/**
* Refresh the geometry. Check that the sites that the handles are attached to are the same as the
* sites at the ends of the connector, and if not, fix them. This is needed because some clients
* might unnecessarily over-write the sites that a connector is already snapped to. If the
* grab-handles aren't re-attached accordingly, grabbing and moving them will cause unpredictable
* results.
*/
public void refresh() {
Connector c = (Connector) getChild();
// Check sites
if (c != null) {
if (_headHandle.getSite() != c.getHeadSite()) {
_headHandle.setSite(c.getHeadSite());
}
if (_tailHandle.getSite() != c.getTailSite()) {
_tailHandle.setSite(c.getTailSite());
}
}
}
/**
* Clear the current grab handles and create one for each of the head and tail sites. Subclasses
* may override this to create additional grab handles.
*
* @param connector The connector.
*/
protected void _createGrabHandles(Connector connector) {
clearGrabHandles();
// Create the grab handles and set them up
GrabHandleFactory factory = getGrabHandleFactory();
_headHandle = factory.createGrabHandle(connector.getHeadSite());
_tailHandle = factory.createGrabHandle(connector.getTailSite());
_headHandle.setParent(this);
_tailHandle.setParent(this);
_headHandle.setInteractor(getHandleInteractor());
_tailHandle.setInteractor(getHandleInteractor());
addGrabHandle(_headHandle);
addGrabHandle(_tailHandle);
}