decoupled effectfield UI from backend

project/effectfields/stringfield.cpp

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