wmvcchkmenuitemctl.java

一个温度计的小程序

/*
 * WmvcChkMenuItemCtl - implements JCheckBoxMenuItem controller
 * (c) 2001, Bruce E. Wampler
 */

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

public class WmvcChkMenuItemCtl extends WmvcController
{
    private JMenu myMenu;
    private JCheckBoxMenuItem checkBoxItem;

    
    // Constructor for JMenu item:  JCheckBoxMenuItem
    public WmvcChkMenuItemCtl(JMenu menu,       // JMenu I go with
                              String text,        // Button's text
                              String icon,        // the icon's name
                              char mnemonic,      // Button's mnemonic
                              String accel,       // accelerator
                              boolean checked,    // initial state
                              WmvcExecutor wExec)
    {
	super((JComponent)new JCheckBoxMenuItem(), null, wExec);
	
        myMenu = menu;
        checkBoxItem = (JCheckBoxMenuItem) myComponent;
        if (text != null)
            checkBoxItem.setText(text);
        if (mnemonic != ' ' && mnemonic != 0)
            checkBoxItem.setMnemonic(mnemonic);
        if (accel != null)
          {
            KeyStroke ks = KeyStroke.getKeyStroke(accel);
            checkBoxItem.setAccelerator(ks);
          }
        if (icon != null)
          {
            Icon theIcon = new ImageIcon(icon);
            checkBoxItem.setIcon(theIcon);
          }

        checkBoxItem.setState(checked);

        checkBoxItem.addActionListener(this);   // Add listeners
        checkBoxItem.addItemListener(this);
        myMenu.add(checkBoxItem);        // Finally, add to menu
    }

    public boolean getState()
    {	return checkBoxItem.getState();
    }
    public void setState(boolean checked)
    {	checkBoxItem.setState(checked);
    }
    public void setEnabled(boolean enable)
    {	checkBoxItem.setEnabled(enable);
    }
    public JMenu getJMenu() { return myMenu; }
    public JCheckBoxMenuItem getJCheckBoxMenuItem()
    {	return checkBoxItem;
    }
}