apps/app_lifetime_monitor.cc

   1 // Copyright 2013 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 "apps/app_lifetime_monitor.h"
   6
   7 #include "apps/app_window.h"
   8 #include "chrome/browser/chrome_notification_types.h"
   9 #include "chrome/browser/profiles/profile.h"
  10 #include "content/public/browser/notification_details.h"
  11 #include "content/public/browser/notification_service.h"
  12 #include "extensions/browser/extension_host.h"
  13 #include "extensions/common/extension.h"
  14
  15 namespace apps {
  16
  17 using extensions::Extension;
  18 using extensions::ExtensionHost;
  19
  20 AppLifetimeMonitor::AppLifetimeMonitor(Profile* profile)
  21     : profile_(profile) {
  22   registrar_.Add(
  23       this, chrome::NOTIFICATION_EXTENSION_HOST_DID_STOP_LOADING,
  24       content::NotificationService::AllSources());
  25   registrar_.Add(
  26       this, chrome::NOTIFICATION_EXTENSION_HOST_DESTROYED,
  27       content::NotificationService::AllSources());
  28   registrar_.Add(
  29       this, chrome::NOTIFICATION_APP_TERMINATING,
  30       content::NotificationService::AllSources());
  31
  32   AppWindowRegistry* app_window_registry =
  33       AppWindowRegistry::Factory::GetForBrowserContext(profile_,
  34                                                        false /* create */);
  35   DCHECK(app_window_registry);
  36   app_window_registry->AddObserver(this);
  37 }
  38
  39 AppLifetimeMonitor::~AppLifetimeMonitor() {}
  40
  41 void AppLifetimeMonitor::AddObserver(Observer* observer) {
  42   observers_.AddObserver(observer);
  43 }
  44
  45 void AppLifetimeMonitor::RemoveObserver(Observer* observer) {
  46   observers_.RemoveObserver(observer);
  47 }
  48
  49 void AppLifetimeMonitor::Observe(int type,
  50                                 const content::NotificationSource& source,
  51                                 const content::NotificationDetails& details) {
  52   switch (type) {
  53     case chrome::NOTIFICATION_EXTENSION_HOST_DID_STOP_LOADING: {
  54       ExtensionHost* host = content::Details<ExtensionHost>(details).ptr();
  55       const Extension* extension = host->extension();
  56       if (!extension || !extension->is_platform_app())
  57         return;
  58
  59       NotifyAppStart(extension->id());
  60       break;
  61     }
  62
  63     case chrome::NOTIFICATION_EXTENSION_HOST_DESTROYED: {
  64       ExtensionHost* host = content::Details<ExtensionHost>(details).ptr();
  65       const Extension* extension = host->extension();
  66       if (!extension || !extension->is_platform_app())
  67         return;
  68
  69       NotifyAppStop(extension->id());
  70       break;
  71     }
  72
  73     case chrome::NOTIFICATION_APP_TERMINATING: {
  74       NotifyChromeTerminating();
  75       break;
  76     }
  77   }
  78 }
  79
  80 void AppLifetimeMonitor::OnAppWindowRemoved(AppWindow* app_window) {
  81   if (!HasVisibleAppWindows(app_window))
  82     NotifyAppDeactivated(app_window->extension_id());
  83 }
  84
  85 void AppLifetimeMonitor::OnAppWindowHidden(AppWindow* app_window) {
  86   if (!HasVisibleAppWindows(app_window))
  87     NotifyAppDeactivated(app_window->extension_id());
  88 }
  89
  90 void AppLifetimeMonitor::OnAppWindowShown(AppWindow* app_window) {
  91   if (app_window->window_type() != AppWindow::WINDOW_TYPE_DEFAULT)
  92     return;
  93
  94   if (HasVisibleAppWindows(app_window))
  95     NotifyAppActivated(app_window->extension_id());
  96 }
  97
  98 void AppLifetimeMonitor::Shutdown() {
  99   AppWindowRegistry* app_window_registry =
 100       AppWindowRegistry::Factory::GetForBrowserContext(profile_,
 101                                                        false /* create */);
 102   if (app_window_registry)
 103     app_window_registry->RemoveObserver(this);
 104 }
 105
 106 bool AppLifetimeMonitor::HasVisibleAppWindows(AppWindow* app_window) const {
 107   AppWindowRegistry::AppWindowList windows =
 108       AppWindowRegistry::Get(app_window->browser_context())
 109           ->GetAppWindowsForApp(app_window->extension_id());
 110
 111   for (AppWindowRegistry::AppWindowList::const_iterator i = windows.begin();
 112        i != windows.end();
 113        ++i) {
 114     if (!(*i)->is_hidden())
 115       return true;
 116   }
 117   return false;
 118 }
 119
 120 void AppLifetimeMonitor::NotifyAppStart(const std::string& app_id) {
 121   FOR_EACH_OBSERVER(Observer, observers_, OnAppStart(profile_, app_id));
 122 }
 123
 124 void AppLifetimeMonitor::NotifyAppActivated(const std::string& app_id) {
 125   FOR_EACH_OBSERVER(Observer, observers_, OnAppActivated(profile_, app_id));
 126 }
 127
 128 void AppLifetimeMonitor::NotifyAppDeactivated(const std::string& app_id) {
 129   FOR_EACH_OBSERVER(Observer, observers_, OnAppDeactivated(profile_, app_id));
 130 }
 131
 132 void AppLifetimeMonitor::NotifyAppStop(const std::string& app_id) {
 133   FOR_EACH_OBSERVER(Observer, observers_, OnAppStop(profile_, app_id));
 134 }
 135
 136 void AppLifetimeMonitor::NotifyChromeTerminating() {
 137   FOR_EACH_OBSERVER(Observer, observers_, OnChromeTerminating());
 138 }
 139
 140 }  // namespace apps