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Java example source code file (GrabTest.java)

This example Java source code file (GrabTest.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

actionlistener, awt, awtexception, button, error, event, flowlayout, frame, grabtest, mouseadapter, otherframe, point, robot, runtimeexception, string, window

The GrabTest.java Java example source code

/*
 * Copyright (c) 2012, 2013, 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 7124430
  @summary Tests that SunToolkit.grab API works
  @author anton.tarasov@oracle.com: area=awt.toolkit
  @library ../../regtesthelpers
  @build Util
  @run main GrabTest
*/

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

public class GrabTest {
    private static Frame f;
    private static Frame f1;
    private static Window w;
    private static Button b;

    private static Robot robot;
    private static sun.awt.SunToolkit tk;

    static volatile boolean ungrabbed;
    static volatile boolean buttonPressed;
    static volatile boolean windowPressed;
    static volatile boolean framePressed;

    static volatile boolean passed = true;

    public static void main(String[] args) {

        Toolkit.getDefaultToolkit().addAWTEventListener(new AWTEventListener() {
                public void eventDispatched(AWTEvent e) {
                    System.out.println(e);
                    if (e instanceof sun.awt.UngrabEvent) {
                        ungrabbed = true;
                    }
                }
            }, sun.awt.SunToolkit.GRAB_EVENT_MASK);

        f = new Frame("Frame");
        f.setBounds(0, 0, 300, 300);
        f.addMouseListener(new MouseAdapter() {
                public void mousePressed(MouseEvent e) {
                    System.out.println(e);
                    framePressed = true;
                }
            });

        f1 = new Frame("OtherFrame");
        f1.setBounds(700, 100, 200, 200);

        w = new Window(f);
        w.setLayout(new FlowLayout());
        b = new Button("Press");
        b.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    System.out.println(e);
                    buttonPressed = true;
                }
            });
        w.add(b);
        w.setBounds(400, 100, 200, 200);
        w.setBackground(Color.blue);
        w.addMouseListener(new MouseAdapter() {
                public void mousePressed(MouseEvent e) {
                    System.out.println(e);
                    windowPressed = true;
                }
            });

        f.setVisible(true);
        w.setVisible(true);

        tk = (sun.awt.SunToolkit)Toolkit.getDefaultToolkit();

        try {
            robot = new Robot();
        } catch (AWTException ex) {
            throw new RuntimeException(ex);
        }

        Util.waitForIdle(robot);

        test();
    }

    public static void test() {
        tk.grab(w);

        // 1. Check that button press doesn't cause ungrab
        Util.clickOnComp(b, robot);
        Util.waitForIdle(robot);
        checkAndThrow(buttonPressed, "Error: Button can not be pressed");
        if (ungrabbed) {
            passed = false;
            tk.grab(w);
            System.err.println("Failure: [1] Press inside of Window (on Button) caused ungrab");
        }

        // 2. Check that press on the window itself doesn't cause ungrab
        Util.clickOnComp(w, robot);
        Util.waitForIdle(robot);
        checkAndThrow(windowPressed, "Error: Window can't be pressed");
        if (ungrabbed) {
            passed = false;
            tk.grab(w);
            System.err.println("Failure: [2] Press inside of Window caused ungrab");
        }

        // 3. Check that press on the frame causes ungrab, event must be dispatched
        Util.clickOnComp(f, robot);
        Util.waitForIdle(robot);
        checkAndThrow(framePressed, "Error: Frame can't be pressed");
        if (!ungrabbed) {
            passed = false;
            System.err.println("Failure: [3] Press inside of Frame didn't cause ungrab");
        }
        ungrabbed = false;
        tk.grab(w);

        // 4. Check that press on the frame's title causes ungrab
        Util.clickOnTitle(f, robot);
        Util.waitForIdle(robot);
        if (!ungrabbed) {
            passed = false;
            System.err.println("Failure: [4] Press inside of Frame's title didn't cause ungrab");
        }
        ungrabbed = false;
        tk.grab(w);


        // 5. Check that press on the other frame's title causes ungrab
        f1.setVisible(true);
        Util.waitForIdle(robot);
        Util.clickOnTitle(f1, robot);
        if (!ungrabbed) {
            passed = false;
            System.err.println("Failure: [5] Press inside of other Frame's title didn't cause ungrab");
        }
        f.requestFocus(); // restore focus
        Util.waitForIdle(robot);
        if (!f.hasFocus()) {
            System.err.println("Error: Frame can't be focused");
        }
        ungrabbed = false;
        tk.grab(w);


        // 6. Check that press on the outside area causes ungrab
        Point loc = f.getLocationOnScreen();
        robot.mouseMove(loc.x + 100, loc.y + f.getSize().height + 10);
        Util.waitForIdle(robot);
        robot.mousePress(InputEvent.BUTTON1_MASK);
        robot.delay(50);
        robot.mouseRelease(InputEvent.BUTTON1_MASK);
        Util.waitForIdle(robot);
        if (!ungrabbed) {
            passed = false;
            System.err.println("Failure: [6] Press on the outside area didn't cause ungrab");
        }
        ungrabbed = false;
        tk.grab(w);


        // 7. Check that disposing the window causes ungrab
        w.dispose();
        Util.waitForIdle(robot);
        if (!ungrabbed) {
            passed = false;
            System.err.println("Failure: [7] Window disposal didn't cause ungrab");
        }

        if (passed) {
            System.out.println("Test passed.");
        } else {
            throw new RuntimeException("Test failed.");
        }
    }

    public static void checkAndThrow(boolean condition, String msg) {
        if (!condition) {
            throw new RuntimeException(msg);
        }
    }
}

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