chrome/browser/ui/bookmarks/recently_used_folders_combo_model.h

   1 // Copyright (c) 2012 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 CHROME_BROWSER_UI_BOOKMARKS_RECENTLY_USED_FOLDERS_COMBO_MODEL_H_
   6 #define CHROME_BROWSER_UI_BOOKMARKS_RECENTLY_USED_FOLDERS_COMBO_MODEL_H_
   7
   8 #include <vector>
   9
  10 #include "base/basictypes.h"
  11 #include "base/compiler_specific.h"
  12 #include "base/observer_list.h"
  13 #include "chrome/browser/bookmarks/bookmark_model_observer.h"
  14 #include "ui/base/models/combobox_model.h"
  15
  16 class BookmarkModel;
  17 class BookmarkNode;
  18
  19 // Model for the combobox showing the list of folders to choose from. The
  20 // list always contains the Bookmarks Bar, Other Bookmarks and the parent
  21 // folder. The list also contains an extra item that shows the text
  22 // "Choose Another Folder...".
  23 class RecentlyUsedFoldersComboModel : public ui::ComboboxModel,
  24                                       public BookmarkModelObserver {
  25  public:
  26   RecentlyUsedFoldersComboModel(BookmarkModel* model, const BookmarkNode* node);
  27   virtual ~RecentlyUsedFoldersComboModel();
  28
  29   // Overridden from ui::ComboboxModel:
  30   virtual int GetItemCount() const OVERRIDE;
  31   virtual base::string16 GetItemAt(int index) OVERRIDE;
  32   virtual bool IsItemSeparatorAt(int index) OVERRIDE;
  33   virtual int GetDefaultIndex() const OVERRIDE;
  34   virtual void AddObserver(ui::ComboboxModelObserver* observer) OVERRIDE;
  35   virtual void RemoveObserver(ui::ComboboxModelObserver* observer) OVERRIDE;
  36
  37   // Overriden from BookmarkModelObserver:
  38   virtual void BookmarkModelLoaded(BookmarkModel* model,
  39                                    bool ids_reassigned) OVERRIDE;
  40   virtual void BookmarkModelBeingDeleted(BookmarkModel* model) OVERRIDE;
  41   virtual void BookmarkNodeMoved(BookmarkModel* model,
  42                                  const BookmarkNode* old_parent,
  43                                  int old_index,
  44                                  const BookmarkNode* new_parent,
  45                                  int new_index) OVERRIDE;
  46   virtual void BookmarkNodeAdded(BookmarkModel* model,
  47                                  const BookmarkNode* parent,
  48                                  int index) OVERRIDE;
  49   virtual void OnWillRemoveBookmarks(BookmarkModel* model,
  50                                      const BookmarkNode* parent,
  51                                      int old_index,
  52                                      const BookmarkNode* node) OVERRIDE;
  53   virtual void BookmarkNodeRemoved(BookmarkModel* model,
  54                                    const BookmarkNode* parent,
  55                                    int old_index,
  56                                    const BookmarkNode* node) OVERRIDE;
  57   virtual void BookmarkNodeChanged(BookmarkModel* model,
  58                                    const BookmarkNode* node) OVERRIDE;
  59   virtual void BookmarkNodeFaviconChanged(BookmarkModel* model,
  60                                           const BookmarkNode* node) OVERRIDE;
  61   virtual void BookmarkNodeChildrenReordered(
  62       BookmarkModel* model,
  63       const BookmarkNode* node) OVERRIDE;
  64   virtual void BookmarkAllNodesRemoved(BookmarkModel* model) OVERRIDE;
  65
  66   // If necessary this function moves |node| into the corresponding folder for
  67   // the given |selected_index|.
  68   void MaybeChangeParent(const BookmarkNode* node, int selected_index);
  69
  70  private:
  71   // Returns the node at the specified |index|.
  72   const BookmarkNode* GetNodeAt(int index);
  73
  74   // Removes |node| from |items_|. Does nothing if |node| is not in |items_|.
  75   void RemoveNode(const BookmarkNode* node);
  76
  77   struct Item;
  78   std::vector<Item> items_;
  79
  80   BookmarkModel* bookmark_model_;
  81
  82   // The index of the original parent folder.
  83   int node_parent_index_;
  84
  85   ObserverList<ui::ComboboxModelObserver> observers_;
  86
  87   DISALLOW_COPY_AND_ASSIGN(RecentlyUsedFoldersComboModel);
  88 };
  89
  90 #endif  // CHROME_BROWSER_UI_BOOKMARKS_RECENTLY_USED_FOLDERS_COMBO_MODEL_H_