ToolbarDemo.java Source code

Introduction

Here is the source code for ToolbarDemo.java

Source

import java.awt.BorderLayout;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;

import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.ButtonGroup;
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.JRadioButtonMenuItem;
import javax.swing.JToolBar;

public class ToolbarDemo extends JFrame {

    public static final String FontNames[] = { "Serif", "SansSerif", "Courier" };

    protected Font fonts[];

    protected JMenuItem[] fontMenus;

    protected JCheckBoxMenuItem boldMenu = new JCheckBoxMenuItem("Bold");

    protected JCheckBoxMenuItem italicMenu = new JCheckBoxMenuItem("Italic");

    protected JToolBar toolBar;

    public ToolbarDemo() {
        super("Toolbars & actions");
        setSize(450, 350);

        fonts = new Font[FontNames.length];
        for (int i = 0; i < FontNames.length; i++)
            fonts[i] = new Font(FontNames[i], Font.PLAIN, 12);

        JMenuBar menuBar = createMenuBar();
        setJMenuBar(menuBar);

        WindowListener wndCloser = new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        };
        addWindowListener(wndCloser);

        updateMonitor();
        setVisible(true);
    }

    protected JMenuBar createMenuBar() {
        final JMenuBar menuBar = new JMenuBar();

        JMenu mFile = new JMenu("File");
        mFile.setMnemonic('f');

        ImageIcon iconNew = new ImageIcon("file_new.gif");
        Action actionNew = new AbstractAction("New", iconNew) {
            public void actionPerformed(ActionEvent e) {
                System.out.println("new action");
            }
        };
        JMenuItem item = mFile.add(actionNew);
        mFile.add(item);

        ImageIcon iconOpen = new ImageIcon("file_open.gif");
        Action actionOpen = new AbstractAction("Open...", iconOpen) {
            public void actionPerformed(ActionEvent e) {
                System.out.println("open action");
            }
        };
        item = mFile.add(actionOpen);
        mFile.add(item);

        ImageIcon iconSave = new ImageIcon("file_save.gif");
        Action actionSave = new AbstractAction("Save...", iconSave) {
            public void actionPerformed(ActionEvent e) {
                System.out.println("save action");
            }
        };
        item = mFile.add(actionSave);
        mFile.add(item);

        mFile.addSeparator();

        Action actionExit = new AbstractAction("Exit") {
            public void actionPerformed(ActionEvent e) {
                System.exit(0);
            }
        };
        item = mFile.add(actionExit);
        item.setMnemonic('x');
        menuBar.add(mFile);

        toolBar = new JToolBar();
        JButton btn1 = toolBar.add(actionNew);
        btn1.setToolTipText("New text");
        JButton btn2 = toolBar.add(actionOpen);
        btn2.setToolTipText("Open text file");
        JButton btn3 = toolBar.add(actionSave);
        btn3.setToolTipText("Save text file");

        ActionListener fontListener = new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                updateMonitor();
            }
        };

        JMenu mFont = new JMenu("Font");
        mFont.setMnemonic('o');

        ButtonGroup group = new ButtonGroup();
        fontMenus = new JMenuItem[FontNames.length];
        for (int k = 0; k < FontNames.length; k++) {
            int m = k + 1;
            fontMenus[k] = new JRadioButtonMenuItem(m + " " + FontNames[k]);
            boolean selected = (k == 0);
            fontMenus[k].setSelected(selected);
            fontMenus[k].setMnemonic('1' + k);
            fontMenus[k].setFont(fonts[k]);
            fontMenus[k].addActionListener(fontListener);
            group.add(fontMenus[k]);
            mFont.add(fontMenus[k]);
        }

        mFont.addSeparator();

        boldMenu.setMnemonic('b');
        Font fn = fonts[1].deriveFont(Font.BOLD);
        boldMenu.setFont(fn);
        boldMenu.setSelected(false);
        boldMenu.addActionListener(fontListener);
        mFont.add(boldMenu);

        italicMenu.setMnemonic('i');
        fn = fonts[1].deriveFont(Font.ITALIC);
        italicMenu.setFont(fn);
        italicMenu.setSelected(false);
        italicMenu.addActionListener(fontListener);
        mFont.add(italicMenu);

        menuBar.add(mFont);

        getContentPane().add(toolBar, BorderLayout.NORTH);

        return menuBar;
    }

    protected void updateMonitor() {
        int index = -1;
        for (int k = 0; k < fontMenus.length; k++) {
            if (fontMenus[k].isSelected()) {
                index = k;
                break;
            }
        }
        if (index == -1)
            return;

        if (index == 2) // Courier
        {
            boldMenu.setSelected(false);
            boldMenu.setEnabled(false);
            italicMenu.setSelected(false);
            italicMenu.setEnabled(false);
        } else {
            boldMenu.setEnabled(true);
            italicMenu.setEnabled(true);
        }

        int style = Font.PLAIN;
        if (boldMenu.isSelected())
            style |= Font.BOLD;
        if (italicMenu.isSelected())
            style |= Font.ITALIC;
        Font fn = fonts[index].deriveFont(style);
    }

    public static void main(String argv[]) {
        new ToolbarDemo();
    }
}