1 /*
   2  * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
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  23 
  24 /*
  25    @test
  26   @key headful
  27    @bug 7107099
  28    @summary JScrollBar does not show up even if there are enough lebgth of textstring in textField
  29    @author Pavel Porvatov
  30 */
  31 
  32 import sun.awt.SunToolkit;
  33 
  34 import javax.swing.*;
  35 import java.awt.*;
  36 
  37 public class bug7107099 {
  38     private static JFrame frame;
  39     private static JTextArea textarea;
  40     private static JScrollPane scrollPane;
  41 
  42     private static int value;
  43     private static int min;
  44     private static int max;
  45     private static int extent;
  46 
  47     public static void main(String[] args) throws Exception {
  48         SunToolkit toolkit = (SunToolkit) Toolkit.getDefaultToolkit();
  49 
  50         SwingUtilities.invokeAndWait(new Runnable() {
  51             @Override
  52             public void run() {
  53                 textarea = new JTextArea("before###1###\nbefore###2###\nbefore###3###\nbefore###4###\nbefore###5###\n");
  54 
  55                 scrollPane = new JScrollPane(textarea);
  56                 scrollPane.setPreferredSize(new Dimension(100, 50));
  57 
  58                 frame = new JFrame();
  59                 frame.setLayout(new BorderLayout());
  60                 frame.setSize(200, 200);
  61                 frame.add(scrollPane, BorderLayout.SOUTH);
  62                 frame.setVisible(true);
  63             }
  64         });
  65 
  66         toolkit.realSync();
  67 
  68         SwingUtilities.invokeAndWait(new Runnable() {
  69             @Override
  70             public void run() {
  71                 BoundedRangeModel model = scrollPane.getVerticalScrollBar().getModel();
  72 
  73                 value = model.getValue();
  74                 min = model.getMinimum();
  75                 max = model.getMaximum();
  76                 extent = model.getExtent();
  77 
  78                 // Do tricky manipulation for testing purpose
  79                 textarea.setText(null);
  80                 scrollPane.setViewportView(textarea);
  81                 textarea.setText("after###1###\nafter###1###\nafter###1###\nafter###1###\nafter###1###\n");
  82                 textarea.setCaretPosition(0);
  83             }
  84         });
  85 
  86         toolkit.realSync();
  87 
  88         SwingUtilities.invokeAndWait(new Runnable() {
  89             @Override
  90             public void run() {
  91                 BoundedRangeModel model = scrollPane.getVerticalScrollBar().getModel();
  92 
  93                 if (value != model.getValue() ||
  94                         min != model.getMinimum() ||
  95                         max != model.getMaximum() ||
  96                         extent != model.getExtent()) {
  97                     throw new RuntimeException("Test bug7107099 failed");
  98                 }
  99 
 100                 System.out.println("Test bug7107099 passed");
 101 
 102                 frame.dispose();
 103             }
 104         });
 105     }
 106 }