decoupled ui from effect row

project/effectfields/buttonfield.cpp

@@ -0,0 +1,18 @@
+#include "buttonfield.h"
+
+ButtonField::ButtonField(EffectRow *parent, const QString &string) :
+  EffectField(parent, nullptr, EFFECT_FIELD_UI)
+{
+  SetValueAt(0, string);
+}
+
+void ButtonField::SetCheckable(bool c)
+{
+  checkable_ = c;
+}
+
+void ButtonField::SetChecked(bool c)
+{
+  checked_ = c;
+  emit CheckedChanged(c);
+}