Classes/CDIWebViewController.m

//
//  CDIWebViewController.m
//  Cheddar for iOS
//
//  Created by Sam Soffes on 7/28/12.
//  Copyright (c) 2012 Nothing Magical. All rights reserved.
//

#import "CDIWebViewController.h"
#import "CDIHUDView.h"
#import "UIColor+CheddariOSAdditions.h"

@interface CDIWebViewController ()
- (void)_updateBrowserUI;
@end

@implementation CDIWebViewController {
	NSURL *_url;
	UIActivityIndicatorView *_indicator;
	UIBarButtonItem *_backBarButton;
	UIBarButtonItem *_forwardBarButton;
}

@synthesize webView = _webView;

#pragma mark - UIViewController

- (void)viewDidLoad {
	[super viewDidLoad];
	
	_indicator = [[UIActivityIndicatorView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 22.0f, 22.0f)];
	_indicator.hidesWhenStopped = YES;
	self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:_indicator];
	
	_webView = [[SSWebView alloc] initWithFrame:self.view.bounds];
	_webView.backgroundColor = [UIColor cheddarArchesColor];
	_webView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
	_webView.delegate = self;
	_webView.scalesPageToFit = YES;
	[_webView loadURL:_url];
	[self.view addSubview:_webView];
	
	_backBarButton = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"back-button"] landscapeImagePhone:[UIImage imageNamed:@"back-button-mini"] style:UIBarButtonItemStylePlain target:_webView action:@selector(goBack)];
	_forwardBarButton = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"forward-button"] landscapeImagePhone:[UIImage imageNamed:@"forward-button-mini"] style:UIBarButtonItemStylePlain target:_webView action:@selector(goForward)];
	
	UIBarButtonItem *flexibleSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];

	self.navigationController.toolbar.tintColor = [UIColor colorWithRed:0.369f green:0.392f blue:0.447f alpha:1.0f];
	self.toolbarItems = [NSArray arrayWithObjects:
						 _backBarButton,
						 flexibleSpace,
						 _forwardBarButton,
						 flexibleSpace,
						 [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"reload-button"] landscapeImagePhone:[UIImage imageNamed:@"reload-button-mini"] style:UIBarButtonItemStylePlain target:_webView action:@selector(reload)],
						 flexibleSpace,
						 [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"safari-button"] landscapeImagePhone:[UIImage imageNamed:@"safari-button-mini"] style:UIBarButtonItemStylePlain target:self action:@selector(openSafari:)],
						 flexibleSpace,
						 [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"action-button"] landscapeImagePhone:[UIImage imageNamed:@"action-button-mini"] style:UIBarButtonItemStylePlain target:self action:@selector(openActionSheet:)],
						 nil];
	
	for (UIBarButtonItem *button in self.toolbarItems) {
		button.imageInsets = UIEdgeInsetsMake(3.0f, 0.0f, 0.0f, 0.0f);
	}
	
	if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
		self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Close" style:UIBarButtonItemStyleBordered target:self action:@selector(close:)];
	}
}


- (void)viewWillAppear:(BOOL)animated {
	[super viewWillAppear:animated];

	if (![_url isFileURL]) {
		[self.navigationController setToolbarHidden:NO animated:animated];
	}
}


- (void)viewWillDisappear:(BOOL)animated {
	[super viewWillDisappear:animated];
	[self.navigationController setToolbarHidden:YES animated:animated];
}


- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation {
	if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
		return YES;
	}
	
	return toInterfaceOrientation != UIInterfaceOrientationPortraitUpsideDown;
}


#pragma mark - URL Loading

- (void)loadURL:(NSURL *)url {
	_url = url;
}


- (NSURL *)currentURL {
	NSURL *url = _webView.lastRequest.mainDocumentURL;
	if (!url) {
		url = _url;
	}
	return url;
}


#pragma mark - Actions

- (void)close:(id)sender {
	[self.navigationController dismissModalViewControllerAnimated:YES];
}


- (void)openSafari:(id)sender {
	[[UIApplication sharedApplication] openURL:self.currentURL];
}


- (void)openActionSheet:(id)sender {
	UIActionSheet *actionSheet = nil;
	
	if ([MFMailComposeViewController canSendMail] == NO) {
		actionSheet = [[UIActionSheet alloc] initWithTitle:nil delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles:@"Copy URL", nil];
	} else {
		actionSheet = [[UIActionSheet alloc] initWithTitle:nil delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles:@"Copy URL", @"Email URL", nil];
	}
	
	actionSheet.actionSheetStyle = UIActionSheetStyleBlackTranslucent;
	[actionSheet showInView:self.navigationController.view];
}


- (void)copyURL:(id)sender {
	[[UIPasteboard generalPasteboard] setURL:self.currentURL];
}


- (void)emailURL:(id)sender {
	if ([MFMailComposeViewController canSendMail] == NO) {
		return;
	}
	
	MFMailComposeViewController *viewController = [[MFMailComposeViewController alloc] init];
	viewController.subject = self.title;
	viewController.mailComposeDelegate = self;
	[viewController setMessageBody:_webView.lastRequest.mainDocumentURL.absoluteString isHTML:NO];
	[self.navigationController presentModalViewController:viewController animated:YES];
}


#pragma mark - Private

- (void)_updateBrowserUI {
	_backBarButton.enabled = [_webView canGoBack];
	_forwardBarButton.enabled = [_webView canGoForward];

	UIBarButtonItem *reloadButton = nil;
	
	if ([_webView isLoadingPage]) {
		[_indicator startAnimating];
		reloadButton = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"stop-button"] landscapeImagePhone:[UIImage imageNamed:@"stop-button-mini"] style:UIBarButtonItemStylePlain target:_webView action:@selector(stopLoading)];
	} else {
		[_indicator stopAnimating];
		reloadButton = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"reload-button"] landscapeImagePhone:[UIImage imageNamed:@"reload-button-mini"] style:UIBarButtonItemStylePlain target:_webView action:@selector(reload)];
	}
	reloadButton.imageInsets = UIEdgeInsetsMake(3.0f, 0.0f, 0.0f, 0.0f);
	
	NSMutableArray *items = [self.toolbarItems mutableCopy];
	[items replaceObjectAtIndex:4 withObject:reloadButton];
	self.toolbarItems = items;
}


#pragma mark - SSWebViewDelegate

- (void)webViewDidStartLoadingPage:(SSWebView *)aWebView {
	NSURL *url = _webView.lastRequest.mainDocumentURL;
	self.title = url.absoluteString;
	[self _updateBrowserUI];

	[self.navigationController setToolbarHidden:[url isFileURL] animated:YES];
}


- (void)webViewDidLoadDOM:(SSWebView *)aWebView {
	NSString *title = [_webView stringByEvaluatingJavaScriptFromString:@"document.title"];
	if (title && title.length > 0) {
		self.title = title;
	}
}


- (void)webViewDidFinishLoadingPage:(SSWebView *)aWebView {
	[self _updateBrowserUI];
}


#pragma mark - UIActionSheetDelegate

- (void)actionSheet:(UIActionSheet *)actionSheet didDismissWithButtonIndex:(NSInteger)buttonIndex {
	if (buttonIndex == 0) {
		[self copyURL:actionSheet];
	} else if (buttonIndex == 1 && [MFMailComposeViewController canSendMail]) {
		[self emailURL:actionSheet];
	}
}


#pragma mark - MFMailComposeViewControllerDelegate

- (void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error {
	[controller dismissModalViewControllerAnimated:YES];
	
	if (result == MFMailComposeResultSent) {
		CDIHUDView *hud = [[CDIHUDView alloc] init];
		[hud completeQuicklyWithTitle:@"Sent!"];
	}
}

@end