewController = [self topViewController];
+    if ([topViewController isKindOfClass:[UINavigationController class]]) {
+        navigationController = (UINavigationController *)topViewController;
+    } else {
+        navigationController = topViewController.navigationController;
+    }
+    [navigationController popViewControllerAnimated:YES];
+}
+
+- (UIViewController *)topViewController
+{
+    UIViewController *topViewController = [[[UIApplication sharedApplication] keyWindow] rootViewController];
+    while ([topViewController presentedViewController]) {
+        topViewController = [topViewController presentedViewController];
+    }
+    return topViewController;
+}
+
+- (void)toggleTopViewControllerOfClass:(Class)class
+{
+    UIViewController *topViewController = [self topViewController];
+    if ([topViewController isKindOfClass:[UINavigationController class]] && [[[(UINavigationController *)topViewController viewControllers] firstObject] isKindOfClass:[class class]]) {
+        [[topViewController presentingViewController] dismissViewControllerAnimated:YES completion:nil];
+    } else {
+        id viewController = [[class alloc] init];
+        UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:viewController];
+        [topViewController presentViewController:navigationController animated:YES completion:nil];
+    }
+}
+
+- (void)showExplorerIfNeeded
+{
+    if ([self isHidden]) {
+        [self showExplorer];
+    }
+}
+
+@end

Classes/ExplorerToolbar/FLEXWindow.h

@@ -19,5 +19,6 @@
 @protocol FLEXWindowEventDelegate <NSObject>
 
 - (BOOL)shouldHandleTouchAtPoint:(CGPoint)pointInWindow;
+- (BOOL)canBecomeKeyWindow;
 
 @end

Classes/ExplorerToolbar/FLEXWindow.m

@@ -0,0 +1,67 @@
+//
+//  FLEXWindow.m
+//  Flipboard
+//
+//  Created by Ryan Olson on 4/13/14.
+//  Copyright (c) 2014 Flipboard. All rights reserved.
+//
+
+#import "FLEXWindow.h"
+#import <objc/runtime.h>
+
+@implementation FLEXWindow
+
+- (id)initWithFrame:(CGRect)frame
+{
+    self = [super initWithFrame:frame];
+    if (self) {
+        self.backgroundColor = [UIColor clearColor];
+        // Some apps have windows at UIWindowLevelStatusBar + n.
+        // If we make the window level too high, we block out UIAlertViews.
+        // There's a balance between staying above the app's windows and staying below alerts.
+        // UIWindowLevelStatusBar + 100 seems to hit that balance.
+        self.windowLevel = UIWindowLevelStatusBar + 100.0;
+    }
+    return self;
+}
+
+- (BOOL)pointInside:(CGPoint)point withEvent:(UIEvent *)event
+{
+    BOOL pointInside = NO;
+    if ([self.eventDelegate shouldHandleTouchAtPoint:point]) {
+        pointInside = [super pointInside:point withEvent:event];
+    }
+    return pointInside;
+}
+
+- (BOOL)shouldAffectStatusBarAppearance
+{
+    return [self isKeyWindow];
+}
+
+- (BOOL)canBecomeKeyWindow
+{
+    return [self.eventDelegate canBecomeKeyWindow];
+}
+
++ (void)initialize
+{
+    // This adds a method (superclass override) at runtime which gives us the status bar behavior we want.
+    // The FLEX window is intended to be an overlay that generally doesn't affect the app underneath.
+    // Most of the time, we want the app's main window(s) to be in control of status bar behavior.
+    // Done at runtime with an obfuscated selector because it is private API. But you shoudn't ship this to the App Store anyways...
+    NSString *canAffectSelectorString = [@[@"_can", @"Affect", @"Status", @"Bar", @"Appearance"] componentsJoinedByString:@""];
+    SEL canAffectSelector = NSSelectorFromString(canAffectSelectorString);
+    Method shouldAffectMethod = class_getInstanceMethod(self, @selector(shouldAffectStatusBarAppearance));
+    IMP canAffectImplementation = method_getImplementation(shouldAffectMethod);
+    class_addMethod(self, canAffectSelector, canAffectImplementation, method_getTypeEncoding(shouldAffectMethod));
+
+    // One more...
+    NSString *canBecomeKeySelectorString = [NSString stringWithFormat:@"_%@", NSStringFromSelector(@selector(canBecomeKeyWindow))];
+    SEL canBecomeKeySelector = NSSelectorFromString(canBecomeKeySelectorString);
+    Method canBecomeKeyMethod = class_getInstanceMethod(self, @selector(canBecomeKeyWindow));
+    IMP canBecomeKeyImplementation = method_getImplementation(canBecomeKeyMethod);
+    class_addMethod(self, canBecomeKeySelector, canBecomeKeyImplementation, method_getTypeEncoding(canBecomeKeyMethod));
+}
+
+@end

Classes/FLEX.h

@@ -0,0 +1,17 @@
+//
+//  FLEX.h
+//  FLEX
+//
+//  Created by Eric Horacek on 7/18/15.
+//  Copyright (c) 2015 Flipboard. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+//! Project version number for FLEX.
+FOUNDATION_EXPORT double FLEXVersionNumber;
+
+//! Project version string for FLEX.
+FOUNDATION_EXPORT const unsigned char FLEXVersionString[];
+
+#import <FLEX/FLEXManager.h>

Classes/GlobalStateExplorers/FLEXFileBrowserFileOperationController.m

@@ -7,11 +7,14 @@
 //
 
 #import "FLEXFileBrowserFileOperationController.h"
+#import <UIKit/UIKit.h>
 
 @interface FLEXFileBrowserFileDeleteOperationController () <UIAlertViewDelegate>
 
 @property (nonatomic, copy, readonly) NSString *path;
 
+- (instancetype)initWithPath:(NSString *)path NS_DESIGNATED_INITIALIZER;
+
 @end
 
 @implementation FLEXFileBrowserFileDeleteOperationController
@@ -73,6 +76,8 @@
 
 @property (nonatomic, copy, readonly) NSString *path;
 
+- (instancetype)initWithPath:(NSString *)path NS_DESIGNATED_INITIALIZER;
+
 @end
 
 @implementation FLEXFileBrowserFileRenameOperationController

Classes/GlobalStateExplorers/FLEXFileBrowserTableViewController.m

@@ -316,7 +316,7 @@
         NSString *subpath = [self.childPaths objectAtIndex:indexPath.row];
         fullPath = [self.path stringByAppendingPathComponent:subpath];
     } else {
-        indexPath = [self.searchDisplayController.searchResultsTableView indexPathForCell:sender];
+        indexPath = [self.searchController.searchResultsTableView indexPathForCell:sender];
         fullPath = [self.searchPaths objectAtIndex:indexPath.row];
     }
 
@@ -334,7 +334,7 @@
         NSString *subpath = [self.childPaths objectAtIndex:indexPath.row];
         fullPath = [self.path stringByAppendingPathComponent:subpath];
     } else {
-        indexPath = [self.searchDisplayController.searchResultsTableView indexPathForCell:sender];
+        indexPath = [self.searchController.searchResultsTableView indexPathForCell:sender];
         fullPath = [self.searchPaths objectAtIndex:indexPath.row];
     }
 
@@ -345,9 +345,9 @@
 
 - (void)reloadDisplayedPaths
 {
-    if (self.searchDisplayController.isActive) {
+    if (self.searchController.isActive) {
         [self reloadSearchPaths];
-        [self.searchDisplayController.searchResultsTableView reloadData];
+        [self.searchController.searchResultsTableView reloadData];
     } else {
         [self reloadChildPaths];
         [self.tableView reloadData];

Classes/Info.plist

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

Classes/Network/FLEXNetworkHistoryTableViewController.m

@@ -62,7 +62,10 @@
 
     UISearchBar *searchBar = [[UISearchBar alloc] init];
     [searchBar sizeToFit];
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
     self.searchController = [[UISearchDisplayController alloc] initWithSearchBar:searchBar contentsController:self];
+#pragma clang diagnostic pop
     self.searchController.delegate = self;
     self.searchController.searchResultsDataSource = self;
     self.searchController.searchResultsDelegate = self;
@@ -229,10 +232,10 @@
     for (UITableView *tableView in tableViews) {
         for (FLEXNetworkTransactionTableViewCell *cell in [tableView visibleCells]) {
             if ([cell.transaction isEqual:transaction]) {
-                NSIndexPath *indexPath = [tableView indexPathForCell:cell];
-                if (indexPath) {
-                    [tableView reloadRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationNone];
-                }
+                // Using -[UITableView reloadRowsAtIndexPaths:withRowAnimation:] is overkill here and kicks off a lot of
+                // work that can make the table view somewhat unresponseive when lots of updates are streaming in.
+                // We just need to tell the cell that it needs to re-layout.
+                [cell setNeedsLayout];
                 break;
             }
         }
@@ -358,9 +361,9 @@
             return [[transaction.request.URL absoluteString] rangeOfString:searchString options:NSCaseInsensitiveSearch].length > 0;
         }]];
         dispatch_async(dispatch_get_main_queue(), ^{
-            if ([self.searchDisplayController.searchBar.text isEqual:searchString]) {
+            if ([self.searchController.searchBar.text isEqual:searchString]) {
                 self.filteredNetworkTransactions = filteredNetworkTransactions;
-                [self.searchDisplayController.searchResultsTableView reloadData];
+                [self.searchController.searchResultsTableView reloadData];
             }
         });
     });

Classes/Network/FLEXNetworkRecorder.m

@@ -103,6 +103,8 @@ NSString *const kFLEXNetworkRecorderResponseCacheLimitDefaultsKey = @"com.flex.r
 
 - (void)recordRequestWillBeSentWithRequestID:(NSString *)requestID request:(NSURLRequest *)request redirectResponse:(NSURLResponse *)redirectResponse
 {
+    NSDate *startDate = [NSDate date];
+
     if (redirectResponse) {
         [self recordResponseReceivedWithRequestID:requestID response:redirectResponse];
         [self recordLoadingFinishedWithRequestID:requestID responseBody:nil];
@@ -112,7 +114,7 @@ NSString *const kFLEXNetworkRecorderResponseCacheLimitDefaultsKey = @"com.flex.r
         FLEXNetworkTransaction *transaction = [[FLEXNetworkTransaction alloc] init];
         transaction.requestID = requestID;
         transaction.request = request;
-        transaction.startTime = [NSDate date];
+        transaction.startTime = startDate;
 
         [self.orderedTransactions insertObject:transaction atIndex:0];
         [self.networkTransactionsForRequestIdentifiers setObject:transaction forKey:requestID];
@@ -124,6 +126,8 @@ NSString *const kFLEXNetworkRecorderResponseCacheLimitDefaultsKey = @"com.flex.r
 
 - (void)recordResponseReceivedWithRequestID:(NSString *)requestID response:(NSURLResponse *)response
 {
+    NSDate *responseDate = [NSDate date];
+
     dispatch_async(self.queue, ^{
         FLEXNetworkTransaction *transaction = [self.networkTransactionsForRequestIdentifiers objectForKey:requestID];
         if (!transaction) {
@@ -131,7 +135,7 @@ NSString *const kFLEXNetworkRecorderResponseCacheLimitDefaultsKey = @"com.flex.r
         }
         transaction.response = response;
         transaction.transactionState = FLEXNetworkTransactionStateReceivingData;
-        transaction.latency = -[transaction.startTime timeIntervalSinceNow];
+        transaction.latency = -[transaction.startTime timeIntervalSinceDate:responseDate];
 
         [self postUpdateNotificationForTransaction:transaction];
     });
@@ -152,13 +156,15 @@ NSString *const kFLEXNetworkRecorderResponseCacheLimitDefaultsKey = @"com.flex.r
 
 - (void)recordLoadingFinishedWithRequestID:(NSString *)requestID responseBody:(NSData *)responseBody
 {
+    NSDate *finishedDate = [NSDate date];
+
     dispatch_async(self.queue, ^{
         FLEXNetworkTransaction *transaction = [self.networkTransactionsForRequestIdentifiers objectForKey:requestID];
         if (!transaction) {
             return;
         }
         transaction.transactionState = FLEXNetworkTransactionStateFinished;
-        transaction.duration = -[transaction.startTime timeIntervalSinceNow];
+        transaction.duration = -[transaction.startTime timeIntervalSinceDate:finishedDate];
 
         BOOL shouldCache = [responseBody length] > 0;
         if (!self.shouldCacheMediaResponses) {
@@ -173,7 +179,7 @@ NSString *const kFLEXNetworkRecorderResponseCacheLimitDefaultsKey = @"com.flex.r
         }
 
         NSString *mimeType = transaction.response.MIMEType;
-        if ([mimeType hasPrefix:@"image/"]) {
+        if ([mimeType hasPrefix:@"image/"] && [responseBody length] > 0) {
             // Thumbnail image previews on a separate background queue
             dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
                 NSInteger maxPixelDimension = [[UIScreen mainScreen] scale] * 32.0;

Classes/Network/FLEXNetworkSettingsTableViewController.m

@@ -39,9 +39,6 @@
     UITableViewCell *networkDebuggingCell = [self switchCellWithTitle:@"Network Debugging" toggleAction:@selector(networkDebuggingToggled:) isOn:[FLEXNetworkObserver isEnabled]];
     [mutableCells addObject:networkDebuggingCell];
 
-    UITableViewCell *enableOnLaunchCell = [self switchCellWithTitle:@"Enable on Launch" toggleAction:@selector(enableOnLaunchToggled:) isOn:[FLEXNetworkObserver shouldEnableOnLaunch]];
-    [mutableCells addObject:enableOnLaunchCell];
-
     UITableViewCell *cacheMediaResponsesCell = [self switchCellWithTitle:@"Cache Media Responses" toggleAction:@selector(cacheMediaResponsesToggled:) isOn:NO];
     [mutableCells addObject:cacheMediaResponsesCell];
 
@@ -64,11 +61,6 @@
     [FLEXNetworkObserver setEnabled:sender.isOn];
 }
 
-- (void)enableOnLaunchToggled:(UISwitch *)sender
-{
-    [FLEXNetworkObserver setShouldEnableOnLaunch:sender.isOn];
-}
-
 - (void)cacheMediaResponsesToggled:(UISwitch *)sender
 {
     [[FLEXNetworkRecorder defaultRecorder] setShouldCacheMediaResponses:sender.isOn];

Classes/Network/FLEXNetworkTransaction.h

@@ -7,6 +7,7 @@
 //
 
 #import <Foundation/Foundation.h>
+#import "UIKit/UIKit.h"
 
 typedef NS_ENUM(NSInteger, FLEXNetworkTransactionState) {
     FLEXNetworkTransactionStateUnstarted,

Classes/Network/FLEXNetworkTransactionDetailTableViewController.m

@@ -53,6 +53,7 @@ typedef UIViewController *(^FLEXNetworkDetailRowSelectionFuture)(void);
     self = [super initWithStyle:UITableViewStyleGrouped];
     if (self) {
         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleTransactionUpdatedNotification:) name:kFLEXNetworkRecorderTransactionUpdatedNotification object:nil];
+        self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Copy" style:UIBarButtonItemStylePlain target:self action:@selector(copyButtonPressed:)];
     }
     return self;
 }
@@ -117,6 +118,30 @@ typedef UIViewController *(^FLEXNetworkDetailRowSelectionFuture)(void);
     }
 }
 
+- (void)copyButtonPressed:(id)sender
+{
+    NSMutableString *requestDetailString = [NSMutableString string];
+
+    for (FLEXNetworkDetailSection *section in self.sections) {
+        if ([section.rows count] > 0) {
+            if ([section.title length] > 0) {
+                [requestDetailString appendString:section.title];
+                [requestDetailString appendString:@"\n\n"];
+            }
+            for (FLEXNetworkDetailRow *row in section.rows) {
+                NSString *rowDescription = [[[self class] attributedTextForRow:row] string];
+                if ([rowDescription length] > 0) {
+                    [requestDetailString appendString:rowDescription];
+                    [requestDetailString appendString:@"\n"];
+                }
+            }
+            [requestDetailString appendString:@"\n\n"];
+        }
+    }
+
+    [[UIPasteboard generalPasteboard] setString:requestDetailString];
+}
+
 #pragma mark - Table view data source
 
 - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
@@ -179,6 +204,26 @@ typedef UIViewController *(^FLEXNetworkDetailRowSelectionFuture)(void);
     return [sectionModel.rows objectAtIndex:indexPath.row];
 }
 
+#pragma mark - Cell Copying
+
+- (BOOL)tableView:(UITableView *)tableView shouldShowMenuForRowAtIndexPath:(NSIndexPath *)indexPath
+{
+    return YES;
+}
+
+- (BOOL)tableView:(UITableView *)tableView canPerformAction:(SEL)action forRowAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender
+{
+    return action == @selector(copy:);
+}
+
+- (void)tableView:(UITableView *)tableView performAction:(SEL)action forRowAtIndexPath:(NSIndexPath *)indexPath withSender:(id)sender
+{
+    if (action == @selector(copy:)) {
+        FLEXNetworkDetailRow *row = [self rowModelAtIndexPath:indexPath];
+        [[UIPasteboard generalPasteboard] setString:row.detailText];
+    }
+}
+
 #pragma mark - View Configuration
 
 + (NSAttributedString *)attributedTextForRow:(FLEXNetworkDetailRow *)row
@@ -400,7 +445,7 @@ typedef UIViewController *(^FLEXNetworkDetailRowSelectionFuture)(void);
 {
     // FIXME (RKO): Don't rely on UTF8 string encoding
     UIViewController *detailViewController = nil;
-    if ([mimeType isEqual:@"application/json"] || [mimeType isEqual:@"application/javascript"] || [mimeType isEqual:@"text/javascript"]) {
+    if ([FLEXUtility isValidJSONData:data]) {
         NSString *prettyJSON = [FLEXUtility prettyJSONStringFromData:data];
         if ([prettyJSON length] > 0) {
             detailViewController = [[FLEXWebViewController alloc] initWithText:prettyJSON];

Classes/Network/PonyDebugger/FLEXNetworkObserver.h

@@ -12,6 +12,8 @@
 //  which Square, Inc. licenses this file to you.
 //
 
+#import <Foundation/Foundation.h>
+
 extern NSString *const kFLEXNetworkObserverEnabledStateChangedNotification;
 
 /// This class swizzles NSURLConnection and NSURLSession delegate methods to observe events in the URL loading system.
@@ -20,12 +22,8 @@ extern NSString *const kFLEXNetworkObserverEnabledStateChangedNotification;
 
 /// Swizzling occurs when the observer is enabled for the first time.
 /// This reduces the impact of FLEX if network debugging is not desired.
+/// NOTE: this setting persists between launches of the app.
 + (void)setEnabled:(BOOL)enabled;
 + (BOOL)isEnabled;
 
-/// The enable on launch setting is persisted accross launches of the app.
-/// If YES, the observer will automatically enable itself early in the application lifecycle.
-+ (void)setShouldEnableOnLaunch:(BOOL)shouldEnableOnLaunch;
-+ (BOOL)shouldEnableOnLaunch;
-
 @end

Classes/Network/PonyDebugger/FLEXNetworkObserver.m

@@ -14,13 +14,14 @@
 
 #import "FLEXNetworkObserver.h"
 #import "FLEXNetworkRecorder.h"
+#import "FLEXUtility.h"
 
 #import <objc/runtime.h>
 #import <objc/message.h>
 #import <dispatch/queue.h>
 
 NSString *const kFLEXNetworkObserverEnabledStateChangedNotification = @"kFLEXNetworkObserverEnabledStateChangedNotification";
-static NSString *const kFLEXNetworkObserverEnableOnLaunchDefaultsKey = @"com.flex.FLEXNetworkObserver.enableOnLaunch";
+static NSString *const kFLEXNetworkObserverEnabledDefaultsKey = @"com.flex.FLEXNetworkObserver.enableOnLaunch";
 
 typedef void (^NSURLSessionAsyncCompletion)(id fileURLOrData, NSURLResponse *response, NSError *error);
 
@@ -67,7 +68,6 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
 
 @interface FLEXNetworkObserver ()
 
-@property (nonatomic, assign, getter=isEnabled) BOOL enabled;
 @property (nonatomic, strong) NSMutableDictionary *requestStatesForRequestIDs;
 @property (nonatomic, strong) dispatch_queue_t queue;
 
@@ -79,43 +79,32 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
 
 + (void)setEnabled:(BOOL)enabled
 {
+    BOOL previouslyEnabled = [self isEnabled];
+    
+    [[NSUserDefaults standardUserDefaults] setBool:enabled forKey:kFLEXNetworkObserverEnabledDefaultsKey];
+    
     if (enabled) {
         // Inject if needed. This injection is protected with a dispatch_once, so we're ok calling it multiple times.
         // By doing the injection lazily, we keep the impact of the tool lower when this feature isn't enabled.
         [self injectIntoAllNSURLConnectionDelegateClasses];
     }
-    [[self sharedObserver] setEnabled:enabled];
-}
-
-+ (BOOL)isEnabled
-{
-    return [[self sharedObserver] isEnabled];
-}
-
-- (void)setEnabled:(BOOL)enabled
-{
-    if (_enabled != enabled) {
-        _enabled = enabled;
+    
+    if (previouslyEnabled != enabled) {
         [[NSNotificationCenter defaultCenter] postNotificationName:kFLEXNetworkObserverEnabledStateChangedNotification object:self];
     }
 }
 
-+ (void)setShouldEnableOnLaunch:(BOOL)shouldEnableOnLaunch
++ (BOOL)isEnabled
 {
-    [[NSUserDefaults standardUserDefaults] setObject:@YES forKey:kFLEXNetworkObserverEnableOnLaunchDefaultsKey];
-}
-
-+ (BOOL)shouldEnableOnLaunch
-{
-    return [[[NSUserDefaults standardUserDefaults] objectForKey:kFLEXNetworkObserverEnableOnLaunchDefaultsKey] boolValue];
+    return [[[NSUserDefaults standardUserDefaults] objectForKey:kFLEXNetworkObserverEnabledDefaultsKey] boolValue];
 }
 
 + (void)load
 {
     // We don't want to do the swizzling from +load because not all the classes may be loaded at this point.
     dispatch_async(dispatch_get_main_queue(), ^{
-        if ([self shouldEnableOnLaunch]) {
-            [self setEnabled:YES];
+        if ([self isEnabled]) {
+            [self injectIntoAllNSURLConnectionDelegateClasses];
         }
     });
 }
@@ -139,16 +128,19 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
 
 #pragma mark Delegate Injection Convenience Methods
 
-+ (SEL)swizzledSelectorForSelector:(SEL)selector
-{
-    return NSSelectorFromString([NSString stringWithFormat:@"_flex_swizzle_%x_%@", arc4random(), NSStringFromSelector(selector)]);
-}
-
 /// All swizzled delegate methods should make use of this guard.
 /// This will prevent duplicated sniffing when the original implementation calls up to a superclass implementation which we've also swizzled.
 /// The superclass implementation (and implementations in classes above that) will be executed without inteference if called from the original implementation.
 + (void)sniffWithoutDuplicationForObject:(NSObject *)object selector:(SEL)selector sniffingBlock:(void (^)(void))sniffingBlock originalImplementationBlock:(void (^)(void))originalImplementationBlock
 {
+    // If we don't have an object to detect nested calls on, just run the original implmentation and bail.
+    // This case can happen if someone besides the URL loading system calls the delegate methods directly.
+    // See https://github.com/Flipboard/FLEX/issues/61 for an example.
+    if (!object) {
+        originalImplementationBlock();
+        return;
+    }
+
     const void *key = selector;
 
     // Don't run the sniffing block if we're inside a nested call
@@ -162,66 +154,6 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
     objc_setAssociatedObject(object, key, nil, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
 }
 
-+ (BOOL)instanceRespondsButDoesNotImplementSelector:(SEL)selector class:(Class)cls
-{
-    if ([cls instancesRespondToSelector:selector]) {
-        unsigned int numMethods = 0;
-        Method *methods = class_copyMethodList(cls, &numMethods);
-        
-        BOOL implementsSelector = NO;
-        for (int index = 0; index < numMethods; index++) {
-            SEL methodSelector = method_getName(methods[index]);
-            if (selector == methodSelector) {
-                implementsSelector = YES;
-                break;
-            }
-        }
-        
-        free(methods);
-        
-        if (!implementsSelector) {
-            return YES;
-        }
-    }
-    
-    return NO;
-}
-
-+ (void)replaceImplementationOfKnownSelector:(SEL)originalSelector onClass:(Class)class withBlock:(id)block swizzledSelector:(SEL)swizzledSelector
-{
-    // This method is only intended for swizzling methods that are know to exist on the class.
-    // Bail if that isn't the case.
-    Method originalMethod = class_getInstanceMethod(class, originalSelector);
-    if (!originalMethod) {
-        return;
-    }
-
-    IMP implementation = imp_implementationWithBlock(block);
-    class_addMethod(class, swizzledSelector, implementation, method_getTypeEncoding(originalMethod));
-    Method newMethod = class_getInstanceMethod(class, swizzledSelector);
-    method_exchangeImplementations(originalMethod, newMethod);
-}
-
-+ (void)replaceImplementationOfSelector:(SEL)selector withSelector:(SEL)swizzledSelector forClass:(Class)cls withMethodDescription:(struct objc_method_description)methodDescription implementationBlock:(id)implementationBlock undefinedBlock:(id)undefinedBlock
-{
-    if ([self instanceRespondsButDoesNotImplementSelector:selector class:cls]) {
-        return;
-    }
-
-    IMP implementation = imp_implementationWithBlock((id)([cls instancesRespondToSelector:selector] ? implementationBlock : undefinedBlock));
-    
-    Method oldMethod = class_getInstanceMethod(cls, selector);
-    if (oldMethod) {
-        class_addMethod(cls, swizzledSelector, implementation, methodDescription.types);
-         
-        Method newMethod = class_getInstanceMethod(cls, swizzledSelector);
-        
-        method_exchangeImplementations(oldMethod, newMethod);
-    } else {
-        class_addMethod(cls, selector, implementation, methodDescription.types);
-    }
-}
-
 #pragma mark - Delegate Injection
 
 + (void)injectIntoAllNSURLConnectionDelegateClasses
@@ -325,7 +257,7 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
     dispatch_once(&onceToken, ^{
         Class class = [NSURLConnection class];
         SEL selector = @selector(cancel);
-        SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+        SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
         Method originalCancel = class_getInstanceMethod(class, selector);
 
         void (^swizzleBlock)(NSURLConnection *) = ^(NSURLConnection *slf) {
@@ -344,14 +276,19 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
 {
     static dispatch_once_t onceToken;
     dispatch_once(&onceToken, ^{
-        Class class = [NSURLSessionTask class];
-        SEL selector = @selector(resume);
-        SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
-
-        if ([self instanceRespondsButDoesNotImplementSelector:selector class:class]) {
-            // Dummy NSURLSessionTask to get the actual class, needed for iOS 7 (__NSCFURLSessionTask)
-            class = [[[NSURLSession sharedSession] dataTaskWithURL:[NSURL URLWithString:@"about:blank"]] superclass];
+        // In iOS 7 resume lives in __NSCFLocalSessionTask
+        // In iOS 8 resume lives in NSURLSessionTask
+        // In iOS 9 resume lives in __NSCFURLSessionTask
+        Class class = Nil;
+        if (![[NSProcessInfo processInfo] respondsToSelector:@selector(operatingSystemVersion)]) {
+            class = NSClassFromString([@[@"__", @"NSC", @"FLocalS", @"ession", @"Task"] componentsJoinedByString:@""]);
+        } else if ([[NSProcessInfo processInfo] operatingSystemVersion].majorVersion < 9) {
+            class = [NSURLSessionTask class];
+        } else {
+            class = NSClassFromString([@[@"__", @"NSC", @"FURLS", @"ession", @"Task"] componentsJoinedByString:@""]);
         }
+        SEL selector = @selector(resume);
+        SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
 
         Method originalResume = class_getInstanceMethod(class, selector);
 
@@ -373,7 +310,7 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
     dispatch_once(&onceToken, ^{
         Class class = objc_getMetaClass(class_getName([NSURLConnection class]));
         SEL selector = @selector(sendAsynchronousRequest:queue:completionHandler:);
-        SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+        SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
 
         typedef void (^NSURLConnectionAsyncCompletion)(NSURLResponse* response, NSData* data, NSError* connectionError);
 
@@ -403,7 +340,7 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
             }
         };
         
-        [self replaceImplementationOfKnownSelector:selector onClass:class withBlock:asyncSwizzleBlock swizzledSelector:swizzledSelector];
+        [FLEXUtility replaceImplementationOfKnownSelector:selector onClass:class withBlock:asyncSwizzleBlock swizzledSelector:swizzledSelector];
     });
 }
 
@@ -413,7 +350,7 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
     dispatch_once(&onceToken, ^{
         Class class = objc_getMetaClass(class_getName([NSURLConnection class]));
         SEL selector = @selector(sendSynchronousRequest:returningResponse:error:);
-        SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+        SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
 
         NSData *(^syncSwizzleBlock)(Class, NSURLRequest *, NSURLResponse **, NSError **) = ^NSData *(Class slf, NSURLRequest *request, NSURLResponse **response, NSError **error) {
             NSData *data = nil;
@@ -445,7 +382,7 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
             return data;
         };
         
-        [self replaceImplementationOfKnownSelector:selector onClass:class withBlock:syncSwizzleBlock swizzledSelector:swizzledSelector];
+        [FLEXUtility replaceImplementationOfKnownSelector:selector onClass:class withBlock:syncSwizzleBlock swizzledSelector:swizzledSelector];
     });
 }
 
@@ -457,7 +394,6 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
 
         // The method signatures here are close enough that we can use the same logic to inject into all of them.
         const SEL selectors[] = {
-            @selector(dataTaskWithHTTPGetRequest:completionHandler:),
             @selector(dataTaskWithRequest:completionHandler:),
             @selector(dataTaskWithURL:completionHandler:),
             @selector(downloadTaskWithRequest:completionHandler:),
@@ -469,9 +405,9 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
 
         for (int selectorIndex = 0; selectorIndex < numSelectors; selectorIndex++) {
             SEL selector = selectors[selectorIndex];
-            SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+            SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
 
-            if ([self instanceRespondsButDoesNotImplementSelector:selector class:class]) {
+            if ([FLEXUtility instanceRespondsButDoesNotImplementSelector:selector class:class]) {
                 // iOS 7 does not implement these methods on NSURLSession. We actually want to
                 // swizzle __NSCFURLSession, which we can get from the class of the shared session
                 class = [[NSURLSession sharedSession] class];
@@ -479,7 +415,10 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
 
             NSURLSessionTask *(^asyncDataOrDownloadSwizzleBlock)(Class, id, NSURLSessionAsyncCompletion) = ^NSURLSessionTask *(Class slf, id argument, NSURLSessionAsyncCompletion completion) {
                 NSURLSessionTask *task = nil;
-                if ([FLEXNetworkObserver isEnabled]) {
+                // If completion block was not provided sender expect to receive delegated methods or does not
+                // interested in callback at all. In this case we should just call original method implementation
+                // with nil completion block.
+                if ([FLEXNetworkObserver isEnabled] && completion) {
                     NSString *requestID = [self nextRequestID];
                     NSString *mechanism = [self mechansimFromClassMethod:selector onClass:class];
                     NSURLSessionAsyncCompletion completionWrapper = [self asyncCompletionWrapperForRequestID:requestID mechanism:mechanism completion:completion];
@@ -491,7 +430,7 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
                 return task;
             };
             
-            [self replaceImplementationOfKnownSelector:selector onClass:class withBlock:asyncDataOrDownloadSwizzleBlock swizzledSelector:swizzledSelector];
+            [FLEXUtility replaceImplementationOfKnownSelector:selector onClass:class withBlock:asyncDataOrDownloadSwizzleBlock swizzledSelector:swizzledSelector];
         }
     });
 }
@@ -513,9 +452,9 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
 
         for (int selectorIndex = 0; selectorIndex < numSelectors; selectorIndex++) {
             SEL selector = selectors[selectorIndex];
-            SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+            SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
 
-            if ([self instanceRespondsButDoesNotImplementSelector:selector class:class]) {
+            if ([FLEXUtility instanceRespondsButDoesNotImplementSelector:selector class:class]) {
                 // iOS 7 does not implement these methods on NSURLSession. We actually want to
                 // swizzle __NSCFURLSession, which we can get from the class of the shared session
                 class = [[NSURLSession sharedSession] class];
@@ -535,7 +474,7 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
                 return task;
             };
             
-            [self replaceImplementationOfKnownSelector:selector onClass:class withBlock:asyncUploadTaskSwizzleBlock swizzledSelector:swizzledSelector];
+            [FLEXUtility replaceImplementationOfKnownSelector:selector onClass:class withBlock:asyncUploadTaskSwizzleBlock swizzledSelector:swizzledSelector];
         }
     });
 }
@@ -574,7 +513,7 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
 + (void)injectWillSendRequestIntoDelegateClass:(Class)cls
 {
     SEL selector = @selector(connection:willSendRequest:redirectResponse:);
-    SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+    SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
     
     Protocol *protocol = @protocol(NSURLConnectionDataDelegate);
     if (!protocol) {
@@ -600,13 +539,13 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
         return returnValue;
     };
     
-    [self replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
+    [FLEXUtility replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
 }
 
 + (void)injectDidReceiveResponseIntoDelegateClass:(Class)cls
 {
     SEL selector = @selector(connection:didReceiveResponse:);
-    SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+    SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
     
     Protocol *protocol = @protocol(NSURLConnectionDataDelegate);
     if (!protocol) {
@@ -629,13 +568,13 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
         }];
     };
     
-    [self replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
+    [FLEXUtility replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
 }
 
 + (void)injectDidReceiveDataIntoDelegateClass:(Class)cls
 {
     SEL selector = @selector(connection:didReceiveData:);
-    SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+    SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
     
     Protocol *protocol = @protocol(NSURLConnectionDataDelegate);
     if (!protocol) {
@@ -658,13 +597,13 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
         }];
     };
     
-    [self replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
+    [FLEXUtility replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
 }
 
 + (void)injectDidFinishLoadingIntoDelegateClass:(Class)cls
 {
     SEL selector = @selector(connectionDidFinishLoading:);
-    SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+    SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
     
     Protocol *protocol = @protocol(NSURLConnectionDataDelegate);
     if (!protocol) {
@@ -687,13 +626,13 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
         }];
     };
     
-    [self replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
+    [FLEXUtility replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
 }
 
 + (void)injectDidFailWithErrorIntoDelegateClass:(Class)cls
 {
     SEL selector = @selector(connection:didFailWithError:);
-    SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+    SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
     
     Protocol *protocol = @protocol(NSURLConnectionDelegate);
     struct objc_method_description methodDescription = protocol_getMethodDescription(protocol, selector, NO, YES);
@@ -712,13 +651,13 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
         }];
     };
     
-    [self replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
+    [FLEXUtility replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
 }
 
 + (void)injectTaskWillPerformHTTPRedirectionIntoDelegateClass:(Class)cls
 {
     SEL selector = @selector(URLSession:task:willPerformHTTPRedirection:newRequest:completionHandler:);
-    SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+    SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
 
     Protocol *protocol = @protocol(NSURLSessionTaskDelegate);
 
@@ -738,14 +677,14 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
         }];
     };
 
-    [self replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
+    [FLEXUtility replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
 
 }
 
 + (void)injectTaskDidReceiveDataIntoDelegateClass:(Class)cls
 {
     SEL selector = @selector(URLSession:dataTask:didReceiveData:);
-    SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+    SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
     
     Protocol *protocol = @protocol(NSURLSessionDataDelegate);
     
@@ -765,14 +704,14 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
         }];
     };
     
-    [self replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
+    [FLEXUtility replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
 
 }
 
 + (void)injectDataTaskDidBecomeDownloadTaskIntoDelegateClass:(Class)cls
 {
     SEL selector = @selector(URLSession:dataTask:didBecomeDownloadTask:);
-    SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+    SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
 
     Protocol *protocol = @protocol(NSURLSessionDataDelegate);
 
@@ -792,13 +731,13 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
         }];
     };
 
-    [self replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
+    [FLEXUtility replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
 }
 
 + (void)injectTaskDidReceiveResponseIntoDelegateClass:(Class)cls
 {
     SEL selector = @selector(URLSession:dataTask:didReceiveResponse:completionHandler:);
-    SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+    SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
     
     Protocol *protocol = @protocol(NSURLSessionDataDelegate);
     
@@ -818,14 +757,14 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
         }];
     };
     
-    [self replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
+    [FLEXUtility replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
 
 }
 
 + (void)injectTaskDidCompleteWithErrorIntoDelegateClass:(Class)cls
 {
     SEL selector = @selector(URLSession:task:didCompleteWithError:);
-    SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+    SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
     
     Protocol *protocol = @protocol(NSURLSessionTaskDelegate);
     struct objc_method_description methodDescription = protocol_getMethodDescription(protocol, selector, NO, YES);
@@ -844,21 +783,19 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
         }];
     };
 
-    [self replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
+    [FLEXUtility replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
 }
 
 // Used for overriding AFNetworking behavior
 + (void)injectRespondsToSelectorIntoDelegateClass:(Class)cls
 {
     SEL selector = @selector(respondsToSelector:);
-    SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+    SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
 
     //Protocol *protocol = @protocol(NSURLSessionTaskDelegate);
     Method method = class_getInstanceMethod(cls, selector);
     struct objc_method_description methodDescription = *method_getDescription(method);
 
-    typedef void (^NSURLSessionTaskDidCompleteWithErrorBlock)(id slf, SEL sel);
-
     BOOL (^undefinedBlock)(id <NSURLSessionTaskDelegate>, SEL) = ^(id slf, SEL sel) {
         return YES;
     };
@@ -870,14 +807,14 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
         return ((BOOL(*)(id, SEL, SEL))objc_msgSend)(slf, swizzledSelector, sel);
     };
 
-    [self replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
+    [FLEXUtility replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
 }
 
 
 + (void)injectDownloadTaskDidFinishDownloadingIntoDelegateClass:(Class)cls
 {
     SEL selector = @selector(URLSession:downloadTask:didFinishDownloadingToURL:);
-    SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+    SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
 
     Protocol *protocol = @protocol(NSURLSessionDownloadDelegate);
     struct objc_method_description methodDescription = protocol_getMethodDescription(protocol, selector, NO, YES);
@@ -897,13 +834,13 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
         }];
     };
 
-    [self replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
+    [FLEXUtility replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
 }
 
 + (void)injectDownloadTaskDidWriteDataIntoDelegateClass:(Class)cls
 {
     SEL selector = @selector(URLSession:downloadTask:didWriteData:totalBytesWritten:totalBytesExpectedToWrite:);
-    SEL swizzledSelector = [self swizzledSelectorForSelector:selector];
+    SEL swizzledSelector = [FLEXUtility swizzledSelectorForSelector:selector];
 
     Protocol *protocol = @protocol(NSURLSessionDownloadDelegate);
     struct objc_method_description methodDescription = protocol_getMethodDescription(protocol, selector, NO, YES);
@@ -922,7 +859,7 @@ didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask delegate:(id <NSU
         }];
     };
 
-    [self replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
+    [FLEXUtility replaceImplementationOfSelector:selector withSelector:swizzledSelector forClass:cls withMethodDescription:methodDescription implementationBlock:implementationBlock undefinedBlock:undefinedBlock];
 
 }
 
@@ -959,7 +896,7 @@ static char const * const kFLEXRequestIDKey = "kFLEXRequestIDKey";
 
 - (void)performBlock:(dispatch_block_t)block
 {
-    if (self.isEnabled) {
+    if ([[self class] isEnabled]) {
         dispatch_async(_queue, block);
     }
 }
@@ -1143,7 +1080,8 @@ static char const * const kFLEXRequestIDKey = "kFLEXRequestIDKey";
         FLEXInternalRequestState *requestState = [self requestStateForRequestID:requestID];
 
         if (!requestState.dataAccumulator) {
-            requestState.dataAccumulator = [[NSMutableData alloc] initWithCapacity:(NSUInteger)totalBytesExpectedToWrite];
+            NSUInteger unsignedBytesExpectedToWrite = totalBytesExpectedToWrite > 0 ? (NSUInteger)totalBytesExpectedToWrite : 0;
+            requestState.dataAccumulator = [[NSMutableData alloc] initWithCapacity:unsignedBytesExpectedToWrite];
             [[FLEXNetworkRecorder defaultRecorder] recordResponseReceivedWithRequestID:requestID response:downloadTask.response];
 
             NSString *requestMechanism = [NSString stringWithFormat:@"NSURLSessionDownloadTask (delegate: %@)", [delegate class]];

Classes/Utility/FLEXKeyboardHelpViewController.h

@@ -0,0 +1,13 @@
+//
+//  FLEXKeyboardHelpViewController.h
+//  UICatalog
+//
+//  Created by Ryan Olson on 9/19/15.
+//  Copyright © 2015 f. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@interface FLEXKeyboardHelpViewController : UIViewController
+
+@end

Classes/Utility/FLEXKeyboardHelpViewController.m

@@ -0,0 +1,44 @@
+//
+//  FLEXKeyboardHelpViewController.m
+//  UICatalog
+//
+//  Created by Ryan Olson on 9/19/15.
+//  Copyright © 2015 f. All rights reserved.
+//
+
+#import "FLEXKeyboardHelpViewController.h"
+#import "FLEXKeyboardShortcutManager.h"
+
+@interface FLEXKeyboardHelpViewController ()
+
+@property (nonatomic, strong) UITextView *textView;
+
+@end
+
+@implementation FLEXKeyboardHelpViewController
+
+- (void)viewDidLoad
+{
+    [super viewDidLoad];
+
+    self.textView = [[UITextView alloc] initWithFrame:self.view.bounds];
+    self.textView.autoresizingMask = UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight;
+    [self.view addSubview:self.textView];
+#if TARGET_OS_SIMULATOR
+    self.textView.text = [[FLEXKeyboardShortcutManager sharedManager] keyboardShortcutsDescription];
+#endif
+    self.textView.backgroundColor = [UIColor blackColor];
+    self.textView.textColor = [UIColor whiteColor];
+    self.textView.font = [UIFont boldSystemFontOfSize:14.0];
+    self.navigationController.navigationBar.barStyle = UIBarStyleBlackOpaque;
+    
+    self.title = @"Simulator Shortcuts";
+    self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(donePressed:)];
+}
+
+- (void)donePressed:(id)sender
+{
+    [self.presentingViewController dismissViewControllerAnimated:YES completion:nil];
+}
+
+@end

Classes/Utility/FLEXKeyboardShortcutManager.h

@@ -0,0 +1,24 @@
+//
+//  FLEXKeyboardShortcutManager.h
+//  FLEX
+//
+//  Created by Ryan Olson on 9/19/15.
+//  Copyright © 2015 Flipboard. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+#if TARGET_OS_SIMULATOR
+
+@interface FLEXKeyboardShortcutManager : NSObject
+
++ (instancetype)sharedManager;
+
+- (void)registerSimulatorShortcutWithKey:(NSString *)key modifiers:(UIKeyModifierFlags)modifiers action:(dispatch_block_t)action description:(NSString *)description;
+- (NSString *)keyboardShortcutsDescription;
+
+@property (nonatomic, assign, getter=isEnabled) BOOL enabled;
+
+@end
+
+#endif