processor_selection.h

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/*
 * Copyright (C) 2007-2009 David Robillard <d@drobilla.net>
 * Copyright (C) 2007-2017 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.
 */
 
#pragma once
 
#include <vector>
 
#include "pbd/signals.h"
#include "pbd/xml++.h"
 
class XMLProcessorSelection {
  public:
        XMLProcessorSelection() : node (0) {}
        ~XMLProcessorSelection() { 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;
};
 
class ProcessorSelection : public PBD::ScopedConnectionList, public sigc::trackable
{
  public:
        ProcessorSelection () {}
 
        XMLProcessorSelection processors;
        sigc::signal<void> ProcessorsChanged;
 
 
        void clear ();
        bool empty();
 
        void set (XMLNode* node);
        void add (XMLNode* node);
 
        void clear_processors ();
 
        private:
        ProcessorSelection& operator= (const ProcessorSelection& other);
        ProcessorSelection (ProcessorSelection const&);
};
 
bool operator==(const ProcessorSelection& a, const ProcessorSelection& b);