DetailViewController.m

//
//  DetailViewController.m
//  MGSplitView
//
//  Created by Matt Gemmell on 26/07/2010.
//  Copyright Instinctive Code 2010.
//

#import "DetailViewController.h"
#import "RootViewController.h"


@interface DetailViewController ()

@property (nonatomic, retain) UIPopoverController *popoverController;
- (void)configureView;

@end


@implementation DetailViewController


@synthesize toolbar, popoverController, detailItem, detailDescriptionLabel;


#pragma mark -
#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 (detailItem != newDetailItem) {
        [detailItem release];
        detailItem = [newDetailItem retain];
        
        // Update the view.
        [self configureView];
    }
	
    if (popoverController != nil) {
        [popoverController dismissPopoverAnimated:YES];
    }        
}


- (void)configureView
{
    // Update the user interface for the detail item.
    detailDescriptionLabel.text = [detailItem description];
	toggleItem.title = ([splitController isShowingMaster]) ? @"Hide Master" : @"Show Master"; // "I... AM... THE MASTER!" Derek Jacobi. Gave me chills.
	verticalItem.title = (splitController.vertical) ? @"Horizontal Split" : @"Vertical Split";
	dividerStyleItem.title = (splitController.dividerStyle == MGSplitViewDividerStyleThin) ? @"Enable Dragging" : @"Disable Dragging";
	masterBeforeDetailItem.title = (splitController.masterBeforeDetail) ? @"Detail First" : @"Master First";
}


#pragma mark -
#pragma mark Split view support


//- (void)splitViewController:(MGSplitViewController*)svc 
//	 willHideViewController:(UIViewController *)aViewController 
//		  withBarButtonItem:(UIBarButtonItem*)barButtonItem 
//	   forPopoverController: (UIPopoverController*)pc
//{
//	//NSLog(@"%@", NSStringFromSelector(_cmd));
//	
//	if (barButtonItem) {
//		barButtonItem.title = @"Popover";
//		NSMutableArray *items = [[toolbar items] mutableCopy];
//		[items insertObject:barButtonItem atIndex:0];
//		[toolbar setItems:items animated:YES];
//		[items release];
//	}
//    self.popoverController = pc;
//}


// Called when the view is shown again in the split view, invalidating the button and popover controller.
- (void)splitViewController:(MGSplitViewController*)svc 
	 willShowViewController:(UIViewController *)aViewController 
  invalidatingBarButtonItem:(UIBarButtonItem *)barButtonItem
{
	//NSLog(@"%@", NSStringFromSelector(_cmd));
	
	if (barButtonItem) {
		NSMutableArray *items = [[toolbar items] mutableCopy];
		[items removeObject:barButtonItem];
		[toolbar setItems:items animated:YES];
		[items release];
	}
    self.popoverController = nil;
}


- (void)splitViewController:(MGSplitViewController*)svc 
		  popoverController:(UIPopoverController*)pc 
  willPresentViewController:(UIViewController *)aViewController
{
	//NSLog(@"%@", NSStringFromSelector(_cmd));
}


- (void)splitViewController:(MGSplitViewController*)svc willChangeSplitOrientationToVertical:(BOOL)isVertical
{
	//NSLog(@"%@", NSStringFromSelector(_cmd));
}


- (void)splitViewController:(MGSplitViewController*)svc willMoveSplitToPosition:(float)position
{
	//NSLog(@"%@", NSStringFromSelector(_cmd));
}


- (float)splitViewController:(MGSplitViewController *)svc constrainSplitPosition:(float)proposedPosition splitViewSize:(CGSize)viewSize
{
	//NSLog(@"%@", NSStringFromSelector(_cmd));
	return proposedPosition;
}


#pragma mark -
#pragma mark Actions


- (IBAction)toggleMasterView:(id)sender
{
	[splitController toggleMasterView:sender];
	[self configureView];
}


- (IBAction)toggleVertical:(id)sender
{
	[splitController toggleSplitOrientation:self];
	[self configureView];
}


- (IBAction)toggleDividerStyle:(id)sender
{
	MGSplitViewDividerStyle newStyle = ((splitController.dividerStyle == MGSplitViewDividerStyleThin) ? MGSplitViewDividerStylePaneSplitter : MGSplitViewDividerStyleThin);
	[splitController setDividerStyle:newStyle animated:YES];
	[self configureView];
}


- (IBAction)toggleMasterBeforeDetail:(id)sender
{
	[splitController toggleMasterBeforeDetail:sender];
	[self configureView];
}


#pragma mark -
#pragma mark Rotation support


// Ensure that the view controller supports rotation and that the split view can therefore show in both portrait and landscape.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return YES;
}


- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
{
	[self configureView];
}


- (void)dealloc
{
    [popoverController release];
    [toolbar release];
    
    [detailItem release];
    [detailDescriptionLabel release];
    [super dealloc];
}


@end