ui/app_list/app_list_folder_item.h

   1 // Copyright 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_APP_LIST_FOLDER_ITEM_H_
   6 #define UI_APP_LIST_APP_LIST_FOLDER_ITEM_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "ui/app_list/app_list_export.h"
  12 #include "ui/app_list/app_list_item.h"
  13 #include "ui/app_list/app_list_item_list_observer.h"
  14 #include "ui/app_list/app_list_item_observer.h"
  15 #include "ui/gfx/geometry/rect.h"
  16
  17 namespace app_list {
  18
  19 class AppListItemList;
  20
  21 typedef std::vector<gfx::Rect> Rects;
  22
  23 // AppListFolderItem implements the model/controller for folders.
  24 class APP_LIST_EXPORT AppListFolderItem : public AppListItem,
  25                                           public AppListItemListObserver,
  26                                           public AppListItemObserver {
  27  public:
  28   // The folder type affects folder behavior.
  29   enum FolderType {
  30     // Default folder type.
  31     FOLDER_TYPE_NORMAL,
  32     // Items can not be moved to/from OEM folders in the UI.
  33     FOLDER_TYPE_OEM
  34   };
  35
  36   static const char kItemType[];
  37
  38   AppListFolderItem(const std::string& id, FolderType folder_type);
  39   virtual ~AppListFolderItem();
  40
  41   // Updates the folder's icon.
  42   void UpdateIcon();
  43
  44   // Returns the icon of one of the top items with |item_index|.
  45   const gfx::ImageSkia& GetTopIcon(size_t item_index);
  46
  47   // Returns the target icon bounds for |item| to fly back to its parent folder
  48   // icon in animation UI. If |item| is one of the top item icon, this will
  49   // match its corresponding top item icon in the folder icon. Otherwise,
  50   // the target icon bounds is centered at the |folder_icon_bounds| with
  51   // the same size of the top item icon.
  52   // The Rect returned is in the same coordinates of |folder_icon_bounds|.
  53   gfx::Rect GetTargetIconRectInFolderForItem(
  54       AppListItem* item, const gfx::Rect& folder_icon_bounds);
  55
  56   AppListItemList* item_list() { return item_list_.get(); }
  57   const AppListItemList* item_list() const { return item_list_.get(); }
  58
  59   FolderType folder_type() const { return folder_type_; }
  60
  61   // AppListItem
  62   virtual void Activate(int event_flags) override;
  63   virtual const char* GetItemType() const override;
  64   virtual ui::MenuModel* GetContextMenuModel() override;
  65   virtual AppListItem* FindChildItem(const std::string& id) override;
  66   virtual size_t ChildItemCount() const override;
  67   virtual void OnExtensionPreferenceChanged() override;
  68   virtual bool CompareForTest(const AppListItem* other) const override;
  69
  70   // Calculates the top item icons' bounds inside |folder_icon_bounds|.
  71   // Returns the bounds of top item icons in sequence of top left, top right,
  72   // bottom left, bottom right.
  73   static Rects GetTopIconsBounds(const gfx::Rect& folder_icon_bounds);
  74
  75   // Returns an id for a new folder.
  76   static std::string GenerateId();
  77
  78  private:
  79   // AppListItemObserver
  80   virtual void ItemIconChanged() override;
  81
  82   // AppListItemListObserver
  83   virtual void OnListItemAdded(size_t index, AppListItem* item) override;
  84   virtual void OnListItemRemoved(size_t index,
  85                                  AppListItem* item) override;;
  86   virtual void OnListItemMoved(size_t from_index,
  87                                size_t to_index,
  88                                AppListItem* item) override;
  89
  90   void UpdateTopItems();
  91
  92   // The type of folder; may affect behavior of folder views.
  93   const FolderType folder_type_;
  94
  95   // List of items in the folder.
  96   scoped_ptr<AppListItemList> item_list_;
  97
  98   // Top items for generating folder icon.
  99   std::vector<AppListItem*> top_items_;
 100
 101   DISALLOW_COPY_AND_ASSIGN(AppListFolderItem);
 102 };
 103
 104 }  // namespace app_list
 105
 106 #endif  // UI_APP_LIST_APP_LIST_FOLDER_ITEM_H_