ash/root_window_controller.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/root_window_controller.h"
   6
   7 #include <queue>
   8 #include <vector>
   9
  10 #include "ash/ash_constants.h"
  11 #include "ash/ash_switches.h"
  12 #include "ash/desktop_background/desktop_background_controller.h"
  13 #include "ash/desktop_background/desktop_background_widget_controller.h"
  14 #include "ash/desktop_background/user_wallpaper_delegate.h"
  15 #include "ash/display/display_manager.h"
  16 #include "ash/focus_cycler.h"
  17 #include "ash/high_contrast/high_contrast_controller.h"
  18 #include "ash/host/ash_window_tree_host.h"
  19 #include "ash/root_window_settings.h"
  20 #include "ash/session/session_state_delegate.h"
  21 #include "ash/shelf/shelf_layout_manager.h"
  22 #include "ash/shelf/shelf_types.h"
  23 #include "ash/shelf/shelf_widget.h"
  24 #include "ash/shell.h"
  25 #include "ash/shell_delegate.h"
  26 #include "ash/shell_factory.h"
  27 #include "ash/shell_window_ids.h"
  28 #include "ash/switchable_windows.h"
  29 #include "ash/system/status_area_widget.h"
  30 #include "ash/system/tray/system_tray_delegate.h"
  31 #include "ash/touch/touch_hud_debug.h"
  32 #include "ash/touch/touch_hud_projection.h"
  33 #include "ash/touch/touch_observer_hud.h"
  34 #include "ash/wm/always_on_top_controller.h"
  35 #include "ash/wm/dock/docked_window_layout_manager.h"
  36 #include "ash/wm/panels/attached_panel_window_targeter.h"
  37 #include "ash/wm/panels/panel_layout_manager.h"
  38 #include "ash/wm/panels/panel_window_event_handler.h"
  39 #include "ash/wm/root_window_layout_manager.h"
  40 #include "ash/wm/screen_dimmer.h"
  41 #include "ash/wm/stacking_controller.h"
  42 #include "ash/wm/status_area_layout_manager.h"
  43 #include "ash/wm/system_background_controller.h"
  44 #include "ash/wm/system_modal_container_layout_manager.h"
  45 #include "ash/wm/window_properties.h"
  46 #include "ash/wm/window_state.h"
  47 #include "ash/wm/window_util.h"
  48 #include "ash/wm/workspace/workspace_layout_manager.h"
  49 #include "ash/wm/workspace_controller.h"
  50 #include "base/command_line.h"
  51 #include "base/time/time.h"
  52 #include "ui/aura/client/aura_constants.h"
  53 #include "ui/aura/client/screen_position_client.h"
  54 #include "ui/aura/window.h"
  55 #include "ui/aura/window_delegate.h"
  56 #include "ui/aura/window_event_dispatcher.h"
  57 #include "ui/aura/window_observer.h"
  58 #include "ui/aura/window_tracker.h"
  59 #include "ui/base/hit_test.h"
  60 #include "ui/base/models/menu_model.h"
  61 #include "ui/gfx/display.h"
  62 #include "ui/gfx/screen.h"
  63 #include "ui/keyboard/keyboard_controller.h"
  64 #include "ui/keyboard/keyboard_util.h"
  65 #include "ui/views/controls/menu/menu_runner.h"
  66 #include "ui/views/view_model.h"
  67 #include "ui/views/view_model_utils.h"
  68 #include "ui/wm/core/capture_controller.h"
  69 #include "ui/wm/core/easy_resize_window_targeter.h"
  70 #include "ui/wm/core/visibility_controller.h"
  71 #include "ui/wm/core/window_util.h"
  72 #include "ui/wm/public/drag_drop_client.h"
  73 #include "ui/wm/public/tooltip_client.h"
  74 #include "ui/wm/public/window_types.h"
  75
  76 #if defined(OS_CHROMEOS)
  77 #include "ash/wm/boot_splash_screen_chromeos.h"
  78 #endif
  79
  80 namespace ash {
  81 namespace {
  82
  83 #if defined(OS_CHROMEOS)
  84 // Duration for the animation that hides the boot splash screen, in
  85 // milliseconds.  This should be short enough in relation to
  86 // wm/window_animation.cc's brightness/grayscale fade animation that the login
  87 // background image animation isn't hidden by the splash screen animation.
  88 const int kBootSplashScreenHideDurationMs = 500;
  89 #endif
  90
  91 // Creates a new window for use as a container.
  92 aura::Window* CreateContainer(int window_id,
  93                               const char* name,
  94                               aura::Window* parent) {
  95   aura::Window* container = new aura::Window(NULL);
  96   container->set_id(window_id);
  97   container->SetName(name);
  98   container->Init(aura::WINDOW_LAYER_NOT_DRAWN);
  99   parent->AddChild(container);
 100   if (window_id != kShellWindowId_UnparentedControlContainer)
 101     container->Show();
 102   return container;
 103 }
 104
 105 float ToRelativeValue(int value, int src, int dst) {
 106   return static_cast<float>(value) / static_cast<float>(src) * dst;
 107 }
 108
 109 void MoveOriginRelativeToSize(const gfx::Size& src_size,
 110                                 const gfx::Size& dst_size,
 111                                 gfx::Rect* bounds_in_out) {
 112   gfx::Point origin = bounds_in_out->origin();
 113   bounds_in_out->set_origin(gfx::Point(
 114       ToRelativeValue(origin.x(), src_size.width(), dst_size.width()),
 115       ToRelativeValue(origin.y(), src_size.height(), dst_size.height())));
 116 }
 117
 118 // Reparents |window| to |new_parent|.
 119 void ReparentWindow(aura::Window* window, aura::Window* new_parent) {
 120   const gfx::Size src_size = window->parent()->bounds().size();
 121   const gfx::Size dst_size = new_parent->bounds().size();
 122   // Update the restore bounds to make it relative to the display.
 123   wm::WindowState* state = wm::GetWindowState(window);
 124   gfx::Rect restore_bounds;
 125   bool has_restore_bounds = state->HasRestoreBounds();
 126
 127   bool update_bounds = (state->IsNormalOrSnapped() || state->IsMinimized()) &&
 128                        new_parent->id() != kShellWindowId_DockedContainer;
 129   gfx::Rect local_bounds;
 130   if (update_bounds) {
 131     local_bounds = state->window()->bounds();
 132     MoveOriginRelativeToSize(src_size, dst_size, &local_bounds);
 133   }
 134
 135   if (has_restore_bounds) {
 136     restore_bounds = state->GetRestoreBoundsInParent();
 137     MoveOriginRelativeToSize(src_size, dst_size, &restore_bounds);
 138   }
 139
 140   new_parent->AddChild(window);
 141
 142   // Docked windows have bounds handled by the layout manager in AddChild().
 143   if (update_bounds)
 144     window->SetBounds(local_bounds);
 145
 146   if (has_restore_bounds)
 147     state->SetRestoreBoundsInParent(restore_bounds);
 148 }
 149
 150 // Reparents the appropriate set of windows from |src| to |dst|.
 151 void ReparentAllWindows(aura::Window* src, aura::Window* dst) {
 152   // Set of windows to move.
 153   const int kContainerIdsToMove[] = {
 154       kShellWindowId_DefaultContainer,
 155       kShellWindowId_DockedContainer,
 156       kShellWindowId_PanelContainer,
 157       kShellWindowId_AlwaysOnTopContainer,
 158       kShellWindowId_SystemModalContainer,
 159       kShellWindowId_LockSystemModalContainer,
 160       kShellWindowId_UnparentedControlContainer, };
 161   for (size_t i = 0; i < arraysize(kContainerIdsToMove); i++) {
 162     int id = kContainerIdsToMove[i];
 163     aura::Window* src_container = Shell::GetContainer(src, id);
 164     aura::Window* dst_container = Shell::GetContainer(dst, id);
 165     while (!src_container->children().empty()) {
 166       // Restart iteration from the source container windows each time as they
 167       // may change as a result of moving other windows.
 168       aura::Window::Windows::const_iterator iter =
 169           src_container->children().begin();
 170       while (iter != src_container->children().end() &&
 171              SystemModalContainerLayoutManager::IsModalBackground(*iter)) {
 172         ++iter;
 173       }
 174       // If the entire window list is modal background windows then stop.
 175       if (iter == src_container->children().end())
 176         break;
 177       ReparentWindow(*iter, dst_container);
 178     }
 179   }
 180 }
 181
 182 // Mark the container window so that a widget added to this container will
 183 // use the virtual screeen coordinates instead of parent.
 184 void SetUsesScreenCoordinates(aura::Window* container) {
 185   container->SetProperty(kUsesScreenCoordinatesKey, true);
 186 }
 187
 188 // Mark the container window so that a widget added to this container will
 189 // say in the same root window regardless of the bounds specified.
 190 void DescendantShouldStayInSameRootWindow(aura::Window* container) {
 191   container->SetProperty(kStayInSameRootWindowKey, true);
 192 }
 193
 194 void SetUsesEasyResizeTargeter(aura::Window* container) {
 195   gfx::Insets mouse_extend(-kResizeOutsideBoundsSize,
 196                            -kResizeOutsideBoundsSize,
 197                            -kResizeOutsideBoundsSize,
 198                            -kResizeOutsideBoundsSize);
 199   gfx::Insets touch_extend = mouse_extend.Scale(
 200       kResizeOutsideBoundsScaleForTouch);
 201   container->SetEventTargeter(scoped_ptr<ui::EventTargeter>(
 202       new ::wm::EasyResizeWindowTargeter(container, mouse_extend,
 203                                          touch_extend)));
 204 }
 205
 206 // A window delegate which does nothing. Used to create a window that
 207 // is a event target, but do nothing.
 208 class EmptyWindowDelegate : public aura::WindowDelegate {
 209  public:
 210   EmptyWindowDelegate() {}
 211   virtual ~EmptyWindowDelegate() {}
 212
 213   // aura::WindowDelegate overrides:
 214   virtual gfx::Size GetMinimumSize() const OVERRIDE {
 215     return gfx::Size();
 216   }
 217   virtual gfx::Size GetMaximumSize() const OVERRIDE {
 218     return gfx::Size();
 219   }
 220   virtual void OnBoundsChanged(const gfx::Rect& old_bounds,
 221                                const gfx::Rect& new_bounds) OVERRIDE {
 222   }
 223   virtual gfx::NativeCursor GetCursor(const gfx::Point& point) OVERRIDE {
 224     return gfx::kNullCursor;
 225   }
 226   virtual int GetNonClientComponent(
 227       const gfx::Point& point) const OVERRIDE {
 228     return HTNOWHERE;
 229   }
 230   virtual bool ShouldDescendIntoChildForEventHandling(
 231       aura::Window* child,
 232       const gfx::Point& location) OVERRIDE {
 233     return false;
 234   }
 235   virtual bool CanFocus() OVERRIDE {
 236     return false;
 237   }
 238   virtual void OnCaptureLost() OVERRIDE {
 239   }
 240   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE {
 241   }
 242   virtual void OnDeviceScaleFactorChanged(
 243       float device_scale_factor) OVERRIDE {
 244   }
 245   virtual void OnWindowDestroying(aura::Window* window) OVERRIDE {}
 246   virtual void OnWindowDestroyed(aura::Window* window) OVERRIDE {
 247     delete this;
 248   }
 249   virtual void OnWindowTargetVisibilityChanged(bool visible) OVERRIDE {
 250   }
 251   virtual bool HasHitTestMask() const OVERRIDE {
 252     return false;
 253   }
 254   virtual void GetHitTestMask(gfx::Path* mask) const OVERRIDE {}
 255
 256  private:
 257   DISALLOW_COPY_AND_ASSIGN(EmptyWindowDelegate);
 258 };
 259
 260 }  // namespace
 261
 262 void RootWindowController::CreateForPrimaryDisplay(AshWindowTreeHost* host) {
 263   RootWindowController* controller = new RootWindowController(host);
 264   controller->Init(RootWindowController::PRIMARY,
 265                    Shell::GetInstance()->delegate()->IsFirstRunAfterBoot());
 266 }
 267
 268 void RootWindowController::CreateForSecondaryDisplay(AshWindowTreeHost* host) {
 269   RootWindowController* controller = new RootWindowController(host);
 270   controller->Init(RootWindowController::SECONDARY, false /* first run */);
 271 }
 272
 273 void RootWindowController::CreateForVirtualKeyboardDisplay(
 274     AshWindowTreeHost* host) {
 275   RootWindowController* controller = new RootWindowController(host);
 276   controller->Init(RootWindowController::VIRTUAL_KEYBOARD,
 277                    false /* first run */);
 278 }
 279
 280 // static
 281 RootWindowController* RootWindowController::ForShelf(aura::Window* window) {
 282   return GetRootWindowController(window->GetRootWindow());
 283 }
 284
 285 // static
 286 RootWindowController* RootWindowController::ForWindow(
 287     const aura::Window* window) {
 288   return GetRootWindowController(window->GetRootWindow());
 289 }
 290
 291 // static
 292 RootWindowController* RootWindowController::ForTargetRootWindow() {
 293   return GetRootWindowController(Shell::GetTargetRootWindow());
 294 }
 295
 296 // static
 297 aura::Window* RootWindowController::GetContainerForWindow(
 298     aura::Window* window) {
 299   aura::Window* container = window->parent();
 300   while (container && container->type() != ui::wm::WINDOW_TYPE_UNKNOWN)
 301     container = container->parent();
 302   return container;
 303 }
 304
 305 RootWindowController::~RootWindowController() {
 306   Shutdown();
 307   ash_host_.reset();
 308   // The CaptureClient needs to be around for as long as the RootWindow is
 309   // valid.
 310   capture_client_.reset();
 311 }
 312
 313 aura::WindowTreeHost* RootWindowController::GetHost() {
 314   return ash_host_->AsWindowTreeHost();
 315 }
 316
 317 const aura::WindowTreeHost* RootWindowController::GetHost() const {
 318   return ash_host_->AsWindowTreeHost();
 319 }
 320
 321 aura::Window* RootWindowController::GetRootWindow() {
 322   return GetHost()->window();
 323 }
 324
 325 const aura::Window* RootWindowController::GetRootWindow() const {
 326   return GetHost()->window();
 327 }
 328
 329 void RootWindowController::SetWallpaperController(
 330     DesktopBackgroundWidgetController* controller) {
 331   wallpaper_controller_.reset(controller);
 332 }
 333
 334 void RootWindowController::SetAnimatingWallpaperController(
 335     AnimatingDesktopController* controller) {
 336   if (animating_wallpaper_controller_.get())
 337     animating_wallpaper_controller_->StopAnimating();
 338   animating_wallpaper_controller_.reset(controller);
 339 }
 340
 341 void RootWindowController::Shutdown() {
 342   Shell::GetInstance()->RemoveShellObserver(this);
 343
 344   if (animating_wallpaper_controller_.get())
 345     animating_wallpaper_controller_->StopAnimating();
 346   wallpaper_controller_.reset();
 347   animating_wallpaper_controller_.reset();
 348   aura::Window* root_window = GetRootWindow();
 349   // Change the target root window before closing child windows. If any child
 350   // being removed triggers a relayout of the shelf it will try to build a
 351   // window list adding windows from the target root window's containers which
 352   // may have already gone away.
 353   if (Shell::GetTargetRootWindow() == root_window) {
 354     Shell::GetInstance()->set_target_root_window(
 355         Shell::GetPrimaryRootWindow() == root_window
 356             ? NULL
 357             : Shell::GetPrimaryRootWindow());
 358   }
 359
 360   CloseChildWindows();
 361   GetRootWindowSettings(root_window)->controller = NULL;
 362   screen_dimmer_.reset();
 363   workspace_controller_.reset();
 364   // Forget with the display ID so that display lookup
 365   // ends up with invalid display.
 366   GetRootWindowSettings(root_window)->display_id =
 367       gfx::Display::kInvalidDisplayID;
 368   GetRootWindowSettings(root_window)->shutdown = true;
 369
 370   system_background_.reset();
 371   aura::client::SetScreenPositionClient(root_window, NULL);
 372 }
 373
 374 SystemModalContainerLayoutManager*
 375 RootWindowController::GetSystemModalLayoutManager(aura::Window* window) {
 376   aura::Window* modal_container = NULL;
 377   if (window) {
 378     aura::Window* window_container = GetContainerForWindow(window);
 379     if (window_container &&
 380         window_container->id() >= kShellWindowId_LockScreenContainer) {
 381       modal_container = GetContainer(kShellWindowId_LockSystemModalContainer);
 382     } else {
 383       modal_container = GetContainer(kShellWindowId_SystemModalContainer);
 384     }
 385   } else {
 386     int modal_window_id = Shell::GetInstance()->session_state_delegate()
 387         ->IsUserSessionBlocked() ? kShellWindowId_LockSystemModalContainer :
 388                                    kShellWindowId_SystemModalContainer;
 389     modal_container = GetContainer(modal_window_id);
 390   }
 391   return modal_container ? static_cast<SystemModalContainerLayoutManager*>(
 392       modal_container->layout_manager()) : NULL;
 393 }
 394
 395 aura::Window* RootWindowController::GetContainer(int container_id) {
 396   return GetRootWindow()->GetChildById(container_id);
 397 }
 398
 399 const aura::Window* RootWindowController::GetContainer(int container_id) const {
 400   return ash_host_->AsWindowTreeHost()->window()->GetChildById(container_id);
 401 }
 402
 403 void RootWindowController::ShowShelf() {
 404   if (!shelf_->shelf())
 405     return;
 406   shelf_->shelf()->SetVisible(true);
 407   shelf_->status_area_widget()->Show();
 408 }
 409
 410 void RootWindowController::OnShelfCreated() {
 411   if (panel_layout_manager_)
 412     panel_layout_manager_->SetShelf(shelf_->shelf());
 413   if (docked_layout_manager_) {
 414     docked_layout_manager_->SetShelf(shelf_->shelf());
 415     if (shelf_->shelf_layout_manager())
 416       docked_layout_manager_->AddObserver(shelf_->shelf_layout_manager());
 417   }
 418
 419   // Notify shell observers that the shelf has been created.
 420   Shell::GetInstance()->OnShelfCreatedForRootWindow(GetRootWindow());
 421 }
 422
 423 void RootWindowController::UpdateAfterLoginStatusChange(
 424     user::LoginStatus status) {
 425   if (status != user::LOGGED_IN_NONE)
 426     mouse_event_target_.reset();
 427   if (shelf_->status_area_widget())
 428     shelf_->status_area_widget()->UpdateAfterLoginStatusChange(status);
 429 }
 430
 431 void RootWindowController::HandleInitialDesktopBackgroundAnimationStarted() {
 432 #if defined(OS_CHROMEOS)
 433   if (CommandLine::ForCurrentProcess()->HasSwitch(
 434           switches::kAshAnimateFromBootSplashScreen) &&
 435       boot_splash_screen_.get()) {
 436     // Make the splash screen fade out so it doesn't obscure the desktop
 437     // wallpaper's brightness/grayscale animation.
 438     boot_splash_screen_->StartHideAnimation(
 439         base::TimeDelta::FromMilliseconds(kBootSplashScreenHideDurationMs));
 440   }
 441 #endif
 442 }
 443
 444 void RootWindowController::OnWallpaperAnimationFinished(views::Widget* widget) {
 445   // Make sure the wallpaper is visible.
 446   system_background_->SetColor(SK_ColorBLACK);
 447 #if defined(OS_CHROMEOS)
 448   boot_splash_screen_.reset();
 449 #endif
 450
 451   Shell::GetInstance()->user_wallpaper_delegate()->
 452       OnWallpaperAnimationFinished();
 453   // Only removes old component when wallpaper animation finished. If we
 454   // remove the old one before the new wallpaper is done fading in there will
 455   // be a white flash during the animation.
 456   if (animating_wallpaper_controller()) {
 457     DesktopBackgroundWidgetController* controller =
 458         animating_wallpaper_controller()->GetController(true);
 459     // |desktop_widget_| should be the same animating widget we try to move
 460     // to |kDesktopController|. Otherwise, we may close |desktop_widget_|
 461     // before move it to |kDesktopController|.
 462     DCHECK_EQ(controller->widget(), widget);
 463     // Release the old controller and close its background widget.
 464     SetWallpaperController(controller);
 465   }
 466 }
 467
 468 void RootWindowController::CloseChildWindows() {
 469   mouse_event_target_.reset();
 470
 471   // Deactivate keyboard container before closing child windows and shutting
 472   // down associated layout managers.
 473   DeactivateKeyboard(keyboard::KeyboardController::GetInstance());
 474
 475   // panel_layout_manager_ needs to be shut down before windows are destroyed.
 476   if (panel_layout_manager_) {
 477     panel_layout_manager_->Shutdown();
 478     panel_layout_manager_ = NULL;
 479   }
 480   // docked_layout_manager_ needs to be shut down before windows are destroyed.
 481   if (docked_layout_manager_) {
 482     if (shelf_ && shelf_->shelf_layout_manager())
 483       docked_layout_manager_->RemoveObserver(shelf_->shelf_layout_manager());
 484     docked_layout_manager_->Shutdown();
 485     docked_layout_manager_ = NULL;
 486   }
 487   aura::Window* root_window = GetRootWindow();
 488   aura::client::SetDragDropClient(root_window, NULL);
 489
 490   // TODO(harrym): Remove when Status Area Widget is a child view.
 491   if (shelf_) {
 492     shelf_->ShutdownStatusAreaWidget();
 493
 494     if (shelf_->shelf_layout_manager())
 495       shelf_->shelf_layout_manager()->PrepareForShutdown();
 496   }
 497
 498   // Close background widget first as it depends on tooltip.
 499   wallpaper_controller_.reset();
 500   animating_wallpaper_controller_.reset();
 501
 502   workspace_controller_.reset();
 503   aura::client::SetTooltipClient(root_window, NULL);
 504
 505   // Explicitly destroy top level windows. We do this as during part of
 506   // destruction such windows may query the RootWindow for state.
 507   std::queue<aura::Window*> non_toplevel_windows;
 508   non_toplevel_windows.push(root_window);
 509   while (!non_toplevel_windows.empty()) {
 510     aura::Window* non_toplevel_window = non_toplevel_windows.front();
 511     non_toplevel_windows.pop();
 512     aura::WindowTracker toplevel_windows;
 513     for (size_t i = 0; i < non_toplevel_window->children().size(); ++i) {
 514       aura::Window* child = non_toplevel_window->children()[i];
 515       if (!child->owned_by_parent())
 516         continue;
 517       if (child->delegate())
 518         toplevel_windows.Add(child);
 519       else
 520         non_toplevel_windows.push(child);
 521     }
 522     while (!toplevel_windows.windows().empty())
 523       delete *toplevel_windows.windows().begin();
 524   }
 525   // And then remove the containers.
 526   while (!root_window->children().empty()) {
 527     aura::Window* window = root_window->children()[0];
 528     if (window->owned_by_parent()) {
 529       delete window;
 530     } else {
 531       root_window->RemoveChild(window);
 532     }
 533   }
 534
 535   shelf_.reset();
 536 }
 537
 538 void RootWindowController::MoveWindowsTo(aura::Window* dst) {
 539   // Forget the shelf early so that shelf don't update itself using wrong
 540   // display info.
 541   workspace_controller_->SetShelf(NULL);
 542   ReparentAllWindows(GetRootWindow(), dst);
 543 }
 544
 545 ShelfLayoutManager* RootWindowController::GetShelfLayoutManager() {
 546   return shelf_->shelf_layout_manager();
 547 }
 548
 549 SystemTray* RootWindowController::GetSystemTray() {
 550   // We assume in throughout the code that this will not return NULL. If code
 551   // triggers this for valid reasons, it should test status_area_widget first.
 552   CHECK(shelf_->status_area_widget());
 553   return shelf_->status_area_widget()->system_tray();
 554 }
 555
 556 void RootWindowController::ShowContextMenu(const gfx::Point& location_in_screen,
 557                                            ui::MenuSourceType source_type) {
 558   DCHECK(Shell::GetInstance()->delegate());
 559   scoped_ptr<ui::MenuModel> menu_model(
 560       Shell::GetInstance()->delegate()->CreateContextMenu(
 561           GetRootWindow(), NULL, NULL));
 562   if (!menu_model)
 563     return;
 564
 565   // Background controller may not be set yet if user clicked on status are
 566   // before initial animation completion. See crbug.com/222218
 567   if (!wallpaper_controller_.get())
 568     return;
 569
 570   views::MenuRunner menu_runner(menu_model.get());
 571   if (menu_runner.RunMenuAt(wallpaper_controller_->widget(),
 572                             NULL,
 573                             gfx::Rect(location_in_screen, gfx::Size()),
 574                             views::MENU_ANCHOR_TOPLEFT,
 575                             source_type,
 576                             views::MenuRunner::CONTEXT_MENU) ==
 577       views::MenuRunner::MENU_DELETED) {
 578     return;
 579   }
 580
 581   Shell::GetInstance()->UpdateShelfVisibility();
 582 }
 583
 584 void RootWindowController::UpdateShelfVisibility() {
 585   shelf_->shelf_layout_manager()->UpdateVisibilityState();
 586 }
 587
 588 const aura::Window* RootWindowController::GetWindowForFullscreenMode() const {
 589   const aura::Window* topmost_window = NULL;
 590   const aura::Window* active_window = wm::GetActiveWindow();
 591   if (active_window && active_window->GetRootWindow() == GetRootWindow() &&
 592       IsSwitchableContainer(active_window->parent())) {
 593     // Use the active window when it is on the current root window to determine
 594     // the fullscreen state to allow temporarily using a panel or docked window
 595     // (which are always above the default container) while a fullscreen
 596     // window is open. We only use the active window when in a switchable
 597     // container as the launcher should not exit fullscreen mode.
 598     topmost_window = active_window;
 599   } else {
 600     // Otherwise, use the topmost window on the root window's default container
 601     // when there is no active window on this root window.
 602     const aura::Window::Windows& windows =
 603         GetContainer(kShellWindowId_DefaultContainer)->children();
 604     for (aura::Window::Windows::const_reverse_iterator iter = windows.rbegin();
 605          iter != windows.rend(); ++iter) {
 606       if (((*iter)->type() == ui::wm::WINDOW_TYPE_NORMAL ||
 607            (*iter)->type() == ui::wm::WINDOW_TYPE_PANEL) &&
 608           (*iter)->layer()->GetTargetVisibility()) {
 609         topmost_window = *iter;
 610         break;
 611       }
 612     }
 613   }
 614   while (topmost_window) {
 615     if (wm::GetWindowState(topmost_window)->IsFullscreen())
 616       return topmost_window;
 617     topmost_window = ::wm::GetTransientParent(topmost_window);
 618   }
 619   return NULL;
 620 }
 621
 622 void RootWindowController::ActivateKeyboard(
 623     keyboard::KeyboardController* keyboard_controller) {
 624   if (!keyboard::IsKeyboardEnabled() ||
 625       GetContainer(kShellWindowId_VirtualKeyboardContainer)) {
 626     return;
 627   }
 628   DCHECK(keyboard_controller);
 629   if (!keyboard::IsKeyboardUsabilityExperimentEnabled()) {
 630     keyboard_controller->AddObserver(shelf()->shelf_layout_manager());
 631     keyboard_controller->AddObserver(panel_layout_manager_);
 632     keyboard_controller->AddObserver(docked_layout_manager_);
 633     Shell::GetInstance()->delegate()->VirtualKeyboardActivated(true);
 634   }
 635   aura::Window* parent = GetContainer(
 636       kShellWindowId_VirtualKeyboardParentContainer);
 637   DCHECK(parent);
 638   aura::Window* keyboard_container =
 639       keyboard_controller->GetContainerWindow();
 640   keyboard_container->set_id(kShellWindowId_VirtualKeyboardContainer);
 641   parent->AddChild(keyboard_container);
 642   // TODO(oshima): Bounds of keyboard container should be handled by
 643   // RootWindowLayoutManager. Remove this after fixed RootWindowLayoutManager.
 644   keyboard_container->SetBounds(parent->bounds());
 645 }
 646
 647 void RootWindowController::DeactivateKeyboard(
 648     keyboard::KeyboardController* keyboard_controller) {
 649   if (!keyboard_controller ||
 650       !keyboard_controller->keyboard_container_initialized()) {
 651     return;
 652   }
 653   aura::Window* keyboard_container =
 654       keyboard_controller->GetContainerWindow();
 655   if (keyboard_container->GetRootWindow() == GetRootWindow()) {
 656     aura::Window* parent = GetContainer(
 657         kShellWindowId_VirtualKeyboardParentContainer);
 658     DCHECK(parent);
 659     parent->RemoveChild(keyboard_container);
 660     if (!keyboard::IsKeyboardUsabilityExperimentEnabled()) {
 661       // Virtual keyboard may be deactivated while still showing, notify all
 662       // observers that keyboard bounds changed to 0 before remove them.
 663       keyboard_controller->NotifyKeyboardBoundsChanging(gfx::Rect());
 664       keyboard_controller->RemoveObserver(shelf()->shelf_layout_manager());
 665       keyboard_controller->RemoveObserver(panel_layout_manager_);
 666       keyboard_controller->RemoveObserver(docked_layout_manager_);
 667       Shell::GetInstance()->delegate()->VirtualKeyboardActivated(false);
 668     }
 669   }
 670 }
 671
 672 bool RootWindowController::IsVirtualKeyboardWindow(aura::Window* window) {
 673   aura::Window* parent = GetContainer(
 674       kShellWindowId_VirtualKeyboardParentContainer);
 675   return parent ? parent->Contains(window) : false;
 676 }
 677
 678 ////////////////////////////////////////////////////////////////////////////////
 679 // RootWindowController, private:
 680
 681 RootWindowController::RootWindowController(AshWindowTreeHost* ash_host)
 682     : ash_host_(ash_host),
 683       root_window_layout_(NULL),
 684       docked_layout_manager_(NULL),
 685       panel_layout_manager_(NULL),
 686       touch_hud_debug_(NULL),
 687       touch_hud_projection_(NULL) {
 688   aura::Window* root_window = GetRootWindow();
 689   GetRootWindowSettings(root_window)->controller = this;
 690   screen_dimmer_.reset(new ScreenDimmer(root_window));
 691
 692   stacking_controller_.reset(new StackingController);
 693   aura::client::SetWindowTreeClient(root_window, stacking_controller_.get());
 694   capture_client_.reset(new ::wm::ScopedCaptureClient(root_window));
 695 }
 696
 697 void RootWindowController::Init(RootWindowType root_window_type,
 698                                 bool first_run_after_boot) {
 699   aura::Window* root_window = GetRootWindow();
 700   Shell* shell = Shell::GetInstance();
 701   shell->InitRootWindow(root_window);
 702
 703   ash_host_->AsWindowTreeHost()->SetCursor(ui::kCursorPointer);
 704   CreateContainersInRootWindow(root_window);
 705
 706   if (root_window_type == VIRTUAL_KEYBOARD) {
 707     aura::Window* virtual_keyboard_parent_container = GetContainer(
 708         kShellWindowId_VirtualKeyboardParentContainer);
 709     virtual_keyboard_parent_container->SetBounds(root_window->bounds());
 710     shell->InitKeyboard();
 711     return;
 712   }
 713
 714   CreateSystemBackground(first_run_after_boot);
 715
 716   InitLayoutManagers();
 717   InitTouchHuds();
 718
 719   if (Shell::GetPrimaryRootWindowController()->
 720       GetSystemModalLayoutManager(NULL)->has_modal_background()) {
 721     GetSystemModalLayoutManager(NULL)->CreateModalBackground();
 722   }
 723
 724   shell->AddShellObserver(this);
 725
 726   if (root_window_type == PRIMARY) {
 727     root_window_layout()->OnWindowResized();
 728     if (!keyboard::IsKeyboardUsabilityExperimentEnabled())
 729       shell->InitKeyboard();
 730   } else {
 731     root_window_layout()->OnWindowResized();
 732     ash_host_->AsWindowTreeHost()->Show();
 733
 734     // Create a shelf if a user is already logged in.
 735     if (shell->session_state_delegate()->NumberOfLoggedInUsers())
 736       shelf()->CreateShelf();
 737
 738     // Notify shell observers about new root window.
 739     shell->OnRootWindowAdded(root_window);
 740   }
 741 }
 742
 743 void RootWindowController::InitLayoutManagers() {
 744   aura::Window* root_window = GetRootWindow();
 745   root_window_layout_ = new RootWindowLayoutManager(root_window);
 746   root_window->SetLayoutManager(root_window_layout_);
 747
 748   aura::Window* default_container =
 749       GetContainer(kShellWindowId_DefaultContainer);
 750   // Workspace manager has its own layout managers.
 751   workspace_controller_.reset(
 752       new WorkspaceController(default_container));
 753
 754   aura::Window* always_on_top_container =
 755       GetContainer(kShellWindowId_AlwaysOnTopContainer);
 756   always_on_top_container->SetLayoutManager(
 757       new WorkspaceLayoutManager(always_on_top_container));
 758   always_on_top_controller_.reset(new AlwaysOnTopController);
 759   always_on_top_controller_->SetAlwaysOnTopContainer(always_on_top_container);
 760
 761   DCHECK(!shelf_.get());
 762   aura::Window* shelf_container = GetContainer(kShellWindowId_ShelfContainer);
 763   // TODO(harrym): Remove when status area is view.
 764   aura::Window* status_container = GetContainer(kShellWindowId_StatusContainer);
 765   shelf_.reset(new ShelfWidget(
 766       shelf_container, status_container, workspace_controller()));
 767
 768   if (!Shell::GetInstance()->session_state_delegate()->
 769       IsActiveUserSessionStarted()) {
 770     // This window exists only to be a event target on login screen.
 771     // It does not have to handle events, nor be visible.
 772     mouse_event_target_.reset(new aura::Window(new EmptyWindowDelegate));
 773     mouse_event_target_->Init(aura::WINDOW_LAYER_NOT_DRAWN);
 774
 775     aura::Window* lock_background_container =
 776         GetContainer(kShellWindowId_LockScreenBackgroundContainer);
 777     lock_background_container->AddChild(mouse_event_target_.get());
 778     mouse_event_target_->Show();
 779   }
 780
 781   // Create Docked windows layout manager
 782   aura::Window* docked_container = GetContainer(kShellWindowId_DockedContainer);
 783   docked_layout_manager_ =
 784       new DockedWindowLayoutManager(docked_container, workspace_controller());
 785   docked_container->SetLayoutManager(docked_layout_manager_);
 786
 787   // Create Panel layout manager
 788   aura::Window* panel_container = GetContainer(kShellWindowId_PanelContainer);
 789   panel_layout_manager_ = new PanelLayoutManager(panel_container);
 790   panel_container->SetLayoutManager(panel_layout_manager_);
 791   panel_container_handler_.reset(new PanelWindowEventHandler);
 792   panel_container->AddPreTargetHandler(panel_container_handler_.get());
 793
 794   // Install an AttachedPanelWindowTargeter on the panel container to make it
 795   // easier to correctly target shelf buttons with touch.
 796   gfx::Insets mouse_extend(-kResizeOutsideBoundsSize,
 797                            -kResizeOutsideBoundsSize,
 798                            -kResizeOutsideBoundsSize,
 799                            -kResizeOutsideBoundsSize);
 800   gfx::Insets touch_extend = mouse_extend.Scale(
 801       kResizeOutsideBoundsScaleForTouch);
 802   panel_container->SetEventTargeter(scoped_ptr<ui::EventTargeter>(
 803       new AttachedPanelWindowTargeter(panel_container,
 804                                       mouse_extend,
 805                                       touch_extend,
 806                                       panel_layout_manager_)));
 807 }
 808
 809 void RootWindowController::InitTouchHuds() {
 810   CommandLine* command_line = CommandLine::ForCurrentProcess();
 811   if (command_line->HasSwitch(switches::kAshTouchHud))
 812     set_touch_hud_debug(new TouchHudDebug(GetRootWindow()));
 813   if (Shell::GetInstance()->is_touch_hud_projection_enabled())
 814     EnableTouchHudProjection();
 815 }
 816
 817 void RootWindowController::CreateSystemBackground(
 818     bool is_first_run_after_boot) {
 819   SkColor color = SK_ColorBLACK;
 820 #if defined(OS_CHROMEOS)
 821   if (is_first_run_after_boot)
 822     color = kChromeOsBootColor;
 823 #endif
 824   system_background_.reset(
 825       new SystemBackgroundController(GetRootWindow(), color));
 826
 827 #if defined(OS_CHROMEOS)
 828   // Make a copy of the system's boot splash screen so we can composite it
 829   // onscreen until the desktop background is ready.
 830   if (is_first_run_after_boot &&
 831       (CommandLine::ForCurrentProcess()->HasSwitch(
 832            switches::kAshCopyHostBackgroundAtBoot) ||
 833        CommandLine::ForCurrentProcess()->HasSwitch(
 834            switches::kAshAnimateFromBootSplashScreen)))
 835     boot_splash_screen_.reset(new BootSplashScreen(GetHost()));
 836 #endif
 837 }
 838
 839 void RootWindowController::CreateContainersInRootWindow(
 840     aura::Window* root_window) {
 841   // These containers are just used by PowerButtonController to animate groups
 842   // of containers simultaneously without messing up the current transformations
 843   // on those containers. These are direct children of the root window; all of
 844   // the other containers are their children.
 845
 846   // The desktop background container is not part of the lock animation, so it
 847   // is not included in those animate groups.
 848   // When screen is locked desktop background is moved to lock screen background
 849   // container (moved back on unlock). We want to make sure that there's an
 850   // opaque layer occluding the non-lock-screen layers.
 851   aura::Window* desktop_background_container = CreateContainer(
 852       kShellWindowId_DesktopBackgroundContainer,
 853       "DesktopBackgroundContainer",
 854       root_window);
 855   ::wm::SetChildWindowVisibilityChangesAnimated(desktop_background_container);
 856
 857   aura::Window* non_lock_screen_containers = CreateContainer(
 858       kShellWindowId_NonLockScreenContainersContainer,
 859       "NonLockScreenContainersContainer",
 860       root_window);
 861
 862   aura::Window* lock_background_containers = CreateContainer(
 863       kShellWindowId_LockScreenBackgroundContainer,
 864       "LockScreenBackgroundContainer",
 865       root_window);
 866   ::wm::SetChildWindowVisibilityChangesAnimated(lock_background_containers);
 867
 868   aura::Window* lock_screen_containers = CreateContainer(
 869       kShellWindowId_LockScreenContainersContainer,
 870       "LockScreenContainersContainer",
 871       root_window);
 872   aura::Window* lock_screen_related_containers = CreateContainer(
 873       kShellWindowId_LockScreenRelatedContainersContainer,
 874       "LockScreenRelatedContainersContainer",
 875       root_window);
 876
 877   CreateContainer(kShellWindowId_UnparentedControlContainer,
 878                   "UnparentedControlContainer",
 879                   non_lock_screen_containers);
 880
 881   aura::Window* default_container = CreateContainer(
 882       kShellWindowId_DefaultContainer,
 883       "DefaultContainer",
 884       non_lock_screen_containers);
 885   ::wm::SetChildWindowVisibilityChangesAnimated(default_container);
 886   SetUsesScreenCoordinates(default_container);
 887   SetUsesEasyResizeTargeter(default_container);
 888
 889   aura::Window* always_on_top_container = CreateContainer(
 890       kShellWindowId_AlwaysOnTopContainer,
 891       "AlwaysOnTopContainer",
 892       non_lock_screen_containers);
 893   ::wm::SetChildWindowVisibilityChangesAnimated(always_on_top_container);
 894   SetUsesScreenCoordinates(always_on_top_container);
 895
 896   aura::Window* docked_container = CreateContainer(
 897       kShellWindowId_DockedContainer,
 898       "DockedContainer",
 899       non_lock_screen_containers);
 900   ::wm::SetChildWindowVisibilityChangesAnimated(docked_container);
 901   SetUsesScreenCoordinates(docked_container);
 902   SetUsesEasyResizeTargeter(docked_container);
 903
 904   aura::Window* shelf_container =
 905       CreateContainer(kShellWindowId_ShelfContainer,
 906                       "ShelfContainer",
 907                       non_lock_screen_containers);
 908   SetUsesScreenCoordinates(shelf_container);
 909   DescendantShouldStayInSameRootWindow(shelf_container);
 910
 911   aura::Window* panel_container = CreateContainer(
 912       kShellWindowId_PanelContainer,
 913       "PanelContainer",
 914       non_lock_screen_containers);
 915   SetUsesScreenCoordinates(panel_container);
 916
 917   aura::Window* shelf_bubble_container =
 918       CreateContainer(kShellWindowId_ShelfBubbleContainer,
 919                       "ShelfBubbleContainer",
 920                       non_lock_screen_containers);
 921   SetUsesScreenCoordinates(shelf_bubble_container);
 922   DescendantShouldStayInSameRootWindow(shelf_bubble_container);
 923
 924   aura::Window* app_list_container =
 925       CreateContainer(kShellWindowId_AppListContainer,
 926                       "AppListContainer",
 927                       non_lock_screen_containers);
 928   SetUsesScreenCoordinates(app_list_container);
 929
 930   aura::Window* modal_container = CreateContainer(
 931       kShellWindowId_SystemModalContainer,
 932       "SystemModalContainer",
 933       non_lock_screen_containers);
 934   modal_container->SetLayoutManager(
 935       new SystemModalContainerLayoutManager(modal_container));
 936   ::wm::SetChildWindowVisibilityChangesAnimated(modal_container);
 937   SetUsesScreenCoordinates(modal_container);
 938   SetUsesEasyResizeTargeter(modal_container);
 939
 940   // TODO(beng): Figure out if we can make this use
 941   // SystemModalContainerEventFilter instead of stops_event_propagation.
 942   aura::Window* lock_container = CreateContainer(
 943       kShellWindowId_LockScreenContainer,
 944       "LockScreenContainer",
 945       lock_screen_containers);
 946   lock_container->SetLayoutManager(new WorkspaceLayoutManager(lock_container));
 947   SetUsesScreenCoordinates(lock_container);
 948   // TODO(beng): stopsevents
 949
 950   aura::Window* lock_modal_container = CreateContainer(
 951       kShellWindowId_LockSystemModalContainer,
 952       "LockSystemModalContainer",
 953       lock_screen_containers);
 954   lock_modal_container->SetLayoutManager(
 955       new SystemModalContainerLayoutManager(lock_modal_container));
 956   ::wm::SetChildWindowVisibilityChangesAnimated(lock_modal_container);
 957   SetUsesScreenCoordinates(lock_modal_container);
 958   SetUsesEasyResizeTargeter(lock_modal_container);
 959
 960   aura::Window* status_container =
 961       CreateContainer(kShellWindowId_StatusContainer,
 962                       "StatusContainer",
 963                       lock_screen_related_containers);
 964   SetUsesScreenCoordinates(status_container);
 965   DescendantShouldStayInSameRootWindow(status_container);
 966
 967   aura::Window* settings_bubble_container = CreateContainer(
 968       kShellWindowId_SettingBubbleContainer,
 969       "SettingBubbleContainer",
 970       lock_screen_related_containers);
 971   ::wm::SetChildWindowVisibilityChangesAnimated(settings_bubble_container);
 972   SetUsesScreenCoordinates(settings_bubble_container);
 973   DescendantShouldStayInSameRootWindow(settings_bubble_container);
 974
 975   aura::Window* menu_container = CreateContainer(
 976       kShellWindowId_MenuContainer,
 977       "MenuContainer",
 978       lock_screen_related_containers);
 979   ::wm::SetChildWindowVisibilityChangesAnimated(menu_container);
 980   SetUsesScreenCoordinates(menu_container);
 981
 982   aura::Window* drag_drop_container = CreateContainer(
 983       kShellWindowId_DragImageAndTooltipContainer,
 984       "DragImageAndTooltipContainer",
 985       lock_screen_related_containers);
 986   ::wm::SetChildWindowVisibilityChangesAnimated(drag_drop_container);
 987   SetUsesScreenCoordinates(drag_drop_container);
 988
 989   aura::Window* overlay_container = CreateContainer(
 990       kShellWindowId_OverlayContainer,
 991       "OverlayContainer",
 992       lock_screen_related_containers);
 993   SetUsesScreenCoordinates(overlay_container);
 994
 995   aura::Window* virtual_keyboard_parent_container = CreateContainer(
 996       kShellWindowId_VirtualKeyboardParentContainer,
 997       "VirtualKeyboardParentContainer",
 998       root_window);
 999   SetUsesScreenCoordinates(virtual_keyboard_parent_container);
1000
1001 #if defined(OS_CHROMEOS)
1002   aura::Window* mouse_cursor_container = CreateContainer(
1003       kShellWindowId_MouseCursorContainer,
1004       "MouseCursorContainer",
1005       root_window);
1006   SetUsesScreenCoordinates(mouse_cursor_container);
1007 #endif
1008
1009   CreateContainer(kShellWindowId_PowerButtonAnimationContainer,
1010                   "PowerButtonAnimationContainer", root_window);
1011 }
1012
1013 void RootWindowController::EnableTouchHudProjection() {
1014   if (touch_hud_projection_)
1015     return;
1016   set_touch_hud_projection(new TouchHudProjection(GetRootWindow()));
1017 }
1018
1019 void RootWindowController::DisableTouchHudProjection() {
1020   if (!touch_hud_projection_)
1021     return;
1022   touch_hud_projection_->Remove();
1023 }
1024
1025 void RootWindowController::OnLoginStateChanged(user::LoginStatus status) {
1026   shelf_->shelf_layout_manager()->UpdateVisibilityState();
1027 }
1028
1029 void RootWindowController::OnTouchHudProjectionToggled(bool enabled) {
1030   if (enabled)
1031     EnableTouchHudProjection();
1032   else
1033     DisableTouchHudProjection();
1034 }
1035
1036 RootWindowController* GetRootWindowController(
1037     const aura::Window* root_window) {
1038   return root_window ? GetRootWindowSettings(root_window)->controller : NULL;
1039 }
1040
1041 }  // namespace ash