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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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159 } | 157 } |
160 | 158 |
161 void EventRouter::RemoveEventListener(const std::string& event_name, | 159 void EventRouter::RemoveEventListener(const std::string& event_name, |
162 content::RenderProcessHost* process, | 160 content::RenderProcessHost* process, |
163 const std::string& extension_id) { | 161 const std::string& extension_id) { |
164 EventListener listener(event_name, extension_id, process, | 162 EventListener listener(event_name, extension_id, process, |
165 scoped_ptr<DictionaryValue>()); | 163 scoped_ptr<DictionaryValue>()); |
166 listeners_.RemoveListener(&listener); | 164 listeners_.RemoveListener(&listener); |
167 } | 165 } |
168 | 166 |
| 167 void EventRouter::RegisterObserver(Observer* observer, |
| 168 const std::string& event_name) { |
| 169 observers_[event_name] = observer; |
| 170 } |
| 171 |
169 void EventRouter::OnListenerAdded(const EventListener* listener) { | 172 void EventRouter::OnListenerAdded(const EventListener* listener) { |
170 // We don't care about lazy events being added. | 173 // We don't care about lazy events being added. |
171 if (!listener->process) | 174 if (!listener->process) |
172 return; | 175 return; |
173 | 176 |
| 177 const std::string& event_name = listener->event_name; |
| 178 ObserverMap::iterator observer = observers_.find(event_name); |
| 179 if (observer != observers_.end()) |
| 180 observer->second->OnListenerAdded(event_name); |
| 181 |
174 if (extension_devtools_manager_.get()) | 182 if (extension_devtools_manager_.get()) |
175 extension_devtools_manager_->AddEventListener(listener->event_name, | 183 extension_devtools_manager_->AddEventListener(event_name, |
176 listener->process->GetID()); | 184 listener->process->GetID()); |
177 | 185 |
178 // We lazily tell the TaskManager to start updating when listeners to the | |
179 // processes.onUpdated or processes.onUpdatedWithMemory events arrive. | |
180 const std::string& event_name = listener->event_name; | |
181 if (event_name.compare( | |
182 extensions::processes_api_constants::kOnUpdated) == 0 || | |
183 event_name.compare( | |
184 extensions::processes_api_constants::kOnUpdatedWithMemory) == 0) | |
185 extensions::ProcessesEventRouter::GetInstance()->ListenerAdded(); | |
186 | |
187 if (SystemInfoEventRouter::IsSystemInfoEvent(event_name)) | 186 if (SystemInfoEventRouter::IsSystemInfoEvent(event_name)) |
188 SystemInfoEventRouter::GetInstance()->AddEventListener(event_name); | 187 SystemInfoEventRouter::GetInstance()->AddEventListener(event_name); |
189 } | 188 } |
190 | 189 |
191 void EventRouter::OnListenerRemoved(const EventListener* listener) { | 190 void EventRouter::OnListenerRemoved(const EventListener* listener) { |
192 // We don't care about lazy events being removed. | 191 // We don't care about lazy events being removed. |
193 if (!listener->process) | 192 if (!listener->process) |
194 return; | 193 return; |
195 | 194 |
196 const std::string& event_name = listener->event_name; | 195 const std::string& event_name = listener->event_name; |
| 196 ObserverMap::iterator observer = observers_.find(event_name); |
| 197 if (observer != observers_.end()) |
| 198 observer->second->OnListenerRemoved(event_name); |
| 199 |
197 if (extension_devtools_manager_.get()) | 200 if (extension_devtools_manager_.get()) |
198 extension_devtools_manager_->RemoveEventListener( | 201 extension_devtools_manager_->RemoveEventListener( |
199 event_name, listener->process->GetID()); | 202 event_name, listener->process->GetID()); |
200 | 203 |
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( | 204 BrowserThread::PostTask( |
211 BrowserThread::IO, FROM_HERE, | 205 BrowserThread::IO, FROM_HERE, |
212 base::Bind(&NotifyEventListenerRemovedOnIOThread, | 206 base::Bind(&NotifyEventListenerRemovedOnIOThread, |
213 profile_, listener->extension_id, listener->event_name)); | 207 profile_, listener->extension_id, event_name)); |
214 | 208 |
215 if (SystemInfoEventRouter::IsSystemInfoEvent(event_name)) | 209 if (SystemInfoEventRouter::IsSystemInfoEvent(event_name)) |
216 SystemInfoEventRouter::GetInstance()->RemoveEventListener(event_name); | 210 SystemInfoEventRouter::GetInstance()->RemoveEventListener(event_name); |
217 } | 211 } |
218 | 212 |
219 void EventRouter::AddLazyEventListener(const std::string& event_name, | 213 void EventRouter::AddLazyEventListener(const std::string& event_name, |
220 const std::string& extension_id) { | 214 const std::string& extension_id) { |
221 scoped_ptr<EventListener> listener(new EventListener( | 215 scoped_ptr<EventListener> listener(new EventListener( |
222 event_name, extension_id, NULL, scoped_ptr<DictionaryValue>())); | 216 event_name, extension_id, NULL, scoped_ptr<DictionaryValue>())); |
223 bool is_new = listeners_.AddListener(listener.Pass()); | 217 bool is_new = listeners_.AddListener(listener.Pass()); |
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675 event_args(event_args.Pass()), | 669 event_args(event_args.Pass()), |
676 event_url(event_url), | 670 event_url(event_url), |
677 restrict_to_profile(restrict_to_profile), | 671 restrict_to_profile(restrict_to_profile), |
678 cross_incognito_args(NULL), | 672 cross_incognito_args(NULL), |
679 user_gesture(user_gesture), | 673 user_gesture(user_gesture), |
680 info(info) {} | 674 info(info) {} |
681 | 675 |
682 Event::~Event() {} | 676 Event::~Event() {} |
683 | 677 |
684 } // namespace extensions | 678 } // namespace extensions |
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