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