X-Git-Url: https://bilbo.iut-bm.univ-fcomte.fr/and/gitweb/blast.git/blobdiff_plain/d30c9cf675ad7141d1c8e31d2e72315267d45cf2..5ce5a13d19945d096272447daa2e242c0a01b9f0:/ConnectionItem.cpp

diff --git a/ConnectionItem.cpp b/ConnectionItem.cpp
index b6d99a5..eaf46c2 100644
--- a/ConnectionItem.cpp
+++ b/ConnectionItem.cpp
@@ -727,13 +727,37 @@ void ConnectionItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
 }
 
 void ConnectionItem::contextMenuEvent(QGraphicsSceneContextMenuEvent * event) {
-  QMenu menu;
-  QAction* removeAction = menu.addAction("Remove");
-  QAction * selectedAction= menu.exec(event->screenPos());
+  /* have to check if the connection can be removed.
+     If the from or to InterfaceItem is owned by a group item, and this item
+     is both connected to and from, thus it is impossible to remove this connection
+   */
+  bool canRemove = true;
+  InterfaceItem* groupIfaceItem = NULL;
+  if (fromInterfaceItem->getOwner()->isGroupItem()) {
+    groupIfaceItem = fromInterfaceItem;
+  }
+  else if (toInterfaceItem->getOwner()->isGroupItem()) {
+    groupIfaceItem = toInterfaceItem;
+  }
+
+  if (groupIfaceItem != NULL) {
+    ConnectedInterface* ref = groupIfaceItem->refInter;
+    if ((ref->isConnectedFrom()) && (ref->isConnectedTo())) {
+      canRemove = false;
+    }
+  }
 
-  if(selectedAction == removeAction){
-    dispatcher->removeConnection(this);
-    dispatcher->removeUselessGroupInterfaces();
+  if (canRemove) {
+    QMenu menu;
+    QAction* titleAction = menu.addAction("Connection operations");
+    titleAction->setEnabled(false);
+    menu.addSeparator();
+    QAction* removeAction = menu.addAction("Remove");
+    QAction * selectedAction= menu.exec(event->screenPos());
+
+    if(selectedAction == removeAction){
+      dispatcher->removeConnection(this);
+    }
   }
 }