audacity/libraries/lib-strings/wxArrayStringEx.h

/**********************************************************************
 
 Audacity: A Digital Audio Editor
 
 @file wxArrayStringEx.h
 
 Paul Licameli split from MemoryX.h
 
 **********************************************************************/

#ifndef __AUDACITY_WX_ARRAY_STRING_EX__
#define __AUDACITY_WX_ARRAY_STRING_EX__

#include <wx/arrstr.h>

//! Extend wxArrayString with move operations and construction and insertion fromstd::initializer_list
class wxArrayStringEx : public wxArrayString
{
public:
   using wxArrayString::wxArrayString;
   wxArrayStringEx() = default;

   template< typename Iterator >
   wxArrayStringEx( Iterator start, Iterator finish )
   {
      this->reserve( std::distance( start, finish ) );
      while( start != finish )
         this->push_back( *start++ );
   }

   template< typename T >
   wxArrayStringEx( std::initializer_list< T > items )
   {
      this->reserve( this->size() + items.size() );
      for ( const auto &item : items )
         this->push_back( item );
   }

   //! The move operations can take arguments of the base class wxArrayString
   wxArrayStringEx( wxArrayString &&other )
   {
      swap( other );
   }

   //! The move operations can take arguments of the base class wxArrayString
   wxArrayStringEx &operator= ( wxArrayString &&other )
   {
      if ( this != &other ) {
         clear();
         swap( other );
      }
      return *this;
   }

   using wxArrayString::insert;

   template< typename T >
   iterator insert( const_iterator pos, std::initializer_list< T > items )
   {
      const auto index = pos - ((const wxArrayString*)this)->begin();
      this->wxArrayString::Insert( {}, index, items.size() );
      auto result = this->begin() + index, iter = result;
      for ( auto pItem = items.begin(), pEnd = items.end();
         pItem != pEnd;
         ++pItem, ++iter
      ) {
         *iter = *pItem;
      }
      return result;
   }
};

#endif