add e_widget_check_widget_disable_on_* api for automatically enabling/disabling widgets without needing to add more callbacks

SVN revision: 83661

ChangeLog

@@ -1,3 +1,7 @@
+2013-02-06 Mike Blumenkrantz
+
+        * added api to automatically disable widgets when checkboxes are checked or unchecked
+
 2013-02-05 Mike Blumenkrantz
 
         * improve load time of apps dialogs

NEWS

@@ -23,6 +23,7 @@ Additions:
         * added functions for freeing binding config structs
         * E_Config_DD structs are now tracked and retrievable through e_config_descriptor_find
         * add e_border_pointer_warp_to_center_now()
+        * e_widget_check_widget_disable_on_*
     Config:
         * Added option for disabling icons in menus
         * Added option for disabling pointer warping when performing directional focus changes using winlist

src/bin/e_widget_check.c

@@ -6,16 +6,37 @@ struct _E_Widget_Data
    Evas_Object *o_check;
    Evas_Object *o_icon;
    int         *valptr;
+   Eina_List *widgets_enable;
+   Eina_List *widgets_disable;
 };
 
 /* local subsystem functions */
 
+static void
+_extern_obj_enable_del(void *data, Evas *e EINA_UNUSED, Evas_Object *obj, void *event_info EINA_UNUSED)
+{
+   E_Widget_Data *wd = data;
+   wd->widgets_enable = eina_list_remove(wd->widgets_enable, obj);
+}
+
+static void
+_extern_obj_disable_del(void *data, Evas *e EINA_UNUSED, Evas_Object *obj, void *event_info EINA_UNUSED)
+{
+   E_Widget_Data *wd = data;
+   wd->widgets_disable = eina_list_remove(wd->widgets_disable, obj);
+}
+
 static void
 _e_wid_del_hook(Evas_Object *obj)
 {
    E_Widget_Data *wd;
+   Evas_Object *o;
 
    wd = e_widget_data_get(obj);
+   EINA_LIST_FREE(wd->widgets_enable, o)
+     evas_object_event_callback_del_full(o, EVAS_CALLBACK_DEL, _extern_obj_enable_del, wd);
+   EINA_LIST_FREE(wd->widgets_disable, o)
+     evas_object_event_callback_del_full(o, EVAS_CALLBACK_DEL, _extern_obj_disable_del, wd);
    free(wd);
 }
 
@@ -47,6 +68,9 @@ _e_wid_do(Evas_Object *obj)
    wd = e_widget_data_get(obj);
    if (wd->valptr)
      {
+        Eina_List *l;
+        Evas_Object *o;
+
         if (*(wd->valptr) == 0)
           {
              *(wd->valptr) = 1;
@@ -57,6 +81,10 @@ _e_wid_do(Evas_Object *obj)
              *(wd->valptr) = 0;
              edje_object_signal_emit(wd->o_check, "e,state,unchecked", "e");
           }
+        EINA_LIST_FOREACH(wd->widgets_enable, l, o)
+          e_widget_disabled_set(o, *wd->valptr);
+        EINA_LIST_FOREACH(wd->widgets_disable, l, o)
+          e_widget_disabled_set(o, !(*wd->valptr));
      }
    evas_object_smart_callback_call(obj, "changed", NULL);
    e_widget_change(obj);
@@ -92,7 +120,6 @@ _e_wid_focus_steal(void *data, Evas *e __UNUSED__, Evas_Object *obj __UNUSED__,
    e_widget_focus_steal(data);
 }
 
-
 /* externally accessible functions */
 
 /**
@@ -204,6 +231,43 @@ e_widget_check_checked_get(Evas_Object *check)
    return ret;
 }
 
+/**
+ * Add widget to disable when check object is checked
+ * @param check the check box widget
+ * @param obj the object to disable when @p check is checked
+ */
+EAPI void
+e_widget_check_widget_disable_on_checked_add(Evas_Object *check, Evas_Object *obj)
+{
+   E_Widget_Data *wd;
+
+   EINA_SAFETY_ON_NULL_RETURN(check);
+   EINA_SAFETY_ON_NULL_RETURN(obj);
+   wd = e_widget_data_get(check);
+   EINA_SAFETY_ON_NULL_RETURN(wd);
+   evas_object_event_callback_add(obj, EVAS_CALLBACK_DEL, _extern_obj_enable_del, wd);
+   wd->widgets_enable = eina_list_append(wd->widgets_enable, obj);
+}
+
+/**
+ * Add widget to disable when check object is unchecked
+ * @param check the check box widget
+ * @param obj the object to disable when @p check is not unchecked
+ */
+EAPI void
+e_widget_check_widget_disable_on_unchecked_add(Evas_Object *check, Evas_Object *obj)
+{
+   E_Widget_Data *wd;
+
+   EINA_SAFETY_ON_NULL_RETURN(check);
+   EINA_SAFETY_ON_NULL_RETURN(obj);
+   wd = e_widget_data_get(check);
+   EINA_SAFETY_ON_NULL_RETURN(wd);
+   evas_object_event_callback_add(obj, EVAS_CALLBACK_DEL, _extern_obj_disable_del, wd);
+   wd->widgets_disable = eina_list_append(wd->widgets_disable, obj);
+}
+
+
 /**
  * Creates a check box widget with icon
  *

src/bin/e_widget_check.h

@@ -9,5 +9,7 @@ EAPI int	  e_widget_check_checked_get(Evas_Object *check);
 EAPI void e_widget_check_valptr_set(Evas_Object *check, int *val);
 EAPI Evas_Object *e_widget_check_icon_add(Evas *evas, const char *label, const char *icon, int icon_w, int icon_h, int *val);
 
+EAPI void e_widget_check_widget_disable_on_checked_add(Evas_Object *check, Evas_Object *obj);
+EAPI void e_widget_check_widget_disable_on_unchecked_add(Evas_Object *check, Evas_Object *obj);
 #endif
 #endif