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MasterPassword/platform-darwin/Source/iOS/MPPopdownSegue.m

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2017-04-05 20:56:22 +00:00
//==============================================================================
// This file is part of Master Password.
// Copyright (c) 2011-2017, Maarten Billemont.
//
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// Master Password is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
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// Master Password is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
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// You can find a copy of the GNU General Public License in the
// LICENSE file. Alternatively, see <http://www.gnu.org/licenses/>.
//==============================================================================
#import "MPPopdownSegue.h"
#import "MPPasswordsViewController.h"
@implementation MPPopdownSegue {
}
static char UnwindingObserverKey;
- (void)perform {
MPPasswordsViewController *passwordsVC;
UIViewController *popdownVC;
if ([self.sourceViewController isKindOfClass:[MPPasswordsViewController class]]) {
passwordsVC = self.sourceViewController;
popdownVC = self.destinationViewController;
UIView *popdownView = popdownVC.view;
popdownView.translatesAutoresizingMaskIntoConstraints = NO;
[passwordsVC addChildViewController:popdownVC];
[passwordsVC.popdownContainer addSubview:popdownView];
[passwordsVC.popdownContainer addConstraintsWithVisualFormats:@[ @"H:|[popdownView]|", @"V:|[popdownView]|" ] options:0
metrics:nil views:NSDictionaryOfVariableBindings( popdownView )];
[UIView animateWithDuration:0.3f animations:^{
[[passwordsVC.popdownToTopConstraint updatePriority:1] layoutIfNeeded];
} completion:^(BOOL finished) {
[popdownVC didMoveToParentViewController:passwordsVC];
id<NSObject> observer = [[NSNotificationCenter defaultCenter] addObserverForName:MPSignedOutNotification object:nil
queue:[NSOperationQueue mainQueue] usingBlock:
^(NSNotification *note) {
[[[MPPopdownSegue alloc] initWithIdentifier:@"unwind-popdown" source:popdownVC
destination:passwordsVC] perform];
}];
objc_setAssociatedObject( popdownVC, &UnwindingObserverKey, observer, OBJC_ASSOCIATION_RETAIN );
}];
}
else {
popdownVC = self.sourceViewController;
for (passwordsVC = self.sourceViewController; passwordsVC && ![(id)passwordsVC isKindOfClass:[MPPasswordsViewController class]];
passwordsVC = (id)passwordsVC.parentViewController);
NSAssert( passwordsVC, @"Couldn't find passwords VC to pop back to." );
[[NSNotificationCenter defaultCenter] removeObserver:objc_getAssociatedObject( popdownVC, &UnwindingObserverKey )];
objc_setAssociatedObject( popdownVC, &UnwindingObserverKey, nil, OBJC_ASSOCIATION_RETAIN );
[popdownVC willMoveToParentViewController:nil];
[UIView animateWithDuration:0.3f delay:0 options:UIViewAnimationOptionOverrideInheritedDuration animations:^{
[[passwordsVC.popdownToTopConstraint updatePriority:UILayoutPriorityDefaultHigh] layoutIfNeeded];
} completion:^(BOOL finished) {
[popdownVC.view removeFromSuperview];
[popdownVC removeFromParentViewController];
}];
}
}
@end