+ /// Returns true, if default value of the widget should be computed
+ /// on operation's execute, like radius for circle's constraint (can not be zero)
+ bool isComputedDefault() { return myIsComputedDefault; }
+
+ /// Returns true, if default value of the widget is defined in the XML and it is not the
+ /// computed value
+ /// \return the boolean result
+ bool isValueDefault() { return myIsValueDefault; }
+
+ /// Defines if it is supposed that the widget should interact with the viewer.
+ virtual bool isViewerSelector() { return false; }
+
+ /// Defines if it is supported to set the value in this widget
+ /// By default it returns true
+ virtual bool canSetValue() const { return true; };
+
+ /// Set the given wrapped value to the current widget
+ /// This value should be processed in the widget according to the needs
+ /// \param theValue the wrapped widget value
+ virtual bool setSelection(ModuleBase_ViewerPrs theValue)