Add persisted preference for projection touch HUD

ash/root_window_controller.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/root_window_controller.h"
 
 #include <vector>
 
 #include "ash/ash_constants.h"
 #include "ash/ash_switches.h"
@@ skipping 185 matching lines @@
 RootWindowController* RootWindowController::ForWindow(
     const aura::Window* window) {
   return GetRootWindowController(window->GetRootWindow());
 }
 
 // static
 RootWindowController* RootWindowController::ForActiveRootWindow() {
   return GetRootWindowController(Shell::GetActiveRootWindow());
 }
 
-void RootWindowController::EnableTouchHudProjection() {
-  if (touch_hud_projection_)
-    return;
-  set_touch_hud_projection(new TouchHudProjection(root_window_.get()));
-}
-
-void RootWindowController::DisableTouchHudProjection() {
-  if (!touch_hud_projection_)
-    return;
-  touch_hud_projection_->Remove();
-}
-
 void RootWindowController::SetWallpaperController(
     DesktopBackgroundWidgetController* controller) {
   wallpaper_controller_.reset(controller);
 }
 
 void RootWindowController::SetAnimatingWallpaperController(
     AnimatingDesktopController* controller) {
   if (animating_wallpaper_controller_.get())
     animating_wallpaper_controller_->StopAnimating();
   animating_wallpaper_controller_.reset(controller);
 }
 
 void RootWindowController::Shutdown() {
+  Shell::GetInstance()->RemoveShellObserver(this);
+
   if (animating_wallpaper_controller_.get())
     animating_wallpaper_controller_->StopAnimating();
   wallpaper_controller_.reset();
   animating_wallpaper_controller_.reset();
 
   CloseChildWindows();
   if (Shell::GetActiveRootWindow() == root_window_) {
     Shell::GetInstance()->set_active_root_window(
         Shell::GetPrimaryRootWindow() == root_window_.get() ?
         NULL : Shell::GetPrimaryRootWindow());
@@ skipping 44 matching lines @@
   CreateSystemBackground(first_run_after_boot);
 
   InitLayoutManagers();
   InitKeyboard();
   InitTouchHuds();
 
   if (Shell::GetPrimaryRootWindowController()->
       GetSystemModalLayoutManager(NULL)->has_modal_background()) {
     GetSystemModalLayoutManager(NULL)->CreateModalBackground();
   }
+
+  Shell::GetInstance()->AddShellObserver(this);
 }
 
 void RootWindowController::ShowLauncher() {
   if (!shelf_->launcher())
     return;
   shelf_->launcher()->SetVisible(true);
   shelf_->status_area_widget()->Show();
 }
 
 void RootWindowController::OnLauncherCreated() {
   if (panel_layout_manager_)
     panel_layout_manager_->SetLauncher(shelf_->launcher());
   if (docked_layout_manager_)
     docked_layout_manager_->SetLauncher(shelf_->launcher());
 }
 
-void RootWindowController::OnLoginStateChanged(user::LoginStatus status) {
-  shelf_->shelf_layout_manager()->UpdateVisibilityState();
-}
-
 void RootWindowController::UpdateAfterLoginStatusChange(
     user::LoginStatus status) {
   if (shelf_->status_area_widget())
     shelf_->status_area_widget()->UpdateAfterLoginStatusChange(status);
 }
 
 void RootWindowController::HandleInitialDesktopBackgroundAnimationStarted() {
   if (CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kAshAnimateFromBootSplashScreen) &&
       boot_splash_screen_.get()) {
@@ skipping 368 matching lines @@
   aura::Window* overlay_container = CreateContainer(
       kShellWindowId_OverlayContainer,
       "OverlayContainer",
       lock_screen_related_containers);
   SetUsesScreenCoordinates(overlay_container);
 
   CreateContainer(kShellWindowId_PowerButtonAnimationContainer,
                   "PowerButtonAnimationContainer", root_window) ;
 }
 
+void RootWindowController::EnableTouchHudProjection() {
+  if (touch_hud_projection_)
+    return;
+  set_touch_hud_projection(new TouchHudProjection(root_window_.get()));
+}
+
+void RootWindowController::DisableTouchHudProjection() {
+  if (!touch_hud_projection_)
+    return;
+  touch_hud_projection_->Remove();
+}
+
+void RootWindowController::OnLoginStateChanged(user::LoginStatus status) {
+  shelf_->shelf_layout_manager()->UpdateVisibilityState();
+}
+
+void RootWindowController::OnTouchHudProjectionToggled(bool enabled) {
+  if (enabled)
+    EnableTouchHudProjection();
+  else
+    DisableTouchHudProjection();
+}
+
 }  // namespace internal
 }  // namespace ash