ActionsMenuBar.java Source code

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Here is the source code for ActionsMenuBar.java

Source

/*
Definitive Guide to Swing for Java 2, Second Edition
By John Zukowski       
ISBN: 1-893115-78-X
Publisher: APress
*/

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemListener;
import java.util.Enumeration;
import java.util.Vector;

import javax.swing.AbstractButton;
import javax.swing.Action;
import javax.swing.BorderFactory;
import javax.swing.ButtonGroup;
import javax.swing.JEditorPane;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.JTextPane;
import javax.swing.border.Border;
import javax.swing.event.ChangeListener;
import javax.swing.text.JTextComponent;

public class ActionsMenuBar {
    public static void main(String args[]) {
        final JFrame frame = new JFrame("TextAction Usage");
        Container contentPane = frame.getContentPane();
        final JScrollPane scrollPane = new JScrollPane();
        contentPane.add(scrollPane, BorderLayout.CENTER);

        final JMenuBar menuBar = new JMenuBar();
        frame.setJMenuBar(menuBar);

        ActionListener actionListener = new ActionListener() {
            JTextComponent component;

            public void actionPerformed(ActionEvent actionEvent) {
                // Determine which component selected
                String command = actionEvent.getActionCommand();
                if (command.equals("JTextField")) {
                    component = new JTextField();
                } else if (command.equals("JPasswordField")) {
                    component = new JPasswordField();
                } else if (command.equals("JTextArea")) {
                    component = new JTextArea();
                } else if (command.equals("JTextPane")) {
                    component = new JTextPane();
                } else {
                    component = new JEditorPane();
                }
                scrollPane.setViewportView(component);
                // Process action list
                Action actions[] = component.getActions();
                menuBar.removeAll();
                menuBar.revalidate();
                JMenu menu = null;
                for (int i = 0, n = actions.length; i < n; i++) {
                    if ((i % 10) == 0) {
                        menu = new JMenu("From " + i);
                        menuBar.add(menu);
                    }
                    menu.add(actions[i]);
                }
                menuBar.revalidate();
            }
        };

        String components[] = { "JTextField", "JPasswordField", "JTextArea", "JTextPane", "JEditorPane" };
        final Container componentsContainer = RadioButtonUtils.createRadioButtonGrouping(components,
                "Pick to List Actions", actionListener);
        contentPane.add(componentsContainer, BorderLayout.WEST);

        frame.setSize(400, 300);
        frame.setVisible(true);
    }
}

class RadioButtonUtils {
    private RadioButtonUtils() {
        // private constructor so you can't create instances
    }

    public static Enumeration getSelectedElements(Container container) {
        Vector selections = new Vector();
        Component components[] = container.getComponents();
        for (int i = 0, n = components.length; i < n; i++) {
            if (components[i] instanceof AbstractButton) {
                AbstractButton button = (AbstractButton) components[i];
                if (button.isSelected()) {
                    selections.addElement(button.getText());
                }
            }
        }
        return selections.elements();
    }

    public static Container createRadioButtonGrouping(String elements[]) {
        return createRadioButtonGrouping(elements, null, null, null, null);
    }

    public static Container createRadioButtonGrouping(String elements[], String title) {
        return createRadioButtonGrouping(elements, title, null, null, null);
    }

    public static Container createRadioButtonGrouping(String elements[], String title, ItemListener itemListener) {
        return createRadioButtonGrouping(elements, title, null, itemListener, null);
    }

    public static Container createRadioButtonGrouping(String elements[], String title,
            ActionListener actionListener) {
        return createRadioButtonGrouping(elements, title, actionListener, null, null);
    }

    public static Container createRadioButtonGrouping(String elements[], String title,
            ActionListener actionListener, ItemListener itemListener) {
        return createRadioButtonGrouping(elements, title, actionListener, itemListener, null);
    }

    public static Container createRadioButtonGrouping(String elements[], String title,
            ActionListener actionListener, ItemListener itemListener, ChangeListener changeListener) {
        JPanel panel = new JPanel(new GridLayout(0, 1));
        //    If title set, create titled border
        if (title != null) {
            Border border = BorderFactory.createTitledBorder(title);
            panel.setBorder(border);
        }
        //    Create group
        ButtonGroup group = new ButtonGroup();
        JRadioButton aRadioButton;
        //    For each String passed in:
        //    Create button, add to panel, and add to group
        for (int i = 0, n = elements.length; i < n; i++) {
            aRadioButton = new JRadioButton(elements[i]);
            panel.add(aRadioButton);
            group.add(aRadioButton);
            if (actionListener != null) {
                aRadioButton.addActionListener(actionListener);
            }
            if (itemListener != null) {
                aRadioButton.addItemListener(itemListener);
            }
            if (changeListener != null) {
                aRadioButton.addChangeListener(changeListener);
            }
        }
        return panel;
    }
}