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.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 4028580
  27  * @summary TextArea does not send TextEvent when setText. Does for insert
  28  * @author kdm@sparc.spb.su: area= awt.TextAvent
  29  * @run main TextEventSequenceTest
  30  */
  31 import java.awt.*;
  32 import java.awt.event.*;
  33 import sun.awt.SunToolkit;
  34 
  35 public class TextEventSequenceTest {
  36 
  37     private static Frame f;
  38     private static TextField tf;
  39     private static TextArea t;
  40     private static int cntEmptyStrings = 0;
  41     private static int cntNonEmptyStrings = 0;
  42 
  43     public static void main(String[] args) {
  44 
  45         test("non-empty text string");
  46         test("");
  47         test(null);
  48     }
  49 
  50     private static void test(String test) {
  51         SunToolkit toolkit = (SunToolkit) Toolkit.getDefaultToolkit();
  52 
  53         createAndShowGUI(test);
  54         toolkit.realSync();
  55 
  56         initCounts();
  57         t.setText("Hello ");
  58         toolkit.realSync();
  59         t.append("World! !");
  60         toolkit.realSync();
  61         t.insert("from Roger Pham", 13);
  62         toolkit.realSync();
  63         t.replaceRange("Java Duke", 18, 28);
  64         toolkit.realSync();
  65         checkCounts(0, 4);
  66 
  67         initCounts();
  68         t.setText("");
  69         toolkit.realSync();
  70         t.setText("");
  71         toolkit.realSync();
  72         t.setText("");
  73         toolkit.realSync();
  74         checkCounts(1, 0);
  75 
  76         initCounts();
  77         tf.setText("Hello There!");
  78         toolkit.realSync();
  79         checkCounts(0, 1);
  80 
  81         initCounts();
  82         tf.setText("");
  83         toolkit.realSync();
  84         tf.setText("");
  85         toolkit.realSync();
  86         tf.setText("");
  87         toolkit.realSync();
  88         checkCounts(1, 0);
  89 
  90         f.dispose();
  91     }
  92 
  93     private static void createAndShowGUI(String text) {
  94         f = new Frame("TextEventSequenceTest");
  95         f.setLayout(new FlowLayout());
  96 
  97         TextListener listener = new MyTextListener();
  98 
  99         tf = new TextField(text);
 100         tf.addTextListener(listener);
 101         f.add(tf);
 102 
 103         t = new TextArea(text, 10, 30);
 104         t.addTextListener(listener);
 105         f.add(t);
 106 
 107         f.pack();
 108         f.setVisible(true);
 109     }
 110 
 111     static class MyTextListener implements TextListener {
 112 
 113         public synchronized void textValueChanged(TextEvent e) {
 114             TextComponent tc = (TextComponent) e.getSource();
 115             String text = tc.getText();
 116             if (text.length() == 0) {
 117                 cntEmptyStrings++;
 118             } else {
 119                 cntNonEmptyStrings++;
 120             }
 121         }
 122     }
 123 
 124     synchronized static void initCounts() {
 125         cntEmptyStrings = 0;
 126         cntNonEmptyStrings = 0;
 127     }
 128 
 129     synchronized static void checkCounts(int empty, int nonempty) {
 130         if (empty != cntEmptyStrings || nonempty != cntNonEmptyStrings) {
 131             throw new RuntimeException(
 132                     String.format("Expected events: empty = %d, nonempty = %d, "
 133                     + "actual events: empty = %d, nonempty = %d",
 134                     empty, nonempty, cntEmptyStrings, cntNonEmptyStrings));
 135         }
 136     }
 137 }
 138