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JMenuFram.java
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123 lines (102 loc) · 3.29 KB
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package Chapter9Conponent;
import java.awt.BorderLayout;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.net.URL;
import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JPopupMenu;
public class JMenuFram extends JFrame{
public JMenuFram(){
Action exitAction;
JFrame menuFrame=new JFrame();
//设置为边框布局
menuFrame.setLayout(new BorderLayout());
//菜单栏放菜单，菜单中放子菜单
JMenuBar menuBar=new JMenuBar();
//”edit“菜单
JMenu editMenu=new JMenu("Edit");
menuBar.add(editMenu);
JMenuItem fontItem=new JMenuItem("Font");
editMenu.add(fontItem);
JMenuItem pastItem=new JMenuItem("Past");
editMenu.add(pastItem);
//将Add子菜单添加入编辑菜单，方法返回一个JMenuItem,可以对其添加监听(匿名内部类)
JMenuItem addMenu= editMenu.add("Add");
addMenu.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
}
});
//editMenu.addSeparator();
//"help"menu
JMenu helpMenu=new JMenu("help");
menuBar.add(helpMenu);
JMenuItem welcomeItem= helpMenu.add("Welcome");
JMenuItem contentItem=helpMenu.add("HelpContent");
//菜单中的图标
//JMenuItem iconItem=new JMenuItem("icon", new ImageIcon("blue.gif"));
//new ImageIcon(String Filename)并不能定位到图片资源
URL url=this.getClass().getResource("red.gif");
Icon icon=new ImageIcon(url);
//图标上添加事件
//JMenuItem iconItem=new JMenuItem("icon", icon);
//helpMenu.add(iconItem);
//上面这种方法并不能将事件绑定图标
Action IconAction=new AbstractAction("icon") {
public void actionPerformed(ActionEvent e) {
System.out.println("图标的测试事件");
}
};
//将此图标存储到动作对象中
IconAction.putValue(Action.SMALL_ICON, icon);
//将动作对象存储在菜单中
helpMenu.add(IconAction);
//File menu
JMenu fileMenu=new JMenu("File");
menuBar.add(fileMenu);
//定义动作：定义一个实现Action接口的类
exitAction=new AbstractAction("exit") {
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
};
//一下两句可以简写成----JMenuItem exitItem2= fileMenu.add(exitAction);
JMenuItem exitItem=new JMenuItem(exitAction);
fileMenu.add(exitItem);
//设置快捷键
JMenuItem aboutItem=new JMenuItem("About", 'A');
fileMenu.add(aboutItem);
//pop-up menu
//没有标题
JPopupMenu popup=new JPopupMenu();
popup.add(IconAction);
popup.add("helpItem1");
//must use show() method to show the popupMenu
JPanel panel=new JPanel();
//pop-up trigger弹出式触发器：windows和Linux中的pop-uptrigger是鼠标右键
panel.setComponentPopupMenu(popup);
//将menuBar放在Fram的北边
menuFrame.add(menuBar, BorderLayout.NORTH);
menuFrame.add(panel,BorderLayout.CENTER);
menuFrame.setVisible(true);
menuFrame.setSize(300, 500);
//设置fram的图标
System.out.println(url.toString());
//用getImage()读取，声音用getAudioClip()
Image image=new ImageIcon(url).getImage();
menuFrame.setIconImage(image);
menuFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new JMenuFram();
}
}