从JFileChooser打开按钮关闭上一个窗口

Question

我正在创建一个文件打开向导，并从初始窗口的浏览按钮打开JFileChooser。我目前设置它，以便浏览按钮处理第一个窗口并同时打开JFileChooser窗口。我希望在用户选择了他们的文件之后处理窗口，以防他们想要取消并返回初始窗口 - 目前这是不可能的。

以下是相关代码：

class BrowseButton extends JButton {

    public BrowseButton(String name, final JPanel pane) {

        super(name);
        addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent event) {
                JFileChooser fileopen = new JFileChooser();             
                FileFilter filter = new FileNameExtensionFilter("dwg files", "dwg");
                fileopen.addChoosableFileFilter(filter);

                int ret = fileopen.showDialog(pane, "Open");

                if (ret == JFileChooser.APPROVE_OPTION) {
                    File file = fileopen.getSelectedFile();
                    String[] layers = getFileLayers(file.getPath());
                    openLayerWindow(layers);
                }

            }
        });
        addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent event) {
                dispose();
            }
        });
    }

当按钮被实例化时......

//Bottom Panel
    final JPanel bottom = new JPanel(new FlowLayout(FlowLayout.RIGHT));

    BrowseButton browse = new BrowseButton("Browse...", bottom);
    browse.setMnemonic(KeyEvent.VK_B);
    CloseButton close = new CloseButton("Close");
    close.setMnemonic(KeyEvent.VK_C);

    bottom.add(close);
    bottom.add(browse);
    basic.add(bottom);

Answer 1

您可以利用SwingUtilities.getWindowAncestor检索BrowseButton的包含窗口，并仅在用户选择APPROVE_OPTION时将其处置。

class BrowseButton extends JButton {

    public BrowseButton(String name, final JPanel pane) {

        super(name);
        addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent event) {
                JFileChooser fileopen = new JFileChooser();             
                FileFilter filter = new FileNameExtensionFilter("dwg files", "dwg");
                fileopen.addChoosableFileFilter(filter);

                int ret = fileopen.showDialog(pane, "Open");

                if (ret == JFileChooser.APPROVE_OPTION) {
                    SwingUtilities.getWindowAncestor(BrowsButton.this).dispose();
                    File file = fileopen.getSelectedFile();
                    String[] layers = getFileLayers(file.getPath());
                    openLayerWindow(layers);
                }

            }
        });
    }