Embedded View Controllers Segue

KFEmbeddedContainerSegue.h

//
//  KFEmbeddedContainerSegue.h
//
//  Created by Rico Becker on 18.07.13.
//  Copyright (c) 2013 KF Interactive. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface KFEmbeddedContainerSegue : UIStoryboardSegue


@property (nonatomic) BOOL animate;


@end

KFEmbeddedContainerSegue.m

//
//  KFEmbeddedContainerSegue.m
//
//  Created by Rico Becker on 18.07.13.
//  Copyright (c) 2013 KF Interactive. All rights reserved.
//

#import "KFEmbeddedContainerSegue.h"

@implementation KFEmbeddedContainerSegue


- (void)perform
{
    UIViewController *sourceViewController = (UIViewController *) self.sourceViewController;
    UIViewController *destinationViewController = (UIViewController *) self.destinationViewController;
    
    destinationViewController.view.center = sourceViewController.view.center;
    destinationViewController.view.transform = sourceViewController.view.transform;
    destinationViewController.view.bounds = sourceViewController.view.bounds;
    
    
    UIViewController *parentViewController = [sourceViewController parentViewController];
    UIView *containerView = [sourceViewController.view superview];

    
    if (self.animate)
    {
        [parentViewController addChildViewController:destinationViewController];
        [destinationViewController willMoveToParentViewController:parentViewController];
        destinationViewController.view.alpha = .0f;
        [containerView addSubview:destinationViewController.view];
        [destinationViewController didMoveToParentViewController:parentViewController];
        
        [UIView animateWithDuration:1.0f animations:^
        {
            destinationViewController.view.alpha = 1.0f;
            sourceViewController.view.alpha = .0f;
        }
        completion:^(BOOL finished)
        {
            if (finished)
            {
                [sourceViewController.view removeFromSuperview];
                [sourceViewController removeFromParentViewController];
            }
        }];
    }
    else
    {
        [sourceViewController.view removeFromSuperview];
        [sourceViewController removeFromParentViewController];
        
        [parentViewController addChildViewController:destinationViewController];
        [destinationViewController willMoveToParentViewController:parentViewController];
        [containerView addSubview:destinationViewController.view];
        [destinationViewController didMoveToParentViewController:parentViewController];
    }
}


@end