Add preference enum for plugin GUI unmap behavior

libs/ardour/ardour/types.h

@@ -677,6 +677,12 @@ struct CleanupReport {
 	size_t                   space;
 };
 
+enum PluginGUIBehavior {
+	PluginGUIHide,
+	PluginGUIDestroyAny,
+	PluginGUIDestroyVST,
+};
+
 /** A struct used to describe changes to processors in a route.
  *  This is useful because objects that respond to a change in processors
  *  can optimise what work they do based on details of what has changed.

libs/ardour/ardour/types_convert.h

@@ -79,6 +79,7 @@ DEFINE_ENUM_CONVERT(ARDOUR::RegionEquivalence)
 DEFINE_ENUM_CONVERT(ARDOUR::WaveformScale)
 DEFINE_ENUM_CONVERT(ARDOUR::WaveformShape)
 DEFINE_ENUM_CONVERT(ARDOUR::ScreenSaverMode)
+DEFINE_ENUM_CONVERT(ARDOUR::PluginGUIBehavior)
 DEFINE_ENUM_CONVERT(ARDOUR::VUMeterStandard)
 DEFINE_ENUM_CONVERT(ARDOUR::MeterLineUp)
 DEFINE_ENUM_CONVERT(ARDOUR::InputMeterLayout)

libs/ardour/enums.cc

@@ -143,6 +143,7 @@ setup_enum_writer ()
 	WaveformScale _WaveformScale;
 	WaveformShape _WaveformShape;
 	ScreenSaverMode _ScreenSaverMode;
+	PluginGUIBehavior _PluginGUIBehavior;
 	Session::PostTransportWork _Session_PostTransportWork;
 	MTC_Status _MIDI_MTC_Status;
 	BufferingPreset _BufferingPreset;
@@ -750,6 +751,11 @@ setup_enum_writer ()
 	REGISTER_ENUM(InhibitAlways);
 	REGISTER(_ScreenSaverMode);
 
+	REGISTER_ENUM(PluginGUIHide);
+	REGISTER_ENUM(PluginGUIDestroyAny);
+	REGISTER_ENUM(PluginGUIDestroyVST);
+	REGISTER(_PluginGUIBehavior);
+
 	REGISTER_ENUM (Small);
 	REGISTER_ENUM (Medium);
 	REGISTER_ENUM (Large);

libs/ardour/luabindings.cc

@@ -2549,6 +2549,12 @@ LuaBindings::common (lua_State* L)
 		.addConst ("InhibitAlways", ARDOUR::ScreenSaverMode(InhibitAlways))
 		.endNamespace ()
 
+		.beginNamespace ("PluginGUIBehavior")
+		.addConst ("PluginGUIHide", ARDOUR::PluginGUIBehavior(PluginGUIHide))
+		.addConst ("PluginGUIDestroyAny", ARDOUR::PluginGUIBehavior(PluginGUIDestroyAny))
+		.addConst ("PluginGUIDestroyVST", ARDOUR::PluginGUIBehavior(PluginGUIDestroyVST))
+		.endNamespace ()
+
 		.beginNamespace ("ClockDeltaMode")
 		.addConst ("NoDelta", ARDOUR::ClockDeltaMode(NoDelta))
 		.addConst ("DeltaEditPoint", ARDOUR::ClockDeltaMode(DeltaEditPoint))