/*

 * 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.

 */

/*

 * Portions Copyright (c) 2012 IBM Corporation

 */

/* @test 1.1 2012/04/19

 * @bug 7055065

 * @summary NullPointerException when sorting JTable with empty cell

 * @author Jonathan Lu

 * @library ../../regtesthelpers/

 * @build Util

 * @run main bug7055065

 */

import java.awt.Dimension;

import java.awt.Point;

import java.awt.Rectangle;

import java.awt.Robot;

import java.awt.event.InputEvent;

import java.awt.event.KeyEvent;

import javax.swing.JFrame;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTable;

import javax.swing.SwingUtilities;

import javax.swing.table.AbstractTableModel;

import javax.swing.table.TableModel;

import javax.swing.table.TableRowSorter;

import java.util.concurrent.Callable;

public class bug7055065 {

    private static JTable table;

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

        Robot robot = new Robot();

        SwingUtilities.invokeAndWait(new Runnable() {

            public void run() {

                createAndShowUI();

            }

        });

        clickCell(robot, 1, 1);

        Util.hitKeys(robot, KeyEvent.VK_BACK_SPACE, KeyEvent.VK_BACK_SPACE,

                KeyEvent.VK_BACK_SPACE);

        clickColumnHeader(robot, 1);

        clickColumnHeader(robot, 1);

    }

    private static void clickCell(Robot robot, final int row, final int column)

        throws Exception {

        Point point = Util.invokeOnEDT(new Callable<Point>() {

            @Override

            public Point call() throws Exception {

                Rectangle rect = table.getCellRect(row, column, false);

                Point point = new Point(rect.x + rect.width / 2, rect.y

                    + rect.height / 2);

                SwingUtilities.convertPointToScreen(point, table);

                return point;

            }

        });

        robot.mouseMove(point.x, point.y);

        robot.mousePress(InputEvent.BUTTON1_MASK);

        robot.mouseRelease(InputEvent.BUTTON1_MASK);

    }

    private static void clickColumnHeader(Robot robot, final int column)

        throws Exception {

        Point point = Util.invokeOnEDT(new Callable<Point>() {

            @Override

            public Point call() throws Exception {

                Rectangle rect = table.getCellRect(0, column, false);

                int headerHeight = table.getTableHeader().getHeight();

                Point point = new Point(rect.x + rect.width / 2, rect.y

                    - headerHeight / 2);

                SwingUtilities.convertPointToScreen(point, table);

                return point;

            }

        });

        robot.mouseMove(point.x, point.y);

        robot.mousePress(InputEvent.BUTTON1_MASK);

        robot.mouseRelease(InputEvent.BUTTON1_MASK);

    }

    private static void createAndShowUI() {

        JFrame frame = new JFrame("SimpleTableDemo");

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JPanel newContentPane = new JPanel();

        newContentPane.setOpaque(true);

        frame.setContentPane(newContentPane);

        final String[] columnNames = { "String", "Number" };

        final Object[][] data = { { "aaaa", new Integer(1) },

            { "bbbb", new Integer(3) }, { "cccc", new Integer(2) },

            { "dddd", new Integer(4) }, { "eeee", new Integer(5) } };

        table = new JTable(data, columnNames);

        table.setPreferredScrollableViewportSize(new Dimension(500, 400));

        table.setFillsViewportHeight(true);

        TableModel dataModel = new AbstractTableModel() {

            public int getColumnCount() {

                return columnNames.length;

            }

            public int getRowCount() {

                return data.length;

            }

            public Object getValueAt(int row, int col) {

                return data[row][col];

            }

            public String getColumnName(int column) {

                return columnNames[column];

            }

            public Class<?> getColumnClass(int c) {

                return getValueAt(0, c).getClass();

            }

            public boolean isCellEditable(int row, int col) {

                return col != 5;

            }

            public void setValueAt(Object aValue, int row, int column) {

                data[row][column] = aValue;

            }

        };

        table.setModel(dataModel);

        TableRowSorter<TableModel> sorter = new TableRowSorter<TableModel>(

                dataModel);

        table.setRowSorter(sorter);

        JScrollPane scrollPane = new JScrollPane(table);

        newContentPane.add(scrollPane);

        frame.pack();

        frame.setLocation(0, 0);

        frame.setVisible(true);

    }

}