Example usage for javax.swing JComponent WHEN_IN_FOCUSED_WINDOW

Introduction

In this page you can find the example usage for javax.swing JComponent WHEN_IN_FOCUSED_WINDOW.

Prototype

int WHEN_IN_FOCUSED_WINDOW

To view the source code for javax.swing JComponent WHEN_IN_FOCUSED_WINDOW.

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Document

Constant used for registerKeyboardAction that means that the command should be invoked when the receiving component is in the window that has the focus or is itself the focused component.

Usage

From source file:Main.java

public static void main(String args[]) {
    String ACTION_KEY = "The Action";

    JFrame frame = new JFrame("KeyStroke Sample");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JButton buttonA = new JButton("FOCUSED (control alt 7)");
    JButton buttonB = new JButton("FOCUS/RELEASE (VK_ENTER)");
    JButton buttonC = new JButton("ANCESTOR  (VK_F4+SHIFT_MASK)");
    JButton buttonD = new JButton("WINDOW (' ')");

    Action actionListener = new AbstractAction() {
        public void actionPerformed(ActionEvent actionEvent) {
            JButton source = (JButton) actionEvent.getSource();
            System.out.println("Activated: " + source.getText());
        }//  ww w .j  a v  a2s .co  m
    };

    KeyStroke controlAlt7 = KeyStroke.getKeyStroke("control alt 7");
    InputMap inputMap = buttonA.getInputMap();
    inputMap.put(controlAlt7, ACTION_KEY);
    ActionMap actionMap = buttonA.getActionMap();
    Object[] keys = actionMap.keys();
    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);

    frame.setLayout(new GridLayout(2, 2));
    frame.add(buttonA);
    frame.add(buttonB);
    frame.add(buttonC);
    frame.add(buttonD);

    frame.setSize(400, 200);
    frame.setVisible(true);
}

---

From source file:Main.java

public static void main(String args[]) {
    String ACTION_KEY = "The Action";

    JFrame frame = new JFrame("KeyStroke Sample");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JButton buttonA = new JButton("FOCUSED (control alt 7)");
    JButton buttonB = new JButton("FOCUS/RELEASE (VK_ENTER)");
    JButton buttonC = new JButton("ANCESTOR  (VK_F4+SHIFT_MASK)");
    JButton buttonD = new JButton("WINDOW (' ')");

    Action actionListener = new AbstractAction() {
        public void actionPerformed(ActionEvent actionEvent) {
            JButton source = (JButton) actionEvent.getSource();
            System.out.println("Activated: " + source.getText());
        }//from w  ww  .j a v  a  2 s  .co  m
    };

    KeyStroke controlAlt7 = KeyStroke.getKeyStroke("control alt 7");
    InputMap inputMap = buttonA.getInputMap();
    inputMap.put(controlAlt7, ACTION_KEY);
    ActionMap actionMap = buttonA.getActionMap();
    Object[] keys = actionMap.allKeys();
    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);

    frame.setLayout(new GridLayout(2, 2));
    frame.add(buttonA);
    frame.add(buttonB);
    frame.add(buttonC);
    frame.add(buttonD);

    frame.setSize(400, 200);
    frame.setVisible(true);
}

---

From source file:Main.java

public static void main(String args[]) {
    String ACTION_KEY = "The Action";

    JFrame frame = new JFrame("KeyStroke Sample");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JButton buttonA = new JButton("FOCUSED (control alt 7)");
    JButton buttonB = new JButton("FOCUS/RELEASE (VK_ENTER)");
    JButton buttonC = new JButton("ANCESTOR  (VK_F4+SHIFT_MASK)");
    JButton buttonD = new JButton("WINDOW (' ')");

    Action actionListener = new AbstractAction() {
        public void actionPerformed(ActionEvent actionEvent) {
            JButton source = (JButton) actionEvent.getSource();
            System.out.println("Activated: " + source.getText());
        }/*from   w  w w . j  ava2  s .  co m*/
    };

    KeyStroke controlAlt7 = KeyStroke.getKeyStroke("control alt 7");
    InputMap inputMap = buttonA.getInputMap();
    inputMap.put(controlAlt7, ACTION_KEY);
    ActionMap actionMap = buttonA.getActionMap();

    System.out.println(actionMap.size());

    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);

    frame.setLayout(new GridLayout(2, 2));
    frame.add(buttonA);
    frame.add(buttonB);
    frame.add(buttonC);
    frame.add(buttonD);

    frame.setSize(400, 200);
    frame.setVisible(true);
}

---

From source file:KeyStrokeSample.java

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());
        }// ww w  . j a  v  a2s  .  c o m
    };

    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);
}

---

From source file:Main.java

public static void main(String args[]) {
    String ACTION_KEY = "The Action";

    JFrame frame = new JFrame("KeyStroke Sample");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JButton buttonA = new JButton("FOCUSED (control alt 7)");
    JButton buttonB = new JButton("FOCUS/RELEASE (VK_ENTER)");
    JButton buttonC = new JButton("ANCESTOR  (VK_F4+SHIFT_MASK)");
    JButton buttonD = new JButton("WINDOW (' ')");

    Action actionListener = new AbstractAction() {
        public void actionPerformed(ActionEvent actionEvent) {
            JButton source = (JButton) actionEvent.getSource();
            System.out.println("Activated: " + source.getText());
        }/*from  w  w  w .j av a  2  s. com*/
    };

    KeyStroke controlAlt7 = KeyStroke.getKeyStroke("control alt 7");
    InputMap inputMap = buttonA.getInputMap();
    inputMap.put(controlAlt7, ACTION_KEY);
    ActionMap actionMap = buttonA.getActionMap();

    ActionMap newMap = new ActionMap();
    newMap.setParent(actionMap);

    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);

    frame.setLayout(new GridLayout(2, 2));
    frame.add(buttonA);
    frame.add(buttonB);
    frame.add(buttonC);
    frame.add(buttonD);

    frame.setSize(400, 200);
    frame.setVisible(true);
}

---

From source file:Main.java

public static void main(String args[]) {
    String ACTION_KEY = "The Action";

    JFrame frame = new JFrame("KeyStroke Sample");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JButton buttonA = new JButton("FOCUSED (control alt 7)");
    JButton buttonB = new JButton("FOCUS/RELEASE (VK_ENTER)");
    JButton buttonC = new JButton("ANCESTOR  (VK_F4+SHIFT_MASK)");
    JButton buttonD = new JButton("WINDOW (' ')");

    Action actionListener = new AbstractAction() {
        public void actionPerformed(ActionEvent actionEvent) {
            JButton source = (JButton) actionEvent.getSource();
            System.out.println("Activated: " + source.getText());
        }/* w ww.ja v a  2 s.  co  m*/
    };

    KeyStroke controlAlt7 = KeyStroke.getKeyStroke("control alt 7");
    InputMap inputMap = buttonA.getInputMap();
    inputMap.put(controlAlt7, ACTION_KEY);
    ActionMap actionMap = buttonA.getActionMap();
    Object[] keys = actionMap.keys();
    for (Object key : keys) {
        actionMap.get(key);
    }
    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);

    frame.setLayout(new GridLayout(2, 2));
    frame.add(buttonA);
    frame.add(buttonB);
    frame.add(buttonC);
    frame.add(buttonD);

    frame.setSize(400, 200);
    frame.setVisible(true);
}

---

From source file:Main.java

public static void main(String args[]) {
    String ACTION_KEY = "The Action";

    JFrame frame = new JFrame("KeyStroke Sample");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JButton buttonA = new JButton("FOCUSED (control alt 7)");
    JButton buttonB = new JButton("FOCUS/RELEASE (VK_ENTER)");
    JButton buttonC = new JButton("ANCESTOR  (VK_F4+SHIFT_MASK)");
    JButton buttonD = new JButton("WINDOW (' ')");

    Action actionListener = new AbstractAction() {
        public void actionPerformed(ActionEvent actionEvent) {
            JButton source = (JButton) actionEvent.getSource();
            System.out.println("Activated: " + source.getText());
        }//from w  w w  .  j a  v  a2  s  .co  m
    };

    KeyStroke controlAlt7 = KeyStroke.getKeyStroke("control alt 7");
    InputMap inputMap = buttonA.getInputMap();
    inputMap.put(controlAlt7, ACTION_KEY);
    ActionMap actionMap = buttonA.getActionMap();
    Object[] keys = actionMap.keys();
    for (Object key : keys) {
        actionMap.remove(key);
    }
    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);

    frame.setLayout(new GridLayout(2, 2));
    frame.add(buttonA);
    frame.add(buttonB);
    frame.add(buttonC);
    frame.add(buttonD);

    frame.setSize(400, 200);
    frame.setVisible(true);
}

---

From source file:Main.java

public static void main(String args[]) {
    String ACTION_KEY = "The Action";

    JFrame frame = new JFrame("KeyStroke Sample");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JButton buttonA = new JButton("FOCUSED (control alt 7)");
    JButton buttonB = new JButton("FOCUS/RELEASE (VK_ENTER)");
    JButton buttonC = new JButton("ANCESTOR  (VK_F4+SHIFT_MASK)");
    JButton buttonD = new JButton("WINDOW (' ')");

    Action actionListener = new AbstractAction() {
        public void actionPerformed(ActionEvent actionEvent) {
            JButton source = (JButton) actionEvent.getSource();
            System.out.println("Activated: " + source.getText());
        }//  w  ww .j  av  a 2 s  .  c o m
    };

    KeyStroke controlAlt7 = KeyStroke.getKeyStroke("control alt 7");
    InputMap inputMap = buttonA.getInputMap();
    inputMap.put(controlAlt7, ACTION_KEY);
    ActionMap actionMap = buttonA.getActionMap();

    ActionMap newMap = new ActionMap();
    newMap.setParent(actionMap);
    System.out.println(newMap.getParent());

    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);

    frame.setLayout(new GridLayout(2, 2));
    frame.add(buttonA);
    frame.add(buttonB);
    frame.add(buttonC);
    frame.add(buttonD);

    frame.setSize(400, 200);
    frame.setVisible(true);
}

---

From source file:MoveViewSample.java

public static void main(String args[]) {
    JFrame frame = new JFrame("JViewport Sample");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Icon icon = new ImageIcon("yourFile.gif");
    JLabel dogLabel = new JLabel(icon);
    JViewport viewport = new JViewport();
    viewport.setView(dogLabel);/*www . jav a 2 s  .  c  om*/
    InputMap inputMap = viewport.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW);
    ActionMap actionMap = viewport.getActionMap();

    Action upKeyAction = new MoveAction(viewport, DECREASE, Y_AXIS, UNIT);
    KeyStroke upKey = KeyStroke.getKeyStroke("UP");
    inputMap.put(upKey, "up");
    actionMap.put("up", upKeyAction);

    Action downKeyAction = new MoveAction(viewport, INCREASE, Y_AXIS, UNIT);
    KeyStroke downKey = KeyStroke.getKeyStroke("DOWN");
    inputMap.put(downKey, "down");
    actionMap.put("down", downKeyAction);

    Action leftKeyAction = new MoveAction(viewport, DECREASE, X_AXIS, UNIT);
    KeyStroke leftKey = KeyStroke.getKeyStroke("LEFT");
    inputMap.put(leftKey, "left");
    actionMap.put("left", leftKeyAction);

    Action rightKeyAction = new MoveAction(viewport, INCREASE, X_AXIS, UNIT);
    KeyStroke rightKey = KeyStroke.getKeyStroke("RIGHT");
    inputMap.put(rightKey, "right");
    actionMap.put("right", rightKeyAction);

    Action pgUpKeyAction = new MoveAction(viewport, DECREASE, Y_AXIS, BLOCK);
    KeyStroke pgUpKey = KeyStroke.getKeyStroke("PAGE_UP");
    inputMap.put(pgUpKey, "pgUp");
    actionMap.put("pgUp", pgUpKeyAction);

    Action pgDnKeyAction = new MoveAction(viewport, INCREASE, Y_AXIS, BLOCK);
    KeyStroke pgDnKey = KeyStroke.getKeyStroke("PAGE_DOWN");
    inputMap.put(pgDnKey, "pgDn");
    actionMap.put("pgDn", pgDnKeyAction);

    Action shiftPgUpKeyAction = new MoveAction(viewport, DECREASE, X_AXIS, BLOCK);
    KeyStroke shiftPgUpKey = KeyStroke.getKeyStroke("shift PAGE_UP");
    inputMap.put(shiftPgUpKey, "shiftPgUp");
    actionMap.put("shiftPgUp", shiftPgUpKeyAction);

    Action shiftPgDnKeyAction = new MoveAction(viewport, INCREASE, X_AXIS, BLOCK);
    KeyStroke shiftPgDnKey = KeyStroke.getKeyStroke("shift PAGE_DOWN");
    inputMap.put(shiftPgDnKey, "shiftPgDn");
    actionMap.put("shiftPgDn", shiftPgDnKeyAction);

    frame.add(viewport, BorderLayout.CENTER);
    frame.setSize(300, 200);
    frame.setVisible(true);
}

---

From source file:MoveViewSample.java

public static void main(String args[]) {
    JFrame frame = new JFrame("JViewport Sample");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    Icon icon = new ImageIcon("dog.jpg");
    JLabel dogLabel = new JLabel(icon);
    JViewport viewport = new JViewport();
    viewport.setView(dogLabel);/*  www . j a  va2s .  c o m*/

    InputMap inputMap = viewport.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW);
    ActionMap actionMap = viewport.getActionMap();

    // Up key moves view up unit
    Action upKeyAction = new MoveAction(viewport, DECREASE, Y_AXIS, UNIT);
    KeyStroke upKey = KeyStroke.getKeyStroke("UP");
    inputMap.put(upKey, "up");
    actionMap.put("up", upKeyAction);

    // Down key moves view down unit
    Action downKeyAction = new MoveAction(viewport, INCREASE, Y_AXIS, UNIT);
    KeyStroke downKey = KeyStroke.getKeyStroke("DOWN");
    inputMap.put(downKey, "down");
    actionMap.put("down", downKeyAction);

    // Left key moves view left unit
    Action leftKeyAction = new MoveAction(viewport, DECREASE, X_AXIS, UNIT);
    KeyStroke leftKey = KeyStroke.getKeyStroke("LEFT");
    inputMap.put(leftKey, "left");
    actionMap.put("left", leftKeyAction);

    // Right key moves view right unit
    Action rightKeyAction = new MoveAction(viewport, INCREASE, X_AXIS, UNIT);
    KeyStroke rightKey = KeyStroke.getKeyStroke("RIGHT");
    inputMap.put(rightKey, "right");
    actionMap.put("right", rightKeyAction);

    // PgUp key moves view up block
    Action pgUpKeyAction = new MoveAction(viewport, DECREASE, Y_AXIS, BLOCK);
    KeyStroke pgUpKey = KeyStroke.getKeyStroke("PAGE_UP");
    inputMap.put(pgUpKey, "pgUp");
    actionMap.put("pgUp", pgUpKeyAction);

    // PgDn key moves view down block
    Action pgDnKeyAction = new MoveAction(viewport, INCREASE, Y_AXIS, BLOCK);
    KeyStroke pgDnKey = KeyStroke.getKeyStroke("PAGE_DOWN");
    inputMap.put(pgDnKey, "pgDn");
    actionMap.put("pgDn", pgDnKeyAction);

    // Shift-PgUp key moves view left block
    Action shiftPgUpKeyAction = new MoveAction(viewport, DECREASE, X_AXIS, BLOCK);
    KeyStroke shiftPgUpKey = KeyStroke.getKeyStroke("shift PAGE_UP");
    inputMap.put(shiftPgUpKey, "shiftPgUp");
    actionMap.put("shiftPgUp", shiftPgUpKeyAction);

    // Shift-PgDn key moves view right block
    Action shiftPgDnKeyAction = new MoveAction(viewport, INCREASE, X_AXIS, BLOCK);
    KeyStroke shiftPgDnKey = KeyStroke.getKeyStroke("shift PAGE_DOWN");
    inputMap.put(shiftPgDnKey, "shiftPgDn");
    actionMap.put("shiftPgDn", shiftPgDnKeyAction);

    Container contentPane = frame.getContentPane();
    contentPane.add(viewport, BorderLayout.CENTER);
    frame.setSize(300, 200);
    frame.setVisible(true);
}

---

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