public void drawPrevious() {
if (!_dsi.atStart()) _dsi.retreat();
DataSetElement dse = null;
while (!_dsi.atStart()) {
dse = _dsi.getElement();
if (_filter.isAcceptable(dse)) break;
_dsi.retreat();
}
_timeText.setText(dse.getXString());
for (int i = 0; i < _dse.getDimension(); i++) _dse.setX(i, dse.getX(i + 1));
_pdm.setReferenceObject(_dse);
_canvas.redoNextPaint();
_canvas.repaint();
if (_dsi.atStart()) {
timer.stopAnimation();
return;
}
}
public void drawNext() {
if (_dsi.atEnd()) {
timer.stopAnimation();
}
DataSetElement dse = null;
while (!_dsi.atEnd()) {
dse = _dsi.getElement();
if (_filter.isAcceptable(dse)) break;
_dsi.advance();
}
if (dse == null) return; // no more good elements, probably at end
_timeText.setText(dse.getXString());
for (int i = 0; i < _dse.getDimension(); i++) _dse.setX(i, dse.getX(i + 1));
// System.out.println(_dse);
_pdm.setReferenceObject(_dse);
_canvas.redoNextPaint();
_canvas.repaint();
if (!_dsi.atEnd()) _dsi.advance();
}