/**
* React to a changes in the attributes by changing the icon.
*
* @param attribute The attribute that changed.
* @exception IllegalActionException If the change is not acceptable to this container (should not
* be thrown).
*/
@Override
public void attributeChanged(Attribute attribute) throws IllegalActionException {
if (attribute == x
|| attribute == y
|| attribute == arrowLength
|| attribute == arrowWidth
|| attribute == lineColor) {
double xValue = ((DoubleToken) x.getToken()).doubleValue();
double yValue = ((DoubleToken) y.getToken()).doubleValue();
double arrowLengthValue = ((DoubleToken) arrowLength.getToken()).doubleValue();
double arrowWidthValue = ((DoubleToken) arrowWidth.getToken()).doubleValue();
_icon.setShape(_createArrow(xValue, yValue, arrowLengthValue, arrowWidthValue));
_icon.setLineColor(lineColor.asColor());
_icon.setFillColor(lineColor.asColor());
} else {
super.attributeChanged(attribute);
}
}
/** Override the default setStyle. Legal styles <em>do not</em> include MARK or MARK_LINE. */
public void setStyle(int st) {
if (st == MARK || st == MARK_LINE) return;
super.setStyle(st);
}
