Method contextMenuEvent

src/openms_gui/source/VISUAL/TOPPASScene.cpp:1695–1992

  }

  void TOPPASScene::contextMenuEvent(QGraphicsSceneContextMenuEvent* event)
  {
    QPointF scene_pos = event->scenePos();
    QGraphicsItem* clicked_item = itemAt(scene_pos, QTransform());
    QMenu menu;

    if (clicked_item == nullptr)
    {
      QAction* new_action = menu.addAction("Paste");
      emit requestClipboardContent();
      if (clipboard_ == nullptr)
      {
        new_action->setEnabled(false);
      }
    }
    else
    {
      if (!clicked_item->isSelected())
      {
        unselectAll();
      }

      clicked_item->setSelected(true);

      // check which kinds of items are selected and display a context menu containing only actions compatible with all of them
      bool found_tool = false;
      bool found_input = false;
      bool found_output = false;
      bool found_merger = false;
      bool found_splitter = false;
      bool found_edge = false;
      bool disable_resume = false;
      //bool disable_toppview = true;

      foreach(TOPPASEdge* edge, edges_)
      {
        if (edge->isSelected())
        {
          found_edge = true;
          break;
        }
      }

      foreach(TOPPASVertex* tv, vertices_)
      {
        if (!tv->isSelected())
        {
          continue;
        }

        if (qobject_cast<TOPPASToolVertex*>(tv))
        {
          found_tool = true;
          // all predecessor nodes finished successfully? if not, disable resuming
          for (ConstEdgeIterator it = tv->inEdgesBegin(); it != tv->inEdgesEnd(); ++it)
          {
            TOPPASToolVertex* pred_ttv = qobject_cast<TOPPASToolVertex*>((*it)->getSourceVertex());
            if (pred_ttv && (pred_ttv->getStatus() != TOPPASToolVertex::TOOL_SUCCESS))