[Aura] A temp app list window.

chrome/browser/ui/views/aura/app_list_window.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 CHROME_BROWSER_UI_VIEWS_AURA_APP_LIST_WINDOW_H_
+#define CHROME_BROWSER_UI_VIEWS_AURA_APP_LIST_WINDOW_H_
+#pragma once
+
+#include "ui/aura/desktop_observer.h"
+#include "views/widget/widget_delegate.h"
+
+class DOMView;
+
+namespace views {
+class Widget;
+}
+
+class AppListWindow : public views::WidgetDelegate,
+                      public aura::DesktopObserver {
+ public:
+  // Show/hide app list window.
+  static void Show(bool show);

[sky, 2011/10/27 23:52:34]

Show(false) is a bit weird. Either name it SetVisible(bool) or provide Show and
Hide.

+
+  // Whether app list window is shown or being shown.
+  static bool IsShowing();
+
+ private:
+  AppListWindow();
+  virtual ~AppListWindow();
+
+  // Overridden from views::WidgetDelegate:
+  virtual void DeleteDelegate() OVERRIDE;
+  virtual views::View* GetContentsView() OVERRIDE;
+  virtual void WindowClosing() OVERRIDE;
+  virtual views::Widget* GetWidget() OVERRIDE;
+  virtual const views::Widget* GetWidget() const OVERRIDE;
+
+  // aura::DesktopObserver overrides:
+  virtual void OnActiveWindowChanged(aura::Window* active) OVERRIDE;
+
+  // Initializes the window.
+  void Init();
+
+  // Shows/hides the window.
+  void Show(bool show, bool animate);
+
+  bool is_showing() const {
+    return is_showing_;
+  }
+
+  // Current visible app list window.
+  static AppListWindow* instance_;
+
+  views::Widget* widget_;
+  DOMView* contents_;
+  bool is_showing_;
+
+  DISALLOW_COPY_AND_ASSIGN(AppListWindow);
+};
+
+#endif  // CHROME_BROWSER_UI_VIEWS_AURA_APP_LIST_WINDOW_H_