From cea79d5b73cc6904d777365f306ecd13cd988f9c Mon Sep 17 00:00:00 2001
From: Paul Licameli <paul.licameli@gmail.com>
Date: Tue, 5 Apr 2016 18:43:43 -0400
Subject: [PATCH] Bug1282: change of enabled state of Stereo To Mono should be
 persistent

---
 src/Menus.cpp         | 2 +-
 src/PluginManager.cpp | 9 +++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/Menus.cpp b/src/Menus.cpp
index 8acb837af..5f3ce1895 100644
--- a/src/Menus.cpp
+++ b/src/Menus.cpp
@@ -875,7 +875,7 @@ void AudacityProject::CreateMenusAndCommands()
          // plug-in manager, as if an effect.  Decide whether to show or hide it.
          const PluginID ID = EffectManager::Get().GetEffectByIdentifier(wxT("StereoToMono"));
          const PluginDescriptor *plug = PluginManager::Get().GetPlugin(ID);
-         if (plug)
+         if (plug && plug->IsEnabled())
             c->AddItem(wxT("Stereo to Mono"), _("Stereo Trac&k to Mono"), FN(OnStereoToMono),
             AudioIONotBusyFlag | StereoRequiredFlag | WaveTracksSelectedFlag,
             AudioIONotBusyFlag | StereoRequiredFlag | WaveTracksSelectedFlag);
diff --git a/src/PluginManager.cpp b/src/PluginManager.cpp
index 205801f69..f564e637c 100644
--- a/src/PluginManager.cpp
+++ b/src/PluginManager.cpp
@@ -1345,6 +1345,7 @@ void PluginDescriptor::SetImporterExtensions(const wxArrayString & extensions)
 #define KEY_EFFECTTYPE_ANALYZE         wxT("Analyze")
 #define KEY_EFFECTTYPE_GENERATE        wxT("Generate")
 #define KEY_EFFECTTYPE_PROCESS         wxT("Process")
+#define KEY_EFFECTTYPE_HIDDEN          wxT("Hidden")
 #define KEY_IMPORTERIDENT              wxT("ImporterIdent")
 #define KEY_IMPORTERFILTER             wxT("ImporterFilter")
 #define KEY_IMPORTEREXTENSIONS         wxT("ImporterExtensions")
@@ -1909,6 +1910,10 @@ void PluginManager::LoadGroup(PluginType type)
             {
                plug.SetEffectType(EffectTypeProcess);
             }
+            else if (strVal.IsSameAs(KEY_EFFECTTYPE_HIDDEN))
+            {
+               plug.SetEffectType(EffectTypeHidden);
+            }
             else
             {
                continue;
@@ -2087,6 +2092,10 @@ void PluginManager::SaveGroup(PluginType type)
             {
                stype = KEY_EFFECTTYPE_PROCESS;
             }
+            else if (etype == EffectTypeHidden)
+            {
+               stype = KEY_EFFECTTYPE_HIDDEN;
+            }
             mRegistry->Write(KEY_EFFECTTYPE, stype);
             mRegistry->Write(KEY_EFFECTFAMILY, plug.GetEffectFamily(false));
             mRegistry->Write(KEY_EFFECTDEFAULT, plug.IsEffectDefault());