8044614: [macosx] Focus issue with 2 applets in firefox

Reviewed-by: alexsch, pchelko

src/macosx/classes/sun/lwawt/macosx/CEmbeddedFrame.java

@@ -37,7 +37,8 @@ public class CEmbeddedFrame extends EmbeddedFrame {
 
     private CPlatformResponder responder;
     private static final Object classLock = new Object();
-    private static volatile CEmbeddedFrame focusedWindow;
+    private static volatile CEmbeddedFrame globalFocusedWindow;
+    private CEmbeddedFrame browserWindowFocusedApplet;
     private boolean parentWindowActive = true;
 
     public CEmbeddedFrame() {
@@ -110,10 +111,10 @@ public class CEmbeddedFrame extends EmbeddedFrame {
         synchronized (classLock) {
             // In some cases an applet may not receive the focus lost event
             // from the parent window (see 8012330)
-            focusedWindow = (focused) ? this
-                    : ((focusedWindow == this) ? null : focusedWindow);
+            globalFocusedWindow = (focused) ? this
+                    : ((globalFocusedWindow == this) ? null : globalFocusedWindow);
         }
-        if (focusedWindow == this) {
+        if (globalFocusedWindow == this) {
             // see bug 8010925
             // we can't put this to handleWindowFocusEvent because
             // it won't be invoced if focuse is moved to a html element
@@ -144,9 +145,23 @@ public class CEmbeddedFrame extends EmbeddedFrame {
     // non-focused applet. This method can be called from different threads.
     public void handleWindowFocusEvent(boolean parentWindowActive) {
         this.parentWindowActive = parentWindowActive;
+        // If several applets are running in different browser's windows, it is necessary to
+        // detect the switching between the parent windows and update globalFocusedWindow accordingly.
+        synchronized (classLock) {
+            if (!parentWindowActive) {
+                this.browserWindowFocusedApplet = globalFocusedWindow;
+            }
+            if (parentWindowActive && globalFocusedWindow != this && isParentWindowChanged()) {
+                // It looks like we have switched to another browser window, let's restore focus to
+                // the previously focused applet in this window. If no applets were focused in the
+                // window, we will set focus to the first applet in the window.
+                globalFocusedWindow = (this.browserWindowFocusedApplet != null) ? this.browserWindowFocusedApplet
+                        : this;
+            }
+        }
         // ignore focus "lost" native request as it may mistakenly
         // deactivate active window (see 8001161)
-        if (focusedWindow == this && parentWindowActive) {
+        if (globalFocusedWindow == this && parentWindowActive) {
             responder.handleWindowFocusEvent(parentWindowActive, null);
         }
     }
@@ -154,4 +169,10 @@ public class CEmbeddedFrame extends EmbeddedFrame {
     public boolean isParentWindowActive() {
         return parentWindowActive;
     }
+
+    private boolean isParentWindowChanged() {
+        // If globalFocusedWindow is located at inactive parent window or null, we have swithed to
+        // another window.
+        return globalFocusedWindow != null ? !globalFocusedWindow.isParentWindowActive() : true;
+    }
 }

test/java/awt/Focus/8044614/TestApplet.java

+/*
+ * Copyright (c) 2014, 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.
+ */
+
+import java.applet.Applet;
+import java.awt.TextField;
+
+public class TestApplet extends Applet {
+    TextField textField = null;
+
+    public void init() {
+        textField = new TextField(25);
+        add(textField);
+    }
+}

test/java/awt/Focus/8044614/applet1.html

+<!--
+ Copyright (c) 2014, 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.
+-->
+
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html lang="en">
+<head>
+  <meta http-equiv="content-type" content="text/html; charset=utf-8">
+  <title>First Applet</title>
+</head>
+  <body>
+    <applet 
+      code="TestApplet.class"
+      width="400" 
+      height="200"/>
+    </applet>
+  </body>
+</html>

test/java/awt/Focus/8044614/applet2.html

+<!--
+ Copyright (c) 2014, 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.
+-->
+
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html lang="en">
+<head>
+  <meta http-equiv="content-type" content="text/html; charset=utf-8">
+  <title>Second Applet</title>
+</head>
+  <body>
+    <applet 
+      code="TestApplet.class"
+      width="400" 
+      height="200"/>
+    </applet>
+  </body>
+</html>

test/java/awt/Focus/8044614/bug8044614.html

+<!--
+ Copyright (c) 2014, 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.
+-->
+
+<html>
+<head>
+<title>bug8044614</title>
+</head>
+<body>
+
+<h1>bug8044614</h1>
+
+<p> See the dialog box (usually in upper left corner) for instructions</p>
+
+<APPLET CODE="bug8044614.class" WIDTH=200 HEIGHT=200></APPLET>
+</body>
+</html>

test/java/awt/Focus/8044614/bug8044614.java

+/*
+ * Copyright (c) 2014, 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 8044614
+ * @summary Tests focus transfer between applets in different browser windows
+ * @author Dmitry Markov
+ * @library ../../regtesthelpers
+ * @build Sysout
+ * @run applet/manual=yesno bug8044614.html
+ */
+
+import javax.swing.JApplet;
+
+import test.java.awt.regtesthelpers.Sysout;
+
+public class bug8044614 extends JApplet {
+    public void init() {
+        String[] instructions = {
+            "(1) Go to the test directory test/java/awt/Focus/8044614",
+            "(2) Compile source file: javac TestApplet.java",
+            "(3) Open the \"main.html\" file in the browser",
+            "(4) Click the \"Start First Applet\" link to open the first applet window",
+            "(5) Wait for the applet to start (press \"Run\" to any security alerts that appears)",
+            "(6) Enter \"Hello\" to the text field",
+            "(7) Click the \"Start Second Applet)\" link to open the second applet window",
+            "(8) Wait for the applet to start (press \"Run\" to any security alerts that appears)",
+            "(9) Enter \"World\" to the text field",
+            "(10) Go back to the first applet and make sure you can enter some text to the text field"
+        };
+
+        Sysout.createDialogWithInstructions(instructions);
+    }
+}
+

test/java/awt/Focus/8044614/main.html

+<!--
+ Copyright (c) 2014, 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.
+-->
+
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html lang="en">
+<head>
+  <meta http-equiv="content-type" content="text/html; charset=utf-8">
+  <title>Applet Focus Bug main window</title>
+  <script language="JavaScript">
+    function openWindow(strURL, strWindowName, strWindowFeatures) {
+      var win = window.open(strURL, strWindowName, strWindowFeatures);
+    }
+  </script>
+
+</head>
+  <body>
+    <table>
+      <tr>
+        <td><a href="javascript:openWindow('applet1.html', '', 'toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes, width=400, height=400, top=0, left=0, hide=no')">Start First Applet</a></td>
+      </tr>
+      <tr>
+        <td><a href="javascript:openWindow('applet2.html', '', 'toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes, width=400, height=400, top=0, left=350, hide=no')">Start Second Applet</a></td>
+      </tr>
+    </table>
+  </body>
+</html>