Spectral selection effects now prompt for missing frequency fields when used in time selection mode.

src/effects/Effect.cpp

@@ -107,6 +107,13 @@ bool Effect::DoEffect(wxWindow *parent, int flags,
 #ifdef EXPERIMENTAL_SPECTRAL_EDITING
    mF0 = selectedRegion->f0();
    mF1 = selectedRegion->f1();
+   wxArrayString Names;
+   if( mF0 != SelectedRegion::UndefinedFrequency )
+      Names.Add(wxT("control-f0"));
+   if( mF1 != SelectedRegion::UndefinedFrequency )
+      Names.Add(wxT("control-f1"));
+   SetPresetParameters( &Names, NULL );
+
 #endif
    CountWaveTracks();
 

src/effects/Effect.h

@@ -121,6 +121,11 @@ class AUDACITY_DLL_API Effect {
       return true;
    }
 
+   void SetPresetParameters( const wxArrayString * Names, const wxArrayString * Values ){
+      if( Names ) mPresetNames = *Names;
+      if( Values ) mPresetValues = *Values;
+   }
+
    void SetEffectFlags( int NewFlags )
    {
       mFlags = NewFlags;
@@ -221,6 +226,9 @@ class AUDACITY_DLL_API Effect {
    double         mF1;
 #endif
    TimeWarper     *mWarper;
+   wxArrayString  mPresetNames;
+   wxArrayString  mPresetValues;
+
 
  //
  // protected methods

src/effects/nyquist/Nyquist.cpp

@@ -334,7 +334,10 @@ void EffectNyquist::Parse(wxString line)
 
       ctrl.val = UNINITIALIZED_CONTROL;
 
-      mControls.Add(ctrl);
+      if( mPresetNames.Index( ctrl.var ) == wxNOT_FOUND )
+      {
+         mControls.Add(ctrl);
+      }
    }
 
    if (len >= 2 && tokens[0] == wxT("categories")) {
@@ -580,7 +583,12 @@ bool EffectNyquist::PromptUser()
    }
 
    if (!mExternal) {
-      if (mFileName.GetModificationTime().IsLaterThan(mFileModified)) {
+      //TODO: re-instate the caching of the lisp parsing so it is only done once.
+      //small efficiency gain.
+      //Disabled for now in order to allow number of controls to be varied easily
+      //depending on whether time or time-and-frequency were selected.
+      //if (mFileName.GetModificationTime().IsLaterThan(mFileModified)) 
+      {
          ParseFile();
          mFileModified = mFileName.GetModificationTime();
       }