Java by API/javax.swing/Action
Содержание
Action.MNEMONIC_KEY
<source lang="java">
import java.awt.BorderLayout; import java.awt.Color; import java.awt.ruponent; import java.awt.Container; import java.awt.EventQueue; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyEvent; import javax.swing.AbstractAction; import javax.swing.Action; import javax.swing.Icon; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JOptionPane; import javax.swing.JScrollPane; import javax.swing.JTextArea; import javax.swing.JToolBar; import javax.swing.plaf.metal.MetalIconFactory; public class MainClass {
public static void main(String[] a) {
final int STRING_POSITION = 1;
Object buttonColors[][] = { { Color.RED, "RED" }, { Color.BLUE, "BLUE" },
{ Color.GREEN, "GREEN" }, { Color.BLACK, "BLACK" }, null, // separator
{ Color.CYAN, "CYAN" } };
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
ActionListener actionListener = new TheActionListener();
JToolBar toolbar = new JToolBar();
toolbar.setRollover(true);
for (Object[] color : buttonColors) {
if (color == null) {
toolbar.addSeparator();
} else {
Icon icon = MetalIconFactory.getTreeComputerIcon();
JButton button = new JButton(icon);
button.setActionCommand((String) color[STRING_POSITION]);
button.addActionListener(actionListener);
toolbar.add(button);
}
}
Action action = new ShowAction(toolbar);
JButton button = new JButton(action);
toolbar.add(button);
Container contentPane = frame.getContentPane();
contentPane.add(toolbar, BorderLayout.NORTH);
JTextArea textArea = new JTextArea();
JScrollPane pane = new JScrollPane(textArea);
contentPane.add(pane, BorderLayout.CENTER);
frame.setSize(350, 150);
frame.setVisible(true);
}
public static class TheActionListener implements ActionListener {
public void actionPerformed(ActionEvent actionEvent) {
System.out.println(actionEvent.getActionCommand());
}
};
} class ShowAction extends AbstractAction {
Component parentComponent;
public ShowAction(Component parentComponent) {
super("About");
putValue(Action.MNEMONIC_KEY, new Integer(KeyEvent.VK_A));
putValue(Action.SMALL_ICON, MetalIconFactory.getFileChooserHomeFolderIcon());
this.parentComponent = parentComponent;
}
public void actionPerformed(ActionEvent actionEvent) {
JOptionPane.showMessageDialog(parentComponent, "About Swing",
"About Box V2.0", JOptionPane.INFORMATION_MESSAGE);
}
}
</source>
Action.NAME
<source lang="java">
import java.awt.BorderLayout; import java.awt.Font; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.KeyEvent; import javax.swing.AbstractAction; import javax.swing.Action; import javax.swing.BorderFactory; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JMenu; import javax.swing.JMenuBar; import javax.swing.JMenuItem; import javax.swing.JPanel; public class MainClass extends JFrame {
public static final int MIN_NUMBER = 2;
public static final int MAX_NUMBER = 13;
private int currentNumber = MIN_NUMBER;
private int favoriteNumber = 9;
private JLabel numberLabel = new JLabel();
private Action upAction = new UpAction();
private Action downAction = new DownAction();
private GotoFavoriteAction gotoFavoriteAction = new GotoFavoriteAction();
private Action setFavoriteAction = new SetFavoriteAction();
public class UpAction extends AbstractAction {
public UpAction() {
putValue(NAME, "Number Add");
putValue(SMALL_ICON, new ImageIcon("images/up.gif"));
putValue(SHORT_DESCRIPTION, "Increment the number");
putValue(MNEMONIC_KEY, new Integer(KeyEvent.VK_A));
}
public void actionPerformed(ActionEvent ae) {
setChannel(currentNumber + 1);
}
}
public class DownAction extends AbstractAction {
public DownAction() {
putValue(NAME, "Number Down");
putValue(SMALL_ICON, new ImageIcon("images/down.gif"));
putValue(SHORT_DESCRIPTION, "Decrement the number");
putValue(MNEMONIC_KEY, new Integer(KeyEvent.VK_D));
}
public void actionPerformed(ActionEvent ae) {
setChannel(currentNumber - 1);
}
}
public class GotoFavoriteAction extends AbstractAction {
public GotoFavoriteAction() {
putValue(SMALL_ICON, new ImageIcon("images/fav.gif"));
putValue(MNEMONIC_KEY, new Integer(KeyEvent.VK_G));
updateProperties();
}
public void updateProperties() {
putValue(NAME, "Go to number " + favoriteNumber);
putValue(SHORT_DESCRIPTION, "Change the number to " + favoriteNumber);
}
public void actionPerformed(ActionEvent ae) {
setChannel(favoriteNumber);
}
}
public class SetFavoriteAction extends AbstractAction {
public SetFavoriteAction() {
putValue(NAME, "Set "Go to" number");
putValue(SMALL_ICON, new ImageIcon("images/set.gif"));
putValue(SHORT_DESCRIPTION, "Make current number the Favorite number");
putValue(MNEMONIC_KEY, new Integer(KeyEvent.VK_S));
}
public void actionPerformed(ActionEvent ae) {
favoriteNumber = currentNumber;
gotoFavoriteAction.updateProperties();
setEnabled(false);
gotoFavoriteAction.setEnabled(false);
}
}
public MainClass() {
super();
setChannel(currentNumber);
numberLabel.setHorizontalAlignment(JLabel.CENTER);
numberLabel.setFont(new Font("Serif", Font.PLAIN, 32));
getContentPane().add(numberLabel, BorderLayout.NORTH);
JPanel buttonPanel = new JPanel(new GridLayout(2, 2, 16, 6));
buttonPanel.setBorder(BorderFactory.createEmptyBorder(6, 16, 16, 16));
getContentPane().add(buttonPanel, BorderLayout.CENTER);
buttonPanel.add(new JButton(upAction));
buttonPanel.add(new JButton(gotoFavoriteAction));
buttonPanel.add(new JButton(downAction));
buttonPanel.add(new JButton(setFavoriteAction));
JMenuBar mb = new JMenuBar();
JMenu menu = new JMenu("Number");
menu.add(new JMenuItem(upAction));
menu.add(new JMenuItem(downAction));
menu.addSeparator();
menu.add(new JMenuItem(gotoFavoriteAction));
menu.add(new JMenuItem(setFavoriteAction));
mb.add(menu);
setJMenuBar(mb);
}
public void setChannel(int chan) {
currentNumber = chan;
numberLabel.setText("Now tuned to number: " + currentNumber);
downAction.setEnabled(currentNumber > MIN_NUMBER);
upAction.setEnabled(currentNumber < MAX_NUMBER);
gotoFavoriteAction.setEnabled(currentNumber != favoriteNumber);
setFavoriteAction.setEnabled(currentNumber != favoriteNumber);
}
public static void main(String argv[]) {
JFrame f = new MainClass();
f.setSize(400, 180);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setVisible(true);
}
}
</source>
Action: setEnabled(boolean b)
<source lang="java">
import java.awt.BorderLayout; import java.awt.Font; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.KeyEvent; import javax.swing.AbstractAction; import javax.swing.Action; import javax.swing.BorderFactory; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JMenu; import javax.swing.JMenuBar; import javax.swing.JMenuItem; import javax.swing.JPanel; public class MainClass extends JFrame {
public static final int MIN_NUMBER = 2;
public static final int MAX_NUMBER = 13;
private int currentNumber = MIN_NUMBER;
private int favoriteNumber = 9;
private JLabel numberLabel = new JLabel();
private Action upAction = new UpAction();
private Action downAction = new DownAction();
private GotoFavoriteAction gotoFavoriteAction = new GotoFavoriteAction();
private Action setFavoriteAction = new SetFavoriteAction();
public class UpAction extends AbstractAction {
public UpAction() {
putValue(NAME, "Number Add");
putValue(SMALL_ICON, new ImageIcon("images/up.gif"));
putValue(SHORT_DESCRIPTION, "Increment the number");
putValue(MNEMONIC_KEY, new Integer(KeyEvent.VK_A));
}
public void actionPerformed(ActionEvent ae) {
setChannel(currentNumber + 1);
}
}
public class DownAction extends AbstractAction {
public DownAction() {
putValue(NAME, "Number Down");
putValue(SMALL_ICON, new ImageIcon("images/down.gif"));
putValue(SHORT_DESCRIPTION, "Decrement the number");
putValue(MNEMONIC_KEY, new Integer(KeyEvent.VK_D));
}
public void actionPerformed(ActionEvent ae) {
setChannel(currentNumber - 1);
}
}
public class GotoFavoriteAction extends AbstractAction {
public GotoFavoriteAction() {
putValue(SMALL_ICON, new ImageIcon("images/fav.gif"));
putValue(MNEMONIC_KEY, new Integer(KeyEvent.VK_G));
updateProperties();
}
public void updateProperties() {
putValue(NAME, "Go to number " + favoriteNumber);
putValue(SHORT_DESCRIPTION, "Change the number to " + favoriteNumber);
}
public void actionPerformed(ActionEvent ae) {
setChannel(favoriteNumber);
}
}
public class SetFavoriteAction extends AbstractAction {
public SetFavoriteAction() {
putValue(NAME, "Set "Go to" number");
putValue(SMALL_ICON, new ImageIcon("images/set.gif"));
putValue(SHORT_DESCRIPTION, "Make current number the Favorite number");
putValue(MNEMONIC_KEY, new Integer(KeyEvent.VK_S));
}
public void actionPerformed(ActionEvent ae) {
favoriteNumber = currentNumber;
gotoFavoriteAction.updateProperties();
setEnabled(false);
gotoFavoriteAction.setEnabled(false);
}
}
public MainClass() {
super();
setChannel(currentNumber);
numberLabel.setHorizontalAlignment(JLabel.CENTER);
numberLabel.setFont(new Font("Serif", Font.PLAIN, 32));
getContentPane().add(numberLabel, BorderLayout.NORTH);
JPanel buttonPanel = new JPanel(new GridLayout(2, 2, 16, 6));
buttonPanel.setBorder(BorderFactory.createEmptyBorder(6, 16, 16, 16));
getContentPane().add(buttonPanel, BorderLayout.CENTER);
buttonPanel.add(new JButton(upAction));
buttonPanel.add(new JButton(gotoFavoriteAction));
buttonPanel.add(new JButton(downAction));
buttonPanel.add(new JButton(setFavoriteAction));
JMenuBar mb = new JMenuBar();
JMenu menu = new JMenu("Number");
menu.add(new JMenuItem(upAction));
menu.add(new JMenuItem(downAction));
menu.addSeparator();
menu.add(new JMenuItem(gotoFavoriteAction));
menu.add(new JMenuItem(setFavoriteAction));
mb.add(menu);
setJMenuBar(mb);
}
public void setChannel(int chan) {
currentNumber = chan;
numberLabel.setText("Now tuned to number: " + currentNumber);
downAction.setEnabled(currentNumber > MIN_NUMBER);
upAction.setEnabled(currentNumber < MAX_NUMBER);
gotoFavoriteAction.setEnabled(currentNumber != favoriteNumber);
setFavoriteAction.setEnabled(currentNumber != favoriteNumber);
}
public static void main(String argv[]) {
JFrame f = new MainClass();
f.setSize(400, 180);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setVisible(true);
}
}
</source>
Action.SHORT_DESCRIPTION
<source lang="java">
import java.awt.BorderLayout; import java.awt.ruponent; import java.awt.Graphics; 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.Icon; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JMenu; import javax.swing.JMenuBar; import javax.swing.JMenuItem; import javax.swing.KeyStroke; public class MainClass {
public static void main(String args[]) {
JFrame frame = new JFrame("Mnemonic/Accelerator Sample");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
final Action printAction = new PrintHelloAction();
JMenuBar menuBar = new JMenuBar();
JMenu menu = new JMenu("File");
menuBar.add(menu);
JMenuItem menuItem = new JMenuItem("Print");
KeyStroke ctrlP = KeyStroke.getKeyStroke(KeyEvent.VK_P,
InputEvent.CTRL_MASK);
menuItem.setAccelerator(ctrlP);
menuItem.addActionListener(printAction);
menu.add(menuItem);
JButton fileButton = new JButton("About");
fileButton.setMnemonic(KeyEvent.VK_A);
fileButton.addActionListener(printAction);
frame.setJMenuBar(menuBar);
frame.add(fileButton, BorderLayout.SOUTH);
frame.setSize(300, 100);
frame.setVisible(true);
}
} class PrintHelloAction extends AbstractAction {
private static final Icon printIcon = new MyIcon();
PrintHelloAction() {
super("Print", printIcon);
putValue(Action.SHORT_DESCRIPTION, "Hello, World");
}
public void actionPerformed(ActionEvent actionEvent) {
System.out.println("Hello, World");
}
} class MyIcon implements Icon {
public int getIconWidth() {
return 32;
}
public int getIconHeight() {
return 32;
}
public void paintIcon(Component c, Graphics g, int x, int y) {
g.drawString("jexp.ru", 0, 20);
}
}
</source>
Action.SMALL_ICON
<source lang="java">
import java.awt.BorderLayout; import java.awt.Color; import java.awt.ruponent; import java.awt.Container; import java.awt.EventQueue; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyEvent; import javax.swing.AbstractAction; import javax.swing.Action; import javax.swing.Icon; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JOptionPane; import javax.swing.JScrollPane; import javax.swing.JTextArea; import javax.swing.JToolBar; import javax.swing.plaf.metal.MetalIconFactory; public class MainClass {
public static void main(String[] a) {
final int STRING_POSITION = 1;
Object buttonColors[][] = { { Color.RED, "RED" }, { Color.BLUE, "BLUE" },
{ Color.GREEN, "GREEN" }, { Color.BLACK, "BLACK" }, null, // separator
{ Color.CYAN, "CYAN" } };
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
ActionListener actionListener = new TheActionListener();
JToolBar toolbar = new JToolBar();
toolbar.setRollover(true);
for (Object[] color : buttonColors) {
if (color == null) {
toolbar.addSeparator();
} else {
Icon icon = MetalIconFactory.getTreeComputerIcon();
JButton button = new JButton(icon);
button.setActionCommand((String) color[STRING_POSITION]);
button.addActionListener(actionListener);
toolbar.add(button);
}
}
Action action = new ShowAction(toolbar);
JButton button = new JButton(action);
toolbar.add(button);
Container contentPane = frame.getContentPane();
contentPane.add(toolbar, BorderLayout.NORTH);
JTextArea textArea = new JTextArea();
JScrollPane pane = new JScrollPane(textArea);
contentPane.add(pane, BorderLayout.CENTER);
frame.setSize(350, 150);
frame.setVisible(true);
}
public static class TheActionListener implements ActionListener {
public void actionPerformed(ActionEvent actionEvent) {
System.out.println(actionEvent.getActionCommand());
}
};
} class ShowAction extends AbstractAction {
Component parentComponent;
public ShowAction(Component parentComponent) {
super("About");
putValue(Action.MNEMONIC_KEY, new Integer(KeyEvent.VK_A));
putValue(Action.SMALL_ICON, MetalIconFactory.getFileChooserHomeFolderIcon());
this.parentComponent = parentComponent;
}
public void actionPerformed(ActionEvent actionEvent) {
JOptionPane.showMessageDialog(parentComponent, "About Swing",
"About Box V2.0", JOptionPane.INFORMATION_MESSAGE);
}
}
</source>
