space-ios/Libraries external/CTAssetsPickerController/CTAssetsNavigationController.m

/*
 
 MIT License (MIT)
 
 Copyright (c) 2015 bawn
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:
 
 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.
 
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 
 */

#import "CTAssetsNavigationController.h"



@interface CTAssetsNavigationController ()<UIGestureRecognizerDelegate, UINavigationControllerDelegate>

@end

@implementation CTAssetsNavigationController

- (void)viewDidLoad
{
    [super viewDidLoad];
    __weak CTAssetsNavigationController<UIGestureRecognizerDelegate> *weakSelf = self;
    
    if ([self respondsToSelector:@selector(interactivePopGestureRecognizer)])
    {
        self.interactivePopGestureRecognizer.delegate = weakSelf;
        
        self.delegate = weakSelf;
    }
    
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated
{
    
    if ( [self respondsToSelector:@selector(interactivePopGestureRecognizer)] && animated == YES )
    {
        self.interactivePopGestureRecognizer.enabled = NO;
    }
    
    [super pushViewController:viewController animated:animated];
    
}

- (NSArray *)popToRootViewControllerAnimated:(BOOL)animated
{
    if ( [self respondsToSelector:@selector(interactivePopGestureRecognizer)] && animated == YES )
    {
        self.interactivePopGestureRecognizer.enabled = NO;
    }
    
    return  [super popToRootViewControllerAnimated:animated];
    
}

- (NSArray *)popToViewController:(UIViewController *)viewController animated:(BOOL)animated
{
    if( [self respondsToSelector:@selector(interactivePopGestureRecognizer)] )
    {
        self.interactivePopGestureRecognizer.enabled = NO;
    }
    
    return [super popToViewController:viewController animated:animated];
    
}

#pragma mark UINavigationControllerDelegate

- (void)navigationController:(UINavigationController *)navigationController
       didShowViewController:(UIViewController *)viewController
                    animated:(BOOL)animate
{
    if ([self respondsToSelector:@selector(interactivePopGestureRecognizer)])
    {
        self.interactivePopGestureRecognizer.enabled = YES;
    }
}


- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer
{
    
    if ( gestureRecognizer == self.interactivePopGestureRecognizer )
    {
        if ( self.viewControllers.count < 2 || self.visibleViewController == self.viewControllers[0] )
        {
            return NO;
        }
    }
    
    return YES;
}


@end