shortcut_manager.cc revision 23730a6e56a168d1879203e4b3819bb36e3d8f1f 
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/profiles/profile.h"
17#include "chrome/browser/profiles/profile_info_cache.h"
18#include "chrome/browser/profiles/profile_manager.h"
19#include "chrome/browser/shell_integration.h"
20#include "chrome/browser/ui/web_applications/web_app_ui.h"
21#include "chrome/browser/web_applications/web_app.h"
22#include "chrome/common/chrome_switches.h"
23#include "chrome/common/pref_names.h"
24#include "components/user_prefs/pref_registry_syncable.h"
25#include "content/public/browser/browser_thread.h"
26#include "content/public/browser/notification_details.h"
27#include "content/public/browser/notification_source.h"
28#include "extensions/browser/extension_system.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
35using extensions::Extension;
36
37namespace {
38
39// Creates a shortcut for an application in the applications menu, if there is
40// not already one present.
41void 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
51bool 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
60void 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
68AppShortcutManager::AppShortcutManager(Profile* profile)
69    : profile_(profile),
70      is_profile_info_cache_observer_(false),
71      prefs_(profile->GetPrefs()) {
72  // Use of g_browser_process requires that we are either on the UI thread, or
73  // there are no threads initialized (such as in unit tests).
74  DCHECK(!content::BrowserThread::IsThreadInitialized(
75             content::BrowserThread::UI) ||
76         content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
77
78  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_INSTALLED,
79                 content::Source<Profile>(profile_));
80  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNINSTALLED,
81                 content::Source<Profile>(profile_));
82  // Wait for extensions to be ready before running OnceOffCreateShortcuts.
83  registrar_.Add(this, chrome::NOTIFICATION_EXTENSIONS_READY,
84                 content::Source<Profile>(profile_));
85
86  ProfileManager* profile_manager = g_browser_process->profile_manager();
87  // profile_manager might be NULL in testing environments.
88  if (profile_manager) {
89    profile_manager->GetProfileInfoCache().AddObserver(this);
90    is_profile_info_cache_observer_ = true;
91  }
92}
93
94AppShortcutManager::~AppShortcutManager() {
95  if (g_browser_process && is_profile_info_cache_observer_) {
96    ProfileManager* profile_manager = g_browser_process->profile_manager();
97    // profile_manager might be NULL in testing environments or during shutdown.
98    if (profile_manager)
99      profile_manager->GetProfileInfoCache().RemoveObserver(this);
100  }
101}
102
103void AppShortcutManager::Observe(int type,
104                                 const content::NotificationSource& source,
105                                 const content::NotificationDetails& details) {
106  switch (type) {
107    case chrome::NOTIFICATION_EXTENSIONS_READY: {
108      OnceOffCreateShortcuts();
109      break;
110    }
111    case chrome::NOTIFICATION_EXTENSION_INSTALLED: {
112#if defined(OS_MACOSX)
113      if (!apps::IsAppShimsEnabled())
114        break;
115#endif  // defined(OS_MACOSX)
116
117      const extensions::InstalledExtensionInfo* installed_info =
118          content::Details<const extensions::InstalledExtensionInfo>(details)
119              .ptr();
120      const Extension* extension = installed_info->extension;
121      // If the app is being updated, update any existing shortcuts but do not
122      // create new ones. If it is being installed, automatically create a
123      // shortcut in the applications menu (e.g., Start Menu).
124      base::Callback<void(const ShellIntegration::ShortcutInfo&)>
125          create_or_update;
126      if (installed_info->is_update) {
127        base::string16 old_title =
128            base::UTF8ToUTF16(installed_info->old_name);
129        create_or_update = base::Bind(&web_app::UpdateAllShortcuts,
130                                      old_title);
131      } else if (ShouldCreateShortcutFor(extension)) {
132        create_or_update = base::Bind(&CreateShortcutsInApplicationsMenu);
133      }
134      if (!create_or_update.is_null()) {
135        web_app::UpdateShortcutInfoAndIconForApp(*extension, profile_,
136                                                 create_or_update);
137      }
138      break;
139    }
140    case chrome::NOTIFICATION_EXTENSION_UNINSTALLED: {
141      const Extension* extension = content::Details<const Extension>(
142          details).ptr();
143      DeleteApplicationShortcuts(extension);
144      break;
145    }
146    default:
147      NOTREACHED();
148  }
149}
150
151void AppShortcutManager::OnProfileWillBeRemoved(
152    const base::FilePath& profile_path) {
153  if (profile_path != profile_->GetPath())
154    return;
155  content::BrowserThread::PostTask(
156      content::BrowserThread::FILE, FROM_HERE,
157      base::Bind(&web_app::internals::DeleteAllShortcutsForProfile,
158                 profile_path));
159}
160
161void AppShortcutManager::OnceOffCreateShortcuts() {
162  bool was_enabled = prefs_->GetBoolean(prefs::kAppShortcutsHaveBeenCreated);
163
164  // Creation of shortcuts on Mac currently can be disabled with
165  // --disable-app-shims, so check the flag, and set the pref accordingly.
166#if defined(OS_MACOSX)
167  bool is_now_enabled = apps::IsAppShimsEnabled();
168#else
169  bool is_now_enabled = true;
170#endif  // defined(OS_MACOSX)
171
172  if (was_enabled != is_now_enabled)
173    prefs_->SetBoolean(prefs::kAppShortcutsHaveBeenCreated, is_now_enabled);
174
175  if (was_enabled || !is_now_enabled)
176    return;
177
178  // Check if extension system/service are available. They might not be in
179  // tests.
180  extensions::ExtensionSystem* extension_system;
181  ExtensionServiceInterface* extension_service;
182  if (!(extension_system = extensions::ExtensionSystem::Get(profile_)) ||
183      !(extension_service = extension_system->extension_service()))
184    return;
185
186  // Create an applications menu shortcut for each app in this profile.
187  const extensions::ExtensionSet* apps = extension_service->extensions();
188  for (extensions::ExtensionSet::const_iterator it = apps->begin();
189       it != apps->end(); ++it) {
190    if (ShouldCreateShortcutFor(it->get()))
191      web_app::UpdateShortcutInfoAndIconForApp(
192          *it->get(), profile_, base::Bind(&CreateShortcutsInApplicationsMenu));
193  }
194}
195
196void AppShortcutManager::DeleteApplicationShortcuts(
197    const Extension* extension) {
198  ShellIntegration::ShortcutInfo delete_info =
199      web_app::ShortcutInfoForExtensionAndProfile(extension, profile_);
200  web_app::DeleteAllShortcuts(delete_info);
201}
202