调整jpanel上的图标和卡布局

时间:2014-04-03 18:09:29

标签: java swing

我正在尝试创建一个应用程序,其中列出的数字列在WEST BorderLayout区域CENTERWEST中的相应面板上。问题是

  • 我需要JList区域更宽。现在,它在JPanel中包含import java.awt.BorderLayout; import java.awt.CardLayout; import java.awt.EventQueue; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.util.Vector; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JList; import javax.swing.JPanel; import javax.swing.border.EmptyBorder; import javax.swing.border.MatteBorder; import java.awt.Color; public class Sample1 extends JFrame { private JPanel contentPane; /** * Launch the application. */ public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { public void run() { try { Sample1 frame = new Sample1(); frame.setVisible(true); } catch (Exception e) { e.printStackTrace(); } } }); } /** * Create the frame. */ public Sample1() { setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setBounds(100, 100, 450, 300); contentPane = new JPanel(); contentPane.setBorder(new EmptyBorder(5, 5, 5, 5)); contentPane.setLayout(new BorderLayout(0, 0)); setContentPane(contentPane); JPanel panel = new JPanel(); panel.setBorder(new MatteBorder(1, 1, 1, 1, (Color) new Color(0, 0, 0))); contentPane.add(panel, BorderLayout.WEST); Vector<String> str = new Vector<>(); str.add("1"); str.add("2"); final JList list = new JList(); list.setListData(str); panel.add(list); final JPanel panel_1 = new JPanel(); panel_1.setBorder(new MatteBorder(1, 1, 1, 1, (Color) new Color(0, 0, 0))); contentPane.add(panel_1, BorderLayout.CENTER); panel_1.setLayout(new CardLayout(0, 0)); JPanel panel_2 = new JPanel(); panel_1.add(panel_2, "1"); JLabel lblNewLabel = new JLabel("First"); panel_2.add(lblNewLabel); JPanel panel_3 = new JPanel(); panel_1.add(panel_3, "2"); JLabel lblNewLabel_1 = new JLabel("Second"); panel_3.add(lblNewLabel_1); list.addMouseListener(new MouseAdapter() { @Override public void mouseClicked(MouseEvent e){ CardLayout layout = (CardLayout) panel_1.getLayout(); layout.show(panel_1, list.getSelectedValue().toString()); } }); } } ,并将其大小调整为默认大小。首选尺寸?不确定!
  • 我需要在1或2的右端有一个图标或字母'x'。所以,当我关闭它时,我可以关闭CENTER上的相应面板。

CODE:

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2 个答案:

答案 0 :(得分:1)

也许使用带有两列的JTable。第二列可以包含关闭按钮。有关此方法的示例,请参阅Table Button Column

否则你需要在WEST中添加一个面板。该面板将包含JList和JList旁边的一些其他组件,以充当关闭按钮。这种方法的问题是让组件排成一行,按钮知道要关闭哪个面板。

答案 1 :(得分:0)

您是否尝试使用GridLayoutBoxLayout尝试使用单独的方法设置GUI。

设置GUI代码:

private void setupGUI() {
        JPanel westP = setupWestPane();

        getContentPane().add(westPa, BorderLayout.WEST);          
    }

设置West Pane代码:

private JPanel setupWestPane() {
    JPanel westP = setupWestPanel();


    JPanel p = new JPanel(new GridLayout(1, 2, 20, 0));
    p.setOpaque(false);
    p.add(westP);
    return p;
}

设置West Panel代码:

private JPanel setupPlayerPanel() {
        list1 = new JList();
        list1.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

        // If you want to add a listener to the listbox
        // list1.addListSelectionListener(this);
        JScrollPane jsp = new JScrollPane(playerList);

        JPanel p = new JPanel(new BorderLayout());
        p.setOpaque(false);
        p.add(new JLabel("List"), BorderLayout.NORTH);
        p.add(jsp, BorderLayout.CENTER);

        return p;
    }

上面的代码只是一个例子。