java source code of ExportDialog

package com.fangxuele.tool.push.ui.dialog;

import com.fangxuele.tool.push.App;
import com.fangxuele.tool.push.util.ComponentUtil;
import com.intellij.uiDesigner.core.GridConstraints;
import com.intellij.uiDesigner.core.GridLayoutManager;
import com.intellij.uiDesigner.core.Spacer;
import lombok.Getter;

import javax.swing.*;
import java.awt.*;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

/**
 * <pre>
 * ExportDialog
 * </pre>
 *
 * @author <a href="https://github.com/rememberber">RememBerBer</a>
 * @since 2019/7/20.
 */
@Getter
public class ExportDialog extends JDialog {
    private JPanel contentPane;
    private JButton buttonOK;
    private JButton buttonCancel;
    private JRadioButton excelRadioButton;
    private JRadioButton csvRadioButton;
    private JRadioButton txtRadioButton;

    private static ExportDialog exportDialog;

    public static boolean confirm;

    public static int fileType;

    public static final int EXCEL = 1;
    public static final int CSV = 2;
    public static final int TXT = 3;

    public ExportDialog() {
        super(App.mainFrame, "请选择");
        setContentPane(contentPane);
        setModal(true);
        getRootPane().setDefaultButton(buttonOK);

        ComponentUtil.setPreferSizeAndLocateToCenter(this, 420, 300);

        buttonOK.addActionListener(e -> onOK());

        buttonCancel.addActionListener(e -> onCancel());

        // call onCancel() when cross is clicked
        setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);
        addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                onCancel();
            }
        });

        // call onCancel() on ESCAPE
        contentPane.registerKeyboardAction(e -> onCancel(), KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0), JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
        excelRadioButton.addActionListener(e -> {
            unSelectAll();
            excelRadioButton.setSelected(true);
            fileType = EXCEL;
        });
        csvRadioButton.addActionListener(e -> {
            unSelectAll();
            csvRadioButton.setSelected(true);
            fileType = CSV;
        });
        txtRadioButton.addActionListener(e -> {
            unSelectAll();
            txtRadioButton.setSelected(true);
            fileType = TXT;
        });
    }

    private void onOK() {
        confirm = true;
        dispose();
    }

    private void onCancel() {
        confirm = false;
        dispose();
    }

    public static ExportDialog getInstance() {
        if (exportDialog == null) {
            exportDialog = new ExportDialog();
        }
        return exportDialog;
    }

    public static void showDialog() {
        ExportDialog exportDialog = getInstance();
        exportDialog.unSelectAll();
        exportDialog.excelRadioButton.setSelected(true);
        fileType = EXCEL;
        exportDialog.pack();
        exportDialog.setVisible(true);
    }

    private void unSelectAll() {
        excelRadioButton.setSelected(false);
        csvRadioButton.setSelected(false);
        txtRadioButton.setSelected(false);
    }

    {
// GUI initializer generated by IntelliJ IDEA GUI Designer
// >>> IMPORTANT!! <<<
// DO NOT EDIT OR ADD ANY CODE HERE!
        $$$setupUI$$$();
    }

    /**
     * Method generated by IntelliJ IDEA GUI Designer
     * >>> IMPORTANT!! <<<
     * DO NOT edit this method OR call it in your code!
     *
     * @noinspection ALL
     */
    private void $$$setupUI$$$() {
        contentPane = new JPanel();
        contentPane.setLayout(new GridLayoutManager(5, 1, new Insets(10, 10, 10, 10), -1, -1));
        final JPanel panel1 = new JPanel();
        panel1.setLayout(new GridLayoutManager(1, 2, new Insets(0, 0, 0, 0), -1, -1));
        contentPane.add(panel1, new GridConstraints(4, 0, 1, 1, GridConstraints.ANCHOR_CENTER, GridConstraints.FILL_BOTH, GridConstraints.SIZEPOLICY_CAN_SHRINK | GridConstraints.SIZEPOLICY_CAN_GROW, 1, null, null, null, 0, false));
        final Spacer spacer1 = new Spacer();
        panel1.add(spacer1, new GridConstraints(0, 0, 1, 1, GridConstraints.ANCHOR_CENTER, GridConstraints.FILL_HORIZONTAL, GridConstraints.SIZEPOLICY_WANT_GROW, 1, null, null, null, 0, false));
        final JPanel panel2 = new JPanel();
        panel2.setLayout(new GridLayoutManager(1, 2, new Insets(0, 0, 0, 0), -1, -1, true, false));
        panel1.add(panel2, new GridConstraints(0, 1, 1, 1, GridConstraints.ANCHOR_CENTER, GridConstraints.FILL_BOTH, GridConstraints.SIZEPOLICY_CAN_SHRINK | GridConstraints.SIZEPOLICY_CAN_GROW, GridConstraints.SIZEPOLICY_CAN_SHRINK | GridConstraints.SIZEPOLICY_CAN_GROW, null, null, null, 0, false));
        buttonOK = new JButton();
        buttonOK.setText("确定");
        panel2.add(buttonOK, new GridConstraints(0, 0, 1, 1, GridConstraints.ANCHOR_CENTER, GridConstraints.FILL_HORIZONTAL, GridConstraints.SIZEPOLICY_CAN_SHRINK | GridConstraints.SIZEPOLICY_CAN_GROW, GridConstraints.SIZEPOLICY_FIXED, null, null, null, 0, false));
        buttonCancel = new JButton();
        buttonCancel.setText("取消");
        panel2.add(buttonCancel, new GridConstraints(0, 1, 1, 1, GridConstraints.ANCHOR_CENTER, GridConstraints.FILL_HORIZONTAL, GridConstraints.SIZEPOLICY_CAN_SHRINK | GridConstraints.SIZEPOLICY_CAN_GROW, GridConstraints.SIZEPOLICY_FIXED, null, null, null, 0, false));
        final JPanel panel3 = new JPanel();
        panel3.setLayout(new GridLayoutManager(3, 1, new Insets(0, 0, 0, 0), -1, -1));
        contentPane.add(panel3, new GridConstraints(2, 0, 1, 1, GridConstraints.ANCHOR_CENTER, GridConstraints.FILL_BOTH, GridConstraints.SIZEPOLICY_CAN_SHRINK | GridConstraints.SIZEPOLICY_CAN_GROW, GridConstraints.SIZEPOLICY_CAN_SHRINK | GridConstraints.SIZEPOLICY_CAN_GROW, null, null, null, 0, false));
        excelRadioButton = new JRadioButton();
        excelRadioButton.setText("Excel");
        panel3.add(excelRadioButton, new GridConstraints(0, 0, 1, 1, GridConstraints.ANCHOR_WEST, GridConstraints.FILL_NONE, GridConstraints.SIZEPOLICY_CAN_SHRINK | GridConstraints.SIZEPOLICY_CAN_GROW, GridConstraints.SIZEPOLICY_FIXED, null, null, null, 0, false));
        csvRadioButton = new JRadioButton();
        csvRadioButton.setText("CSV");
        panel3.add(csvRadioButton, new GridConstraints(1, 0, 1, 1, GridConstraints.ANCHOR_WEST, GridConstraints.FILL_NONE, GridConstraints.SIZEPOLICY_CAN_SHRINK | GridConstraints.SIZEPOLICY_CAN_GROW, GridConstraints.SIZEPOLICY_FIXED, null, null, null, 0, false));
        txtRadioButton = new JRadioButton();
        txtRadioButton.setText("TXT");
        panel3.add(txtRadioButton, new GridConstraints(2, 0, 1, 1, GridConstraints.ANCHOR_WEST, GridConstraints.FILL_NONE, GridConstraints.SIZEPOLICY_CAN_SHRINK | GridConstraints.SIZEPOLICY_CAN_GROW, GridConstraints.SIZEPOLICY_FIXED, null, null, null, 0, false));
        final Spacer spacer2 = new Spacer();
        contentPane.add(spacer2, new GridConstraints(0, 0, 1, 1, GridConstraints.ANCHOR_CENTER, GridConstraints.FILL_VERTICAL, 1, GridConstraints.SIZEPOLICY_WANT_GROW, null, null, null, 0, false));
        final Spacer spacer3 = new Spacer();
        contentPane.add(spacer3, new GridConstraints(3, 0, 1, 1, GridConstraints.ANCHOR_CENTER, GridConstraints.FILL_VERTICAL, 1, GridConstraints.SIZEPOLICY_WANT_GROW, null, null, null, 0, false));
        final JLabel label1 = new JLabel();
        label1.setText("导出文件类型：");
        contentPane.add(label1, new GridConstraints(1, 0, 1, 1, GridConstraints.ANCHOR_WEST, GridConstraints.FILL_NONE, GridConstraints.SIZEPOLICY_FIXED, GridConstraints.SIZEPOLICY_FIXED, null, null, null, 0, false));
    }

    /**
     * @noinspection ALL
     */
    public JComponent $$$getRootComponent$$$() {
        return contentPane;
    }

}