Mega Code Archive
KeyStroke Sample
<![CDATA[
import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.ActionMap;
import javax.swing.InputMap;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.KeyStroke;
public class KeyStrokeSample {
private static final String ACTION_KEY = "theAction";
public static void main(String args[]) {
JFrame frame = new JFrame("KeyStroke Sample");
JButton buttonA = new JButton("<html><center>FOCUSED<br>control alt 7");
JButton buttonB = new JButton("<html><center>FOCUS/RELEASE<br>VK_ENTER");
JButton buttonC = new JButton(
"<html><center>ANCESTOR<br>VK_F4+SHIFT_MASK");
JButton buttonD = new JButton("<html><center>WINDOW<br>' '");
// Define ActionListener
Action actionListener = new AbstractAction() {
public void actionPerformed(ActionEvent actionEvent) {
JButton source = (JButton) actionEvent.getSource();
System.out.println("Activated: " + source.getText());
}
};
KeyStroke controlAlt7 = KeyStroke.getKeyStroke("control alt 7");
InputMap inputMap = buttonA.getInputMap();
inputMap.put(controlAlt7, ACTION_KEY);
ActionMap actionMap = buttonA.getActionMap();
actionMap.put(ACTION_KEY, actionListener);
KeyStroke enter = KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0, true);
inputMap = buttonB.getInputMap();
inputMap.put(enter, ACTION_KEY);
buttonB.setActionMap(actionMap);
KeyStroke shiftF4 = KeyStroke.getKeyStroke(KeyEvent.VK_F4,InputEvent.SHIFT_MASK);
inputMap = buttonC.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
inputMap.put(shiftF4, ACTION_KEY);
buttonC.setActionMap(actionMap);
KeyStroke space = KeyStroke.getKeyStroke(' ');
inputMap = buttonD.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW);
inputMap.put(space, ACTION_KEY);
buttonD.setActionMap(actionMap);
Container contentPane = frame.getContentPane();
contentPane.setLayout(new GridLayout(2, 2));
contentPane.add(buttonA);
contentPane.add(buttonB);
contentPane.add(buttonC);
contentPane.add(buttonD);
frame.setSize(400, 200);
frame.setVisible(true);
}
}
]]>