java - 重新定位 Jtable 列标题

Question

我必须禁用右键单击 JTableHeader，这样用户就不能右键单击列标题并拖动以重新定位列。我们有什么技巧可以做到这一点吗？只是提到鼠标左键单击效果很好，但是当用户使用 RMB 并拖动列时，该列会移动并在释放鼠标时重新绘制在其他列上。

感谢任何帮助。

Answer 1

使用右键触发列拖动/调整大小显然是 IMO 的错误。

一个古怪的解决方法是挂接到 uidelegate 安装的鼠标/Motion/Listener 并默默地吃掉所有不是左键的事件。类似的东西(注意:这个包装监听器的更健壮的安装可以在 LAF 开关中存活下来是 outlined in a recent answer ):

public static class BugHook implements MouseListener, MouseMotionListener {

    private JTableHeader header;
    private MouseListener mouseDelegate;
    private MouseMotionListener motionDelegate;

    public BugHook(JTableHeader header) {
        this.header = header;
        MouseListener[] ls = header.getMouseListeners();
        for (int i = 0; i < ls.length; i++) {
            header.removeMouseListener(ls[i]);
            String name = ls[i].getClass().getName();
            if (name.contains("TableHeaderUI")) {
                this.mouseDelegate = ls[i];
                ls[i] = this;
            }
        }
        for (MouseListener l : ls) {
            header.addMouseListener(l);
        }

        MouseMotionListener[] motionLs = header.getMouseMotionListeners();
        for (int i = 0; i < motionLs.length; i++) {
            header.removeMouseMotionListener(motionLs[i]);
            String name = motionLs[i].getClass().getName();
            if (name.contains("TableHeaderUI")) {
                this.motionDelegate = motionLs[i];
                motionLs[i] = this;
            }
        }
        for (MouseMotionListener l : motionLs) {
            header.addMouseMotionListener(l);
        }

    }

    // methods delegation left buttons only
    @Override
    public void mousePressed(MouseEvent e) {
        if (!SwingUtilities.isLeftMouseButton(e)) return;
        mouseDelegate.mousePressed(e);
    }

    @Override
    public void mouseDragged(MouseEvent e) {
        if (!SwingUtilities.isLeftMouseButton(e)) return;
        motionDelegate.mouseDragged(e);
    }
    @Override
    public void mouseReleased(MouseEvent e) {
        if (!SwingUtilities.isLeftMouseButton(e)) return;
        mouseDelegate.mouseReleased(e);
    }

    /// ---------- methods delegating always
    @Override
    public void mouseClicked(MouseEvent e) {
        mouseDelegate.mouseClicked(e);
    }
    @Override
    public void mouseEntered(MouseEvent e) {
        mouseDelegate.mouseEntered(e);
    }

    @Override
    public void mouseExited(MouseEvent e) {
        mouseDelegate.mouseExited(e);
    }
    @Override
    public void mouseMoved(MouseEvent e) {
        motionDelegate.mouseMoved(e);
    }

}