+ /**
+ * @brief This signal is emitted when the widget is aborted.
+ *
+ * @since_tizen 3.0
+ * @privlevel public
+ * @privilege %http://tizen.org/privilege/widget.viewer
+ * @return The signal to connect to.
+ */
+ WidgetViewSignalType& WidgetAbortedSignal();
+
+ /**
+ * @brief This signal is emitted when the widget is resized.
+ *
+ * @since_tizen 3.0
+ * @privlevel public
+ * @privilege %http://tizen.org/privilege/widget.viewer
+ * @return The signal to connect to.
+ */
+ WidgetViewSignalType& WidgetResized();
+
+ /**
+ * @brief This signal is emitted when the widget content is updated.
+ *
+ * @since_tizen 3.0
+ * @privlevel public
+ * @privilege %http://tizen.org/privilege/widget.viewer
+ * @return The signal to connect to.
+ */
+ WidgetViewSignalType& WidgetContentUpdated();
+
+ /**
+ * @brief This signal is emitted when the widget extra info is updated.
+ *
+ * @since_tizen 3.0
+ * @privlevel public
+ * @privilege %http://tizen.org/privilege/widget.viewer
+ * @return The signal to connect to.
+ */
+ WidgetViewSignalType& WidgetExtraInfoUpdated();
+
+ /**
+ * @brief This signal is emitted when the widget update period is changed.
+ *
+ * @since_tizen 3.0
+ * @privlevel public
+ * @privilege %http://tizen.org/privilege/widget.viewer
+ * @return The signal to connect to.
+ */
+ WidgetViewSignalType& WidgetUpdatePeriodChanged();
+