processor_selection.h

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/*
    Copyright (C) 2000-2007 Paul Davis

    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., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

#ifndef __ardour_gtk_processor_selection_h__
#define __ardour_gtk_processor_selection_h__

#include "pbd/xml++.h"

class ProcessorSelection {
  public:
    ProcessorSelection() : node (0) {}
    ~ProcessorSelection() { if (node) { delete node; } }

    void set (XMLNode* n) {
            if (node) {
                    delete node;
            }
            node = n;
    }

    void add (XMLNode* newchild) {
            if (!node) {
                    node = new XMLNode ("add");
            }
            node->add_child_nocopy (*newchild);
    }

    void clear () {
            if (node) {
                    delete node;
                    node = 0;
            }
    }

    bool empty () const { return node == 0 || node->children().empty(); }

    const XMLNode& get_node() const { return *node; }

  private:
    XMLNode* node;
};

#endif /* __ardour_gtk_processor_selection_h__ */