7184365: closed/java/awt/event/TextEvent/TextEventSequenceTest/TextEventSequenceTest fails

Reviewed-by: serb, bagiras

jdk/src/macosx/classes/sun/lwawt/LWTextAreaPeer.java

@@ -128,16 +128,6 @@ final class LWTextAreaPeer
         repaintPeer();
     }
 
-    @Override
-    public void setText(final String l) {
-        // Please note that we do not want to post an event
-        // if TextArea.setText() replaces an empty text by an empty text,
-        // that is, if component's text remains unchanged.
-        if (!l.isEmpty() || getTextComponent().getDocument().getLength() != 0) {
-            super.setText(l);
-        }
-    }
-
     @Override
     public void replaceRange(final String text, final int start,
                              final int end) {

jdk/src/macosx/classes/sun/lwawt/LWTextComponentPeer.java

@@ -124,7 +124,7 @@ abstract class LWTextComponentPeer<T extends TextComponent, D extends JComponent
     }
 
     @Override
-    public void setText(final String l) {
+    public final void setText(final String l) {
         synchronized (getDelegateLock()) {
             // JTextArea.setText() posts two different events (remove & insert).
             // Since we make no differences between text events,

jdk/src/share/classes/java/awt/TextComponent.java

@@ -235,9 +235,14 @@ public class TextComponent extends Component implements Accessible {
      * @see         java.awt.TextComponent#getText
      */
     public synchronized void setText(String t) {
+        boolean skipTextEvent = (text == null || text.isEmpty())
+                && (t == null || t.isEmpty());
         text = (t != null) ? t : "";
         TextComponentPeer peer = (TextComponentPeer)this.peer;
-        if (peer != null) {
+        // Please note that we do not want to post an event
+        // if TextArea.setText() or TextField.setText() replaces an empty text
+        // by an empty text, that is, if component's text remains unchanged.
+        if (peer != null && !skipTextEvent) {
             peer.setText(text);
         }
     }

jdk/src/solaris/classes/sun/awt/X11/XTextAreaPeer.java

@@ -463,13 +463,6 @@ class XTextAreaPeer extends XComponentPeer implements TextAreaPeer {
 
     protected boolean setTextImpl(String txt) {
         if (jtext != null) {
-            // Please note that we do not want to post an event
-            // if setText() replaces an empty text by an empty text,
-            // that is, if component's text remains unchanged.
-            if (jtext.getDocument().getLength() == 0 && txt.length() == 0) {
-                return true;
-            }
-
             // JTextArea.setText() posts two different events (remove & insert).
             // Since we make no differences between text events,
             // the document listener has to be disabled while

jdk/test/java/awt/event/TextEvent/TextEventSequenceTest/TextEventSequenceTest.java

@@ -0,0 +1,138 @@
+/*
+ * 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.
+ */
+
+/*
+ * @test
+ * @bug 4028580
+ * @summary TextArea does not send TextEvent when setText. Does for insert
+ * @author kdm@sparc.spb.su: area= awt.TextAvent
+ * @run main TextEventSequenceTest
+ */
+import java.awt.*;
+import java.awt.event.*;
+import sun.awt.SunToolkit;
+
+public class TextEventSequenceTest {
+
+    private static Frame f;
+    private static TextField tf;
+    private static TextArea t;
+    private static int cntEmptyStrings = 0;
+    private static int cntNonEmptyStrings = 0;
+
+    public static void main(String[] args) {
+
+        test("non-empty text string");
+        test("");
+        test(null);
+    }
+
+    private static void test(String test) {
+        SunToolkit toolkit = (SunToolkit) Toolkit.getDefaultToolkit();
+
+        createAndShowGUI(test);
+        toolkit.realSync();
+
+        initCounts();
+        t.setText("Hello ");
+        toolkit.realSync();
+        t.append("World! !");
+        toolkit.realSync();
+        t.insert("from Roger Pham", 13);
+        toolkit.realSync();
+        t.replaceRange("Java Duke", 18, 28);
+        toolkit.realSync();
+        checkCounts(0, 4);
+
+        initCounts();
+        t.setText("");
+        toolkit.realSync();
+        t.setText("");
+        toolkit.realSync();
+        t.setText("");
+        toolkit.realSync();
+        checkCounts(1, 0);
+
+        initCounts();
+        tf.setText("Hello There!");
+        toolkit.realSync();
+        checkCounts(0, 1);
+
+        initCounts();
+        tf.setText("");
+        toolkit.realSync();
+        tf.setText("");
+        toolkit.realSync();
+        tf.setText("");
+        toolkit.realSync();
+        checkCounts(1, 0);
+
+        f.dispose();
+    }
+
+    private static void createAndShowGUI(String text) {
+        f = new Frame("TextEventSequenceTest");
+        f.setLayout(new FlowLayout());
+
+        TextListener listener = new MyTextListener();
+
+        tf = new TextField(text);
+        tf.addTextListener(listener);
+        f.add(tf);
+
+        t = new TextArea(text, 10, 30);
+        t.addTextListener(listener);
+        f.add(t);
+
+        f.pack();
+        f.setVisible(true);
+    }
+
+    static class MyTextListener implements TextListener {
+
+        public synchronized void textValueChanged(TextEvent e) {
+            TextComponent tc = (TextComponent) e.getSource();
+            String text = tc.getText();
+            if (text.length() == 0) {
+                cntEmptyStrings++;
+            } else {
+                cntNonEmptyStrings++;
+            }
+        }
+    }
+
+    synchronized static void initCounts() {
+        cntEmptyStrings = 0;
+        cntNonEmptyStrings = 0;
+    }
+
+    synchronized static void checkCounts(int empty, int nonempty) {
+        if (empty != cntEmptyStrings || nonempty != cntNonEmptyStrings) {
+            throw new RuntimeException(
+                    String.format("Expected events: empty = %d, nonempty = %d, "
+                    + "actual events: empty = %d, nonempty = %d",
+                    empty, nonempty, cntEmptyStrings, cntNonEmptyStrings));
+        }
+    }
+}
+