6986385: JLayer should implement accessible interface

Reviewed-by: rupashka

src/share/classes/javax/swing/JLayer.java

@@ -29,6 +29,7 @@ import sun.awt.AWTAccessor;
 
 import javax.swing.plaf.LayerUI;
 import javax.swing.border.Border;
+import javax.accessibility.*;
 import java.awt.*;
 import java.awt.event.*;
 import java.beans.PropertyChangeEvent;
@@ -149,7 +150,7 @@ import java.security.PrivilegedAction;
  */
 public final class JLayer<V extends Component>
         extends JComponent
-        implements Scrollable, PropertyChangeListener {
+        implements Scrollable, PropertyChangeListener, Accessible {
     private V view;
     // this field is necessary because JComponent.ui is transient
     // when layerUI is serializable
@@ -665,6 +666,22 @@ public final class JLayer<V extends Component>
         }
     }
 
+    /**
+     * Gets the AccessibleContext associated with this {@code JLayer}.
+     *
+     * @return the AccessibleContext associated with this {@code JLayer}.
+     */
+    public AccessibleContext getAccessibleContext() {
+        if (accessibleContext == null) {
+            accessibleContext = new AccessibleJComponent() {
+                public AccessibleRole getAccessibleRole() {
+                    return AccessibleRole.PANEL;
+                }
+            };
+        }
+        return accessibleContext;
+    }
+
     /**
      * static AWTEventListener to be shared with all AbstractLayerUIs
      */

test/javax/accessibility/6986385/bug6986385.java

+/*
+ * Copyright (c) 2010, 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 6986385
+   @summary JLayer should implement accessible interface
+   @author Alexander Potochkin
+   @run main bug6986385
+*/
+
+import javax.swing.*;
+import javax.accessibility.AccessibleContext;
+import javax.accessibility.AccessibleRole;
+
+public class bug6986385 {
+
+    public static void main(String... args) throws Exception {
+        JLayer l = new JLayer();
+        AccessibleContext acc = l.getAccessibleContext();
+        if (acc == null) {
+            throw new RuntimeException("JLayer's AccessibleContext is null");
+        }
+        if (acc.getAccessibleRole() != AccessibleRole.PANEL) {
+            throw new RuntimeException("JLayer's AccessibleRole must be PANEL");
+        }
+    }
+}