decoupled effectfield UI from backend

project/effectfields/filefield.cpp

@@ -0,0 +1,22 @@
+#include "filefield.h"
+
+FileField::FileField(EffectRow* parent, const QString &id) :
+  EffectField(parent, id, EFFECT_FIELD_FILE)
+{
+
+}
+
+QString FileField::GetFileAt(double timecode)
+{
+  return GetValueAt(timecode).toString();
+}
+
+QVariant FileField::ConvertStringToValue(const QString &s)
+{
+  return s;
+}
+
+QString FileField::ConvertValueToString(const QVariant &v)
+{
+  return v.toString();
+}