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29d08545e2
- [ ] document picker - [ ] camera picker - [ ] image picker - [ ] restore "confirm to go back" behavior (interactive pop gesture?) // FREEBIE
142 lines
4.8 KiB
Objective-C
142 lines
4.8 KiB
Objective-C
//
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// Copyright (c) 2018 Open Whisper Systems. All rights reserved.
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//
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#import "OWSNavigationController.h"
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#import <SignalMessaging/SignalMessaging-Swift.h>
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NS_ASSUME_NONNULL_BEGIN
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@interface OWSNavigationController (OWSNavigationController) <UINavigationBarDelegate>
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@end
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#pragma mark -
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@interface OWSNavigationController () <UIGestureRecognizerDelegate>
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@end
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#pragma mark -
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@implementation OWSNavigationController
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- (instancetype)initWithRootViewController:(UIViewController *)rootViewController
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{
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// Attempt 1: negative additionalSafeArea
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// Failure: additionalSafeArea insets cannot be negative
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// UIEdgeInsets newSafeArea = UIEdgeInsetsMake(-50, 30, 20, 30);
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// rootViewController.additionalSafeAreaInsets = newSafeArea;
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// Attempt 2: safeAreaInsets on vc.view
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// failure. they're already 0
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// UIEdgeInsets existingInsets = rootViewController.view.safeAreaInsets;
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// Attempt 3: override topLayoutGuide?
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// Failure - not called.
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// overriding it does no good - it's not called by default layout code.
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// presumably it just existing if you want to use it as an anchor.
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// Attemp 4: sizeForChildContentConainer?
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// Failure - not called.
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// Attempt 5: autoSetDimension on navbar
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// Failure: no effect on rendered size
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// Attempt 6: manually set child frames in will/didLayoutSubviews
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// glitchy, and viewcontrollers re-layout themselves afterwards anyway
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// Attempt 7: Since we can't seem to *shrink* the navbar, maybe we can grow it.
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// make additionalSafeAreaInsets
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[self updateAdditionalSafeAreaInsets];
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self = [self initWithNavigationBarClass:[OWSNavigationBar class] toolbarClass:nil];
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[self pushViewController:rootViewController animated:NO];
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[[NSNotificationCenter defaultCenter] addObserver:self
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selector:@selector(windowManagerCallDidChange:)
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name:OWSWindowManagerCallDidChangeNotification
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object:nil];
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return self;
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}
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- (void)windowManagerCallDidChange:(NSNotification *)notification
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{
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DDLogDebug(@"%@ in %s", self.logTag, __PRETTY_FUNCTION__);
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[self updateAdditionalSafeAreaInsets];
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}
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- (void)updateAdditionalSafeAreaInsets
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{
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if (OWSWindowManager.sharedManager.hasCall) {
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self.additionalSafeAreaInsets = UIEdgeInsetsMake(64, 0, 0, 0);
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} else {
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self.additionalSafeAreaInsets = UIEdgeInsetsZero;
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}
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}
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- (void)viewDidLoad
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{
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[super viewDidLoad];
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// self.interactivePopGestureRecognizer.delegate = self;
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}
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#pragma mark - UINavigationBarDelegate
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// All OWSNavigationController serve as the UINavigationBarDelegate for their navbar.
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// We override shouldPopItem: in order to cancel some back button presses - for example,
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// if a view has unsaved changes.
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//- (BOOL)navigationBar:(UINavigationBar *)navigationBar shouldPopItem:(UINavigationItem *)item
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//{
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// OWSAssert(self.interactivePopGestureRecognizer.delegate == self);
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// UIViewController *topViewController = self.topViewController;
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//
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// // wasBackButtonClicked is YES if the back button was pressed but not
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// // if a back gesture was performed or if the view is popped programmatically.
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// BOOL wasBackButtonClicked = topViewController.navigationItem == item;
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// BOOL result = YES;
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// if (wasBackButtonClicked) {
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// if ([topViewController conformsToProtocol:@protocol(OWSNavigationView)]) {
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// id<OWSNavigationView> navigationView = (id<OWSNavigationView>)topViewController;
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// result = ![navigationView shouldCancelNavigationBack];
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// }
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// }
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//
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// // If we're not going to cancel the pop/back, we need to call the super
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// // implementation since it has important side effects.
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// if (result) {
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// // NOTE: result might end up NO if the super implementation cancels the
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// // the pop/back.
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//
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// // MJK WTF?? This seems super broken. It won't compile now, but how could it ever
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// // have? This is a delegate method, so how are we calling it on super?
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// // [super navigationBar:navigationBar shouldPopItem:item];
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// result = YES;
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// }
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// return result;
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//}
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#pragma mark - UIGestureRecognizerDelegate
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// We serve as the UIGestureRecognizerDelegate of the interactivePopGestureRecognizer
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// in order to cancel some "back" gestures - for example,
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// if a view has unsaved changes.
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//- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer
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//{
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// UIViewController *topViewController = self.topViewController;
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// if ([topViewController conformsToProtocol:@protocol(OWSNavigationView)]) {
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// id<OWSNavigationView> navigationView = (id<OWSNavigationView>)topViewController;
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// return ![navigationView shouldCancelNavigationBack];
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// } else {
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// return YES;
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// }
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//}
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@end
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NS_ASSUME_NONNULL_END
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