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FSQSplitViewController
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| // | |
| // FSQSplitViewController.h | |
| // | |
| // Copyright (c) 2015 Foursquare. All rights reserved. | |
| // | |
| #import "FSCoreViewController.h" | |
| NS_ASSUME_NONNULL_BEGIN; | |
| @class FSQSplitViewController; | |
| typedef NS_ENUM(NSUInteger, FSQSplitViewDisplayMode) { | |
| FSQSplitViewDisplayModePrimary = 0, | |
| FSQSplitViewDisplayModeSecondary, | |
| }; | |
| @protocol FSQSplitViewChildControllerDelegate <NSObject> | |
| @optional | |
| - (void) splitViewController:(FSQSplitViewController *)splitViewController | |
| willShowSecondaryViewController:(UIViewController<FSQSplitViewChildControllerDelegate> *)secondaryViewController; | |
| - (void) splitViewController:(FSQSplitViewController *)splitViewController | |
| didShowSecondaryViewController:(UIViewController<FSQSplitViewChildControllerDelegate> *)secondaryViewController; | |
| - (void) splitViewController:(FSQSplitViewController *)splitViewController | |
| willHideSecondaryViewController:(UIViewController<FSQSplitViewChildControllerDelegate> *)secondaryViewController; | |
| - (void) splitViewController:(FSQSplitViewController *)splitViewController | |
| didHideSecondaryViewController:(UIViewController<FSQSplitViewChildControllerDelegate> *)secondaryViewController; | |
| // These delegate methods only get called when views are side-by-side so that the views don't have side effects | |
| // on each other while off screen. | |
| - (void)siblingViewController:(UIViewController *)siblingViewController | |
| didSelectItemAtIndex:(NSInteger)index | |
| userInfo:(nullable NSDictionary *)userInfo; | |
| - (void)siblingViewController:(UIViewController *)siblingViewController | |
| didDeselectItemAtIndex:(NSInteger)index | |
| userInfo:(nullable NSDictionary *)userInfo; | |
| @end | |
| @interface FSQSplitViewController : FSCoreViewController | |
| @property (nonatomic, readonly) UIViewController<FSQSplitViewChildControllerDelegate> *primaryViewController; | |
| @property (nonatomic, readonly) UIViewController<FSQSplitViewChildControllerDelegate> *secondaryViewController; | |
| @property (nonatomic, readonly) FSQSplitViewDisplayMode displayMode; | |
| @property (nonatomic) BOOL dismissSecondaryViewControllerOnBackButtonPress; // default = YES | |
| - (instancetype)initWithPrimaryViewController:(UIViewController<FSQSplitViewChildControllerDelegate> *)primaryViewController | |
| secondaryViewController:(UIViewController<FSQSplitViewChildControllerDelegate> *)secondaryViewController; | |
| - (void)childViewController:(UIViewController *)childViewController | |
| didSelectItemAtIndex:(NSInteger)index | |
| userInfo:(nullable NSDictionary *)userInfo; | |
| - (void)childViewController:(UIViewController *)childViewController | |
| didDeselectItemAtIndex:(NSInteger)index | |
| userInfo:(nullable NSDictionary *)userInfo; | |
| - (void)setDisplayMode:(FSQSplitViewDisplayMode)displayMode animated:(BOOL)animated; | |
| - (void)showSecondaryViewControllerAnimated:(BOOL)animated withAdditionalAnimations:(nullable void (^)())animations completionBlock:(nullable void (^)())completion; | |
| - (void)hideSecondaryViewControllerAnimated:(BOOL)animated withAdditionalAnimations:(nullable void (^)())animations completionBlock:(nullable void (^)())completion; | |
| @end | |
| NS_ASSUME_NONNULL_END; |
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| // | |
| // FSQSplitViewController.m | |
| // | |
| // Copyright (c) 2015 Foursquare. All rights reserved. | |
| // | |
| #import "FSQSplitViewController.h" | |
| static const CGFloat kPrimaryWidthPercentage = 0.4; | |
| static const CGFloat kSplitViewAnimationDuration = 0.4; | |
| static const CGFloat kSplitViewAnimationDampingRatio = 1.0; | |
| @interface FSQSplitViewController () | |
| @property (nonatomic) UIView *verticalSeparator; | |
| @property (nonatomic) BOOL isAnimating; | |
| @end | |
| @implementation FSQSplitViewController | |
| - (instancetype)initWithPrimaryViewController:(UIViewController<FSQSplitViewChildControllerDelegate> *)primaryViewController | |
| secondaryViewController:(UIViewController<FSQSplitViewChildControllerDelegate> *)secondaryViewController { | |
| self = [super init]; | |
| if (self) { | |
| _primaryViewController = primaryViewController; | |
| _secondaryViewController = secondaryViewController; | |
| _dismissSecondaryViewControllerOnBackButtonPress = YES; | |
| } | |
| return self; | |
| } | |
| - (void)viewDidLoad { | |
| [super viewDidLoad]; | |
| [self addChildViewController:self.primaryViewController]; | |
| [self addChildViewController:self.secondaryViewController]; | |
| [self.view addSubview:self.primaryViewController.view]; | |
| [self.view addSubview:self.secondaryViewController.view]; | |
| [self.primaryViewController didMoveToParentViewController:self]; | |
| [self.secondaryViewController didMoveToParentViewController:self]; | |
| self.verticalSeparator = [UIView lineVerticalWithTop:0.0 | |
| bottom:self.view.height | |
| left:0.0 | |
| color:[UIColor fsCellSeparatorColor]]; | |
| [self.view addSubview:self.verticalSeparator]; | |
| } | |
| - (void)viewDidLayoutSubviews { | |
| [super viewDidLayoutSubviews]; | |
| [self setupViewsWithSize:self.view.size traitCollection:self.traitCollection]; | |
| } | |
| - (void)willTransitionToTraitCollection:(UITraitCollection *)newCollection withTransitionCoordinator:(id<UIViewControllerTransitionCoordinator>)coordinator { | |
| [super willTransitionToTraitCollection:newCollection withTransitionCoordinator:coordinator]; | |
| _displayMode = FSQSplitViewDisplayModePrimary; | |
| } | |
| - (void)setDisplayMode:(FSQSplitViewDisplayMode)displayMode animated:(BOOL)animated { | |
| if (_displayMode != displayMode) { | |
| _displayMode = displayMode; | |
| switch (displayMode) { | |
| case FSQSplitViewDisplayModePrimary: | |
| [self hideSecondaryViewControllerAnimated:animated withAdditionalAnimations:nil completionBlock:nil]; | |
| break; | |
| case FSQSplitViewDisplayModeSecondary: | |
| [self showSecondaryViewControllerAnimated:NO withAdditionalAnimations:nil completionBlock:nil]; | |
| break; | |
| } | |
| } | |
| } | |
| - (CGSize)sizeForChildContentContainer:(id<UIContentContainer>)container withParentContainerSize:(CGSize)parentSize { | |
| if (container == self.primaryViewController) { | |
| return [self frameForPrimaryViewControllerWithParentSize:parentSize traitCollection:self.traitCollection].size; | |
| } | |
| else if (container == self.secondaryViewController) { | |
| return [self frameForSecondaryViewControllerWithParentSize:parentSize traitCollection:self.traitCollection].size; | |
| } | |
| else { | |
| NSAssert(NO, @"Invalid child view controller: %@", container); | |
| return CGSizeZero; | |
| } | |
| } | |
| - (void)setupViewsWithSize:(CGSize)size traitCollection:(UITraitCollection *)traitCollection { | |
| if (!self.isAnimating) { | |
| self.primaryViewController.view.frame = [self frameForPrimaryViewControllerWithParentSize:size traitCollection:traitCollection]; | |
| self.secondaryViewController.view.frame = [self frameForSecondaryViewControllerWithParentSize:size traitCollection:traitCollection]; | |
| self.secondaryViewController.view.hidden = (traitCollection.horizontalSizeClass == UIUserInterfaceSizeClassCompact && self.displayMode == FSQSplitViewDisplayModePrimary); | |
| self.verticalSeparator.hidden = (traitCollection.horizontalSizeClass == UIUserInterfaceSizeClassCompact); | |
| self.verticalSeparator.left = self.primaryViewController.view.right; | |
| } | |
| } | |
| - (void)childViewController:(UIViewController *)childViewController didSelectItemAtIndex:(NSInteger)index userInfo:(NSDictionary *)userInfo { | |
| NSParameterAssert(childViewController == self.primaryViewController || childViewController == self.secondaryViewController); | |
| if (self.view.traitCollection.horizontalSizeClass == UIUserInterfaceSizeClassCompact) { | |
| return; | |
| } | |
| if (self.primaryViewController != childViewController && [self.primaryViewController respondsToSelector:@selector(siblingViewController:didSelectItemAtIndex:userInfo:)]) { | |
| [self.primaryViewController siblingViewController:childViewController didSelectItemAtIndex:index userInfo:userInfo]; | |
| } | |
| if (self.secondaryViewController != childViewController && [self.secondaryViewController respondsToSelector:@selector(siblingViewController:didSelectItemAtIndex:userInfo:)]) { | |
| [self.secondaryViewController siblingViewController:childViewController didSelectItemAtIndex:index userInfo:userInfo]; | |
| } | |
| } | |
| - (void)childViewController:(UIViewController *)childViewController didDeselectItemAtIndex:(NSInteger)index userInfo:(NSDictionary *)userInfo { | |
| NSParameterAssert(childViewController == self.primaryViewController || childViewController == self.secondaryViewController); | |
| if (self.view.traitCollection.horizontalSizeClass == UIUserInterfaceSizeClassCompact) { | |
| return; | |
| } | |
| if (self.primaryViewController != childViewController && [self.primaryViewController respondsToSelector:@selector(siblingViewController:didSelectItemAtIndex:userInfo:)]) { | |
| [self.primaryViewController siblingViewController:childViewController didDeselectItemAtIndex:index userInfo:userInfo]; | |
| } | |
| if (self.secondaryViewController != childViewController && [self.secondaryViewController respondsToSelector:@selector(siblingViewController:didSelectItemAtIndex:userInfo:)]) { | |
| [self.secondaryViewController siblingViewController:childViewController didDeselectItemAtIndex:index userInfo:userInfo]; | |
| } | |
| } | |
| - (void)showSecondaryViewControllerAnimated:(BOOL)animated withAdditionalAnimations:(void (^)())animations completionBlock:(void (^)())completion { | |
| if (self.traitCollection.horizontalSizeClass == UIUserInterfaceSizeClassCompact) { | |
| for (UIViewController<FSQSplitViewChildControllerDelegate> *childViewController in @[self.primaryViewController, self.secondaryViewController]) { | |
| if ([childViewController respondsToSelector:@selector(splitViewController:willShowSecondaryViewController:)]) { | |
| [childViewController splitViewController:self willShowSecondaryViewController:self.secondaryViewController]; | |
| } | |
| } | |
| _displayMode = FSQSplitViewDisplayModeSecondary; | |
| self.isAnimating = YES; | |
| self.secondaryViewController.view.frame = self.view.bounds; | |
| self.secondaryViewController.view.bottom = 0.0; | |
| self.secondaryViewController.view.hidden = NO; | |
| [UIView animateWithDuration:animated ? kSplitViewAnimationDuration : 0.0 | |
| delay:0.0 | |
| usingSpringWithDamping:kSplitViewAnimationDampingRatio | |
| initialSpringVelocity:0.0 | |
| options:0 | |
| animations:^{ | |
| self.secondaryViewController.view.top = 0.f; | |
| if (animations) { | |
| animations(); | |
| } | |
| } | |
| completion:^(BOOL finished) { | |
| self.isAnimating = NO; | |
| if (completion) { | |
| completion(); | |
| } | |
| }]; | |
| for (UIViewController<FSQSplitViewChildControllerDelegate> *childViewController in @[self.primaryViewController, self.secondaryViewController]) { | |
| if ([childViewController respondsToSelector:@selector(splitViewController:didShowSecondaryViewController:)]) { | |
| [childViewController splitViewController:self didShowSecondaryViewController:self.secondaryViewController]; | |
| } | |
| } | |
| } | |
| } | |
| - (void)hideSecondaryViewControllerAnimated:(BOOL)animated withAdditionalAnimations:(void (^)())animations completionBlock:(void (^)())completion { | |
| if (self.traitCollection.horizontalSizeClass == UIUserInterfaceSizeClassCompact) { | |
| for (UIViewController<FSQSplitViewChildControllerDelegate> *childViewController in @[self.primaryViewController, self.secondaryViewController]) { | |
| if ([childViewController respondsToSelector:@selector(splitViewController:willHideSecondaryViewController:)]) { | |
| [childViewController splitViewController:self willHideSecondaryViewController:self.secondaryViewController]; | |
| } | |
| } | |
| _displayMode = FSQSplitViewDisplayModePrimary; | |
| self.isAnimating = YES; | |
| [UIView animateWithDuration:animated ? kSplitViewAnimationDuration : 0.0 | |
| delay:0.0 | |
| usingSpringWithDamping:kSplitViewAnimationDampingRatio | |
| initialSpringVelocity:0.0 | |
| options:0 | |
| animations:^{ | |
| self.secondaryViewController.view.bottom = 0.f; | |
| if (animations) { | |
| animations(); | |
| } | |
| } | |
| completion:^(BOOL finished) { | |
| self.isAnimating = NO; | |
| self.secondaryViewController.view.hidden = YES; | |
| if (completion) { | |
| completion(); | |
| } | |
| }]; | |
| for (UIViewController<FSQSplitViewChildControllerDelegate> *childViewController in @[self.primaryViewController, self.secondaryViewController]) { | |
| if ([childViewController respondsToSelector:@selector(splitViewController:didHideSecondaryViewController:)]) { | |
| [childViewController splitViewController:self didHideSecondaryViewController:self.secondaryViewController]; | |
| } | |
| } | |
| } | |
| } | |
| - (void)backButtonSelected:(id)sender { | |
| if (self.displayMode == FSQSplitViewDisplayModeSecondary && self.dismissSecondaryViewControllerOnBackButtonPress) { | |
| [self hideSecondaryViewControllerAnimated:YES withAdditionalAnimations:nil completionBlock:nil]; | |
| } | |
| else { | |
| [super backButtonSelected:sender]; | |
| } | |
| } | |
| #pragma mark - Helpers | |
| - (CGRect)frameForPrimaryViewControllerWithParentSize:(CGSize)size traitCollection:(UITraitCollection *)traitCollection { | |
| if (traitCollection.horizontalSizeClass == UIUserInterfaceSizeClassRegular) { | |
| return CGRectMake(0.0, 0.0, size.width * kPrimaryWidthPercentage, size.height); | |
| } | |
| else { | |
| return CGRectMake(0.0, 0.0, size.width, size.height); | |
| } | |
| } | |
| - (CGRect)frameForSecondaryViewControllerWithParentSize:(CGSize)size traitCollection:(UITraitCollection *)traitCollection { | |
| if (traitCollection.horizontalSizeClass == UIUserInterfaceSizeClassRegular) { | |
| return CGRectMake(size.width * kPrimaryWidthPercentage, 0.0, size.width * (1 - kPrimaryWidthPercentage), size.height); | |
| } | |
| else { | |
| return CGRectMake(0.0, 0.0, size.width, size.height); | |
| } | |
| } | |
| @end |
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