/* GTK - The GIMP Toolkit

 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Jsh MacDonald

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the

 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

 * Boston, MA 02111-1307, USA.

 */

/*

 * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS

 * file for a list of people on the GTK+ Team.  See the ChangeLog

 * files for a list of changes.  These files are distributed with

 * GTK+ at ftp://ftp.gtk.org/pub/gtk/. 

 */

#include "config.h"

#include "gdk/gdkkeysyms.h"

#undef GTK_DISABLE_DEPRECATED

#include "gtkmenu.h"

#include "gtkmenuitem.h"

#include "gtkmarshalers.h"

#include "gtkoptionmenu.h"

#include "gtkprivate.h"

#include "gtkintl.h"

#include "gtkalias.h"

#define CHILD_LEFT_SPACING        4

#define CHILD_RIGHT_SPACING       1

#define CHILD_TOP_SPACING         1

#define CHILD_BOTTOM_SPACING      1

typedef struct _GtkOptionMenuProps GtkOptionMenuProps;

struct _GtkOptionMenuProps

{

  gboolean interior_focus;

  GtkRequisition indicator_size;

  GtkBorder indicator_spacing;

  gint focus_width;

  gint focus_pad;

};

static const GtkOptionMenuProps default_props = {

  TRUE,

  { 7, 13 },

  { 7, 5, 2, 2 },		/* Left, right, top, bottom */

  1,

  0

};

static void gtk_option_menu_destroy         (GtkObject          *object);

static void gtk_option_menu_set_property    (GObject            *object,

					     guint               prop_id,

					     const GValue       *value,

					     GParamSpec         *pspec);

static void gtk_option_menu_get_property    (GObject            *object,

					     guint               prop_id,

					     GValue             *value,

					     GParamSpec         *pspec);

static void gtk_option_menu_size_request    (GtkWidget          *widget,

					     GtkRequisition     *requisition);

static void gtk_option_menu_size_allocate   (GtkWidget          *widget,

					     GtkAllocation      *allocation);

static void gtk_option_menu_paint           (GtkWidget          *widget,

					     GdkRectangle       *area);

static gint gtk_option_menu_expose          (GtkWidget          *widget,

					     GdkEventExpose     *event);

static gint gtk_option_menu_button_press    (GtkWidget          *widget,

					     GdkEventButton     *event);

static gint gtk_option_menu_key_press	    (GtkWidget          *widget,

					     GdkEventKey        *event);

static void gtk_option_menu_selection_done  (GtkMenuShell       *menu_shell,

					     GtkOptionMenu      *option_menu);

static void gtk_option_menu_update_contents (GtkOptionMenu      *option_menu);

static void gtk_option_menu_remove_contents (GtkOptionMenu      *option_menu);

static void gtk_option_menu_calc_size       (GtkOptionMenu      *option_menu);

static void gtk_option_menu_position        (GtkMenu            *menu,

					     gint               *x,

					     gint               *y,

					     gint               *scroll_offet,

					     gpointer            user_data);

static void gtk_option_menu_show_all        (GtkWidget          *widget);

static void gtk_option_menu_hide_all        (GtkWidget          *widget);

static gboolean gtk_option_menu_mnemonic_activate (GtkWidget    *widget,

						   gboolean      group_cycling);

static GType gtk_option_menu_child_type   (GtkContainer       *container);

static gint gtk_option_menu_scroll_event    (GtkWidget          *widget,

					     GdkEventScroll     *event);

enum

{

  CHANGED,

  LAST_SIGNAL

};

enum

{

  PROP_0,

  PROP_MENU

};

static guint signals[LAST_SIGNAL] = { 0 };

G_DEFINE_TYPE (GtkOptionMenu, gtk_option_menu, GTK_TYPE_BUTTON)

static void

gtk_option_menu_class_init (GtkOptionMenuClass *class)

{

  GObjectClass *gobject_class;

  GtkObjectClass *object_class;

  GtkWidgetClass *widget_class;

  GtkContainerClass *container_class;

  gobject_class = (GObjectClass*) class;

  object_class = (GtkObjectClass*) class;

  widget_class = (GtkWidgetClass*) class;

  container_class = (GtkContainerClass*) class;

  signals[CHANGED] =

    g_signal_new (I_("changed"),

                  G_OBJECT_CLASS_TYPE (class),

                  G_SIGNAL_RUN_LAST,

                  G_STRUCT_OFFSET (GtkOptionMenuClass, changed),

                  NULL, NULL,

                  _gtk_marshal_VOID__VOID,

                  G_TYPE_NONE, 0);

  gobject_class->set_property = gtk_option_menu_set_property;

  gobject_class->get_property = gtk_option_menu_get_property;

  object_class->destroy = gtk_option_menu_destroy;

  widget_class->size_request = gtk_option_menu_size_request;

  widget_class->size_allocate = gtk_option_menu_size_allocate;

  widget_class->expose_event = gtk_option_menu_expose;

  widget_class->button_press_event = gtk_option_menu_button_press;

  widget_class->key_press_event = gtk_option_menu_key_press;

  widget_class->scroll_event = gtk_option_menu_scroll_event;

  widget_class->show_all = gtk_option_menu_show_all;

  widget_class->hide_all = gtk_option_menu_hide_all;

  widget_class->mnemonic_activate = gtk_option_menu_mnemonic_activate;

  container_class->child_type = gtk_option_menu_child_type;

  g_object_class_install_property (gobject_class,

                                   PROP_MENU,

                                   g_param_spec_object ("menu",

                                                        P_("Menu"),

                                                        P_("The menu of options"),

                                                        GTK_TYPE_MENU,

                                                        GTK_PARAM_READWRITE));

  gtk_widget_class_install_style_property (widget_class,

					   g_param_spec_boxed ("indicator-size",

							       P_("Indicator Size"),

							       P_("Size of dropdown indicator"),

							       GTK_TYPE_REQUISITION,

							       GTK_PARAM_READABLE));

  gtk_widget_class_install_style_property (widget_class,

					   g_param_spec_boxed ("indicator-spacing",

							       P_("Indicator Spacing"),

							       P_("Spacing around indicator"),

							       GTK_TYPE_BORDER,

							       GTK_PARAM_READABLE));

}

static GType

gtk_option_menu_child_type (GtkContainer       *container)

{

  return G_TYPE_NONE;

}

static void

gtk_option_menu_init (GtkOptionMenu *option_menu)

{

  GtkWidget *widget = GTK_WIDGET (option_menu);

  gtk_widget_set_can_focus (widget, TRUE);

  gtk_widget_set_can_default (widget, FALSE);

  gtk_widget_set_receives_default (widget, FALSE);

  option_menu->menu = NULL;

  option_menu->menu_item = NULL;

  option_menu->width = 0;

  option_menu->height = 0;

}

GtkWidget*

gtk_option_menu_new (void)

{

  return g_object_new (GTK_TYPE_OPTION_MENU, NULL);

}

GtkWidget*

gtk_option_menu_get_menu (GtkOptionMenu *option_menu)

{

  g_return_val_if_fail (GTK_IS_OPTION_MENU (option_menu), NULL);

  return option_menu->menu;

}

static void

gtk_option_menu_detacher (GtkWidget     *widget,

			  GtkMenu	*menu)

{

  GtkOptionMenu *option_menu;

  g_return_if_fail (GTK_IS_OPTION_MENU (widget));

  option_menu = GTK_OPTION_MENU (widget);

  g_return_if_fail (option_menu->menu == (GtkWidget*) menu);

  gtk_option_menu_remove_contents (option_menu);

  g_signal_handlers_disconnect_by_func (option_menu->menu,

					gtk_option_menu_selection_done,

					option_menu);

  g_signal_handlers_disconnect_by_func (option_menu->menu,

					gtk_option_menu_calc_size,

					option_menu);

  option_menu->menu = NULL;

  g_object_notify (G_OBJECT (option_menu), "menu");

}

void

gtk_option_menu_set_menu (GtkOptionMenu *option_menu,

			  GtkWidget     *menu)

{

  g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));

  g_return_if_fail (GTK_IS_MENU (menu));

  if (option_menu->menu != menu)

    {

      gtk_option_menu_remove_menu (option_menu);

      option_menu->menu = menu;

      gtk_menu_attach_to_widget (GTK_MENU (menu),

				 GTK_WIDGET (option_menu),

				 gtk_option_menu_detacher);

      gtk_option_menu_calc_size (option_menu);

      g_signal_connect_after (option_menu->menu, "selection-done",

			      G_CALLBACK (gtk_option_menu_selection_done),

			      option_menu);

      g_signal_connect_swapped (option_menu->menu, "size-request",

				G_CALLBACK (gtk_option_menu_calc_size),

				option_menu);

      if (GTK_WIDGET (option_menu)->parent)

	gtk_widget_queue_resize (GTK_WIDGET (option_menu));

      gtk_option_menu_update_contents (option_menu);

      g_object_notify (G_OBJECT (option_menu), "menu");

    }

}

void

gtk_option_menu_remove_menu (GtkOptionMenu *option_menu)

{

  g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));

  if (option_menu->menu)

    {

      if (GTK_MENU_SHELL (option_menu->menu)->active)

	gtk_menu_shell_cancel (GTK_MENU_SHELL (option_menu->menu));

      gtk_menu_detach (GTK_MENU (option_menu->menu));

    }

}

void

gtk_option_menu_set_history (GtkOptionMenu *option_menu,

			     guint          index)

{

  GtkWidget *menu_item;

  g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));

  if (option_menu->menu)

    {

      gtk_menu_set_active (GTK_MENU (option_menu->menu), index);

      menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));

      if (menu_item != option_menu->menu_item)

        gtk_option_menu_update_contents (option_menu);

    }

}

/**

 * gtk_option_menu_get_history:

 * @option_menu: a #GtkOptionMenu

 * 

 * Retrieves the index of the currently selected menu item. The menu

 * items are numbered from top to bottom, starting with 0. 

 * 

 * Return value: index of the selected menu item, or -1 if there are no menu items

 * Deprecated: 2.4: Use #GtkComboBox instead.

 **/

gint

gtk_option_menu_get_history (GtkOptionMenu *option_menu)

{

  GtkWidget *active_widget;

  g_return_val_if_fail (GTK_IS_OPTION_MENU (option_menu), -1);

  if (option_menu->menu)

    {

      active_widget = gtk_menu_get_active (GTK_MENU (option_menu->menu));

      if (active_widget)

	return g_list_index (GTK_MENU_SHELL (option_menu->menu)->children,

                             active_widget);

      else

	return -1;

    }

  else

    return -1;

}

static void

gtk_option_menu_set_property (GObject            *object,

			      guint               prop_id,

			      const GValue       *value,

			      GParamSpec         *pspec)

{

  GtkOptionMenu *option_menu = GTK_OPTION_MENU (object);

  switch (prop_id)

    {

    case PROP_MENU:

      gtk_option_menu_set_menu (option_menu, g_value_get_object (value));

      break;

    default:

      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);

      break;

    }

}

static void

gtk_option_menu_get_property (GObject            *object,

			      guint               prop_id,

			      GValue             *value,

			      GParamSpec         *pspec)

{

  GtkOptionMenu *option_menu = GTK_OPTION_MENU (object);

  switch (prop_id)

    {

    case PROP_MENU:

      g_value_set_object (value, option_menu->menu);

      break;

    default:

      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);

      break;

    }

}

static void

gtk_option_menu_destroy (GtkObject *object)

{

  GtkOptionMenu *option_menu = GTK_OPTION_MENU (object);

  if (option_menu->menu)

    gtk_widget_destroy (option_menu->menu);

  GTK_OBJECT_CLASS (gtk_option_menu_parent_class)->destroy (object);

}

static void

gtk_option_menu_get_props (GtkOptionMenu       *option_menu,

			   GtkOptionMenuProps  *props)

{

  GtkRequisition *indicator_size;

  GtkBorder *indicator_spacing;

  gtk_widget_style_get (GTK_WIDGET (option_menu),

			"indicator-size", &indicator_size,

			"indicator-spacing", &indicator_spacing,

			"interior-focus", &props->interior_focus,

			"focus-line-width", &props->focus_width,

			"focus-padding", &props->focus_pad,

			NULL);

  if (indicator_size)

    props->indicator_size = *indicator_size;

  else

    props->indicator_size = default_props.indicator_size;

  if (indicator_spacing)

    props->indicator_spacing = *indicator_spacing;

  else

    props->indicator_spacing = default_props.indicator_spacing;

  gtk_requisition_free (indicator_size);

  gtk_border_free (indicator_spacing);

}

static void

gtk_option_menu_size_request (GtkWidget      *widget,

			      GtkRequisition *requisition)

{

  GtkOptionMenu *option_menu = GTK_OPTION_MENU (widget);

  GtkOptionMenuProps props;

  gint tmp;

  GtkRequisition child_requisition = { 0, 0 };

  gtk_option_menu_get_props (option_menu, &props;;

  if (GTK_BIN (option_menu)->child && gtk_widget_get_visible (GTK_BIN (option_menu)->child))

    {

      gtk_widget_size_request (GTK_BIN (option_menu)->child, &child_requisition);

      requisition->width += child_requisition.width;

      requisition->height += child_requisition.height;

    }

  requisition->width = ((GTK_CONTAINER (widget)->border_width +

			 GTK_WIDGET (widget)->style->xthickness + props.focus_pad) * 2 +

			MAX (child_requisition.width, option_menu->width) +

 			props.indicator_size.width +

 			props.indicator_spacing.left + props.indicator_spacing.right +

			CHILD_LEFT_SPACING + CHILD_RIGHT_SPACING + props.focus_width * 2);

  requisition->height = ((GTK_CONTAINER (widget)->border_width +

			  GTK_WIDGET (widget)->style->ythickness + props.focus_pad) * 2 +

			 MAX (child_requisition.height, option_menu->height) +

			 CHILD_TOP_SPACING + CHILD_BOTTOM_SPACING + props.focus_width * 2);

  tmp = (requisition->height - MAX (child_requisition.height, option_menu->height) +

	 props.indicator_size.height + props.indicator_spacing.top + props.indicator_spacing.bottom);

  requisition->height = MAX (requisition->height, tmp);

}

static void

gtk_option_menu_size_allocate (GtkWidget     *widget,

			       GtkAllocation *allocation)

{

  GtkWidget *child;

  GtkButton *button = GTK_BUTTON (widget);

  GtkAllocation child_allocation;

  GtkOptionMenuProps props;

  gint border_width;

  gtk_option_menu_get_props (GTK_OPTION_MENU (widget), &props;;

  border_width = GTK_CONTAINER (widget)->border_width;

  widget->allocation = *allocation;

  if (gtk_widget_get_realized (widget))

    gdk_window_move_resize (button->event_window,

			    allocation->x + border_width, allocation->y + border_width,

			    allocation->width - border_width * 2, allocation->height - border_width * 2);

  child = GTK_BIN (widget)->child;

  if (child && gtk_widget_get_visible (child))

    {

      gint xthickness = GTK_WIDGET (widget)->style->xthickness;

      gint ythickness = GTK_WIDGET (widget)->style->ythickness;

      child_allocation.x = widget->allocation.x + border_width + xthickness + props.focus_width + props.focus_pad + CHILD_LEFT_SPACING;

      child_allocation.y = widget->allocation.y + border_width + ythickness + props.focus_width + props.focus_pad + CHILD_TOP_SPACING;

      child_allocation.width = MAX (1, allocation->width - (border_width + xthickness + props.focus_width + props.focus_pad) * 2 -

				    props.indicator_size.width - props.indicator_spacing.left - props.indicator_spacing.right -

				    CHILD_LEFT_SPACING - CHILD_RIGHT_SPACING);

      child_allocation.height = MAX (1, allocation->height - (border_width + ythickness + props.focus_width + props.focus_pad) * 2 -

				     CHILD_TOP_SPACING - CHILD_BOTTOM_SPACING);

      if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL) 

	child_allocation.x += props.indicator_size.width + props.indicator_spacing.left + props.indicator_spacing.right;

      gtk_widget_size_allocate (child, &child_allocation);

    }

}

static void

gtk_option_menu_paint (GtkWidget    *widget,

		       GdkRectangle *area)

{

  GdkRectangle button_area;

  GtkOptionMenuProps props;

  gint border_width;

  gint tab_x;

  g_return_if_fail (GTK_IS_OPTION_MENU (widget));

  g_return_if_fail (area != NULL);

  if (GTK_WIDGET_DRAWABLE (widget))

    {

      border_width = GTK_CONTAINER (widget)->border_width;

      gtk_option_menu_get_props (GTK_OPTION_MENU (widget), &props;;

      button_area.x = widget->allocation.x + border_width;

      button_area.y = widget->allocation.y + border_width;

      button_area.width = widget->allocation.width - 2 * border_width;

      button_area.height = widget->allocation.height - 2 * border_width;

      if (!props.interior_focus && gtk_widget_has_focus (widget))

	{

	  button_area.x += props.focus_width + props.focus_pad;

	  button_area.y += props.focus_width + props.focus_pad;

	  button_area.width -= 2 * (props.focus_width + props.focus_pad);

	  button_area.height -= 2 * (props.focus_width + props.focus_pad);

	}

      gtk_paint_box (widget->style, widget->window,

		     gtk_widget_get_state (widget), GTK_SHADOW_OUT,

		     area, widget, "optionmenu",

		     button_area.x, button_area.y,

		     button_area.width, button_area.height);

      if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL) 

	tab_x = button_area.x + props.indicator_spacing.right + 

	  widget->style->xthickness;

      else

	tab_x = button_area.x + button_area.width - 

	  props.indicator_size.width - props.indicator_spacing.right -

	  widget->style->xthickness;

      gtk_paint_tab (widget->style, widget->window,

		     gtk_widget_get_state (widget), GTK_SHADOW_OUT,

		     area, widget, "optionmenutab",

		     tab_x,

		     button_area.y + (button_area.height - props.indicator_size.height) / 2,

		     props.indicator_size.width, props.indicator_size.height);

      if (gtk_widget_has_focus (widget))

	{

	  if (props.interior_focus)

	    {

	      button_area.x += widget->style->xthickness + props.focus_pad;

	      button_area.y += widget->style->ythickness + props.focus_pad;

	      button_area.width -= 2 * (widget->style->xthickness + props.focus_pad) +

		      props.indicator_spacing.left +

		      props.indicator_spacing.right +

		      props.indicator_size.width;

	      button_area.height -= 2 * (widget->style->ythickness + props.focus_pad);

	      if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL) 

		button_area.x += props.indicator_spacing.left +

		  props.indicator_spacing.right +

		  props.indicator_size.width;

	    }

	  else

	    {

	      button_area.x -= props.focus_width + props.focus_pad;

	      button_area.y -= props.focus_width + props.focus_pad;

	      button_area.width += 2 * (props.focus_width + props.focus_pad);

	      button_area.height += 2 * (props.focus_width + props.focus_pad);

	    }

	  gtk_paint_focus (widget->style, widget->window, gtk_widget_get_state (widget),

			   area, widget, "button",

			   button_area.x, 

			   button_area.y, 

			   button_area.width,

			   button_area.height);

	}

    }

}

static gint

gtk_option_menu_expose (GtkWidget      *widget,

			GdkEventExpose *event)

{

  g_return_val_if_fail (GTK_IS_OPTION_MENU (widget), FALSE);

  g_return_val_if_fail (event != NULL, FALSE);

  if (GTK_WIDGET_DRAWABLE (widget))

    {

      gtk_option_menu_paint (widget, &event->area);

      /* The following code tries to draw the child in two places at

       * once. It fails miserably for several reasons

       *

       * - If the child is not no-window, removing generates

       *   more expose events. Bad, bad, bad.

       * 

       * - Even if the child is no-window, removing it now (properly)

       *   clears the space where it was, so it does no good

       */

#if 0

      remove_child = FALSE;

      child = GTK_BUTTON (widget)->child;

      if (!child)

	{

	  if (!GTK_OPTION_MENU (widget)->menu)

	    return FALSE;

	  gtk_option_menu_update_contents (GTK_OPTION_MENU (widget));

	  child = GTK_BUTTON (widget)->child;

	  if (!child)

	    return FALSE;

	  remove_child = TRUE;

	}

      child_event = *event;

      if (!gtk_widget_get_has_window (child) &&

	  gtk_widget_intersect (child, &event->area, &child_event.area))

	gtk_widget_event (child, (GdkEvent*) &child_event);

      if (remove_child)

	gtk_option_menu_remove_contents (GTK_OPTION_MENU (widget));

#else

      if (GTK_BIN (widget)->child)

	gtk_container_propagate_expose (GTK_CONTAINER (widget),

					GTK_BIN (widget)->child,

					event);

#endif /* 0 */

    }

  return FALSE;

}

static gint

gtk_option_menu_button_press (GtkWidget      *widget,

			      GdkEventButton *event)

{

  GtkOptionMenu *option_menu;

  GtkWidget *menu_item;

  g_return_val_if_fail (GTK_IS_OPTION_MENU (widget), FALSE);

  g_return_val_if_fail (event != NULL, FALSE);

  option_menu = GTK_OPTION_MENU (widget);

  if ((event->type == GDK_BUTTON_PRESS) &&

      (event->button == 1))

    {

      gtk_option_menu_remove_contents (option_menu);

      gtk_menu_popup (GTK_MENU (option_menu->menu), NULL, NULL,

		      gtk_option_menu_position, option_menu,

		      event->button, event->time);

      menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));

      if (menu_item)

	gtk_menu_shell_select_item (GTK_MENU_SHELL (option_menu->menu), menu_item);

      return TRUE;

    }

  return FALSE;

}

static gint

gtk_option_menu_key_press (GtkWidget   *widget,

			   GdkEventKey *event)

{

  GtkOptionMenu *option_menu;

  GtkWidget *menu_item;

  g_return_val_if_fail (GTK_IS_OPTION_MENU (widget), FALSE);

  g_return_val_if_fail (event != NULL, FALSE);

  option_menu = GTK_OPTION_MENU (widget);

  switch (event->keyval)

    {

    case GDK_KP_Space:

    case GDK_space:

      gtk_option_menu_remove_contents (option_menu);

      gtk_menu_popup (GTK_MENU (option_menu->menu), NULL, NULL,

		      gtk_option_menu_position, option_menu,

		      0, event->time);

      menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));

      if (menu_item)

	gtk_menu_shell_select_item (GTK_MENU_SHELL (option_menu->menu), menu_item);

      return TRUE;

    }

  return FALSE;

}

static void

gtk_option_menu_selection_done (GtkMenuShell  *menu_shell,

				GtkOptionMenu *option_menu)

{

  g_return_if_fail (menu_shell != NULL);

  g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));

  gtk_option_menu_update_contents (option_menu);

}

static void

gtk_option_menu_changed (GtkOptionMenu *option_menu)

{

  g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));

  g_signal_emit (option_menu, signals[CHANGED], 0);

}

static void

gtk_option_menu_select_first_sensitive (GtkOptionMenu *option_menu)

{

  if (option_menu->menu)

    {

      GList *children = GTK_MENU_SHELL (option_menu->menu)->children;

      gint index = 0;

      while (children)

	{

	  if (gtk_widget_get_sensitive (children->data))

	    {

	      gtk_option_menu_set_history (option_menu, index);

	      return;

	    }

	  children = children->next;

	  index++;

	}

    }

}

static void

gtk_option_menu_item_state_changed_cb (GtkWidget      *widget,

				       GtkStateType    previous_state,

				       GtkOptionMenu  *option_menu)

{

  GtkWidget *child = GTK_BIN (option_menu)->child;

  if (child && gtk_widget_get_sensitive (child) != gtk_widget_is_sensitive (widget))

    gtk_widget_set_sensitive (child, gtk_widget_is_sensitive (widget));

}

static void

gtk_option_menu_item_destroy_cb (GtkWidget     *widget,

				 GtkOptionMenu *option_menu)

{

  GtkWidget *child = GTK_BIN (option_menu)->child;

  if (child)

    {

      g_object_ref (child);

      gtk_option_menu_remove_contents (option_menu);

      gtk_widget_destroy (child);

      g_object_unref (child);

      gtk_option_menu_select_first_sensitive (option_menu);

    }

}

static void

gtk_option_menu_update_contents (GtkOptionMenu *option_menu)

{

  GtkWidget *child;

  GtkRequisition child_requisition;

  g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));

  if (option_menu->menu)

    {

      GtkWidget *old_item = option_menu->menu_item;

      gtk_option_menu_remove_contents (option_menu);

      option_menu->menu_item = gtk_menu_get_active (GTK_MENU (option_menu->menu));

      if (option_menu->menu_item)

	{

	  g_object_ref (option_menu->menu_item);

	  child = GTK_BIN (option_menu->menu_item)->child;

	  if (child)

	    {

	      if (!gtk_widget_is_sensitive (option_menu->menu_item))

		gtk_widget_set_sensitive (child, FALSE);

	      gtk_widget_reparent (child, GTK_WIDGET (option_menu));

	    }

	  g_signal_connect (option_menu->menu_item, "state-changed",

			    G_CALLBACK (gtk_option_menu_item_state_changed_cb), option_menu);

	  g_signal_connect (option_menu->menu_item, "destroy",

			    G_CALLBACK (gtk_option_menu_item_destroy_cb), option_menu);

	  gtk_widget_size_request (child, &child_requisition);

	  gtk_widget_size_allocate (GTK_WIDGET (option_menu),

				    &(GTK_WIDGET (option_menu)->allocation));

	  if (GTK_WIDGET_DRAWABLE (option_menu))

	    gtk_widget_queue_draw (GTK_WIDGET (option_menu));

	}

      if (old_item != option_menu->menu_item)

        gtk_option_menu_changed (option_menu);

    }

}

static void

gtk_option_menu_remove_contents (GtkOptionMenu *option_menu)

{

  GtkWidget *child;

  g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));

  if (option_menu->menu_item)

    {

      child = GTK_BIN (option_menu)->child;

      if (child)

	{

	  gtk_widget_set_sensitive (child, TRUE);

	  gtk_widget_set_state (child, GTK_STATE_NORMAL);

	  gtk_widget_reparent (child, option_menu->menu_item);

	}

      g_signal_handlers_disconnect_by_func (option_menu->menu_item,

					    gtk_option_menu_item_state_changed_cb,

					    option_menu);				     

      g_signal_handlers_disconnect_by_func (option_menu->menu_item,

					    gtk_option_menu_item_destroy_cb,

					    option_menu);   

      g_object_unref (option_menu->menu_item);

      option_menu->menu_item = NULL;

    }

}

static void

gtk_option_menu_calc_size (GtkOptionMenu *option_menu)

{

  GtkWidget *child;

  GList *children;

  GtkRequisition child_requisition;

  gint old_width = option_menu->width;

  gint old_height = option_menu->height;

  g_return_if_fail (GTK_IS_OPTION_MENU (option_menu));

  option_menu->width = 0;

  option_menu->height = 0;

  if (option_menu->menu)

    {

      children = GTK_MENU_SHELL (option_menu->menu)->children;

      while (children)

	{

	  child = children->data;

	  children = children->next;

	  if (gtk_widget_get_visible (child))

	    {

	      GtkWidget *inner = GTK_BIN (child)->child;

	      if (inner)

		{

		  gtk_widget_size_request (inner, &child_requisition);

		  option_menu->width = MAX (option_menu->width, child_requisition.width);

		  option_menu->height = MAX (option_menu->height, child_requisition.height);

		}

	    }

	}

    }

  if (old_width != option_menu->width || old_height != option_menu->height)

    gtk_widget_queue_resize (GTK_WIDGET (option_menu));

}

static void

gtk_option_menu_position (GtkMenu  *menu,

			  gint     *x,

			  gint     *y,

			  gboolean *push_in,

			  gpointer  user_data)

{

  GtkOptionMenu *option_menu;

  GtkWidget *active;

  GtkWidget *child;