Java example source code file (ChoiceKeyEventReaction.java)

This example Java source code file (ChoiceKeyEventReaction.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

applet, awt, choice, choicekeyeventreaction, end, event, flowlayout, itemlistener, keyevent, point, robot, runtimeexception, test, textfield, xtoolkit\/mtoolkit

The ChoiceKeyEventReaction.java Java example source code

/*
 * Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
  test
  @bug 6252982
  @summary PIT: Keyboard FocusTraversal not working when choice's drop-down is visible, on XToolkit
  @author andrei.dmitriev : area=awt.choice
  @run applet ChoiceKeyEventReaction.html
*/

import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
import test.java.awt.regtesthelpers.Util;

public class ChoiceKeyEventReaction extends Applet
{
    Robot robot;
    Choice choice1 = new Choice();
    Point pt;
    TextField tf = new TextField("Hi");

    boolean keyTypedOnTextField = false;
    boolean itemChanged = false;
    String toolkit;

    public void init()
    {
        toolkit = Toolkit.getDefaultToolkit().getClass().getName();
        System.out.println("Current toolkit is :" +toolkit);
        for (int i = 1; i<20; i++){
            choice1.add("item-0"+i);
        }
        tf.addKeyListener(new KeyAdapter(){
                public void keyPressed(KeyEvent ke) {
                    keyTypedOnTextField = true;
                    System.out.println(ke);
                }
            });


        choice1.addItemListener(new ItemListener() {
                public void itemStateChanged(ItemEvent e) {
                    itemChanged = true;
                    System.out.println(e);
                }
            });

        choice1.setFocusable(false);
        add(tf);
        add(choice1);
        setLayout (new FlowLayout());
    }//End  init()

    public void start ()
    {
        setSize (200,200);
        setVisible(true);
        validate();
        try{
            robot = new Robot();
            Util.waitForIdle(robot);
            moveFocusToTextField();
            testKeyOnChoice(InputEvent.BUTTON1_MASK, KeyEvent.VK_UP);
        } catch (Throwable e) {
            throw new RuntimeException("Test failed. Exception thrown: "+e);
        }
    }// start()

    public void testKeyOnChoice(int button, int key){
        pt = choice1.getLocationOnScreen();
        robot.mouseMove(pt.x + choice1.getWidth()/2, pt.y + choice1.getHeight()/2);
        Util.waitForIdle(robot);
        robot.mousePress(button);
        robot.delay(10);
        robot.mouseRelease(button);
        Util.waitForIdle(robot);

        robot.keyPress(key);
        robot.keyRelease(key);

        Util.waitForIdle(robot);

        System.out.println("keyTypedOnTextField = "+keyTypedOnTextField +": itemChanged = " + itemChanged);

        if (itemChanged){
                throw new RuntimeException("Test failed. ItemChanged event occur on Choice.");
        }

        // We may just write
        // if (toolkit.equals("sun.awt.windows.WToolkit") == keyTypedOnTextField) {fail;}
        // but  must report differently in these cases so put two separate if statements for simplicity.
        if (toolkit.equals("sun.awt.windows.WToolkit") &&
            !keyTypedOnTextField)
        {
            throw new RuntimeException("Test failed. (Win32) KeyEvent wasn't addressed to TextField. ");
        }

        if (!toolkit.equals("sun.awt.windows.WToolkit") &&
            keyTypedOnTextField)
        {
            throw new RuntimeException("Test failed. (XToolkit/MToolkit). KeyEvent was addressed to TextField.");
        }

        System.out.println("Test passed. Unfocusable Choice doesn't react on keys.");
        //close opened choice
        robot.keyPress(KeyEvent.VK_ESCAPE);
        robot.keyRelease(KeyEvent.VK_ESCAPE);
        Util.waitForIdle(robot);
    }

    public void moveFocusToTextField(){
        pt = tf.getLocationOnScreen();
        robot.mouseMove(pt.x + tf.getWidth()/2, pt.y + tf.getHeight()/2);
        Util.waitForIdle(robot);
        robot.mousePress(InputEvent.BUTTON1_MASK);
        robot.delay(10);
        robot.mouseRelease(InputEvent.BUTTON1_MASK);
        Util.waitForIdle(robot);
    }
}//:~