Decouple the array tool list box from the numbering enum

This prevents the dialog being sensitive to the exact ordering
of the enum, and instead defines an explicit mapping between
the axis numbering type, the label string and the position in the
list box control.

pcbnew/dialogs/dialog_create_array.cpp

@@ -21,14 +21,17 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
  */
 
-#include <pcb_edit_frame.h>
+#include "dialogs/dialog_create_array.h"
+
 #include <base_units.h>
-#include <boost/algorithm/string/join.hpp>
+
 #include <widgets/text_ctrl_eval.h>
+
 #include <class_board.h>
 #include <class_module.h>
+#include <pcb_edit_frame.h>
 
-#include "dialog_create_array.h"
+#include <boost/algorithm/string/join.hpp>
 
 /**
  * Struct containing the last-entered values for the dialog.
@@ -94,6 +97,37 @@ struct CREATE_ARRAY_DIALOG_ENTRIES
 // Persistent options settings
 static CREATE_ARRAY_DIALOG_ENTRIES saved_array_options;
 
+/**
+ * Local mapping for list-box <-> numbering type
+ */
+struct NUMBERING_LIST_DATA
+{
+    ARRAY_AXIS::NUMBERING_TYPE m_numbering_type;
+    wxString                   m_label;
+};
+
+/**
+ * List of type <--> name mappings (in order) for the numbering type
+ * list boxes
+ */
+static const std::vector<NUMBERING_LIST_DATA> numberingTypeData {
+    {
+        ARRAY_AXIS::NUMBERING_TYPE::NUMBERING_NUMERIC,
+        _( "Numerals (0,1,2,...,9,10)" ),
+    },
+    {
+        ARRAY_AXIS::NUMBERING_TYPE::NUMBERING_HEX,
+        _( "Hexadecimal (0,1,...,F,10,...)" ),
+    },
+    {
+        ARRAY_AXIS::NUMBERING_TYPE::NUMBERING_ALPHA_NO_IOSQXZ,
+        _( "Alphabet, minus IOSQXZ" ),
+    },
+    {
+        ARRAY_AXIS::NUMBERING_TYPE::NUMBERING_ALPHA_FULL,
+        _( "Alphabet, full 26 characters" ),
+    },
+};
 
 DIALOG_CREATE_ARRAY::DIALOG_CREATE_ARRAY(
         PCB_BASE_FRAME* aParent, bool enableNumbering, wxPoint aOrigPos )
@@ -111,19 +145,15 @@ DIALOG_CREATE_ARRAY::DIALOG_CREATE_ARRAY(
           m_originalItemPosition( aOrigPos ),
           m_numberingEnabled( enableNumbering )
 {
-    // Set up numbering scheme drop downs
-    //
-    // character set
-    // NOTE: do not change the order of this relative to the NUMBERING_TYPE enum
-    const wxString charSetDescriptions[] =
+    // Set up numbering scheme drop downs character set strings
+    for( const auto& numData : numberingTypeData )
     {
-        _( "Numerals (0,1,2,...,9,10)" ),
-        _( "Hexadecimal (0,1,...,F,10,...)" ),
-        _( "Alphabet, minus IOSQXZ" ),
-        _( "Alphabet, full 26 characters" )
-    };
-    m_choicePriAxisNumbering->Set( arrayDim( charSetDescriptions ), charSetDescriptions );
-    m_choiceSecAxisNumbering->Set( arrayDim( charSetDescriptions ), charSetDescriptions );
+        const wxString label = wxGetTranslation( numData.m_label );
+        void*          clientData = (void*) &numData;
+
+        m_choicePriAxisNumbering->Append( label, clientData );
+        m_choiceSecAxisNumbering->Append( label, clientData );
+    }
 
     m_choicePriAxisNumbering->SetSelection( 0 );
     m_choiceSecAxisNumbering->SetSelection( 0 );
@@ -208,26 +238,16 @@ void DIALOG_CREATE_ARRAY::OnParameterChanged( wxCommandEvent& event )
 static bool validateNumberingTypeAndOffset( const wxTextCtrl& offsetEntry,
         const wxChoice& typeEntry, ARRAY_AXIS& aAxis, wxArrayString& errors )
 {
-    const int typeVal = typeEntry.GetSelection();
-    // mind undefined casts to enums (should not be able to happen)
-    bool ok = typeVal <= ARRAY_AXIS::NUMBERING_TYPE_MAX;
+    const auto* typeData = static_cast<NUMBERING_LIST_DATA*>(
+            typeEntry.GetClientData( typeEntry.GetSelection() ) );
 
-    if( ok )
-    {
-        aAxis.SetAxisType( static_cast<ARRAY_AXIS::NUMBERING_TYPE>( typeVal ) );
-    }
-    else
-    {
-        wxString err;
-        err.Printf( _("Unrecognized numbering scheme: %d"), typeVal );
-        errors.Add( err );
-        // we can't proceed - we don't know the numbering type
-        return false;
-    }
+    wxCHECK_MSG( typeData, false, "Failed to get client data from list control." );
+
+    aAxis.SetAxisType( typeData->m_numbering_type );
 
     const wxString text = offsetEntry.GetValue();
 
-    ok = aAxis.SetOffset( text );
+    bool ok = aAxis.SetOffset( text );
 
     if( !ok )
     {

pcbnew/dialogs/dialog_create_array.h

@@ -41,8 +41,6 @@ class DIALOG_CREATE_ARRAY : public DIALOG_CREATE_ARRAY_BASE
 {
 public:
 
-    #define NUMBERING_TYPE_MAX NUMBERING_ALPHA_FULL
-
     // Constructor and destructor
     DIALOG_CREATE_ARRAY( PCB_BASE_FRAME* aParent, bool enableNumbering,
                          wxPoint aOrigPos );