src/chrome/browser/apps/shortcut_manager.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 "chrome/browser/apps/shortcut_manager.h"
   6
   7 #include "base/bind.h"
   8 #include "base/command_line.h"
   9 #include "base/compiler_specific.h"
  10 #include "base/prefs/pref_service.h"
  11 #include "base/strings/string16.h"
  12 #include "base/strings/utf_string_conversions.h"
  13 #include "chrome/browser/browser_process.h"
  14 #include "chrome/browser/chrome_notification_types.h"
  15 #include "chrome/browser/extensions/extension_service.h"
  16 #include "chrome/browser/extensions/extension_system.h"
  17 #include "chrome/browser/profiles/profile.h"
  18 #include "chrome/browser/profiles/profile_info_cache.h"
  19 #include "chrome/browser/profiles/profile_manager.h"
  20 #include "chrome/browser/shell_integration.h"
  21 #include "chrome/browser/ui/web_applications/web_app_ui.h"
  22 #include "chrome/browser/web_applications/web_app.h"
  23 #include "chrome/common/chrome_switches.h"
  24 #include "chrome/common/pref_names.h"
  25 #include "components/user_prefs/pref_registry_syncable.h"
  26 #include "content/public/browser/browser_thread.h"
  27 #include "content/public/browser/notification_details.h"
  28 #include "content/public/browser/notification_source.h"
  29 #include "extensions/common/extension_set.h"
  30
  31 #if defined(OS_MACOSX)
  32 #include "apps/app_shim/app_shim_mac.h"
  33 #endif
  34
  35 using extensions::Extension;
  36
  37 namespace {
  38
  39 // Creates a shortcut for an application in the applications menu, if there is
  40 // not already one present.
  41 void CreateShortcutsInApplicationsMenu(
  42     const ShellIntegration::ShortcutInfo& shortcut_info) {
  43   ShellIntegration::ShortcutLocations creation_locations;
  44   // Create the shortcut in the Chrome Apps subdir.
  45   creation_locations.applications_menu_location =
  46       ShellIntegration::APP_MENU_LOCATION_SUBDIR_CHROMEAPPS;
  47   web_app::CreateShortcuts(shortcut_info, creation_locations,
  48                            web_app::SHORTCUT_CREATION_AUTOMATED);
  49 }
  50
  51 bool ShouldCreateShortcutFor(const extensions::Extension* extension) {
  52   return extension->is_platform_app() &&
  53       extension->location() != extensions::Manifest::COMPONENT &&
  54       extension->ShouldDisplayInAppLauncher();
  55 }
  56
  57 }  // namespace
  58
  59 // static
  60 void AppShortcutManager::RegisterProfilePrefs(
  61     user_prefs::PrefRegistrySyncable* registry) {
  62   // Indicates whether app shortcuts have been created.
  63   registry->RegisterBooleanPref(
  64       prefs::kAppShortcutsHaveBeenCreated, false,
  65       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
  66 }
  67
  68 AppShortcutManager::AppShortcutManager(Profile* profile)
  69     : profile_(profile),
  70       is_profile_info_cache_observer_(false),
  71       prefs_(profile->GetPrefs()),
  72       weak_factory_(this) {
  73   // Use of g_browser_process requires that we are either on the UI thread, or
  74   // there are no threads initialized (such as in unit tests).
  75   DCHECK(!content::BrowserThread::IsThreadInitialized(
  76              content::BrowserThread::UI) ||
  77          content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
  78
  79   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_INSTALLED,
  80                  content::Source<Profile>(profile_));
  81   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNINSTALLED,
  82                  content::Source<Profile>(profile_));
  83   // Wait for extensions to be ready before running OnceOffCreateShortcuts.
  84   registrar_.Add(this, chrome::NOTIFICATION_EXTENSIONS_READY,
  85                  content::Source<Profile>(profile_));
  86
  87   ProfileManager* profile_manager = g_browser_process->profile_manager();
  88   // profile_manager might be NULL in testing environments.
  89   if (profile_manager) {
  90     profile_manager->GetProfileInfoCache().AddObserver(this);
  91     is_profile_info_cache_observer_ = true;
  92   }
  93 }
  94
  95 AppShortcutManager::~AppShortcutManager() {
  96   if (g_browser_process && is_profile_info_cache_observer_) {
  97     ProfileManager* profile_manager = g_browser_process->profile_manager();
  98     // profile_manager might be NULL in testing environments or during shutdown.
  99     if (profile_manager)
 100       profile_manager->GetProfileInfoCache().RemoveObserver(this);
 101   }
 102 }
 103
 104 void AppShortcutManager::Observe(int type,
 105                                  const content::NotificationSource& source,
 106                                  const content::NotificationDetails& details) {
 107   switch (type) {
 108     case chrome::NOTIFICATION_EXTENSIONS_READY: {
 109       OnceOffCreateShortcuts();
 110       break;
 111     }
 112     case chrome::NOTIFICATION_EXTENSION_INSTALLED: {
 113 #if defined(OS_MACOSX)
 114       if (!apps::IsAppShimsEnabled())
 115         break;
 116 #endif  // defined(OS_MACOSX)
 117
 118       const extensions::InstalledExtensionInfo* installed_info =
 119           content::Details<const extensions::InstalledExtensionInfo>(details)
 120               .ptr();
 121       const Extension* extension = installed_info->extension;
 122       if (ShouldCreateShortcutFor(extension)) {
 123         // If the app is being updated, update any existing shortcuts but do not
 124         // create new ones. If it is being installed, automatically create a
 125         // shortcut in the applications menu (e.g., Start Menu).
 126         base::Callback<void(const ShellIntegration::ShortcutInfo&)>
 127             create_or_update;
 128         if (installed_info->is_update) {
 129           base::string16 old_title =
 130               base::UTF8ToUTF16(installed_info->old_name);
 131           create_or_update = base::Bind(&web_app::UpdateAllShortcuts,
 132                                         old_title);
 133         } else {
 134           create_or_update = base::Bind(&CreateShortcutsInApplicationsMenu);
 135         }
 136
 137         web_app::UpdateShortcutInfoAndIconForApp(*extension, profile_,
 138                                                  create_or_update);
 139       }
 140       break;
 141     }
 142     case chrome::NOTIFICATION_EXTENSION_UNINSTALLED: {
 143       const Extension* extension = content::Details<const Extension>(
 144           details).ptr();
 145       DeleteApplicationShortcuts(extension);
 146       break;
 147     }
 148     default:
 149       NOTREACHED();
 150   }
 151 }
 152
 153 void AppShortcutManager::OnProfileWillBeRemoved(
 154     const base::FilePath& profile_path) {
 155   if (profile_path != profile_->GetPath())
 156     return;
 157   content::BrowserThread::PostTask(
 158       content::BrowserThread::FILE, FROM_HERE,
 159       base::Bind(&web_app::internals::DeleteAllShortcutsForProfile,
 160                  profile_path));
 161 }
 162
 163 void AppShortcutManager::OnceOffCreateShortcuts() {
 164   bool was_enabled = prefs_->GetBoolean(prefs::kAppShortcutsHaveBeenCreated);
 165
 166   // Creation of shortcuts on Mac currently can be disabled with
 167   // --disable-app-shims, so check the flag, and set the pref accordingly.
 168 #if defined(OS_MACOSX)
 169   bool is_now_enabled = apps::IsAppShimsEnabled();
 170 #else
 171   bool is_now_enabled = true;
 172 #endif  // defined(OS_MACOSX)
 173
 174   if (was_enabled != is_now_enabled)
 175     prefs_->SetBoolean(prefs::kAppShortcutsHaveBeenCreated, is_now_enabled);
 176
 177   if (was_enabled || !is_now_enabled)
 178     return;
 179
 180   // Check if extension system/service are available. They might not be in
 181   // tests.
 182   extensions::ExtensionSystem* extension_system;
 183   ExtensionServiceInterface* extension_service;
 184   if (!(extension_system = extensions::ExtensionSystem::Get(profile_)) ||
 185       !(extension_service = extension_system->extension_service()))
 186     return;
 187
 188   // Create an applications menu shortcut for each app in this profile.
 189   const extensions::ExtensionSet* apps = extension_service->extensions();
 190   for (extensions::ExtensionSet::const_iterator it = apps->begin();
 191        it != apps->end(); ++it) {
 192     if (ShouldCreateShortcutFor(it->get()))
 193       web_app::UpdateShortcutInfoAndIconForApp(
 194           *it->get(), profile_, base::Bind(&CreateShortcutsInApplicationsMenu));
 195   }
 196 }
 197
 198 void AppShortcutManager::DeleteApplicationShortcuts(
 199     const Extension* extension) {
 200   ShellIntegration::ShortcutInfo delete_info =
 201       web_app::ShortcutInfoForExtensionAndProfile(extension, profile_);
 202   web_app::DeleteAllShortcuts(delete_info);
 203 }