ToolBarTest.java Source code

Introduction

Here is the source code for ToolBarTest.java

Source

/*
   This program is a part of the companion code for Core Java 8th ed.
   (http://horstmann.com/corejava)
    
   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
    
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
    
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;

import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JPanel;
import javax.swing.JToolBar;

/**
 * @version 1.13 2007-06-12
 * @author Cay Horstmann
 */
public class ToolBarTest {
    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                ToolBarFrame frame = new ToolBarFrame();
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.setVisible(true);
            }
        });
    }
}

/**
 * A frame with a toolbar and menu for color changes.
 */
class ToolBarFrame extends JFrame {
    public ToolBarFrame() {
        setTitle("ToolBarTest");
        setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);

        // add a panel for color change

        panel = new JPanel();
        add(panel, BorderLayout.CENTER);

        // set up actions

        Action blueAction = new ColorAction("Blue", new ImageIcon("blue-ball.gif"), Color.BLUE);
        Action yellowAction = new ColorAction("Yellow", new ImageIcon("yellow-ball.gif"), Color.YELLOW);
        Action redAction = new ColorAction("Red", new ImageIcon("red-ball.gif"), Color.RED);

        Action exitAction = new AbstractAction("Exit", new ImageIcon("exit.gif")) {
            public void actionPerformed(ActionEvent event) {
                System.exit(0);
            }
        };
        exitAction.putValue(Action.SHORT_DESCRIPTION, "Exit");

        // populate tool bar

        JToolBar bar = new JToolBar();
        bar.add(blueAction);
        bar.add(yellowAction);
        bar.add(redAction);
        bar.addSeparator();
        bar.add(exitAction);
        add(bar, BorderLayout.NORTH);

        // populate menu

        JMenu menu = new JMenu("Color");
        menu.add(yellowAction);
        menu.add(blueAction);
        menu.add(redAction);
        menu.add(exitAction);
        JMenuBar menuBar = new JMenuBar();
        menuBar.add(menu);
        setJMenuBar(menuBar);
    }

    public static final int DEFAULT_WIDTH = 300;
    public static final int DEFAULT_HEIGHT = 200;

    private JPanel panel;

    /**
     * The color action sets the background of the frame to a given color.
     */
    class ColorAction extends AbstractAction {
        public ColorAction(String name, Icon icon, Color c) {
            putValue(Action.NAME, name);
            putValue(Action.SMALL_ICON, icon);
            putValue(Action.SHORT_DESCRIPTION, name + " background");
            putValue("Color", c);
        }

        public void actionPerformed(ActionEvent event) {
            Color c = (Color) getValue("Color");
            panel.setBackground(c);
        }
    }
}