136 lines
5.2 KiB
Objective-C
136 lines
5.2 KiB
Objective-C
// Copyright 2012, Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#import <UIKit/UIKit.h>
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#import "OpenInChromeController.h"
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static NSString * const kGoogleChromeHTTPScheme = @"googlechrome:";
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static NSString * const kGoogleChromeHTTPSScheme = @"googlechromes:";
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static NSString * const kGoogleChromeCallbackScheme =
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@"googlechrome-x-callback:";
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static NSString * encodeByAddingPercentEscapes(NSString *input) {
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NSString *encodedValue =
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(NSString *)CFURLCreateStringByAddingPercentEscapes(
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kCFAllocatorDefault,
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(CFStringRef)input,
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NULL,
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(CFStringRef)@"!*'();:@&=+$,/?%#[]",
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kCFStringEncodingUTF8);
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return [encodedValue autorelease];
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}
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@implementation OpenInChromeController
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+ (OpenInChromeController *)sharedInstance {
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static OpenInChromeController *sharedInstance;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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sharedInstance = [[self alloc] init];
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});
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return sharedInstance;
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}
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- (BOOL)isChromeInstalled {
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NSURL *simpleURL = [NSURL URLWithString:kGoogleChromeHTTPScheme];
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NSURL *callbackURL = [NSURL URLWithString:kGoogleChromeCallbackScheme];
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return [[UIApplication sharedApplication] canOpenURL:simpleURL] ||
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[[UIApplication sharedApplication] canOpenURL:callbackURL];
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}
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- (BOOL)openInChrome:(NSURL *)url {
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return [self openInChrome:url withCallbackURL:nil createNewTab:NO];
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}
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- (BOOL)openInChrome:(NSURL *)url
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withCallbackURL:(NSURL *)callbackURL
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createNewTab:(BOOL)createNewTab {
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NSURL *chromeSimpleURL = [NSURL URLWithString:kGoogleChromeHTTPScheme];
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NSURL *chromeCallbackURL = [NSURL URLWithString:kGoogleChromeCallbackScheme];
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if ([[UIApplication sharedApplication] canOpenURL:chromeCallbackURL]) {
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NSString *appName =
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[[NSBundle mainBundle]
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objectForInfoDictionaryKey:@"CFBundleDisplayName"];
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NSString *scheme = [url.scheme lowercaseString];
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// Proceed only if scheme is http or https.
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if ([scheme isEqualToString:@"http"] ||
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[scheme isEqualToString:@"https"]) {
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NSMutableString *chromeURLString = [NSMutableString string];
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[chromeURLString appendFormat:
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@"%@//x-callback-url/open/?x-source=%@&url=%@",
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kGoogleChromeCallbackScheme,
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encodeByAddingPercentEscapes(appName),
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encodeByAddingPercentEscapes([url absoluteString])];
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if (callbackURL) {
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[chromeURLString appendFormat:@"&x-success=%@",
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encodeByAddingPercentEscapes([callbackURL absoluteString])];
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}
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if (createNewTab) {
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[chromeURLString appendString:@"&create-new-tab"];
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}
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NSURL *chromeURL = [NSURL URLWithString:chromeURLString];
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// Open the URL with Google Chrome.
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return [[UIApplication sharedApplication] openURL:chromeURL];
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}
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} else if ([[UIApplication sharedApplication] canOpenURL:chromeSimpleURL]) {
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NSString *scheme = [url.scheme lowercaseString];
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// Replace the URL Scheme with the Chrome equivalent.
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NSString *chromeScheme = nil;
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if ([scheme isEqualToString:@"http"]) {
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chromeScheme = kGoogleChromeHTTPScheme;
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} else if ([scheme isEqualToString:@"https"]) {
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chromeScheme = kGoogleChromeHTTPSScheme;
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}
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// Proceed only if a valid Google Chrome URI Scheme is available.
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if (chromeScheme) {
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NSString *absoluteString = [url absoluteString];
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NSRange rangeForScheme = [absoluteString rangeOfString:@":"];
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NSString *urlNoScheme =
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[absoluteString substringFromIndex:rangeForScheme.location + 1];
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NSString *chromeURLString =
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[chromeScheme stringByAppendingString:urlNoScheme];
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NSURL *chromeURL = [NSURL URLWithString:chromeURLString];
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// Open the URL with Google Chrome.
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return [[UIApplication sharedApplication] openURL:chromeURL];
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}
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}
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return NO;
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}
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@end
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