java的常用函数5

import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.Action;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
public class ToolTipCtrl
{
    private static boolean flag = true;
    public static void main(String[] args)
    {
        JFrame frame = new JFrame();
        final JButton btnSH = new JButton("Show or Hide");
        final JButton btnS = new JButton("Show Only");
        btnSH.setToolTipText(btnSH.getText());
        btnS.setToolTipText(btnS.getText());
        frame.add(btnSH, BorderLayout.WEST);
        frame.add(btnS, BorderLayout.EAST);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(300, 100);
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
        btnSH.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                if(flag)
                {
                    postToolTip(btnSH);
                }
                else
                {
                    hideToolTip(btnSH);
                }
                flag = !flag;
            }
        });
        btnS.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                postToolTip(btnS);
            }
        });
    }
    public static void postToolTip(JComponent comp)
    {
        Action action = comp.getActionMap().get("postTip");
        if(action != null)
        {
            ActionEvent ae = new ActionEvent(comp, ActionEvent.ACTION_PERFORMED, "postTip", EventQueue.getMostRecentEventTime(), 0);
            action.actionPerformed(ae);
        }
    }
    public static void hideToolTip(JComponent comp)
    {
        Action action = comp.getActionMap().get("hideTip");
        if(action != null)
        {
            ActionEvent ae = new ActionEvent(comp, ActionEvent.ACTION_PERFORMED, "hideTip", EventQueue.getMostRecentEventTime(), 0);
            action.actionPerformed(ae);
        }
    }
}

posted on 2009-06-10 21:12 rrong_m 阅读(205) 评论(0) 编辑收藏所属分类: java

java的常用函数5

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