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 namespace bookmarks {
  17 class BookmarkModel;
  18 class BookmarkNode;
  19 }
  20
  21 // Model for the combobox showing the list of folders to choose from. The
  22 // list always contains the Bookmarks Bar, Other Bookmarks and the parent
  23 // folder. The list also contains an extra item that shows the text
  24 // "Choose Another Folder...".
  25 class RecentlyUsedFoldersComboModel : public ui::ComboboxModel,
  26                                       public bookmarks::BookmarkModelObserver {
  27  public:
  28   RecentlyUsedFoldersComboModel(bookmarks::BookmarkModel* model,
  29                                 const bookmarks::BookmarkNode* node);
  30   ~RecentlyUsedFoldersComboModel() override;
  31
  32   // Overridden from ui::ComboboxModel:
  33   int GetItemCount() const override;
  34   base::string16 GetItemAt(int index) override;
  35   bool IsItemSeparatorAt(int index) override;
  36   int GetDefaultIndex() const override;
  37   void AddObserver(ui::ComboboxModelObserver* observer) override;
  38   void RemoveObserver(ui::ComboboxModelObserver* observer) override;
  39
  40   // Overriden from bookmarks::BookmarkModelObserver:
  41   void BookmarkModelLoaded(bookmarks::BookmarkModel* model,
  42                            bool ids_reassigned) override;
  43   void BookmarkModelBeingDeleted(bookmarks::BookmarkModel* model) override;
  44   void BookmarkNodeMoved(bookmarks::BookmarkModel* model,
  45                          const bookmarks::BookmarkNode* old_parent,
  46                          int old_index,
  47                          const bookmarks::BookmarkNode* new_parent,
  48                          int new_index) override;
  49   void BookmarkNodeAdded(bookmarks::BookmarkModel* model,
  50                          const bookmarks::BookmarkNode* parent,
  51                          int index) override;
  52   void OnWillRemoveBookmarks(bookmarks::BookmarkModel* model,
  53                              const bookmarks::BookmarkNode* parent,
  54                              int old_index,
  55                              const bookmarks::BookmarkNode* node) override;
  56   void BookmarkNodeRemoved(bookmarks::BookmarkModel* model,
  57                            const bookmarks::BookmarkNode* parent,
  58                            int old_index,
  59                            const bookmarks::BookmarkNode* node,
  60                            const std::set<GURL>& removed_urls) override;
  61   void BookmarkNodeChanged(bookmarks::BookmarkModel* model,
  62                            const bookmarks::BookmarkNode* node) override;
  63   void BookmarkNodeFaviconChanged(bookmarks::BookmarkModel* model,
  64                                   const bookmarks::BookmarkNode* node) override;
  65   void BookmarkNodeChildrenReordered(
  66       bookmarks::BookmarkModel* model,
  67       const bookmarks::BookmarkNode* node) override;
  68   void BookmarkAllUserNodesRemoved(bookmarks::BookmarkModel* model,
  69                                    const std::set<GURL>& removed_urls) override;
  70
  71   // If necessary this function moves |node| into the corresponding folder for
  72   // the given |selected_index|.
  73   void MaybeChangeParent(const bookmarks::BookmarkNode* node,
  74                          int selected_index);
  75
  76  private:
  77   // Returns the node at the specified |index|.
  78   const bookmarks::BookmarkNode* GetNodeAt(int index);
  79
  80   // Removes |node| from |items_|. Does nothing if |node| is not in |items_|.
  81   void RemoveNode(const bookmarks::BookmarkNode* node);
  82
  83   struct Item;
  84   std::vector<Item> items_;
  85
  86   bookmarks::BookmarkModel* bookmark_model_;
  87
  88   // The index of the original parent folder.
  89   int node_parent_index_;
  90
  91   base::ObserverList<ui::ComboboxModelObserver> observers_;
  92
  93   DISALLOW_COPY_AND_ASSIGN(RecentlyUsedFoldersComboModel);
  94 };
  95
  96 #endif  // CHROME_BROWSER_UI_BOOKMARKS_RECENTLY_USED_FOLDERS_COMBO_MODEL_H_