Question

我必须禁用右键单击JTableHeader，以便用户无法右键单击列标题并拖动以重新定位列。我们有任何诀窍吗？只需要提一下鼠标左键单击效果很好但是当用户使用RMB并拖动列时，移动该列并在释放鼠标时重新绘制其他列。

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。

一个糟糕的解决方法是挂钩由uidelegate安装的鼠标/动作/监听器，并静静地吃掉所有不是左按钮的事件。类似的事情（注意：这个包装监听器的更健壮的安装将在LAF切换后继续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);
    }

}

Answer 2

我尝试使用Java版本1.7.0_11和1.6.0_38并执行此操作：

table.getTableHeader().setReorderingAllowed(false);

会将列锁定到位。您是使用较旧的Java版本还是以其他方式禁用？

重新定位Jtable列标题

2 个答案: