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java - 打开设计模式

问题描述

我有旧的 JavaNetBenas项目，其中包含从JPanel. 代码编辑器在这些类中不包含Design按钮。Design按钮仅出现在新创建的JPanel fom. 是否有可能以某种方式告诉NetBeans以Design模式打开旧表单？

无法在Design模式下打开的表单：

public class About extends javax.swing.JPanel /*JFrame*/ {
    private ClassLoader cl = getClass().getClassLoader();
    public ImageIcon logo = new ImageIcon(
            cl.getResource("icons/logo.gif"));
    public ImageIcon ball = new ImageIcon(
            cl.getResource("icons/ball.gif"));

    private JPanel centerPanel;
    private JPanel topPanel;

    private JLabel productName = new JLabel("<html><font face=\"verdana\" size=10>"+
            "SocketTest",logo,JLabel.CENTER);
    private JTextArea readme = new JTextArea();
    private JScrollPane jsp;

    String html="<html><font face=\"verdana\" size=\"2\">";

    private JLabel versionText = new JLabel(html+"Version",ball,JLabel.LEFT);
    private JLabel version = new JLabel(html+": 3.0.0", JLabel.LEFT);

    private JLabel licenceText = new JLabel(html+"Licence",ball,JLabel.LEFT);
    private JLabel licence = new JLabel(html+": GNU Lesser General Public License", JLabel.LEFT);

    private JLabel authorText = new JLabel(html+"Author",ball,JLabel.LEFT);
    private JLabel author = new JLabel(html+": Akshathkumar Shetty", JLabel.LEFT);

    private JLabel copyrightText = new JLabel(html+"Copyright &copy; 2003-2008 Akshathkumar Shetty",ball,JLabel.LEFT);

    private JLabel websiteText = new JLabel(html+"Website",ball,JLabel.LEFT);
    private JLabel website = new JLabel(html+": http://sockettest.sourceforge.net/", JLabel.LEFT);

    private JLabel readmeText = new JLabel(html+"ReadMe",ball,JLabel.LEFT);

    private GridBagConstraints gbc = new GridBagConstraints();

    /** Creates a new instance of About */
    public About() {
        //Container cp = getContentPane();
        Container cp = this;

        topPanel = new JPanel();
        topPanel.setLayout(new GridBagLayout());
        gbc.insets = new Insets( 2, 2, 2, 2 );
        gbc.weighty = 0.0;
        gbc.weightx = 0.0;
        gbc.gridx = 0;
        gbc.gridy = 0;
        gbc.gridheight = 1;
        gbc.gridwidth = 3;
        gbc.anchor = GridBagConstraints.CENTER;
        gbc.fill = GridBagConstraints.NONE;
        topPanel.add(productName, gbc);

        gbc.anchor = GridBagConstraints.WEST;
        gbc.fill = GridBagConstraints.HORIZONTAL;

        gbc.gridy = 1;
        gbc.gridx = 0;
        gbc.weightx = 0.0;
        topPanel.add(versionText, gbc);
        gbc.gridx = 1;
        topPanel.add(version, gbc);
        gbc.gridx = 2;
        gbc.weightx = 1.0;
        gbc.fill = GridBagConstraints.HORIZONTAL;
        topPanel.add(Box.createHorizontalGlue(), gbc);

        gbc.gridy = 2;
        gbc.gridx = 0;
        gbc.weightx = 0.0;
        topPanel.add(licenceText, gbc);
        gbc.gridx = 1;
        topPanel.add(licence, gbc);
        gbc.gridx = 2;
        gbc.weightx = 1.0;//1.0
        gbc.fill = GridBagConstraints.HORIZONTAL;
        topPanel.add(new JLabel(), gbc);

        gbc.gridy = 3;
        gbc.gridx = 0;
        gbc.weightx = 0.0;
        topPanel.add(authorText, gbc);
        gbc.gridx = 1;
        topPanel.add(author, gbc);
        gbc.gridx = 2;
        gbc.weightx = 1.0;
        gbc.fill = GridBagConstraints.HORIZONTAL;
        topPanel.add(Box.createHorizontalGlue(), gbc);

        gbc.gridy = 4;
        gbc.gridx = 0;
        gbc.weightx = 0.0;
        topPanel.add(websiteText, gbc);
        gbc.gridx = 1;
        topPanel.add(website, gbc);
        gbc.gridx = 2;
        gbc.weightx = 1.0;
        gbc.fill = GridBagConstraints.HORIZONTAL;
        topPanel.add(Box.createHorizontalGlue(), gbc);

        gbc.gridy = 5;
        gbc.gridx = 0;
        gbc.weightx = 0.0;
        gbc.gridwidth = 2;
        topPanel.add(copyrightText, gbc);
        gbc.gridwidth = 1;
        gbc.gridx = 2;
        gbc.weightx = 1.0;
        gbc.fill = GridBagConstraints.HORIZONTAL;
        topPanel.add(Box.createHorizontalGlue(), gbc);

        gbc.gridy = 6;
        gbc.gridx = 0;
        gbc.weightx = 0.0;
        gbc.gridwidth = 1;
        topPanel.add(readmeText, gbc);
        gbc.gridx = 1;
        topPanel.add(new JLabel(" "), gbc);
        gbc.gridx = 2;
        gbc.weightx = 1.0;
        gbc.fill = GridBagConstraints.HORIZONTAL;
        topPanel.add(Box.createHorizontalGlue(), gbc);


        centerPanel = new JPanel();
        readme.setText("Loading... readme");
        try {
            String cont = Util.readFile("readme.txt",(Object)About.this);
            readme.setText(cont);
        } catch (IOException e){
            System.err.println("Error reading readme.txt "+e);
            readme.append("\r\nFailed : "+e.getMessage());
        }
        readme.setEditable(false);
        readme.setLineWrap(true);
        readme.setWrapStyleWord(true);
        jsp = new JScrollPane(readme);
        centerPanel.setLayout(new BorderLayout());
        centerPanel.add(jsp);
        centerPanel.setBorder(BorderFactory.createEmptyBorder(0,9,0,9));

        cp.setLayout(new BorderLayout(0,10));
        cp.add(topPanel,BorderLayout.NORTH);
        cp.add(centerPanel,BorderLayout.CENTER);
        setBorder(BorderFactory.createEmptyBorder(10,10,10,10));
    }

}

标签： javaswingnetbeans

解决方案

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