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/system/tray/system_tray_notifier.h"
  32 #include "ash/touch/touch_hud_debug.h"
  33 #include "ash/touch/touch_hud_projection.h"
  34 #include "ash/touch/touch_observer_hud.h"
  35 #include "ash/wm/always_on_top_controller.h"
  36 #include "ash/wm/dock/docked_window_layout_manager.h"
  37 #include "ash/wm/lock_layout_manager.h"
  38 #include "ash/wm/panels/attached_panel_window_targeter.h"
  39 #include "ash/wm/panels/panel_layout_manager.h"
  40 #include "ash/wm/panels/panel_window_event_handler.h"
  41 #include "ash/wm/root_window_layout_manager.h"
  42 #include "ash/wm/screen_dimmer.h"
  43 #include "ash/wm/stacking_controller.h"
  44 #include "ash/wm/status_area_layout_manager.h"
  45 #include "ash/wm/system_background_controller.h"
  46 #include "ash/wm/system_modal_container_layout_manager.h"
  47 #include "ash/wm/window_properties.h"
  48 #include "ash/wm/window_state.h"
  49 #include "ash/wm/window_util.h"
  50 #include "ash/wm/workspace/workspace_layout_manager.h"
  51 #include "ash/wm/workspace_controller.h"
  52 #include "base/command_line.h"
  53 #include "base/time/time.h"
  54 #include "ui/aura/client/aura_constants.h"
  55 #include "ui/aura/client/screen_position_client.h"
  56 #include "ui/aura/window.h"
  57 #include "ui/aura/window_delegate.h"
  58 #include "ui/aura/window_event_dispatcher.h"
  59 #include "ui/aura/window_observer.h"
  60 #include "ui/aura/window_tracker.h"
  61 #include "ui/base/hit_test.h"
  62 #include "ui/base/models/menu_model.h"
  63 #include "ui/gfx/display.h"
  64 #include "ui/gfx/screen.h"
  65 #include "ui/keyboard/keyboard_controller.h"
  66 #include "ui/keyboard/keyboard_util.h"
  67 #include "ui/views/controls/menu/menu_runner.h"
  68 #include "ui/views/view_model.h"
  69 #include "ui/views/view_model_utils.h"
  70 #include "ui/wm/core/capture_controller.h"
  71 #include "ui/wm/core/easy_resize_window_targeter.h"
  72 #include "ui/wm/core/visibility_controller.h"
  73 #include "ui/wm/core/window_util.h"
  74 #include "ui/wm/public/drag_drop_client.h"
  75 #include "ui/wm/public/tooltip_client.h"
  76 #include "ui/wm/public/window_types.h"
  77
  78 #if defined(OS_CHROMEOS)
  79 #include "ash/ash_touch_exploration_manager_chromeos.h"
  80 #include "ash/wm/boot_splash_screen_chromeos.h"
  81 #include "ui/chromeos/touch_exploration_controller.h"
  82 #endif
  83
  84 namespace ash {
  85 namespace {
  86
  87 #if defined(OS_CHROMEOS)
  88 // Duration for the animation that hides the boot splash screen, in
  89 // milliseconds.  This should be short enough in relation to
  90 // wm/window_animation.cc's brightness/grayscale fade animation that the login
  91 // background image animation isn't hidden by the splash screen animation.
  92 const int kBootSplashScreenHideDurationMs = 500;
  93 #endif
  94
  95 // Creates a new window for use as a container.
  96 aura::Window* CreateContainer(int window_id,
  97                               const char* name,
  98                               aura::Window* parent) {
  99   aura::Window* container = new aura::Window(NULL);
 100   container->set_id(window_id);
 101   container->SetName(name);
 102   container->Init(ui::LAYER_NOT_DRAWN);
 103   parent->AddChild(container);
 104   if (window_id != kShellWindowId_UnparentedControlContainer)
 105     container->Show();
 106   return container;
 107 }
 108
 109 float ToRelativeValue(int value, int src, int dst) {
 110   return static_cast<float>(value) / static_cast<float>(src) * dst;
 111 }
 112
 113 void MoveOriginRelativeToSize(const gfx::Size& src_size,
 114                                 const gfx::Size& dst_size,
 115                                 gfx::Rect* bounds_in_out) {
 116   gfx::Point origin = bounds_in_out->origin();
 117   bounds_in_out->set_origin(gfx::Point(
 118       ToRelativeValue(origin.x(), src_size.width(), dst_size.width()),
 119       ToRelativeValue(origin.y(), src_size.height(), dst_size.height())));
 120 }
 121
 122 // Reparents |window| to |new_parent|.
 123 void ReparentWindow(aura::Window* window, aura::Window* new_parent) {
 124   const gfx::Size src_size = window->parent()->bounds().size();
 125   const gfx::Size dst_size = new_parent->bounds().size();
 126   // Update the restore bounds to make it relative to the display.
 127   wm::WindowState* state = wm::GetWindowState(window);
 128   gfx::Rect restore_bounds;
 129   bool has_restore_bounds = state->HasRestoreBounds();
 130
 131   bool update_bounds = (state->IsNormalOrSnapped() || state->IsMinimized()) &&
 132                        new_parent->id() != kShellWindowId_DockedContainer;
 133   gfx::Rect local_bounds;
 134   if (update_bounds) {
 135     local_bounds = state->window()->bounds();
 136     MoveOriginRelativeToSize(src_size, dst_size, &local_bounds);
 137   }
 138
 139   if (has_restore_bounds) {
 140     restore_bounds = state->GetRestoreBoundsInParent();
 141     MoveOriginRelativeToSize(src_size, dst_size, &restore_bounds);
 142   }
 143
 144   new_parent->AddChild(window);
 145
 146   // Docked windows have bounds handled by the layout manager in AddChild().
 147   if (update_bounds)
 148     window->SetBounds(local_bounds);
 149
 150   if (has_restore_bounds)
 151     state->SetRestoreBoundsInParent(restore_bounds);
 152 }
 153
 154 // Reparents the appropriate set of windows from |src| to |dst|.
 155 void ReparentAllWindows(aura::Window* src, aura::Window* dst) {
 156   // Set of windows to move.
 157   const int kContainerIdsToMove[] = {
 158       kShellWindowId_DefaultContainer,
 159       kShellWindowId_DockedContainer,
 160       kShellWindowId_PanelContainer,
 161       kShellWindowId_AlwaysOnTopContainer,
 162       kShellWindowId_SystemModalContainer,
 163       kShellWindowId_LockSystemModalContainer,
 164       kShellWindowId_UnparentedControlContainer,
 165       kShellWindowId_OverlayContainer, };
 166   for (size_t i = 0; i < arraysize(kContainerIdsToMove); i++) {
 167     int id = kContainerIdsToMove[i];
 168     aura::Window* src_container = Shell::GetContainer(src, id);
 169     aura::Window* dst_container = Shell::GetContainer(dst, id);
 170     while (!src_container->children().empty()) {
 171       // Restart iteration from the source container windows each time as they
 172       // may change as a result of moving other windows.
 173       aura::Window::Windows::const_iterator iter =
 174           src_container->children().begin();
 175       while (iter != src_container->children().end() &&
 176              SystemModalContainerLayoutManager::IsModalBackground(*iter)) {
 177         ++iter;
 178       }
 179       // If the entire window list is modal background windows then stop.
 180       if (iter == src_container->children().end())
 181         break;
 182       ReparentWindow(*iter, dst_container);
 183     }
 184   }
 185 }
 186
 187 // Mark the container window so that a widget added to this container will
 188 // use the virtual screeen coordinates instead of parent.
 189 void SetUsesScreenCoordinates(aura::Window* container) {
 190   container->SetProperty(kUsesScreenCoordinatesKey, true);
 191 }
 192
 193 // Mark the container window so that a widget added to this container will
 194 // say in the same root window regardless of the bounds specified.
 195 void DescendantShouldStayInSameRootWindow(aura::Window* container) {
 196   container->SetProperty(kStayInSameRootWindowKey, true);
 197 }
 198
 199 void SetUsesEasyResizeTargeter(aura::Window* container) {
 200   gfx::Insets mouse_extend(-kResizeOutsideBoundsSize,
 201                            -kResizeOutsideBoundsSize,
 202                            -kResizeOutsideBoundsSize,
 203                            -kResizeOutsideBoundsSize);
 204   gfx::Insets touch_extend = mouse_extend.Scale(
 205       kResizeOutsideBoundsScaleForTouch);
 206   container->SetEventTargeter(scoped_ptr<ui::EventTargeter>(
 207       new ::wm::EasyResizeWindowTargeter(container, mouse_extend,
 208                                          touch_extend)));
 209 }
 210
 211 // A window delegate which does nothing. Used to create a window that
 212 // is a event target, but do nothing.
 213 class EmptyWindowDelegate : public aura::WindowDelegate {
 214  public:
 215   EmptyWindowDelegate() {}
 216   ~EmptyWindowDelegate() override {}
 217
 218   // aura::WindowDelegate overrides:
 219   gfx::Size GetMinimumSize() const override { return gfx::Size(); }
 220   gfx::Size GetMaximumSize() const override { return gfx::Size(); }
 221   void OnBoundsChanged(const gfx::Rect& old_bounds,
 222                        const gfx::Rect& new_bounds) override {}
 223   ui::TextInputClient* GetFocusedTextInputClient() override { return nullptr; }
 224   gfx::NativeCursor GetCursor(const gfx::Point& point) override {
 225     return gfx::kNullCursor;
 226   }
 227   int GetNonClientComponent(const gfx::Point& point) const override {
 228     return HTNOWHERE;
 229   }
 230   bool ShouldDescendIntoChildForEventHandling(
 231       aura::Window* child,
 232       const gfx::Point& location) override {
 233     return false;
 234   }
 235   bool CanFocus() override { return false; }
 236   void OnCaptureLost() override {}
 237   void OnPaint(const ui::PaintContext& context) override {}
 238   void OnDeviceScaleFactorChanged(float device_scale_factor) override {}
 239   void OnWindowDestroying(aura::Window* window) override {}
 240   void OnWindowDestroyed(aura::Window* window) override { delete this; }
 241   void OnWindowTargetVisibilityChanged(bool visible) override {}
 242   bool HasHitTestMask() const override { return false; }
 243   void GetHitTestMask(gfx::Path* mask) const override {}
 244
 245  private:
 246   DISALLOW_COPY_AND_ASSIGN(EmptyWindowDelegate);
 247 };
 248
 249 }  // namespace
 250
 251 void RootWindowController::CreateForPrimaryDisplay(AshWindowTreeHost* host) {
 252   RootWindowController* controller = new RootWindowController(host);
 253   controller->Init(RootWindowController::PRIMARY,
 254                    Shell::GetInstance()->delegate()->IsFirstRunAfterBoot());
 255 }
 256
 257 void RootWindowController::CreateForSecondaryDisplay(AshWindowTreeHost* host) {
 258   RootWindowController* controller = new RootWindowController(host);
 259   controller->Init(RootWindowController::SECONDARY, false /* first run */);
 260 }
 261
 262 // static
 263 RootWindowController* RootWindowController::ForShelf(
 264     const aura::Window* window) {
 265   CHECK(Shell::HasInstance());
 266   return GetRootWindowController(window->GetRootWindow());
 267 }
 268
 269 // static
 270 RootWindowController* RootWindowController::ForWindow(
 271     const aura::Window* window) {
 272   CHECK(Shell::HasInstance());
 273   return GetRootWindowController(window->GetRootWindow());
 274 }
 275
 276 // static
 277 RootWindowController* RootWindowController::ForTargetRootWindow() {
 278   CHECK(Shell::HasInstance());
 279   return GetRootWindowController(Shell::GetTargetRootWindow());
 280 }
 281
 282 // static
 283 aura::Window* RootWindowController::GetContainerForWindow(
 284     aura::Window* window) {
 285   aura::Window* container = window->parent();
 286   while (container && container->type() != ui::wm::WINDOW_TYPE_UNKNOWN)
 287     container = container->parent();
 288   return container;
 289 }
 290
 291 RootWindowController::~RootWindowController() {
 292   Shutdown();
 293   ash_host_.reset();
 294   // The CaptureClient needs to be around for as long as the RootWindow is
 295   // valid.
 296   capture_client_.reset();
 297 }
 298
 299 aura::WindowTreeHost* RootWindowController::GetHost() {
 300   return ash_host_->AsWindowTreeHost();
 301 }
 302
 303 const aura::WindowTreeHost* RootWindowController::GetHost() const {
 304   return ash_host_->AsWindowTreeHost();
 305 }
 306
 307 aura::Window* RootWindowController::GetRootWindow() {
 308   return GetHost()->window();
 309 }
 310
 311 const aura::Window* RootWindowController::GetRootWindow() const {
 312   return GetHost()->window();
 313 }
 314
 315 void RootWindowController::SetWallpaperController(
 316     DesktopBackgroundWidgetController* controller) {
 317   wallpaper_controller_.reset(controller);
 318 }
 319
 320 void RootWindowController::SetAnimatingWallpaperController(
 321     AnimatingDesktopController* controller) {
 322   if (animating_wallpaper_controller_.get())
 323     animating_wallpaper_controller_->StopAnimating();
 324   animating_wallpaper_controller_.reset(controller);
 325 }
 326
 327 void RootWindowController::Shutdown() {
 328   Shell* shell = Shell::GetInstance();
 329   shell->RemoveShellObserver(this);
 330
 331 #if defined(OS_CHROMEOS)
 332   if (touch_exploration_manager_) {
 333     touch_exploration_manager_.reset();
 334   }
 335 #endif
 336
 337   if (animating_wallpaper_controller_.get())
 338     animating_wallpaper_controller_->StopAnimating();
 339   wallpaper_controller_.reset();
 340   animating_wallpaper_controller_.reset();
 341   aura::Window* root_window = GetRootWindow();
 342   // Change the target root window before closing child windows. If any child
 343   // being removed triggers a relayout of the shelf it will try to build a
 344   // window list adding windows from the target root window's containers which
 345   // may have already gone away.
 346   if (Shell::GetTargetRootWindow() == root_window) {
 347     shell->set_target_root_window(
 348         Shell::GetPrimaryRootWindow() == root_window
 349             ? NULL
 350             : Shell::GetPrimaryRootWindow());
 351   }
 352
 353   CloseChildWindows();
 354   GetRootWindowSettings(root_window)->controller = NULL;
 355   screen_dimmer_.reset();
 356   workspace_controller_.reset();
 357   // Forget with the display ID so that display lookup
 358   // ends up with invalid display.
 359   GetRootWindowSettings(root_window)->display_id =
 360       gfx::Display::kInvalidDisplayID;
 361   ash_host_->PrepareForShutdown();
 362
 363   system_background_.reset();
 364   aura::client::SetScreenPositionClient(root_window, NULL);
 365 }
 366
 367 SystemModalContainerLayoutManager*
 368 RootWindowController::GetSystemModalLayoutManager(aura::Window* window) {
 369   aura::Window* modal_container = NULL;
 370   if (window) {
 371     aura::Window* window_container = GetContainerForWindow(window);
 372     if (window_container &&
 373         window_container->id() >= kShellWindowId_LockScreenContainer) {
 374       modal_container = GetContainer(kShellWindowId_LockSystemModalContainer);
 375     } else {
 376       modal_container = GetContainer(kShellWindowId_SystemModalContainer);
 377     }
 378   } else {
 379     int modal_window_id = Shell::GetInstance()->session_state_delegate()
 380         ->IsUserSessionBlocked() ? kShellWindowId_LockSystemModalContainer :
 381                                    kShellWindowId_SystemModalContainer;
 382     modal_container = GetContainer(modal_window_id);
 383   }
 384   return modal_container ? static_cast<SystemModalContainerLayoutManager*>(
 385       modal_container->layout_manager()) : NULL;
 386 }
 387
 388 aura::Window* RootWindowController::GetContainer(int container_id) {
 389   return GetRootWindow()->GetChildById(container_id);
 390 }
 391
 392 const aura::Window* RootWindowController::GetContainer(int container_id) const {
 393   return ash_host_->AsWindowTreeHost()->window()->GetChildById(container_id);
 394 }
 395
 396 void RootWindowController::ShowShelf() {
 397   if (!shelf_->shelf())
 398     return;
 399   shelf_->shelf()->SetVisible(true);
 400   shelf_->status_area_widget()->Show();
 401 }
 402
 403 void RootWindowController::OnShelfCreated() {
 404   if (panel_layout_manager_)
 405     panel_layout_manager_->SetShelf(shelf_->shelf());
 406   if (docked_layout_manager_) {
 407     docked_layout_manager_->SetShelf(shelf_->shelf());
 408     if (shelf_->shelf_layout_manager())
 409       docked_layout_manager_->AddObserver(shelf_->shelf_layout_manager());
 410   }
 411
 412   // Notify shell observers that the shelf has been created.
 413   Shell::GetInstance()->OnShelfCreatedForRootWindow(GetRootWindow());
 414 }
 415
 416 void RootWindowController::UpdateAfterLoginStatusChange(
 417     user::LoginStatus status) {
 418   if (status != user::LOGGED_IN_NONE)
 419     mouse_event_target_.reset();
 420   if (shelf_->status_area_widget())
 421     shelf_->status_area_widget()->UpdateAfterLoginStatusChange(status);
 422 }
 423
 424 void RootWindowController::HandleInitialDesktopBackgroundAnimationStarted() {
 425 #if defined(OS_CHROMEOS)
 426   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
 427           switches::kAshAnimateFromBootSplashScreen) &&
 428       boot_splash_screen_.get()) {
 429     // Make the splash screen fade out so it doesn't obscure the desktop
 430     // wallpaper's brightness/grayscale animation.
 431     boot_splash_screen_->StartHideAnimation(
 432         base::TimeDelta::FromMilliseconds(kBootSplashScreenHideDurationMs));
 433   }
 434 #endif
 435 }
 436
 437 void RootWindowController::OnWallpaperAnimationFinished(views::Widget* widget) {
 438   // Make sure the wallpaper is visible.
 439   system_background_->SetColor(SK_ColorBLACK);
 440 #if defined(OS_CHROMEOS)
 441   boot_splash_screen_.reset();
 442 #endif
 443
 444   Shell::GetInstance()->user_wallpaper_delegate()->
 445       OnWallpaperAnimationFinished();
 446   // Only removes old component when wallpaper animation finished. If we
 447   // remove the old one before the new wallpaper is done fading in there will
 448   // be a white flash during the animation.
 449   if (animating_wallpaper_controller()) {
 450     DesktopBackgroundWidgetController* controller =
 451         animating_wallpaper_controller()->GetController(true);
 452     // |desktop_widget_| should be the same animating widget we try to move
 453     // to |kDesktopController|. Otherwise, we may close |desktop_widget_|
 454     // before move it to |kDesktopController|.
 455     DCHECK_EQ(controller->widget(), widget);
 456     // Release the old controller and close its background widget.
 457     SetWallpaperController(controller);
 458   }
 459 }
 460
 461 void RootWindowController::CloseChildWindows() {
 462   mouse_event_target_.reset();
 463
 464   // Remove observer as deactivating keyboard causes |docked_layout_manager_|
 465   // to fire notifications.
 466   if (docked_layout_manager_ && shelf_ && shelf_->shelf_layout_manager())
 467     docked_layout_manager_->RemoveObserver(shelf_->shelf_layout_manager());
 468
 469   // Deactivate keyboard container before closing child windows and shutting
 470   // down associated layout managers.
 471   DeactivateKeyboard(keyboard::KeyboardController::GetInstance());
 472
 473   // panel_layout_manager_ needs to be shut down before windows are destroyed.
 474   if (panel_layout_manager_) {
 475     panel_layout_manager_->Shutdown();
 476     panel_layout_manager_ = NULL;
 477   }
 478   // docked_layout_manager_ needs to be shut down before windows are destroyed.
 479   if (docked_layout_manager_) {
 480     docked_layout_manager_->Shutdown();
 481     docked_layout_manager_ = NULL;
 482   }
 483   aura::Window* root_window = GetRootWindow();
 484   aura::client::SetDragDropClient(root_window, NULL);
 485
 486   // TODO(harrym): Remove when Status Area Widget is a child view.
 487   if (shelf_) {
 488     shelf_->ShutdownStatusAreaWidget();
 489
 490     if (shelf_->shelf_layout_manager())
 491       shelf_->shelf_layout_manager()->PrepareForShutdown();
 492   }
 493
 494   // Close background widget first as it depends on tooltip.
 495   wallpaper_controller_.reset();
 496   animating_wallpaper_controller_.reset();
 497
 498   workspace_controller_.reset();
 499   aura::client::SetTooltipClient(root_window, NULL);
 500
 501   // Explicitly destroy top level windows. We do this as during part of
 502   // destruction such windows may query the RootWindow for state.
 503   std::queue<aura::Window*> non_toplevel_windows;
 504   non_toplevel_windows.push(root_window);
 505   while (!non_toplevel_windows.empty()) {
 506     aura::Window* non_toplevel_window = non_toplevel_windows.front();
 507     non_toplevel_windows.pop();
 508     aura::WindowTracker toplevel_windows;
 509     for (size_t i = 0; i < non_toplevel_window->children().size(); ++i) {
 510       aura::Window* child = non_toplevel_window->children()[i];
 511       if (!child->owned_by_parent())
 512         continue;
 513       if (child->delegate())
 514         toplevel_windows.Add(child);
 515       else
 516         non_toplevel_windows.push(child);
 517     }
 518     while (!toplevel_windows.windows().empty())
 519       delete *toplevel_windows.windows().begin();
 520   }
 521   // And then remove the containers.
 522   while (!root_window->children().empty()) {
 523     aura::Window* window = root_window->children()[0];
 524     if (window->owned_by_parent()) {
 525       delete window;
 526     } else {
 527       root_window->RemoveChild(window);
 528     }
 529   }
 530
 531   shelf_.reset();
 532 }
 533
 534 void RootWindowController::MoveWindowsTo(aura::Window* dst) {
 535   // Forget the shelf early so that shelf don't update itself using wrong
 536   // display info.
 537   workspace_controller_->SetShelf(NULL);
 538   ReparentAllWindows(GetRootWindow(), dst);
 539 }
 540
 541 ShelfLayoutManager* RootWindowController::GetShelfLayoutManager() {
 542   return shelf_->shelf_layout_manager();
 543 }
 544
 545 SystemTray* RootWindowController::GetSystemTray() {
 546   // We assume in throughout the code that this will not return NULL. If code
 547   // triggers this for valid reasons, it should test status_area_widget first.
 548   CHECK(shelf_->status_area_widget());
 549   return shelf_->status_area_widget()->system_tray();
 550 }
 551
 552 void RootWindowController::ShowContextMenu(const gfx::Point& location_in_screen,
 553                                            ui::MenuSourceType source_type) {
 554   DCHECK(Shell::GetInstance()->delegate());
 555   scoped_ptr<ui::MenuModel> menu_model(
 556       Shell::GetInstance()->delegate()->CreateContextMenu(
 557           GetRootWindow(), NULL, NULL));
 558   if (!menu_model)
 559     return;
 560
 561   // Background controller may not be set yet if user clicked on status are
 562   // before initial animation completion. See crbug.com/222218
 563   if (!wallpaper_controller_.get())
 564     return;
 565
 566   views::MenuRunner menu_runner(menu_model.get(),
 567                                 views::MenuRunner::CONTEXT_MENU);
 568   if (menu_runner.RunMenuAt(wallpaper_controller_->widget(),
 569                             NULL,
 570                             gfx::Rect(location_in_screen, gfx::Size()),
 571                             views::MENU_ANCHOR_TOPLEFT,
 572                             source_type) == views::MenuRunner::MENU_DELETED) {
 573     return;
 574   }
 575
 576   Shell::GetInstance()->UpdateShelfVisibility();
 577 }
 578
 579 void RootWindowController::UpdateShelfVisibility() {
 580   shelf_->shelf_layout_manager()->UpdateVisibilityState();
 581 }
 582
 583 const aura::Window* RootWindowController::GetWindowForFullscreenMode() const {
 584   const aura::Window* topmost_window = NULL;
 585   const aura::Window* active_window = wm::GetActiveWindow();
 586   if (active_window && active_window->GetRootWindow() == GetRootWindow() &&
 587       IsSwitchableContainer(active_window->parent())) {
 588     // Use the active window when it is on the current root window to determine
 589     // the fullscreen state to allow temporarily using a panel or docked window
 590     // (which are always above the default container) while a fullscreen
 591     // window is open. We only use the active window when in a switchable
 592     // container as the launcher should not exit fullscreen mode.
 593     topmost_window = active_window;
 594   } else {
 595     // Otherwise, use the topmost window on the root window's default container
 596     // when there is no active window on this root window.
 597     const aura::Window::Windows& windows =
 598         GetContainer(kShellWindowId_DefaultContainer)->children();
 599     for (aura::Window::Windows::const_reverse_iterator iter = windows.rbegin();
 600          iter != windows.rend(); ++iter) {
 601       if (((*iter)->type() == ui::wm::WINDOW_TYPE_NORMAL ||
 602            (*iter)->type() == ui::wm::WINDOW_TYPE_PANEL) &&
 603           (*iter)->layer()->GetTargetVisibility()) {
 604         topmost_window = *iter;
 605         break;
 606       }
 607     }
 608   }
 609   while (topmost_window) {
 610     if (wm::GetWindowState(topmost_window)->IsFullscreen())
 611       return topmost_window;
 612     topmost_window = ::wm::GetTransientParent(topmost_window);
 613   }
 614   return NULL;
 615 }
 616
 617 void RootWindowController::ActivateKeyboard(
 618     keyboard::KeyboardController* keyboard_controller) {
 619   if (!keyboard::IsKeyboardEnabled() ||
 620       GetContainer(kShellWindowId_VirtualKeyboardContainer)) {
 621     return;
 622   }
 623   DCHECK(keyboard_controller);
 624   keyboard_controller->AddObserver(shelf()->shelf_layout_manager());
 625   keyboard_controller->AddObserver(panel_layout_manager_);
 626   keyboard_controller->AddObserver(docked_layout_manager_);
 627   keyboard_controller->AddObserver(workspace_controller_->layout_manager());
 628   keyboard_controller->AddObserver(
 629       always_on_top_controller_->GetLayoutManager());
 630   Shell::GetInstance()->delegate()->VirtualKeyboardActivated(true);
 631   aura::Window* parent = GetContainer(kShellWindowId_ImeWindowParentContainer);
 632   DCHECK(parent);
 633   aura::Window* keyboard_container =
 634       keyboard_controller->GetContainerWindow();
 635   keyboard_container->set_id(kShellWindowId_VirtualKeyboardContainer);
 636   parent->AddChild(keyboard_container);
 637 }
 638
 639 void RootWindowController::DeactivateKeyboard(
 640     keyboard::KeyboardController* keyboard_controller) {
 641   if (!keyboard_controller ||
 642       !keyboard_controller->keyboard_container_initialized()) {
 643     return;
 644   }
 645   aura::Window* keyboard_container =
 646       keyboard_controller->GetContainerWindow();
 647   if (keyboard_container->GetRootWindow() == GetRootWindow()) {
 648     aura::Window* parent =
 649         GetContainer(kShellWindowId_ImeWindowParentContainer);
 650     DCHECK(parent);
 651     parent->RemoveChild(keyboard_container);
 652     // Virtual keyboard may be deactivated while still showing, notify all
 653     // observers that keyboard bounds changed to 0 before remove them.
 654     keyboard_controller->NotifyKeyboardBoundsChanging(gfx::Rect());
 655     keyboard_controller->RemoveObserver(shelf()->shelf_layout_manager());
 656     keyboard_controller->RemoveObserver(panel_layout_manager_);
 657     keyboard_controller->RemoveObserver(docked_layout_manager_);
 658     keyboard_controller->RemoveObserver(
 659         workspace_controller_->layout_manager());
 660     keyboard_controller->RemoveObserver(
 661         always_on_top_controller_->GetLayoutManager());
 662     Shell::GetInstance()->delegate()->VirtualKeyboardActivated(false);
 663   }
 664 }
 665
 666 bool RootWindowController::IsVirtualKeyboardWindow(aura::Window* window) {
 667   aura::Window* parent = GetContainer(kShellWindowId_ImeWindowParentContainer);
 668   return parent ? parent->Contains(window) : false;
 669 }
 670
 671 ////////////////////////////////////////////////////////////////////////////////
 672 // RootWindowController, private:
 673
 674 RootWindowController::RootWindowController(AshWindowTreeHost* ash_host)
 675     : ash_host_(ash_host),
 676       root_window_layout_(NULL),
 677       docked_layout_manager_(NULL),
 678       panel_layout_manager_(NULL),
 679       touch_hud_debug_(NULL),
 680       touch_hud_projection_(NULL) {
 681   aura::Window* root_window = GetRootWindow();
 682   GetRootWindowSettings(root_window)->controller = this;
 683   screen_dimmer_.reset(new ScreenDimmer(root_window));
 684
 685   stacking_controller_.reset(new StackingController);
 686   aura::client::SetWindowTreeClient(root_window, stacking_controller_.get());
 687   capture_client_.reset(new ::wm::ScopedCaptureClient(root_window));
 688 }
 689
 690 void RootWindowController::Init(RootWindowType root_window_type,
 691                                 bool first_run_after_boot) {
 692   aura::Window* root_window = GetRootWindow();
 693   Shell* shell = Shell::GetInstance();
 694   shell->InitRootWindow(root_window);
 695
 696   ash_host_->AsWindowTreeHost()->SetCursor(ui::kCursorPointer);
 697   CreateContainersInRootWindow(root_window);
 698
 699   CreateSystemBackground(first_run_after_boot);
 700
 701   InitLayoutManagers();
 702   InitTouchHuds();
 703
 704   if (Shell::GetPrimaryRootWindowController()->
 705       GetSystemModalLayoutManager(NULL)->has_modal_background()) {
 706     GetSystemModalLayoutManager(NULL)->CreateModalBackground();
 707   }
 708
 709   shell->AddShellObserver(this);
 710
 711   if (root_window_type == PRIMARY) {
 712     root_window_layout()->OnWindowResized();
 713     shell->InitKeyboard();
 714   } else {
 715     root_window_layout()->OnWindowResized();
 716     ash_host_->AsWindowTreeHost()->Show();
 717
 718     // Create a shelf if a user is already logged in.
 719     if (shell->session_state_delegate()->NumberOfLoggedInUsers())
 720       shelf()->CreateShelf();
 721
 722     // Notify shell observers about new root window.
 723     shell->OnRootWindowAdded(root_window);
 724   }
 725
 726 #if defined(OS_CHROMEOS)
 727   if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
 728           switches::kAshDisableTouchExplorationMode)) {
 729     touch_exploration_manager_.reset(new AshTouchExplorationManager(this));
 730   }
 731 #endif
 732 }
 733
 734 void RootWindowController::InitLayoutManagers() {
 735   aura::Window* root_window = GetRootWindow();
 736   root_window_layout_ = new RootWindowLayoutManager(root_window);
 737   root_window->SetLayoutManager(root_window_layout_);
 738
 739   aura::Window* default_container =
 740       GetContainer(kShellWindowId_DefaultContainer);
 741   // Workspace manager has its own layout managers.
 742   workspace_controller_.reset(
 743       new WorkspaceController(default_container));
 744
 745   aura::Window* always_on_top_container =
 746       GetContainer(kShellWindowId_AlwaysOnTopContainer);
 747   always_on_top_controller_.reset(
 748       new AlwaysOnTopController(always_on_top_container));
 749
 750   DCHECK(!shelf_.get());
 751   aura::Window* shelf_container = GetContainer(kShellWindowId_ShelfContainer);
 752   // TODO(harrym): Remove when status area is view.
 753   aura::Window* status_container = GetContainer(kShellWindowId_StatusContainer);
 754   shelf_.reset(new ShelfWidget(
 755       shelf_container, status_container, workspace_controller()));
 756
 757   if (!Shell::GetInstance()->session_state_delegate()->
 758       IsActiveUserSessionStarted()) {
 759     // This window exists only to be a event target on login screen.
 760     // It does not have to handle events, nor be visible.
 761     mouse_event_target_.reset(new aura::Window(new EmptyWindowDelegate));
 762     mouse_event_target_->Init(ui::LAYER_NOT_DRAWN);
 763
 764     aura::Window* lock_background_container =
 765         GetContainer(kShellWindowId_LockScreenBackgroundContainer);
 766     lock_background_container->AddChild(mouse_event_target_.get());
 767     mouse_event_target_->Show();
 768   }
 769
 770   // Create Docked windows layout manager
 771   aura::Window* docked_container = GetContainer(kShellWindowId_DockedContainer);
 772   docked_layout_manager_ =
 773       new DockedWindowLayoutManager(docked_container, workspace_controller());
 774   docked_container->SetLayoutManager(docked_layout_manager_);
 775
 776   // Installs SnapLayoutManager to containers who set the
 777   // |kSnapsChildrenToPhysicalPixelBoundary| property.
 778   wm::InstallSnapLayoutManagerToContainers(root_window);
 779
 780   // Create Panel layout manager
 781   aura::Window* panel_container = GetContainer(kShellWindowId_PanelContainer);
 782   panel_layout_manager_ = new PanelLayoutManager(panel_container);
 783   panel_container->SetLayoutManager(panel_layout_manager_);
 784   panel_container_handler_.reset(new PanelWindowEventHandler);
 785   panel_container->AddPreTargetHandler(panel_container_handler_.get());
 786
 787   // Install an AttachedPanelWindowTargeter on the panel container to make it
 788   // easier to correctly target shelf buttons with touch.
 789   gfx::Insets mouse_extend(-kResizeOutsideBoundsSize,
 790                            -kResizeOutsideBoundsSize,
 791                            -kResizeOutsideBoundsSize,
 792                            -kResizeOutsideBoundsSize);
 793   gfx::Insets touch_extend = mouse_extend.Scale(
 794       kResizeOutsideBoundsScaleForTouch);
 795   panel_container->SetEventTargeter(scoped_ptr<ui::EventTargeter>(
 796       new AttachedPanelWindowTargeter(panel_container,
 797                                       mouse_extend,
 798                                       touch_extend,
 799                                       panel_layout_manager_)));
 800 }
 801
 802 void RootWindowController::InitTouchHuds() {
 803   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
 804   if (command_line->HasSwitch(switches::kAshTouchHud))
 805     set_touch_hud_debug(new TouchHudDebug(GetRootWindow()));
 806   if (Shell::GetInstance()->is_touch_hud_projection_enabled())
 807     EnableTouchHudProjection();
 808 }
 809
 810 void RootWindowController::CreateSystemBackground(
 811     bool is_first_run_after_boot) {
 812   SkColor color = SK_ColorBLACK;
 813 #if defined(OS_CHROMEOS)
 814   if (is_first_run_after_boot)
 815     color = kChromeOsBootColor;
 816 #endif
 817   system_background_.reset(
 818       new SystemBackgroundController(GetRootWindow(), color));
 819
 820 #if defined(OS_CHROMEOS)
 821   // Make a copy of the system's boot splash screen so we can composite it
 822   // onscreen until the desktop background is ready.
 823   if (is_first_run_after_boot &&
 824       (base::CommandLine::ForCurrentProcess()->HasSwitch(
 825            switches::kAshCopyHostBackgroundAtBoot) ||
 826        base::CommandLine::ForCurrentProcess()->HasSwitch(
 827            switches::kAshAnimateFromBootSplashScreen)))
 828     boot_splash_screen_.reset(new BootSplashScreen(GetHost()));
 829 #endif
 830 }
 831
 832 void RootWindowController::CreateContainersInRootWindow(
 833     aura::Window* root_window) {
 834   // These containers are just used by PowerButtonController to animate groups
 835   // of containers simultaneously without messing up the current transformations
 836   // on those containers. These are direct children of the root window; all of
 837   // the other containers are their children.
 838
 839   // The desktop background container is not part of the lock animation, so it
 840   // is not included in those animate groups.
 841   // When screen is locked desktop background is moved to lock screen background
 842   // container (moved back on unlock). We want to make sure that there's an
 843   // opaque layer occluding the non-lock-screen layers.
 844   aura::Window* desktop_background_container = CreateContainer(
 845       kShellWindowId_DesktopBackgroundContainer,
 846       "DesktopBackgroundContainer",
 847       root_window);
 848   ::wm::SetChildWindowVisibilityChangesAnimated(desktop_background_container);
 849
 850   aura::Window* non_lock_screen_containers = CreateContainer(
 851       kShellWindowId_NonLockScreenContainersContainer,
 852       "NonLockScreenContainersContainer",
 853       root_window);
 854
 855   aura::Window* lock_background_containers = CreateContainer(
 856       kShellWindowId_LockScreenBackgroundContainer,
 857       "LockScreenBackgroundContainer",
 858       root_window);
 859   ::wm::SetChildWindowVisibilityChangesAnimated(lock_background_containers);
 860
 861   aura::Window* lock_screen_containers = CreateContainer(
 862       kShellWindowId_LockScreenContainersContainer,
 863       "LockScreenContainersContainer",
 864       root_window);
 865   aura::Window* lock_screen_related_containers = CreateContainer(
 866       kShellWindowId_LockScreenRelatedContainersContainer,
 867       "LockScreenRelatedContainersContainer",
 868       root_window);
 869
 870   CreateContainer(kShellWindowId_UnparentedControlContainer,
 871                   "UnparentedControlContainer",
 872                   non_lock_screen_containers);
 873
 874   aura::Window* default_container = CreateContainer(
 875       kShellWindowId_DefaultContainer,
 876       "DefaultContainer",
 877       non_lock_screen_containers);
 878   ::wm::SetChildWindowVisibilityChangesAnimated(default_container);
 879   wm::SetSnapsChildrenToPhysicalPixelBoundary(default_container);
 880   SetUsesScreenCoordinates(default_container);
 881   SetUsesEasyResizeTargeter(default_container);
 882
 883   aura::Window* always_on_top_container = CreateContainer(
 884       kShellWindowId_AlwaysOnTopContainer,
 885       "AlwaysOnTopContainer",
 886       non_lock_screen_containers);
 887   ::wm::SetChildWindowVisibilityChangesAnimated(always_on_top_container);
 888   wm::SetSnapsChildrenToPhysicalPixelBoundary(always_on_top_container);
 889   SetUsesScreenCoordinates(always_on_top_container);
 890
 891   aura::Window* docked_container = CreateContainer(
 892       kShellWindowId_DockedContainer,
 893       "DockedContainer",
 894       non_lock_screen_containers);
 895   ::wm::SetChildWindowVisibilityChangesAnimated(docked_container);
 896   wm::SetSnapsChildrenToPhysicalPixelBoundary(docked_container);
 897   SetUsesScreenCoordinates(docked_container);
 898   SetUsesEasyResizeTargeter(docked_container);
 899
 900   aura::Window* shelf_container =
 901       CreateContainer(kShellWindowId_ShelfContainer,
 902                       "ShelfContainer",
 903                       non_lock_screen_containers);
 904   wm::SetSnapsChildrenToPhysicalPixelBoundary(shelf_container);
 905   SetUsesScreenCoordinates(shelf_container);
 906   DescendantShouldStayInSameRootWindow(shelf_container);
 907
 908   aura::Window* panel_container = CreateContainer(
 909       kShellWindowId_PanelContainer,
 910       "PanelContainer",
 911       non_lock_screen_containers);
 912   wm::SetSnapsChildrenToPhysicalPixelBoundary(panel_container);
 913   SetUsesScreenCoordinates(panel_container);
 914
 915   aura::Window* shelf_bubble_container =
 916       CreateContainer(kShellWindowId_ShelfBubbleContainer,
 917                       "ShelfBubbleContainer",
 918                       non_lock_screen_containers);
 919   wm::SetSnapsChildrenToPhysicalPixelBoundary(shelf_bubble_container);
 920   SetUsesScreenCoordinates(shelf_bubble_container);
 921   DescendantShouldStayInSameRootWindow(shelf_bubble_container);
 922
 923   aura::Window* app_list_container =
 924       CreateContainer(kShellWindowId_AppListContainer,
 925                       "AppListContainer",
 926                       non_lock_screen_containers);
 927   wm::SetSnapsChildrenToPhysicalPixelBoundary(app_list_container);
 928   SetUsesScreenCoordinates(app_list_container);
 929
 930   aura::Window* modal_container = CreateContainer(
 931       kShellWindowId_SystemModalContainer,
 932       "SystemModalContainer",
 933       non_lock_screen_containers);
 934   wm::SetSnapsChildrenToPhysicalPixelBoundary(modal_container);
 935   modal_container->SetLayoutManager(
 936       new SystemModalContainerLayoutManager(modal_container));
 937   ::wm::SetChildWindowVisibilityChangesAnimated(modal_container);
 938   SetUsesScreenCoordinates(modal_container);
 939   SetUsesEasyResizeTargeter(modal_container);
 940
 941   // TODO(beng): Figure out if we can make this use
 942   // SystemModalContainerEventFilter instead of stops_event_propagation.
 943   aura::Window* lock_container = CreateContainer(
 944       kShellWindowId_LockScreenContainer,
 945       "LockScreenContainer",
 946       lock_screen_containers);
 947   wm::SetSnapsChildrenToPhysicalPixelBoundary(lock_container);
 948   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
 949           switches::kAshDisableLockLayoutManager)) {
 950     lock_container->SetLayoutManager(
 951             new WorkspaceLayoutManager(lock_container));
 952   } else {
 953     lock_container->SetLayoutManager(new LockLayoutManager(lock_container));
 954   }
 955   SetUsesScreenCoordinates(lock_container);
 956   // TODO(beng): stopsevents
 957
 958   aura::Window* lock_modal_container = CreateContainer(
 959       kShellWindowId_LockSystemModalContainer,
 960       "LockSystemModalContainer",
 961       lock_screen_containers);
 962   wm::SetSnapsChildrenToPhysicalPixelBoundary(lock_modal_container);
 963   lock_modal_container->SetLayoutManager(
 964       new SystemModalContainerLayoutManager(lock_modal_container));
 965   ::wm::SetChildWindowVisibilityChangesAnimated(lock_modal_container);
 966   SetUsesScreenCoordinates(lock_modal_container);
 967   SetUsesEasyResizeTargeter(lock_modal_container);
 968
 969   aura::Window* status_container =
 970       CreateContainer(kShellWindowId_StatusContainer,
 971                       "StatusContainer",
 972                       lock_screen_related_containers);
 973   wm::SetSnapsChildrenToPhysicalPixelBoundary(status_container);
 974   SetUsesScreenCoordinates(status_container);
 975   DescendantShouldStayInSameRootWindow(status_container);
 976
 977   aura::Window* settings_bubble_container = CreateContainer(
 978       kShellWindowId_SettingBubbleContainer,
 979       "SettingBubbleContainer",
 980       lock_screen_related_containers);
 981   ::wm::SetChildWindowVisibilityChangesAnimated(settings_bubble_container);
 982   wm::SetSnapsChildrenToPhysicalPixelBoundary(settings_bubble_container);
 983   SetUsesScreenCoordinates(settings_bubble_container);
 984   DescendantShouldStayInSameRootWindow(settings_bubble_container);
 985
 986   aura::Window* virtual_keyboard_parent_container =
 987       CreateContainer(kShellWindowId_ImeWindowParentContainer,
 988                       "VirtualKeyboardParentContainer",
 989                       lock_screen_related_containers);
 990   wm::SetSnapsChildrenToPhysicalPixelBoundary(
 991       virtual_keyboard_parent_container);
 992   SetUsesScreenCoordinates(virtual_keyboard_parent_container);
 993
 994   aura::Window* menu_container = CreateContainer(
 995       kShellWindowId_MenuContainer,
 996       "MenuContainer",
 997       lock_screen_related_containers);
 998   ::wm::SetChildWindowVisibilityChangesAnimated(menu_container);
 999   wm::SetSnapsChildrenToPhysicalPixelBoundary(menu_container);
1000   SetUsesScreenCoordinates(menu_container);
1001
1002   aura::Window* drag_drop_container = CreateContainer(
1003       kShellWindowId_DragImageAndTooltipContainer,
1004       "DragImageAndTooltipContainer",
1005       lock_screen_related_containers);
1006   ::wm::SetChildWindowVisibilityChangesAnimated(drag_drop_container);
1007   wm::SetSnapsChildrenToPhysicalPixelBoundary(drag_drop_container);
1008   SetUsesScreenCoordinates(drag_drop_container);
1009
1010   aura::Window* overlay_container = CreateContainer(
1011       kShellWindowId_OverlayContainer,
1012       "OverlayContainer",
1013       lock_screen_related_containers);
1014   wm::SetSnapsChildrenToPhysicalPixelBoundary(overlay_container);
1015   SetUsesScreenCoordinates(overlay_container);
1016
1017 #if defined(OS_CHROMEOS)
1018   aura::Window* mouse_cursor_container = CreateContainer(
1019       kShellWindowId_MouseCursorContainer,
1020       "MouseCursorContainer",
1021       root_window);
1022   SetUsesScreenCoordinates(mouse_cursor_container);
1023 #endif
1024
1025   CreateContainer(kShellWindowId_PowerButtonAnimationContainer,
1026                   "PowerButtonAnimationContainer", root_window);
1027 }
1028
1029 void RootWindowController::EnableTouchHudProjection() {
1030   if (touch_hud_projection_)
1031     return;
1032   set_touch_hud_projection(new TouchHudProjection(GetRootWindow()));
1033 }
1034
1035 void RootWindowController::DisableTouchHudProjection() {
1036   if (!touch_hud_projection_)
1037     return;
1038   touch_hud_projection_->Remove();
1039 }
1040
1041 void RootWindowController::OnLoginStateChanged(user::LoginStatus status) {
1042   shelf_->shelf_layout_manager()->UpdateVisibilityState();
1043 }
1044
1045 void RootWindowController::OnTouchHudProjectionToggled(bool enabled) {
1046   if (enabled)
1047     EnableTouchHudProjection();
1048   else
1049     DisableTouchHudProjection();
1050 }
1051
1052 RootWindowController* GetRootWindowController(
1053     const aura::Window* root_window) {
1054   return root_window ? GetRootWindowSettings(root_window)->controller : NULL;
1055 }
1056
1057 }  // namespace ash