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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 "chrome/browser/chromeos/screensaver/screensaver_controller.h" | |
6 | |
7 #include "ash/screensaver/screensaver_view.h" | |
8 #include "ash/shell.h" | |
9 #include "ash/wm/user_activity_detector.h" | |
10 #include "base/bind.h" | |
11 #include "base/callback.h" | |
12 #include "base/logging.h" | |
13 #include "chrome/browser/extensions/extension_service.h" | |
14 #include "chrome/browser/extensions/extension_system.h" | |
15 #include "chrome/browser/profiles/profile_manager.h" | |
16 #include "chrome/common/chrome_notification_types.h" | |
17 #include "chrome/common/extensions/extension.h" | |
18 #include "chromeos/dbus/dbus_thread_manager.h" | |
19 #include "chromeos/dbus/power_manager_client.h" | |
20 #include "content/public/browser/notification_service.h" | |
21 | |
22 namespace { | |
23 | |
24 const int kScreensaverTimeoutMinutes = 2; | |
25 | |
26 ExtensionService* GetDefaultExtensionService() { | |
27 Profile* default_profile = ProfileManager::GetDefaultProfile(); | |
28 DCHECK(default_profile); | |
29 ExtensionService* service = | |
30 extensions::ExtensionSystem::Get(default_profile)->extension_service(); | |
31 DCHECK(service); | |
32 | |
33 return service; | |
34 } | |
35 | |
36 // Find the screensaver extension for the given service, excluding | |
37 // the one with exclude_id. | |
38 std::string FindScreensaverExtension(ExtensionService* service, | |
39 const std::string& exclude_id) { | |
40 const ExtensionSet* extensions = service->extensions(); | |
41 if (!extensions) | |
42 return std::string(); | |
43 | |
44 for (ExtensionSet::const_iterator it = extensions->begin(); | |
45 it != extensions->end(); | |
46 ++it) { | |
47 const extensions::Extension* extension = *it; | |
48 if (extension && | |
49 extension->id() != exclude_id && | |
50 extension->HasAPIPermission(extensions::APIPermission::kScreensaver)) | |
51 return extension->id(); | |
52 } | |
53 | |
54 return std::string(); | |
55 } | |
56 | |
57 void UninstallPreviousScreensavers(const extensions::Extension* current) { | |
58 Profile* default_profile = ProfileManager::GetDefaultProfile(); | |
59 DCHECK(default_profile); | |
60 ExtensionService* service = | |
61 extensions::ExtensionSystem::Get(default_profile)->extension_service(); | |
62 DCHECK(service); | |
63 | |
64 std::string screensaver_id; | |
65 while (!(screensaver_id = | |
66 FindScreensaverExtension(service, current->id())).empty()) { | |
67 string16 error; | |
68 if (!service->UninstallExtension(screensaver_id, false, &error)) | |
69 LOG(ERROR) << | |
70 "Couldn't uninstall previous screensaver extension with id: " << | |
71 screensaver_id << " \nError: " << error; | |
72 } | |
73 } | |
74 | |
75 } // namespace | |
76 | |
77 namespace chromeos { | |
78 | |
79 ScreensaverController::ScreensaverController() | |
80 : threshold_(base::TimeDelta::FromMinutes(kScreensaverTimeoutMinutes)), | |
81 weak_ptr_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)) { | |
82 // Register for extension changes. | |
83 registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_LOADED, | |
84 content::NotificationService::AllSources()); | |
85 registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNLOADED, | |
86 content::NotificationService::AllSources()); | |
87 | |
88 std::string screensaver_extension_id = | |
89 FindScreensaverExtension(GetDefaultExtensionService(), std::string()); | |
90 if (!screensaver_extension_id.empty()) | |
91 SetupScreensaver(screensaver_extension_id); | |
92 } | |
93 | |
94 ScreensaverController::~ScreensaverController() { | |
95 TeardownScreensaver(); | |
96 } | |
97 | |
98 void ScreensaverController::Observe( | |
99 int type, | |
100 const content::NotificationSource& source, | |
101 const content::NotificationDetails& details) { | |
102 switch (type) { | |
103 case chrome::NOTIFICATION_EXTENSION_INSTALLED: { | |
104 const extensions::Extension* extension = | |
105 content::Details<const extensions::Extension>(details).ptr(); | |
106 // Uninstall any previously installed screensaver extensions if a new | |
107 // screensaver extension is installed. | |
108 if (!extension->HasAPIPermission(extensions::APIPermission::kScreensaver)) | |
Matt Perry
2013/01/31 22:43:51
negate this
rkc
2013/01/31 22:53:56
Done.
| |
109 UninstallPreviousScreensavers(extension); | |
110 break; | |
111 } | |
112 case chrome::NOTIFICATION_EXTENSION_LOADED: { | |
113 const extensions::Extension* extension = | |
114 content::Details<const extensions::Extension>(details).ptr(); | |
115 if (!extension->HasAPIPermission(extensions::APIPermission::kScreensaver)) | |
116 return; | |
117 | |
118 SetupScreensaver(extension->id()); | |
119 break; | |
120 } | |
121 case chrome::NOTIFICATION_EXTENSION_UNLOADED: { | |
122 const extensions::Extension* extension = | |
123 content::Details<extensions::UnloadedExtensionInfo>( | |
124 details)->extension; | |
125 if (extension->id() == screensaver_extension_id_) | |
126 TeardownScreensaver(); | |
127 break; | |
128 } | |
129 } | |
130 } | |
131 | |
132 void ScreensaverController::IdleNotify(int64 threshold) { | |
133 ExtensionService* service = GetDefaultExtensionService(); | |
134 const extensions::Extension* screensaver_extension = | |
135 service->GetExtensionById(screensaver_extension_id_, | |
136 ExtensionService::INCLUDE_ENABLED); | |
137 ash::ShowScreensaver(screensaver_extension->GetFullLaunchURL()); | |
138 | |
139 if (!ash::Shell::GetInstance()->user_activity_detector()->HasObserver(this)) | |
140 ash::Shell::GetInstance()->user_activity_detector()->AddObserver(this); | |
141 } | |
142 | |
143 void ScreensaverController::OnUserActivity() { | |
144 // We don't want to handle further user notifications; we'll either login | |
145 // the user and close out or or at least close the screensaver. | |
146 if (ash::Shell::GetInstance()->user_activity_detector()->HasObserver(this)) | |
147 ash::Shell::GetInstance()->user_activity_detector()->RemoveObserver(this); | |
148 ash::CloseScreensaver(); | |
149 | |
150 RequestNextIdleNotification(); | |
151 } | |
152 | |
153 void ScreensaverController::SetupScreensaver( | |
154 const std::string& screensaver_extension_id) { | |
155 screensaver_extension_id_ = screensaver_extension_id; | |
156 | |
157 PowerManagerClient* power_manager = | |
158 DBusThreadManager::Get()->GetPowerManagerClient(); | |
159 if (!power_manager->HasObserver(this)) | |
160 power_manager->AddObserver(this); | |
161 | |
162 RequestNextIdleNotification(); | |
163 } | |
164 | |
165 void ScreensaverController::TeardownScreensaver() { | |
166 PowerManagerClient* power_manager = | |
167 DBusThreadManager::Get()->GetPowerManagerClient(); | |
168 if (power_manager && power_manager->HasObserver(this)) | |
169 power_manager->RemoveObserver(this); | |
170 | |
171 if (ash::Shell::GetInstance() && | |
172 ash::Shell::GetInstance()->user_activity_detector()->HasObserver(this)) | |
173 ash::Shell::GetInstance()->user_activity_detector()->RemoveObserver(this); | |
174 | |
175 ash::CloseScreensaver(); | |
176 screensaver_extension_id_ = ""; | |
177 } | |
178 | |
179 void ScreensaverController::RequestNextIdleNotification() { | |
180 DBusThreadManager::Get()->GetPowerManagerClient()-> | |
181 RequestIdleNotification(threshold_.InMilliseconds()); | |
182 } | |
183 | |
184 } // namespace chromeos | |
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