Fix Tab key navigation on Mac in presence of static boxes

src/ShuttleGui.cpp

@@ -783,8 +783,6 @@ wxMenu * ShuttleGuiBase::AddMenu( const wxString & Title )
    return mpMenu;
 }
 
-
-
 /// Starts a static box around a number of controls.
 ///  @param Str   The text of the title for the box.
 ///  @param iProp The resizing proportion value.
@@ -795,7 +793,7 @@ wxStaticBox * ShuttleGuiBase::StartStatic(const wxString &Str, int iProp)
    UseUpId();
    if( mShuttleMode != eIsCreating )
       return NULL;
-   wxStaticBox * pBox = safenew wxStaticBox(GetParent(), miId,
+   wxStaticBox * pBox = safenew wxStaticBoxWrapper(GetParent(), miId,
       Str );
    pBox->SetLabel( Str );
    pBox->SetName(wxStripMenuCodes(Str));

src/ShuttleGui.h

@@ -78,6 +78,21 @@ class Shuttle;
 class WrappedType;
 
 #ifdef __WXMAC__
+
+#include <wx/statbox.h> // to inherit
+
+class wxStaticBoxWrapper
+   : public wxStaticBox // inherit to get access to m_container
+{
+public:
+   template< typename... Args >
+   wxStaticBoxWrapper( Args &&...args )
+      : wxStaticBox( std::forward<Args>(args)... )
+   {
+      m_container.EnableSelfFocus();
+   }
+};
+
 /// Fix a defect in TAB key navigation to sliders, known to happen in wxWidgets
 /// 3.1.1 and maybe in earlier versions
 class wxSliderWrapper : public wxSlider
@@ -87,6 +102,7 @@ public:
    void SetFocus() override;
 };
 #else
+using wxStaticBoxWrapper = wxStaticBox;
 using wxSliderWrapper = wxSlider;
 #endif
 

src/import/ImportPCM.cpp

@@ -52,6 +52,7 @@
 
 #include "../FileFormats.h"
 #include "../Prefs.h"
+#include "../ShuttleGui.h"
 #include "../WaveTrack.h"
 #include "ImportPlugin.h"
 
@@ -278,7 +279,7 @@ static wxString AskCopyOrEdit()
 
       vbox->Add(message, 1, wxALL | wxEXPAND, 10);
 
-      wxStaticBox *box = safenew wxStaticBox(&dialog, -1, _("Choose an import method"));
+      wxStaticBox *box = safenew wxStaticBoxWrapper(&dialog, -1, _("Choose an import method"));
       box->SetName(box->GetLabel());
 
       wxRadioButton *aliasRadio;