Delete the GTK+ port of Chrome.

chrome/browser/ui/gtk/gtk_custom_menu_item.h

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef CHROME_BROWSER_UI_GTK_GTK_CUSTOM_MENU_ITEM_H_
-#define CHROME_BROWSER_UI_GTK_GTK_CUSTOM_MENU_ITEM_H_
-
-// GtkCustomMenuItem is a GtkMenuItem subclass that has buttons in it and acts
-// to support this. GtkCustomMenuItems only render properly when put in a
-// GtkCustomMenu; there's a lot of collaboration between these two classes
-// necessary to work around how gtk normally does menus.
-//
-// We can't rely on the normal event infrastructure. While a menu is up, the
-// GtkMenu has a grab on all events. Instead of trying to pump events through
-// the normal channels, we have the GtkCustomMenu selectively forward mouse
-// motion through a back channel. The GtkCustomMenu only listens for button
-// press information so it can block the effects of the click if the cursor
-// isn't in a button in the menu item.
-//
-// A GtkCustomMenuItem doesn't try to take these signals and forward them to
-// the buttons it owns. The GtkCustomMenu class keeps track of which button is
-// selected (due to key events and mouse movement) and otherwise acts like a
-// normal GtkItem. The buttons are only for sizing and rendering; they don't
-// respond to events. Instead, when the GtkCustomMenuItem is activated by the
-// GtkMenu, it uses which button was selected as a signal of what to do.
-//
-// Users should connect to the "button-pushed" signal to be notified when a
-// button was pushed. We don't go through the normal "activate" signal because
-// we need to communicate additional information, namely which button was
-// activated.
-
-#include <gtk/gtk.h>
-
-G_BEGIN_DECLS
-
-#define GTK_TYPE_CUSTOM_MENU_ITEM                                       \
-  (gtk_custom_menu_item_get_type())
-#define GTK_CUSTOM_MENU_ITEM(obj)                                       \
-  (G_TYPE_CHECK_INSTANCE_CAST((obj), GTK_TYPE_CUSTOM_MENU_ITEM,         \
-                              GtkCustomMenuItem))
-#define GTK_CUSTOM_MENU_ITEM_CLASS(klass)                               \
-  (G_TYPE_CHECK_CLASS_CAST((klass), GTK_TYPE_CUSTOM_MENU_ITEM,          \
-                           GtkCustomMenuItemClass))
-#define GTK_IS_CUSTOM_MENU_ITEM(obj)                                    \
-  (G_TYPE_CHECK_INSTANCE_TYPE((obj), GTK_TYPE_CUSTOM_MENU_ITEM))
-#define GTK_IS_CUSTOM_MENU_ITEM_CLASS(klass)                            \
-  (G_TYPE_CHECK_CLASS_TYPE((klass), GTK_TYPE_CUSTOM_MENU_ITEM))
-#define GTK_CUSTOM_MENU_ITEM_GET_CLASS(obj)                             \
-  (G_TYPE_INSTANCE_GET_CLASS((obj), GTK_TYPE_CUSTOM_MENU_ITEM,          \
-                             GtkCustomMenuItemClass))
-
-typedef struct _GtkCustomMenuItem GtkCustomMenuItem;
-typedef struct _GtkCustomMenuItemClass GtkCustomMenuItemClass;
-
-struct _GtkCustomMenuItem {
-  GtkMenuItem menu_item;
-
-  // Container for button widgets.
-  GtkWidget* hbox;
-
-  // Label on left side of menu item.
-  GtkWidget* label;
-
-  // List of all widgets we added. Used to find the leftmost and rightmost
-  // continuous buttons.
-  GList* all_widgets;
-
-  // Possible button widgets. Used for keyboard navigation.
-  GList* button_widgets;
-
-  // The widget that currently has highlight.
-  GtkWidget* currently_selected_button;
-
-  // The widget that was selected *before* |currently_selected_button|. Why do
-  // we hang on to this? Because the menu system sends us a deselect signal
-  // right before activating us. We need to listen to deselect since that's
-  // what we receive when the mouse cursor leaves us entirely.
-  GtkWidget* previously_selected_button;
-};
-
-struct _GtkCustomMenuItemClass {
-  GtkMenuItemClass parent_class;
-};
-
-GType gtk_custom_menu_item_get_type(void) G_GNUC_CONST;
-GtkWidget* gtk_custom_menu_item_new(const char* title);
-
-// Adds a button to our list of items in the |hbox|.
-GtkWidget* gtk_custom_menu_item_add_button(GtkCustomMenuItem* menu_item,
-                                           int command_id);
-
-// Adds a button to our list of items in the |hbox|, but that isn't part of
-// |button_widgets| to prevent it from being activatable.
-GtkWidget* gtk_custom_menu_item_add_button_label(GtkCustomMenuItem* menu_item,
-                                                 int command_id);
-
-// Adds a vertical space in the |hbox|.
-void gtk_custom_menu_item_add_space(GtkCustomMenuItem* menu_item);
-
-// Receives a motion event from the GtkCustomMenu that contains us. We can't
-// just subscribe to motion-event or the individual widget enter/leave events
-// because the top level GtkMenu has an event grab.
-void gtk_custom_menu_item_receive_motion_event(GtkCustomMenuItem* menu_item,
-                                               gdouble x, gdouble y);
-
-// Notification that the menu got a cursor key event. Used to move up/down
-// within the menu buttons. Returns TRUE to stop the default signal handler
-// from running.
-gboolean gtk_custom_menu_item_handle_move(GtkCustomMenuItem* menu_item,
-                                          GtkMenuDirectionType direction);
-
-// Because we only get a generic "selected" signal when we've changed, we need
-// to have a way for the GtkCustomMenu to tell us that we were just
-// selected.
-void gtk_custom_menu_item_select_item_by_direction(
-    GtkCustomMenuItem* menu_item, GtkMenuDirectionType direction);
-
-// Whether we are currently hovering over a clickable region on the menu
-// item. Used by GtkCustomMenu to determine whether it should discard click
-// events.
-gboolean gtk_custom_menu_item_is_in_clickable_region(
-    GtkCustomMenuItem* menu_item);
-
-// If the button is released while the |currently_selected_button| isn't
-// supposed to dismiss the menu, this signals to our listeners that we want to
-// run this command if it doesn't dismiss the menu.  Returns TRUE if we acted
-// on this button click (and should prevent the normal GtkMenu machinery from
-// firing an "activate" signal).
-gboolean gtk_custom_menu_item_try_no_dismiss_command(
-    GtkCustomMenuItem* menu_item);
-
-// Calls |callback| with every button and button-label in the container.
-void gtk_custom_menu_item_foreach_button(GtkCustomMenuItem* menu_item,
-                                         GtkCallback callback,
-                                         gpointer callback_data);
-
-G_END_DECLS
-
-#endif  // CHROME_BROWSER_UI_GTK_GTK_CUSTOM_MENU_ITEM_H_