Add evas_object_smart_callback_del_full API

Patch by Raphael Kubo Costas (rakuco)


SVN revision: 67246

legacy/evas/ChangeLog

@@ -633,4 +633,8 @@
           can cause issues if new configs are added. Now we have evas allocate it
           for you.
 
+2012-01-16  Raphael Kubo da Costa (rakuco)
 
+	* Add evas_object_smart_callback_del_full() to allow users to
+	unregister a specific smart event callback instead of all
+	callbacks matching a given type and function pointer.

legacy/evas/NEWS

@@ -7,6 +7,7 @@ Additions:
 
    * Textblock now supports self-closing tags, i.e <br/>. Those should be used instead of the old <br> way.
    * Shm engine for drawing in Wayland.
+   * evas_object_smart_callback_del_full API.
 
 Improvements:
 

legacy/evas/src/lib/Evas.h

@@ -9846,6 +9846,34 @@ EAPI void              evas_object_smart_callback_priority_add(Evas_Object *obj,
  */
 EAPI void             *evas_object_smart_callback_del    (Evas_Object *obj, const char *event, Evas_Smart_Cb func) EINA_ARG_NONNULL(1, 2, 3);
 
+/**
+ * Delete (unregister) a callback function from the smart event
+ * specified by @p event on the smart object @p obj.
+ *
+ * @param obj a smart object
+ * @param event the event's name string
+ * @param func the callback function
+ * @param data the data pointer that was passed to the callback
+ * @return the data pointer
+ *
+ * This function removes <b>the first</b> added smart callback on the
+ * object @p obj matching the event name @p event, the registered
+ * function pointer @p func and the callback data pointer @p data. If
+ * the removal is successful it will also return the data pointer that
+ * was passed to evas_object_smart_callback_add() (that will be the same
+ * as the parameter) when the callback(s) was(were) added to the canvas.
+ * If not successful @c NULL will be returned. A common use would be to
+ * remove an exact match of a callback
+ *
+ * @see evas_object_smart_callback_add() for more details.
+ * @since 1.2.0
+ * @ingroup Evas_Smart_Object_Group
+ *
+ * @note To delete all smart event callbacks which match @p type and @p func,
+ * use evas_object_smart_callback_del().
+ */
+EAPI void             *evas_object_smart_callback_del_full(Evas_Object *obj, const char *event, Evas_Smart_Cb func, const void *data) EINA_ARG_NONNULL(1, 2, 3);
+
 /**
  * Call a given smart callback on the smart object @p obj.
  *

legacy/evas/src/lib/canvas/evas_object_smart.c

@@ -402,6 +402,37 @@ evas_object_smart_callback_del(Evas_Object *obj, const char *event, Evas_Smart_C
    return NULL;
 }
 
+EAPI void *
+evas_object_smart_callback_del_full(Evas_Object *obj, const char *event, Evas_Smart_Cb func, const void *data)
+{
+   Evas_Object_Smart *o;
+   Eina_List *l;
+   Evas_Smart_Callback *cb;
+
+   MAGIC_CHECK(obj, Evas_Object, MAGIC_OBJ);
+   return NULL;
+   MAGIC_CHECK_END();
+   o = (Evas_Object_Smart *)(obj->object_data);
+   MAGIC_CHECK(o, Evas_Object_Smart, MAGIC_OBJ_SMART);
+   return NULL;
+   MAGIC_CHECK_END();
+   if (!event) return NULL;
+   EINA_LIST_FOREACH(o->callbacks, l, cb)
+     {
+        if ((!strcmp(cb->event, event)) && (cb->func == func) && (cb->func_data == data))
+          {
+             void *data;
+
+             data = cb->func_data;
+             cb->delete_me = 1;
+             o->deletions_waiting = 1;
+             evas_object_smart_callbacks_clear(obj);
+             return data;
+          }
+     }
+   return NULL;
+}
+
 EAPI void
 evas_object_smart_callback_call(Evas_Object *obj, const char *event, void *event_info)
 {