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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "base/stringprintf.h" | |
| 6 #include "chrome/browser/extensions/web_intent_callbacks.h" | |
| 7 #include "chrome/browser/profiles/profile_dependency_manager.h" | |
| 8 #include "chrome/common/extensions/extension.h" | |
| 9 #include "content/public/browser/web_contents.h" | |
| 10 #include "content/public/browser/web_contents_observer.h" | |
| 11 #include "content/public/browser/web_intents_dispatcher.h" | |
| 12 | |
| 13 namespace { | |
| 14 | |
| 15 // Get the key for use inside the internal pending WebIntentCallbacks map. | |
| 16 std::string GetKey(const extensions::Extension* extension, int id) { | |
| 17 return StringPrintf("%s/%d", extension->id().c_str(), id); | |
| 18 } | |
| 19 | |
| 20 } // namespace | |
| 21 | |
| 22 namespace extensions { | |
| 23 | |
| 24 // SourceObserver is a subclass of WebContentsObserver that is instantiated | |
| 25 // on RegisterCallback to wait for the source WebContents to be destroyed. | |
| 26 // If it is destroyed, this automatically clears the callback from pending_. | |
| 27 class WebIntentCallbacks::SourceObserver : content::WebContentsObserver { | |
| 28 public: | |
| 29 SourceObserver(content::WebContents* web_contents, | |
| 30 WebIntentCallbacks* callbacks, | |
| 31 const std::string& key) | |
| 32 : content::WebContentsObserver(web_contents), | |
| 33 callbacks_(callbacks), | |
| 34 key_(key) {} | |
| 35 virtual ~SourceObserver() {} | |
| 36 | |
| 37 // Implement WebContentsObserver | |
| 38 virtual void WebContentsDestroyed(content::WebContents* web_contents) | |
| 39 OVERRIDE { | |
| 40 content::WebIntentsDispatcher* dispatcher = | |
| 41 callbacks_->GetAndClear(key_); | |
| 42 if (dispatcher) | |
| 43 delete dispatcher; | |
| 44 | |
| 45 delete this; | |
| 46 } | |
| 47 | |
| 48 private: | |
| 49 WebIntentCallbacks* callbacks_; | |
| 50 const std::string key_; | |
| 51 }; | |
| 52 | |
| 53 WebIntentCallbacks::WebIntentCallbacks() : last_id_(0) {} | |
| 54 | |
| 55 WebIntentCallbacks::~WebIntentCallbacks() {} | |
| 56 | |
| 57 // static | |
| 58 WebIntentCallbacks* WebIntentCallbacks::Get(Profile* profile) { | |
| 59 return Factory::GetForProfile(profile); | |
| 60 } | |
| 61 | |
| 62 int WebIntentCallbacks::RegisterCallback( | |
| 63 const Extension* extension, | |
| 64 content::WebIntentsDispatcher* dispatcher, | |
| 65 content::WebContents* source) { | |
| 66 int id = ++last_id_; | |
| 67 std::string key = GetKey(extension, id); | |
| 68 pending_[key] = dispatcher; | |
| 69 | |
| 70 // TODO(thorogood): We should also listen for extension suspend events, and | |
| 71 // clear the relevant callback (i.e., the handler of this intent) | |
| 72 | |
| 73 // TODO(thorogood): The source window may actually be a ShellWindow of a | |
| 74 // platform app. In this case, we should not wait for its destruction: | |
| 75 // rather, we should be listening to platform app suspend events. | |
| 76 | |
| 77 // Listen to when the source WebContent is destroyed. This object is self- | |
| 78 // deleting on this event. | |
| 79 DCHECK(source); | |
| 80 new SourceObserver(source, this, key); | |
| 81 | |
| 82 return id; | |
| 83 } | |
| 84 | |
| 85 content::WebIntentsDispatcher* WebIntentCallbacks::RetrieveCallback( | |
| 86 const Extension* extension, int id) { | |
| 87 std::string key = GetKey(extension, id); | |
| 88 return GetAndClear(key); | |
| 89 } | |
| 90 | |
| 91 content::WebIntentsDispatcher* WebIntentCallbacks::GetAndClear( | |
| 92 const std::string& key) { | |
| 93 if (!pending_.count(key)) | |
| 94 return NULL; | |
| 95 | |
| 96 content::WebIntentsDispatcher* dispatcher = pending_[key]; | |
| 97 pending_.erase(key); | |
| 98 return dispatcher; | |
| 99 } | |
| 100 | |
| 101 /////////////////////////////////////////////////////////////////////////////// | |
| 102 // Factory boilerplate | |
| 103 | |
| 104 // static | |
| 105 WebIntentCallbacks* WebIntentCallbacks::Factory::GetForProfile( | |
| 106 Profile* profile) { | |
| 107 return static_cast<WebIntentCallbacks*>( | |
| 108 GetInstance()->GetServiceForProfile(profile, true)); | |
| 109 } | |
| 110 | |
| 111 WebIntentCallbacks::Factory* WebIntentCallbacks::Factory::GetInstance() { | |
| 112 return Singleton<WebIntentCallbacks::Factory>::get(); | |
| 113 } | |
| 114 | |
| 115 WebIntentCallbacks::Factory::Factory() | |
| 116 : ProfileKeyedServiceFactory("WebIntentCallbacks", | |
| 117 ProfileDependencyManager::GetInstance()) { | |
| 118 } | |
| 119 | |
| 120 WebIntentCallbacks::Factory::~Factory() { | |
| 121 } | |
| 122 | |
| 123 ProfileKeyedService* WebIntentCallbacks::Factory::BuildServiceInstanceFor( | |
| 124 Profile* profile) const { | |
| 125 return new WebIntentCallbacks(); | |
| 126 } | |
| 127 | |
| 128 } // namespace extensions | |
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Chromium Code Reviews
Issue 12225076:
Delete most web intents code. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src