+ if (IMAGE_INSTANCE_WIDGET_ITEMS_CHANGED (ii)
+ ||
+ IMAGE_INSTANCE_WIDGET_ACTION_OCCURRED (ii))
+ {
+ /* If only the order has changed then simply select the first
+ one of the pending set. This stops horrendous rebuilding -
+ and hence flicker - of the tabs each time you click on
+ one. */
+ if (tab_control_order_only_changed (image_instance))
+ {
+ Lisp_Object rest, selected =
+ gui_item_list_find_selected
+ (NILP (IMAGE_INSTANCE_WIDGET_PENDING_ITEMS (ii)) ?
+ XCDR (IMAGE_INSTANCE_WIDGET_ITEMS (ii)) :
+ XCDR (IMAGE_INSTANCE_WIDGET_PENDING_ITEMS (ii)));
+
+ LIST_LOOP (rest, XCDR (IMAGE_INSTANCE_WIDGET_ITEMS (ii)))
+ {
+ if (gui_item_equal_sans_selected (XCAR (rest), selected, 0))
+ {
+ /* There may be an encapsulated way of doing this,
+ but I couldn't find it. */
+ Lisp_Object old_selected =gui_item_list_find_selected
+ (XCDR (IMAGE_INSTANCE_WIDGET_ITEMS (ii)));
+ Arg al [1];
+ char* name;
+ unsigned int num_children, i;
+ Widget* children;
+
+ LISP_STRING_TO_EXTERNAL (XGUI_ITEM (XCAR (rest))->name,
+ name, Qnative);
+ /* The name may contain a `.' which confuses
+ XtNameToWidget, so we do it ourselves. */
+ children = XtCompositeChildren (IMAGE_INSTANCE_X_WIDGET_ID (ii),
+ &num_children);
+ for (i = 0; i < num_children; i++)
+ {
+ if (!strcmp (XtName (children [i]), name))
+ {
+ XtSetArg (al [0], XtNtopWidget, children [i]);
+ XtSetValues (IMAGE_INSTANCE_X_WIDGET_ID (ii), al, 1);
+ break;
+ }
+ }
+ /* Pick up the new selected item. */
+ XGUI_ITEM (old_selected)->selected =
+ XGUI_ITEM (XCAR (rest))->selected;
+ XGUI_ITEM (XCAR (rest))->selected =
+ XGUI_ITEM (selected)->selected;
+ /* We're not actually changing the items anymore. */
+ IMAGE_INSTANCE_WIDGET_ITEMS_CHANGED (ii) = 0;
+ IMAGE_INSTANCE_WIDGET_PENDING_ITEMS (ii) = Qnil;
+ break;
+ }
+ }
+ }
+ }