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Index: queries/apichanges.xml
--- queries/apichanges.xml Base (BASE)
+++ queries/apichanges.xml Locally Modified (Based On LOCAL)
@@ -107,6 +107,25 @@
     <!-- ACTUAL CHANGES BEGIN HERE: -->
 
     <changes>
+        <change id="VQChangeEvent">
+        <api name="general"/>
+        <summary>VisibilityQueryChangeEvent added</summary>
+        <version major="1" minor="31"/>
+        <date day="7" month="11" year="2012"/>
+        <author login="mkleint"/>
+        <compatibility addition="yes" binary="compatible" semantic="compatible" source="compatible">
+        </compatibility>
+        <description>
+          <p>
+              Added new class <code>VisibilityQueryChangeEvent</code> which extends <code>ChangeEvent</code> and can be used by <code>VisibilityQueryImplementation</code> implementors
+              to fire a change event with additional information attached. <code>ChangeListener</code> implementions listening on <code>VisibilityQuery</code> can then check the
+              event's type when it arrives and use the additional information to their advantage.
+          </p>
+          
+        </description>
+        <class package="org.netbeans.spi.queries" name="VisibilityQueryChangeEvent"/>
+        <issue number="220749"/>
+      </change>
        <change id="SharabilityQueryBasedOnURI">
         <api name="general"/>
         <summary>SharabilityQuery and CollocationQuery extended to use URI</summary>
Index: queries/manifest.mf
--- queries/manifest.mf Base (BASE)
+++ queries/manifest.mf Locally Modified (Based On LOCAL)
@@ -1,5 +1,5 @@
 Manifest-Version: 1.0
 OpenIDE-Module: org.netbeans.modules.queries/1
-OpenIDE-Module-Specification-Version: 1.30
+OpenIDE-Module-Specification-Version: 1.31
 OpenIDE-Module-Localizing-Bundle: org/netbeans/modules/queries/Bundle.properties
 
Index: queries/src/org/netbeans/spi/queries/VisibilityQueryChangeEvent.java
--- queries/src/org/netbeans/spi/queries/VisibilityQueryChangeEvent.java Base (BASE)
+++ queries/src/org/netbeans/spi/queries/VisibilityQueryChangeEvent.java Locally New
@@ -0,0 +1,75 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2012 Oracle and/or its affiliates. All rights reserved.
+ *
+ * Oracle and Java are registered trademarks of Oracle and/or its affiliates.
+ * Other names may be trademarks of their respective owners.
+ *
+ * The contents of this file are subject to the terms of either the GNU
+ * General Public License Version 2 only ("GPL") or the Common
+ * Development and Distribution License("CDDL") (collectively, the
+ * "License"). You may not use this file except in compliance with the
+ * License. You can obtain a copy of the License at
+ * http://www.netbeans.org/cddl-gplv2.html
+ * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
+ * specific language governing permissions and limitations under the
+ * License.  When distributing the software, include this License Header
+ * Notice in each file and include the License file at
+ * nbbuild/licenses/CDDL-GPL-2-CP.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the GPL Version 2 section of the License file that
+ * accompanied this code. If applicable, add the following below the
+ * License Header, with the fields enclosed by brackets [] replaced by
+ * your own identifying information:
+ * "Portions Copyrighted [year] [name of copyright owner]"
+ *
+ * If you wish your version of this file to be governed by only the CDDL
+ * or only the GPL Version 2, indicate your decision by adding
+ * "[Contributor] elects to include this software in this distribution
+ * under the [CDDL or GPL Version 2] license." If you do not indicate a
+ * single choice of license, a recipient has the option to distribute
+ * your version of this file under either the CDDL, the GPL Version 2 or
+ * to extend the choice of license to its licensees as provided above.
+ * However, if you add GPL Version 2 code and therefore, elected the GPL
+ * Version 2 license, then the option applies only if the new code is
+ * made subject to such option by the copyright holder.
+ *
+ * Contributor(s):
+ *
+ * Portions Copyrighted 2012 Sun Microsystems, Inc.
+ */
+package org.netbeans.spi.queries;
+
+import javax.swing.event.ChangeEvent;
+import org.openide.filesystems.FileObject;
+
+/**
+ * ChangeEvent subclass to be used by VisibilityQueryImplementation implementations
+ * to fire changes when it's known what files changed visibility. Allows clients to use that information
+ * for improved performance when reacting on the event.
+ * @author mkleint
+ * @since 1.31
+ */
+public final class VisibilityQueryChangeEvent extends ChangeEvent {
+    private final FileObject[] fileObjects;
+
+
+    /**
+     * create new instance of the event, typically called by VisibilityQueryImplementation providers.
+     * @param source
+     * @param changedFileObjects 
+     */
+    public VisibilityQueryChangeEvent(Object source, FileObject[] changedFileObjects) {
+        super(source);
+        fileObjects = changedFileObjects;
+    }
+    
+    /**
+     * return the FileObjects that changed visibility
+     * @return 
+     */
+    public FileObject[] getFileObjects() {
+        return fileObjects;
+    }
+}