background_mode_manager.cc revision 8bcbed890bc3ce4d7a057a8f32cab53fa534672e 
1// Copyright (c) 2012 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 <algorithm>
6#include <string>
7#include <vector>
8
9#include "base/base_paths.h"
10#include "base/bind.h"
11#include "base/command_line.h"
12#include "base/logging.h"
13#include "base/prefs/pref_registry_simple.h"
14#include "base/prefs/pref_service.h"
15#include "base/strings/utf_string_conversions.h"
16#include "chrome/app/chrome_command_ids.h"
17#include "chrome/browser/background/background_application_list_model.h"
18#include "chrome/browser/background/background_mode_manager.h"
19#include "chrome/browser/browser_process.h"
20#include "chrome/browser/browser_shutdown.h"
21#include "chrome/browser/chrome_notification_types.h"
22#include "chrome/browser/extensions/extension_service.h"
23#include "chrome/browser/extensions/extension_system.h"
24#include "chrome/browser/lifetime/application_lifetime.h"
25#include "chrome/browser/profiles/profile.h"
26#include "chrome/browser/profiles/profile_info_cache.h"
27#include "chrome/browser/profiles/profile_manager.h"
28#include "chrome/browser/status_icons/status_icon.h"
29#include "chrome/browser/status_icons/status_tray.h"
30#include "chrome/browser/ui/browser.h"
31#include "chrome/browser/ui/browser_commands.h"
32#include "chrome/browser/ui/browser_finder.h"
33#include "chrome/browser/ui/chrome_pages.h"
34#include "chrome/browser/ui/extensions/application_launch.h"
35#include "chrome/browser/ui/host_desktop.h"
36#include "chrome/common/chrome_constants.h"
37#include "chrome/common/chrome_switches.h"
38#include "chrome/common/extensions/extension.h"
39#include "chrome/common/extensions/extension_constants.h"
40#include "chrome/common/extensions/permissions/permission_set.h"
41#include "chrome/common/pref_names.h"
42#include "content/public/browser/notification_service.h"
43#include "content/public/browser/user_metrics.h"
44#include "grit/chrome_unscaled_resources.h"
45#include "grit/chromium_strings.h"
46#include "grit/generated_resources.h"
47#include "ui/base/l10n/l10n_util.h"
48#include "ui/base/resource/resource_bundle.h"
49
50using content::UserMetricsAction;
51using extensions::Extension;
52using extensions::UpdatedExtensionPermissionsInfo;
53
54BackgroundModeManager::BackgroundModeData::BackgroundModeData(
55    int command_id,
56    Profile* profile)
57    : applications_(new BackgroundApplicationListModel(profile)),
58      command_id_(command_id),
59      profile_(profile) {
60}
61
62BackgroundModeManager::BackgroundModeData::~BackgroundModeData() {
63}
64
65///////////////////////////////////////////////////////////////////////////////
66//  BackgroundModeManager::BackgroundModeData, StatusIconMenuModel overrides
67void BackgroundModeManager::BackgroundModeData::ExecuteCommand(
68    int item,
69    int event_flags) {
70  switch (item) {
71    case IDC_MinimumLabelValue:
72      // Do nothing. This is just a label.
73      break;
74    default:
75      // Launch the app associated with this item.
76      const Extension* extension = applications_->
77          GetExtension(item);
78      BackgroundModeManager::LaunchBackgroundApplication(profile_, extension);
79      break;
80  }
81}
82
83Browser* BackgroundModeManager::BackgroundModeData::GetBrowserWindow() {
84  chrome::HostDesktopType host_desktop_type = chrome::GetActiveDesktop();
85  Browser* browser = chrome::FindLastActiveWithProfile(profile_,
86                                                       host_desktop_type);
87  return browser ? browser : chrome::OpenEmptyWindow(profile_,
88                                                     host_desktop_type);
89}
90
91int BackgroundModeManager::BackgroundModeData::GetBackgroundAppCount() const {
92  return applications_->size();
93}
94
95void BackgroundModeManager::BackgroundModeData::BuildProfileMenu(
96    StatusIconMenuModel* menu,
97    StatusIconMenuModel* containing_menu) {
98  int position = 0;
99  // When there are no background applications, we want to display
100  // just a label stating that none are running.
101  if (applications_->size() < 1) {
102    menu->AddItemWithStringId(IDC_MinimumLabelValue,
103                              IDS_BACKGROUND_APP_NOT_INSTALLED);
104    menu->SetCommandIdEnabled(IDC_MinimumLabelValue, false);
105  } else {
106    for (extensions::ExtensionList::const_iterator cursor =
107             applications_->begin();
108         cursor != applications_->end();
109         ++cursor, ++position) {
110      const gfx::ImageSkia* icon = applications_->GetIcon(cursor->get());
111      DCHECK(position == applications_->GetPosition(cursor->get()));
112      const std::string& name = (*cursor)->name();
113      menu->AddItem(position, UTF8ToUTF16(name));
114      if (icon)
115        menu->SetIcon(menu->GetItemCount() - 1, gfx::Image(*icon));
116    }
117  }
118  if (containing_menu)
119    containing_menu->AddSubMenu(command_id_, name_, menu);
120}
121
122void BackgroundModeManager::BackgroundModeData::SetName(
123    const string16& new_profile_name) {
124  name_ = new_profile_name;
125}
126
127string16 BackgroundModeManager::BackgroundModeData::name() {
128  return name_;
129}
130
131// static
132bool BackgroundModeManager::BackgroundModeData::BackgroundModeDataCompare(
133    const BackgroundModeData* bmd1,
134    const BackgroundModeData* bmd2) {
135  return bmd1->name_ < bmd2->name_;
136}
137
138
139///////////////////////////////////////////////////////////////////////////////
140//  BackgroundModeManager, public
141BackgroundModeManager::BackgroundModeManager(
142    CommandLine* command_line,
143    ProfileInfoCache* profile_cache)
144    : profile_cache_(profile_cache),
145      status_tray_(NULL),
146      status_icon_(NULL),
147      context_menu_(NULL),
148      in_background_mode_(false),
149      keep_alive_for_startup_(false),
150      keep_alive_for_test_(false),
151      current_command_id_(0) {
152  // We should never start up if there is no browser process or if we are
153  // currently quitting.
154  CHECK(g_browser_process != NULL);
155  CHECK(!browser_shutdown::IsTryingToQuit());
156
157  // Add self as an observer for the profile info cache so we know when profiles
158  // are deleted and their names change.
159  profile_cache_->AddObserver(this);
160
161  // Listen for the background mode preference changing.
162  if (g_browser_process->local_state()) {  // Skip for unit tests
163    pref_registrar_.Init(g_browser_process->local_state());
164    pref_registrar_.Add(
165        prefs::kBackgroundModeEnabled,
166        base::Bind(&BackgroundModeManager::OnBackgroundModeEnabledPrefChanged,
167                   base::Unretained(this)));
168  }
169
170  // Keep the browser alive until extensions are done loading - this is needed
171  // by the --no-startup-window flag. We want to stay alive until we load
172  // extensions, at which point we should either run in background mode (if
173  // there are background apps) or exit if there are none.
174  if (command_line->HasSwitch(switches::kNoStartupWindow)) {
175    keep_alive_for_startup_ = true;
176    chrome::StartKeepAlive();
177  }
178
179  // If the -keep-alive-for-test flag is passed, then always keep chrome running
180  // in the background until the user explicitly terminates it.
181  if (command_line->HasSwitch(switches::kKeepAliveForTest))
182    keep_alive_for_test_ = true;
183
184  if (ShouldBeInBackgroundMode())
185    StartBackgroundMode();
186
187  // Listen for the application shutting down so we can decrement our KeepAlive
188  // count.
189  registrar_.Add(this, chrome::NOTIFICATION_APP_TERMINATING,
190                 content::NotificationService::AllSources());
191}
192
193BackgroundModeManager::~BackgroundModeManager() {
194  // Remove ourselves from the application observer list (only needed by unit
195  // tests since APP_TERMINATING is what does this in a real running system).
196  for (BackgroundModeInfoMap::iterator it =
197       background_mode_data_.begin();
198       it != background_mode_data_.end();
199       ++it) {
200    it->second->applications_->RemoveObserver(this);
201  }
202
203  // We're going away, so exit background mode (does nothing if we aren't in
204  // background mode currently). This is primarily needed for unit tests,
205  // because in an actual running system we'd get an APP_TERMINATING
206  // notification before being destroyed.
207  EndBackgroundMode();
208}
209
210// static
211void BackgroundModeManager::RegisterPrefs(PrefRegistrySimple* registry) {
212#if defined(OS_MACOSX)
213  registry->RegisterBooleanPref(prefs::kUserRemovedLoginItem, false);
214  registry->RegisterBooleanPref(prefs::kChromeCreatedLoginItem, false);
215  registry->RegisterBooleanPref(prefs::kMigratedLoginItemPref, false);
216#endif
217  registry->RegisterBooleanPref(prefs::kBackgroundModeEnabled, true);
218}
219
220
221void BackgroundModeManager::RegisterProfile(Profile* profile) {
222  // We don't want to register multiple times for one profile.
223  DCHECK(background_mode_data_.find(profile) == background_mode_data_.end());
224  BackgroundModeInfo bmd(new BackgroundModeData(current_command_id_++,
225                                                profile));
226  background_mode_data_[profile] = bmd;
227
228  // Initially set the name for this background mode data.
229  size_t index = profile_cache_->GetIndexOfProfileWithPath(profile->GetPath());
230  string16 name = l10n_util::GetStringUTF16(IDS_PROFILES_DEFAULT_NAME);
231  if (index != std::string::npos)
232    name = profile_cache_->GetNameOfProfileAtIndex(index);
233  bmd->SetName(name);
234
235  // Listen for when extensions are loaded or add the background permission so
236  // we can display a "background app installed" notification and enter
237  // "launch on login" mode on the Mac.
238  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_LOADED,
239                 content::Source<Profile>(profile));
240  registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_PERMISSIONS_UPDATED,
241                 content::Source<Profile>(profile));
242
243
244  // Check for the presence of background apps after all extensions have been
245  // loaded, to handle the case where an extension has been manually removed
246  // while Chrome was not running.
247  registrar_.Add(this, chrome::NOTIFICATION_EXTENSIONS_READY,
248                 content::Source<Profile>(profile));
249
250  bmd->applications_->AddObserver(this);
251
252  // If we're adding a new profile and running in multi-profile mode, this new
253  // profile should be added to the status icon if one currently exists.
254  if (in_background_mode_ && status_icon_)
255    UpdateStatusTrayIconContextMenu();
256}
257
258// static
259void BackgroundModeManager::LaunchBackgroundApplication(
260    Profile* profile,
261    const Extension* extension) {
262  OpenApplication(AppLaunchParams(profile, extension, NEW_FOREGROUND_TAB));
263}
264
265bool BackgroundModeManager::IsBackgroundModeActive() {
266  return in_background_mode_;
267}
268
269int BackgroundModeManager::NumberOfBackgroundModeData() {
270  return background_mode_data_.size();
271}
272
273///////////////////////////////////////////////////////////////////////////////
274//  BackgroundModeManager, content::NotificationObserver overrides
275void BackgroundModeManager::Observe(
276    int type,
277    const content::NotificationSource& source,
278    const content::NotificationDetails& details) {
279  switch (type) {
280    case chrome::NOTIFICATION_EXTENSIONS_READY:
281      // Extensions are loaded, so we don't need to manually keep the browser
282      // process alive any more when running in no-startup-window mode.
283      EndKeepAliveForStartup();
284      break;
285
286    case chrome::NOTIFICATION_EXTENSION_LOADED: {
287        Extension* extension = content::Details<Extension>(details).ptr();
288        Profile* profile = content::Source<Profile>(source).ptr();
289        if (BackgroundApplicationListModel::IsBackgroundApp(
290                *extension, profile)) {
291          // Extensions loaded after the ExtensionsService is ready should be
292          // treated as new installs.
293          if (extensions::ExtensionSystem::Get(profile)->extension_service()->
294                  is_ready()) {
295            bool is_being_reloaded = false;
296            CheckReloadStatus(extension, &is_being_reloaded);
297            // No need to show the notification if we showed to the user
298            // previously for this app.
299            if (!is_being_reloaded)
300              OnBackgroundAppInstalled(extension);
301          }
302        }
303      }
304      break;
305    case chrome::NOTIFICATION_EXTENSION_PERMISSIONS_UPDATED: {
306        UpdatedExtensionPermissionsInfo* info =
307            content::Details<UpdatedExtensionPermissionsInfo>(details).ptr();
308        if (info->permissions->HasAPIPermission(
309                extensions::APIPermission::kBackground) &&
310            info->reason == UpdatedExtensionPermissionsInfo::ADDED) {
311          // Turned on background permission, so treat this as a new install.
312          OnBackgroundAppInstalled(info->extension);
313        }
314      }
315      break;
316    case chrome::NOTIFICATION_APP_TERMINATING:
317      // Make sure we aren't still keeping the app alive (only happens if we
318      // don't receive an EXTENSIONS_READY notification for some reason).
319      EndKeepAliveForStartup();
320      // Performing an explicit shutdown, so exit background mode (does nothing
321      // if we aren't in background mode currently).
322      EndBackgroundMode();
323      // Shutting down, so don't listen for any more notifications so we don't
324      // try to re-enter/exit background mode again.
325      registrar_.RemoveAll();
326      for (BackgroundModeInfoMap::iterator it =
327               background_mode_data_.begin();
328           it != background_mode_data_.end();
329           ++it) {
330        it->second->applications_->RemoveObserver(this);
331      }
332      break;
333    default:
334      NOTREACHED();
335      break;
336  }
337}
338
339void BackgroundModeManager::OnBackgroundModeEnabledPrefChanged() {
340  if (IsBackgroundModePrefEnabled())
341    EnableBackgroundMode();
342  else
343    DisableBackgroundMode();
344}
345
346///////////////////////////////////////////////////////////////////////////////
347//  BackgroundModeManager, BackgroundApplicationListModel::Observer overrides
348void BackgroundModeManager::OnApplicationDataChanged(
349    const Extension* extension, Profile* profile) {
350  UpdateStatusTrayIconContextMenu();
351}
352
353void BackgroundModeManager::OnApplicationListChanged(Profile* profile) {
354  if (!IsBackgroundModePrefEnabled())
355    return;
356
357  // Update the profile cache with the fact whether background apps are running
358  // for this profile.
359  size_t profile_index = profile_cache_->GetIndexOfProfileWithPath(
360      profile->GetPath());
361  if (profile_index != std::string::npos) {
362    profile_cache_->SetBackgroundStatusOfProfileAtIndex(
363        profile_index, GetBackgroundAppCountForProfile(profile) != 0);
364  }
365
366  if (!ShouldBeInBackgroundMode()) {
367    // We've uninstalled our last background app, make sure we exit background
368    // mode and no longer launch on startup.
369    EnableLaunchOnStartup(false);
370    EndBackgroundMode();
371  } else {
372    // We have at least one background app running - make sure we're in
373    // background mode.
374    if (!in_background_mode_) {
375      // We're entering background mode - make sure we have launch-on-startup
376      // enabled. On Mac, the platform-specific code tracks whether the user
377      // has deleted a login item in the past, and if so, no login item will
378      // be created (to avoid overriding the specific user action).
379      EnableLaunchOnStartup(true);
380
381      StartBackgroundMode();
382    }
383    // List of applications changed so update the UI.
384    UpdateStatusTrayIconContextMenu();
385  }
386}
387
388///////////////////////////////////////////////////////////////////////////////
389//  BackgroundModeManager, ProfileInfoCacheObserver overrides
390void BackgroundModeManager::OnProfileAdded(const base::FilePath& profile_path) {
391  ProfileInfoCache& cache =
392      g_browser_process->profile_manager()->GetProfileInfoCache();
393  string16 profile_name = cache.GetNameOfProfileAtIndex(
394      cache.GetIndexOfProfileWithPath(profile_path));
395  // At this point, the profile should be registered with the background mode
396  // manager, but when it's actually added to the cache is when its name is
397  // set so we need up to update that with the background_mode_data.
398  for (BackgroundModeInfoMap::const_iterator it =
399       background_mode_data_.begin();
400       it != background_mode_data_.end();
401       ++it) {
402    if (it->first->GetPath() == profile_path) {
403      it->second->SetName(profile_name);
404      UpdateStatusTrayIconContextMenu();
405      return;
406    }
407  }
408}
409
410void BackgroundModeManager::OnProfileWillBeRemoved(
411    const base::FilePath& profile_path) {
412  ProfileInfoCache& cache =
413      g_browser_process->profile_manager()->GetProfileInfoCache();
414  string16 profile_name = cache.GetNameOfProfileAtIndex(
415      cache.GetIndexOfProfileWithPath(profile_path));
416  // Remove the profile from our map of profiles.
417  BackgroundModeInfoMap::iterator it =
418      GetBackgroundModeIterator(profile_name);
419  // If a profile isn't running a background app, it may not be in the map.
420  if (it != background_mode_data_.end()) {
421    background_mode_data_.erase(it);
422    UpdateStatusTrayIconContextMenu();
423  }
424}
425
426void BackgroundModeManager::OnProfileNameChanged(
427    const base::FilePath& profile_path,
428    const string16& old_profile_name) {
429  ProfileInfoCache& cache =
430      g_browser_process->profile_manager()->GetProfileInfoCache();
431  string16 new_profile_name = cache.GetNameOfProfileAtIndex(
432      cache.GetIndexOfProfileWithPath(profile_path));
433  BackgroundModeInfoMap::const_iterator it =
434      GetBackgroundModeIterator(old_profile_name);
435  // We check that the returned iterator is valid due to unittests, but really
436  // this should only be called on profiles already known by the background
437  // mode manager.
438  if (it != background_mode_data_.end()) {
439    it->second->SetName(new_profile_name);
440    UpdateStatusTrayIconContextMenu();
441  }
442}
443
444///////////////////////////////////////////////////////////////////////////////
445//  BackgroundModeManager::BackgroundModeData, StatusIconMenuModel overrides
446void BackgroundModeManager::ExecuteCommand(int command_id, int event_flags) {
447  // When a browser window is necessary, we use the first profile. The windows
448  // opened for these commands are not profile-specific, so any profile would
449  // work and the first is convenient.
450  BackgroundModeData* bmd = background_mode_data_.begin()->second.get();
451  switch (command_id) {
452    case IDC_ABOUT:
453      chrome::ShowAboutChrome(bmd->GetBrowserWindow());
454      break;
455    case IDC_TASK_MANAGER:
456      chrome::OpenTaskManager(bmd->GetBrowserWindow());
457      break;
458    case IDC_EXIT:
459      content::RecordAction(UserMetricsAction("Exit"));
460      chrome::AttemptExit();
461      break;
462    case IDC_STATUS_TRAY_KEEP_CHROME_RUNNING_IN_BACKGROUND: {
463      // Background mode must already be enabled (as otherwise this menu would
464      // not be visible).
465      DCHECK(IsBackgroundModePrefEnabled());
466      DCHECK(chrome::WillKeepAlive());
467
468      // Set the background mode pref to "disabled" - the resulting notification
469      // will result in a call to DisableBackgroundMode().
470      PrefService* service = g_browser_process->local_state();
471      DCHECK(service);
472      service->SetBoolean(prefs::kBackgroundModeEnabled, false);
473      break;
474    }
475    default:
476      bmd->ExecuteCommand(command_id, event_flags);
477      break;
478  }
479}
480
481
482///////////////////////////////////////////////////////////////////////////////
483//  BackgroundModeManager, private
484void BackgroundModeManager::EndKeepAliveForStartup() {
485  if (keep_alive_for_startup_) {
486    keep_alive_for_startup_ = false;
487    // We call this via the message queue to make sure we don't try to end
488    // keep-alive (which can shutdown Chrome) before the message loop has
489    // started.
490    base::MessageLoop::current()->PostTask(FROM_HERE,
491                                           base::Bind(&chrome::EndKeepAlive));
492  }
493}
494
495void BackgroundModeManager::StartBackgroundMode() {
496  DCHECK(ShouldBeInBackgroundMode());
497  // Don't bother putting ourselves in background mode if we're already there
498  // or if background mode is disabled.
499  if (in_background_mode_)
500    return;
501
502  // Mark ourselves as running in background mode.
503  in_background_mode_ = true;
504
505  // Put ourselves in KeepAlive mode and create a status tray icon.
506  chrome::StartKeepAlive();
507
508  // Display a status icon to exit Chrome.
509  InitStatusTrayIcon();
510
511  content::NotificationService::current()->Notify(
512      chrome::NOTIFICATION_BACKGROUND_MODE_CHANGED,
513      content::Source<BackgroundModeManager>(this),
514      content::Details<bool>(&in_background_mode_));
515}
516
517void BackgroundModeManager::InitStatusTrayIcon() {
518  // Only initialize status tray icons for those profiles which actually
519  // have a background app running.
520  if (ShouldBeInBackgroundMode())
521    CreateStatusTrayIcon();
522}
523
524void BackgroundModeManager::EndBackgroundMode() {
525  if (!in_background_mode_)
526    return;
527  in_background_mode_ = false;
528
529  // End KeepAlive mode and blow away our status tray icon.
530  chrome::EndKeepAlive();
531
532  RemoveStatusTrayIcon();
533  content::NotificationService::current()->Notify(
534      chrome::NOTIFICATION_BACKGROUND_MODE_CHANGED,
535      content::Source<BackgroundModeManager>(this),
536      content::Details<bool>(&in_background_mode_));
537}
538
539void BackgroundModeManager::EnableBackgroundMode() {
540  DCHECK(IsBackgroundModePrefEnabled());
541  // If background mode should be enabled, but isn't, turn it on.
542  if (!in_background_mode_ && ShouldBeInBackgroundMode()) {
543    StartBackgroundMode();
544    EnableLaunchOnStartup(true);
545  }
546}
547
548void BackgroundModeManager::DisableBackgroundMode() {
549  DCHECK(!IsBackgroundModePrefEnabled());
550  // If background mode is currently enabled, turn it off.
551  if (in_background_mode_) {
552    EndBackgroundMode();
553    EnableLaunchOnStartup(false);
554  }
555}
556
557int BackgroundModeManager::GetBackgroundAppCount() const {
558  int count = 0;
559  // Walk the BackgroundModeData for all profiles and count the number of apps.
560  for (BackgroundModeInfoMap::const_iterator it =
561       background_mode_data_.begin();
562       it != background_mode_data_.end();
563       ++it) {
564    count += it->second->GetBackgroundAppCount();
565  }
566  DCHECK(count >= 0);
567  return count;
568}
569
570int BackgroundModeManager::GetBackgroundAppCountForProfile(
571    Profile* const profile) const {
572  BackgroundModeData* bmd = GetBackgroundModeData(profile);
573  return bmd->GetBackgroundAppCount();
574}
575
576bool BackgroundModeManager::ShouldBeInBackgroundMode() const {
577  return IsBackgroundModePrefEnabled() &&
578      (GetBackgroundAppCount() > 0 || keep_alive_for_test_);
579}
580
581void BackgroundModeManager::OnBackgroundAppInstalled(
582    const Extension* extension) {
583  // Background mode is disabled - don't do anything.
584  if (!IsBackgroundModePrefEnabled())
585    return;
586
587  // Check if we need a status tray icon and make one if we do (needed so we
588  // can display the app-installed notification below).
589  CreateStatusTrayIcon();
590
591  // Notify the user that a background app has been installed.
592  if (extension) {  // NULL when called by unit tests.
593    DisplayAppInstalledNotification(extension);
594  }
595}
596
597void BackgroundModeManager::CheckReloadStatus(
598    const Extension* extension,
599    bool* is_being_reloaded) {
600    // Walk the BackgroundModeData for all profiles to see if one of their
601    // extensions is being reloaded.
602    for (BackgroundModeInfoMap::const_iterator it =
603             background_mode_data_.begin();
604         it != background_mode_data_.end();
605         ++it) {
606      Profile* profile = it->first;
607      // If the extension is being reloaded, no need to show a notification.
608      if (profile->GetExtensionService()->IsBeingReloaded(extension->id()))
609        *is_being_reloaded = true;
610    }
611}
612
613void BackgroundModeManager::CreateStatusTrayIcon() {
614  // Only need status icons on windows/linux. ChromeOS doesn't allow exiting
615  // Chrome and Mac can use the dock icon instead.
616
617  // Since there are multiple profiles which share the status tray, we now
618  // use the browser process to keep track of it.
619#if !defined(OS_MACOSX) && !defined(OS_CHROMEOS)
620  if (!status_tray_)
621    status_tray_ = g_browser_process->status_tray();
622#endif
623
624  // If the platform doesn't support status icons, or we've already created
625  // our status icon, just return.
626  if (!status_tray_ || status_icon_)
627    return;
628
629  // TODO(rlp): Status tray icon should have submenus for each profile.
630  gfx::ImageSkia* image_skia = ui::ResourceBundle::GetSharedInstance().
631      GetImageSkiaNamed(IDR_STATUS_TRAY_ICON);
632
633  status_icon_ = status_tray_->CreateStatusIcon(
634      StatusTray::BACKGROUND_MODE_ICON,
635      *image_skia,
636      l10n_util::GetStringUTF16(IDS_PRODUCT_NAME));
637  if (!status_icon_)
638    return;
639  UpdateStatusTrayIconContextMenu();
640}
641
642void BackgroundModeManager::UpdateStatusTrayIconContextMenu() {
643  // If no status icon exists, it's either because one wasn't created when
644  // it should have been which can happen when extensions load after the
645  // profile has already been registered with the background mode manager.
646  if (in_background_mode_ && !status_icon_)
647     CreateStatusTrayIcon();
648
649  // If we don't have a status icon or one could not be created succesfully,
650  // then no need to continue the update.
651  if (!status_icon_)
652    return;
653
654  // We should only get here if we have a profile loaded, or if we're running
655  // in test mode.
656  if (background_mode_data_.empty()) {
657    DCHECK(keep_alive_for_test_);
658    return;
659  }
660
661  // TODO(rlp): Add current profile color or indicator.
662  // Create a context menu item for Chrome.
663  scoped_ptr<StatusIconMenuModel> menu(new StatusIconMenuModel(this));
664  // Add About item
665  menu->AddItem(IDC_ABOUT, l10n_util::GetStringUTF16(IDS_ABOUT));
666  menu->AddItemWithStringId(IDC_TASK_MANAGER, IDS_TASK_MANAGER);
667  menu->AddSeparator(ui::NORMAL_SEPARATOR);
668
669  if (profile_cache_->GetNumberOfProfiles() > 1) {
670    std::vector<BackgroundModeData*> bmd_vector;
671    for (BackgroundModeInfoMap::iterator it =
672         background_mode_data_.begin();
673         it != background_mode_data_.end();
674         ++it) {
675       bmd_vector.push_back(it->second.get());
676    }
677    std::sort(bmd_vector.begin(), bmd_vector.end(),
678              &BackgroundModeData::BackgroundModeDataCompare);
679    int profiles_with_apps = 0;
680    for (std::vector<BackgroundModeData*>::const_iterator bmd_it =
681         bmd_vector.begin();
682         bmd_it != bmd_vector.end();
683         ++bmd_it) {
684      BackgroundModeData* bmd = *bmd_it;
685      // We should only display the profile in the status icon if it has at
686      // least one background app.
687      if (bmd->GetBackgroundAppCount() > 0) {
688        StatusIconMenuModel* submenu = new StatusIconMenuModel(bmd);
689        bmd->BuildProfileMenu(submenu, menu.get());
690        profiles_with_apps++;
691      }
692    }
693    // We should only be displaying the status tray icon if there is at least
694    // one profile with a background app.
695    DCHECK_GT(profiles_with_apps, 0);
696  } else {
697    // We should only have one profile in the cache if we are not
698    // using multi-profiles. If keep_alive_for_test_ is set, then we may not
699    // have any profiles in the cache.
700    DCHECK(profile_cache_->GetNumberOfProfiles() == size_t(1) ||
701           keep_alive_for_test_);
702    background_mode_data_.begin()->second->BuildProfileMenu(menu.get(), NULL);
703  }
704
705  menu->AddSeparator(ui::NORMAL_SEPARATOR);
706  menu->AddCheckItemWithStringId(
707      IDC_STATUS_TRAY_KEEP_CHROME_RUNNING_IN_BACKGROUND,
708      IDS_STATUS_TRAY_KEEP_CHROME_RUNNING_IN_BACKGROUND);
709  menu->SetCommandIdChecked(IDC_STATUS_TRAY_KEEP_CHROME_RUNNING_IN_BACKGROUND,
710                            true);
711
712  PrefService* service = g_browser_process->local_state();
713  DCHECK(service);
714  bool enabled =
715      service->IsUserModifiablePreference(prefs::kBackgroundModeEnabled);
716  menu->SetCommandIdEnabled(IDC_STATUS_TRAY_KEEP_CHROME_RUNNING_IN_BACKGROUND,
717                            enabled);
718
719  menu->AddItemWithStringId(IDC_EXIT, IDS_EXIT);
720
721  context_menu_ = menu.get();
722  status_icon_->SetContextMenu(menu.Pass());
723}
724
725void BackgroundModeManager::RemoveStatusTrayIcon() {
726  if (status_icon_)
727    status_tray_->RemoveStatusIcon(status_icon_);
728  status_icon_ = NULL;
729  context_menu_ = NULL;
730}
731
732BackgroundModeManager::BackgroundModeData*
733BackgroundModeManager::GetBackgroundModeData(Profile* const profile) const {
734  DCHECK(background_mode_data_.find(profile) != background_mode_data_.end());
735  return background_mode_data_.find(profile)->second.get();
736}
737
738BackgroundModeManager::BackgroundModeInfoMap::iterator
739BackgroundModeManager::GetBackgroundModeIterator(
740    const string16& profile_name) {
741  BackgroundModeInfoMap::iterator profile_it =
742      background_mode_data_.end();
743  for (BackgroundModeInfoMap::iterator it =
744       background_mode_data_.begin();
745       it != background_mode_data_.end();
746       ++it) {
747    if (it->second->name() == profile_name) {
748      profile_it = it;
749    }
750  }
751  return profile_it;
752}
753
754bool BackgroundModeManager::IsBackgroundModePrefEnabled() const {
755  PrefService* service = g_browser_process->local_state();
756  DCHECK(service);
757  return service->GetBoolean(prefs::kBackgroundModeEnabled);
758}
759