Java 类org.eclipse.gef.tools.MarqueeDragTracker 实例源码

/**
 * Should not be called, but returns a MarqeeDragTracker for good measure.
 * 
 * @see org.eclipse.gef.EditPart#getDragTracker(org.eclipse.gef.Request)
 */
public DragTracker getDragTracker(Request req) {
    /*
     * The root will only be asked for a drag tracker if for some reason the
     * contents editpart says it is neither selector nor opaque.
     */
    return new MarqueeDragTracker();
}

/**
 * Should not be called, but returns a MarqeeDragTracker for good measure.
 * 
 * @see org.eclipse.gef.EditPart#getDragTracker(org.eclipse.gef.Request)
 */
public DragTracker getDragTracker(Request req) {
    /*
     * The root will only be asked for a drag tracker if for some reason the
     * contents EditPart is not selectable or has a non-opaque figure.
     */
    return new MarqueeDragTracker();
}

@Override
public DragTracker getDragTracker(Request request){
    return new MarqueeDragTracker();
}

/**
 * Should never be called.
 * 
 * @see org.eclipse.gef.EditPart#getDragTracker(org.eclipse.gef.Request)
 */
public DragTracker getDragTracker(Request req) {
    // The drawing cannot be dragged.
    return new MarqueeDragTracker();
}