/*

 * Copyright (c) 2019, 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.

 */

import java.awt.Container;

import java.awt.event.KeyEvent;

import java.awt.Robot;

import javax.swing.JFrame;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

import javax.swing.SwingUtilities;

import javax.swing.event.DocumentEvent;

import javax.swing.event.UndoableEditEvent;

import javax.swing.event.UndoableEditListener;

import javax.swing.text.BadLocationException;

import javax.swing.text.AbstractDocument;

import javax.swing.text.Document;

import javax.swing.text.PlainDocument;

import javax.swing.undo.CompoundEdit;

import javax.swing.undo.UndoManager;

/*

 * @test

 * @key headful

 * @bug 8190763

 * @summary Class Cast Exception on (CompoundEdit) UndoableEditEvent.getEdit()

 * @run main TestCCEOnEditEvent

 */

public class TestCCEOnEditEvent {

    private Container contentPane = null;

    private JTextArea textArea = null;

    private static Robot robot;

    private static JFrame frame;

    public static void main(String[] arguments) throws Exception {

        try{

            robot = new Robot();

            robot.setAutoDelay(50);

            TestCCEOnEditEvent test = new TestCCEOnEditEvent();

            SwingUtilities.invokeAndWait(new Runnable() {

                @Override

                public void run() {

                    test.createAndShowGUI();

                }

            });

            robot.keyPress(KeyEvent.VK_ENTER);

            robot.keyRelease(KeyEvent.VK_ENTER);

            robot.waitForIdle();

        } finally {

            SwingUtilities.invokeLater(new Runnable(){

                @Override

                public void run(){

                    frame.dispose();

                }

            });

        }

    }

    public void createAndShowGUI() {

        frame = new JFrame();

        contentPane  = frame.getContentPane();

        createTextArea();

        frame.setSize(200, 200);

        frame.setVisible(true);

    }

    private void createTextArea() {

        textArea = new JTextArea("Text Area") {

            @Override

            protected Document createDefaultModel() {

                return new PlainDocument() {

                    @Override

                    protected void fireUndoableEditUpdate(UndoableEditEvent event) {

                        Object[] listeners = listenerList.getListenerList();

                        for (int index = listeners.length - 2; index >= 0; index -= 2) {

                            Object listenerType = listeners[index];

                            if (listenerType == UndoableEditListener.class) {

                                super.fireUndoableEditUpdate(event);

                            }

                        }

                    }

                };

            }

        };

        textArea.getDocument().addUndoableEditListener(new UndoManager() {

            @Override

            public void undoableEditHappened(UndoableEditEvent event) {

                CompoundEdit edit = null;

                try {

                    edit = (CompoundEdit) event.getEdit();

                }

                catch(ClassCastException e ) {

                    throw new RuntimeException("Class Cast Exception is thrown on (CompoundEdit) UndoableEditEvent.getEdit()");

                }

                AbstractDocument.DefaultDocumentEvent documentEvent =

                        (AbstractDocument.DefaultDocumentEvent) edit;

                DocumentEvent.EventType editType = documentEvent.getType();

                int editOffset = documentEvent.getOffset();

                int editLength = documentEvent.getLength();

            }

        });

        try {

            textArea.setSelectionStart(textArea.getLineEndOffset(0));

        }

        catch (BadLocationException exception) {

        }

        JScrollPane scrollPane = new JScrollPane(textArea,

                        JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,

                        JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);

        contentPane.add(scrollPane);

    }

}