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diff --git a/eclipse/plugins/org.argeo.eclipse.ui/src/main/java/org/argeo/eclipse/ui/GenericTableComparator.java b/eclipse/plugins/org.argeo.eclipse.ui/src/main/java/org/argeo/eclipse/ui/GenericTableComparator.java
new file mode 100644
index 000000000..4c3ee69cc
--- /dev/null
+++ b/eclipse/plugins/org.argeo.eclipse.ui/src/main/java/org/argeo/eclipse/ui/GenericTableComparator.java
@@ -0,0 +1,39 @@
+package org.argeo.eclipse.ui;
+
+import org.eclipse.jface.viewers.Viewer;
+import org.eclipse.jface.viewers.ViewerComparator;
+
+public abstract class GenericTableComparator extends ViewerComparator {
+
+	protected int propertyIndex;
+	public static final int ASCENDING = 0, DESCENDING = 1;
+	protected int direction = DESCENDING;
+
+	/**
+	 * Creates an instance of a sorter for TableViewer.
+	 * 
+	 * @param defaultColumn
+	 *            the default sorter column
+	 */
+
+	public GenericTableComparator(int defaultColumnIndex, int direction) {
+		propertyIndex = defaultColumnIndex;
+		this.direction = direction;
+	}
+
+	public void setColumn(int column) {
+		if (column == this.propertyIndex) {
+			// Same column as last sort; toggle the direction
+			direction = 1 - direction;
+		} else {
+			// New column; do a descending sort
+			this.propertyIndex = column;
+			direction = DESCENDING;
+		}
+	}
+
+	/**
+	 * Must be Overriden in each view.
+	 */
+	public abstract int compare(Viewer viewer, Object e1, Object e2);
+}