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   };
 167   const int kExtraContainerIdsToMoveInUnifiedMode[] = {
 168       kShellWindowId_LockScreenContainer,
 169       kShellWindowId_LockScreenBackgroundContainer,
 170   };
 171   std::vector<int> container_ids(
 172       kContainerIdsToMove,
 173       kContainerIdsToMove + arraysize(kContainerIdsToMove));
 174   // Check the default_multi_display_mode because this is also necessary
 175   // in trasition between mirror <-> unified mode.
 176   if (Shell::GetInstance()->display_manager()->default_multi_display_mode() ==
 177       DisplayManager::UNIFIED) {
 178     for (int id : kExtraContainerIdsToMoveInUnifiedMode)
 179       container_ids.push_back(id);
 180   }
 181
 182   for (int id : container_ids) {
 183     aura::Window* src_container = Shell::GetContainer(src, id);
 184     aura::Window* dst_container = Shell::GetContainer(dst, id);
 185     while (!src_container->children().empty()) {
 186       // Restart iteration from the source container windows each time as they
 187       // may change as a result of moving other windows.
 188       aura::Window::Windows::const_iterator iter =
 189           src_container->children().begin();
 190       while (iter != src_container->children().end() &&
 191              SystemModalContainerLayoutManager::IsModalBackground(*iter)) {
 192         ++iter;
 193       }
 194       // If the entire window list is modal background windows then stop.
 195       if (iter == src_container->children().end())
 196         break;
 197       ReparentWindow(*iter, dst_container);
 198     }
 199   }
 200 }
 201
 202 // Mark the container window so that a widget added to this container will
 203 // use the virtual screeen coordinates instead of parent.
 204 void SetUsesScreenCoordinates(aura::Window* container) {
 205   container->SetProperty(kUsesScreenCoordinatesKey, true);
 206 }
 207
 208 // Mark the container window so that a widget added to this container will
 209 // say in the same root window regardless of the bounds specified.
 210 void DescendantShouldStayInSameRootWindow(aura::Window* container) {
 211   container->SetProperty(kStayInSameRootWindowKey, true);
 212 }
 213
 214 void SetUsesEasyResizeTargeter(aura::Window* container) {
 215   gfx::Insets mouse_extend(-kResizeOutsideBoundsSize,
 216                            -kResizeOutsideBoundsSize,
 217                            -kResizeOutsideBoundsSize,
 218                            -kResizeOutsideBoundsSize);
 219   gfx::Insets touch_extend = mouse_extend.Scale(
 220       kResizeOutsideBoundsScaleForTouch);
 221   container->SetEventTargeter(scoped_ptr<ui::EventTargeter>(
 222       new ::wm::EasyResizeWindowTargeter(container, mouse_extend,
 223                                          touch_extend)));
 224 }
 225
 226 // A window delegate which does nothing. Used to create a window that
 227 // is a event target, but do nothing.
 228 class EmptyWindowDelegate : public aura::WindowDelegate {
 229  public:
 230   EmptyWindowDelegate() {}
 231   ~EmptyWindowDelegate() override {}
 232
 233   // aura::WindowDelegate overrides:
 234   gfx::Size GetMinimumSize() const override { return gfx::Size(); }
 235   gfx::Size GetMaximumSize() const override { return gfx::Size(); }
 236   void OnBoundsChanged(const gfx::Rect& old_bounds,
 237                        const gfx::Rect& new_bounds) override {}
 238   ui::TextInputClient* GetFocusedTextInputClient() override { return nullptr; }
 239   gfx::NativeCursor GetCursor(const gfx::Point& point) override {
 240     return gfx::kNullCursor;
 241   }
 242   int GetNonClientComponent(const gfx::Point& point) const override {
 243     return HTNOWHERE;
 244   }
 245   bool ShouldDescendIntoChildForEventHandling(
 246       aura::Window* child,
 247       const gfx::Point& location) override {
 248     return false;
 249   }
 250   bool CanFocus() override { return false; }
 251   void OnCaptureLost() override {}
 252   void OnPaint(const ui::PaintContext& context) override {}
 253   void OnDeviceScaleFactorChanged(float device_scale_factor) override {}
 254   void OnWindowDestroying(aura::Window* window) override {}
 255   void OnWindowDestroyed(aura::Window* window) override { delete this; }
 256   void OnWindowTargetVisibilityChanged(bool visible) override {}
 257   bool HasHitTestMask() const override { return false; }
 258   void GetHitTestMask(gfx::Path* mask) const override {}
 259
 260  private:
 261   DISALLOW_COPY_AND_ASSIGN(EmptyWindowDelegate);
 262 };
 263
 264 }  // namespace
 265
 266 void RootWindowController::CreateForPrimaryDisplay(AshWindowTreeHost* host) {
 267   RootWindowController* controller = new RootWindowController(host);
 268   controller->Init(RootWindowController::PRIMARY,
 269                    Shell::GetInstance()->delegate()->IsFirstRunAfterBoot());
 270 }
 271
 272 void RootWindowController::CreateForSecondaryDisplay(AshWindowTreeHost* host) {
 273   RootWindowController* controller = new RootWindowController(host);
 274   controller->Init(RootWindowController::SECONDARY, false /* first run */);
 275 }
 276
 277 // static
 278 RootWindowController* RootWindowController::ForShelf(
 279     const aura::Window* window) {
 280   CHECK(Shell::HasInstance());
 281   return GetRootWindowController(window->GetRootWindow());
 282 }
 283
 284 // static
 285 RootWindowController* RootWindowController::ForWindow(
 286     const aura::Window* window) {
 287   CHECK(Shell::HasInstance());
 288   return GetRootWindowController(window->GetRootWindow());
 289 }
 290
 291 // static
 292 RootWindowController* RootWindowController::ForTargetRootWindow() {
 293   CHECK(Shell::HasInstance());
 294   return GetRootWindowController(Shell::GetTargetRootWindow());
 295 }
 296
 297 // static
 298 aura::Window* RootWindowController::GetContainerForWindow(
 299     aura::Window* window) {
 300   aura::Window* container = window->parent();
 301   while (container && container->type() != ui::wm::WINDOW_TYPE_UNKNOWN)
 302     container = container->parent();
 303   return container;
 304 }
 305
 306 RootWindowController::~RootWindowController() {
 307   Shutdown();
 308   ash_host_.reset();
 309   // The CaptureClient needs to be around for as long as the RootWindow is
 310   // valid.
 311   capture_client_.reset();
 312 }
 313
 314 aura::WindowTreeHost* RootWindowController::GetHost() {
 315   return ash_host_->AsWindowTreeHost();
 316 }
 317
 318 const aura::WindowTreeHost* RootWindowController::GetHost() const {
 319   return ash_host_->AsWindowTreeHost();
 320 }
 321
 322 aura::Window* RootWindowController::GetRootWindow() {
 323   return GetHost()->window();
 324 }
 325
 326 const aura::Window* RootWindowController::GetRootWindow() const {
 327   return GetHost()->window();
 328 }
 329
 330 void RootWindowController::SetWallpaperController(
 331     DesktopBackgroundWidgetController* controller) {
 332   wallpaper_controller_.reset(controller);
 333 }
 334
 335 void RootWindowController::SetAnimatingWallpaperController(
 336     AnimatingDesktopController* controller) {
 337   if (animating_wallpaper_controller_.get())
 338     animating_wallpaper_controller_->StopAnimating();
 339   animating_wallpaper_controller_.reset(controller);
 340 }
 341
 342 void RootWindowController::Shutdown() {
 343   Shell* shell = Shell::GetInstance();
 344   shell->RemoveShellObserver(this);
 345
 346 #if defined(OS_CHROMEOS)
 347   if (touch_exploration_manager_) {
 348     touch_exploration_manager_.reset();
 349   }
 350 #endif
 351
 352   if (animating_wallpaper_controller_.get())
 353     animating_wallpaper_controller_->StopAnimating();
 354   wallpaper_controller_.reset();
 355   animating_wallpaper_controller_.reset();
 356   aura::Window* root_window = GetRootWindow();
 357   // Change the target root window before closing child windows. If any child
 358   // being removed triggers a relayout of the shelf it will try to build a
 359   // window list adding windows from the target root window's containers which
 360   // may have already gone away.
 361   if (Shell::GetTargetRootWindow() == root_window) {
 362     shell->set_target_root_window(
 363         Shell::GetPrimaryRootWindow() == root_window
 364             ? NULL
 365             : Shell::GetPrimaryRootWindow());
 366   }
 367
 368   CloseChildWindows();
 369   GetRootWindowSettings(root_window)->controller = NULL;
 370   screen_dimmer_.reset();
 371   workspace_controller_.reset();
 372   // Forget with the display ID so that display lookup
 373   // ends up with invalid display.
 374   GetRootWindowSettings(root_window)->display_id =
 375       gfx::Display::kInvalidDisplayID;
 376   ash_host_->PrepareForShutdown();
 377
 378   system_background_.reset();
 379   aura::client::SetScreenPositionClient(root_window, NULL);
 380 }
 381
 382 SystemModalContainerLayoutManager*
 383 RootWindowController::GetSystemModalLayoutManager(aura::Window* window) {
 384   aura::Window* modal_container = NULL;
 385   if (window) {
 386     aura::Window* window_container = GetContainerForWindow(window);
 387     if (window_container &&
 388         window_container->id() >= kShellWindowId_LockScreenContainer) {
 389       modal_container = GetContainer(kShellWindowId_LockSystemModalContainer);
 390     } else {
 391       modal_container = GetContainer(kShellWindowId_SystemModalContainer);
 392     }
 393   } else {
 394     int modal_window_id = Shell::GetInstance()->session_state_delegate()
 395         ->IsUserSessionBlocked() ? kShellWindowId_LockSystemModalContainer :
 396                                    kShellWindowId_SystemModalContainer;
 397     modal_container = GetContainer(modal_window_id);
 398   }
 399   return modal_container ? static_cast<SystemModalContainerLayoutManager*>(
 400       modal_container->layout_manager()) : NULL;
 401 }
 402
 403 aura::Window* RootWindowController::GetContainer(int container_id) {
 404   return GetRootWindow()->GetChildById(container_id);
 405 }
 406
 407 const aura::Window* RootWindowController::GetContainer(int container_id) const {
 408   return ash_host_->AsWindowTreeHost()->window()->GetChildById(container_id);
 409 }
 410
 411 void RootWindowController::ShowShelf() {
 412   if (!shelf_->shelf())
 413     return;
 414   shelf_->shelf()->SetVisible(true);
 415   shelf_->status_area_widget()->Show();
 416 }
 417
 418 void RootWindowController::OnShelfCreated() {
 419   if (panel_layout_manager_)
 420     panel_layout_manager_->SetShelf(shelf_->shelf());
 421   if (docked_layout_manager_) {
 422     docked_layout_manager_->SetShelf(shelf_->shelf());
 423     if (shelf_->shelf_layout_manager())
 424       docked_layout_manager_->AddObserver(shelf_->shelf_layout_manager());
 425   }
 426
 427   // Notify shell observers that the shelf has been created.
 428   Shell::GetInstance()->OnShelfCreatedForRootWindow(GetRootWindow());
 429 }
 430
 431 void RootWindowController::UpdateAfterLoginStatusChange(
 432     user::LoginStatus status) {
 433   if (status != user::LOGGED_IN_NONE)
 434     mouse_event_target_.reset();
 435   if (shelf_->status_area_widget())
 436     shelf_->status_area_widget()->UpdateAfterLoginStatusChange(status);
 437 }
 438
 439 void RootWindowController::HandleInitialDesktopBackgroundAnimationStarted() {
 440 #if defined(OS_CHROMEOS)
 441   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
 442           switches::kAshAnimateFromBootSplashScreen) &&
 443       boot_splash_screen_.get()) {
 444     // Make the splash screen fade out so it doesn't obscure the desktop
 445     // wallpaper's brightness/grayscale animation.
 446     boot_splash_screen_->StartHideAnimation(
 447         base::TimeDelta::FromMilliseconds(kBootSplashScreenHideDurationMs));
 448   }
 449 #endif
 450 }
 451
 452 void RootWindowController::OnWallpaperAnimationFinished(views::Widget* widget) {
 453   // Make sure the wallpaper is visible.
 454   system_background_->SetColor(SK_ColorBLACK);
 455 #if defined(OS_CHROMEOS)
 456   boot_splash_screen_.reset();
 457 #endif
 458
 459   Shell::GetInstance()->user_wallpaper_delegate()->
 460       OnWallpaperAnimationFinished();
 461   // Only removes old component when wallpaper animation finished. If we
 462   // remove the old one before the new wallpaper is done fading in there will
 463   // be a white flash during the animation.
 464   if (animating_wallpaper_controller()) {
 465     DesktopBackgroundWidgetController* controller =
 466         animating_wallpaper_controller()->GetController(true);
 467     // |desktop_widget_| should be the same animating widget we try to move
 468     // to |kDesktopController|. Otherwise, we may close |desktop_widget_|
 469     // before move it to |kDesktopController|.
 470     DCHECK_EQ(controller->widget(), widget);
 471     // Release the old controller and close its background widget.
 472     SetWallpaperController(controller);
 473   }
 474 }
 475
 476 void RootWindowController::CloseChildWindows() {
 477   mouse_event_target_.reset();
 478
 479   // Remove observer as deactivating keyboard causes |docked_layout_manager_|
 480   // to fire notifications.
 481   if (docked_layout_manager_ && shelf_ && shelf_->shelf_layout_manager())
 482     docked_layout_manager_->RemoveObserver(shelf_->shelf_layout_manager());
 483
 484   // Deactivate keyboard container before closing child windows and shutting
 485   // down associated layout managers.
 486   DeactivateKeyboard(keyboard::KeyboardController::GetInstance());
 487
 488   // panel_layout_manager_ needs to be shut down before windows are destroyed.
 489   if (panel_layout_manager_) {
 490     panel_layout_manager_->Shutdown();
 491     panel_layout_manager_ = NULL;
 492   }
 493   // docked_layout_manager_ needs to be shut down before windows are destroyed.
 494   if (docked_layout_manager_) {
 495     docked_layout_manager_->Shutdown();
 496     docked_layout_manager_ = NULL;
 497   }
 498   aura::Window* root_window = GetRootWindow();
 499   aura::client::SetDragDropClient(root_window, NULL);
 500
 501   // TODO(harrym): Remove when Status Area Widget is a child view.
 502   if (shelf_) {
 503     shelf_->ShutdownStatusAreaWidget();
 504
 505     if (shelf_->shelf_layout_manager())
 506       shelf_->shelf_layout_manager()->PrepareForShutdown();
 507   }
 508
 509   // Close background widget first as it depends on tooltip.
 510   wallpaper_controller_.reset();
 511   animating_wallpaper_controller_.reset();
 512
 513   workspace_controller_.reset();
 514   aura::client::SetTooltipClient(root_window, NULL);
 515
 516   // Explicitly destroy top level windows. We do this as during part of
 517   // destruction such windows may query the RootWindow for state.
 518   std::queue<aura::Window*> non_toplevel_windows;
 519   non_toplevel_windows.push(root_window);
 520   while (!non_toplevel_windows.empty()) {
 521     aura::Window* non_toplevel_window = non_toplevel_windows.front();
 522     non_toplevel_windows.pop();
 523     aura::WindowTracker toplevel_windows;
 524     for (size_t i = 0; i < non_toplevel_window->children().size(); ++i) {
 525       aura::Window* child = non_toplevel_window->children()[i];
 526       if (!child->owned_by_parent())
 527         continue;
 528       if (child->delegate())
 529         toplevel_windows.Add(child);
 530       else
 531         non_toplevel_windows.push(child);
 532     }
 533     while (!toplevel_windows.windows().empty())
 534       delete *toplevel_windows.windows().begin();
 535   }
 536   // And then remove the containers.
 537   while (!root_window->children().empty()) {
 538     aura::Window* window = root_window->children()[0];
 539     if (window->owned_by_parent()) {
 540       delete window;
 541     } else {
 542       root_window->RemoveChild(window);
 543     }
 544   }
 545
 546   shelf_.reset();
 547 }
 548
 549 void RootWindowController::MoveWindowsTo(aura::Window* dst) {
 550   // Forget the shelf early so that shelf don't update itself using wrong
 551   // display info.
 552   workspace_controller_->SetShelf(NULL);
 553   ReparentAllWindows(GetRootWindow(), dst);
 554 }
 555
 556 ShelfLayoutManager* RootWindowController::GetShelfLayoutManager() {
 557   return shelf_->shelf_layout_manager();
 558 }
 559
 560 SystemTray* RootWindowController::GetSystemTray() {
 561   // We assume in throughout the code that this will not return NULL. If code
 562   // triggers this for valid reasons, it should test status_area_widget first.
 563   CHECK(shelf_->status_area_widget());
 564   return shelf_->status_area_widget()->system_tray();
 565 }
 566
 567 void RootWindowController::ShowContextMenu(const gfx::Point& location_in_screen,
 568                                            ui::MenuSourceType source_type) {
 569   DCHECK(Shell::GetInstance()->delegate());
 570   scoped_ptr<ui::MenuModel> menu_model(
 571       Shell::GetInstance()->delegate()->CreateContextMenu(
 572           GetRootWindow(), NULL, NULL));
 573   if (!menu_model)
 574     return;
 575
 576   // Background controller may not be set yet if user clicked on status are
 577   // before initial animation completion. See crbug.com/222218
 578   if (!wallpaper_controller_.get())
 579     return;
 580
 581   views::MenuRunner menu_runner(menu_model.get(),
 582                                 views::MenuRunner::CONTEXT_MENU);
 583   if (menu_runner.RunMenuAt(wallpaper_controller_->widget(),
 584                             NULL,
 585                             gfx::Rect(location_in_screen, gfx::Size()),
 586                             views::MENU_ANCHOR_TOPLEFT,
 587                             source_type) == views::MenuRunner::MENU_DELETED) {
 588     return;
 589   }
 590
 591   Shell::GetInstance()->UpdateShelfVisibility();
 592 }
 593
 594 void RootWindowController::UpdateShelfVisibility() {
 595   shelf_->shelf_layout_manager()->UpdateVisibilityState();
 596 }
 597
 598 const aura::Window* RootWindowController::GetWindowForFullscreenMode() const {
 599   const aura::Window* topmost_window = NULL;
 600   const aura::Window* active_window = wm::GetActiveWindow();
 601   if (active_window && active_window->GetRootWindow() == GetRootWindow() &&
 602       IsSwitchableContainer(active_window->parent())) {
 603     // Use the active window when it is on the current root window to determine
 604     // the fullscreen state to allow temporarily using a panel or docked window
 605     // (which are always above the default container) while a fullscreen
 606     // window is open. We only use the active window when in a switchable
 607     // container as the launcher should not exit fullscreen mode.
 608     topmost_window = active_window;
 609   } else {
 610     // Otherwise, use the topmost window on the root window's default container
 611     // when there is no active window on this root window.
 612     const aura::Window::Windows& windows =
 613         GetContainer(kShellWindowId_DefaultContainer)->children();
 614     for (aura::Window::Windows::const_reverse_iterator iter = windows.rbegin();
 615          iter != windows.rend(); ++iter) {
 616       if (((*iter)->type() == ui::wm::WINDOW_TYPE_NORMAL ||
 617            (*iter)->type() == ui::wm::WINDOW_TYPE_PANEL) &&
 618           (*iter)->layer()->GetTargetVisibility()) {
 619         topmost_window = *iter;
 620         break;
 621       }
 622     }
 623   }
 624   while (topmost_window) {
 625     if (wm::GetWindowState(topmost_window)->IsFullscreen())
 626       return topmost_window;
 627     topmost_window = ::wm::GetTransientParent(topmost_window);
 628   }
 629   return NULL;
 630 }
 631
 632 void RootWindowController::ActivateKeyboard(
 633     keyboard::KeyboardController* keyboard_controller) {
 634   if (!keyboard::IsKeyboardEnabled() ||
 635       GetContainer(kShellWindowId_VirtualKeyboardContainer)) {
 636     return;
 637   }
 638   DCHECK(keyboard_controller);
 639   keyboard_controller->AddObserver(shelf()->shelf_layout_manager());
 640   keyboard_controller->AddObserver(panel_layout_manager_);
 641   keyboard_controller->AddObserver(docked_layout_manager_);
 642   keyboard_controller->AddObserver(workspace_controller_->layout_manager());
 643   keyboard_controller->AddObserver(
 644       always_on_top_controller_->GetLayoutManager());
 645   Shell::GetInstance()->delegate()->VirtualKeyboardActivated(true);
 646   aura::Window* parent = GetContainer(kShellWindowId_ImeWindowParentContainer);
 647   DCHECK(parent);
 648   aura::Window* keyboard_container =
 649       keyboard_controller->GetContainerWindow();
 650   keyboard_container->set_id(kShellWindowId_VirtualKeyboardContainer);
 651   parent->AddChild(keyboard_container);
 652 }
 653
 654 void RootWindowController::DeactivateKeyboard(
 655     keyboard::KeyboardController* keyboard_controller) {
 656   if (!keyboard_controller ||
 657       !keyboard_controller->keyboard_container_initialized()) {
 658     return;
 659   }
 660   aura::Window* keyboard_container =
 661       keyboard_controller->GetContainerWindow();
 662   if (keyboard_container->GetRootWindow() == GetRootWindow()) {
 663     aura::Window* parent =
 664         GetContainer(kShellWindowId_ImeWindowParentContainer);
 665     DCHECK(parent);
 666     parent->RemoveChild(keyboard_container);
 667     // Virtual keyboard may be deactivated while still showing, notify all
 668     // observers that keyboard bounds changed to 0 before remove them.
 669     keyboard_controller->NotifyKeyboardBoundsChanging(gfx::Rect());
 670     keyboard_controller->RemoveObserver(shelf()->shelf_layout_manager());
 671     keyboard_controller->RemoveObserver(panel_layout_manager_);
 672     keyboard_controller->RemoveObserver(docked_layout_manager_);
 673     keyboard_controller->RemoveObserver(
 674         workspace_controller_->layout_manager());
 675     keyboard_controller->RemoveObserver(
 676         always_on_top_controller_->GetLayoutManager());
 677     Shell::GetInstance()->delegate()->VirtualKeyboardActivated(false);
 678   }
 679 }
 680
 681 bool RootWindowController::IsVirtualKeyboardWindow(aura::Window* window) {
 682   aura::Window* parent = GetContainer(kShellWindowId_ImeWindowParentContainer);
 683   return parent ? parent->Contains(window) : false;
 684 }
 685
 686 ////////////////////////////////////////////////////////////////////////////////
 687 // RootWindowController, private:
 688
 689 RootWindowController::RootWindowController(AshWindowTreeHost* ash_host)
 690     : ash_host_(ash_host),
 691       root_window_layout_(NULL),
 692       docked_layout_manager_(NULL),
 693       panel_layout_manager_(NULL),
 694       touch_hud_debug_(NULL),
 695       touch_hud_projection_(NULL) {
 696   aura::Window* root_window = GetRootWindow();
 697   GetRootWindowSettings(root_window)->controller = this;
 698   screen_dimmer_.reset(new ScreenDimmer(root_window));
 699
 700   stacking_controller_.reset(new StackingController);
 701   aura::client::SetWindowTreeClient(root_window, stacking_controller_.get());
 702   capture_client_.reset(new ::wm::ScopedCaptureClient(root_window));
 703 }
 704
 705 void RootWindowController::Init(RootWindowType root_window_type,
 706                                 bool first_run_after_boot) {
 707   aura::Window* root_window = GetRootWindow();
 708   Shell* shell = Shell::GetInstance();
 709   shell->InitRootWindow(root_window);
 710
 711   ash_host_->AsWindowTreeHost()->SetCursor(ui::kCursorPointer);
 712   CreateContainersInRootWindow(root_window);
 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     shell->InitKeyboard();
 729   } else {
 730     root_window_layout()->OnWindowResized();
 731     ash_host_->AsWindowTreeHost()->Show();
 732
 733     // Create a shelf if a user is already logged in.
 734     if (shell->session_state_delegate()->NumberOfLoggedInUsers())
 735       shelf()->CreateShelf();
 736
 737     // Notify shell observers about new root window.
 738     shell->OnRootWindowAdded(root_window);
 739   }
 740
 741 #if defined(OS_CHROMEOS)
 742   if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
 743           switches::kAshDisableTouchExplorationMode)) {
 744     touch_exploration_manager_.reset(new AshTouchExplorationManager(this));
 745   }
 746 #endif
 747 }
 748
 749 void RootWindowController::InitLayoutManagers() {
 750   aura::Window* root_window = GetRootWindow();
 751   root_window_layout_ = new RootWindowLayoutManager(root_window);
 752   root_window->SetLayoutManager(root_window_layout_);
 753
 754   aura::Window* default_container =
 755       GetContainer(kShellWindowId_DefaultContainer);
 756   // Workspace manager has its own layout managers.
 757   workspace_controller_.reset(
 758       new WorkspaceController(default_container));
 759
 760   aura::Window* always_on_top_container =
 761       GetContainer(kShellWindowId_AlwaysOnTopContainer);
 762   always_on_top_controller_.reset(
 763       new AlwaysOnTopController(always_on_top_container));
 764
 765   DCHECK(!shelf_.get());
 766   aura::Window* shelf_container = GetContainer(kShellWindowId_ShelfContainer);
 767   // TODO(harrym): Remove when status area is view.
 768   aura::Window* status_container = GetContainer(kShellWindowId_StatusContainer);
 769   shelf_.reset(new ShelfWidget(
 770       shelf_container, status_container, workspace_controller()));
 771
 772   if (!Shell::GetInstance()->session_state_delegate()->
 773       IsActiveUserSessionStarted()) {
 774     // This window exists only to be a event target on login screen.
 775     // It does not have to handle events, nor be visible.
 776     mouse_event_target_.reset(new aura::Window(new EmptyWindowDelegate));
 777     mouse_event_target_->Init(ui::LAYER_NOT_DRAWN);
 778
 779     aura::Window* lock_background_container =
 780         GetContainer(kShellWindowId_LockScreenBackgroundContainer);
 781     lock_background_container->AddChild(mouse_event_target_.get());
 782     mouse_event_target_->Show();
 783   }
 784
 785   // Create Docked windows layout manager
 786   aura::Window* docked_container = GetContainer(kShellWindowId_DockedContainer);
 787   docked_layout_manager_ =
 788       new DockedWindowLayoutManager(docked_container, workspace_controller());
 789   docked_container->SetLayoutManager(docked_layout_manager_);
 790
 791   // Installs SnapLayoutManager to containers who set the
 792   // |kSnapsChildrenToPhysicalPixelBoundary| property.
 793   wm::InstallSnapLayoutManagerToContainers(root_window);
 794
 795   // Create Panel layout manager
 796   aura::Window* panel_container = GetContainer(kShellWindowId_PanelContainer);
 797   panel_layout_manager_ = new PanelLayoutManager(panel_container);
 798   panel_container->SetLayoutManager(panel_layout_manager_);
 799   panel_container_handler_.reset(new PanelWindowEventHandler);
 800   panel_container->AddPreTargetHandler(panel_container_handler_.get());
 801
 802   // Install an AttachedPanelWindowTargeter on the panel container to make it
 803   // easier to correctly target shelf buttons with touch.
 804   gfx::Insets mouse_extend(-kResizeOutsideBoundsSize,
 805                            -kResizeOutsideBoundsSize,
 806                            -kResizeOutsideBoundsSize,
 807                            -kResizeOutsideBoundsSize);
 808   gfx::Insets touch_extend = mouse_extend.Scale(
 809       kResizeOutsideBoundsScaleForTouch);
 810   panel_container->SetEventTargeter(scoped_ptr<ui::EventTargeter>(
 811       new AttachedPanelWindowTargeter(panel_container,
 812                                       mouse_extend,
 813                                       touch_extend,
 814                                       panel_layout_manager_)));
 815 }
 816
 817 void RootWindowController::InitTouchHuds() {
 818   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
 819   if (command_line->HasSwitch(switches::kAshTouchHud))
 820     set_touch_hud_debug(new TouchHudDebug(GetRootWindow()));
 821   if (Shell::GetInstance()->is_touch_hud_projection_enabled())
 822     EnableTouchHudProjection();
 823 }
 824
 825 void RootWindowController::CreateSystemBackground(
 826     bool is_first_run_after_boot) {
 827   SkColor color = SK_ColorBLACK;
 828 #if defined(OS_CHROMEOS)
 829   if (is_first_run_after_boot)
 830     color = kChromeOsBootColor;
 831 #endif
 832   system_background_.reset(
 833       new SystemBackgroundController(GetRootWindow(), color));
 834
 835 #if defined(OS_CHROMEOS)
 836   // Make a copy of the system's boot splash screen so we can composite it
 837   // onscreen until the desktop background is ready.
 838   if (is_first_run_after_boot &&
 839       (base::CommandLine::ForCurrentProcess()->HasSwitch(
 840            switches::kAshCopyHostBackgroundAtBoot) ||
 841        base::CommandLine::ForCurrentProcess()->HasSwitch(
 842            switches::kAshAnimateFromBootSplashScreen)))
 843     boot_splash_screen_.reset(new BootSplashScreen(GetHost()));
 844 #endif
 845 }
 846
 847 void RootWindowController::CreateContainersInRootWindow(
 848     aura::Window* root_window) {
 849   // These containers are just used by PowerButtonController to animate groups
 850   // of containers simultaneously without messing up the current transformations
 851   // on those containers. These are direct children of the root window; all of
 852   // the other containers are their children.
 853
 854   // The desktop background container is not part of the lock animation, so it
 855   // is not included in those animate groups.
 856   // When screen is locked desktop background is moved to lock screen background
 857   // container (moved back on unlock). We want to make sure that there's an
 858   // opaque layer occluding the non-lock-screen layers.
 859   aura::Window* desktop_background_container = CreateContainer(
 860       kShellWindowId_DesktopBackgroundContainer,
 861       "DesktopBackgroundContainer",
 862       root_window);
 863   ::wm::SetChildWindowVisibilityChangesAnimated(desktop_background_container);
 864
 865   aura::Window* non_lock_screen_containers = CreateContainer(
 866       kShellWindowId_NonLockScreenContainersContainer,
 867       "NonLockScreenContainersContainer",
 868       root_window);
 869   // Clip all windows inside this container, as half pixel of the window's
 870   // texture may become visible when the screen is scaled. crbug.com/368591.
 871   non_lock_screen_containers->layer()->SetMasksToBounds(true);
 872
 873   aura::Window* lock_background_containers = CreateContainer(
 874       kShellWindowId_LockScreenBackgroundContainer,
 875       "LockScreenBackgroundContainer",
 876       root_window);
 877   ::wm::SetChildWindowVisibilityChangesAnimated(lock_background_containers);
 878
 879   aura::Window* lock_screen_containers = CreateContainer(
 880       kShellWindowId_LockScreenContainersContainer,
 881       "LockScreenContainersContainer",
 882       root_window);
 883   aura::Window* lock_screen_related_containers = CreateContainer(
 884       kShellWindowId_LockScreenRelatedContainersContainer,
 885       "LockScreenRelatedContainersContainer",
 886       root_window);
 887
 888   CreateContainer(kShellWindowId_UnparentedControlContainer,
 889                   "UnparentedControlContainer",
 890                   non_lock_screen_containers);
 891
 892   aura::Window* default_container = CreateContainer(
 893       kShellWindowId_DefaultContainer,
 894       "DefaultContainer",
 895       non_lock_screen_containers);
 896   ::wm::SetChildWindowVisibilityChangesAnimated(default_container);
 897   wm::SetSnapsChildrenToPhysicalPixelBoundary(default_container);
 898   SetUsesScreenCoordinates(default_container);
 899   SetUsesEasyResizeTargeter(default_container);
 900
 901   aura::Window* always_on_top_container = CreateContainer(
 902       kShellWindowId_AlwaysOnTopContainer,
 903       "AlwaysOnTopContainer",
 904       non_lock_screen_containers);
 905   ::wm::SetChildWindowVisibilityChangesAnimated(always_on_top_container);
 906   wm::SetSnapsChildrenToPhysicalPixelBoundary(always_on_top_container);
 907   SetUsesScreenCoordinates(always_on_top_container);
 908
 909   aura::Window* docked_container = CreateContainer(
 910       kShellWindowId_DockedContainer,
 911       "DockedContainer",
 912       non_lock_screen_containers);
 913   ::wm::SetChildWindowVisibilityChangesAnimated(docked_container);
 914   wm::SetSnapsChildrenToPhysicalPixelBoundary(docked_container);
 915   SetUsesScreenCoordinates(docked_container);
 916   SetUsesEasyResizeTargeter(docked_container);
 917
 918   aura::Window* shelf_container =
 919       CreateContainer(kShellWindowId_ShelfContainer,
 920                       "ShelfContainer",
 921                       non_lock_screen_containers);
 922   wm::SetSnapsChildrenToPhysicalPixelBoundary(shelf_container);
 923   SetUsesScreenCoordinates(shelf_container);
 924   DescendantShouldStayInSameRootWindow(shelf_container);
 925
 926   aura::Window* panel_container = CreateContainer(
 927       kShellWindowId_PanelContainer,
 928       "PanelContainer",
 929       non_lock_screen_containers);
 930   wm::SetSnapsChildrenToPhysicalPixelBoundary(panel_container);
 931   SetUsesScreenCoordinates(panel_container);
 932
 933   aura::Window* shelf_bubble_container =
 934       CreateContainer(kShellWindowId_ShelfBubbleContainer,
 935                       "ShelfBubbleContainer",
 936                       non_lock_screen_containers);
 937   wm::SetSnapsChildrenToPhysicalPixelBoundary(shelf_bubble_container);
 938   SetUsesScreenCoordinates(shelf_bubble_container);
 939   DescendantShouldStayInSameRootWindow(shelf_bubble_container);
 940
 941   aura::Window* app_list_container =
 942       CreateContainer(kShellWindowId_AppListContainer,
 943                       "AppListContainer",
 944                       non_lock_screen_containers);
 945   wm::SetSnapsChildrenToPhysicalPixelBoundary(app_list_container);
 946   SetUsesScreenCoordinates(app_list_container);
 947
 948   aura::Window* modal_container = CreateContainer(
 949       kShellWindowId_SystemModalContainer,
 950       "SystemModalContainer",
 951       non_lock_screen_containers);
 952   wm::SetSnapsChildrenToPhysicalPixelBoundary(modal_container);
 953   modal_container->SetLayoutManager(
 954       new SystemModalContainerLayoutManager(modal_container));
 955   ::wm::SetChildWindowVisibilityChangesAnimated(modal_container);
 956   SetUsesScreenCoordinates(modal_container);
 957   SetUsesEasyResizeTargeter(modal_container);
 958
 959   // TODO(beng): Figure out if we can make this use
 960   // SystemModalContainerEventFilter instead of stops_event_propagation.
 961   aura::Window* lock_container = CreateContainer(
 962       kShellWindowId_LockScreenContainer,
 963       "LockScreenContainer",
 964       lock_screen_containers);
 965   wm::SetSnapsChildrenToPhysicalPixelBoundary(lock_container);
 966   lock_container->SetLayoutManager(new LockLayoutManager(lock_container));
 967   SetUsesScreenCoordinates(lock_container);
 968   // TODO(beng): stopsevents
 969
 970   aura::Window* lock_modal_container = CreateContainer(
 971       kShellWindowId_LockSystemModalContainer,
 972       "LockSystemModalContainer",
 973       lock_screen_containers);
 974   wm::SetSnapsChildrenToPhysicalPixelBoundary(lock_modal_container);
 975   lock_modal_container->SetLayoutManager(
 976       new SystemModalContainerLayoutManager(lock_modal_container));
 977   ::wm::SetChildWindowVisibilityChangesAnimated(lock_modal_container);
 978   SetUsesScreenCoordinates(lock_modal_container);
 979   SetUsesEasyResizeTargeter(lock_modal_container);
 980
 981   aura::Window* status_container =
 982       CreateContainer(kShellWindowId_StatusContainer,
 983                       "StatusContainer",
 984                       lock_screen_related_containers);
 985   wm::SetSnapsChildrenToPhysicalPixelBoundary(status_container);
 986   SetUsesScreenCoordinates(status_container);
 987   DescendantShouldStayInSameRootWindow(status_container);
 988
 989   aura::Window* settings_bubble_container = CreateContainer(
 990       kShellWindowId_SettingBubbleContainer,
 991       "SettingBubbleContainer",
 992       lock_screen_related_containers);
 993   ::wm::SetChildWindowVisibilityChangesAnimated(settings_bubble_container);
 994   wm::SetSnapsChildrenToPhysicalPixelBoundary(settings_bubble_container);
 995   SetUsesScreenCoordinates(settings_bubble_container);
 996   DescendantShouldStayInSameRootWindow(settings_bubble_container);
 997
 998   aura::Window* virtual_keyboard_parent_container =
 999       CreateContainer(kShellWindowId_ImeWindowParentContainer,
1000                       "VirtualKeyboardParentContainer",
1001                       lock_screen_related_containers);
1002   wm::SetSnapsChildrenToPhysicalPixelBoundary(
1003       virtual_keyboard_parent_container);
1004   SetUsesScreenCoordinates(virtual_keyboard_parent_container);
1005
1006   aura::Window* menu_container = CreateContainer(
1007       kShellWindowId_MenuContainer,
1008       "MenuContainer",
1009       lock_screen_related_containers);
1010   ::wm::SetChildWindowVisibilityChangesAnimated(menu_container);
1011   wm::SetSnapsChildrenToPhysicalPixelBoundary(menu_container);
1012   SetUsesScreenCoordinates(menu_container);
1013
1014   aura::Window* drag_drop_container = CreateContainer(
1015       kShellWindowId_DragImageAndTooltipContainer,
1016       "DragImageAndTooltipContainer",
1017       lock_screen_related_containers);
1018   ::wm::SetChildWindowVisibilityChangesAnimated(drag_drop_container);
1019   wm::SetSnapsChildrenToPhysicalPixelBoundary(drag_drop_container);
1020   SetUsesScreenCoordinates(drag_drop_container);
1021
1022   aura::Window* overlay_container = CreateContainer(
1023       kShellWindowId_OverlayContainer,
1024       "OverlayContainer",
1025       lock_screen_related_containers);
1026   wm::SetSnapsChildrenToPhysicalPixelBoundary(overlay_container);
1027   SetUsesScreenCoordinates(overlay_container);
1028
1029 #if defined(OS_CHROMEOS)
1030   aura::Window* mouse_cursor_container = CreateContainer(
1031       kShellWindowId_MouseCursorContainer,
1032       "MouseCursorContainer",
1033       root_window);
1034   SetUsesScreenCoordinates(mouse_cursor_container);
1035 #endif
1036
1037   CreateContainer(kShellWindowId_PowerButtonAnimationContainer,
1038                   "PowerButtonAnimationContainer", root_window);
1039 }
1040
1041 void RootWindowController::EnableTouchHudProjection() {
1042   if (touch_hud_projection_)
1043     return;
1044   set_touch_hud_projection(new TouchHudProjection(GetRootWindow()));
1045 }
1046
1047 void RootWindowController::DisableTouchHudProjection() {
1048   if (!touch_hud_projection_)
1049     return;
1050   touch_hud_projection_->Remove();
1051 }
1052
1053 void RootWindowController::OnLoginStateChanged(user::LoginStatus status) {
1054   shelf_->shelf_layout_manager()->UpdateVisibilityState();
1055 }
1056
1057 void RootWindowController::OnTouchHudProjectionToggled(bool enabled) {
1058   if (enabled)
1059     EnableTouchHudProjection();
1060   else
1061     DisableTouchHudProjection();
1062 }
1063
1064 RootWindowController* GetRootWindowController(
1065     const aura::Window* root_window) {
1066   return root_window ? GetRootWindowSettings(root_window)->controller : NULL;
1067 }
1068
1069 }  // namespace ash