--- /dev/null
+package fr.orsay.lri.varna.interfaces;
+
+import java.awt.event.MouseEvent;
+import java.awt.geom.Point2D;
+import java.util.ArrayList;
+import java.util.Hashtable;
+import java.util.Set;
+
+import fr.orsay.lri.varna.models.rna.ModeleBP;
+import fr.orsay.lri.varna.models.rna.ModeleBase;
+
+public interface InterfaceVARNABasesListener {
+
+ /**
+ * Reacts to click over base
+ * @param mb The base which has just been clicked
+ */
+ public void onBaseClicked(ModeleBase mb, MouseEvent e);
+}