76 lines
3.3 KiB
Objective-C
76 lines
3.3 KiB
Objective-C
/**
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* Copyright Maarten Billemont (http://www.lhunath.com, lhunath@lyndir.com)
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*
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* See the enclosed file LICENSE for license information (LGPLv3). If you did
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* not receive this file, see http://www.gnu.org/licenses/lgpl-3.0.txt
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*
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* @author Maarten Billemont <lhunath@lyndir.com>
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* @license http://www.gnu.org/licenses/lgpl-3.0.txt
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*/
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//
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// MPPopdownSegue.h
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// MPPopdownSegue
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//
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// Created by lhunath on 2014-04-17.
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// Copyright, lhunath (Maarten Billemont) 2014. All rights reserved.
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//
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#import "MPPopdownSegue.h"
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#import "MPPasswordsViewController.h"
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@implementation MPPopdownSegue {
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}
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static char UnwindingObserverKey;
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- (void)perform {
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MPPasswordsViewController *passwordsVC;
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UIViewController *popdownVC;
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if ([self.sourceViewController isKindOfClass:[MPPasswordsViewController class]]) {
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passwordsVC = self.sourceViewController;
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popdownVC = self.destinationViewController;
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UIView *popdownView = popdownVC.view;
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popdownView.translatesAutoresizingMaskIntoConstraints = NO;
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[passwordsVC addChildViewController:popdownVC];
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[passwordsVC.popdownContainer addSubview:popdownView];
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[passwordsVC.popdownContainer addConstraintsWithVisualFormats:@[ @"H:|[popdownView]|", @"V:|[popdownView]|" ] options:0
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metrics:nil views:NSDictionaryOfVariableBindings( popdownView )];
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[UIView animateWithDuration:0.3f animations:^{
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[[passwordsVC.popdownToTopConstraint updatePriority:1] layoutIfNeeded];
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} completion:^(BOOL finished) {
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[popdownVC didMoveToParentViewController:passwordsVC];
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id<NSObject> observer = [[NSNotificationCenter defaultCenter] addObserverForName:MPSignedOutNotification object:nil
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queue:[NSOperationQueue mainQueue] usingBlock:
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^(NSNotification *note) {
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[[[MPPopdownSegue alloc] initWithIdentifier:@"unwind-popdown" source:popdownVC
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destination:passwordsVC] perform];
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}];
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objc_setAssociatedObject( popdownVC, &UnwindingObserverKey, observer, OBJC_ASSOCIATION_RETAIN );
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}];
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}
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else {
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popdownVC = self.sourceViewController;
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for (passwordsVC = self.sourceViewController; passwordsVC && ![(id)passwordsVC isKindOfClass:[MPPasswordsViewController class]];
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passwordsVC = (id)passwordsVC.parentViewController);
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NSAssert( passwordsVC, @"Couldn't find passwords VC to pop back to." );
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[[NSNotificationCenter defaultCenter] removeObserver:objc_getAssociatedObject( popdownVC, &UnwindingObserverKey )];
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objc_setAssociatedObject( popdownVC, &UnwindingObserverKey, nil, OBJC_ASSOCIATION_RETAIN );
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[popdownVC willMoveToParentViewController:nil];
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[UIView animateWithDuration:0.3f delay:0 options:UIViewAnimationOptionOverrideInheritedDuration animations:^{
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[[passwordsVC.popdownToTopConstraint updatePriority:UILayoutPriorityDefaultHigh] layoutIfNeeded];
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} completion:^(BOOL finished) {
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[popdownVC.view removeFromSuperview];
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[popdownVC removeFromParentViewController];
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}];
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}
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}
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@end
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