Implement ui for re-parenting an item from an app list folder to another position or folder in the …

ui/app_list/views/folder_header_view.h

 // Copyright (c) 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 UI_APP_LIST_VIEWS_FOLDER_HEADER_VIEW_H_
 #define UI_APP_LIST_VIEWS_FOLDER_HEADER_VIEW_H_
 
 #include <string>
 
 #include "ui/app_list/app_list_item_observer.h"
@@ skipping 14 matching lines @@
 // FolderHeaderView contains a back button and an editable folder name field.
 class FolderHeaderView : public views::View,
                          public views::TextfieldController,
                          public views::ButtonListener,
                          public AppListItemObserver {
  public:
   explicit FolderHeaderView(FolderHeaderViewDelegate* delegate);
   virtual ~FolderHeaderView();
 
   void SetFolderItem(AppListFolderItem* folder_item);
+  void UpdateFolderNameVisibility(bool visible);
+  void OnFolderItemRemoved();
 
   // Overridden from views::View:
   virtual gfx::Size GetPreferredSize() OVERRIDE;
 
  private:
   class FolderNameView;
 
   // Updates UI.
   void Update();
 
-  // Overriden from views::View:
+  // views::View overrides:
   virtual void Layout() OVERRIDE;
   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
 
-  // Overridden from views::TextfieldController:
+  // views::TextfieldController overrides:
   virtual void ContentsChanged(views::Textfield* sender,
                                const base::string16& new_contents) OVERRIDE;
 
-  // Overridden from views::ButtonListener:
+  // views::ButtonListener overrides:
   virtual void ButtonPressed(views::Button* sender,
                              const ui::Event& event) OVERRIDE;
 
-  // Overridden from AppListItemObserver:
+  // AppListItemObserver overrides:
   virtual void ItemIconChanged() OVERRIDE;
   virtual void ItemTitleChanged() OVERRIDE;
   virtual void ItemHighlightedChanged() OVERRIDE;
   virtual void ItemIsInstallingChanged() OVERRIDE;
   virtual void ItemPercentDownloadedChanged() OVERRIDE;
 
   AppListFolderItem* folder_item_;  // Not owned.
 
   views::ImageButton* back_button_;  // Owned by views hierarchy.
   FolderNameView* folder_name_view_;  // Owned by views hierarchy.
 
   FolderHeaderViewDelegate* delegate_;
 
+  bool folder_name_visible_;
+
   DISALLOW_COPY_AND_ASSIGN(FolderHeaderView);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_VIEWS_FOLDER_HEADER_VIEW_H_