JTable上的JPopupMenu - >获取创建菜单的单元格 [英] JPopupMenu on JTable -> Get the cell the menu was created on

问题描述

我有一种情况，我在右键单击JTable时创建了一个弹出菜单。创建弹出菜单的标准方法：

I have a situation where I have a popup menu created when a JTable is right clicked on. Standard way of creating the popup menu:

aJTable.setComponentPopupMenu(rightClickMenu);

现在，在注册的操作中，我无法找到右键单击的单元格让弹出菜单出现。

Now afterwards in the action that gets registered, I am unable to find out which cell was right clicked on to get that popup menu to appear.

rightClickMenuItem.addActionListener(new AbstractAction() {
    @Override
    public void actionPerformed(ActionEvent e) {
        // Work out what cell was right clicked to generate the menu
    }

});

关于你如何做的任何想法？

Any ideas on how you do this?

推荐答案

@MadProgrammer对getPopupLocation的建议看起来很有希望，但我无法弄清楚如何在表和actionEvent之间获取信息......

@MadProgrammer's suggestion of getPopupLocation looked promising, but I couldn't work out how to get the information across between the table and the actionEvent...

我通过确保在右键单击时选择了行来解决这个问题 - >因为弹出菜单阻止了行的选择，你可以添加一个鼠标监听器来确保行获得无论点击什么（左或右）都被选中。

I got around this by making sure that the row was selected when you rightclicked on it -> since the popup menu prevents the selection of the row, you can add in a mouse listener that makes sure the row gets selected no matter what click (left or right) is pressed.

aTable.addMouseListener(new MouseAdapter() {
    @Override
    public void mousePressed(MouseEvent e) {
        int r = aTable.rowAtPoint(e.getPoint());
        if (r >= 0 && r < clt.getRowCount()) {
            aTable.setRowSelectionInterval(r, r);
        } else {
            aTable.clearSelection();
        }
    }
});

这意味着在rightClickMenuItem的动作侦听器中，您可以获取表格的选定单元格/行

This means that in the rightClickMenuItem's action listener, you can grab the table's selected cell / row

rightClickMenuItem.addActionListener(new AbstractAction() {
    @Override
    public void actionPerformed(ActionEvent e) {
        aTable.get details about the selected one....
    }
});

太简单了！谢谢大家的帮助。

Too easy! Thanks everyone for the help.

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