1 import java.awt.*;
2 import javax.swing.*;
3 /**
4 * 动作 Action 示例
5 * ActionListener-->Action
6 */
7
8 import com.sun.java_cup.internal.internal_error;
9
10 import java.awt.event.*;
11
12 public class ActionTest {
13 public static void main(String[] argu)
14 {
15 EventQueue.invokeLater(new Runnable()
16 {
17 public void run()
18 {
19 ActionFrame actionframe = new ActionFrame();
20 actionframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
21 actionframe.setVisible(true);
22 }
23 });
24 }
25 }
26 class ActionFrame extends JFrame
27 {
28 public ActionFrame()
29 {
30 setTitle("ActionTest");
31 setSize(DEFAULT_WIDTH,DEFAULT_HEIGHT);
32
33 buttonPanel = new JPanel();
34 //实例化Action
35 Action yellowAction = new ColorAction("Yellow",new ImageIcon("yellow.gif"),Color.YELLOW);
36 Action blueAction = new ColorAction("Blue",new ImageIcon("blue.gif"),Color.BLUE);
37 Action redAction = new ColorAction("Red",new ImageIcon("red.gif"),Color.RED);
38 //用Action制作控件（按钮）
39 buttonPanel.add(new JButton(yellowAction));
40 buttonPanel.add(new JButton(blueAction));
41 buttonPanel.add(new JButton(redAction));
42
43 add(buttonPanel);
44 //InputMap 1次映射，从键盘到控件
45 InputMap imap = buttonPanel.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
46 imap.put(KeyStroke.getKeyStroke("ctrl Y"), "panel.yellow");
47 imap.put(KeyStroke.getKeyStroke("ctrl B"), "panel.blue");
48 imap.put(KeyStroke.getKeyStroke("ctrl R"), "panel.red");
49 //ActionMap 2次映射，从控件到Action
50 ActionMap amap = buttonPanel.getActionMap();
51 amap.put("panel.yellow", yellowAction);
52 amap.put("panel.blue", blueAction);
53 amap.put("panel.red", redAction);
54 }
55 //自定义Action类ColorAction（使用AbstractAction）
56 public class ColorAction extends AbstractAction
57 {
58 public ColorAction(String name,ImageIcon icon,Color c)
59 {
60 putValue(Action.NAME, name);
61 putValue(Action.SMALL_ICON, icon);
62 putValue(Action.SHORT_DESCRIPTION, "Set panel color to" + name.toLowerCase());
63 putValue("color", c);
64 }
65 public void actionPerformed(ActionEvent event)
66 {
67 Color c = (Color)getValue("color");
68 buttonPanel.setBackground(c);
69 }
70 }
71
72 private JPanel buttonPanel;
73 public static final int DEFAULT_WIDTH = 300;
74 public static final int DEFAULT_HEIGHT = 300;
75 }
