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1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2010 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/extension_event_router.h" | 5 #include "chrome/browser/extensions/extension_event_router.h" |
6 | 6 |
7 #include "base/values.h" | 7 #include "base/values.h" |
8 #include "chrome/browser/child_process_security_policy.h" | 8 #include "chrome/browser/child_process_security_policy.h" |
9 #include "chrome/browser/extensions/extension_devtools_manager.h" | 9 #include "chrome/browser/extensions/extension_devtools_manager.h" |
| 10 #include "chrome/browser/extensions/extension_processes_api.h" |
| 11 #include "chrome/browser/extensions/extension_processes_api_constants.h" |
10 #include "chrome/browser/extensions/extension_tabs_module.h" | 12 #include "chrome/browser/extensions/extension_tabs_module.h" |
11 #include "chrome/browser/profile.h" | 13 #include "chrome/browser/profile.h" |
12 #include "chrome/browser/renderer_host/render_process_host.h" | 14 #include "chrome/browser/renderer_host/render_process_host.h" |
13 #include "chrome/common/extensions/extension.h" | 15 #include "chrome/common/extensions/extension.h" |
14 #include "chrome/common/notification_service.h" | 16 #include "chrome/common/notification_service.h" |
15 #include "chrome/common/render_messages.h" | 17 #include "chrome/common/render_messages.h" |
16 | 18 |
17 namespace { | 19 namespace { |
18 | 20 |
19 const char kDispatchEvent[] = "Event.dispatchJSON"; | 21 const char kDispatchEvent[] = "Event.dispatchJSON"; |
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55 void ExtensionEventRouter::AddEventListener( | 57 void ExtensionEventRouter::AddEventListener( |
56 const std::string& event_name, | 58 const std::string& event_name, |
57 int render_process_id) { | 59 int render_process_id) { |
58 DCHECK_EQ(listeners_[event_name].count(render_process_id), 0u) << event_name; | 60 DCHECK_EQ(listeners_[event_name].count(render_process_id), 0u) << event_name; |
59 listeners_[event_name].insert(render_process_id); | 61 listeners_[event_name].insert(render_process_id); |
60 | 62 |
61 if (extension_devtools_manager_.get()) { | 63 if (extension_devtools_manager_.get()) { |
62 extension_devtools_manager_->AddEventListener(event_name, | 64 extension_devtools_manager_->AddEventListener(event_name, |
63 render_process_id); | 65 render_process_id); |
64 } | 66 } |
| 67 |
| 68 // We lazily tell the TaskManager to start updating when listeners to the |
| 69 // processes.onUpdated event arrive. |
| 70 if (event_name.compare(extension_processes_api_constants::kOnUpdated) == 0) |
| 71 ExtensionProcessesEventRouter::GetInstance()->ListenerAdded(); |
65 } | 72 } |
66 | 73 |
67 void ExtensionEventRouter::RemoveEventListener( | 74 void ExtensionEventRouter::RemoveEventListener( |
68 const std::string& event_name, | 75 const std::string& event_name, |
69 int render_process_id) { | 76 int render_process_id) { |
70 DCHECK_EQ(listeners_[event_name].count(render_process_id), 1u) << | 77 DCHECK_EQ(listeners_[event_name].count(render_process_id), 1u) << |
71 " PID=" << render_process_id << " event=" << event_name; | 78 " PID=" << render_process_id << " event=" << event_name; |
72 listeners_[event_name].erase(render_process_id); | 79 listeners_[event_name].erase(render_process_id); |
73 | 80 |
74 if (extension_devtools_manager_.get()) { | 81 if (extension_devtools_manager_.get()) { |
75 extension_devtools_manager_->RemoveEventListener(event_name, | 82 extension_devtools_manager_->RemoveEventListener(event_name, |
76 render_process_id); | 83 render_process_id); |
77 } | 84 } |
| 85 |
| 86 // If a processes.onUpdated event listener is removed (or a process with one |
| 87 // exits), then we let the TaskManager know that it has one fewer listener. |
| 88 if (event_name.compare(extension_processes_api_constants::kOnUpdated) == 0) |
| 89 ExtensionProcessesEventRouter::GetInstance()->ListenerRemoved(); |
78 } | 90 } |
79 | 91 |
80 bool ExtensionEventRouter::HasEventListener(const std::string& event_name) { | 92 bool ExtensionEventRouter::HasEventListener(const std::string& event_name) { |
81 return (listeners_.find(event_name) != listeners_.end() && | 93 return (listeners_.find(event_name) != listeners_.end() && |
82 !listeners_[event_name].empty()); | 94 !listeners_[event_name].empty()); |
83 } | 95 } |
84 | 96 |
85 void ExtensionEventRouter::DispatchEventToRenderers( | 97 void ExtensionEventRouter::DispatchEventToRenderers( |
86 const std::string& event_name, const std::string& event_args, | 98 const std::string& event_name, const std::string& event_args, |
87 Profile* restrict_to_profile, const GURL& event_url) { | 99 Profile* restrict_to_profile, const GURL& event_url) { |
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138 if (current->second.count(renderer->id()) != 0) | 150 if (current->second.count(renderer->id()) != 0) |
139 RemoveEventListener(current->first, renderer->id()); | 151 RemoveEventListener(current->first, renderer->id()); |
140 } | 152 } |
141 break; | 153 break; |
142 } | 154 } |
143 default: | 155 default: |
144 NOTREACHED(); | 156 NOTREACHED(); |
145 return; | 157 return; |
146 } | 158 } |
147 } | 159 } |
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