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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "chrome/browser/extensions/event_router.h" | 5 #include "chrome/browser/extensions/event_router.h" |
6 | 6 |
7 #include <utility> | 7 #include <utility> |
8 | 8 |
9 #include "base/bind.h" | 9 #include "base/bind.h" |
10 #include "base/command_line.h" | 10 #include "base/command_line.h" |
11 #include "base/message_loop.h" | 11 #include "base/message_loop.h" |
12 #include "base/stl_util.h" | 12 #include "base/stl_util.h" |
13 #include "base/values.h" | 13 #include "base/values.h" |
14 #include "base/version.h" | 14 #include "base/version.h" |
15 #include "chrome/browser/browser_process.h" | 15 #include "chrome/browser/browser_process.h" |
16 #include "chrome/browser/extensions/api/processes/processes_api_constants.h" | |
17 #include "chrome/browser/extensions/api/processes/processes_api.h" | |
18 #include "chrome/browser/extensions/api/runtime/runtime_api.h" | 16 #include "chrome/browser/extensions/api/runtime/runtime_api.h" |
19 #include "chrome/browser/extensions/api/web_request/web_request_api.h" | 17 #include "chrome/browser/extensions/api/web_request/web_request_api.h" |
20 #include "chrome/browser/extensions/event_names.h" | 18 #include "chrome/browser/extensions/event_names.h" |
21 #include "chrome/browser/extensions/extension_devtools_manager.h" | 19 #include "chrome/browser/extensions/extension_devtools_manager.h" |
22 #include "chrome/browser/extensions/extension_host.h" | 20 #include "chrome/browser/extensions/extension_host.h" |
23 #include "chrome/browser/extensions/extension_prefs.h" | 21 #include "chrome/browser/extensions/extension_prefs.h" |
24 #include "chrome/browser/extensions/extension_process_manager.h" | 22 #include "chrome/browser/extensions/extension_process_manager.h" |
25 #include "chrome/browser/extensions/extension_service.h" | 23 #include "chrome/browser/extensions/extension_service.h" |
26 #include "chrome/browser/extensions/extension_system.h" | 24 #include "chrome/browser/extensions/extension_system.h" |
27 #include "chrome/browser/extensions/lazy_background_task_queue.h" | 25 #include "chrome/browser/extensions/lazy_background_task_queue.h" |
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115 scoped_ptr<ListValue> event_args, | 113 scoped_ptr<ListValue> event_args, |
116 const GURL& event_url, | 114 const GURL& event_url, |
117 UserGestureState user_gesture, | 115 UserGestureState user_gesture, |
118 const EventFilteringInfo& info) { | 116 const EventFilteringInfo& info) { |
119 DispatchExtensionMessage(ipc_sender, extension_id, event_name, | 117 DispatchExtensionMessage(ipc_sender, extension_id, event_name, |
120 event_args.get(), event_url, user_gesture, info); | 118 event_args.get(), event_url, user_gesture, info); |
121 } | 119 } |
122 | 120 |
123 EventRouter::EventRouter(Profile* profile, ExtensionPrefs* extension_prefs) | 121 EventRouter::EventRouter(Profile* profile, ExtensionPrefs* extension_prefs) |
124 : profile_(profile), | 122 : profile_(profile), |
125 extension_devtools_manager_( | |
126 ExtensionSystem::Get(profile)->devtools_manager()), | |
127 listeners_(ALLOW_THIS_IN_INITIALIZER_LIST(this)), | 123 listeners_(ALLOW_THIS_IN_INITIALIZER_LIST(this)), |
128 dispatch_chrome_updated_event_(false) { | 124 dispatch_chrome_updated_event_(false) { |
129 registrar_.Add(this, content::NOTIFICATION_RENDERER_PROCESS_TERMINATED, | 125 registrar_.Add(this, content::NOTIFICATION_RENDERER_PROCESS_TERMINATED, |
130 content::NotificationService::AllSources()); | 126 content::NotificationService::AllSources()); |
131 registrar_.Add(this, content::NOTIFICATION_RENDERER_PROCESS_CLOSED, | 127 registrar_.Add(this, content::NOTIFICATION_RENDERER_PROCESS_CLOSED, |
132 content::NotificationService::AllSources()); | 128 content::NotificationService::AllSources()); |
133 registrar_.Add(this, chrome::NOTIFICATION_EXTENSIONS_READY, | 129 registrar_.Add(this, chrome::NOTIFICATION_EXTENSIONS_READY, |
134 content::Source<Profile>(profile_)); | 130 content::Source<Profile>(profile_)); |
135 registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_LOADED, | 131 registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_LOADED, |
136 content::Source<Profile>(profile_)); | 132 content::Source<Profile>(profile_)); |
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159 } | 155 } |
160 | 156 |
161 void EventRouter::RemoveEventListener(const std::string& event_name, | 157 void EventRouter::RemoveEventListener(const std::string& event_name, |
162 content::RenderProcessHost* process, | 158 content::RenderProcessHost* process, |
163 const std::string& extension_id) { | 159 const std::string& extension_id) { |
164 EventListener listener(event_name, extension_id, process, | 160 EventListener listener(event_name, extension_id, process, |
165 scoped_ptr<DictionaryValue>()); | 161 scoped_ptr<DictionaryValue>()); |
166 listeners_.RemoveListener(&listener); | 162 listeners_.RemoveListener(&listener); |
167 } | 163 } |
168 | 164 |
| 165 void EventRouter::RegisterObserver(Observer* observer, |
| 166 const std::string& event_name) { |
| 167 observers_[event_name] = observer; |
| 168 } |
| 169 |
| 170 void EventRouter::UnregisterObserver(Observer* observer) { |
| 171 std::vector<ObserverMap::iterator> iters_to_remove; |
| 172 for (ObserverMap::iterator iter = observers_.begin(); |
| 173 iter != observers_.end(); ++iter) { |
| 174 if (iter->second == observer) |
| 175 iters_to_remove.push_back(iter); |
| 176 } |
| 177 for (size_t i = 0; i < iters_to_remove.size(); ++i) |
| 178 observers_.erase(iters_to_remove[i]); |
| 179 } |
| 180 |
169 void EventRouter::OnListenerAdded(const EventListener* listener) { | 181 void EventRouter::OnListenerAdded(const EventListener* listener) { |
170 // We don't care about lazy events being added. | 182 // We don't care about lazy events being added. |
171 if (!listener->process) | 183 if (!listener->process) |
172 return; | 184 return; |
173 | 185 |
174 if (extension_devtools_manager_.get()) | 186 const std::string& event_name = listener->event_name; |
175 extension_devtools_manager_->AddEventListener(listener->event_name, | 187 ObserverMap::iterator observer = observers_.find(event_name); |
176 listener->process->GetID()); | 188 if (observer != observers_.end()) |
| 189 observer->second->OnListenerAdded(event_name); |
177 | 190 |
178 // We lazily tell the TaskManager to start updating when listeners to the | 191 // TODO(yoz): Migrate these to become EventRouter observers. |
179 // processes.onUpdated or processes.onUpdatedWithMemory events arrive. | 192 // EventRouter shouldn't need to know about them. |
180 const std::string& event_name = listener->event_name; | 193 ExtensionDevToolsManager* extension_devtools_manager = |
181 if (event_name.compare( | 194 ExtensionSystem::Get(profile_)->devtools_manager(); |
182 extensions::processes_api_constants::kOnUpdated) == 0 || | 195 if (extension_devtools_manager) |
183 event_name.compare( | 196 extension_devtools_manager->AddEventListener(event_name, |
184 extensions::processes_api_constants::kOnUpdatedWithMemory) == 0) | 197 listener->process->GetID()); |
185 extensions::ProcessesEventRouter::GetInstance()->ListenerAdded(); | |
186 | 198 |
187 if (SystemInfoEventRouter::IsSystemInfoEvent(event_name)) | 199 if (SystemInfoEventRouter::IsSystemInfoEvent(event_name)) |
188 SystemInfoEventRouter::GetInstance()->AddEventListener(event_name); | 200 SystemInfoEventRouter::GetInstance()->AddEventListener(event_name); |
189 } | 201 } |
190 | 202 |
191 void EventRouter::OnListenerRemoved(const EventListener* listener) { | 203 void EventRouter::OnListenerRemoved(const EventListener* listener) { |
192 // We don't care about lazy events being removed. | 204 // We don't care about lazy events being removed. |
193 if (!listener->process) | 205 if (!listener->process) |
194 return; | 206 return; |
195 | 207 |
196 const std::string& event_name = listener->event_name; | 208 const std::string& event_name = listener->event_name; |
197 if (extension_devtools_manager_.get()) | 209 ObserverMap::iterator observer = observers_.find(event_name); |
198 extension_devtools_manager_->RemoveEventListener( | 210 if (observer != observers_.end()) |
| 211 observer->second->OnListenerRemoved(event_name); |
| 212 |
| 213 // TODO(yoz): Migrate these to become EventRouter observers. |
| 214 // EventRouter shouldn't need to know about them. |
| 215 ExtensionDevToolsManager* extension_devtools_manager = |
| 216 ExtensionSystem::Get(profile_)->devtools_manager(); |
| 217 if (extension_devtools_manager) |
| 218 extension_devtools_manager->RemoveEventListener( |
199 event_name, listener->process->GetID()); | 219 event_name, listener->process->GetID()); |
200 | 220 |
201 // If a processes.onUpdated or processes.onUpdatedWithMemory event listener | |
202 // is removed (or a process with one exits), then we let the extension API | |
203 // know that it has one fewer listener. | |
204 if (event_name.compare( | |
205 extensions::processes_api_constants::kOnUpdated) == 0 || | |
206 event_name.compare( | |
207 extensions::processes_api_constants::kOnUpdatedWithMemory) == 0) | |
208 extensions::ProcessesEventRouter::GetInstance()->ListenerRemoved(); | |
209 | |
210 BrowserThread::PostTask( | 221 BrowserThread::PostTask( |
211 BrowserThread::IO, FROM_HERE, | 222 BrowserThread::IO, FROM_HERE, |
212 base::Bind(&NotifyEventListenerRemovedOnIOThread, | 223 base::Bind(&NotifyEventListenerRemovedOnIOThread, |
213 profile_, listener->extension_id, listener->event_name)); | 224 profile_, listener->extension_id, event_name)); |
214 | 225 |
215 if (SystemInfoEventRouter::IsSystemInfoEvent(event_name)) | 226 if (SystemInfoEventRouter::IsSystemInfoEvent(event_name)) |
216 SystemInfoEventRouter::GetInstance()->RemoveEventListener(event_name); | 227 SystemInfoEventRouter::GetInstance()->RemoveEventListener(event_name); |
217 } | 228 } |
218 | 229 |
219 void EventRouter::AddLazyEventListener(const std::string& event_name, | 230 void EventRouter::AddLazyEventListener(const std::string& event_name, |
220 const std::string& extension_id) { | 231 const std::string& extension_id) { |
221 scoped_ptr<EventListener> listener(new EventListener( | 232 scoped_ptr<EventListener> listener(new EventListener( |
222 event_name, extension_id, NULL, scoped_ptr<DictionaryValue>())); | 233 event_name, extension_id, NULL, scoped_ptr<DictionaryValue>())); |
223 bool is_new = listeners_.AddListener(listener.Pass()); | 234 bool is_new = listeners_.AddListener(listener.Pass()); |
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675 event_args(event_args.Pass()), | 686 event_args(event_args.Pass()), |
676 event_url(event_url), | 687 event_url(event_url), |
677 restrict_to_profile(restrict_to_profile), | 688 restrict_to_profile(restrict_to_profile), |
678 cross_incognito_args(NULL), | 689 cross_incognito_args(NULL), |
679 user_gesture(user_gesture), | 690 user_gesture(user_gesture), |
680 info(info) {} | 691 info(info) {} |
681 | 692 |
682 Event::~Event() {} | 693 Event::~Event() {} |
683 | 694 |
684 } // namespace extensions | 695 } // namespace extensions |
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