element_import_handler.h

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/*
 * Copyright (C) 2008 Sakari Bergen <sakari.bergen@beatwaves.net>
 * Copyright (C) 2013 Paul Davis <paul@linuxaudiosystems.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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
#ifndef __ardour_element_import_handler_h__
#define __ardour_element_import_handler_h__
 
#include <list>
#include <memory>
#include <set>
#include <string>
 
#include "ardour/libardour_visibility.h"
#include "pbd/libpbd_visibility.h"
 
class XMLTree;
 
namespace ARDOUR {
 
class Session;
class ElementImporter;
 
class LIBARDOUR_API ElementImportHandler
{
  public:
        typedef std::shared_ptr<ElementImporter> ElementPtr;
        typedef std::list<ElementPtr> ElementList;
 
        ElementImportHandler (XMLTree const & source, ARDOUR::Session & session)
                : source (source), session (session) { }
 
        virtual ~ElementImportHandler ();
 
        virtual std::string get_info () const = 0;
 
        ElementList elements;
 
        /* For checking duplicates names against queued elements */
 
        bool check_name (const std::string & name) const;
 
        void add_name (std::string name);
 
        void remove_name (const std::string & name);
 
        static bool dirty () { return _dirty; }
 
        static void set_dirty () { _dirty = true; }
 
        static bool errors () { return _errors; }
 
        static void set_errors () { _errors = true; }
 
  protected:
        XMLTree const &   source;
 
        ARDOUR::Session & session;
 
        static bool _dirty;
 
        static bool _errors;
 
  private:
        std::set<std::string> names;
};
 
} // namespace ARDOUR
 
#endif