NewsBlur/clients/ios/Other Sources/InAppSettingsKit/Controllers/IASKAppSettingsWebViewController.m

//
//  IASKAppSettingsWebViewController.h
//  http://www.inappsettingskit.com
//
//  Copyright (c) 2010:
//  Luc Vandal, Edovia Inc., http://www.edovia.com
//  Ortwin Gentz, FutureTap GmbH, http://www.futuretap.com
//  All rights reserved.
// 
//  It is appreciated but not required that you give credit to Luc Vandal and Ortwin Gentz, 
//  as the original authors of this code. You can give credit in a blog post, a tweet or on 
//  a info page of your app. Also, the original authors appreciate letting them know if you use this code.
//
//  This code is licensed under the BSD license that is available at: http://www.opensource.org/licenses/bsd-license.php
//

#import "IASKAppSettingsWebViewController.h"
#import "IASKSettingsReader.h"

@implementation IASKAppSettingsWebViewController

- (id)initWithFile:(NSString*)urlString specifier:(IASKSpecifier*)specifier {
    self = [super init];
    if (self) {
        self.url = [NSURL URLWithString:urlString];
        if (!self.url || ![self.url scheme]) {
            NSString *path = [[NSBundle mainBundle] pathForResource:[urlString stringByDeletingPathExtension] ofType:[urlString pathExtension]];
            if(path)
                self.url = [NSURL fileURLWithPath:path];
            else
                self.url = nil;
        }
		self.customTitle = [specifier localizedObjectForKey:kIASKChildTitle];
		self.title = self.customTitle ? : specifier.title;
    }
    return self;
}

- (void)loadView {
    self.webView = [[UIWebView alloc] init];
    self.webView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
    self.webView.delegate = self;
    
    self.view = self.webView;
}

- (void)viewWillAppear:(BOOL)animated {
	[super viewWillAppear:animated];
	
	UIActivityIndicatorView *activityIndicatorView = [[UIActivityIndicatorView alloc] initWithFrame:CGRectMake(0, 0, 40, 20)];
	activityIndicatorView.activityIndicatorViewStyle = UIActivityIndicatorViewStyleWhite;
	[activityIndicatorView startAnimating];
	self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:activityIndicatorView];
	[self.webView loadRequest:[NSURLRequest requestWithURL:self.url]];
}

- (void)webViewDidFinishLoad:(UIWebView *)webView {
	self.navigationItem.rightBarButtonItem = nil;
	self.title = self.customTitle.length ? self.customTitle : [self.webView stringByEvaluatingJavaScriptFromString:@"document.title"];
}

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {
	NSURL *newURL = [request URL];
	
	// intercept mailto URL and send it to an in-app Mail compose view instead
	if ([[newURL scheme] isEqualToString:@"mailto"]) {

		NSArray *rawURLparts = [[newURL resourceSpecifier] componentsSeparatedByString:@"?"];
		if (rawURLparts.count > 2) {
			return NO; // invalid URL
		}
		
		MFMailComposeViewController *mailViewController = [[MFMailComposeViewController alloc] init];
		mailViewController.mailComposeDelegate = self;

		NSMutableArray *toRecipients = [NSMutableArray array];
		NSString *defaultRecipient = [rawURLparts objectAtIndex:0];
		if (defaultRecipient.length) {
			[toRecipients addObject:defaultRecipient];
		}
		
		if (rawURLparts.count == 2) {
			NSString *queryString = [rawURLparts objectAtIndex:1];
			
			NSArray *params = [queryString componentsSeparatedByString:@"&"];
			for (NSString *param in params) {
				NSArray *keyValue = [param componentsSeparatedByString:@"="];
				if (keyValue.count != 2) {
					continue;
				}
				NSString *key = [[keyValue objectAtIndex:0] lowercaseString];
				NSString *value = [keyValue objectAtIndex:1];
				
				value =  CFBridgingRelease(CFURLCreateStringByReplacingPercentEscapes(kCFAllocatorDefault,
																					  (CFStringRef)value,
																					  CFSTR("")));
				
				if ([key isEqualToString:@"subject"]) {
					[mailViewController setSubject:value];
				}
				
				if ([key isEqualToString:@"body"]) {
					[mailViewController setMessageBody:value isHTML:NO];
				}
				
				if ([key isEqualToString:@"to"]) {
					[toRecipients addObjectsFromArray:[value componentsSeparatedByString:@","]];
				}
				
				if ([key isEqualToString:@"cc"]) {
					NSArray *recipients = [value componentsSeparatedByString:@","];
					[mailViewController setCcRecipients:recipients];
				}
				
				if ([key isEqualToString:@"bcc"]) {
					NSArray *recipients = [value componentsSeparatedByString:@","];
					[mailViewController setBccRecipients:recipients];
				}
			}
		}
		
		[mailViewController setToRecipients:toRecipients];

		mailViewController.navigationBar.barStyle = self.navigationController.navigationBar.barStyle;
		IASK_IF_IOS7_OR_GREATER(mailViewController.navigationBar.tintColor = self.navigationController.navigationBar.tintColor;);
		mailViewController.navigationBar.titleTextAttributes =  self.navigationController.navigationBar.titleTextAttributes;

		UIStatusBarStyle savedStatusBarStyle = [UIApplication sharedApplication].statusBarStyle;
		[self presentViewController:mailViewController animated:YES completion:^{
			[UIApplication sharedApplication].statusBarStyle = savedStatusBarStyle;
		}];
		return NO;
	}
	
	// open inline if host is the same, otherwise, pass to the system
	if (![newURL host] || [[newURL host] isEqualToString:[self.url host]]) {
		return YES;
	}
    [[UIApplication sharedApplication] openURL:newURL options:@{} completionHandler:nil];
	return NO;
}

- (void)mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error {
    [self dismissViewControllerAnimated:YES completion:nil];
}

@end