diff -r 55cd0ce718c6 apisupport.refactoring/nbproject/project.xml
--- a/apisupport.refactoring/nbproject/project.xml	Fri Mar 27 08:43:46 2009 +0100
+++ b/apisupport.refactoring/nbproject/project.xml	Wed Apr 01 17:49:34 2009 +0200
@@ -112,7 +112,7 @@
                     <compile-dependency/>
                     <run-dependency>
                         <release-version>1</release-version>
-                        <specification-version>1.22</specification-version>
+                        <specification-version>1.34</specification-version>
                     </run-dependency>
                 </dependency>
                 <dependency>
diff -r 55cd0ce718c6 apisupport.refactoring/src/org/netbeans/modules/apisupport/refactoring/RetoucheUtils.java
--- a/apisupport.refactoring/src/org/netbeans/modules/apisupport/refactoring/RetoucheUtils.java	Fri Mar 27 08:43:46 2009 +0100
+++ b/apisupport.refactoring/src/org/netbeans/modules/apisupport/refactoring/RetoucheUtils.java	Wed Apr 01 17:49:34 2009 +0200
@@ -201,13 +201,7 @@
     public static boolean isFileInOpenProject(FileObject file) {
         assert file != null;
         Project p = FileOwnerQuery.getOwner(file);
-        Project[] opened = OpenProjects.getDefault().getOpenProjects();
-        for (int i = 0; i<opened.length; i++) {
-            if (p.equals(opened[i]) || opened[i].equals(p)) {
-                return true;
-            }
-        }
-        return false;
+        return OpenProjects.getDefault().isProjectOpen(p);
     }
     
     public static boolean isOnSourceClasspath(FileObject fo) {
diff -r 55cd0ce718c6 cnd.refactoring/nbproject/project.xml
--- a/cnd.refactoring/nbproject/project.xml	Fri Mar 27 08:43:46 2009 +0100
+++ b/cnd.refactoring/nbproject/project.xml	Wed Apr 01 17:49:34 2009 +0200
@@ -172,7 +172,7 @@
                     <compile-dependency/>
                     <run-dependency>
                         <release-version>1</release-version>
-                        <specification-version>1.33</specification-version>
+                        <specification-version>1.34</specification-version>
                     </run-dependency>
                 </dependency>
                 <dependency>
diff -r 55cd0ce718c6 cnd.refactoring/src/org/netbeans/modules/cnd/refactoring/support/CsmRefactoringUtils.java
--- a/cnd.refactoring/src/org/netbeans/modules/cnd/refactoring/support/CsmRefactoringUtils.java	Fri Mar 27 08:43:46 2009 +0100
+++ b/cnd.refactoring/src/org/netbeans/modules/cnd/refactoring/support/CsmRefactoringUtils.java	Wed Apr 01 17:49:34 2009 +0200
@@ -89,13 +89,7 @@
             return false;
         }
         Project p = FileOwnerQuery.getOwner(f);
-        Project[] opened = OpenProjects.getDefault().getOpenProjects();
-        for (int i = 0; i < opened.length; i++) {
-            if (p.equals(opened[i]) || opened[i].equals(p)) {
-                return true;
-            }
-        }
-        return false;
+        return OpenProjects.getDefault().isProjectOpen(p);
     }
 
     public static boolean isRefactorable(FileObject fo) {
diff -r 55cd0ce718c6 groovy.refactoring/nbproject/project.xml
--- a/groovy.refactoring/nbproject/project.xml	Fri Mar 27 08:43:46 2009 +0100
+++ b/groovy.refactoring/nbproject/project.xml	Wed Apr 01 17:49:34 2009 +0200
@@ -20,6 +20,15 @@
                     <compile-dependency/>
                     <run-dependency>
                         <specification-version>0.7</specification-version>
+                    </run-dependency>
+                </dependency>
+                <dependency>
+                    <code-name-base>org.netbeans.modules.csl.api</code-name-base>
+                    <build-prerequisite/>
+                    <compile-dependency/>
+                    <run-dependency>
+                        <release-version>0-1</release-version>
+                        <specification-version>1.8</specification-version>
                     </run-dependency>
                 </dependency>
                 <dependency>
@@ -49,23 +58,6 @@
                     </run-dependency>
                 </dependency>
                 <dependency>
-                    <code-name-base>org.netbeans.modules.csl.api</code-name-base>
-                    <build-prerequisite/>
-                    <compile-dependency/>
-                    <run-dependency>
-                        <release-version>0-1</release-version>
-                        <specification-version>1.8</specification-version>
-                    </run-dependency>
-                </dependency>
-                <dependency>
-                    <code-name-base>org.netbeans.modules.parsing.api</code-name-base>
-                    <build-prerequisite/>
-                    <compile-dependency/>
-                    <run-dependency>
-                        <specification-version>1.0</specification-version>
-                    </run-dependency>
-                </dependency>
-                <dependency>
                     <code-name-base>org.netbeans.modules.java.project</code-name-base>
                     <build-prerequisite/>
                     <compile-dependency/>
@@ -92,6 +84,14 @@
                     </run-dependency>
                 </dependency>
                 <dependency>
+                    <code-name-base>org.netbeans.modules.parsing.api</code-name-base>
+                    <build-prerequisite/>
+                    <compile-dependency/>
+                    <run-dependency>
+                        <specification-version>1.0</specification-version>
+                    </run-dependency>
+                </dependency>
+                <dependency>
                     <code-name-base>org.netbeans.modules.projectapi</code-name-base>
                     <build-prerequisite/>
                     <compile-dependency/>
@@ -106,7 +106,7 @@
                     <compile-dependency/>
                     <run-dependency>
                         <release-version>1</release-version>
-                        <specification-version>1.31</specification-version>
+                        <specification-version>1.34</specification-version>
                     </run-dependency>
                 </dependency>
                 <dependency>
diff -r 55cd0ce718c6 groovy.refactoring/src/org/netbeans/modules/groovy/refactoring/RefactoringUtil.java
--- a/groovy.refactoring/src/org/netbeans/modules/groovy/refactoring/RefactoringUtil.java	Fri Mar 27 08:43:46 2009 +0100
+++ b/groovy.refactoring/src/org/netbeans/modules/groovy/refactoring/RefactoringUtil.java	Wed Apr 01 17:49:34 2009 +0200
@@ -142,17 +142,14 @@
     public static boolean isOnSourceClasspath(FileObject fo) {
         Project p = FileOwnerQuery.getOwner(fo);
         if (p==null) return false;
-        Project[] opened = OpenProjects.getDefault().getOpenProjects();
-        for (int i = 0; i<opened.length; i++) {
-            if (p.equals(opened[i]) || opened[i].equals(p)) {
-                SourceGroup[] gr = ProjectUtils.getSources(p).getSourceGroups(JavaProjectConstants.SOURCES_TYPE_JAVA);
-                for (int j = 0; j < gr.length; j++) {
-                    if (fo==gr[j].getRootFolder()) return true;
-                    if (FileUtil.isParentOf(gr[j].getRootFolder(), fo))
-                        return true;
-                }
-                return false;
+        if (OpenProjects.getDefault().isProjectOpen(p)) {
+            SourceGroup[] gr = ProjectUtils.getSources(p).getSourceGroups(JavaProjectConstants.SOURCES_TYPE_JAVA);
+            for (int j = 0; j < gr.length; j++) {
+                if (fo==gr[j].getRootFolder()) return true;
+                if (FileUtil.isParentOf(gr[j].getRootFolder(), fo))
+                    return true;
             }
+            return false;
         }
         return false;
     }
diff -r 55cd0ce718c6 ide.ergonomics/src/org/netbeans/modules/ide/ergonomics/fod/FeatureProjectFactory.java
--- a/ide.ergonomics/src/org/netbeans/modules/ide/ergonomics/fod/FeatureProjectFactory.java	Fri Mar 27 08:43:46 2009 +0100
+++ b/ide.ergonomics/src/org/netbeans/modules/ide/ergonomics/fod/FeatureProjectFactory.java	Wed Apr 01 17:49:34 2009 +0200
@@ -81,6 +81,7 @@
 import javax.xml.parsers.ParserConfigurationException;
 import org.netbeans.api.project.ui.OpenProjects;
 import org.openide.filesystems.FileUtil;
+import org.openide.util.Mutex;
 import org.xml.sax.SAXException;
 
 /**
@@ -353,8 +354,22 @@
             }
             if (s != null) {
                 try {
-                    s.notifyDeleted();
-                    Project p = ProjectManager.getDefault().findProject(getProjectDirectory());
+                    class FindProject implements Mutex.ExceptionAction<Project> {
+                        ProjectState s;
+                        
+                        public Project run() throws IOException {
+                            for (ProjectFactory pf : Lookup.getDefault().lookupAll(ProjectFactory.class)) {
+                                Project p = pf.loadProject(getProjectDirectory(), s);
+                                if (p != null) {
+                                    return p;
+                                }
+                            }
+                            return null;
+                        }
+                    }
+                    FindProject findProject = new FindProject();
+                    findProject.s = s;
+                    Project p = ProjectManager.mutex().readAccess(findProject);
                     if (p == FeatureNonProject.this) {
                         throw new IllegalStateException("New project shall be found! " + p); // NOI18N
                     }
diff -r 55cd0ce718c6 j2ee.jpa.refactoring/nbproject/project.xml
--- a/j2ee.jpa.refactoring/nbproject/project.xml	Fri Mar 27 08:43:46 2009 +0100
+++ b/j2ee.jpa.refactoring/nbproject/project.xml	Wed Apr 01 17:49:34 2009 +0200
@@ -107,7 +107,7 @@
                     <compile-dependency/>
                     <run-dependency>
                         <release-version>1</release-version>
-                        <specification-version>1.24</specification-version>
+                        <specification-version>1.34</specification-version>
                     </run-dependency>
                 </dependency>
                 <dependency>
diff -r 55cd0ce718c6 j2ee.jpa.refactoring/src/org/netbeans/modules/j2ee/jpa/refactoring/RefactoringUtil.java
--- a/j2ee.jpa.refactoring/src/org/netbeans/modules/j2ee/jpa/refactoring/RefactoringUtil.java	Fri Mar 27 08:43:46 2009 +0100
+++ b/j2ee.jpa.refactoring/src/org/netbeans/modules/j2ee/jpa/refactoring/RefactoringUtil.java	Wed Apr 01 17:49:34 2009 +0200
@@ -129,17 +129,14 @@
     public static boolean isOnSourceClasspath(FileObject fo) {
         Project p = FileOwnerQuery.getOwner(fo);
         if (p==null) return false;
-        Project[] opened = OpenProjects.getDefault().getOpenProjects();
-        for (int i = 0; i<opened.length; i++) {
-            if (p.equals(opened[i]) || opened[i].equals(p)) {
-                SourceGroup[] gr = ProjectUtils.getSources(p).getSourceGroups(JavaProjectConstants.SOURCES_TYPE_JAVA);
-                for (int j = 0; j < gr.length; j++) {
-                    if (fo==gr[j].getRootFolder()) return true;
-                    if (FileUtil.isParentOf(gr[j].getRootFolder(), fo))
-                        return true;
-                }
-                return false;
+        if (OpenProjects.getDefault().isProjectOpen(p)) {
+            SourceGroup[] gr = ProjectUtils.getSources(p).getSourceGroups(JavaProjectConstants.SOURCES_TYPE_JAVA);
+            for (int j = 0; j < gr.length; j++) {
+                if (fo==gr[j].getRootFolder()) return true;
+                if (FileUtil.isParentOf(gr[j].getRootFolder(), fo))
+                    return true;
             }
+            return false;
         }
         return false;
     }
diff -r 55cd0ce718c6 javascript.refactoring/src/org/netbeans/modules/refactoring/javascript/RetoucheUtils.java
--- a/javascript.refactoring/src/org/netbeans/modules/refactoring/javascript/RetoucheUtils.java	Fri Mar 27 08:43:46 2009 +0100
+++ b/javascript.refactoring/src/org/netbeans/modules/refactoring/javascript/RetoucheUtils.java	Wed Apr 01 17:49:34 2009 +0200
@@ -247,13 +247,7 @@
     public static boolean isFileInOpenProject(FileObject file) {
         assert file != null;
         Project p = FileOwnerQuery.getOwner(file);
-        Project[] opened = OpenProjects.getDefault().getOpenProjects();
-        for (int i = 0; i<opened.length; i++) {
-            if (p.equals(opened[i]) || opened[i].equals(p)) {
-                return true;
-            }
-        }
-        return false;
+        return OpenProjects.getDefault().isProjectOpen(p);
     }
     
     public static boolean isOnSourceClasspath(FileObject fo) {
diff -r 55cd0ce718c6 php.refactoring/nbproject/project.xml
--- a/php.refactoring/nbproject/project.xml	Fri Mar 27 08:43:46 2009 +0100
+++ b/php.refactoring/nbproject/project.xml	Wed Apr 01 17:49:34 2009 +0200
@@ -107,7 +107,7 @@
                     <compile-dependency/>
                     <run-dependency>
                         <release-version>1</release-version>
-                        <specification-version>1.30</specification-version>
+                        <specification-version>1.34</specification-version>
                     </run-dependency>
                 </dependency>
                 <dependency>
diff -r 55cd0ce718c6 php.refactoring/src/org/netbeans/modules/refactoring/php/findusages/RefactoringUtils.java
--- a/php.refactoring/src/org/netbeans/modules/refactoring/php/findusages/RefactoringUtils.java	Fri Mar 27 08:43:46 2009 +0100
+++ b/php.refactoring/src/org/netbeans/modules/refactoring/php/findusages/RefactoringUtils.java	Wed Apr 01 17:49:34 2009 +0200
@@ -227,13 +227,7 @@
     public static boolean isFileInOpenProject(FileObject file) {
         assert file != null;
         Project p = FileOwnerQuery.getOwner(file);
-        Project[] opened = OpenProjects.getDefault().getOpenProjects();
-        for (int i = 0; i < opened.length; i++) {
-            if (p.equals(opened[i]) || opened[i].equals(p)) {
-                return true;
-            }
-        }
-        return false;
+        return OpenProjects.getDefault().isProjectOpen(p);
     }
 
     public static boolean isOnSourceClasspath(FileObject fo) {
diff -r 55cd0ce718c6 projectui/test/unit/src/org/netbeans/modules/project/ui/OpenProjectListDuplicatesTest.java
--- a/projectui/test/unit/src/org/netbeans/modules/project/ui/OpenProjectListDuplicatesTest.java	Fri Mar 27 08:43:46 2009 +0100
+++ b/projectui/test/unit/src/org/netbeans/modules/project/ui/OpenProjectListDuplicatesTest.java	Wed Apr 01 17:49:34 2009 +0200
@@ -114,10 +114,16 @@
         }
 
         LOG.info("Before first open");
-        OpenProjects.getDefault().open(new Project[] { new Fake() }, false);
+        Fake f = new Fake();
+        assertFalse("null is not open", OpenProjects.getDefault().isProjectOpen(null));
+        OpenProjects.getDefault().open(new Project[] { f }, false);
+        assertTrue("Fake is open", OpenProjects.getDefault().isProjectOpen(f));
+        assertTrue("Fake is open, but real one is reported open too", OpenProjects.getDefault().isProjectOpen(p));
         LOG.info("After first and Before 2nd open");
         OpenProjects.getDefault().open(new Project[] { p }, false);
         LOG.info("After 2nd open");
+        assertTrue("Real one is open", OpenProjects.getDefault().isProjectOpen(p));
+        assertTrue("Fake is open too", OpenProjects.getDefault().isProjectOpen(f));
 
 
         List<Project> arr = Arrays.asList(OpenProjects.getDefault().openProjects().get());
@@ -129,6 +135,8 @@
         if (OpenProjects.getDefault().getOpenProjects().length != 0) {
             fail("All projects shall be closed: " + Arrays.asList(OpenProjects.getDefault().getOpenProjects()));
         }
+        assertFalse("No project is opened", OpenProjects.getDefault().isProjectOpen(p));
+        assertFalse("No project is opened", OpenProjects.getDefault().isProjectOpen(f));
 
         assertEquals("Close hook called", 1, TestProjectOpenedHookImpl.closed);
     }
diff -r 55cd0ce718c6 projectuiapi/apichanges.xml
--- a/projectuiapi/apichanges.xml	Fri Mar 27 08:43:46 2009 +0100
+++ b/projectuiapi/apichanges.xml	Wed Apr 01 17:49:34 2009 +0200
@@ -104,6 +104,23 @@
     <!-- ACTUAL CHANGES BEGIN HERE: -->
 
     <changes>
+        <change id="isProjectOpen">
+            <api name="general"/>
+            <summary>Utility method OpenProjects.isProjectOpen</summary>
+            <version major="1" minor="34"/>
+            <date day="7" month="4" year="2009"/>
+            <author login="jtulach"/>
+            <compatibility addition="yes" binary="compatible" deletion="no" deprecation="no" modification="no" semantic="compatible" source="compatible"/>
+            <description>
+                <p>
+                  It came to our attention that often users of <code>OpenProjects</code>
+                  want to find out if their project is opened or not. To simplify
+                  such code we offer a handy utility method.
+                </p>
+            </description>
+            <class package="org.netbeans.api.project.ui" name="OpenProjects"/>
+            <issue number="161120"/>
+        </change>
         <change id="nodefactory-ann">
             <api name="general"/>
             <summary>Add annotation @NodeFactory.Registration</summary>
diff -r 55cd0ce718c6 projectuiapi/nbproject/project.properties
--- a/projectuiapi/nbproject/project.properties	Fri Mar 27 08:43:46 2009 +0100
+++ b/projectuiapi/nbproject/project.properties	Wed Apr 01 17:49:34 2009 +0200
@@ -39,7 +39,7 @@
 
 javac.compilerargs=-Xlint -Xlint:-serial
 javac.source=1.5
-spec.version.base=1.33.0
+spec.version.base=1.34.0
 is.autoload=true
 javadoc.arch=${basedir}/arch.xml
 javadoc.apichanges=${basedir}/apichanges.xml
diff -r 55cd0ce718c6 projectuiapi/src/org/netbeans/api/project/ui/OpenProjects.java
--- a/projectuiapi/src/org/netbeans/api/project/ui/OpenProjects.java	Fri Mar 27 08:43:46 2009 +0100
+++ b/projectuiapi/src/org/netbeans/api/project/ui/OpenProjects.java	Wed Apr 01 17:49:34 2009 +0200
@@ -169,6 +169,23 @@
         trampoline.openAPI (projects,openSubprojects);
     }
 
+    /** Finds out if the project is opened.
+     * @param p the project to verify
+     * @return true if this project is among open ones, false otherwise
+     * @since 1.34
+     */
+    public boolean isProjectOpen(Project p) {
+        if (p == null) {
+            return false;
+        }
+        for (Project real : getOpenProjects()) {
+            if (p.equals(real) || real.equals(p)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
     /**
      * Closes given projects.
      * Acquires {@link org.netbeans.api.project.ProjectManager#mutex()} in the write mode.
diff -r 55cd0ce718c6 refactoring.java/nbproject/project.xml
--- a/refactoring.java/nbproject/project.xml	Fri Mar 27 08:43:46 2009 +0100
+++ b/refactoring.java/nbproject/project.xml	Wed Apr 01 17:49:34 2009 +0200
@@ -132,6 +132,7 @@
                     <compile-dependency/>
                     <run-dependency>
                         <release-version>1</release-version>
+                        <specification-version>1.34</specification-version>
                     </run-dependency>
                 </dependency>
                 <dependency>
diff -r 55cd0ce718c6 refactoring.java/src/org/netbeans/modules/refactoring/java/RetoucheUtils.java
--- a/refactoring.java/src/org/netbeans/modules/refactoring/java/RetoucheUtils.java	Fri Mar 27 08:43:46 2009 +0100
+++ b/refactoring.java/src/org/netbeans/modules/refactoring/java/RetoucheUtils.java	Wed Apr 01 17:49:34 2009 +0200
@@ -478,13 +478,7 @@
     }
 
     private static boolean isOpenProject(Project p) {
-        Project[] opened = OpenProjects.getDefault().getOpenProjects();
-        for (int i = 0; i < opened.length; i++) {
-            if (p.equals(opened[i]) || opened[i].equals(p)) {
-                return true;
-            }
-        }
-        return false;
+        return OpenProjects.getDefault().isProjectOpen(p);
     }
     
     private static Collection<TypeElement> typesToElements(Collection<? extends TypeMirror> types, CompilationInfo info) {
diff -r 55cd0ce718c6 ruby.refactoring/nbproject/project.xml
--- a/ruby.refactoring/nbproject/project.xml	Fri Mar 27 08:43:46 2009 +0100
+++ b/ruby.refactoring/nbproject/project.xml	Wed Apr 01 17:49:34 2009 +0200
@@ -91,7 +91,7 @@
                     <compile-dependency/>
                     <run-dependency>
                         <release-version>1</release-version>
-                        <specification-version>1.22</specification-version>
+                        <specification-version>1.34</specification-version>
                     </run-dependency>
                 </dependency>
                 <dependency>
diff -r 55cd0ce718c6 ruby.refactoring/src/org/netbeans/modules/refactoring/ruby/RetoucheUtils.java
--- a/ruby.refactoring/src/org/netbeans/modules/refactoring/ruby/RetoucheUtils.java	Fri Mar 27 08:43:46 2009 +0100
+++ b/ruby.refactoring/src/org/netbeans/modules/refactoring/ruby/RetoucheUtils.java	Wed Apr 01 17:49:34 2009 +0200
@@ -270,11 +270,8 @@
     public static boolean isFileInOpenProject(FileObject file) {
         assert file != null;
         Project p = FileOwnerQuery.getOwner(file);
-        Project[] opened = OpenProjects.getDefault().getOpenProjects();
-        for (int i = 0; i<opened.length; i++) {
-            if (p.equals(opened[i]) || opened[i].equals(p)) {
-                return true;
-            }
+        if (OpenProjects.getDefault().isProjectOpen(p)) {
+            return true;
         }
         return false;
     }
diff -r 55cd0ce718c6 web.refactoring/nbproject/project.xml
--- a/web.refactoring/nbproject/project.xml	Fri Mar 27 08:43:46 2009 +0100
+++ b/web.refactoring/nbproject/project.xml	Wed Apr 01 17:49:34 2009 +0200
@@ -107,7 +107,7 @@
                     <compile-dependency/>
                     <run-dependency>
                         <release-version>1</release-version>
-                        <specification-version>1.24</specification-version>
+                        <specification-version>1.34</specification-version>
                     </run-dependency>
                 </dependency>
                 <dependency>
@@ -134,6 +134,15 @@
                     <run-dependency>
                         <release-version>1</release-version>
                         <specification-version>1.16</specification-version>
+                    </run-dependency>
+                </dependency>
+                <dependency>
+                    <code-name-base>org.netbeans.modules.web.core</code-name-base>
+                    <build-prerequisite/>
+                    <compile-dependency/>
+                    <run-dependency>
+                        <release-version>2</release-version>
+                        <implementation-version/>
                     </run-dependency>
                 </dependency>
                 <dependency>
@@ -182,15 +191,6 @@
                     <compile-dependency/>
                     <run-dependency>
                         <specification-version>6.16</specification-version>
-                    </run-dependency>
-                </dependency>
-                <dependency>
-                    <code-name-base>org.netbeans.modules.web.core</code-name-base>
-                    <build-prerequisite/>
-                    <compile-dependency/>
-                    <run-dependency>
-                        <release-version>2</release-version>
-                        <implementation-version/>
                     </run-dependency>
                 </dependency>
             </module-dependencies>
diff -r 55cd0ce718c6 web.refactoring/src/org/netbeans/modules/web/refactoring/RefactoringUtil.java
--- a/web.refactoring/src/org/netbeans/modules/web/refactoring/RefactoringUtil.java	Fri Mar 27 08:43:46 2009 +0100
+++ b/web.refactoring/src/org/netbeans/modules/web/refactoring/RefactoringUtil.java	Wed Apr 01 17:49:34 2009 +0200
@@ -55,7 +55,6 @@
 import org.netbeans.modules.refactoring.api.AbstractRefactoring;
 import org.netbeans.modules.refactoring.api.Problem;
 import org.netbeans.modules.refactoring.api.RenameRefactoring;
-import org.netbeans.spi.java.classpath.ClassPathProvider;
 import org.openide.filesystems.FileObject;
 import org.openide.filesystems.FileUtil;
 import org.openide.util.Exceptions;
@@ -129,17 +128,14 @@
     public static boolean isOnSourceClasspath(FileObject fo) {
         Project p = FileOwnerQuery.getOwner(fo);
         if (p==null) return false;
-        Project[] opened = OpenProjects.getDefault().getOpenProjects();
-        for (int i = 0; i<opened.length; i++) {
-            if (p.equals(opened[i]) || opened[i].equals(p)) {
-                SourceGroup[] gr = ProjectUtils.getSources(p).getSourceGroups(JavaProjectConstants.SOURCES_TYPE_JAVA);
-                for (int j = 0; j < gr.length; j++) {
-                    if (fo==gr[j].getRootFolder()) return true;
-                    if (FileUtil.isParentOf(gr[j].getRootFolder(), fo))
-                        return true;
-                }
-                return false;
+        if (OpenProjects.getDefault().isProjectOpen(p)) {
+            SourceGroup[] gr = ProjectUtils.getSources(p).getSourceGroups(JavaProjectConstants.SOURCES_TYPE_JAVA);
+            for (int j = 0; j < gr.length; j++) {
+                if (fo==gr[j].getRootFolder()) return true;
+                if (FileUtil.isParentOf(gr[j].getRootFolder(), fo))
+                    return true;
             }
+            return false;
         }
         return false;
     }