nodes/clips: use node label as clip name and allow changing multiple labels at once

Merges the "clip name" and "node label" into the same entity.

app/widget/nodeview/nodeview.cpp

@@ -490,15 +490,13 @@ void NodeView::ShowContextMenu(const QPoint &pos)
 
   if (itemAt(pos) && !selected.isEmpty()) {
 
-    if (selected.size() == 1) {
+    // Label node action
+    QAction* label_action = m.addAction(tr("Label"));
+    connect(label_action, &QAction::triggered, this, [this](){
+      Core::instance()->LabelNodes(scene_.GetSelectedNodes());
+    });
 
-      // Label node action
-      QAction* label_action = m.addAction(tr("Label"));
-      connect(label_action, &QAction::triggered, this, &NodeView::ContextMenuLabelNode);
-
-      m.addSeparator();
-
-    }
+    m.addSeparator();
 
     // Auto-position action
     QAction* autopos = m.addAction(tr("Auto-Position"));
@@ -591,30 +589,6 @@ void NodeView::AutoPositionDescendents()
   }
 }
 
-void NodeView::ContextMenuLabelNode()
-{
-  QList<Node*> nodes = scene_.GetSelectedNodes();
-
-  if (nodes.isEmpty()) {
-    return;
-  }
-
-  Node* n = nodes.first();
-
-  bool ok;
-
-  QString s = QInputDialog::getText(this,
-                                    tr("Label Node"),
-                                    tr("Set node label"),
-                                    QLineEdit::Normal,
-                                    n->GetLabel(),
-                                    &ok);
-
-  if (ok) {
-    n->SetLabel(s);
-  }
-}
-
 void NodeView::ContextMenuFilterChanged(QAction *action)
 {
   FilterMode filter = static_cast<FilterMode>(action->data().toInt());

app/widget/nodeview/nodeview.h

@@ -175,11 +175,6 @@ private slots:
    */
   void AutoPositionDescendents();
 
-  /**
-   * @brief Receiver for labelling a node from the context menu
-   */
-  void ContextMenuLabelNode();
-
   /**
    * @brief Receiver for the user changing the filter
    */

app/widget/nodeview/nodeviewscene.cpp

@@ -291,10 +291,12 @@ bool NodeViewScene::GetEdgesAreCurved() const
 
 void NodeViewScene::SetEdgesAreCurved(bool curved)
 {
-  curved_edges_ = curved;
+  if (curved_edges_ != curved) {
+    curved_edges_ = curved;
 
-  foreach (NodeViewEdge* e, edge_map_) {
-    e->SetCurved(curved_edges_);
+    foreach (NodeViewEdge* e, edge_map_) {
+      e->SetCurved(curved_edges_);
+    }
   }
 }