1 /*
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   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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   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.
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   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
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  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
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  23 
  24 /* @test
  25    @bug 7107099
  26    @summary JScrollBar does not show up even if there are enough lebgth of textstring in textField
  27    @author Pavel Porvatov
  28 */
  29 
  30 import sun.awt.SunToolkit;
  31 
  32 import javax.swing.*;
  33 import java.awt.*;
  34 
  35 public class bug7107099 {
  36     private static JFrame frame;
  37     private static JTextArea textarea;
  38     private static JScrollPane scrollPane;
  39 
  40     private static int value;
  41     private static int min;
  42     private static int max;
  43     private static int extent;
  44 
  45     public static void main(String[] args) throws Exception {
  46         SunToolkit toolkit = (SunToolkit) Toolkit.getDefaultToolkit();
  47 
  48         SwingUtilities.invokeAndWait(new Runnable() {
  49             @Override
  50             public void run() {
  51                 textarea = new JTextArea("before###1###\nbefore###2###\nbefore###3###\nbefore###4###\nbefore###5###\n");
  52 
  53                 scrollPane = new JScrollPane(textarea);
  54                 scrollPane.setPreferredSize(new Dimension(100, 50));
  55 
  56                 frame = new JFrame();
  57                 frame.setLayout(new BorderLayout());
  58                 frame.setSize(200, 200);
  59                 frame.add(scrollPane, BorderLayout.SOUTH);
  60                 frame.setVisible(true);
  61             }
  62         });
  63 
  64         toolkit.realSync();
  65 
  66         SwingUtilities.invokeAndWait(new Runnable() {
  67             @Override
  68             public void run() {
  69                 BoundedRangeModel model = scrollPane.getVerticalScrollBar().getModel();
  70 
  71                 value = model.getValue();
  72                 min = model.getMinimum();
  73                 max = model.getMaximum();
  74                 extent = model.getExtent();
  75 
  76                 // Do tricky manipulation for testing purpose
  77                 textarea.setText(null);
  78                 scrollPane.setViewportView(textarea);
  79                 textarea.setText("after###1###\nafter###1###\nafter###1###\nafter###1###\nafter###1###\n");
  80                 textarea.setCaretPosition(0);
  81             }
  82         });
  83 
  84         toolkit.realSync();
  85 
  86         SwingUtilities.invokeAndWait(new Runnable() {
  87             @Override
  88             public void run() {
  89                 BoundedRangeModel model = scrollPane.getVerticalScrollBar().getModel();
  90 
  91                 if (value != model.getValue() ||
  92                         min != model.getMinimum() ||
  93                         max != model.getMaximum() ||
  94                         extent != model.getExtent()) {
  95                     throw new RuntimeException("Test bug7107099 failed");
  96                 }
  97 
  98                 System.out.println("Test bug7107099 passed");
  99 
 100                 frame.dispose();
 101             }
 102         });
 103     }
 104 }