implement context item in node view

app/node/CMakeLists.txt

@@ -34,6 +34,8 @@ set(OLIVE_SOURCES
   node/globals.h
   node/graph.cpp
   node/graph.h
+  node/group.cpp
+  node/group.h
   node/hashtraverser.cpp
   node/hashtraverser.h
   node/inputdragger.cpp

app/node/group.cpp

@@ -0,0 +1,30 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2021 Olive Team
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+***/
+
+#include "group.h"
+
+namespace olive {
+
+NodeGroup::NodeGroup()
+{
+
+}
+
+}

app/node/group.h

@@ -0,0 +1,43 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2021 Olive Team
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+***/
+
+#ifndef NODEGROUP_H
+#define NODEGROUP_H
+
+#include "node.h"
+
+namespace olive {
+
+class NodeGroup : public Node
+{
+  Q_OBJECT
+public:
+  NodeGroup();
+
+  void SetNodes(Node *nodes);
+
+private:
+  QVector<Node*> nodes_;
+
+};
+
+}
+
+#endif // NODEGROUP_H

app/node/output/track/track.h

@@ -168,17 +168,46 @@ public:
 
     QString ToString() const
     {
-      QString type_string;
-
-      if (type_ == Track::kVideo) {
-        type_string = QStringLiteral("v");
-      } else if (type_ == Track::kAudio) {
-        type_string = QStringLiteral("a");
-      } else {
+      QString type_string = TypeToString(type_);
+      if (type_string.isEmpty()) {
         return QString();
+      } else {
+        return QStringLiteral("%1:%2").arg(type_string, QString::number(index_));
+      }
+    }
+
+    /// For IDs that shouldn't change between localizations
+    static QString TypeToString(Type type)
+    {
+      switch (type) {
+      case kVideo:
+        return QStringLiteral("v");
+      case kAudio:
+        return QStringLiteral("a");
+      case kSubtitle:
+        return QStringLiteral("s");
+      case kCount:
+        break;
       }
 
-      return QStringLiteral("%1:%2").arg(type_string, QString::number(index_));
+      return QString();
+    }
+
+    /// For human-facing strings
+    static QString TypeToTranslatedString(Type type)
+    {
+      switch (type) {
+      case kVideo:
+        return tr("V");
+      case kAudio:
+        return tr("A");
+      case kSubtitle:
+        return tr("S");
+      case kCount:
+        break;
+      }
+
+      return QString();
     }
 
     static Type TypeFromString(const QString& s)