added convenience undo command for removing a node and its exclusive deps

app/dialog/speedduration/speedduration.cpp

@@ -172,10 +172,7 @@ void SpeedDurationDialog::accept()
                 new TrackRippleRemoveBlockCommand(TrackOutput::TrackFromBlock(next_block), next_block, command);
 
                 // Delete node and its exclusive deps
-                QList<Node*> gap_and_its_deps;
-                gap_and_its_deps.append(next_block);
-                gap_and_its_deps.append(next_block->GetExclusiveDependencies());
-                new NodeRemoveCommand(static_cast<NodeGraph*>(next_block->parent()), gap_and_its_deps, command);
+                new NodeRemoveWithExclusiveDeps(static_cast<NodeGraph*>(next_block->parent()), next_block, command);
               } else {
                 // Otherwise we can just resize it
                 new BlockResizeCommand(next_block, next_block->out() - new_clip_length, command);

app/widget/nodeview/nodeviewundo.cpp

@@ -125,3 +125,12 @@ void NodeRemoveCommand::undo()
 
   edges_.clear();
 }
+
+NodeRemoveWithExclusiveDeps::NodeRemoveWithExclusiveDeps(NodeGraph *graph, Node *node, QUndoCommand *parent)
+{
+  QList<Node*> node_and_its_deps;
+  node_and_its_deps.append(node);
+  node_and_its_deps.append(node->GetExclusiveDependencies());
+
+  remove_command_ = new NodeRemoveCommand(graph, node_and_its_deps, this);
+}

app/widget/nodeview/nodeviewundo.h

@@ -78,4 +78,14 @@ private:
   QList<NodeEdgePtr> edges_;
 };
 
+class NodeRemoveWithExclusiveDeps : public QUndoCommand {
+public:
+  NodeRemoveWithExclusiveDeps(NodeGraph* graph,
+                              Node* node,
+                              QUndoCommand* parent = nullptr);
+
+private:
+  NodeRemoveCommand* remove_command_;
+};
+
 #endif // NODEVIEWUNDO_H

app/widget/timelinewidget/timelinewidget.cpp

@@ -445,12 +445,7 @@ void TimelineWidget::DeleteSelectedInternal(const QList<Block *> blocks, bool re
     }
 
     if (remove_from_graph) {
-      QList<Node*> block_and_its_exclusive_deps;
-
-      block_and_its_exclusive_deps.append(b);
-      block_and_its_exclusive_deps.append(b->GetExclusiveDependencies());
-
-      new NodeRemoveCommand(static_cast<NodeGraph*>(b->parent()), block_and_its_exclusive_deps, command);
+      new NodeRemoveWithExclusiveDeps(static_cast<NodeGraph*>(b->parent()), b, command);
     }
   }
 }

app/widget/timelinewidget/tool/ripple.cpp

@@ -72,7 +72,7 @@ void TimelineWidget::RippleTool::MouseReleaseInternal(TimelineViewMouseEvent *ev
         // Assumed the Block was a Gap and it was reduced to zero length, remove it here
         new TrackRippleRemoveBlockCommand(parent()->GetTrackFromReference(ghost->Track()), b, command);
 
-        new NodeRemoveCommand(static_cast<NodeGraph*>(b->parent()), {b}, command);
+        new NodeRemoveWithExclusiveDeps(static_cast<NodeGraph*>(b->parent()), b, command);
       }
     }
   }