chrome/browser/ui/views/toolbar/wrench_menu.h

   1 // Copyright 2013 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_TOOLBAR_WRENCH_MENU_H_
   6 #define CHROME_BROWSER_UI_VIEWS_TOOLBAR_WRENCH_MENU_H_
   7
   8 #include <map>
   9 #include <utility>
  10
  11 #include "base/memory/scoped_ptr.h"
  12 #include "base/observer_list.h"
  13 #include "chrome/browser/bookmarks/base_bookmark_model_observer.h"
  14 #include "content/public/browser/notification_observer.h"
  15 #include "content/public/browser/notification_registrar.h"
  16 #include "ui/base/models/menu_model.h"
  17 #include "ui/views/controls/menu/menu_delegate.h"
  18
  19 class BookmarkMenuDelegate;
  20 class Browser;
  21 class WrenchMenuObserver;
  22
  23 namespace ui {
  24 class NativeTheme;
  25 }
  26
  27 namespace views {
  28 class MenuButton;
  29 struct MenuConfig;
  30 class MenuItemView;
  31 class MenuRunner;
  32 class View;
  33 }  // namespace views
  34
  35 // WrenchMenu adapts the WrenchMenuModel to view's menu related classes.
  36 class WrenchMenu : public views::MenuDelegate,
  37                    public BaseBookmarkModelObserver,
  38                    public content::NotificationObserver {
  39  public:
  40   // TODO: remove |use_new_menu| and |supports_new_separators|.
  41   WrenchMenu(Browser* browser,
  42              bool use_new_menu,
  43              bool supports_new_separators);
  44   virtual ~WrenchMenu();
  45
  46   void Init(ui::MenuModel* model);
  47
  48   // Shows the menu relative to the specified view.
  49   void RunMenu(views::MenuButton* host);
  50
  51   // Whether the menu is currently visible to the user.
  52   bool IsShowing();
  53
  54   const views::MenuConfig& GetMenuConfig() const;
  55
  56   bool use_new_menu() const { return use_new_menu_; }
  57
  58   void AddObserver(WrenchMenuObserver* observer);
  59   void RemoveObserver(WrenchMenuObserver* observer);
  60
  61   // MenuDelegate overrides:
  62   virtual const gfx::FontList* GetLabelFontList(int command_id) const OVERRIDE;
  63   virtual bool GetForegroundColor(int command_id,
  64                                   bool is_hovered,
  65                                   SkColor* override_color) const OVERRIDE;
  66   virtual base::string16 GetTooltipText(int command_id,
  67                                   const gfx::Point& p) const OVERRIDE;
  68   virtual bool IsTriggerableEvent(views::MenuItemView* menu,
  69                                   const ui::Event& e) OVERRIDE;
  70   virtual bool GetDropFormats(
  71       views::MenuItemView* menu,
  72       int* formats,
  73       std::set<ui::OSExchangeData::CustomFormat>* custom_formats) OVERRIDE;
  74   virtual bool AreDropTypesRequired(views::MenuItemView* menu) OVERRIDE;
  75   virtual bool CanDrop(views::MenuItemView* menu,
  76                        const ui::OSExchangeData& data) OVERRIDE;
  77   virtual int GetDropOperation(views::MenuItemView* item,
  78                                const ui::DropTargetEvent& event,
  79                                DropPosition* position) OVERRIDE;
  80   virtual int OnPerformDrop(views::MenuItemView* menu,
  81                             DropPosition position,
  82                             const ui::DropTargetEvent& event) OVERRIDE;
  83   virtual bool ShowContextMenu(views::MenuItemView* source,
  84                                int command_id,
  85                                const gfx::Point& p,
  86                                ui::MenuSourceType source_type) OVERRIDE;
  87   virtual bool CanDrag(views::MenuItemView* menu) OVERRIDE;
  88   virtual void WriteDragData(views::MenuItemView* sender,
  89                              ui::OSExchangeData* data) OVERRIDE;
  90   virtual int GetDragOperations(views::MenuItemView* sender) OVERRIDE;
  91   virtual int GetMaxWidthForMenu(views::MenuItemView* menu) OVERRIDE;
  92   virtual bool IsItemChecked(int command_id) const OVERRIDE;
  93   virtual bool IsCommandEnabled(int command_id) const OVERRIDE;
  94   virtual void ExecuteCommand(int command_id, int mouse_event_flags) OVERRIDE;
  95   virtual bool GetAccelerator(int command_id,
  96                               ui::Accelerator* accelerator) OVERRIDE;
  97   virtual void WillShowMenu(views::MenuItemView* menu) OVERRIDE;
  98   virtual void WillHideMenu(views::MenuItemView* menu) OVERRIDE;
  99
 100   // BaseBookmarkModelObserver overrides:
 101   virtual void BookmarkModelChanged() OVERRIDE;
 102
 103   // content::NotificationObserver overrides:
 104   virtual void Observe(int type,
 105                        const content::NotificationSource& source,
 106                        const content::NotificationDetails& details) OVERRIDE;
 107
 108  private:
 109   class CutCopyPasteView;
 110   class RecentTabsMenuModelDelegate;
 111   class ZoomView;
 112
 113   typedef std::pair<ui::MenuModel*,int> Entry;
 114   typedef std::map<int,Entry> CommandIDToEntry;
 115
 116   const ui::NativeTheme* GetNativeTheme() const;
 117
 118   // Populates |parent| with all the child menus in |model|. Recursively invokes
 119   // |PopulateMenu| for any submenu.
 120   void PopulateMenu(views::MenuItemView* parent,
 121                     ui::MenuModel* model);
 122
 123   // Adds a new menu item to |parent| at |menu_index| to represent the item in
 124   // |model| at |model_index|:
 125   // - |menu_index|: position in |parent| to add the new item.
 126   // - |model_index|: position in |model| to retrieve information about the
 127   //   new menu item.
 128   // - |height|: For button containing menu items, a |height| override can be
 129   //   specified with a number bigger then 0.
 130   // The returned item's MenuItemView::GetCommand() is the same as that of
 131   // |model|->GetCommandIdAt(|model_index|).
 132   views::MenuItemView* AddMenuItem(views::MenuItemView* parent,
 133                                    int menu_index,
 134                                    ui::MenuModel* model,
 135                                    int model_index,
 136                                    ui::MenuModel::ItemType menu_type,
 137                                    int height);
 138
 139   // Invoked from the cut/copy/paste menus. Cancels the current active menu and
 140   // activates the menu item in |model| at |index|.
 141   void CancelAndEvaluate(ui::MenuModel* model, int index);
 142
 143   // Creates the bookmark menu if necessary. Does nothing if already created or
 144   // the bookmark model isn't loaded.
 145   void CreateBookmarkMenu();
 146
 147   // Returns the index of the MenuModel/index pair representing the |command_id|
 148   // in |command_id_to_entry_|.
 149   int ModelIndexFromCommandId(int command_id) const;
 150
 151   // The views menu. Owned by |menu_runner_|.
 152   views::MenuItemView* root_;
 153
 154   scoped_ptr<views::MenuRunner> menu_runner_;
 155
 156   // Maps from the command ID in model to the model/index pair the item came
 157   // from.
 158   CommandIDToEntry command_id_to_entry_;
 159
 160   // Browser the menu is being shown for.
 161   Browser* browser_;
 162
 163   // |CancelAndEvaluate| sets |selected_menu_model_| and |selected_index_|.
 164   // If |selected_menu_model_| is non-null after the menu completes
 165   // ActivatedAt is invoked. This is done so that ActivatedAt isn't invoked
 166   // while the message loop is nested.
 167   ui::MenuModel* selected_menu_model_;
 168   int selected_index_;
 169
 170   // Used for managing the bookmark menu items.
 171   scoped_ptr<BookmarkMenuDelegate> bookmark_menu_delegate_;
 172
 173   // Menu corresponding to IDC_BOOKMARKS_MENU.
 174   views::MenuItemView* bookmark_menu_;
 175
 176   // Menu corresponding to IDC_FEEDBACK.
 177   views::MenuItemView* feedback_menu_item_;
 178
 179   // Used for managing "Recent tabs" menu items.
 180   scoped_ptr<RecentTabsMenuModelDelegate> recent_tabs_menu_model_delegate_;
 181
 182   content::NotificationRegistrar registrar_;
 183
 184   const bool use_new_menu_;
 185
 186   const bool supports_new_separators_;
 187
 188   ObserverList<WrenchMenuObserver> observer_list_;
 189
 190   DISALLOW_COPY_AND_ASSIGN(WrenchMenu);
 191 };
 192
 193 #endif  // CHROME_BROWSER_UI_VIEWS_TOOLBAR_WRENCH_MENU_H_