Hide and showing popovers

gistfile1.m

// 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;
    }
}