App rotations

#pragma mark - Application Orientations

/**
 *  iPhone: rotate only full gallery view or while movie is being played
 *  iPad: Lanscape only
 *
 *  @param application
 *  @param window
 *
 *  @return the orientations
 */
- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window{
    // Dont rotate for iPad. Allow to rotate if there is fullscreen video but while on iPhone or iPod,
    // only playback video in landscape - while leaving the app itself in portrait only.
    //
    //iPad behaviour
    if (INTERFACE_IS_IPAD)
        return UIInterfaceOrientationMaskLandscape;

    //iPhone behaviour
    NSUInteger orientations = UIInterfaceOrientationMaskAllButUpsideDown;
    UIWindow *keyWindow     = window; //[UIApplication sharedApplication].keyWindow;
    if(keyWindow && keyWindow.rootViewController){
        UIViewController *presentedViewController = [keyWindow.rootViewController topmostViewController];
        //NSLog(@"PresentedViewController: %@", [presentedViewController class]);

        if ([self vcIsVideoPlayer:presentedViewController] ){
            orientations = UIInterfaceOrientationMaskAll;
        }
        else{
            if ([presentedViewController isKindOfClass:[UIActivityViewController class]] || [presentedViewController isKindOfClass:[UIAlertController class]]) {
                orientations = UIInterfaceOrientationMaskPortrait;
            }
            else{
                orientations = [presentedViewController supportedInterfaceOrientations];
            }
        }
    }

    return orientations;
}

- (BOOL)vcIsVideoPlayer:(UIViewController *)vc{
    static NSString * const VIDEO_CONTROLLER_CLASS_NAME_IOS7   = @"MPInlineVideoFullscreenViewController";
    static NSString * const VIDEO_CONTROLLER_CLASS_NAME_IOS8   = @"AVFullScreenViewController";
    static NSString * const VIDEO_CONTROLLER_CLASS_NAME_NATIVE = @"MPMoviePlayerViewController";

    NSString *className = vc ? NSStringFromClass([vc class]) : nil;
    return (
            [className isEqualToString:VIDEO_CONTROLLER_CLASS_NAME_NATIVE] ||
            [className isEqualToString:VIDEO_CONTROLLER_CLASS_NAME_IOS7] ||
            [className isEqualToString:VIDEO_CONTROLLER_CLASS_NAME_IOS8]
            );
}