Java/Swing JFC/Actions
Содержание
- 1 Action Demo
- 2 Action events are fired by subclasses of AbstractButton and includes buttons, checkboxes, and menus.
- 3 Apply special filter to a JTextField
- 4 A text component has an action map with actions and keymaps with actions
- 5 Creating an Action
- 6 Enabling an Action
- 7 Listing the Actions in a Component
- 8 Listing the Key Bindings in a Component
- 9 Sharing an InputMap or an ActionMap Between Two Components
Action Demo
<source lang="java">
/* From http://java.sun.ru/docs/books/tutorial/index.html */ /*
* Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
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* list of conditions and the following disclaimer.
*
* -Redistribution in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
* ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
* OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN")
* AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE
* AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
* DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST
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* You acknowledge that this software is not designed, licensed or intended
* for use in the design, construction, operation or maintenance of any
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*/
/* Uses actions with a tool bar and a menu. */ import java.awt.BorderLayout; import java.awt.Dimension; import java.awt.event.ActionEvent; import java.awt.event.ItemEvent; import java.awt.event.ItemListener; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import javax.swing.AbstractAction; import javax.swing.Action; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.JCheckBoxMenuItem; import javax.swing.JFrame; import javax.swing.JMenu; import javax.swing.JMenuBar; import javax.swing.JMenuItem; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTextArea; import javax.swing.JToolBar; public class ActionDemo extends JFrame {
protected JTextArea textArea;
protected String newline = "\n";
protected Action leftAction;
protected Action middleAction;
protected Action rightAction;
public ActionDemo() {
//Do frame stuff.
super("ActionDemo");
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
//Create the toolbar and menu.
JToolBar toolBar = new JToolBar();
JMenu mainMenu = new JMenu("Menu");
createActionComponents(toolBar, mainMenu);
//Create the text area used for output.
textArea = new JTextArea(5, 30);
JScrollPane scrollPane = new JScrollPane(textArea);
//Lay out the content pane.
JPanel contentPane = new JPanel();
contentPane.setLayout(new BorderLayout());
contentPane.setPreferredSize(new Dimension(400, 150));
contentPane.add(toolBar, BorderLayout.SOUTH);
contentPane.add(scrollPane, BorderLayout.CENTER);
setContentPane(contentPane);
//Set up the menu bar.
JMenuBar mb = new JMenuBar();
mb.add(mainMenu);
mb.add(createAbleMenu());
setJMenuBar(mb);
}
protected void createActionComponents(JToolBar toolBar, JMenu mainMenu) {
JButton button = null;
JMenuItem menuItem = null;
//first button and menu item
leftAction = new AbstractAction("Go left", new ImageIcon(
"images/left.gif")) {
public void actionPerformed(ActionEvent e) {
displayResult("Action for first button/menu item", e);
}
};
button = toolBar.add(leftAction);
button.setText(""); //an icon-only button
button.setToolTipText("This is the left button");
menuItem = mainMenu.add(leftAction);
menuItem.setIcon(null); //arbitrarily chose not to use icon in menu
//second button and menu item
middleAction = new AbstractAction("Do something", new ImageIcon(
"images/middle.gif")) {
public void actionPerformed(ActionEvent e) {
displayResult("Action for second button/menu item", e);
}
};
button = toolBar.add(middleAction);
button.setText("");
button.setToolTipText("This is the middle button");
menuItem = mainMenu.add(middleAction);
menuItem.setIcon(null); //arbitrarily chose not to use icon in menu
//third button and menu item
rightAction = new AbstractAction("Go right", new ImageIcon(
"images/right.gif")) {
public void actionPerformed(ActionEvent e) {
displayResult("Action for third button/menu item", e);
}
};
button = toolBar.add(rightAction);
button.setText("");
button.setToolTipText("This is the right button");
menuItem = mainMenu.add(rightAction);
menuItem.setIcon(null); //arbitrarily chose not to use icon in menu
}
protected JMenu createAbleMenu() {
JMenu ableMenu = new JMenu("Action State");
JCheckBoxMenuItem cbmi = null;
cbmi = new JCheckBoxMenuItem("First action enabled");
cbmi.setSelected(true);
cbmi.addItemListener(new ItemListener() {
public void itemStateChanged(ItemEvent e) {
JCheckBoxMenuItem mi = (JCheckBoxMenuItem) (e.getSource());
boolean selected = (e.getStateChange() == ItemEvent.SELECTED);
leftAction.setEnabled(selected);
}
});
ableMenu.add(cbmi);
cbmi = new JCheckBoxMenuItem("Second action enabled");
cbmi.setSelected(true);
cbmi.addItemListener(new ItemListener() {
public void itemStateChanged(ItemEvent e) {
JCheckBoxMenuItem mi = (JCheckBoxMenuItem) (e.getSource());
boolean selected = (e.getStateChange() == ItemEvent.SELECTED);
middleAction.setEnabled(selected);
}
});
ableMenu.add(cbmi);
cbmi = new JCheckBoxMenuItem("Third action enabled");
cbmi.setSelected(true);
cbmi.addItemListener(new ItemListener() {
public void itemStateChanged(ItemEvent e) {
JCheckBoxMenuItem mi = (JCheckBoxMenuItem) (e.getSource());
boolean selected = (e.getStateChange() == ItemEvent.SELECTED);
rightAction.setEnabled(selected);
}
});
ableMenu.add(cbmi);
return ableMenu;
}
protected void displayResult(String actionDescription, ActionEvent e) {
String s = ("Action event detected by: " + actionDescription + newline
+ " Event source: " + e.getSource() + newline);
textArea.append(s);
}
public static void main(String[] args) {
ActionDemo frame = new ActionDemo();
frame.pack();
frame.setVisible(true);
}
}
</source>
<source lang="java">
import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.AbstractButton; import javax.swing.JButton; import javax.swing.JFrame; public class Main {
public static void main(String[] argv) throws Exception {
AbstractButton button = new JButton("OK");
button.addActionListener(new MyActionListener());
JFrame f = new JFrame();
f.add(button);
f.setSize(300, 300);
f.setVisible(true);
}
} class MyActionListener implements ActionListener {
public void actionPerformed(ActionEvent evt) {
AbstractButton button = (AbstractButton) evt.getSource();
System.out.println(button.getName());
}
}
</source>
Apply special filter to a JTextField
<source lang="java">
import java.awt.FlowLayout; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JTextField; import javax.swing.text.AttributeSet; import javax.swing.text.BadLocationException; import javax.swing.text.PlainDocument; class JTextFieldFilter extends PlainDocument {
public static final String NUMERIC = "0123456789";
protected String acceptedChars = null;
protected boolean negativeAccepted = false;
public JTextFieldFilter() {
this(NUMERIC);
}
public JTextFieldFilter(String acceptedchars) {
acceptedChars = acceptedchars;
}
public void setNegativeAccepted(boolean negativeaccepted) {
if (acceptedChars.equals(NUMERIC)) {
negativeAccepted = negativeaccepted;
acceptedChars += "-";
}
}
public void insertString(int offset, String str, AttributeSet attr) throws BadLocationException {
if (str == null)
return;
for (int i = 0; i < str.length(); i++) {
if (acceptedChars.indexOf(str.valueOf(str.charAt(i))) == -1)
return;
}
if (negativeAccepted && str.indexOf("-") != -1) {
if (str.indexOf("-") != 0 || offset != 0) {
return;
}
}
super.insertString(offset, str, attr);
}
} public class Main extends JFrame{
public static void main(String[] argv) throws Exception {
new Main();
}
public Main() {
JTextField tf1, tf1b, tf1c, tf2, tf3;
JLabel l1, l1b, l1c, l2, l3;
setLayout(new FlowLayout());
//
l1 = new JLabel("only numerics");
tf1 = new JTextField(10);
getContentPane().add(l1);
getContentPane().add(tf1);
tf1.setDocument(new JTextFieldFilter(JTextFieldFilter.NUMERIC));
setSize(300,300);
setVisible(true);
}
}
</source>
A text component has an action map with actions and keymaps with actions
<source lang="java">
import javax.swing.Action; import javax.swing.JTextField; import javax.swing.text.JTextComponent; import javax.swing.text.Keymap; public class Main {
public static void main(String[] argv) throws Exception {
JTextComponent component = new JTextField();
if (component instanceof JTextComponent) {
JTextComponent textComp = (JTextComponent) component;
Keymap keymap = textComp.getKeymap();
while (keymap != null) {
Action[] actions = keymap.getBoundActions();
for (int i = 0; i < actions.length; i++) {
Action action = actions[i];
}
Action defaultAction = keymap.getDefaultAction();
keymap = keymap.getResolveParent();
}
}
}
}
</source>
Creating an Action
<source lang="java">
import java.awt.event.ActionEvent; import javax.swing.AbstractAction; import javax.swing.Action; import javax.swing.Icon; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.KeyStroke; public class Main {
public static void main(String[] argv) throws Exception {
final Action action = new AbstractAction("Action Name") {
{
putValue(Action.SHORT_DESCRIPTION, "Tool Tip Text");
putValue(Action.LONG_DESCRIPTION, "Help Text");
Icon icon = new ImageIcon("icon.gif");
putValue(Action.SMALL_ICON, icon);
putValue(Action.MNEMONIC_KEY, new Integer(java.awt.event.KeyEvent.VK_A));
putValue(Action.ACCELERATOR_KEY, KeyStroke.getKeyStroke("control F2"));
}
public void actionPerformed(ActionEvent evt) {
System.out.println("action");
}
};
JButton button = new JButton(action);
}
}
</source>
Enabling an Action
<source lang="java">
import java.awt.event.ActionEvent; import javax.swing.AbstractAction; import javax.swing.Action; import javax.swing.JButton; import javax.swing.JComponent; import javax.swing.JFrame; import javax.swing.JTextField; import javax.swing.KeyStroke; public class Main {
public static void main(String[] argv) throws Exception {
final Action action = new AbstractAction("Action Name") {
public void actionPerformed(ActionEvent evt) {
System.out.println("action");
}
};
JFrame frame = new JFrame();
JButton button = new JButton(action);
JTextField textfield = new JTextField();
textfield.getInputMap(JComponent.WHEN_FOCUSED).put(KeyStroke.getKeyStroke("F2"),
action.getValue(Action.NAME));
textfield.getActionMap().put(action.getValue(Action.NAME), action);
}
}
</source>
Listing the Actions in a Component
<source lang="java">
import javax.swing.Action; import javax.swing.ActionMap; import javax.swing.JButton; public class Main {
public static void main(String[] argv) throws Exception {
JButton component = new JButton("button");
ActionMap map = component.getActionMap();
list(map, map.keys());
list(map, map.allKeys());
}
static void list(ActionMap map, Object[] actionKeys) {
if (actionKeys == null) {
return;
}
for (int i = 0; i < actionKeys.length; i++) {
// Get the action bound to this action key
while (map.get(actionKeys[i]) == null) {
map = map.getParent();
}
Action action = (Action) map.get(actionKeys[i]);
}
}
}
</source>
Listing the Key Bindings in a Component
<source lang="java">
import java.awt.event.InputEvent; import java.awt.event.KeyEvent; import javax.swing.Action; import javax.swing.InputMap; import javax.swing.JButton; import javax.swing.JComponent; import javax.swing.KeyStroke; public class Main {
public static void main(String[] argv) throws Exception {
JButton component = new JButton("button");
InputMap map = component.getInputMap(JComponent.WHEN_FOCUSED);
list(map, map.keys());
list(map, map.allKeys());
}
static void list(InputMap map, KeyStroke[] keys) {
if (keys == null) {
return;
}
for (int i = 0; i < keys.length; i++) {
keyStroke2String(keys[i]);
while (map.get(keys[i]) == null) {
map = map.getParent();
}
if (map.get(keys[i]) instanceof String) {
String actionName = (String) map.get(keys[i]);
System.out.println(actionName);
} else {
Action action = (Action) map.get(keys[i]);
System.out.println(action);
}
}
}
static void keyStroke2String(KeyStroke key) {
int m = key.getModifiers();
if ((m & (InputEvent.SHIFT_DOWN_MASK | InputEvent.SHIFT_MASK)) != 0) {
System.out.println("shift ");
}
if ((m & (InputEvent.CTRL_DOWN_MASK | InputEvent.CTRL_MASK)) != 0) {
System.out.println("ctrl ");
}
if ((m & (InputEvent.META_DOWN_MASK | InputEvent.META_MASK)) != 0) {
System.out.println("meta ");
}
if ((m & (InputEvent.ALT_DOWN_MASK | InputEvent.ALT_MASK)) != 0) {
System.out.println("alt ");
}
if ((m & (InputEvent.BUTTON1_DOWN_MASK | InputEvent.BUTTON1_MASK)) != 0) {
System.out.println("button1 ");
}
if ((m & (InputEvent.BUTTON2_DOWN_MASK | InputEvent.BUTTON2_MASK)) != 0) {
System.out.println("button2 ");
}
if ((m & (InputEvent.BUTTON3_DOWN_MASK | InputEvent.BUTTON3_MASK)) != 0) {
System.out.println("button3 ");
}
switch (key.getKeyEventType()) {
case KeyEvent.KEY_TYPED:
System.out.println("typed ");
System.out.println(key.getKeyChar() + " ");
break;
case KeyEvent.KEY_PRESSED:
System.out.println("pressed ");
System.out.println(getKeyText(key.getKeyCode()) + " ");
break;
case KeyEvent.KEY_RELEASED:
System.out.println("released ");
System.out.println(getKeyText(key.getKeyCode()) + " ");
break;
default:
System.out.println("unknown-event-type ");
break;
}
}
static String getKeyText(int keyCode) {
if (keyCode >= KeyEvent.VK_0 && keyCode <= KeyEvent.VK_9 || keyCode >= KeyEvent.VK_A
&& keyCode <= KeyEvent.VK_Z) {
return String.valueOf((char) keyCode);
}
switch (keyCode) {
case KeyEvent.VK_COMMA:
return "COMMA";
case KeyEvent.VK_PERIOD:
return "PERIOD";
case KeyEvent.VK_SLASH:
return "SLASH";
case KeyEvent.VK_SEMICOLON:
return "SEMICOLON";
case KeyEvent.VK_EQUALS:
return "EQUALS";
case KeyEvent.VK_OPEN_BRACKET:
return "OPEN_BRACKET";
case KeyEvent.VK_BACK_SLASH:
return "BACK_SLASH";
case KeyEvent.VK_CLOSE_BRACKET:
return "CLOSE_BRACKET";
case KeyEvent.VK_ENTER:
return "ENTER";
case KeyEvent.VK_BACK_SPACE:
return "BACK_SPACE";
case KeyEvent.VK_TAB:
return "TAB";
case KeyEvent.VK_CANCEL:
return "CANCEL";
case KeyEvent.VK_CLEAR:
return "CLEAR";
case KeyEvent.VK_SHIFT:
return "SHIFT";
case KeyEvent.VK_CONTROL:
return "CONTROL";
case KeyEvent.VK_ALT:
return "ALT";
case KeyEvent.VK_PAUSE:
return "PAUSE";
case KeyEvent.VK_CAPS_LOCK:
return "CAPS_LOCK";
case KeyEvent.VK_ESCAPE:
return "ESCAPE";
case KeyEvent.VK_SPACE:
return "SPACE";
case KeyEvent.VK_PAGE_UP:
return "PAGE_UP";
case KeyEvent.VK_PAGE_DOWN:
return "PAGE_DOWN";
case KeyEvent.VK_END:
return "END";
case KeyEvent.VK_HOME:
return "HOME";
case KeyEvent.VK_LEFT:
return "LEFT";
case KeyEvent.VK_UP:
return "UP";
case KeyEvent.VK_RIGHT:
return "RIGHT";
case KeyEvent.VK_DOWN:
return "DOWN";
// numpad numeric keys handled below
case KeyEvent.VK_MULTIPLY:
return "MULTIPLY";
case KeyEvent.VK_ADD:
return "ADD";
case KeyEvent.VK_SEPARATOR:
return "SEPARATOR";
case KeyEvent.VK_SUBTRACT:
return "SUBTRACT";
case KeyEvent.VK_DECIMAL:
return "DECIMAL";
case KeyEvent.VK_DIVIDE:
return "DIVIDE";
case KeyEvent.VK_DELETE:
return "DELETE";
case KeyEvent.VK_NUM_LOCK:
return "NUM_LOCK";
case KeyEvent.VK_SCROLL_LOCK:
return "SCROLL_LOCK";
case KeyEvent.VK_F1:
return "F1";
case KeyEvent.VK_F2:
return "F2";
case KeyEvent.VK_F3:
return "F3";
case KeyEvent.VK_F4:
return "F4";
case KeyEvent.VK_F5:
return "F5";
case KeyEvent.VK_F6:
return "F6";
case KeyEvent.VK_F7:
return "F7";
case KeyEvent.VK_F8:
return "F8";
case KeyEvent.VK_F9:
return "F9";
case KeyEvent.VK_F10:
return "F10";
case KeyEvent.VK_F11:
return "F11";
case KeyEvent.VK_F12:
return "F12";
case KeyEvent.VK_F13:
return "F13";
case KeyEvent.VK_F14:
return "F14";
case KeyEvent.VK_F15:
return "F15";
case KeyEvent.VK_F16:
return "F16";
case KeyEvent.VK_F17:
return "F17";
case KeyEvent.VK_F18:
return "F18";
case KeyEvent.VK_F19:
return "F19";
case KeyEvent.VK_F20:
return "F20";
case KeyEvent.VK_F21:
return "F21";
case KeyEvent.VK_F22:
return "F22";
case KeyEvent.VK_F23:
return "F23";
case KeyEvent.VK_F24:
return "F24";
case KeyEvent.VK_PRINTSCREEN:
return "PRINTSCREEN";
case KeyEvent.VK_INSERT:
return "INSERT";
case KeyEvent.VK_HELP:
return "HELP";
case KeyEvent.VK_META:
return "META";
case KeyEvent.VK_BACK_QUOTE:
return "BACK_QUOTE";
case KeyEvent.VK_QUOTE:
return "QUOTE";
case KeyEvent.VK_KP_UP:
return "KP_UP";
case KeyEvent.VK_KP_DOWN:
return "KP_DOWN";
case KeyEvent.VK_KP_LEFT:
return "KP_LEFT";
case KeyEvent.VK_KP_RIGHT:
return "KP_RIGHT";
case KeyEvent.VK_DEAD_GRAVE:
return "DEAD_GRAVE";
case KeyEvent.VK_DEAD_ACUTE:
return "DEAD_ACUTE";
case KeyEvent.VK_DEAD_CIRCUMFLEX:
return "DEAD_CIRCUMFLEX";
case KeyEvent.VK_DEAD_TILDE:
return "DEAD_TILDE";
case KeyEvent.VK_DEAD_MACRON:
return "DEAD_MACRON";
case KeyEvent.VK_DEAD_BREVE:
return "DEAD_BREVE";
case KeyEvent.VK_DEAD_ABOVEDOT:
return "DEAD_ABOVEDOT";
case KeyEvent.VK_DEAD_DIAERESIS:
return "DEAD_DIAERESIS";
case KeyEvent.VK_DEAD_ABOVERING:
return "DEAD_ABOVERING";
case KeyEvent.VK_DEAD_DOUBLEACUTE:
return "DEAD_DOUBLEACUTE";
case KeyEvent.VK_DEAD_CARON:
return "DEAD_CARON";
case KeyEvent.VK_DEAD_CEDILLA:
return "DEAD_CEDILLA";
case KeyEvent.VK_DEAD_OGONEK:
return "DEAD_OGONEK";
case KeyEvent.VK_DEAD_IOTA:
return "DEAD_IOTA";
case KeyEvent.VK_DEAD_VOICED_SOUND:
return "DEAD_VOICED_SOUND";
case KeyEvent.VK_DEAD_SEMIVOICED_SOUND:
return "DEAD_SEMIVOICED_SOUND";
case KeyEvent.VK_AMPERSAND:
return "AMPERSAND";
case KeyEvent.VK_ASTERISK:
return "ASTERISK";
case KeyEvent.VK_QUOTEDBL:
return "QUOTEDBL";
case KeyEvent.VK_LESS:
return "LESS";
case KeyEvent.VK_GREATER:
return "GREATER";
case KeyEvent.VK_BRACELEFT:
return "BRACELEFT";
case KeyEvent.VK_BRACERIGHT:
return "BRACERIGHT";
case KeyEvent.VK_AT:
return "AT";
case KeyEvent.VK_COLON:
return "COLON";
case KeyEvent.VK_CIRCUMFLEX:
return "CIRCUMFLEX";
case KeyEvent.VK_DOLLAR:
return "DOLLAR";
case KeyEvent.VK_EURO_SIGN:
return "EURO_SIGN";
case KeyEvent.VK_EXCLAMATION_MARK:
return "EXCLAMATION_MARK";
case KeyEvent.VK_INVERTED_EXCLAMATION_MARK:
return "INVERTED_EXCLAMATION_MARK";
case KeyEvent.VK_LEFT_PARENTHESIS:
return "LEFT_PARENTHESIS";
case KeyEvent.VK_NUMBER_SIGN:
return "NUMBER_SIGN";
case KeyEvent.VK_MINUS:
return "MINUS";
case KeyEvent.VK_PLUS:
return "PLUS";
case KeyEvent.VK_RIGHT_PARENTHESIS:
return "RIGHT_PARENTHESIS";
case KeyEvent.VK_UNDERSCORE:
return "UNDERSCORE";
case KeyEvent.VK_FINAL:
return "FINAL";
case KeyEvent.VK_CONVERT:
return "CONVERT";
case KeyEvent.VK_NONCONVERT:
return "NONCONVERT";
case KeyEvent.VK_ACCEPT:
return "ACCEPT";
case KeyEvent.VK_MODECHANGE:
return "MODECHANGE";
case KeyEvent.VK_KANA:
return "KANA";
case KeyEvent.VK_KANJI:
return "KANJI";
case KeyEvent.VK_ALPHANUMERIC:
return "ALPHANUMERIC";
case KeyEvent.VK_KATAKANA:
return "KATAKANA";
case KeyEvent.VK_HIRAGANA:
return "HIRAGANA";
case KeyEvent.VK_FULL_WIDTH:
return "FULL_WIDTH";
case KeyEvent.VK_HALF_WIDTH:
return "HALF_WIDTH";
case KeyEvent.VK_ROMAN_CHARACTERS:
return "ROMAN_CHARACTERS";
case KeyEvent.VK_ALL_CANDIDATES:
return "ALL_CANDIDATES";
case KeyEvent.VK_PREVIOUS_CANDIDATE:
return "PREVIOUS_CANDIDATE";
case KeyEvent.VK_CODE_INPUT:
return "CODE_INPUT";
case KeyEvent.VK_JAPANESE_KATAKANA:
return "JAPANESE_KATAKANA";
case KeyEvent.VK_JAPANESE_HIRAGANA:
return "JAPANESE_HIRAGANA";
case KeyEvent.VK_JAPANESE_ROMAN:
return "JAPANESE_ROMAN";
case KeyEvent.VK_KANA_LOCK:
return "KANA_LOCK";
case KeyEvent.VK_INPUT_METHOD_ON_OFF:
return "INPUT_METHOD_ON_OFF";
case KeyEvent.VK_AGAIN:
return "AGAIN";
case KeyEvent.VK_UNDO:
return "UNDO";
case KeyEvent.VK_COPY:
return "COPY";
case KeyEvent.VK_PASTE:
return "PASTE";
case KeyEvent.VK_CUT:
return "CUT";
case KeyEvent.VK_FIND:
return "FIND";
case KeyEvent.VK_PROPS:
return "PROPS";
case KeyEvent.VK_STOP:
return "STOP";
case KeyEvent.VK_COMPOSE:
return "COMPOSE";
case KeyEvent.VK_ALT_GRAPH:
return "ALT_GRAPH";
}
if (keyCode >= KeyEvent.VK_NUMPAD0 && keyCode <= KeyEvent.VK_NUMPAD9) {
char c = (char) (keyCode - KeyEvent.VK_NUMPAD0 + "0");
return "NUMPAD" + c;
}
return "unknown(0x" + Integer.toString(keyCode, 16) + ")";
}
}
</source>
Sharing an InputMap or an ActionMap Between Two Components
<source lang="java">
import java.awt.event.ActionEvent; import javax.swing.AbstractAction; import javax.swing.ActionMap; import javax.swing.InputMap; import javax.swing.JButton; import javax.swing.JComponent; import javax.swing.JTextArea; import javax.swing.KeyStroke; import javax.swing.text.JTextComponent; public class Main {
public static void main(String[] argv) {
InputMap im = new JTextArea().getInputMap(JComponent.WHEN_FOCUSED);
im.put(KeyStroke.getKeyStroke("F2"), "actionName");
ActionMap am = new JTextArea().getActionMap();
am.put("actionName", new AbstractAction("actionName") {
public void actionPerformed(ActionEvent evt) {
System.out.println((JTextComponent) evt.getSource());
}
});
im.put(KeyStroke.getKeyStroke("F3"), "actionName2");
am.put("actionName2", new AbstractAction("actionName2") {
public void actionPerformed(ActionEvent evt) {
System.out.println((JTextComponent) evt.getSource());
}
});
JButton component1 = new JButton("button 1");
JButton component2 = new JButton("button 2");
component1.setInputMap(JComponent.WHEN_FOCUSED, im);
component2.setInputMap(JComponent.WHEN_FOCUSED, im);
component1.setActionMap(am);
component2.setActionMap(am);
}
}
</source>
