bind property data with the given key string. when the data is ready or changed, bind the data to the key action and process promised work.
Eina_Error efl_ui_property_bind(Eo *obj, const char *key, const char *property);
Event dispatched when a property on the object has changed due to a user interaction on the object that a model could be interested in.
Event dispatched when a property on the object is bound to a model. This is useful to avoid generating too many events.