chrome/browser/ui/gtk/bookmarks/bookmark_sub_menu_model_gtk.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_GTK_BOOKMARKS_BOOKMARK_SUB_MENU_MODEL_GTK_H_
   6 #define CHROME_BROWSER_UI_GTK_BOOKMARKS_BOOKMARK_SUB_MENU_MODEL_GTK_H_
   7
   8 #include <vector>
   9
  10 #include "chrome/browser/bookmarks/base_bookmark_model_observer.h"
  11 #include "ui/base/models/simple_menu_model.h"
  12 #include "ui/base/window_open_disposition.h"
  13
  14 class Browser;
  15 class BookmarkModel;
  16 class BookmarkNode;
  17 class MenuGtk;  // See below for why we need this.
  18 class Profile;
  19
  20 namespace content {
  21 class PageNavigator;
  22 }
  23
  24 // BookmarkNodeMenuModel builds a SimpleMenuModel on demand when the menu is
  25 // shown, and automatically destroys child models when the menu is closed.
  26 class BookmarkNodeMenuModel : public ui::SimpleMenuModel {
  27  public:
  28   BookmarkNodeMenuModel(ui::SimpleMenuModel::Delegate* delegate,
  29                         BookmarkModel* model,
  30                         const BookmarkNode* node,
  31                         content::PageNavigator* page_navigator,
  32                         Profile* profile);
  33   virtual ~BookmarkNodeMenuModel();
  34
  35   // From SimpleMenuModel. Takes care of deleting submenus.
  36   // Note that this is not virtual. That's OK for our use.
  37   void Clear();
  38
  39   // From MenuModel via SimpleMenuModel.
  40   virtual void MenuWillShow() OVERRIDE;
  41   virtual void MenuClosed() OVERRIDE;
  42   virtual void ActivatedAt(int index) OVERRIDE;
  43   virtual void ActivatedAt(int index, int event_flags) OVERRIDE;
  44
  45  protected:
  46   // Adds all bookmark items to the model. Does not clear the model first.
  47   void PopulateMenu();
  48
  49   // Add a submenu for the given bookmark folder node.
  50   void AddSubMenuForNode(const BookmarkNode* node);
  51
  52   BookmarkModel* model() const { return model_; }
  53   void set_model(BookmarkModel* model) { model_ = model; }
  54
  55   const BookmarkNode* node() const { return node_; }
  56   void set_node(const BookmarkNode* node) { node_ = node; }
  57
  58  private:
  59   // Uses the page navigator to open the bookmark at the given index.
  60   void NavigateToMenuItem(int index, WindowOpenDisposition disposition);
  61
  62   // The bookmark model whose bookmarks we will show. Note that in the top-level
  63   // bookmark menu, this may be null. (It is set only when the menu is shown.)
  64   BookmarkModel* model_;
  65
  66   // The bookmark node for the folder that this model will show. Note that in
  67   // the top-level bookmark menu, this may be null, as above.
  68   const BookmarkNode* node_;
  69
  70   // The page navigator used to open bookmarks in ActivatedAt().
  71   content::PageNavigator* page_navigator_;
  72
  73   Profile* profile_;
  74
  75   // A list of the submenus we own and will need to delete.
  76   std::vector<BookmarkNodeMenuModel*> submenus_;
  77
  78   DISALLOW_COPY_AND_ASSIGN(BookmarkNodeMenuModel);
  79 };
  80
  81 // This is the top-level bookmark menu model. It handles prepending a few fixed
  82 // items before the bookmarks. Child menus are all plain BookmarkNodeMenuModels.
  83 // This class also handles watching the bookmark model and forcing the menu to
  84 // close if it changes while the menu is open.
  85 class BookmarkSubMenuModel : public BookmarkNodeMenuModel,
  86                              public BaseBookmarkModelObserver {
  87  public:
  88   BookmarkSubMenuModel(ui::SimpleMenuModel::Delegate* delegate,
  89                        Browser* browser);
  90
  91   virtual ~BookmarkSubMenuModel();
  92
  93   // See below; this is used to allow closing the menu when bookmarks change.
  94   void SetMenuGtk(MenuGtk* menu) { menu_ = menu; }
  95
  96   // BaseBookmarkModelObserver:
  97   virtual void BookmarkModelLoaded(BookmarkModel* model,
  98                                    bool ids_reassigned) OVERRIDE;
  99   virtual void BookmarkModelChanged() OVERRIDE;
 100   virtual void BookmarkModelBeingDeleted(BookmarkModel* model) OVERRIDE;
 101
 102   // BookmarkNodeMenuModel:
 103   virtual void MenuWillShow() OVERRIDE;
 104   virtual void MenuClosed() OVERRIDE;
 105   virtual void ActivatedAt(int index) OVERRIDE;
 106   virtual void ActivatedAt(int index, int event_flags) OVERRIDE;
 107   virtual bool IsEnabledAt(int index) const OVERRIDE;
 108   virtual bool IsVisibleAt(int index) const OVERRIDE;
 109
 110   // Returns true if the command id is for a bookmark item.
 111   static bool IsBookmarkItemCommandId(int command_id);
 112
 113  private:
 114   Browser* browser_;
 115
 116   // The number of fixed items shown before the bookmarks.
 117   int fixed_items_;
 118   // The index of the first non-bookmark item after the bookmarks.
 119   int bookmark_end_;
 120
 121   // We need to be able to call Cancel() on the wrench menu when bookmarks
 122   // change. This is a bit of an abstraction violation but it could be converted
 123   // to an interface with just a Cancel() method if necessary.
 124   MenuGtk* menu_;
 125
 126   // We keep track of whether the bookmark submenu is currently showing. If it's
 127   // not showing, then we don't need to forcibly close the entire wrench menu
 128   // when the bookmark model loads.
 129   bool menu_showing_;
 130
 131   DISALLOW_COPY_AND_ASSIGN(BookmarkSubMenuModel);
 132 };
 133
 134 #endif  // CHROME_BROWSER_UI_GTK_BOOKMARKS_BOOKMARK_SUB_MENU_MODEL_GTK_H_