UtilGUI.java 文件源码

/** 
 * Track a Window's position across application restarts; location is saved
 * in a Preferences node that you pass in; we attach a ComponentListener to
 * the Window.
 */
public static void monitorWindowPosition(
    final Window w, final Preferences pNode) {

    // Get the current saved position, if any
    Point p = getSavedLocation(pNode);
    int savedX = (int)p.getX();
    int savedY = (int)p.getY();
    if (savedX != -1) {
        // Move window to is previous location
        w.setLocation(savedX, savedY);
    } else {
        // Not saved yet, at least make it look nice
        centre(w);
    }
    // Now make sure that if the user moves the window,
    // we will save the new position.
    w.addComponentListener(new ComponentAdapter() {
        @Override
        public void componentMoved(ComponentEvent e) {
            setSavedLocation(pNode, w);
        }
    });
}