Move some more files into ash... this time seed the window manager dir.

ui/aura_shell/shadow_controller.h

-// Copyright (c) 2011 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 UI_AURA_SHELL_SHADOW_CONTROLLER_H_
-#define UI_AURA_SHELL_SHADOW_CONTROLLER_H_
-#pragma once
-
-#include <map>
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "base/memory/linked_ptr.h"
-#include "ui/aura/root_window_observer.h"
-#include "ui/aura/window_observer.h"
-#include "ui/aura_shell/aura_shell_export.h"
-
-namespace aura {
-class Window;
-}
-namespace gfx {
-class Rect;
-}
-
-namespace aura_shell {
-namespace internal {
-
-class Shadow;
-
-// ShadowController observes changes to windows and creates and updates drop
-// shadows as needed.
-class AURA_SHELL_EXPORT ShadowController : public aura::RootWindowObserver,
-                                           public aura::WindowObserver {
-public:
-  class TestApi {
-   public:
-    explicit TestApi(ShadowController* controller) : controller_(controller) {}
-    ~TestApi() {}
-
-    Shadow* GetShadowForWindow(aura::Window* window) {
-      return controller_->GetShadowForWindow(window);
-    }
-
-   private:
-    ShadowController* controller_;  // not owned
-
-    DISALLOW_COPY_AND_ASSIGN(TestApi);
-  };
-
-  explicit ShadowController();
-  virtual ~ShadowController();
-
-  // aura::RootWindowObserver override:
-  virtual void OnWindowInitialized(aura::Window* window) OVERRIDE;
-
-  // aura::WindowObserver overrides:
-  virtual void OnWindowPropertyChanged(
-      aura::Window* window, const char* name, void* old) OVERRIDE;
-  virtual void OnWindowBoundsChanged(
-      aura::Window* window, const gfx::Rect& bounds) OVERRIDE;
-  virtual void OnWindowDestroyed(aura::Window* window) OVERRIDE;
-
- private:
-  typedef std::map<aura::Window*, linked_ptr<Shadow> > WindowShadowMap;
-
-  // Checks if |window| is visible and contains a property requesting a shadow.
-  bool ShouldShowShadowForWindow(aura::Window* window) const;
-
-  // Returns |window|'s shadow from |window_shadows_|, or NULL if no shadow
-  // exists.
-  Shadow* GetShadowForWindow(aura::Window* window);
-
-  // Shows or hides |window|'s shadow as needed (creating the shadow if
-  // necessary).
-  void HandlePossibleShadowVisibilityChange(aura::Window* window);
-
-  // Creates a new shadow for |window| and stores it in |window_shadows_|.  The
-  // shadow's bounds are initialized and it is added to the window's layer.
-  void CreateShadowForWindow(aura::Window* window);
-
-  WindowShadowMap window_shadows_;
-
-  DISALLOW_COPY_AND_ASSIGN(ShadowController);
-};
-
-}  // namepsace aura_shell
-}  // namepsace internal
-
-#endif  // UI_AURA_SHELL_SHADOW_CONTROLLER_H_