public void mouseEnter(MouseEvent e) {
if (entered == 0) {
root.addPaintListener(painter);
setBackground(root, ColorUtil.get(220, 220, 255));
}
entered++;
}
private static class SelectableMouseTrackListener implements MouseTrackListener {
SelectableMouseTrackListener(Control root) {
this.root = root;
initialBg = root.getBackground();
root.addDisposeListener(
new DisposeListener() {
public void widgetDisposed(DisposeEvent e) {
SelectableMouseTrackListener.this.root = null;
border = null;
painter = null;
initialBg = null;
}
});
}
private Control root;
private Color initialBg;
private BorderStyle border = new BorderStyle.SimpleLine(ColorUtil.get(180, 180, 255), 1);
private PaintListener painter =
new PaintListener() {
public void paintControl(PaintEvent e) {
border.paint(e, 0);
}
};
private int entered = 0;
public void mouseEnter(MouseEvent e) {
if (entered == 0) {
root.addPaintListener(painter);
setBackground(root, ColorUtil.get(220, 220, 255));
}
entered++;
}
public void mouseExit(MouseEvent e) {
if (--entered == 0) {
root.removePaintListener(painter);
setBackground(root, initialBg);
}
}
public void mouseHover(MouseEvent e) {}
}
