src/ui/app_list/views/folder_header_view.h

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef UI_APP_LIST_VIEWS_FOLDER_HEADER_VIEW_H_
   6 #define UI_APP_LIST_VIEWS_FOLDER_HEADER_VIEW_H_
   7
   8 #include <string>
   9
  10 #include "ui/app_list/app_list_export.h"
  11 #include "ui/app_list/app_list_item_observer.h"
  12 #include "ui/views/controls/button/button.h"
  13 #include "ui/views/controls/textfield/textfield_controller.h"
  14 #include "ui/views/view.h"
  15
  16 namespace views {
  17 class ImageButton;
  18 }  // namespace views
  19
  20 namespace app_list {
  21
  22 class AppListFolderItem;
  23 class AppListFolderView;
  24 class FolderHeaderViewDelegate;
  25
  26 namespace test {
  27 class FolderHeaderViewTest;
  28 }
  29
  30 // FolderHeaderView contains a back button and an editable folder name field.
  31 class APP_LIST_EXPORT FolderHeaderView : public views::View,
  32                                          public views::TextfieldController,
  33                                          public views::ButtonListener,
  34                                          public AppListItemObserver {
  35  public:
  36   explicit FolderHeaderView(FolderHeaderViewDelegate* delegate);
  37   virtual ~FolderHeaderView();
  38
  39   void SetFolderItem(AppListFolderItem* folder_item);
  40   void UpdateFolderNameVisibility(bool visible);
  41   void OnFolderItemRemoved();
  42
  43   // Overridden from views::View:
  44   virtual gfx::Size GetPreferredSize() const OVERRIDE;
  45
  46  private:
  47   class FolderNameView;
  48   friend class test::FolderHeaderViewTest;
  49
  50   // Updates UI.
  51   void Update();
  52
  53   // Updates the accessible name of the folder name control.
  54   void UpdateFolderNameAccessibleName();
  55
  56   // Gets and sets the folder name for test.
  57   const base::string16& GetFolderNameForTest();
  58   void SetFolderNameForTest(const base::string16& name);
  59
  60   // Returns true if folder name is enabled, only for testing use.
  61   bool IsFolderNameEnabledForTest() const;
  62
  63   // views::View overrides:
  64   virtual void Layout() OVERRIDE;
  65   virtual bool OnKeyPressed(const ui::KeyEvent& event) OVERRIDE;
  66   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
  67
  68   // views::TextfieldController overrides:
  69   virtual void ContentsChanged(views::Textfield* sender,
  70                                const base::string16& new_contents) OVERRIDE;
  71
  72   // views::ButtonListener overrides:
  73   virtual void ButtonPressed(views::Button* sender,
  74                              const ui::Event& event) OVERRIDE;
  75
  76   // AppListItemObserver overrides:
  77   virtual void ItemNameChanged() OVERRIDE;
  78
  79   AppListFolderItem* folder_item_;  // Not owned.
  80
  81   views::ImageButton* back_button_;  // Owned by views hierarchy.
  82   FolderNameView* folder_name_view_;  // Owned by views hierarchy.
  83
  84   const base::string16 folder_name_placeholder_text_;
  85
  86   FolderHeaderViewDelegate* delegate_;
  87
  88   bool folder_name_visible_;
  89
  90   DISALLOW_COPY_AND_ASSIGN(FolderHeaderView);
  91 };
  92
  93 }  // namespace app_list
  94
  95 #endif  // UI_APP_LIST_VIEWS_FOLDER_HEADER_VIEW_H_