How to use

changed

method

in

org.jhotdraw.draw.BezierFigure

  @Override
  public void undo() throws CannotUndoException {
    super.undo();
    willChange();
    removeNode(index);
    changed();
  }
});

@Override
public void redo() throws CannotRedoException {
  super.redo();
  willChange();
  addNode(index, newNode);
  changed();
}

@Override
public void redo() throws CannotRedoException {
  super.redo();
  owner.willChange();
  owner.setNode(index, newValue);
  owner.changed();
  if (oldValue.mask != newValue.mask) {
  }
}

@Override
public void undo() throws CannotUndoException {
  super.undo();
  owner.willChange();
  owner.setNode(index, oldValue);
  owner.changed();
}

  @Override
  public void undo() throws CannotUndoException {
    super.undo();
    view.removeFromSelection(f);
    f.willChange();
    f.addNode(index, removedNode);
    f.changed();
    view.addToSelection(f);
  }
});

@Override
public void redo() throws CannotRedoException {
  super.redo();
  view.removeFromSelection(f);
  f.willChange();
  f.removeNode(index);
  f.changed();
  view.addToSelection(f);
}

  @Override
  public void undo() throws CannotUndoException {
    super.undo();
    view.removeFromSelection(f);
    f.willChange();
    f.addNode(index, removedNode);
    f.changed();
    view.addToSelection(f);
  }
});

@Override
public void redo() throws CannotRedoException {
  super.redo();
  view.removeFromSelection(f);
  f.willChange();
  f.removeNode(index);
  f.changed();
  view.addToSelection(f);
}

changed();
evt.consume();
return true;

figure.changed();

f.willChange();
f.setPoint(index, controlPointIndex, new Point2D.Double(oldNode.x[controlPointIndex], oldNode.y[controlPointIndex] - 1d));
f.changed();
view.getDrawing().fireUndoableEditHappened(new BezierNodeEdit(f, index, oldNode, f.getNode(index)));
evt.consume();
f.willChange();
f.setPoint(index, controlPointIndex, new Point2D.Double(oldNode.x[controlPointIndex], oldNode.y[controlPointIndex] + 1d));
f.changed();
view.getDrawing().fireUndoableEditHappened(new BezierNodeEdit(f, index, oldNode, f.getNode(index)));
evt.consume();
f.willChange();
f.setPoint(index, controlPointIndex, new Point2D.Double(oldNode.x[controlPointIndex] - 1d, oldNode.y[controlPointIndex]));
f.changed();
view.getDrawing().fireUndoableEditHappened(new BezierNodeEdit(f, index, oldNode, f.getNode(index)));
evt.consume();
f.willChange();
f.setPoint(index, controlPointIndex, new Point2D.Double(oldNode.x[controlPointIndex] + 1d, oldNode.y[controlPointIndex]));
f.changed();
view.getDrawing().fireUndoableEditHappened(new BezierNodeEdit(f, index, oldNode, f.getNode(index)));
evt.consume();

f.willChange();
f.setPoint(index, new Point2D.Double(oldNode.x[0], oldNode.y[0] - 1d));
f.changed();
view.getDrawing().fireUndoableEditHappened(new BezierNodeEdit(f, index, oldNode, f.getNode(index)));
evt.consume();
f.willChange();
f.setPoint(index, new Point2D.Double(oldNode.x[0], oldNode.y[0] + 1d));
f.changed();
view.getDrawing().fireUndoableEditHappened(new BezierNodeEdit(f, index, oldNode, f.getNode(index)));
evt.consume();
f.willChange();
f.setPoint(index, new Point2D.Double(oldNode.x[0] - 1d, oldNode.y[0]));
f.changed();
view.getDrawing().fireUndoableEditHappened(new BezierNodeEdit(f, index, oldNode, f.getNode(index)));
evt.consume();
f.willChange();
f.setPoint(index, new Point2D.Double(oldNode.x[0] + 1d, oldNode.y[0]));
f.changed();
view.getDrawing().fireUndoableEditHappened(new BezierNodeEdit(f, index, oldNode, f.getNode(index)));
evt.consume();
f.willChange();
final BezierPath.Node removedNode = f.removeNode(index);
f.changed();
fireHandleRequestRemove(invalidatedArea);
fireUndoableEditHappened(new AbstractUndoableEdit() {

createdFigure.changed();
nodeCountBeforeDrag = createdFigure.getNodeCount();

  figure.setPoint(index, c2, p2);
figure.changed();
fireAreaInvalidated(figure.getNode(index));

f.willChange();
final BezierPath.Node removedNode = f.removeNode(index);
f.changed();
fireHandleRequestRemove(invalidatedArea);
fireUndoableEditHappened(new AbstractUndoableEdit() {

protected void addPointToFigure(Point2D.Double newPoint) {
  int pointCount = createdFigure.getNodeCount();
  createdFigure.willChange();
  if (pointCount < 2) {
    createdFigure.addNode(new BezierPath.Node(newPoint));
  } else {
    Point2D.Double endPoint = createdFigure.getEndPoint();
    Point2D.Double secondLastPoint = (pointCount <= 1) ? endPoint : createdFigure.getPoint(pointCount - 2, 0);
    if (newPoint.equals(endPoint)) {
      // nothing to do
    } else if (pointCount > 1 && Geom.lineContainsPoint(newPoint.x, newPoint.y, secondLastPoint.x, secondLastPoint.y, endPoint.x, endPoint.y, 0.9f / getView().getScaleFactor())) {
      createdFigure.setPoint(pointCount - 1, 0, newPoint);
    } else {
      createdFigure.addNode(new BezierPath.Node(newPoint));
    }
  }
  createdFigure.changed();
}

@Override
public void trackStep(Point anchor, Point lead, int modifiersEx) {
  BezierFigure figure = getOwner();
  figure.willChange();
  Point2D.Double p = view.getConstrainer().constrainPoint(view.viewToDrawing(lead));
  if (getTransformOwner().get(TRANSFORM) != null) {
    try {
      getTransformOwner().get(TRANSFORM).inverseTransform(p, p);
    } catch (NoninvertibleTransformException ex) {
      ex.printStackTrace();
    }
  }
  BezierPath.Node n = figure.getNode(index);
  //fireAreaInvalidated(n);
  n.moveTo(p);
  //fireAreaInvalidated(n);
  figure.setNode(index, n);
  figure.changed();
}

f.changed();
fireHandleRequestSecondaryHandles();