ボタンがポップアップしないようにするにはどうすればいいですか？

Question

私はJavaスイングブラウザでアコーディオンパネルを作ろうとしています。パネルにいくつかのボタンを追加しました。ここ は私のコード（私はあなたが私のコードを理解するすべての問題に直面している場合、それは小さく、私に知らせてください作るためのコードからいくつかのボタンを削除しました）

public class AccordianTest { 

JPanel getContent() { 
    JPanel panel = new JPanel(new GridBagLayout()); 
    GridBagConstraints gbc = new GridBagConstraints(); 
    panel.add(new AccordianPanel().getPanel(), gbc); 
    panel.setBackground(Color.DARK_GRAY); 
    panel.setVisible(true); 
    return panel; 
} 
} 

class AccordianPanel extends JPanel { 

boolean movingComponents = false; 
int visibleIndex = 3; 

public AccordianPanel() { 
    setLayout(null); 
    int childCount = 4; 
    Dimension d = new Dimension(); 
    int h = 0; 
    String[] name = {"Navigation", "Settings", "New tab", "More Tools"}; 
    for (int j = 0; j < childCount; j++) { 
     ChildPanel child = new ChildPanel(j + 1, ml, name[j]); 
     add(child); 
     d = child.getPreferredSize(); 
     child.setBounds(0, h, d.width, d.height); 
     if (j < childCount - 1) { 
      h += ControlPanel.HEIGHT; 
     } 
    } 
    h += d.height; 
    setPreferredSize(new Dimension(d.width, h)); 
    // Set z-order for children. 
    setZOrder(); 
} 

private void setZOrder() { 
    Component[] c = getComponents(); 
    for (int j = 0; j < c.length - 1; j++) { 
     setComponentZOrder(c[j], c.length - 1 - j); 
    } 
} 

private void setChildVisible(int indexToOpen) { 
    int[] indices = new int[0]; 
    int travelLimit = 0; 
    if (visibleIndex < indexToOpen) { 
     travelLimit = ControlPanel.HEIGHT 
       - getComponent(visibleIndex).getHeight(); 
     int n = indexToOpen - visibleIndex; 
     indices = new int[n]; 
     for (int j = visibleIndex, k = 0; j < indexToOpen; j++, k++) { 
      indices[k] = j + 1; 
     } 
    } else if (visibleIndex > indexToOpen) { 
     travelLimit = getComponent(visibleIndex).getHeight() 
       - ControlPanel.HEIGHT; 
     int n = visibleIndex - indexToOpen; 
     indices = new int[n]; 
     for (int j = indexToOpen, k = 0; j < visibleIndex; j++, k++) { 
      indices[k] = j + 1; 
     } 
    } 
    movePanels(indices, travelLimit); 
    visibleIndex = indexToOpen; 
} 

private void movePanels(final int[] indices, final int travel) { 
    movingComponents = true; 
    Thread thread = new Thread(new Runnable() { 
     public void run() { 
      Component[] c = getComponents(); 
      int limit = travel > 0 ? travel : 0; 
      int count = travel > 0 ? 0 : travel; 
      int dy = travel > 0 ? 1 : -1; 
      while (count < limit) { 
       try { 
        Thread.sleep(5); 
       } catch (InterruptedException e) { 
        System.out.println("interrupted"); 
        break; 
       } 
       for (int j = 0; j < indices.length; j++) { 
        int index = c.length - 1 - indices[j]; 
        Point p = c[index].getLocation(); 
        p.y += dy; 
        c[index].setLocation(p.x, p.y); 
       } 
       repaint(); 
       count++; 
      } 
      movingComponents = false; 
     } 
    }); 
    thread.setPriority(Thread.NORM_PRIORITY); 
    thread.start(); 
} 

private MouseListener ml = new MouseAdapter() { 
    public void mousePressed(MouseEvent e) { 
     int index = ((ControlPanel) e.getSource()).id - 1; 
     if (!movingComponents) { 
      setChildVisible(index); 
     } 
    } 
}; 

public JPanel getPanel() { 
    JPanel panel = new JPanel(new GridBagLayout()); 
    GridBagConstraints gbc = new GridBagConstraints(); 
    panel.add(this, gbc); 
    return panel; 
} 
} 

class ChildPanel extends JPanel { 

public ChildPanel(int id, MouseListener ml, String name) { 
    setLayout(new BorderLayout()); 
    add(new ControlPanel(id, ml, name), "First"); 
    add(getContent(id)); 
} 

private JPanel getContent(int id) { 
    JPanel panel = new JPanel(new GridBagLayout()); 
    GridBagConstraints gbc = new GridBagConstraints(); 
    gbc.insets = new Insets(1, 1, 1, 1); 
    gbc.weightx = 0.5; 
    gbc.weighty = 0; 
    gbc.gridx = 0; 
    gbc.gridy = 0; 
    gbc.gridheight = 1; 
    gbc.anchor = gbc.PAGE_START; 
    gbc.fill = GridBagConstraints.HORIZONTAL; 
    if (id == 1) { 
     JButton hbutton = new JButton("Home"); 
     hbutton.setIcon(new ImageIcon(Hello.class.getResource("/rsz_1rsz_house.png"))); 
     hbutton.setToolTipText("Click to go home"); 
     hbutton.setPreferredSize(new Dimension(150, 25)); 
     hbutton.setBackground(Color.decode("#B29A99")); 
     panel.add(hbutton, gbc); 
     JButton hisbutton = new JButton("History"); 
     hisbutton.setIcon(new ImageIcon(Hello.class.getResource("/rsz_1rsz_25011.png"))); 
     hisbutton.setToolTipText("Browse previous pages"); 
     hisbutton.setPreferredSize(new Dimension(150, 25)); 
     hisbutton.setBackground(Color.decode("#B29A99")); 
     gbc.insets = new Insets(1, 1, 1, 1); 
     gbc.fill = GridBagConstraints.HORIZONTAL; 
     gbc.weightx = 0.0; 
     gbc.gridheight = 1; 
     gbc.gridx = 0; 
     gbc.gridy = 1; 
     panel.add(hisbutton, gbc); 

    } 
    else if (id == 2) { 
     gbc.anchor = gbc.PAGE_START; 
     JButton zbutton = new JButton("Zoom"); 
     zbutton.setIcon(new ImageIcon(Hello.class.getResource("/rsz_rsz_2fontsize.png"))); 
     zbutton.setToolTipText("Click to get better view"); 
     zbutton.setPreferredSize(new Dimension(150, 15)); 
     zbutton.setBackground(Color.decode("#B29A99")); 
     panel.add(zbutton, gbc); 
     JSlider slider = new JSlider(); 
     slider.setBackground(Color.DARK_GRAY); 
     gbc.insets = new Insets(4, 4, 4, 4); 
     gbc.fill = GridBagConstraints.HORIZONTAL; 
     gbc.weightx = 0.0; 
     gbc.gridheight = 1; 
     gbc.gridx = 0; 
     gbc.gridy = 1; 
     panel.add(slider,gbc); 
    } 
    else if (id==3) 
    { 
     JButton hbutton = new JButton("New Page"); 
     hbutton.setIcon(new ImageIcon(Hello.class.getResource("/rsz_download_4.jpg"))); 
     hbutton.setToolTipText("Start with new page"); 
     hbutton.setPreferredSize(new Dimension(150, 25)); 
     hbutton.setBackground(Color.decode("#B29A99")); 
     panel.add(hbutton, gbc); 
    } 
    else { 
     JButton hbutton = new JButton("Copy"); 
     hbutton.setIcon(new ImageIcon(Hello.class.getResource("/rsz_file_copy.png"))); 
     hbutton.setToolTipText("Copy"); 
     hbutton.setPreferredSize(new Dimension(150, 25)); 
     hbutton.setBackground(Color.decode("#B29A99")); 
     panel.add(hbutton, gbc); 
    } 
    panel.setBackground(Color.DARK_GRAY); 
    return panel; 
} 

public Dimension getPreferredSize() { 
    return new Dimension(150, 150); 
} 
} 

class ControlPanel extends JPanel { 

int id; 
JLabel titleLabel; 
Color c1 = new Color(51,3,0); 
Color c2 = new Color(153, 129, 127); 
Color fontFg = Color.BLACK; 
Color rolloverFg = new Color(206, 157, 157); 
public final static int HEIGHT = 40; 

public ControlPanel(int id, MouseListener ml, String name) { 
    this.id = id; 
    //setLayout(new BorderLayout()); 
    add(titleLabel = new JLabel(name)); 
    titleLabel.setForeground(fontFg); 
    Dimension d = getPreferredSize(); 
    d.height = HEIGHT; 
    setPreferredSize(d); 
    addMouseListener(ml); 
    addMouseListener(listener); 
} 

protected void paintComponent(Graphics g) { 
    int w = getWidth(); 
    Graphics2D g2 = (Graphics2D) g; 
    g2.setPaint(new GradientPaint(w/2, 0, c1, w/2, HEIGHT/2, c2)); 
    g2.fillRect(0, 0, w, HEIGHT); 
} 

private MouseListener listener = new MouseAdapter() { 
    public void mouseEntered(MouseEvent e) { 
     titleLabel.setForeground(rolloverFg); 
    } 

    public void mouseExited(MouseEvent e) { 
     titleLabel.setForeground(fontFg); 
    } 
}; 
} 

ですが、私は自分のブラウザべきボタンを実行したときパネルの下に隠されたままの最初のパネルの別のパネルここ

「歴史」のボタン上に表示さ「ナビゲーション」私は第二パネル上の「設定」をクリックしたときに現れると「ズーム」を隠しますボタンを押します。私は何をすべきか ？

Answer 1

あなたはfalseを返すようにAccordianPanelのJComponent#isOptimizedDrawingEnabled()メソッドをオーバーライドすることができるかもしれません。このクラスにはないので、それが動作

class AccordianPanel extends JPanel { 
    boolean movingComponents = false; 
    int visibleIndex = 3; 
    public AccordianPanel() { 
    //... 
    } 
    @Override public boolean isOptimizedDrawingEnabled() { 
    return false; 
    } 

import java.awt.*; 
import java.awt.event.*; 
import java.util.List; 
import javax.swing.*; 

public class AccordianTest2 { 
    JPanel getContent() { 
    JPanel panel = new JPanel(new GridBagLayout()); 
    GridBagConstraints gbc = new GridBagConstraints(); 
    panel.add(new AccordianPanel().getPanel(), gbc); 
    panel.setBackground(Color.DARK_GRAY); 
    panel.setVisible(true); 
    return panel; 
    } 
    public static void main(String... args) { 
    EventQueue.invokeLater(() -> { 
     JFrame f = new JFrame(); 
     f.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); 
     f.getContentPane().add(new AccordianTest2().getContent()); 
     f.setSize(320, 480); 
     f.setLocationRelativeTo(null); 
     f.setVisible(true); 
    }); 
    } 
} 

class AccordianPanel extends JPanel { 
    boolean movingComponents = false; 
    int visibleIndex = 3; 

    public AccordianPanel() { 
    setLayout(null); 
    int childCount = 4; 
    Dimension d = new Dimension(); 
    int h = 0; 
    String[] name = {"Navigation", "Settings", "New tab", "More Tools"}; 
    for (int j = 0; j < childCount; j++) { 
     ChildPanel child = new ChildPanel(j + 1, ml, name[j]); 
     add(child); 
     d = child.getPreferredSize(); 
     child.setBounds(0, h, d.width, d.height); 
     if (j < childCount - 1) { 
     h += ControlPanel.HEIGHT; 
     } 
    } 
    h += d.height; 
    setPreferredSize(new Dimension(d.width, h)); 
    // Set z-order for children. 
    setZOrder(); 
    } 
    @Override public boolean isOptimizedDrawingEnabled() { 
    return false; 
    } 
    private void setZOrder() { 
    Component[] c = getComponents(); 
    for (int j = 0; j < c.length - 1; j++) { 
     setComponentZOrder(c[j], c.length - 1 - j); 
    } 
    } 

    private void setChildVisible(int indexToOpen) { 
    int[] indices = new int[0]; 
    int travelLimit = 0; 
    if (visibleIndex < indexToOpen) { 
     travelLimit = ControlPanel.HEIGHT 
        - getComponent(visibleIndex).getHeight(); 
     int n = indexToOpen - visibleIndex; 
     indices = new int[n]; 
     for (int j = visibleIndex, k = 0; j < indexToOpen; j++, k++) { 
     indices[k] = j + 1; 
     } 
    } else if (visibleIndex > indexToOpen) { 
     travelLimit = getComponent(visibleIndex).getHeight() 
        - ControlPanel.HEIGHT; 
     int n = visibleIndex - indexToOpen; 
     indices = new int[n]; 
     for (int j = indexToOpen, k = 0; j < visibleIndex; j++, k++) { 
     indices[k] = j + 1; 
     } 
    } 
    movePanels(indices, travelLimit); 
    visibleIndex = indexToOpen; 
    } 

    private void movePanels(final int[] indices, final int travel) { 
    movingComponents = true; 
    Thread thread = new Thread(new Runnable() { 
     public void run() { 
     Component[] c = getComponents(); 
     int limit = travel > 0 ? travel : 0; 
     int dy = travel > 0 ? 1 : -1; 

     (new SwingWorker<Void, Integer>() { 
      @Override public Void doInBackground() { 
      int count = travel > 0 ? 0 : travel; 
      while (count < limit) { 
       try { 
       Thread.sleep(5); 
       } catch (InterruptedException e) { 
       System.out.println("interrupted"); 
       break; 
       } 
       for (int j = 0; j < indices.length; j++) { 
       int index = c.length - 1 - indices[j]; 
       Point p = c[index].getLocation(); 
       p.y += dy; 
       c[index].setLocation(p.x, p.y); 
       } 
       publish(count++); 
      } 
      return null; 
      } 
      @Override protected void process(List<Integer> chunks) { 
      repaint(); 
      } 
      @Override public void done() { 
      movingComponents = false; 
      } 
     }).execute(); 
//   while (count < limit) { 
//   try { 
//    Thread.sleep(5); 
//   } catch (InterruptedException e) { 
//    System.out.println("interrupted"); 
//    break; 
//   } 
//   for (int j = 0; j < indices.length; j++) { 
//    int index = c.length - 1 - indices[j]; 
//    Point p = c[index].getLocation(); 
//    p.y += dy; 
//    c[index].setLocation(p.x, p.y); 
//   } 
//   repaint(); 
//   count++; 
//   } 
//   movingComponents = false; 
     } 
    }); 
    thread.setPriority(Thread.NORM_PRIORITY); 
    thread.start(); 
    } 

    private MouseListener ml = new MouseAdapter() { 
    public void mousePressed(MouseEvent e) { 
     int index = ((ControlPanel) e.getSource()).id - 1; 
     if (!movingComponents) { 
     setChildVisible(index); 
     } 
    } 
    }; 

    public JPanel getPanel() { 
    JPanel panel = new JPanel(new GridBagLayout()); 
    GridBagConstraints gbc = new GridBagConstraints(); 
    panel.add(this, gbc); 
    return panel; 
    } 
} 

class ChildPanel extends JPanel { 

    public ChildPanel(int id, MouseListener ml, String name) { 
    setLayout(new BorderLayout()); 
    add(new ControlPanel(id, ml, name), "First"); 
    add(getContent(id)); 
    } 

    private JPanel getContent(int id) { 
    JPanel panel = new JPanel(new GridBagLayout()); 
    GridBagConstraints gbc = new GridBagConstraints(); 
    gbc.insets = new Insets(1, 1, 1, 1); 
    gbc.weightx = 0.5; 
    gbc.weighty = 0; 
    gbc.gridx = 0; 
    gbc.gridy = 0; 
    gbc.gridheight = 1; 
    gbc.anchor = gbc.PAGE_START; 
    gbc.fill = GridBagConstraints.HORIZONTAL; 
    if (id == 1) { 
     JButton hbutton = new JButton("Home"); 
     //hbutton.setIcon(new ImageIcon(Hello.class.getResource("/rsz_1rsz_house.png"))); 
     hbutton.setToolTipText("Click to go home"); 
     hbutton.setPreferredSize(new Dimension(150, 25)); 
     hbutton.setBackground(Color.decode("#B29A99")); 
     panel.add(hbutton, gbc); 
     JButton hisbutton = new JButton("History"); 
     //hisbutton.setIcon(new ImageIcon(Hello.class.getResource("/rsz_1rsz_25011.png"))); 
     hisbutton.setToolTipText("Browse previous pages"); 
     hisbutton.setPreferredSize(new Dimension(150, 25)); 
     hisbutton.setBackground(Color.decode("#B29A99")); 
     gbc.insets = new Insets(1, 1, 1, 1); 
     gbc.fill = GridBagConstraints.HORIZONTAL; 
     gbc.weightx = 0.0; 
     gbc.gridheight = 1; 
     gbc.gridx = 0; 
     gbc.gridy = 1; 
     panel.add(hisbutton, gbc); 

    } else if (id == 2) { 
     gbc.anchor = gbc.PAGE_START; 
     JButton zbutton = new JButton("Zoom"); 
     //zbutton.setIcon(new ImageIcon(Hello.class.getResource("/rsz_rsz_2fontsize.png"))); 
     zbutton.setToolTipText("Click to get better view"); 
     zbutton.setPreferredSize(new Dimension(150, 15)); 
     zbutton.setBackground(Color.decode("#B29A99")); 
     panel.add(zbutton, gbc); 
     JSlider slider = new JSlider(); 
     slider.setBackground(Color.DARK_GRAY); 
     gbc.insets = new Insets(4, 4, 4, 4); 
     gbc.fill = GridBagConstraints.HORIZONTAL; 
     gbc.weightx = 0.0; 
     gbc.gridheight = 1; 
     gbc.gridx = 0; 
     gbc.gridy = 1; 
     panel.add(slider, gbc); 
    } else if (id == 3) { 
     JButton hbutton = new JButton("New Page"); 
     //hbutton.setIcon(new ImageIcon(Hello.class.getResource("/rsz_download_4.jpg"))); 
     hbutton.setToolTipText("Start with new page"); 
     hbutton.setPreferredSize(new Dimension(150, 25)); 
     hbutton.setBackground(Color.decode("#B29A99")); 
     panel.add(hbutton, gbc); 
    } else { 
     JButton hbutton = new JButton("Copy"); 
     //hbutton.setIcon(new ImageIcon(Hello.class.getResource("/rsz_file_copy.png"))); 
     hbutton.setToolTipText("Copy"); 
     hbutton.setPreferredSize(new Dimension(150, 25)); 
     hbutton.setBackground(Color.decode("#B29A99")); 
     panel.add(hbutton, gbc); 
    } 
    panel.setBackground(Color.DARK_GRAY); 
    return panel; 
    } 

    public Dimension getPreferredSize() { 
    return new Dimension(150, 150); 
    } 
} 

class ControlPanel extends JPanel { 

    int id; 
    JLabel titleLabel; 
    Color c1 = new Color(51, 3, 0); 
    Color c2 = new Color(153, 129, 127); 
    Color fontFg = Color.BLACK; 
    Color rolloverFg = new Color(206, 157, 157); 
    public final static int HEIGHT = 40; 

    public ControlPanel(int id, MouseListener ml, String name) { 
    this.id = id; 
    //setLayout(new BorderLayout()); 
    add(titleLabel = new JLabel(name)); 
    titleLabel.setForeground(fontFg); 
    Dimension d = getPreferredSize(); 
    d.height = HEIGHT; 
    setPreferredSize(d); 
    addMouseListener(ml); 
    addMouseListener(listener); 
    } 

    protected void paintComponent(Graphics g) { 
    int w = getWidth(); 
    Graphics2D g2 = (Graphics2D) g; 
    g2.setPaint(new GradientPaint(w/2, 0, c1, w/2, HEIGHT/2, c2)); 
    g2.fillRect(0, 0, w, HEIGHT); 
    } 

    private MouseListener listener = new MouseAdapter() { 
    public void mouseEntered(MouseEvent e) { 
     titleLabel.setForeground(rolloverFg); 
    } 

    public void mouseExited(MouseEvent e) { 
     titleLabel.setForeground(fontFg); 
    } 
    }; 
}