mash: Migrate wallpaper controllers to ash/common.

ash/common/wm_root_window_controller.h

 // Copyright 2016 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.
 
 #ifndef ASH_COMMON_WM_ROOT_WINDOW_CONTROLLER_H_
 #define ASH_COMMON_WM_ROOT_WINDOW_CONTROLLER_H_
 
 #include "ash/ash_export.h"
 #include "ash/common/wm/workspace/workspace_types.h"
 #include "base/macros.h"
 #include "ui/views/widget/widget.h"
 
 namespace gfx {
 class Point;
 }
 
 namespace ash {
 
 class AlwaysOnTopController;
+class AnimatingWallpaperWidgetController;
+class WallpaperWidgetController;
 class WmShelf;
 class WmShell;
 class WmWindow;
 class WorkspaceController;
 
 namespace wm {
 class RootWindowLayoutManager;
 }
 
 // Provides state associated with a root of a window hierarchy.
 class ASH_EXPORT WmRootWindowController {
  public:
   explicit WmRootWindowController(WmWindow* window);
   virtual ~WmRootWindowController();
 
   wm::RootWindowLayoutManager* root_window_layout_manager() {
     return root_window_layout_manager_;
   }
 
+  WallpaperWidgetController* wallpaper_widget_controller() {
+    return wallpaper_widget_controller_.get();
+  }
+  void SetWallpaperWidgetController(WallpaperWidgetController* controller);
+
+  AnimatingWallpaperWidgetController* animating_wallpaper_widget_controller() {
+    return animating_wallpaper_widget_controller_.get();
+  }
+  void SetAnimatingWallpaperWidgetController(
+      AnimatingWallpaperWidgetController* controller);
+
   WorkspaceController* workspace_controller() {
     return workspace_controller_.get();
   }
 
   wm::WorkspaceWindowState GetWorkspaceWindowState();
 
   virtual bool HasShelf() = 0;
 
   virtual WmShell* GetShell() = 0;
 
@@ skipping 15 matching lines @@
   // (in screen coordinates).
   //
   // NOTE: the returned window may not contain the location as resize handles
   // may extend outside the bounds of the window.
   virtual WmWindow* FindEventTarget(const gfx::Point& location_in_screen) = 0;
 
   // Gets the last location seen in a mouse event in this root window's
   // coordinates. This may return a point outside the root window's bounds.
   virtual gfx::Point GetLastMouseLocationInRoot() = 0;
 
+  // Called when the wallpaper animation has started or finished.
+  // TODO: port remaining classic ash wallpaper functionality here.
+  virtual void OnInitialWallpaperAnimationStarted();
+  virtual void OnWallpaperAnimationFinished(views::Widget* widget);
+
  protected:
   // Creates the containers (WmWindows) used by the shell.
   void CreateContainers();
 
   // Creates the LayoutManagers for the windows created by CreateContainers().
   void CreateLayoutManagers();
 
   void DeleteWorkspaceController();
 
  private:
   WmWindow* root_;
 
   wm::RootWindowLayoutManager* root_window_layout_manager_;
 
+  std::unique_ptr<WallpaperWidgetController> wallpaper_widget_controller_;
+  std::unique_ptr<AnimatingWallpaperWidgetController>
+      animating_wallpaper_widget_controller_;
   std::unique_ptr<WorkspaceController> workspace_controller_;
 
   DISALLOW_COPY_AND_ASSIGN(WmRootWindowController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_WM_ROOT_WINDOW_CONTROLLER_H_