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