/**
* Tells whether the action of this guard can be seen or not
*
* @return <code>true</code> if the action can be seen
*/
public boolean isVisible() {
return source.getDockActionCount() > 0;
}
/**
* Sets the visibility of the action. The visibility can be changed at any time and has effect on
* all occurrences of the action.
*
* @param visible the new state
*/
public void setVisible(boolean visible) {
if (visible != isVisible()) {
if (visible) source.add(action);
else source.remove(0, source.getDockActionCount());
}
}