qgscolorschemeregistry.h

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/***************************************************************************
                             qgscolorschemeregistry.h
                             ------------------------
    begin                : July 2014
    copyright            : (C) 2014 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 QGSCOLORSCHEMEREGISTRY_H
#define QGSCOLORSCHEMEREGISTRY_H

#include "qgscolorscheme.h"
#include <QList>

class CORE_EXPORT QgsColorSchemeRegistry
{

  public:

    static QgsColorSchemeRegistry * instance();

    QgsColorSchemeRegistry();

    virtual ~QgsColorSchemeRegistry();

    void populateFromInstance();

    void addDefaultSchemes();

    void addUserSchemes();

    void addColorScheme( QgsColorScheme* scheme );

    bool removeColorScheme( QgsColorScheme* scheme );

    QList<QgsColorScheme *> schemes() const;

    QList<QgsColorScheme *> schemes( const QgsColorScheme::SchemeFlag flag ) const;

    template<class T> void schemes( QList<T*>& schemeList );

  private:

    static QgsColorSchemeRegistry *mInstance;

    QList< QgsColorScheme* > mColorSchemeList;

};

template<class T> void QgsColorSchemeRegistry::schemes( QList<T*>& schemeList )
{
  schemeList.clear();
  QList<QgsColorScheme *> schemeInstanceList = schemes();
  QList<QgsColorScheme *>::iterator schemeIt = schemeInstanceList.begin();
  for ( ; schemeIt != schemeInstanceList.end(); ++schemeIt )
  {
    T* scheme = dynamic_cast<T*>( *schemeIt );
    if ( scheme )
    {
      schemeList.push_back( scheme );
    }
  }
}

#endif