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/shell_window.h"
   8 #include "chrome/browser/chrome_notification_types.h"
   9 #include "chrome/browser/extensions/extension_host.h"
  10 #include "chrome/browser/profiles/profile.h"
  11 #include "chrome/common/extensions/extension.h"
  12 #include "content/public/browser/notification_details.h"
  13 #include "content/public/browser/notification_service.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   ShellWindowRegistry* shell_window_registry =
  33       ShellWindowRegistry::Factory::GetForBrowserContext(
  34           profile_, false /* create */);
  35   DCHECK(shell_window_registry);
  36   shell_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::OnShellWindowAdded(ShellWindow* shell_window) {
  81   if (shell_window->window_type() != ShellWindow::WINDOW_TYPE_DEFAULT)
  82     return;
  83
  84   ShellWindowRegistry::ShellWindowList windows =
  85       ShellWindowRegistry::Get(shell_window->profile())->
  86           GetShellWindowsForApp(shell_window->extension_id());
  87   if (windows.size() == 1)
  88     NotifyAppActivated(shell_window->extension_id());
  89 }
  90
  91 void AppLifetimeMonitor::OnShellWindowIconChanged(ShellWindow* shell_window) {}
  92
  93 void AppLifetimeMonitor::OnShellWindowRemoved(ShellWindow* shell_window) {
  94   ShellWindowRegistry::ShellWindowList windows =
  95       ShellWindowRegistry::Get(shell_window->profile())->
  96           GetShellWindowsForApp(shell_window->extension_id());
  97   if (windows.empty())
  98     NotifyAppDeactivated(shell_window->extension_id());
  99 }
 100
 101 void AppLifetimeMonitor::Shutdown() {
 102   ShellWindowRegistry* shell_window_registry =
 103       ShellWindowRegistry::Factory::GetForBrowserContext(
 104           profile_, false /* create */);
 105   if (shell_window_registry)
 106     shell_window_registry->RemoveObserver(this);
 107 }
 108
 109 void AppLifetimeMonitor::NotifyAppStart(const std::string& app_id) {
 110   FOR_EACH_OBSERVER(Observer, observers_, OnAppStart(profile_, app_id));
 111 }
 112
 113 void AppLifetimeMonitor::NotifyAppActivated(const std::string& app_id) {
 114   FOR_EACH_OBSERVER(Observer, observers_, OnAppActivated(profile_, app_id));
 115 }
 116
 117 void AppLifetimeMonitor::NotifyAppDeactivated(const std::string& app_id) {
 118   FOR_EACH_OBSERVER(Observer, observers_, OnAppDeactivated(profile_, app_id));
 119 }
 120
 121 void AppLifetimeMonitor::NotifyAppStop(const std::string& app_id) {
 122   FOR_EACH_OBSERVER(Observer, observers_, OnAppStop(profile_, app_id));
 123 }
 124
 125 void AppLifetimeMonitor::NotifyChromeTerminating() {
 126   FOR_EACH_OBSERVER(Observer, observers_, OnChromeTerminating());
 127 }
 128
 129 }  // namespace apps