qgsrecentstylehandler.h

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/***************************************************************************
    qgsrecentstylehandler.h
    ------------------------
    begin                : September 2021
    copyright            : (C) 2021 by Nyall Dawson
    email                : nyall dot dawson at gmail dot com
 ***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
 
#ifndef QGSRECENTSTYLEHANDLER_H
#define QGSRECENTSTYLEHANDLER_H
 
#include <memory>
#include <unordered_map>
 
#include "qgis.h"
#include "qgis_core.h"
#include "qgis_sip.h"
#include "qgssymbol.h"
 
class QgsSymbol;

class CORE_EXPORT QgsRecentStyleHandler
{
  public:

    QgsRecentStyleHandler();
 
    QgsRecentStyleHandler( const QgsRecentStyleHandler &other ) = delete;
    QgsRecentStyleHandler &operator=( const QgsRecentStyleHandler &other ) = delete;
 
    ~QgsRecentStyleHandler();

    void pushRecentSymbol( const QString &identifier, QgsSymbol *symbol SIP_TRANSFER );

    QgsSymbol *recentSymbol( const QString &identifier ) const SIP_FACTORY;

    template <class SymbolType> std::unique_ptr< SymbolType > recentSymbol( const QString &identifier ) const SIP_SKIP
    {
      std::unique_ptr< QgsSymbol > tmpSymbol( recentSymbol( identifier ) );
      if ( SymbolType *symbolCastToType = dynamic_cast<SymbolType *>( tmpSymbol.get() ) )
      {
        return std::unique_ptr< SymbolType >( dynamic_cast<SymbolType *>( tmpSymbol.release() ) );
      }
      else
      {
        //could not cast
        return nullptr;
      }
    }
 
  private:
 
#ifdef SIP_RUN
    QgsRecentStyleHandler( const QgsRecentStyleHandler &other );
#endif
 
    std::unordered_map< QString, std::unique_ptr< QgsSymbol > > mRecentSymbols;
 
};
 
#endif // QGSRECENTSTYLEHANDLER_H