--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sysperfana/perfinvestigator/com.nokia.carbide.cpp.pi.core/src/com/nokia/carbide/cpp/pi/core/PIProjectNature.java	Thu Feb 11 15:32:31 2010 +0200
@@ -0,0 +1,89 @@
+/*
+ * 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.pi.core;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import org.eclipse.core.resources.IProject;
+import org.eclipse.core.resources.IProjectDescription;
+import org.eclipse.core.resources.IProjectNature;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IProgressMonitor;
+
+public class PIProjectNature implements IProjectNature {
+
+	public static final String PI_NATURE_ID = PICorePlugin.PLUGIN_ID + ".pinature";  //$NON-NLS-1$
+	
+	private IProject fProject;
+	
+	public void configure() throws CoreException {
+	}
+
+	public void deconfigure() throws CoreException {
+	}
+
+	public PIProjectNature() {
+	}
+	
+	public PIProjectNature(IProject project) {
+		setProject(project);
+	}
+
+	public IProject getProject() {
+		return fProject;
+	}
+
+	public void setProject(IProject project) {
+		fProject = project;
+	}
+
+	public static void addPINature(IProject project, IProgressMonitor mon) throws CoreException {
+		addNature(project, PI_NATURE_ID, mon);
+	}
+
+	public static void removePINature(IProject project, IProgressMonitor mon) throws CoreException {
+		removeNature(project, PI_NATURE_ID, mon);
+	}
+
+	private static void addNature(IProject project, String natureId, IProgressMonitor monitor) throws CoreException {
+		IProjectDescription description = project.getDescription();
+		String[] prevNatures = description.getNatureIds();
+		for (String prevNature : prevNatures) {
+			if (natureId.equals(prevNature)) {
+				return;
+			}
+		}
+		String[] newNatures = new String[prevNatures.length + 1];
+		System.arraycopy(prevNatures, 0, newNatures, 0, prevNatures.length);
+		newNatures[prevNatures.length] = natureId;
+		description.setNatureIds(newNatures);
+		project.setDescription(description, monitor);
+	}
+
+	private static void removeNature(IProject project, String natureId, IProgressMonitor monitor) throws CoreException {
+		IProjectDescription description = project.getDescription();
+		String[] prevNatures = description.getNatureIds();
+		List<String> newNatures = new ArrayList<String>(Arrays.asList(prevNatures));
+		newNatures.remove(natureId);
+		description.setNatureIds((String[]) newNatures.toArray(new String[newNatures.size()]));
+		project.setDescription(description, monitor);
+	}
+
+}