chrome/browser/ui/cocoa/bookmarks/bookmark_menu_bridge.h

   1 // Copyright (c) 2011 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 // C++ controller for the bookmark menu; one per AppController (which
   6 // means there is only one).  When bookmarks are changed, this class
   7 // takes care of updating Cocoa bookmark menus.  This is not named
   8 // BookmarkMenuController to help avoid confusion between languages.
   9 // This class needs to be C++, not ObjC, since it derives from
  10 // BookmarkModelObserver.
  11 //
  12 // Most Chromium Cocoa menu items are static from a nib (e.g. New
  13 // Tab), but may be enabled/disabled under certain circumstances
  14 // (e.g. Cut and Paste).  In addition, most Cocoa menu items have
  15 // firstResponder: as a target.  Unusually, bookmark menu items are
  16 // created dynamically.  They also have a target of
  17 // BookmarkMenuCocoaController instead of firstResponder.
  18 // See BookmarkMenuBridge::AddNodeToMenu()).
  19
  20 #ifndef CHROME_BROWSER_UI_COCOA_BOOKMARKS_BOOKMARK_MENU_BRIDGE_H_
  21 #define CHROME_BROWSER_UI_COCOA_BOOKMARKS_BOOKMARK_MENU_BRIDGE_H_
  22
  23 #include <map>
  24
  25 #include "base/mac/scoped_nsobject.h"
  26 #import "chrome/browser/ui/cocoa/main_menu_item.h"
  27 #include "components/bookmarks/browser/bookmark_model_observer.h"
  28
  29 class BookmarkNode;
  30 class Profile;
  31 @class NSImage;
  32 @class NSMenu;
  33 @class NSMenuItem;
  34 @class BookmarkMenuCocoaController;
  35
  36 class BookmarkMenuBridge : public BookmarkModelObserver,
  37                            public MainMenuItem {
  38  public:
  39   BookmarkMenuBridge(Profile* profile, NSMenu* menu);
  40   ~BookmarkMenuBridge() override;
  41
  42   // BookmarkModelObserver:
  43   void BookmarkModelLoaded(BookmarkModel* model, bool ids_reassigned) override;
  44   void BookmarkModelBeingDeleted(BookmarkModel* model) override;
  45   void BookmarkNodeMoved(BookmarkModel* model,
  46                          const BookmarkNode* old_parent,
  47                          int old_index,
  48                          const BookmarkNode* new_parent,
  49                          int new_index) override;
  50   void BookmarkNodeAdded(BookmarkModel* model,
  51                          const BookmarkNode* parent,
  52                          int index) override;
  53   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   void BookmarkAllUserNodesRemoved(BookmarkModel* model,
  59                                    const std::set<GURL>& removed_urls) override;
  60   void BookmarkNodeChanged(BookmarkModel* model,
  61                            const BookmarkNode* node) override;
  62   void BookmarkNodeFaviconChanged(BookmarkModel* model,
  63                                   const BookmarkNode* node) override;
  64   void BookmarkNodeChildrenReordered(BookmarkModel* model,
  65                                      const BookmarkNode* node) override;
  66
  67   // MainMenuItem:
  68   void ResetMenu() override;
  69   void BuildMenu() override;
  70
  71   // Rebuilds the main bookmark menu, if it has been marked invalid.
  72   void UpdateMenu(NSMenu* bookmark_menu);
  73
  74   // Rebuilds a bookmark menu that's a submenu of another menu.
  75   void UpdateSubMenu(NSMenu* bookmark_menu);
  76
  77   // I wish I had a "friend @class" construct.
  78   BookmarkModel* GetBookmarkModel();
  79   Profile* GetProfile();
  80
  81  protected:
  82   // Rebuilds the bookmark content of supplied menu.
  83   void UpdateMenuInternal(NSMenu* bookmark_menu, bool is_submenu);
  84
  85   // Clear all bookmarks from the given bookmark menu.
  86   void ClearBookmarkMenu(NSMenu* menu);
  87
  88   // Mark the bookmark menu as being invalid.
  89   void InvalidateMenu()  { menuIsValid_ = false; }
  90
  91   // Helper for adding the node as a submenu to the menu with the |node|'s title
  92   // and the given |image| as its icon.
  93   // If |add_extra_items| is true, also adds extra menu items at bottom of
  94   // menu, such as "Open All Bookmarks".
  95   void AddNodeAsSubmenu(NSMenu* menu,
  96                         const BookmarkNode* node,
  97                         NSImage* image,
  98                         bool add_extra_items);
  99
 100   // Helper for recursively adding items to our bookmark menu.
 101   // All children of |node| will be added to |menu|.
 102   // If |add_extra_items| is true, also adds extra menu items at bottom of
 103   // menu, such as "Open All Bookmarks".
 104   // TODO(jrg): add a counter to enforce maximum nodes added
 105   void AddNodeToMenu(const BookmarkNode* node, NSMenu* menu,
 106                      bool add_extra_items);
 107
 108   // Helper for adding an item to our bookmark menu. An item which has a
 109   // localized title specified by |message_id| will be added to |menu|.
 110   // The item is also bound to |node| by tag. |command_id| selects the action.
 111   void AddItemToMenu(int command_id,
 112                      int message_id,
 113                      const BookmarkNode* node,
 114                      NSMenu* menu,
 115                      bool enabled);
 116
 117   // This configures an NSMenuItem with all the data from a BookmarkNode. This
 118   // is used to update existing menu items, as well as to configure newly
 119   // created ones, like in AddNodeToMenu().
 120   // |set_title| is optional since it is only needed when we get a
 121   // node changed notification.  On initial build of the menu we set
 122   // the title as part of alloc/init.
 123   void ConfigureMenuItem(const BookmarkNode* node, NSMenuItem* item,
 124                          bool set_title);
 125
 126   // Returns the NSMenuItem for a given BookmarkNode.
 127   NSMenuItem* MenuItemForNode(const BookmarkNode* node);
 128
 129   // Return the Bookmark menu.
 130   virtual NSMenu* BookmarkMenu();
 131
 132   // Start watching the bookmarks for changes.
 133   void ObserveBookmarkModel();
 134
 135  private:
 136   friend class BookmarkMenuBridgeTest;
 137
 138   // True iff the menu is up-to-date with the actual BookmarkModel.
 139   bool menuIsValid_;
 140
 141   Profile* profile_;  // weak
 142   BookmarkMenuCocoaController* controller_;  // strong
 143
 144   // The folder image so we can use one copy for all.
 145   base::scoped_nsobject<NSImage> folder_image_;
 146
 147   // In order to appropriately update items in the bookmark menu, without
 148   // forcing a rebuild, map the model's nodes to menu items.
 149   std::map<const BookmarkNode*, NSMenuItem*> bookmark_nodes_;
 150 };
 151
 152 #endif  // CHROME_BROWSER_UI_COCOA_BOOKMARKS_BOOKMARK_MENU_BRIDGE_H_