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 "components/bookmarks/browser/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,
  57                                    const std::set<GURL>& removed_urls) override;
  58   virtual void BookmarkNodeChanged(BookmarkModel* model,
  59                                    const BookmarkNode* node) override;
  60   virtual void BookmarkNodeFaviconChanged(BookmarkModel* model,
  61                                           const BookmarkNode* node) override;
  62   virtual void BookmarkNodeChildrenReordered(
  63       BookmarkModel* model,
  64       const BookmarkNode* node) override;
  65   virtual void BookmarkAllUserNodesRemoved(
  66       BookmarkModel* model,
  67       const std::set<GURL>& removed_urls) override;
  68
  69   // If necessary this function moves |node| into the corresponding folder for
  70   // the given |selected_index|.
  71   void MaybeChangeParent(const BookmarkNode* node, int selected_index);
  72
  73  private:
  74   // Returns the node at the specified |index|.
  75   const BookmarkNode* GetNodeAt(int index);
  76
  77   // Removes |node| from |items_|. Does nothing if |node| is not in |items_|.
  78   void RemoveNode(const BookmarkNode* node);
  79
  80   struct Item;
  81   std::vector<Item> items_;
  82
  83   BookmarkModel* bookmark_model_;
  84
  85   // The index of the original parent folder.
  86   int node_parent_index_;
  87
  88   ObserverList<ui::ComboboxModelObserver> observers_;
  89
  90   DISALLOW_COPY_AND_ASSIGN(RecentlyUsedFoldersComboModel);
  91 };
  92
  93 #endif  // CHROME_BROWSER_UI_BOOKMARKS_RECENTLY_USED_FOLDERS_COMBO_MODEL_H_