Refactor LauncherDelegate

ash/launcher/app_list_launcher_item_delegate.h

+// Copyright 2013 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_LAUNCHER_APP_LIST_LAUNCHER_ITEM_DELEGATE_H_
+#define ASH_LAUNCHER_APP_LIST_LAUNCHER_ITEM_DELEGATE_H_
+
+#include "ash/launcher/launcher_item_delegate.h"
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+
+namespace ash {
+namespace internal {
+
+// LauncherItemDelegate for TYPE_APP_LIST.
+class AppListLauncherItemDelegate : public LauncherItemDelegate {
+ public:
+  AppListLauncherItemDelegate();
+
+  virtual ~AppListLauncherItemDelegate();
+
+  // ash::LauncherItemDelegate overrides:
+  virtual void ItemSelected(const LauncherItem& item,
+                            const ui::Event& event) OVERRIDE;
+  virtual base::string16 GetTitle(const LauncherItem& item) OVERRIDE;
+  virtual ui::MenuModel* CreateContextMenu(
+      const LauncherItem& item,
+      aura::RootWindow* root_window) OVERRIDE;
+  virtual LauncherMenuModel* CreateApplicationMenu(
+      const LauncherItem& item,
+      int event_flags) OVERRIDE;
+  virtual bool IsDraggable(const LauncherItem& item) OVERRIDE;
+  virtual bool ShouldShowTooltip(const LauncherItem& item) OVERRIDE;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(AppListLauncherItemDelegate);
+};
+
+}  // namespace internal
+}  // namespace ash
+
+#endif  // ASH_LAUNCHER_APP_LIST_LAUNCHER_ITEM_DELEGATE_H_