Java example source code file (bug4506788.java)

This example Java source code file (bug4506788.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

awt, awtexception, defaultstyleddocument, event, gui, japplet, jeditorpane, jframe, override, point, reflection, robot, runnable, runtimeexception, simpleattributeset, string, stylededitorkit, suntoolkit, swing, text

The bug4506788.java Java example source code

/*
 * Copyright (c) 2012, 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 4506788 7147408
 @summary  Tests if cursor gets stuck after insertion a character
 @author Denis Sharypov
 @run applet bug4506788.html
 */
import java.awt.*;
import java.awt.event.*;
import java.lang.reflect.InvocationTargetException;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
import sun.awt.SunToolkit;

public class bug4506788 extends JApplet {

    private volatile boolean passed = false;
    private JEditorPane jep;
    private SunToolkit toolkit = (SunToolkit) Toolkit.getDefaultToolkit();

    @Override
    public void init() {
        try {
            SwingUtilities.invokeAndWait(new Runnable() {
                @Override
                public void run() {
                    createAndShowGUI();
                }
            });
        } catch (InterruptedException | InvocationTargetException ex) {
            ex.printStackTrace();
            throw new RuntimeException("FAILED: SwingUtilities.invokeAndWait method failed then creating and showing GUI");
        }
    }

    @Override
    public void start() {
        Robot robot;
        try {
            robot = new Robot();
        } catch (AWTException e) {
            throw new RuntimeException("Robot could not be created");
        }

        toolkit.realSync();

        Point p;
        try {
            p = getJEPLocOnScreen();
        } catch (Exception e) {
            throw new RuntimeException("Could not get JEditorPane location on screen");
        }

        robot.setAutoDelay(50);
        robot.mouseMove(p.x, p.y);
        robot.mousePress(InputEvent.BUTTON1_MASK);
        robot.mouseRelease(InputEvent.BUTTON1_MASK);
        robot.keyPress(KeyEvent.VK_RIGHT);
        robot.keyRelease(KeyEvent.VK_RIGHT);
        robot.keyPress(KeyEvent.VK_X);
        robot.keyRelease(KeyEvent.VK_X);
        robot.keyPress(KeyEvent.VK_RIGHT);
        robot.keyRelease(KeyEvent.VK_RIGHT);

        toolkit.realSync();

        if (!passed) {
            throw new RuntimeException("Test failed.");
        }
    }

    private Point getJEPLocOnScreen() throws Exception {

        final Point[] result = new Point[1];

        SwingUtilities.invokeAndWait(new Runnable() {
            @Override
            public void run() {
                result[0] = jep.getLocationOnScreen();
            }
        });

        return result[0];
    }

    private void createAndShowGUI() {
        jep = new JEditorPane();
        String text = "abc";
        JFrame f = new JFrame();
        jep.setEditorKit(new StyledEditorKit());
        jep.setText(text);
        jep.addCaretListener(new CaretListener() {
            @Override
            public void caretUpdate(CaretEvent e) {
                passed = (e.getDot() == 3);
            }
        });

        DefaultStyledDocument doc = (DefaultStyledDocument) jep.getDocument();
        MutableAttributeSet atr = new SimpleAttributeSet();
        StyleConstants.setBold(atr, true);
        doc.setCharacterAttributes(1, 1, atr, false);

        f.getContentPane().add(jep);
        f.setSize(100, 100);
        f.setVisible(true);
    }
}