--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sysperfana/perfinvestigator/com.nokia.carbide.cpp.pi.wizards/src/com/nokia/carbide/cpp/internal/pi/wizards/ui/util/PkgListTree.java	Thu Feb 11 15:32:31 2010 +0200
@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 
+ * All rights reserved.
+ * This component and the accompanying materials are made available
+ * under the terms of the License "Eclipse Public License v1.0"
+ * which accompanies this distribution, and is available
+ * at the URL "http://www.eclipse.org/legal/epl-v10.html".
+ *
+ * Initial Contributors:
+ * Nokia Corporation - initial contribution.
+ *
+ * Contributors:
+ *
+ * Description: 
+ *
+ */
+
+package com.nokia.carbide.cpp.internal.pi.wizards.ui.util;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+
+import org.eclipse.core.resources.IProject;
+import org.eclipse.core.resources.ResourcesPlugin;
+
+import com.nokia.carbide.cdt.builder.project.ICarbideBuildConfiguration;
+
+// keep the tree like a content provider because we have a branch of specialized node
+// of workspace tree , tree access using content provider give us an edge of constitent 
+// interface for walking the tree
+public class PkgListTree {
+	private ArrayList<Object> root = new ArrayList<Object>();
+	
+	public PkgListTree() {
+		setupWorkspaceRoot();
+	}
+
+	private void setupWorkspaceRoot() {
+		root.add(ResourcesPlugin.getWorkspace().getRoot());
+	}
+	
+	public Object[] getRoot() {
+		return root.toArray();
+	}
+	
+	public void removeAllPkgEntries() {
+		root.clear();
+		setupWorkspaceRoot();
+	}
+	
+	public void addPkgEntry (IPkgEntry entry) {
+		root.add(entry);
+	}
+	
+	public void removePkgEntry (IPkgEntry entry) {
+		root.remove(entry);
+	}
+	
+	public IPkgEntry[] getPkgEntries () {
+		ArrayList<IPkgEntry> pkgEntryArrayList = new ArrayList<IPkgEntry>();
+		Iterator<Object> rootItr = root.iterator();
+		while(rootItr.hasNext()) {
+			Object current = rootItr.next();
+			if (current instanceof IPkgEntry) {
+				pkgEntryArrayList.add((IPkgEntry) current);
+			}
+		}
+		return pkgEntryArrayList.toArray(new IPkgEntry[pkgEntryArrayList.size()]);
+	}
+
+	public void dispose() {
+		root.clear();
+	}
+	
+	public static boolean isBuildConfigurationItem(Object element) {
+		if (element instanceof ICarbideBuildConfiguration)
+			return true;
+		return false;
+	}
+
+	public static boolean isFileItem(Object element) {
+		if (element instanceof IPkgEntry)
+			return true;
+		return false;
+	}
+
+	public static boolean isProjectItem(Object element) {
+		if (element instanceof IProject)
+			return true;
+		return false;
+	}
+}