/*

     File: APLDetailViewController.m

 Abstract: n/a

  Version: 2.0

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 */

#import "APLDetailViewController.h"

#import "APLMasterTableViewController.h"

#import "APLPopoverContentViewController.h"

@interface APLDetailViewController ()

@property (nonatomic, weak) IBOutlet UIToolbar *toolbar;

@property (nonatomic, strong) UIPopoverController *barButtonItemPopover;

@property (nonatomic, strong) UIPopoverController *detailViewPopover;

@property (nonatomic, strong) id lastTappedButton;

@property (nonatomic, strong) UIPopoverController *masterPopoverController;

@property (nonatomic, weak) IBOutlet UILabel *detailLabel;

@end

@implementation APLDetailViewController

#pragma mark - Split view support

- (void)splitViewController: (UISplitViewController*)svc willHideViewController:(UIViewController *)aViewController withBarButtonItem:(UIBarButtonItem *)barButtonItem forPopoverController:(UIPopoverController*)popoverController

{

    barButtonItem.title = NSLocalizedString(@"Master", @"Master");

    [self.navigationItem setLeftBarButtonItem:barButtonItem animated:YES];

    self.masterPopoverController = popoverController;

}

// Called when the view is shown again in the split view, invalidating the button and popover controller.

- (void)splitViewController: (UISplitViewController*)svc willShowViewController:(UIViewController *)aViewController invalidatingBarButtonItem:(UIBarButtonItem *)barButtonItem

{

    // Called when the view is shown again in the split view, invalidating the button and popover controller.

    [self.navigationItem setLeftBarButtonItem:nil animated:YES];

    self.masterPopoverController = nil;

}

// Called when the hidden view controller is about to be displayed in a popover.

- (void)splitViewController:(UISplitViewController*)svc popoverController:(UIPopoverController*)pc willPresentViewController:(UIViewController *)aViewController

{

    // Check whether the popover presented from the "Tap" UIBarButtonItem is visible.

    if ([self.barButtonItemPopover isPopoverVisible])

    {

        // Dismiss the popover.

        [self.barButtonItemPopover dismissPopoverAnimated:YES];

    } 

}

#pragma mark - Rotation support

- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration

{

    // If the detail popover is presented, dismiss it.

    if (self.detailViewPopover != nil)

    {

        [self.detailViewPopover dismissPopoverAnimated:YES];

    }

}

- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation

{

    // If the last button tapped is not nil, present the popover from that button.

    if (self.lastTappedButton != nil)

    {

        [self showPopover:self.lastTappedButton];

    }

}

#pragma mark - View lifecycle

// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.

- (void)viewDidLoad

{

    [super viewDidLoad];

    APLPopoverContentViewController *content = [self.storyboard instantiateViewControllerWithIdentifier:@"PopoverContentController"];

    // Setup the popover for use in the detail view.

    self.detailViewPopover = [[UIPopoverController alloc] initWithContentViewController:content];

    self.detailViewPopover.popoverContentSize = CGSizeMake(320., 320.);

    self.detailViewPopover.delegate = self;

    // Setup the popover for use from the navigation bar.

    self.barButtonItemPopover = [[UIPopoverController alloc] initWithContentViewController:content];

    self.barButtonItemPopover.popoverContentSize = CGSizeMake(320., 320.);

    self.barButtonItemPopover.delegate = self;

}

#pragma mark - Popover controller delegates

- (void)popoverControllerDidDismissPopover:(UIPopoverController *)popoverController

{

    // If a popover is dismissed, set the last button tapped to nil.

    self.lastTappedButton = nil;

}

#pragma mark - Managing popovers

- (IBAction)showPopover:(id)sender

{

    // Set the sender to a UIButton.

    UIButton *tappedButton = (UIButton *)sender;

    // Present the popover from the button that was tapped in the detail view.

    [self.detailViewPopover presentPopoverFromRect:tappedButton.frame inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];

    // Set the last button tapped to the current button that was tapped.

    self.lastTappedButton = sender;

}

- (IBAction)showPopoverFromToolbarItem:(UIBarButtonItem *)sender

{

    // If the master list popover is showing, dismiss it before presenting the popover from the bar button item.

    if (self.masterPopoverController != nil)

    {

        [self.masterPopoverController dismissPopoverAnimated:YES];

    } 

    // If the popover is already showing from the bar button item, dismiss it. Otherwise, present it.

    if (self.barButtonItemPopover.popoverVisible == NO)

    {

        [self.barButtonItemPopover presentPopoverFromBarButtonItem:sender permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];

    }

    else

    {

        [self.barButtonItemPopover dismissPopoverAnimated:YES];

    }

}

#pragma mark - Managing the detail item

// When setting the detail item, update the view and dismiss the popover controller if it's showing

- (void)setDetailItem:(id)newDetailItem

{

    if (self.detailItem != newDetailItem)

    {

        _detailItem = newDetailItem;

        [self configureView];

    }

    if (self.masterPopoverController != nil)

    {

        [self.masterPopoverController dismissPopoverAnimated:YES];

    }

}

- (void)configureView

{

    // Update the user interface for the detail item.

    self.detailLabel.text = self.detailItem;

}

@end