/*
* @(#)ChangeConnectionStartHandle.java
*
* Project: JHotdraw - a GUI framework for technical drawings
* http://www.jhotdraw.org
* http://jhotdraw.sourceforge.net
* Copyright: ? by the original author(s) and all contributors
* License: Lesser GNU Public License (LGPL)
* http://www.opensource.org/licenses/lgpl-license.html
*/
package research;
import research.connector.Connector;
import java.awt.Point;
/**
* Handle to reconnect the
* start of a connection to another figure.
*
* @version <$CURRENT_VERSION$>
*/
public class ChangeConnectionStartHandle extends ChangeConnectionHandle {
/**
* Constructs the connection handle for the given start figure.
*/
public ChangeConnectionStartHandle(Figure owner) {
super(owner);
}
/**
* Gets the start figure of a connection.
*/
protected Connector target() {
return getConnection().getStartConnector();
}
/**
* Disconnects the start figure.
*/
protected void disconnect() {
getConnection().disconnectStart();
}
/**
* Sets the start of the connection.
*/
protected void connect(Connector c) {
getConnection().connectStart(c);
}
/**
* Sets the start point of the connection.
*/
protected void setPoint(int x, int y) {
getConnection().startPoint(x, y);
}
/**
* Returns the start point of the connection.
*/
public Point locate() {
return getConnection().startPoint();
}
/**
* Factory method for undo activity
*/
protected Undoable createUndoActivity(DrawingView newView) {
return new UndoActivity(newView);
}
public static class UndoActivity extends ChangeConnectionHandle.UndoActivity {
public UndoActivity(DrawingView newView) {
super(newView);
}
protected Connector replaceConnector(ConnectionFigure connection) {
Connector tempStartConnector = connection.getStartConnector();
connection.connectStart(getOldConnector());
return tempStartConnector;
}
}
}