#import "HelpLayer.h"

@implementation HelpLayer

	-(id) init
	{
		self = [super init];
		if( self != nil )
		{
			// set frame for webview
			CGRect frame = viewFrame;
			frame.origin = CGPointZero;
			frame.size.height -= 30.0f;//navigationController.navigationBar.frame.size.height;

			// create a view controller for the web view
			rootView = [[MyWebViewController alloc] init];
			rootView.startPage = @"Help";
			[rootView setFrame:frame];
		}
		return self;
	}
	
	-(void) dealloc
	{
		[rootView release];
		rootView = nil;
		[super dealloc];
	}
	
	-(void) createView
	{
		[super createView];
		
		// add view to the stack
		[navigationController pushViewController:rootView animated:YES];
	}
	
	-(void) destroyView
	{
		[navigationController popViewControllerAnimated:YES];
		
		[super destroyView];
	}

	-(void) backBtn
	{
		[[KITSound sharedSound] playSound:@"Tap-Up.caf"];
		[rootView.webView goBack];
	}

	-(void) forwardBtn
	{
		[[KITSound sharedSound] playSound:@"Tap-Up.caf"];
		[rootView.webView goForward];
	}
	
	-(void) doneBtn
	{
		[self removeFromParentAndCleanup:YES];
	}

	-(void) navigationController:(UINavigationController*)navController willShowViewController:(UIViewController*)viewController animated:(BOOL)animated
	{
		// add done button
		if( rootView.navigationItem.rightBarButtonItem == nil )
		{
			UIBarButtonItem *item = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone
				target:self action:@selector(doneBtn)];
			item.enabled = YES;
			rootView.navigationItem.rightBarButtonItem = item;  
			[item release];
		}

		// add back button
		if( rootView.navigationItem.leftBarButtonItem == nil )
		{
			UIBarButtonItem *backItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemRewind
				target:self action:@selector(backBtn)];
			backItem.enabled = NO;
			rootView.navigationItem.leftBarButtonItem = backItem;
			[backItem release];
		}

		// show title
		if( ![rootView.title length] )
		{
			rootView.title = @"ShakeMidi Help";
		}
	}

@end