ash/system/tray/system_tray.cc

   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 "ash/system/tray/system_tray.h"
   6
   7 #include "ash/ash_switches.h"
   8 #include "ash/metrics/user_metrics_recorder.h"
   9 #include "ash/shelf/shelf_layout_manager.h"
  10 #include "ash/shell.h"
  11 #include "ash/shell/panel_window.h"
  12 #include "ash/shell_window_ids.h"
  13 #include "ash/system/audio/tray_audio.h"
  14 #include "ash/system/bluetooth/tray_bluetooth.h"
  15 #include "ash/system/date/tray_date.h"
  16 #include "ash/system/ime/tray_ime.h"
  17 #include "ash/system/status_area_widget.h"
  18 #include "ash/system/tray/system_tray_delegate.h"
  19 #include "ash/system/tray/system_tray_item.h"
  20 #include "ash/system/tray/tray_bubble_wrapper.h"
  21 #include "ash/system/tray/tray_constants.h"
  22 #include "ash/system/tray_accessibility.h"
  23 #include "ash/system/tray_update.h"
  24 #include "ash/system/user/login_status.h"
  25 #include "ash/system/user/tray_user.h"
  26 #include "ash/system/user/tray_user_separator.h"
  27 #include "ash/system/web_notification/web_notification_tray.h"
  28 #include "base/logging.h"
  29 #include "base/strings/utf_string_conversions.h"
  30 #include "base/timer/timer.h"
  31 #include "grit/ash_strings.h"
  32 #include "ui/aura/window_event_dispatcher.h"
  33 #include "ui/base/l10n/l10n_util.h"
  34 #include "ui/compositor/layer.h"
  35 #include "ui/events/event_constants.h"
  36 #include "ui/gfx/canvas.h"
  37 #include "ui/gfx/screen.h"
  38 #include "ui/gfx/skia_util.h"
  39 #include "ui/views/border.h"
  40 #include "ui/views/controls/label.h"
  41 #include "ui/views/layout/box_layout.h"
  42 #include "ui/views/layout/fill_layout.h"
  43 #include "ui/views/view.h"
  44
  45 #if defined(OS_CHROMEOS)
  46 #include "ash/system/chromeos/audio/tray_audio_chromeos.h"
  47 #include "ash/system/chromeos/brightness/tray_brightness.h"
  48 #include "ash/system/chromeos/enterprise/tray_enterprise.h"
  49 #include "ash/system/chromeos/network/tray_network.h"
  50 #include "ash/system/chromeos/network/tray_sms.h"
  51 #include "ash/system/chromeos/network/tray_vpn.h"
  52 #include "ash/system/chromeos/power/power_status.h"
  53 #include "ash/system/chromeos/power/tray_power.h"
  54 #include "ash/system/chromeos/rotation/tray_rotation_lock.h"
  55 #include "ash/system/chromeos/screen_security/screen_capture_tray_item.h"
  56 #include "ash/system/chromeos/screen_security/screen_share_tray_item.h"
  57 #include "ash/system/chromeos/session/tray_session_length_limit.h"
  58 #include "ash/system/chromeos/settings/tray_settings.h"
  59 #include "ash/system/chromeos/supervised/tray_supervised_user.h"
  60 #include "ash/system/chromeos/tray_caps_lock.h"
  61 #include "ash/system/chromeos/tray_display.h"
  62 #include "ash/system/chromeos/tray_tracing.h"
  63 #include "ash/system/tray/media_security/multi_profile_media_tray_item.h"
  64 #include "ui/message_center/message_center.h"
  65 #elif defined(OS_WIN)
  66 #include "ash/system/win/audio/tray_audio_win.h"
  67 #include "media/audio/win/core_audio_util_win.h"
  68 #endif
  69
  70 using views::TrayBubbleView;
  71
  72 namespace ash {
  73
  74 // The minimum width of the system tray menu width.
  75 const int kMinimumSystemTrayMenuWidth = 300;
  76
  77 // Class to initialize and manage the SystemTrayBubble and TrayBubbleWrapper
  78 // instances for a bubble.
  79
  80 class SystemBubbleWrapper {
  81  public:
  82   // Takes ownership of |bubble|.
  83   explicit SystemBubbleWrapper(SystemTrayBubble* bubble)
  84       : bubble_(bubble), is_persistent_(false) {}
  85
  86   // Initializes the bubble view and creates |bubble_wrapper_|.
  87   void InitView(TrayBackgroundView* tray,
  88                 views::View* anchor,
  89                 TrayBubbleView::InitParams* init_params,
  90                 bool is_persistent) {
  91     DCHECK(anchor);
  92     user::LoginStatus login_status =
  93         Shell::GetInstance()->system_tray_delegate()->GetUserLoginStatus();
  94     bubble_->InitView(anchor, login_status, init_params);
  95     bubble_wrapper_.reset(new TrayBubbleWrapper(tray, bubble_->bubble_view()));
  96     // The system bubble should not have an arrow.
  97     bubble_->bubble_view()->SetArrowPaintType(
  98         views::BubbleBorder::PAINT_NONE);
  99     is_persistent_ = is_persistent;
 100
 101     // If ChromeVox is enabled, focus the default item if no item is focused.
 102     if (Shell::GetInstance()->accessibility_delegate()->
 103         IsSpokenFeedbackEnabled()) {
 104       bubble_->FocusDefaultIfNeeded();
 105     }
 106   }
 107
 108   // Convenience accessors:
 109   SystemTrayBubble* bubble() const { return bubble_.get(); }
 110   SystemTrayBubble::BubbleType bubble_type() const {
 111     return bubble_->bubble_type();
 112   }
 113   TrayBubbleView* bubble_view() const { return bubble_->bubble_view(); }
 114   bool is_persistent() const { return is_persistent_; }
 115
 116  private:
 117   scoped_ptr<SystemTrayBubble> bubble_;
 118   scoped_ptr<TrayBubbleWrapper> bubble_wrapper_;
 119   bool is_persistent_;
 120
 121   DISALLOW_COPY_AND_ASSIGN(SystemBubbleWrapper);
 122 };
 123
 124
 125 // SystemTray
 126
 127 SystemTray::SystemTray(StatusAreaWidget* status_area_widget)
 128     : TrayBackgroundView(status_area_widget),
 129       items_(),
 130       default_bubble_height_(0),
 131       hide_notifications_(false),
 132       full_system_tray_menu_(false),
 133       tray_accessibility_(NULL),
 134       tray_date_(NULL) {
 135   SetContentsBackground();
 136 }
 137
 138 SystemTray::~SystemTray() {
 139   // Destroy any child views that might have back pointers before ~View().
 140   system_bubble_.reset();
 141   notification_bubble_.reset();
 142   for (std::vector<SystemTrayItem*>::iterator it = items_.begin();
 143        it != items_.end();
 144        ++it) {
 145     (*it)->DestroyTrayView();
 146   }
 147 }
 148
 149 void SystemTray::InitializeTrayItems(SystemTrayDelegate* delegate) {
 150   TrayBackgroundView::Initialize();
 151   CreateItems(delegate);
 152 }
 153
 154 void SystemTray::CreateItems(SystemTrayDelegate* delegate) {
 155 #if !defined(OS_WIN)
 156   // Create user items for each possible user.
 157   ash::Shell* shell = ash::Shell::GetInstance();
 158   int maximum_user_profiles =
 159           shell->session_state_delegate()->GetMaximumNumberOfLoggedInUsers();
 160   for (int i = 0; i < maximum_user_profiles; i++)
 161     AddTrayItem(new TrayUser(this, i));
 162
 163   if (maximum_user_profiles > 1) {
 164     // Add a special double line separator between users and the rest of the
 165     // menu if more then one user is logged in.
 166     AddTrayItem(new TrayUserSeparator(this));
 167   }
 168 #endif
 169
 170   tray_accessibility_ = new TrayAccessibility(this);
 171   tray_date_ = new TrayDate(this);
 172
 173 #if defined(OS_CHROMEOS)
 174   AddTrayItem(new TraySessionLengthLimit(this));
 175   AddTrayItem(new TrayEnterprise(this));
 176   AddTrayItem(new TraySupervisedUser(this));
 177   AddTrayItem(new TrayIME(this));
 178   AddTrayItem(tray_accessibility_);
 179   AddTrayItem(new TrayTracing(this));
 180   AddTrayItem(new TrayPower(this, message_center::MessageCenter::Get()));
 181   AddTrayItem(new TrayNetwork(this));
 182   AddTrayItem(new TrayVPN(this));
 183   AddTrayItem(new TraySms(this));
 184   AddTrayItem(new TrayBluetooth(this));
 185   AddTrayItem(new TrayDisplay(this));
 186   AddTrayItem(new ScreenCaptureTrayItem(this));
 187   AddTrayItem(new ScreenShareTrayItem(this));
 188   AddTrayItem(new MultiProfileMediaTrayItem(this));
 189   AddTrayItem(new TrayAudioChromeOs(this));
 190   AddTrayItem(new TrayBrightness(this));
 191   AddTrayItem(new TrayCapsLock(this));
 192   AddTrayItem(new TraySettings(this));
 193   AddTrayItem(new TrayUpdate(this));
 194   AddTrayItem(new TrayRotationLock(this));
 195   AddTrayItem(tray_date_);
 196 #elif defined(OS_WIN)
 197   AddTrayItem(tray_accessibility_);
 198   if (media::CoreAudioUtil::IsSupported())
 199     AddTrayItem(new TrayAudioWin(this));
 200   AddTrayItem(new TrayUpdate(this));
 201   AddTrayItem(tray_date_);
 202 #elif defined(OS_LINUX)
 203   AddTrayItem(new TrayIME(this));
 204   AddTrayItem(tray_accessibility_);
 205   AddTrayItem(new TrayBluetooth(this));
 206   AddTrayItem(new TrayUpdate(this));
 207   AddTrayItem(tray_date_);
 208 #endif
 209
 210   SetVisible(ash::Shell::GetInstance()->system_tray_delegate()->
 211       GetTrayVisibilityOnStartup());
 212 }
 213
 214 void SystemTray::AddTrayItem(SystemTrayItem* item) {
 215   items_.push_back(item);
 216
 217   SystemTrayDelegate* delegate = Shell::GetInstance()->system_tray_delegate();
 218   views::View* tray_item = item->CreateTrayView(delegate->GetUserLoginStatus());
 219   item->UpdateAfterShelfAlignmentChange(shelf_alignment());
 220
 221   if (tray_item) {
 222     tray_container()->AddChildViewAt(tray_item, 0);
 223     PreferredSizeChanged();
 224     tray_item_map_[item] = tray_item;
 225   }
 226 }
 227
 228 void SystemTray::RemoveTrayItem(SystemTrayItem* item) {
 229   NOTIMPLEMENTED();
 230 }
 231
 232 const std::vector<SystemTrayItem*>& SystemTray::GetTrayItems() const {
 233   return items_.get();
 234 }
 235
 236 void SystemTray::ShowDefaultView(BubbleCreationType creation_type) {
 237   ShowDefaultViewWithOffset(
 238       creation_type,
 239       TrayBubbleView::InitParams::kArrowDefaultOffset,
 240       false);
 241 }
 242
 243 void SystemTray::ShowPersistentDefaultView() {
 244   ShowItems(items_.get(),
 245             false,
 246             false,
 247             BUBBLE_CREATE_NEW,
 248             TrayBubbleView::InitParams::kArrowDefaultOffset,
 249             true);
 250 }
 251
 252 void SystemTray::ShowDetailedView(SystemTrayItem* item,
 253                                   int close_delay,
 254                                   bool activate,
 255                                   BubbleCreationType creation_type) {
 256   std::vector<SystemTrayItem*> items;
 257   // The detailed view with timeout means a UI to show the current system state,
 258   // like the audio level or brightness. Such UI should behave as persistent and
 259   // keep its own logic for the appearance.
 260   bool persistent = (
 261       !activate && close_delay > 0 && creation_type == BUBBLE_CREATE_NEW);
 262   items.push_back(item);
 263   ShowItems(
 264       items, true, activate, creation_type, GetTrayXOffset(item), persistent);
 265   if (system_bubble_)
 266     system_bubble_->bubble()->StartAutoCloseTimer(close_delay);
 267 }
 268
 269 void SystemTray::SetDetailedViewCloseDelay(int close_delay) {
 270   if (HasSystemBubbleType(SystemTrayBubble::BUBBLE_TYPE_DETAILED))
 271     system_bubble_->bubble()->StartAutoCloseTimer(close_delay);
 272 }
 273
 274 void SystemTray::HideDetailedView(SystemTrayItem* item) {
 275   if (item != detailed_item_)
 276     return;
 277   DestroySystemBubble();
 278   UpdateNotificationBubble();
 279 }
 280
 281 void SystemTray::ShowNotificationView(SystemTrayItem* item) {
 282   if (std::find(notification_items_.begin(), notification_items_.end(), item)
 283       != notification_items_.end())
 284     return;
 285   notification_items_.push_back(item);
 286   UpdateNotificationBubble();
 287 }
 288
 289 void SystemTray::HideNotificationView(SystemTrayItem* item) {
 290   std::vector<SystemTrayItem*>::iterator found_iter =
 291       std::find(notification_items_.begin(), notification_items_.end(), item);
 292   if (found_iter == notification_items_.end())
 293     return;
 294   notification_items_.erase(found_iter);
 295   // Only update the notification bubble if visible (i.e. don't create one).
 296   if (notification_bubble_)
 297     UpdateNotificationBubble();
 298 }
 299
 300 void SystemTray::UpdateAfterLoginStatusChange(user::LoginStatus login_status) {
 301   DestroySystemBubble();
 302   UpdateNotificationBubble();
 303
 304   for (std::vector<SystemTrayItem*>::iterator it = items_.begin();
 305       it != items_.end();
 306       ++it) {
 307     (*it)->UpdateAfterLoginStatusChange(login_status);
 308   }
 309
 310   // Items default to SHELF_ALIGNMENT_BOTTOM. Update them if the initial
 311   // position of the shelf differs.
 312   if (shelf_alignment() != SHELF_ALIGNMENT_BOTTOM)
 313     UpdateAfterShelfAlignmentChange(shelf_alignment());
 314
 315   SetVisible(true);
 316   PreferredSizeChanged();
 317 }
 318
 319 void SystemTray::UpdateAfterShelfAlignmentChange(ShelfAlignment alignment) {
 320   for (std::vector<SystemTrayItem*>::iterator it = items_.begin();
 321       it != items_.end();
 322       ++it) {
 323     (*it)->UpdateAfterShelfAlignmentChange(alignment);
 324   }
 325 }
 326
 327 void SystemTray::SetHideNotifications(bool hide_notifications) {
 328   if (notification_bubble_)
 329     notification_bubble_->bubble()->SetVisible(!hide_notifications);
 330   hide_notifications_ = hide_notifications;
 331 }
 332
 333 bool SystemTray::ShouldShowShelf() const {
 334   return system_bubble_.get() && system_bubble_->bubble()->ShouldShowShelf();
 335 }
 336
 337 bool SystemTray::HasSystemBubble() const {
 338   return system_bubble_.get() != NULL;
 339 }
 340
 341 bool SystemTray::HasNotificationBubble() const {
 342   return notification_bubble_.get() != NULL;
 343 }
 344
 345 SystemTrayBubble* SystemTray::GetSystemBubble() {
 346   if (!system_bubble_)
 347     return NULL;
 348   return system_bubble_->bubble();
 349 }
 350
 351 bool SystemTray::IsAnyBubbleVisible() const {
 352   return ((system_bubble_.get() &&
 353            system_bubble_->bubble()->IsVisible()) ||
 354           (notification_bubble_.get() &&
 355            notification_bubble_->bubble()->IsVisible()));
 356 }
 357
 358 bool SystemTray::IsMouseInNotificationBubble() const {
 359   if (!notification_bubble_)
 360     return false;
 361   return notification_bubble_->bubble_view()->GetBoundsInScreen().Contains(
 362       Shell::GetScreen()->GetCursorScreenPoint());
 363 }
 364
 365 bool SystemTray::CloseSystemBubble() const {
 366   if (!system_bubble_)
 367     return false;
 368   system_bubble_->bubble()->Close();
 369   return true;
 370 }
 371
 372 views::View* SystemTray::GetHelpButtonView() const {
 373   return tray_date_->GetHelpButtonView();
 374 }
 375
 376 bool SystemTray::CloseNotificationBubbleForTest() const {
 377   if (!notification_bubble_)
 378     return false;
 379   notification_bubble_->bubble()->Close();
 380   return true;
 381 }
 382
 383 // Private methods.
 384
 385 bool SystemTray::HasSystemBubbleType(SystemTrayBubble::BubbleType type) {
 386   DCHECK(type != SystemTrayBubble::BUBBLE_TYPE_NOTIFICATION);
 387   return system_bubble_.get() && system_bubble_->bubble_type() == type;
 388 }
 389
 390 void SystemTray::DestroySystemBubble() {
 391   CloseSystemBubbleAndDeactivateSystemTray();
 392   detailed_item_ = NULL;
 393   UpdateWebNotifications();
 394 }
 395
 396 void SystemTray::DestroyNotificationBubble() {
 397   if (notification_bubble_) {
 398     notification_bubble_.reset();
 399     UpdateWebNotifications();
 400   }
 401 }
 402
 403 base::string16 SystemTray::GetAccessibleNameForTray() {
 404   base::string16 time = GetAccessibleTimeString(base::Time::Now());
 405   base::string16 battery = base::ASCIIToUTF16("");
 406 #if defined(OS_CHROMEOS)
 407   battery = PowerStatus::Get()->GetAccessibleNameString(false);
 408 #endif
 409   return l10n_util::GetStringFUTF16(
 410       IDS_ASH_STATUS_TRAY_ACCESSIBLE_DESCRIPTION, time, battery);
 411 }
 412
 413 int SystemTray::GetTrayXOffset(SystemTrayItem* item) const {
 414   // Don't attempt to align the arrow if the shelf is on the left or right.
 415   if (shelf_alignment() != SHELF_ALIGNMENT_BOTTOM &&
 416       shelf_alignment() != SHELF_ALIGNMENT_TOP)
 417     return TrayBubbleView::InitParams::kArrowDefaultOffset;
 418
 419   std::map<SystemTrayItem*, views::View*>::const_iterator it =
 420       tray_item_map_.find(item);
 421   if (it == tray_item_map_.end())
 422     return TrayBubbleView::InitParams::kArrowDefaultOffset;
 423
 424   const views::View* item_view = it->second;
 425   if (item_view->bounds().IsEmpty()) {
 426     // The bounds of item could be still empty if it does not have a visible
 427     // tray view. In that case, use the default (minimum) offset.
 428     return TrayBubbleView::InitParams::kArrowDefaultOffset;
 429   }
 430
 431   gfx::Point point(item_view->width() / 2, 0);
 432   ConvertPointToWidget(item_view, &point);
 433   return point.x();
 434 }
 435
 436 void SystemTray::ShowDefaultViewWithOffset(BubbleCreationType creation_type,
 437                                            int arrow_offset,
 438                                            bool persistent) {
 439   if (creation_type != BUBBLE_USE_EXISTING) {
 440     Shell::GetInstance()->metrics()->RecordUserMetricsAction(
 441         ash::UMA_STATUS_AREA_MENU_OPENED);
 442   }
 443   ShowItems(items_.get(), false, true, creation_type, arrow_offset, persistent);
 444 }
 445
 446 void SystemTray::ShowItems(const std::vector<SystemTrayItem*>& items,
 447                            bool detailed,
 448                            bool can_activate,
 449                            BubbleCreationType creation_type,
 450                            int arrow_offset,
 451                            bool persistent) {
 452   // No system tray bubbles in kiosk mode.
 453   if (Shell::GetInstance()->system_tray_delegate()->GetUserLoginStatus() ==
 454       ash::user::LOGGED_IN_KIOSK_APP) {
 455     return;
 456   }
 457
 458   // Destroy any existing bubble and create a new one.
 459   SystemTrayBubble::BubbleType bubble_type = detailed ?
 460       SystemTrayBubble::BUBBLE_TYPE_DETAILED :
 461       SystemTrayBubble::BUBBLE_TYPE_DEFAULT;
 462
 463   // Destroy the notification bubble here so that it doesn't get rebuilt
 464   // while we add items to the main bubble_ (e.g. in HideNotificationView).
 465   notification_bubble_.reset();
 466   if (system_bubble_.get() && creation_type == BUBBLE_USE_EXISTING) {
 467     system_bubble_->bubble()->UpdateView(items, bubble_type);
 468     // If ChromeVox is enabled, focus the default item if no item is focused.
 469     if (Shell::GetInstance()->accessibility_delegate()->
 470         IsSpokenFeedbackEnabled()) {
 471       system_bubble_->bubble()->FocusDefaultIfNeeded();
 472     }
 473   } else {
 474     // Remember if the menu is a single property (like e.g. volume) or the
 475     // full tray menu. Note that in case of the |BUBBLE_USE_EXISTING| case
 476     // above, |full_system_tray_menu_| does not get changed since the fact that
 477     // the menu is full (or not) doesn't change even if a "single property"
 478     // (like network) replaces most of the menu.
 479     full_system_tray_menu_ = items.size() > 1;
 480     // The menu width is fixed, and it is a per language setting.
 481     int menu_width = std::max(kMinimumSystemTrayMenuWidth,
 482         Shell::GetInstance()->system_tray_delegate()->GetSystemTrayMenuWidth());
 483
 484     TrayBubbleView::InitParams init_params(TrayBubbleView::ANCHOR_TYPE_TRAY,
 485                                            GetAnchorAlignment(),
 486                                            menu_width,
 487                                            kTrayPopupMaxWidth);
 488     init_params.can_activate = can_activate;
 489     init_params.first_item_has_no_margin = true;
 490     if (detailed) {
 491       // This is the case where a volume control or brightness control bubble
 492       // is created.
 493       init_params.max_height = default_bubble_height_;
 494       init_params.arrow_color = kBackgroundColor;
 495     } else {
 496       init_params.arrow_color = kHeaderBackgroundColor;
 497     }
 498     init_params.arrow_offset = arrow_offset;
 499     if (bubble_type == SystemTrayBubble::BUBBLE_TYPE_DEFAULT)
 500       init_params.close_on_deactivate = !persistent;
 501     // For Volume and Brightness we don't want to show an arrow when
 502     // they are shown in a bubble by themselves.
 503     init_params.arrow_paint_type = views::BubbleBorder::PAINT_NORMAL;
 504     if (items.size() == 1 && items[0]->ShouldHideArrow())
 505       init_params.arrow_paint_type = views::BubbleBorder::PAINT_TRANSPARENT;
 506     SystemTrayBubble* bubble = new SystemTrayBubble(this, items, bubble_type);
 507     system_bubble_.reset(new SystemBubbleWrapper(bubble));
 508     system_bubble_->InitView(this, tray_container(), &init_params, persistent);
 509   }
 510   // Save height of default view for creating detailed views directly.
 511   if (!detailed)
 512     default_bubble_height_ = system_bubble_->bubble_view()->height();
 513
 514   if (detailed && items.size() > 0)
 515     detailed_item_ = items[0];
 516   else
 517     detailed_item_ = NULL;
 518
 519   UpdateNotificationBubble();  // State changed, re-create notifications.
 520   if (!notification_bubble_)
 521     UpdateWebNotifications();
 522   GetShelfLayoutManager()->UpdateAutoHideState();
 523
 524   // When we show the system menu in our alternate shelf layout, we need to
 525   // tint the background.
 526   if (full_system_tray_menu_)
 527     SetDrawBackgroundAsActive(true);
 528 }
 529
 530 void SystemTray::UpdateNotificationBubble() {
 531   // Only show the notification bubble if we have notifications.
 532   if (notification_items_.empty()) {
 533     DestroyNotificationBubble();
 534     return;
 535   }
 536   // Destroy the existing bubble before constructing a new one.
 537   notification_bubble_.reset();
 538   SystemTrayBubble* notification_bubble;
 539   notification_bubble = new SystemTrayBubble(
 540       this, notification_items_, SystemTrayBubble::BUBBLE_TYPE_NOTIFICATION);
 541   views::View* anchor;
 542   TrayBubbleView::AnchorType anchor_type;
 543   // Tray items might want to show notifications while we are creating and
 544   // initializing the |system_bubble_| - but it might not be fully initialized
 545   // when coming here - this would produce a crashed like crbug.com/247416.
 546   // As such we check the existence of the widget here.
 547   if (system_bubble_.get() &&
 548       system_bubble_->bubble_view() &&
 549       system_bubble_->bubble_view()->GetWidget()) {
 550     anchor = system_bubble_->bubble_view();
 551     anchor_type = TrayBubbleView::ANCHOR_TYPE_BUBBLE;
 552   } else {
 553     anchor = tray_container();
 554     anchor_type = TrayBubbleView::ANCHOR_TYPE_TRAY;
 555   }
 556   TrayBubbleView::InitParams init_params(anchor_type,
 557                                          GetAnchorAlignment(),
 558                                          kTrayPopupMinWidth,
 559                                          kTrayPopupMaxWidth);
 560   init_params.first_item_has_no_margin = true;
 561   init_params.arrow_color = kBackgroundColor;
 562   init_params.arrow_offset = GetTrayXOffset(notification_items_[0]);
 563   notification_bubble_.reset(new SystemBubbleWrapper(notification_bubble));
 564   notification_bubble_->InitView(this, anchor, &init_params, false);
 565
 566   if (notification_bubble->bubble_view()->child_count() == 0) {
 567     // It is possible that none of the items generated actual notifications.
 568     DestroyNotificationBubble();
 569     return;
 570   }
 571   if (hide_notifications_)
 572     notification_bubble->SetVisible(false);
 573   else
 574     UpdateWebNotifications();
 575 }
 576
 577 void SystemTray::UpdateWebNotifications() {
 578   TrayBubbleView* bubble_view = NULL;
 579   if (notification_bubble_)
 580     bubble_view = notification_bubble_->bubble_view();
 581   else if (system_bubble_)
 582     bubble_view = system_bubble_->bubble_view();
 583
 584   int height = 0;
 585   if (bubble_view) {
 586     gfx::Rect work_area = Shell::GetScreen()->GetDisplayNearestWindow(
 587         bubble_view->GetWidget()->GetNativeView()).work_area();
 588     if (GetShelfLayoutManager()->GetAlignment() != SHELF_ALIGNMENT_TOP) {
 589       height = std::max(
 590           0, work_area.height() - bubble_view->GetBoundsInScreen().y());
 591     } else {
 592       height = std::max(
 593           0, bubble_view->GetBoundsInScreen().bottom() - work_area.y());
 594     }
 595   }
 596   status_area_widget()->web_notification_tray()->SetSystemTrayHeight(height);
 597 }
 598
 599 base::string16 SystemTray::GetAccessibleTimeString(
 600     const base::Time& now) const {
 601   base::HourClockType hour_type =
 602       ash::Shell::GetInstance()->system_tray_delegate()->GetHourClockType();
 603   return base::TimeFormatTimeOfDayWithHourClockType(
 604       now, hour_type, base::kKeepAmPm);
 605 }
 606
 607 void SystemTray::SetShelfAlignment(ShelfAlignment alignment) {
 608   if (alignment == shelf_alignment())
 609     return;
 610   TrayBackgroundView::SetShelfAlignment(alignment);
 611   UpdateAfterShelfAlignmentChange(alignment);
 612   // Destroy any existing bubble so that it is rebuilt correctly.
 613   CloseSystemBubbleAndDeactivateSystemTray();
 614   // Rebuild any notification bubble.
 615   if (notification_bubble_) {
 616     notification_bubble_.reset();
 617     UpdateNotificationBubble();
 618   }
 619 }
 620
 621 void SystemTray::AnchorUpdated() {
 622   if (notification_bubble_) {
 623     notification_bubble_->bubble_view()->UpdateBubble();
 624     // Ensure that the notification buble is above the shelf/status area.
 625     notification_bubble_->bubble_view()->GetWidget()->StackAtTop();
 626     UpdateBubbleViewArrow(notification_bubble_->bubble_view());
 627   }
 628   if (system_bubble_) {
 629     system_bubble_->bubble_view()->UpdateBubble();
 630     UpdateBubbleViewArrow(system_bubble_->bubble_view());
 631   }
 632 }
 633
 634 void SystemTray::BubbleResized(const TrayBubbleView* bubble_view) {
 635   UpdateWebNotifications();
 636 }
 637
 638 void SystemTray::HideBubbleWithView(const TrayBubbleView* bubble_view) {
 639   if (system_bubble_.get() && bubble_view == system_bubble_->bubble_view()) {
 640     DestroySystemBubble();
 641     UpdateNotificationBubble();  // State changed, re-create notifications.
 642     GetShelfLayoutManager()->UpdateAutoHideState();
 643   } else if (notification_bubble_.get() &&
 644              bubble_view == notification_bubble_->bubble_view()) {
 645     DestroyNotificationBubble();
 646   }
 647 }
 648
 649 bool SystemTray::ClickedOutsideBubble() {
 650   if (!system_bubble_ || system_bubble_->is_persistent())
 651     return false;
 652   HideBubbleWithView(system_bubble_->bubble_view());
 653   return true;
 654 }
 655
 656 void SystemTray::BubbleViewDestroyed() {
 657   if (system_bubble_) {
 658     system_bubble_->bubble()->DestroyItemViews();
 659     system_bubble_->bubble()->BubbleViewDestroyed();
 660   }
 661 }
 662
 663 void SystemTray::OnMouseEnteredView() {
 664   if (system_bubble_)
 665     system_bubble_->bubble()->StopAutoCloseTimer();
 666 }
 667
 668 void SystemTray::OnMouseExitedView() {
 669   if (system_bubble_)
 670     system_bubble_->bubble()->RestartAutoCloseTimer();
 671 }
 672
 673 base::string16 SystemTray::GetAccessibleNameForBubble() {
 674   return GetAccessibleNameForTray();
 675 }
 676
 677 gfx::Rect SystemTray::GetAnchorRect(
 678     views::Widget* anchor_widget,
 679     TrayBubbleView::AnchorType anchor_type,
 680     TrayBubbleView::AnchorAlignment anchor_alignment) const {
 681   return GetBubbleAnchorRect(anchor_widget, anchor_type, anchor_alignment);
 682 }
 683
 684 void SystemTray::HideBubble(const TrayBubbleView* bubble_view) {
 685   HideBubbleWithView(bubble_view);
 686 }
 687
 688 views::View* SystemTray::GetTrayItemViewForTest(SystemTrayItem* item) {
 689   std::map<SystemTrayItem*, views::View*>::iterator it =
 690       tray_item_map_.find(item);
 691   return it == tray_item_map_.end() ? NULL : it->second;
 692 }
 693
 694 TrayDate* SystemTray::GetTrayDateForTesting() const { return tray_date_; }
 695
 696 bool SystemTray::PerformAction(const ui::Event& event) {
 697   // If we're already showing the default view, hide it; otherwise, show it
 698   // (and hide any popup that's currently shown).
 699   if (HasSystemBubbleType(SystemTrayBubble::BUBBLE_TYPE_DEFAULT)) {
 700     system_bubble_->bubble()->Close();
 701   } else {
 702     int arrow_offset = TrayBubbleView::InitParams::kArrowDefaultOffset;
 703     if (event.IsMouseEvent() || event.type() == ui::ET_GESTURE_TAP) {
 704       const ui::LocatedEvent& located_event =
 705           static_cast<const ui::LocatedEvent&>(event);
 706       if (shelf_alignment() == SHELF_ALIGNMENT_BOTTOM ||
 707           shelf_alignment() == SHELF_ALIGNMENT_TOP) {
 708         gfx::Point point(located_event.x(), 0);
 709         ConvertPointToWidget(this, &point);
 710         arrow_offset = point.x();
 711       }
 712     }
 713     ShowDefaultViewWithOffset(BUBBLE_CREATE_NEW, arrow_offset, false);
 714   }
 715   return true;
 716 }
 717
 718 void SystemTray::CloseSystemBubbleAndDeactivateSystemTray() {
 719   system_bubble_.reset();
 720   // When closing a system bubble with the alternate shelf layout, we need to
 721   // turn off the active tinting of the shelf.
 722   if (full_system_tray_menu_) {
 723     SetDrawBackgroundAsActive(false);
 724     full_system_tray_menu_ = false;
 725   }
 726 }
 727
 728 }  // namespace ash