日历控件问题紧急求助！！！！！

Question

小弟写了一个日历控件（从网上下载后自己修改），有如下问题：
当我把该日历控件放在某一个UI界面上，使用该控件选择了某一个时间之后，如果需要点击同一个界面上的其他类型的Swing控件，必须点击两次才能激活该类型的Swing控件；而如果点击同一类型的另外一个日历控件，则不存在这样的问题
紧急求助！源代码如下：
import java.awt.*;
import java.awt.event.*;
import java.util.Calendar;
import java.text.SimpleDateFormat;
import javax.swing.*;
import javax.swing.event.PopupMenuListener;
import javax.swing.event.PopupMenuEvent;
import javax.swing.plaf.ComboBoxUI;
import javax.swing.plaf.basic.ComboPopup;
import javax.swing.plaf.metal.MetalComboBoxUI;
import javax.swing.border.Border;
import javax.swing.border.EtchedBorder;
import javax.swing.border.EmptyBorder;import com.sun.java.swing.plaf.motif.MotifComboBoxUI;
import com.sun.java.swing.plaf.windows.WindowsComboBoxUI;import javax.swing.JTextField;
import javax.swing.plaf.basic.BasicComboBoxUI;//////////////////////////////////////////////////////////////
public class DateComboBox
    extends JComboBox
{  protected SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");  public DateComboBox()
  {
    this.setEditable(true);
    JTextField textField = ( (JTextField)this.getEditor().getEditorComponent());
    textField.addKeyListener(new KeyAdapter()
    {
      public void keyReleased(KeyEvent e)
      {
        if (e.getKeyCode() == KeyEvent.VK_ENTER)
        {
          textFieldTransferFocus();
        }
      }
    });
    setSelectedItem(dateFormat.format(new java.util.Date()));
  }  public void textFieldTransferFocus()
  {
    ((JTextField)this.getEditor().getEditorComponent()).transferFocusDownCycle();
  }  public void setDateFormat(SimpleDateFormat dateFormat)
  {
    this.dateFormat = dateFormat;
  }  public void setSelectedItem(Object item)
  {
    removeAllItems(); 
    addItem(item);
    super.setSelectedItem(item);
  }  public void updateUI()
  {
    ComboBoxUI cui = (ComboBoxUI) UIManager.getUI(this);
    if (cui instanceof MetalComboBoxUI)
    {
      cui = new MetalDateComboBoxUI();
    }
    else if (cui instanceof MotifComboBoxUI)
    {
      cui = new MotifDateComboBoxUI();
    }
    else if (cui instanceof WindowsComboBoxUI)
    {
      cui = new WindowsDateComboBoxUI();
    }
    //实现水晶风格
    else if (cui instanceof com.birosoft.liquid.LiquidComboBoxUI)
    {
      cui = new LiquidDateComboBoxUI();
    }
    //实现简约风格
    else if (cui instanceof jane.ui.lf.jane.JaneComboBoxUI)
    {
      cui=new JaneComboBoxUI();
    }
    //实现艺术风格
    else if (cui instanceof napkin.NapkinComboBoxUI)
   {
     cui=new NapkinComboBoxUI();
   }
   //swing.addon.plaf.threeD.ThreeDLookAndFeel
   //实现3D风格
   else if (cui instanceof swing.addon.plaf.threeD.ThreeD_ComboBoxUI )
   {
     cui=new ThreeD_ComboBoxUI();
   }
   //实现gtk风格
   else if (cui instanceof org.gtk.java.swing.plaf.gtk.GtkComboBoxUI )
   {
     cui=new GtkComboBoxUI();
   }
   setUI(cui);
  }  // UI Inner classes -- one for each supported Look and Feel
  class MetalDateComboBoxUI
      extends MetalComboBoxUI
  {
    protected ComboPopup createPopup()
    {
      return new DatePopup(comboBox);
    }
  }  class WindowsDateComboBoxUI
      extends WindowsComboBoxUI
  {
    protected ComboPopup createPopup()
    {
      return new DatePopup(comboBox);
    }
  }  class MotifDateComboBoxUI
      extends MotifComboBoxUI
  {
    protected ComboPopup createPopup()
    {
      return new DatePopup(comboBox);
    }
  }  class LiquidDateComboBoxUI
      extends com.birosoft.liquid.LiquidComboBoxUI
  {
    protected ComboPopup createPopup()
    {
      return new DatePopup(comboBox);
    }
}
 class JaneComboBoxUI
   extends  jane.ui.lf.jane.JaneComboBoxUI
  {
    protected ComboPopup createPopup()
    {
      return new DatePopup(comboBox);
    }
}
  class NapkinComboBoxUI
    extends  napkin.NapkinComboBoxUI
   {
     protected ComboPopup createPopup()
     {
       return new DatePopup(comboBox);
     }
 } class ThreeD_ComboBoxUI
   extends  swing.addon.plaf.threeD.ThreeD_ComboBoxUI
  {
    protected ComboPopup createPopup()
    {
      return new DatePopup(comboBox);
    }
}  class GtkComboBoxUI
    extends  org.gtk.java.swing.plaf.gtk.GtkComboBoxUI
   {
     protected ComboPopup createPopup()
     {
       return new DatePopup(comboBox);
     }
 }

Answer 1

（续上）
// DatePopup inner class
  class DatePopup
      implements ComboPopup, MouseMotionListener,KeyListener, PopupMenuListener,
      MouseListener
  {    protected JComboBox comboBox;
    protected Calendar calendar;
    protected JPopupMenu popup;
    protected JLabel monthLabel;
    protected JPanel days = null;
    protected SimpleDateFormat monthFormat = new SimpleDateFormat("yyyy-MM");    protected Color selectedBackground;
    protected Color selectedForeground;
    protected Color background;
    protected Color foreground;    public DatePopup(JComboBox comboBox)
    {
      this.comboBox = comboBox;
      calendar = Calendar.getInstance();
      // check Look and Feel
      background = UIManager.getColor("ComboBox.background");
      foreground = UIManager.getColor("ComboBox.foreground");
      selectedBackground = UIManager.getColor(
          "ComboBox.selectionBackground");
      selectedForeground = UIManager.getColor(
          "ComboBox.selectionForeground");      initializePopup();
    }    //========================================
    // begin ComboPopup method implementations
    //
    public void show()
    {
      try
      {
        // if setSelectedItem() was called with a valid date, adjust the calendar
        calendar.setTime(dateFormat.parse(comboBox.getSelectedItem().
                                          toString()));
      }
      catch (Exception e)
      {}
      updatePopup();
      popup.show(comboBox, 0, comboBox.getHeight());
    }    public void hide()
    {
      popup.setVisible(false);
    }    protected JList list = new JList();
    public JList getList()
    {
      return list;
    }    public MouseListener getMouseListener()
    {
      return this;
    }    public MouseMotionListener getMouseMotionListener()
    {
      return this;
    }    public KeyListener getKeyListener()
    {
      return this;
    }    public boolean isVisible()
    {
      return popup.isVisible();
    }    public void uninstallingUI()
    {
      popup.removePopupMenuListener(this);
    }    // end ComboPopup method implementations    // begin Event Listeners
    // MouseListener    public void mousePressed(MouseEvent e)
    {}    public void mouseReleased(MouseEvent e)
    {}    // something else registered for MousePressed
    public void mouseClicked(MouseEvent e)
    {
      /*if (!SwingUtilities.isLeftMouseButton(e))
      {
        return;
      }
      if (!comboBox.isEnabled())
      {
        return;
      }
      if (comboBox.isEditable())
      {
        comboBox.getEditor().getEditorComponent().requestFocus();
        //comboBox.getEditor().getEditorComponent().setFocusTraversalKeysEnabled(false);
      }
      else
      {
        comboBox.requestFocus();
        //comboBox.setFocusTraversalKeysEnabled(false);
      }*/
      togglePopup();
    }

Answer 2

（续上）
    protected boolean mouseInside = false;
    public void mouseEntered(MouseEvent e)
    {
      mouseInside = true;
    }    public void mouseExited(MouseEvent e)
    {
      mouseInside = false;
      //comboBox.getParent().getParent().requestFocus();
    }    // MouseMotionListener
    public void mouseDragged(MouseEvent e)
    {}    public void mouseMoved(MouseEvent e)
    {}    // KeyListener
    public void keyPressed(KeyEvent e)
    {}    public void keyTyped(KeyEvent e)
    {}    public void keyReleased(KeyEvent e)
    {
      if (e.getKeyCode() == KeyEvent.VK_SPACE ||
          e.getKeyCode() == KeyEvent.VK_ENTER)
      {
        togglePopup();
      }
    }    /**
     * Variables hideNext and mouseInside are used to
     * hide the popupMenu by clicking the mouse in the JComboBox
     * @param e PopupMenuEvent
     */
    public void popupMenuCanceled(PopupMenuEvent e)
    {}    protected boolean hideNext = false;
    public void popupMenuWillBecomeInvisible(PopupMenuEvent e)
    {
      hideNext = mouseInside;
    }    public void popupMenuWillBecomeVisible(PopupMenuEvent e)
    {}    //
    // end Event Listeners
    //=================================================================    //===================================================================
    // begin Utility methods
    //    protected void togglePopup()
    {
      if (isVisible() || hideNext)
      {
        hide();
      }
      else
      {
        show();
      }
      hideNext = false;
    }    //
    // end Utility methods
    //=================================================================    // Note *** did not use JButton because Popup closes when pressed
    protected JLabel createUpdateButton(final int field, final int amount)
    {
      final JLabel label = new JLabel();
      final Border selectedBorder = new EtchedBorder();
      final Border unselectedBorder = new EmptyBorder(selectedBorder.
          getBorderInsets(new JLabel()));
      label.setBorder(unselectedBorder);
      label.setForeground(foreground);
      label.addMouseListener(new MouseAdapter()
      {
        public void mouseReleased(MouseEvent e)
        {
          calendar.add(field, amount);
          updatePopup();
        }        public void mouseEntered(MouseEvent e)
        {
          label.setBorder(selectedBorder);
        }        public void mouseExited(MouseEvent e)
        {
          label.setBorder(unselectedBorder);
        }
      });
      return label;
    }

Answer 3

（续上）
    protected void initializePopup()
    {
      JPanel header = new JPanel(); // used Box, but it wasn't Opaque
      header.setLayout(new BoxLayout(header, BoxLayout.X_AXIS));
      header.setBackground(background);
      header.setOpaque(true);      JLabel label;
      label = createUpdateButton(Calendar.YEAR, -1);
      label.setText("上一年");
      header.add(Box.createHorizontalStrut(12));
      header.add(label);
      header.add(Box.createHorizontalStrut(12));      label = createUpdateButton(Calendar.MONTH, -1);
      label.setText("上个月");
      //label.setToolTipText("上个月");
      //header.add(label);
      header.add(Box.createHorizontalStrut(12));
      header.add(label);
      header.add(Box.createHorizontalStrut(12));     // label.setText("  ");
     // header.add(label);      monthLabel = new JLabel("", JLabel.CENTER);
      monthLabel.setForeground(foreground);
      //header.add(Box.createHorizontalGlue());
      header.add(Box.createHorizontalStrut(12));
      header.add(monthLabel);
      header.add(Box.createHorizontalStrut(12));
      //header.add(Box.createHorizontalGlue());      //label.setText("  ");
      //header.add(label);      label = createUpdateButton(Calendar.MONTH, 1);
      label.setText("下个月");
      //label.setToolTipText("下个月");
      // header.add(label);
      header.add(Box.createHorizontalStrut(12));
      header.add(label);
      header.add(Box.createHorizontalStrut(12));      label = createUpdateButton(Calendar.YEAR, 1);
      label.setText("下一年");
      //label.setToolTipText("下一年");      header.add(Box.createHorizontalStrut(12));
      header.add(label);
      header.add(Box.createHorizontalStrut(12));      popup = new JPopupMenu();
      popup.setBorder(BorderFactory.createLineBorder(Color.black));
      popup.setLayout(new BorderLayout());
      popup.setBackground(background);
      popup.addPopupMenuListener(this);
      popup.add(BorderLayout.NORTH, header);
    }    // update the Popup when either the month or the year of the calendar has been changed
    protected void updatePopup()
    {
      monthLabel.setText(monthFormat.format(calendar.getTime()));
      if (days != null)
      {
        popup.remove(days);
      }
      days = new JPanel(new GridLayout(0, 7));
      days.setBackground(background);
      days.setOpaque(true);      Calendar setupCalendar = (Calendar) calendar.clone();
      setupCalendar.set(Calendar.DAY_OF_WEEK,
                        setupCalendar.getFirstDayOfWeek());
      for (int i = 0; i < 7; i++)
      {
        int dayInt = setupCalendar.get(Calendar.DAY_OF_WEEK);
        final JLabel label = new JLabel();
        label.setHorizontalAlignment(JLabel.CENTER);
        if (dayInt == Calendar.SUNDAY)
        {
          label.setText("日");
          //label.setToolTipText("星期日");
        }
        else if (dayInt == Calendar.MONDAY)
        {
          label.setText("一");
          //label.setToolTipText("星期一");
        }
        else if (dayInt == Calendar.TUESDAY)
        {
          label.setText("二");
          //label.setToolTipText("星期二");
        }
        else if (dayInt == Calendar.WEDNESDAY)
        {
          label.setText("三");
          //label.setToolTipText("星期三");
        }
        else if (dayInt == Calendar.THURSDAY)
        {
          label.setText("四");
          //label.setToolTipText("星期四");
        }
        else if (dayInt == Calendar.FRIDAY)
        {
          label.setText("五");
          //label.setToolTipText("星期五");
        }
        else if (dayInt == Calendar.SATURDAY)
        {
          label.setText("六");
          //label.setToolTipText("星期六");
        }
        days.add(label);
        setupCalendar.roll(Calendar.DAY_OF_WEEK, true);
      }      setupCalendar = (Calendar) calendar.clone();
      setupCalendar.set(Calendar.DAY_OF_MONTH, 1);
      int first = setupCalendar.get(Calendar.DAY_OF_WEEK);
      for (int i = 0; i < (first - 1); i++)
      {
        days.add(new JLabel(""));
      }
      for (int i = 1;
           i <= setupCalendar.getActualMaximum(Calendar.DAY_OF_MONTH); i++)
      {
        final int day = i;
        final JLabel label = new JLabel(String.valueOf(day));
        label.setHorizontalAlignment(JLabel.CENTER);
        label.setForeground(foreground);
        label.addMouseListener(new MouseListener()
        {
          public void mousePressed(MouseEvent e)
          {}          public void mouseClicked(MouseEvent e)
          {}          public void mouseReleased(MouseEvent e)
          {
            label.setOpaque(false);
            label.setBackground(background);
            label.setForeground(foreground);
            calendar.set(Calendar.DAY_OF_MONTH, day);
            comboBox.setSelectedItem(dateFormat.format(calendar.
                getTime()));
            hide();
            // hide is called with setSelectedItem() ... removeAll()
            //comboBox.requestFocus();
            //comboBox.getParent().getParent().requestFocus();
           }          public void mouseEntered(MouseEvent e)
          {
            label.setOpaque(true);
            label.setBackground(selectedBackground);
            label.setForeground(selectedForeground);
          }          public void mouseExited(MouseEvent e)
          {
            label.setOpaque(false);
            label.setBackground(background);
            label.setForeground(foreground);
          }
        });        days.add(label);
      }
      popup.add(BorderLayout.CENTER, days);
      popup.pack();
    }
  }
}

Answer 4

...
popup.setBackground(background);
popup.addPopupMenuListener(this);
popup.add(BorderLayout.NORTH, header);popup.setFocusable(false);   //加上这一行...

Answer 5

gtlang78()的做法不行啊，还有哪位大哥有办法？？？？？？？？

Answer 6

是不是需要设置一下FocusTraversalPolicy？？？？
偶不知道怎么用FocusTraversalPolicy这个类，哪位大哥能不能给各例子!
多谢！

Answer 7

已调通你的代码，正在研究，，
下面这些类com.birosoft.liquid.LiquidComboBoxUI
jane.ui.lf.jane.JaneComboBoxUI..从哪得到的？Thx!

Answer 8

我将这个类用于我的软件系统，发现并没有出现你所说的问题！焦点等问题一切正常！我的JDK为1.4.2。另外由于我想使用这个控件，没有LiquidComboBoxUI等类界面会显得比较难看，因此如果你那有的话，请给我一份，我的mail：[email protected],Thx!