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|    1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. |    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 |    2 // Use of this source code is governed by a BSD-style license that can be | 
|    3 // found in the LICENSE file. |    3 // found in the LICENSE file. | 
|    4  |    4  | 
|    5 #ifndef CHROME_BROWSER_GTK_MENU_GTK_H_ |    5 #ifndef CHROME_BROWSER_GTK_MENU_GTK_H_ | 
|    6 #define CHROME_BROWSER_GTK_MENU_GTK_H_ |    6 #define CHROME_BROWSER_GTK_MENU_GTK_H_ | 
|    7 #pragma once |    7 #pragma once | 
|    8  |    8  | 
|    9 #include <gtk/gtk.h> |    9 #include "chrome/browser/ui/gtk/menu_gtk.h" | 
|   10  |   10 // TODO(msw): remove this file once all includes have been updated. | 
|   11 #include <string> |  | 
|   12 #include <vector> |  | 
|   13  |  | 
|   14 #include "app/gtk_signal.h" |  | 
|   15 #include "base/task.h" |  | 
|   16 #include "gfx/point.h" |  | 
|   17  |  | 
|   18 class SkBitmap; |  | 
|   19  |  | 
|   20 namespace menus { |  | 
|   21 class ButtonMenuItemModel; |  | 
|   22 class MenuModel; |  | 
|   23 } |  | 
|   24  |  | 
|   25 class MenuGtk { |  | 
|   26  public: |  | 
|   27   // Delegate class that lets another class control the status of the menu. |  | 
|   28   class Delegate { |  | 
|   29    public: |  | 
|   30     virtual ~Delegate() { } |  | 
|   31  |  | 
|   32     // Called before a command is executed. This exists for the case where a |  | 
|   33     // model is handling the actual execution of commands, but the delegate |  | 
|   34     // still needs to know that some command got executed. This is called before |  | 
|   35     // and not after the command is executed because its execution may delete |  | 
|   36     // the menu and/or the delegate. |  | 
|   37     virtual void CommandWillBeExecuted() {} |  | 
|   38  |  | 
|   39     // Called when the menu stops showing. This will be called before |  | 
|   40     // ExecuteCommand if the user clicks an item, but will also be called when |  | 
|   41     // the user clicks away from the menu. |  | 
|   42     virtual void StoppedShowing() {} |  | 
|   43  |  | 
|   44     // Return true if we should override the "gtk-menu-images" system setting |  | 
|   45     // when showing image menu items for this menu. |  | 
|   46     virtual bool AlwaysShowIconForCmd(int command_id) const { return false; } |  | 
|   47  |  | 
|   48     // Returns a tinted image used in button in a menu. |  | 
|   49     virtual GtkIconSet* GetIconSetForId(int idr) { return NULL; } |  | 
|   50  |  | 
|   51     // Returns an icon for the menu item, if available. |  | 
|   52     virtual GtkWidget* GetImageForCommandId(int command_id) const; |  | 
|   53  |  | 
|   54     static GtkWidget* GetDefaultImageForCommandId(int command_id); |  | 
|   55   }; |  | 
|   56  |  | 
|   57   MenuGtk(MenuGtk::Delegate* delegate, menus::MenuModel* model); |  | 
|   58   ~MenuGtk(); |  | 
|   59  |  | 
|   60   // Initialize GTK signal handlers. |  | 
|   61   void ConnectSignalHandlers(); |  | 
|   62  |  | 
|   63   // These methods are used to build the menu dynamically. The return value |  | 
|   64   // is the new menu item. |  | 
|   65   GtkWidget* AppendMenuItemWithLabel(int command_id, const std::string& label); |  | 
|   66   GtkWidget* AppendMenuItemWithIcon(int command_id, const std::string& label, |  | 
|   67                                     const SkBitmap& icon); |  | 
|   68   GtkWidget* AppendCheckMenuItemWithLabel(int command_id, |  | 
|   69                                           const std::string& label); |  | 
|   70   GtkWidget* AppendSeparator(); |  | 
|   71   GtkWidget* AppendMenuItem(int command_id, GtkWidget* menu_item); |  | 
|   72   GtkWidget* AppendMenuItemToMenu(int index, |  | 
|   73                                   menus::MenuModel* model, |  | 
|   74                                   GtkWidget* menu_item, |  | 
|   75                                   GtkWidget* menu, |  | 
|   76                                   bool connect_to_activate); |  | 
|   77  |  | 
|   78   // Displays the menu. |timestamp| is the time of activation. The popup is |  | 
|   79   // statically positioned at |widget|. |  | 
|   80   void Popup(GtkWidget* widget, gint button_type, guint32 timestamp); |  | 
|   81  |  | 
|   82   // Displays the menu using the button type and timestamp of |event|. The popup |  | 
|   83   // is statically positioned at |widget|. |  | 
|   84   void Popup(GtkWidget* widget, GdkEvent* event); |  | 
|   85  |  | 
|   86   // Displays the menu as a context menu, i.e. at the current cursor location. |  | 
|   87   // |event_time| is the time of the event that triggered the menu's display. |  | 
|   88   void PopupAsContext(guint32 event_time); |  | 
|   89  |  | 
|   90   // Displays the menu at the given coords. |point| is intentionally not const. |  | 
|   91   void PopupAsContextAt(guint32 event_time, gfx::Point point); |  | 
|   92  |  | 
|   93   // Displays the menu as a context menu for the passed status icon. |  | 
|   94   void PopupAsContextForStatusIcon(guint32 event_time, guint32 button, |  | 
|   95                                    GtkStatusIcon* icon); |  | 
|   96  |  | 
|   97   // Displays the menu following a keyboard event (such as selecting |widget| |  | 
|   98   // and pressing "enter"). |  | 
|   99   void PopupAsFromKeyEvent(GtkWidget* widget); |  | 
|  100  |  | 
|  101   // Closes the menu. |  | 
|  102   void Cancel(); |  | 
|  103  |  | 
|  104   // Repositions the menu to be right under the button.  Alignment is set as |  | 
|  105   // object data on |void_widget| with the tag "left_align".  If "left_align" |  | 
|  106   // is true, it aligns the left side of the menu with the left side of the |  | 
|  107   // button. Otherwise it aligns the right side of the menu with the right side |  | 
|  108   // of the button. Public since some menus have odd requirements that don't |  | 
|  109   // belong in a public class. |  | 
|  110   static void WidgetMenuPositionFunc(GtkMenu* menu, |  | 
|  111                                      int* x, |  | 
|  112                                      int* y, |  | 
|  113                                      gboolean* push_in, |  | 
|  114                                      void* void_widget); |  | 
|  115  |  | 
|  116   // Positions the menu to appear at the gfx::Point represented by |userdata|. |  | 
|  117   static void PointMenuPositionFunc(GtkMenu* menu, |  | 
|  118                                     int* x, |  | 
|  119                                     int* y, |  | 
|  120                                     gboolean* push_in, |  | 
|  121                                     gpointer userdata); |  | 
|  122  |  | 
|  123   GtkWidget* widget() const { return menu_; } |  | 
|  124  |  | 
|  125   // Updates all the enabled/checked states and the dynamic labels. |  | 
|  126   void UpdateMenu(); |  | 
|  127  |  | 
|  128  private: |  | 
|  129   // Builds a GtkImageMenuItem. |  | 
|  130   GtkWidget* BuildMenuItemWithImage(const std::string& label, |  | 
|  131                                     const SkBitmap& icon); |  | 
|  132  |  | 
|  133   GtkWidget* BuildMenuItemWithImage(const std::string& label, |  | 
|  134                                     GtkWidget* image); |  | 
|  135  |  | 
|  136   GtkWidget* BuildMenuItemWithLabel(const std::string& label, |  | 
|  137                                     int command_id); |  | 
|  138  |  | 
|  139   // A function that creates a GtkMenu from |model_|. |  | 
|  140   void BuildMenuFromModel(); |  | 
|  141   // Implementation of the above; called recursively. |  | 
|  142   void BuildSubmenuFromModel(menus::MenuModel* model, GtkWidget* menu); |  | 
|  143   // Builds a menu item with buttons in it from the data in the model. |  | 
|  144   GtkWidget* BuildButtomMenuItem(menus::ButtonMenuItemModel* model, |  | 
|  145                                  GtkWidget* menu); |  | 
|  146  |  | 
|  147   void ExecuteCommand(menus::MenuModel* model, int id); |  | 
|  148  |  | 
|  149   // Callback for when a menu item is clicked. |  | 
|  150   CHROMEGTK_CALLBACK_0(MenuGtk, void, OnMenuItemActivated); |  | 
|  151  |  | 
|  152   // Called when one of the buttons are pressed. |  | 
|  153   CHROMEGTK_CALLBACK_1(MenuGtk, void, OnMenuButtonPressed, int); |  | 
|  154  |  | 
|  155   // Called to maybe activate a button if that button isn't supposed to dismiss |  | 
|  156   // the menu. |  | 
|  157   CHROMEGTK_CALLBACK_1(MenuGtk, gboolean, OnMenuTryButtonPressed, int); |  | 
|  158  |  | 
|  159   // Updates all the menu items' state. |  | 
|  160   CHROMEGTK_CALLBACK_0(MenuGtk, void, OnMenuShow); |  | 
|  161  |  | 
|  162   // Sets the activating widget back to a normal appearance. |  | 
|  163   CHROMEGTK_CALLBACK_0(MenuGtk, void, OnMenuHidden); |  | 
|  164  |  | 
|  165   // Sets the enable/disabled state and dynamic labels on our menu items. |  | 
|  166   static void SetButtonItemInfo(GtkWidget* button, gpointer userdata); |  | 
|  167  |  | 
|  168   // Sets the check mark, enabled/disabled state and dynamic labels on our menu |  | 
|  169   // items. |  | 
|  170   static void SetMenuItemInfo(GtkWidget* widget, void* raw_menu); |  | 
|  171  |  | 
|  172   // Queries this object about the menu state. |  | 
|  173   MenuGtk::Delegate* delegate_; |  | 
|  174  |  | 
|  175   // If non-NULL, the MenuModel that we use to populate and control the GTK |  | 
|  176   // menu (overriding the delegate as a controller). |  | 
|  177   menus::MenuModel* model_; |  | 
|  178  |  | 
|  179   // For some menu items, we want to show the accelerator, but not actually |  | 
|  180   // explicitly handle it. To this end we connect those menu items' accelerators |  | 
|  181   // to this group, but don't attach this group to any top level window. |  | 
|  182   GtkAccelGroup* dummy_accel_group_; |  | 
|  183  |  | 
|  184   // gtk_menu_popup() does not appear to take ownership of popup menus, so |  | 
|  185   // MenuGtk explicitly manages the lifetime of the menu. |  | 
|  186   GtkWidget* menu_; |  | 
|  187  |  | 
|  188   // True when we should ignore "activate" signals.  Used to prevent |  | 
|  189   // menu items from getting activated when we are setting up the |  | 
|  190   // menu. |  | 
|  191   static bool block_activation_; |  | 
|  192  |  | 
|  193   // We must free these at shutdown. |  | 
|  194   std::vector<MenuGtk*> submenus_we_own_; |  | 
|  195  |  | 
|  196   ScopedRunnableMethodFactory<MenuGtk> factory_; |  | 
|  197 }; |  | 
|  198  |   11  | 
|  199 #endif  // CHROME_BROWSER_GTK_MENU_GTK_H_ |   12 #endif  // CHROME_BROWSER_GTK_MENU_GTK_H_ | 
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