/**
* Connects the figure to the new target. If there is no new target the connection reverts to its
* original one.
*/
public void invokeEnd(int x, int y, int anchorX, int anchorY, DrawingView view) {
Connector target = findConnectionTarget(x, y, view.drawing());
if (target == null) {
target = fOriginalTarget;
}
setPoint(x, y);
connect(target);
getConnection().updateConnection();
Connector oldConnector =
((ChangeConnectionHandle.UndoActivity) getUndoActivity()).getOldConnector();
// there has been no change so there is nothing to undo
if ((oldConnector == null)
|| (target() == null)
|| (oldConnector.owner() == target().owner())) {
setUndoActivity(null);
} else {
getUndoActivity().setAffectedFigures(new SingleFigureEnumerator(getConnection()));
}
if (getTargetFigure() != null) {
getTargetFigure().connectorVisibility(false);
setTargetFigure(null);
}
}
/**
* Performs a layout of the connection. This is called when the connection itself changes. By
* default the start and end points of the connection are recalculated.
*/
public void layoutConnection() {
if (startConnector != null) {
Point start = startConnector.findStart(this);
if (start != null) {
startPoint(start.x, start.y);
}
}
if (endConnector != null) {
Point end = endConnector.findEnd(this);
if (end != null) {
endPoint(end.x, end.y);
}
}
clearShapeCache();
}
/**
* @see CH.ifa.draw.standard.AbstractConnector#findPoint(CH.ifa.draw.framework.ConnectionFigure)
*/
public Point findEnd(ConnectionFigure connection) {
if (connection instanceof FlowConnection) {
// Trying to establish a flow connection; forward to the socket's flow connector
return socketConnector.findEnd(connection);
}
return super.findEnd(connection);
}
/** Finds a new target of the connection. */
public void invokeStep(int x, int y, int anchorX, int anchorY, DrawingView view) {
Point p = new Point(x, y);
Figure f = findConnectableFigure(x, y, view.drawing());
// track the figure containing the mouse
if (f != getTargetFigure()) {
if (getTargetFigure() != null) {
getTargetFigure().connectorVisibility(false);
}
setTargetFigure(f);
if (getTargetFigure() != null) {
getTargetFigure().connectorVisibility(true);
}
}
Connector target = findConnectionTarget(p.x, p.y, view.drawing());
if (target != null) {
p = Geom.center(target.displayBox());
}
setPoint(p.x, p.y);
}
/**
* Gets the end figure of the connection.
*
* @return The end figure or null if not connected
* @see CH.ifa.draw.framework.ConnectionFigure#endFigure()
*/
public Figure endFigure() {
if (endConnector != null) {
return endConnector.owner();
}
return null;
}
/**
* Gets the start figure of the connection.
*
* @return The start figure or null if not connected
* @see CH.ifa.draw.framework.ConnectionFigure#startFigure()
*/
public Figure startFigure() {
if (startConnector != null) {
return startConnector.owner();
}
return null;
}