Category for tracking and hiding a popover during full screen video

gistfile1.m

@implementation UIViewController (RBPopover)

- (void)startTrackingHidePopover {
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(hidePopover:)
                                                 name:NOTIFICATION_POPOVER_HIDE
                                               object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(showPopover:)
                                                 name:NOTIFICATION_POPOVER_SHOW
                                               object:nil];
}

- (void)stopTrackingHidePopover {
    [[NSNotificationCenter defaultCenter] removeObserver:self
                                                    name:NOTIFICATION_POPOVER_HIDE
                                                  object:nil];
    [[NSNotificationCenter defaultCenter] removeObserver:self
                                                    name:NOTIFICATION_POPOVER_SHOW
                                                  object:nil];
}



- (void)presentPopover:(UIPopoverController *)popover fromRect:(CGRect)rect permittedArrowDirections:(UIPopoverArrowDirection)arrowDirections animated:(BOOL)animated {
    self.hiddenPopoverController = popover;
    self.hiddenPopoverPresentingRect = rect;
    self.hiddenPopoverPresentingButton = nil;
    self.hiddenPopoverArrowDirection = arrowDirections;
    self.hiddenPopoverAnimated = animated;
    if ([popover delegate]) {
        self.hiddenPopoverDelegate = [popover delegate];
    }
    
    [popover presentPopoverFromRect:rect inView:[self view] permittedArrowDirections:arrowDirections animated:animated];
}


- (void)presentPopover:(UIPopoverController *)popover fromBarButtonItem:(UIBarButtonItem *)button permittedArrowDirections:(UIPopoverArrowDirection)arrowDirections animated:(BOOL)animated {
    self.hiddenPopoverController = popover;
    self.hiddenPopoverPresentingButton = button;
    self.hiddenPopoverArrowDirection = arrowDirections;
    self.hiddenPopoverAnimated = animated;

    [popover presentPopoverFromBarButtonItem:button permittedArrowDirections:arrowDirections animated:animated];
}



- (void)dismissedPopover {
    // Don't destroy any data if we are in the middle of the hiding process
    if (self.hiddenPopoverHidingInProgress) {
        return;
    }
    
    self.hiddenPopoverDelegate = nil;
    self.hiddenPopoverContent = nil;
    self.hiddenPopoverController = nil;
    self.hiddenPopoverPresentingButton = nil;
}


#pragma mark - Popover notifications

// Temporarily hide a popover
- (void)hidePopover:(NSNotification *)notification {
    self.hiddenPopoverContent = nil;
    
    if (self.hiddenPopoverController) {
        // Save some details of the current state
        // Holding on to the content view means we can go back to the same state
        self.hiddenPopoverContent = [self.hiddenPopoverController contentViewController];
        self.hiddenPopoverContentSize = [self.hiddenPopoverController popoverContentSize];
        
        id <UIPopoverControllerDelegate> popoverDelegate = [self.hiddenPopoverController delegate];
        self.hiddenPopoverDelegate = popoverDelegate;

        [self.hiddenPopoverController dismissPopoverAnimated:YES];

        self.hiddenPopoverHidingInProgress = YES;
        if (popoverDelegate) {
            [popoverDelegate popoverControllerDidDismissPopover:self.hiddenPopoverController];
        }
        self.hiddenPopoverHidingInProgress = NO;

        self.hiddenPopoverController = nil;
    }
}


// Show a popover that had previously been hidden
- (void)showPopover:(NSNotification *)notification {
    if (self.hiddenPopoverContent) {
        UIPopoverController *popover = [[UIPopoverController alloc] initWithContentViewController:self.hiddenPopoverContent];
        
        if ([popover respondsToSelector:@selector(popoverBackgroundViewClass)]) {
            [popover setPopoverBackgroundViewClass:[ZingPopoverBackgroundView class]];
        }
        
        CGSize popSize = self.hiddenPopoverContentSize;
        [popover setPopoverContentSize:popSize animated:YES];
        [popover setDelegate:self.hiddenPopoverDelegate];
        
        if (self.hiddenPopoverPresentingButton) {
            [popover presentPopoverFromBarButtonItem:self.hiddenPopoverPresentingButton permittedArrowDirections:self.hiddenPopoverArrowDirection animated:self.hiddenPopoverAnimated];
        } else {
            [popover presentPopoverFromRect:self.hiddenPopoverPresentingRect inView:[self view] permittedArrowDirections:self.hiddenPopoverArrowDirection animated:self.hiddenPopoverAnimated];
        }

        self.hiddenPopoverController = popover;
    }
}

@end