How to use

contains

method

in

org.jhotdraw.draw.Drawing

private void show(final boolean doShow) {
  final JHotDrawImageCanvas canvas = displayViewer.getCanvas();
  final Drawing drawing = canvas.getDrawing();
  final Figure fig = getFigure();
  if (doShow) {
    if (!drawing.contains(fig)) {
      drawing.add(fig);
    }
  }
  else {
    if (drawing.contains(fig)) {
      drawing.remove(fig);
    }
  }
}

private void show(final boolean doShow) {
  final JHotDrawImageCanvas canvas = displayViewer.getCanvas();
  final Drawing drawing = canvas.getDrawing();
  final Figure fig = getFigure();
  if (doShow) {
    if (!drawing.contains(fig)) {
      drawing.add(fig);
    }
  }
  else {
    if (drawing.contains(fig)) {
      drawing.remove(fig);
    }
  }
}