private int chartHeight;
private ViewReadyCallback readyListener;
private boolean viewReady;
public PlotPanel() {
CaptureFocusHandler setFocusHandler = new CaptureFocusHandler(this);
addMouseDownHandler(setFocusHandler);
addFocusHandler(setFocusHandler);
addBlurHandler(setFocusHandler);
addMouseDownHandler(mouseDownHandler);