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 "components/bookmarks/browser/base_bookmark_model_observer.h"
  12 #include "components/bookmarks/browser/bookmark_node_data.h"
  13 #include "ui/views/controls/menu/menu_delegate.h"
  14
  15 class BookmarkBarView;
  16 class BookmarkMenuControllerObserver;
  17 class BookmarkMenuDelegate;
  18 class Browser;
  19
  20 namespace bookmarks {
  21 class BookmarkNode;
  22 }
  23
  24 namespace content {
  25 class PageNavigator;
  26 }
  27
  28 namespace ui {
  29 class OSExchangeData;
  30 }
  31
  32 namespace views {
  33 class MenuButton;
  34 class MenuItemView;
  35 class MenuRunner;
  36 class Widget;
  37 }
  38
  39 // BookmarkMenuController is responsible for showing a menu of bookmarks,
  40 // each item in the menu represents a bookmark.
  41 // BookmarkMenuController deletes itself as necessary, although the menu can
  42 // be explicitly hidden by way of the Cancel method.
  43 class BookmarkMenuController : public bookmarks::BaseBookmarkModelObserver,
  44                                public views::MenuDelegate {
  45  public:
  46   // Creates a BookmarkMenuController showing the children of |node| starting
  47   // at |start_child_index|.
  48   BookmarkMenuController(Browser* browser,
  49                          content::PageNavigator* page_navigator,
  50                          views::Widget* parent,
  51                          const bookmarks::BookmarkNode* node,
  52                          int start_child_index,
  53                          bool for_drop);
  54
  55   void RunMenuAt(BookmarkBarView* bookmark_bar);
  56
  57   void clear_bookmark_bar() {
  58     bookmark_bar_ = NULL;
  59   }
  60
  61   // Hides the menu.
  62   void Cancel();
  63
  64   // Returns the node the menu is showing for.
  65   const bookmarks::BookmarkNode* node() const { return node_; }
  66
  67   // Returns the menu.
  68   views::MenuItemView* menu() const;
  69
  70   // Returns the context menu, or NULL if the context menu isn't showing.
  71   views::MenuItemView* context_menu() const;
  72
  73   // Sets the page navigator.
  74   void SetPageNavigator(content::PageNavigator* navigator);
  75
  76   void set_observer(BookmarkMenuControllerObserver* observer) {
  77     observer_ = observer;
  78   }
  79
  80   // views::MenuDelegate:
  81   base::string16 GetTooltipText(int id, const gfx::Point& p) const override;
  82   bool IsTriggerableEvent(views::MenuItemView* view,
  83                           const ui::Event& e) override;
  84   void ExecuteCommand(int id, int mouse_event_flags) override;
  85   bool ShouldExecuteCommandWithoutClosingMenu(int id,
  86                                               const ui::Event& e) override;
  87   bool GetDropFormats(
  88       views::MenuItemView* menu,
  89       int* formats,
  90       std::set<ui::OSExchangeData::CustomFormat>* custom_formats) override;
  91   bool AreDropTypesRequired(views::MenuItemView* menu) override;
  92   bool CanDrop(views::MenuItemView* menu,
  93                const ui::OSExchangeData& data) override;
  94   int GetDropOperation(views::MenuItemView* item,
  95                        const ui::DropTargetEvent& event,
  96                        DropPosition* position) override;
  97   int OnPerformDrop(views::MenuItemView* menu,
  98                     DropPosition position,
  99                     const ui::DropTargetEvent& event) override;
 100   bool ShowContextMenu(views::MenuItemView* source,
 101                        int id,
 102                        const gfx::Point& p,
 103                        ui::MenuSourceType source_type) override;
 104   void DropMenuClosed(views::MenuItemView* menu) override;
 105   bool CanDrag(views::MenuItemView* menu) override;
 106   void WriteDragData(views::MenuItemView* sender,
 107                      ui::OSExchangeData* data) override;
 108   int GetDragOperations(views::MenuItemView* sender) override;
 109   views::MenuItemView* GetSiblingMenu(views::MenuItemView* menu,
 110                                       const gfx::Point& screen_point,
 111                                       views::MenuAnchorPosition* anchor,
 112                                       bool* has_mnemonics,
 113                                       views::MenuButton** button) override;
 114   int GetMaxWidthForMenu(views::MenuItemView* view) override;
 115   void WillShowMenu(views::MenuItemView* menu) override;
 116
 117   // bookmarks::BaseBookmarkModelObserver:
 118   void BookmarkModelChanged() override;
 119
 120  private:
 121   // BookmarkMenuController deletes itself as necessary.
 122   ~BookmarkMenuController() override;
 123
 124   scoped_ptr<views::MenuRunner> menu_runner_;
 125
 126   scoped_ptr<BookmarkMenuDelegate> menu_delegate_;
 127
 128   // The node we're showing the contents of.
 129   const bookmarks::BookmarkNode* node_;
 130
 131   // Data for the drop.
 132   bookmarks::BookmarkNodeData drop_data_;
 133
 134   // The observer, may be null.
 135   BookmarkMenuControllerObserver* observer_;
 136
 137   // Is the menu being shown for a drop?
 138   bool for_drop_;
 139
 140   // The bookmark bar. This is only non-null if we're showing a menu item for a
 141   // folder on the bookmark bar and not for drop, or if the BookmarkBarView has
 142   // been destroyed before the menu.
 143   BookmarkBarView* bookmark_bar_;
 144
 145   DISALLOW_COPY_AND_ASSIGN(BookmarkMenuController);
 146 };
 147
 148 #endif  // CHROME_BROWSER_UI_VIEWS_BOOKMARKS_BOOKMARK_MENU_CONTROLLER_VIEWS_H_