#include "MyWebViewController.h"

@implementation MyWebViewController
	
	@synthesize webView,startPage;

	-(id) init
	{
		self = [super init];
		if( self != nil )
		{
			self.view.autoresizesSubviews = YES;
			self.view.autoresizingMask = (UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth);
			self.view.backgroundColor = [UIColor clearColor];
			self.view.userInteractionEnabled = NO;

			// create the web view
			webView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)];
			webView.autoresizesSubviews = NO;
			webView.scalesPageToFit = YES;
			webView.delegate = self;
			webView.hidden = YES;
			webView.userInteractionEnabled = NO;

			// add activity indicator
			activityIndicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
			activityIndicator.frame = CGRectMake(0.0f, 0.0f, 40.0f, 40.0f);

			// add view to the stack
			[self.view addSubview:webView];
			[self.view addSubview:activityIndicator];
			[activityIndicator startAnimating];
		}
		return self;
	}
	
	-(void) dealloc
	{
		[activityIndicator removeFromSuperview];
		[activityIndicator release];
		activityIndicator = nil;

		[webView removeFromSuperview];
		[webView release];
		webView = nil;
		
		[super dealloc];
	}
	
	-(void) setFrame:(CGRect)frame
	{	
		self.view.frame = frame;
		webView.frame = frame;
		activityIndicator.center = CGPointMake(frame.size.width / 2.0f, frame.size.height / 2.0f);
	}
	
	-(void) viewWillAppear:(BOOL)animated
	{
		if( startPage != nil )
		{
			// load the html
			NSURL* url = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:startPage ofType:@"html"]];
			NSURLRequest* request = [NSURLRequest requestWithURL:url];
			[webView loadRequest:request];
			
			// invalidate start page so we don't load next time
			[startPage release];
			startPage = nil;
		}

		[super viewWillAppear:animated];
	}
	
	-(void) webViewDidStartLoad:(UIWebView*)view
	{
		webView.alpha = 0.25f;
		
		[activityIndicator startAnimating];
	}

	-(void) webViewDidFinishLoad:(UIWebView*)view
	{
		self.view.userInteractionEnabled = YES;
		webView.userInteractionEnabled = YES;

		webView.alpha = 1.0f;
		webView.hidden = NO;

		self.title = [webView stringByEvaluatingJavaScriptFromString:@"document.title"];
		self.navigationItem.leftBarButtonItem.enabled = webView.canGoBack;

		[activityIndicator stopAnimating];
	}

	-(BOOL) shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation
	{
		return NO;
	}

@end