Fix Automation listing

- Now correctly shows optional fields
- Now includes the zero-parameter commands.
- Fetches the Short-Names for menu commands.

src/Shuttle.cpp

@@ -559,11 +559,17 @@ void ShuttleSetAutomation::DefineEnum( int &var, const wxChar * key, const int v
 }
 
 bool ShuttleGetDefinition::IsOptional(){
-   bool result = pOptionalFlag ? true : false;
+   bool result = pOptionalFlag !=NULL;
    pOptionalFlag = NULL;
    return result;
 }
 
+// Definition distinguishes optional from not.
+ShuttleParams & ShuttleGetDefinition::Optional( bool & var ){ 
+   pOptionalFlag = &var;
+   return *this;
+};
+
 ShuttleGetDefinition::ShuttleGetDefinition( CommandMessageTarget & target ) : CommandMessageTargetDecorator( target )
 {
 }

src/Shuttle.h

@@ -136,6 +136,7 @@ public:
    ShuttleGetDefinition( CommandMessageTarget & target );
    wxString Result;
    bool IsOptional();
+   ShuttleParams & Optional( bool & var ) override;
    void Define( bool & var,     const wxChar * key, const bool vdefault, const bool vmin, const bool vmax, const bool vscl ) override;
    void Define( int & var,      const wxChar * key, const int vdefault, const int vmin, const int vmax, const int vscl ) override;
    void Define( size_t & var,   const wxChar * key, const int vdefault, const int vmin, const int vmax, const int vscl ) override;

src/commands/CommandManager.cpp

@@ -1665,6 +1665,15 @@ void CommandManager::GetAllCommandData(
       }
    }
 }
+
+wxString CommandManager::GetNameFromID(int id)
+{
+   CommandListEntry *entry = mCommandIDHash[id];
+   if (!entry)
+      return wxT("");
+   return entry->name;
+}
+
 wxString CommandManager::GetLabelFromName(const wxString &name)
 {
    CommandListEntry *entry = mCommandNameHash[name];

src/commands/CommandManager.h

@@ -262,6 +262,7 @@ class AUDACITY_DLL_API CommandManager final : public XMLTagHandler
 #endif
       bool includeMultis);
 
+   wxString GetNameFromID( int id );
    wxString GetLabelFromName(const wxString &name);
    wxString GetPrefixedLabelFromName(const wxString &name);
    wxString GetCategoryFromName(const wxString &name);

src/commands/CommandTargets.h

@@ -277,6 +277,9 @@ public:
 
 /// Used to aggregate the various output targets a command may have.
 /// Assumes responsibility for pointers passed into it.
+/// mProgressTarget is a unique pointer, but mStatusTraget and
+/// mErrorTarget are shared ones, because they may both point to the same 
+/// output 
 class CommandOutputTargets
 {
 public:
@@ -284,6 +287,9 @@ public:
    std::shared_ptr<CommandMessageTarget> mStatusTarget;
    std::shared_ptr<CommandMessageTarget> mErrorTarget;
 public:
+   // && is not a reference to a reference, but rather a way to allow reference to a temporary
+   // that will be gone or transfered after we have taken it.  It's a reference to an xvalue, 
+   // or 'expiring value'.
    CommandOutputTargets(std::unique_ptr<CommandProgressTarget> &&pt = TargetFactory::ProgressDefault(),
                        std::shared_ptr<CommandMessageTarget>  &&st = TargetFactory::MessageDefault(),
                        std::shared_ptr<CommandMessageTarget> &&et = TargetFactory::MessageDefault())

src/commands/GetInfoCommand.cpp

@@ -320,15 +320,19 @@ void GetInfoCommand::ExploreMenu( const CommandContext &context, wxMenu * pMenu,
    if( !pMenu )
       return;
 
+   CommandManager * pMan = context.GetProject()->GetCommandManager();
+
    wxMenuItemList list = pMenu->GetMenuItems();
    size_t lcnt = list.GetCount();
    wxMenuItem * item;
    wxString Label;
    wxString Accel;
+   wxString Name;
 
    for (size_t lndx = 0; lndx < lcnt; lndx++) {
       item = list.Item(lndx)->GetData();
       Label = item->GetItemLabelText();
+      Name = pMan->GetNameFromID( item->GetId() );
       Accel = item->GetItemLabel();
       if( Accel.Contains("\t") )
          Accel = Accel.AfterLast('\t');
@@ -342,12 +346,14 @@ void GetInfoCommand::ExploreMenu( const CommandContext &context, wxMenu * pMenu,
       if (item->IsCheck() && item->IsChecked())
          flags +=2;
 
-      context.StartArray();
-      context.AddItem( depth );
-      context.AddItem( flags );
-      context.AddItem( Label );
-      context.AddItem( Accel );
-      context.EndArray();
+      context.StartStruct();
+      context.AddItem( depth, "0" );
+      context.AddItem( flags, "1" );
+      context.AddItem( Label, "2" );
+      context.AddItem( Accel, "3" );
+      if( !Name.IsEmpty() )
+         context.AddItem( Name, "id" );// It is called Automation ID outside Audacity.
+      context.EndStruct();
 
       if (item->IsSubMenu()) {
          pMenu = item->GetSubMenu();

src/commands/SetClipCommand.cpp

@@ -63,7 +63,7 @@ bool SetClipCommand::DefineParams( ShuttleParams & S ){
    S.Optional( bHasColour      ).DefineEnum( mColour,      wxT("Color"),      kColour0, colours );
    // Allowing a negative start time is not a mistake.
    // It will be used in demonstrating time before zero.
-   S.Optional( bHasT0          ).Define(     mT0,          wxT("Start"),     -5.0, 0.0, 1000000.0);
+   S.Optional( bHasT0          ).Define(     mT0,          wxT("Start"),     0.0, -5.0, 1000000.0);
    return true;
 };