chrome/browser/ui/views/bookmarks/bookmark_menu_controller_views.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_VIEWS_BOOKMARKS_BOOKMARK_MENU_CONTROLLER_VIEWS_H_
   6 #define CHROME_BROWSER_UI_VIEWS_BOOKMARKS_BOOKMARK_MENU_CONTROLLER_VIEWS_H_
   7
   8 #include <set>
   9
  10 #include "base/compiler_specific.h"
  11 #include "chrome/browser/bookmarks/base_bookmark_model_observer.h"
  12 #include "chrome/browser/bookmarks/bookmark_node_data.h"
  13 #include "ui/views/controls/menu/menu_delegate.h"
  14 #include "ui/views/controls/menu/menu_item_view.h"
  15
  16 class BookmarkBarView;
  17 class BookmarkMenuControllerObserver;
  18 class BookmarkMenuDelegate;
  19 class BookmarkNode;
  20 class Browser;
  21
  22 namespace content {
  23 class PageNavigator;
  24 }
  25
  26 namespace ui {
  27 class OSExchangeData;
  28 }
  29
  30 namespace views {
  31 class MenuButton;
  32 class MenuRunner;
  33 class Widget;
  34 }
  35
  36 // BookmarkMenuController is responsible for showing a menu of bookmarks,
  37 // each item in the menu represents a bookmark.
  38 // BookmarkMenuController deletes itself as necessary, although the menu can
  39 // be explicitly hidden by way of the Cancel method.
  40 class BookmarkMenuController : public BaseBookmarkModelObserver,
  41                                public views::MenuDelegate {
  42  public:
  43   // Creates a BookmarkMenuController showing the children of |node| starting
  44   // at |start_child_index|.
  45   BookmarkMenuController(Browser* browser,
  46                          content::PageNavigator* page_navigator,
  47                          views::Widget* parent,
  48                          const BookmarkNode* node,
  49                          int start_child_index);
  50
  51   void RunMenuAt(BookmarkBarView* bookmark_bar, bool for_drop);
  52
  53   void clear_bookmark_bar() {
  54     bookmark_bar_ = NULL;
  55   }
  56
  57   // Hides the menu.
  58   void Cancel();
  59
  60   // Returns the node the menu is showing for.
  61   const BookmarkNode* node() const { return node_; }
  62
  63   // Returns the menu.
  64   views::MenuItemView* menu() const;
  65
  66   // Returns the context menu, or NULL if the context menu isn't showing.
  67   views::MenuItemView* context_menu() const;
  68
  69   // Sets the page navigator.
  70   void SetPageNavigator(content::PageNavigator* navigator);
  71
  72   void set_observer(BookmarkMenuControllerObserver* observer) {
  73     observer_ = observer;
  74   }
  75
  76   // views::MenuDelegate:
  77   virtual string16 GetTooltipText(int id, const gfx::Point& p) const OVERRIDE;
  78   virtual bool IsTriggerableEvent(views::MenuItemView* view,
  79                                   const ui::Event& e) OVERRIDE;
  80   virtual void ExecuteCommand(int id, int mouse_event_flags) OVERRIDE;
  81   virtual bool ShouldExecuteCommandWithoutClosingMenu(
  82       int id,
  83       const ui::Event& e) OVERRIDE;
  84   virtual bool GetDropFormats(
  85       views::MenuItemView* menu,
  86       int* formats,
  87       std::set<ui::OSExchangeData::CustomFormat>* custom_formats) OVERRIDE;
  88   virtual bool AreDropTypesRequired(views::MenuItemView* menu) OVERRIDE;
  89   virtual bool CanDrop(views::MenuItemView* menu,
  90                        const ui::OSExchangeData& data) OVERRIDE;
  91   virtual int GetDropOperation(views::MenuItemView* item,
  92                                const ui::DropTargetEvent& event,
  93                                DropPosition* position) OVERRIDE;
  94   virtual int OnPerformDrop(views::MenuItemView* menu,
  95                             DropPosition position,
  96                             const ui::DropTargetEvent& event) OVERRIDE;
  97   virtual bool ShowContextMenu(views::MenuItemView* source,
  98                                int id,
  99                                const gfx::Point& p,
 100                                ui::MenuSourceType source_type) OVERRIDE;
 101   virtual void DropMenuClosed(views::MenuItemView* menu) OVERRIDE;
 102   virtual bool CanDrag(views::MenuItemView* menu) OVERRIDE;
 103   virtual void WriteDragData(views::MenuItemView* sender,
 104                              ui::OSExchangeData* data) OVERRIDE;
 105   virtual int GetDragOperations(views::MenuItemView* sender) OVERRIDE;
 106   virtual views::MenuItemView* GetSiblingMenu(
 107       views::MenuItemView* menu,
 108       const gfx::Point& screen_point,
 109       views::MenuItemView::AnchorPosition* anchor,
 110       bool* has_mnemonics,
 111       views::MenuButton** button) OVERRIDE;
 112   virtual int GetMaxWidthForMenu(views::MenuItemView* view) OVERRIDE;
 113
 114   // BaseBookmarkModelObserver:
 115   virtual void BookmarkModelChanged() OVERRIDE;
 116
 117  private:
 118   // BookmarkMenuController deletes itself as necessary.
 119   virtual ~BookmarkMenuController();
 120
 121   scoped_ptr<views::MenuRunner> menu_runner_;
 122
 123   scoped_ptr<BookmarkMenuDelegate> menu_delegate_;
 124
 125   // The node we're showing the contents of.
 126   const BookmarkNode* node_;
 127
 128   // Data for the drop.
 129   BookmarkNodeData drop_data_;
 130
 131   // The observer, may be null.
 132   BookmarkMenuControllerObserver* observer_;
 133
 134   // Is the menu being shown for a drop?
 135   bool for_drop_;
 136
 137   // The bookmark bar. This is only non-null if we're showing a menu item for a
 138   // folder on the bookmark bar and not for drop, or if the BookmarkBarView has
 139   // been destroyed before the menu.
 140   BookmarkBarView* bookmark_bar_;
 141
 142   DISALLOW_COPY_AND_ASSIGN(BookmarkMenuController);
 143 };
 144
 145 #endif  // CHROME_BROWSER_UI_VIEWS_BOOKMARKS_BOOKMARK_MENU_CONTROLLER_VIEWS_H_