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  * @key headful
  27  * @bug 4028580
  28  * @summary TextArea does not send TextEvent when setText. Does for insert
  29  * @author kdm@sparc.spb.su: area= awt.TextAvent
  30  * @run main TextEventSequenceTest
  31  */
  32 import java.awt.*;
  33 import java.awt.event.*;
  34 import sun.awt.SunToolkit;
  35 
  36 public class TextEventSequenceTest {
  37 
  38     private static Frame f;
  39     private static TextField tf;
  40     private static TextArea t;
  41     private static int cntEmptyStrings = 0;
  42     private static int cntNonEmptyStrings = 0;
  43 
  44     public static void main(String[] args) {
  45 
  46         test("non-empty text string");
  47         test("");
  48         test(null);
  49     }
  50 
  51     private static void test(String test) {
  52         SunToolkit toolkit = (SunToolkit) Toolkit.getDefaultToolkit();
  53 
  54         createAndShowGUI(test);
  55         toolkit.realSync();
  56 
  57         initCounts();
  58         t.setText("Hello ");
  59         toolkit.realSync();
  60         t.append("World! !");
  61         toolkit.realSync();
  62         t.insert("from Roger Pham", 13);
  63         toolkit.realSync();
  64         t.replaceRange("Java Duke", 18, 28);
  65         toolkit.realSync();
  66         checkCounts(0, 4);
  67 
  68         initCounts();
  69         t.setText("");
  70         toolkit.realSync();
  71         t.setText("");
  72         toolkit.realSync();
  73         t.setText("");
  74         toolkit.realSync();
  75         checkCounts(1, 0);
  76 
  77         initCounts();
  78         tf.setText("Hello There!");
  79         toolkit.realSync();
  80         checkCounts(0, 1);
  81 
  82         initCounts();
  83         tf.setText("");
  84         toolkit.realSync();
  85         tf.setText("");
  86         toolkit.realSync();
  87         tf.setText("");
  88         toolkit.realSync();
  89         checkCounts(1, 0);
  90 
  91         f.dispose();
  92     }
  93 
  94     private static void createAndShowGUI(String text) {
  95         f = new Frame("TextEventSequenceTest");
  96         f.setLayout(new FlowLayout());
  97 
  98         TextListener listener = new MyTextListener();
  99 
 100         tf = new TextField(text);
 101         tf.addTextListener(listener);
 102         f.add(tf);
 103 
 104         t = new TextArea(text, 10, 30);
 105         t.addTextListener(listener);
 106         f.add(t);
 107 
 108         f.pack();
 109         f.setVisible(true);
 110     }
 111 
 112     static class MyTextListener implements TextListener {
 113 
 114         public synchronized void textValueChanged(TextEvent e) {
 115             TextComponent tc = (TextComponent) e.getSource();
 116             String text = tc.getText();
 117             if (text.length() == 0) {
 118                 cntEmptyStrings++;
 119             } else {
 120                 cntNonEmptyStrings++;
 121             }
 122         }
 123     }
 124 
 125     synchronized static void initCounts() {
 126         cntEmptyStrings = 0;
 127         cntNonEmptyStrings = 0;
 128     }
 129 
 130     synchronized static void checkCounts(int empty, int nonempty) {
 131         if (empty != cntEmptyStrings || nonempty != cntNonEmptyStrings) {
 132             throw new RuntimeException(
 133                     String.format("Expected events: empty = %d, nonempty = %d, "
 134                     + "actual events: empty = %d, nonempty = %d",
 135                     empty, nonempty, cntEmptyStrings, cntNonEmptyStrings));
 136         }
 137     }
 138 }
 139