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Merge pull request github#136 from maxgoedjen/feature-tuinavigationco…
…ntroller Adding TUINavigationController
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,27 @@ | ||
| // | ||
| // TUINavigationController.h | ||
| // TwUI | ||
| // | ||
| // Created by Max Goedjen on 11/12/12. | ||
| // | ||
| // | ||
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| #import <Foundation/Foundation.h> | ||
| #import "TUIViewController.h" | ||
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| @interface TUINavigationController : TUIViewController | ||
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| @property (nonatomic, readonly) TUIViewController *topViewController; | ||
| @property (nonatomic, readonly) NSArray *viewControllers; | ||
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| - (id)initWithRootViewController:(TUIViewController *)viewController; | ||
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| - (void)setViewControllers:(NSArray *)viewControllers animated:(BOOL)animated; | ||
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| - (void)pushViewController:(TUIViewController *)viewController animated:(BOOL)animated; | ||
| - (TUIViewController *)popViewControlerAnimated:(BOOL)animated; | ||
| - (NSArray *)popToRootViewControllerAnimated:(BOOL)animated; | ||
| - (NSArray *)popToViewController:(TUIViewController *)viewController animated:(BOOL)animated; | ||
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| @end |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,179 @@ | ||
| // | ||
| // TUINavigationController.m | ||
| // TwUI | ||
| // | ||
| // Created by Max Goedjen on 11/12/12. | ||
| // | ||
| // | ||
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| #import "TUINavigationController.h" | ||
| #import "TUIView.h" | ||
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| @interface TUINavigationController () | ||
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| @property (nonatomic) NSMutableArray *stack; | ||
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| @end | ||
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| static CGFloat const TUINavigationControllerAnimationDuration = 0.5f; | ||
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| @implementation TUINavigationController | ||
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| - (id)initWithRootViewController:(TUIViewController *)viewController { | ||
| self = [super init]; | ||
| if (self) { | ||
| _stack = [@[] mutableCopy]; | ||
| [_stack addObject:viewController]; | ||
| self.view.clipsToBounds = YES; | ||
| } | ||
| return self; | ||
| } | ||
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| - (void)loadView { | ||
| self.view = [[TUIView alloc] initWithFrame:CGRectZero]; | ||
| self.view.backgroundColor = [NSColor lightGrayColor]; | ||
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| TUIViewController *visible = [self topViewController]; | ||
| [visible viewWillAppear:NO]; | ||
| [self.view addSubview:visible.view]; | ||
| visible.view.frame = self.view.bounds; | ||
| visible.view.autoresizingMask = TUIViewAutoresizingFlexibleSize; | ||
| [visible viewDidAppear:YES]; | ||
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| } | ||
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| #pragma mark - Properties | ||
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| - (NSArray *)viewControllers { | ||
| return [NSArray arrayWithArray:_stack]; | ||
| } | ||
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| - (TUIViewController *)topViewController { | ||
| return [_stack lastObject]; | ||
| } | ||
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| #pragma mark - Methods | ||
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| - (void)setViewControllers:(NSArray *)viewControllers animated:(BOOL)animated { | ||
| CGFloat duration = animated ? TUINavigationControllerAnimationDuration : 0; | ||
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| TUIViewController *viewController = [viewControllers lastObject]; | ||
| BOOL containedAlready = ([_stack containsObject:viewController]); | ||
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| [CATransaction begin]; | ||
| //Push if it's not in the stack, pop back if it is | ||
| [self.view addSubview:viewController.view]; | ||
| viewController.view.frame = containedAlready ? TUINavigationOffscreenLeftFrame(self.view.bounds) : TUINavigationOffscreenRightFrame(self.view.bounds); | ||
| [CATransaction flush]; | ||
| [CATransaction commit]; | ||
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| TUIViewController *last = [self topViewController]; | ||
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| [_stack removeAllObjects]; | ||
| [_stack addObjectsFromArray:viewControllers]; | ||
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| [TUIView animateWithDuration:duration animations:^{ | ||
| last.view.frame = containedAlready ? TUINavigationOffscreenRightFrame(self.view.bounds) : TUINavigationOffscreenLeftFrame(self.view.bounds); | ||
| viewController.view.frame = self.view.bounds; | ||
| } completion:^(BOOL finished) { | ||
| [last.view removeFromSuperview]; | ||
| [viewController viewDidAppear:animated]; | ||
| [last viewDidDisappear:animated]; | ||
| }]; | ||
| } | ||
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| - (void)pushViewController:(TUIViewController *)viewController animated:(BOOL)animated { | ||
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| TUIViewController *last = [self topViewController]; | ||
| [_stack addObject:viewController]; | ||
| CGFloat duration = animated ? TUINavigationControllerAnimationDuration : 0; | ||
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| [last viewWillDisappear:animated]; | ||
| [viewController viewWillAppear:animated]; | ||
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| [self.view addSubview:viewController.view]; | ||
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| //Make sure the app draws the frame offscreen instead of just 'popping' it in | ||
| [CATransaction begin]; | ||
| viewController.view.frame = TUINavigationOffscreenRightFrame(self.view.bounds); | ||
| [CATransaction flush]; | ||
| [CATransaction commit]; | ||
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| [TUIView animateWithDuration:duration animations:^{ | ||
| last.view.frame = TUINavigationOffscreenLeftFrame(self.view.bounds); | ||
| viewController.view.frame = self.view.bounds; | ||
| } completion:^(BOOL finished) { | ||
| [last.view removeFromSuperview]; | ||
| [viewController viewDidAppear:animated]; | ||
| [last viewDidDisappear:animated]; | ||
| }]; | ||
| } | ||
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| - (TUIViewController *)popViewControlerAnimated:(BOOL)animated { | ||
| if ([_stack count] <= 1) { | ||
| NSLog(@"Not enough view controllers on stack to pop"); | ||
| return nil; | ||
| } | ||
| TUIViewController *popped = [_stack lastObject]; | ||
| [self popToViewController:[_stack objectAtIndex:([_stack count] - 2)] animated:animated]; | ||
| return popped; | ||
| } | ||
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| - (NSArray *)popToRootViewControllerAnimated:(BOOL)animated { | ||
| if ([[self topViewController] isEqual:[_stack objectAtIndex:0]] == YES) { | ||
| return @[]; | ||
| } | ||
| return [self popToViewController:[_stack objectAtIndex:0] animated:animated]; | ||
| } | ||
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| - (NSArray *)popToViewController:(TUIViewController *)viewController animated:(BOOL)animated { | ||
| if ([_stack containsObject:viewController] == NO) { | ||
| NSLog(@"View controller %@ is not in stack", viewController); | ||
| return @[]; | ||
| } | ||
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| TUIViewController *last = [_stack lastObject]; | ||
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| NSMutableArray *popped = [@[] mutableCopy]; | ||
| while ([viewController isEqual:[_stack lastObject]] == NO) { | ||
| [popped addObject:[_stack lastObject]]; | ||
| [_stack removeLastObject]; | ||
| } | ||
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| [self.view addSubview:viewController.view]; | ||
| viewController.view.frame = TUINavigationOffscreenLeftFrame(self.view.bounds); | ||
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| CGFloat duration = animated ? TUINavigationControllerAnimationDuration : 0; | ||
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| [last viewWillDisappear:animated]; | ||
| [viewController viewWillAppear:animated]; | ||
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| [TUIView animateWithDuration:duration animations:^{ | ||
| last.view.frame = TUINavigationOffscreenRightFrame(self.view.bounds); | ||
| viewController.view.frame = self.view.bounds; | ||
| } completion:^(BOOL finished) { | ||
| [last.view removeFromSuperview]; | ||
| [viewController viewDidAppear:animated]; | ||
| [last viewDidDisappear:animated]; | ||
| }]; | ||
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| return popped; | ||
| } | ||
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| #pragma mark - Private | ||
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| static inline CGRect TUINavigationOffscreenLeftFrame(CGRect bounds) { | ||
| CGRect offscreenLeft = bounds; | ||
| offscreenLeft.origin.x -= bounds.size.width; | ||
| return offscreenLeft; | ||
| } | ||
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| static inline CGRect TUINavigationOffscreenRightFrame(CGRect bounds) { | ||
| CGRect offscreenRight = bounds; | ||
| offscreenRight.origin.x += bounds.size.width; | ||
| return offscreenRight; | ||
| } | ||
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| @end |