--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sysperfana/perfinvestigator/com.nokia.carbide.cpp.pi.peccommon/src/com/nokia/carbide/cpp/pi/peccommon/PecCommonLegendViewerSorter.java	Wed Apr 21 15:14:16 2010 +0300
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2010 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.peccommon;
+
+import org.eclipse.jface.viewers.Viewer;
+import org.eclipse.jface.viewers.ViewerComparator;
+
+/**
+ * Sorter for the IPC legend
+ */
+public class PecCommonLegendViewerSorter extends ViewerComparator {
+	protected int columnIdx;
+	protected boolean sortUp;
+	
+	/**
+	 * Constructor
+	 */
+	public PecCommonLegendViewerSorter() {
+		super();
+		sortUp = false;
+		columnIdx = -1;
+	}
+	
+	/**
+	 * Sets the column to be sorted for subsequent sorts. This will also 
+	 * reverse sort order. 
+	 * @param columnIdx the column to sort on next
+	 */
+	public void setSortColumn(int columnIdx){
+		if (this.columnIdx == columnIdx){
+			sortUp = !sortUp;//change sort order	
+		} else {
+			this.columnIdx = columnIdx;
+			sortUp = true; //default sort order		
+		}
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.jface.viewers.ViewerComparator#compare(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
+	 */
+	@Override
+	public int compare(Viewer viewer, Object e1, Object e2) {
+		PecCommonLegendElement le1 = (PecCommonLegendElement)e1;
+		PecCommonLegendElement le2 = (PecCommonLegendElement)e2;
+		int ret = 0;
+
+		switch (columnIdx) {
+		case PecCommonLegend.COLUMN_SHORT_TITLE:
+			ret = le1.getCharacter() - le2.getCharacter();
+			break;
+		case PecCommonLegend.COLUMN_NAME:
+			ret = le1.getName().compareTo(le2.getName()); 
+			break;
+		case PecCommonLegend.COLUMN_AVERAGE:
+			float a1 = le1.getSum() / (le1.getCnt() > 0 ? le1.getCnt() : 1); 
+			float a2 = le2.getSum() / (le2.getCnt() > 0 ? le2.getCnt() : 1); 
+			ret = Float.compare(a1, a2);
+			break;
+		case PecCommonLegend.COLUMN_SUM:
+			ret = (int)(le1.getSum() - le2.getSum());
+			break;
+		case PecCommonLegend.COLUMN_MIN:
+			ret = le1.getMin() - le2.getMin(); 
+			break;
+		case PecCommonLegend.COLUMN_MAX:
+			ret = le1.getMax() - le2.getMax(); 
+			break;
+		default:
+			throw new IllegalStateException("Unknown column index in legend"); //$NON-NLS-1$
+		}
+		
+		return sortUp? ret : (ret * -1);
+		
+	}
+
+}