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named_selection.cc

/*
    Copyright (C) 2003 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.

    $Id: named_selection.cc,v 1.2 2003/10/29 04:27:22 pbd Exp $
*/

#include <pbd/failed_constructor.h>
#include <pbd/error.h>

#include <ardour/session.h>
#include <ardour/utils.h>
#include <ardour/playlist.h>
#include <ardour/named_selection.h>

#include "i18n.h"

using namespace ARDOUR;

SigC::Signal1<void,NamedSelection*> NamedSelection::NamedSelectionCreated;

NamedSelection::NamedSelection (string n, list<Playlist*>& l) 
      : name (n)
{
      playlists = l;
      for (list<Playlist*>::iterator i = playlists.begin(); i != playlists.end(); ++i) {
            (*i)->ref();
      }
      NamedSelectionCreated (this);
}

NamedSelection::NamedSelection (Session& session, const XMLNode& node)
{
      XMLNode* lists_node;
      const XMLProperty* property;

      if ((property = node.property ("name")) == 0) {
            throw failed_constructor();
      }

      name = property->value();
      
      if ((lists_node = find_named_node (node, "Playlists")) == 0) {
            return;
      }

      XMLNodeList nlist = lists_node->children();
      XMLNodeConstIterator niter;

      for (niter = nlist.begin(); niter != nlist.end(); ++niter) {

            const XMLNode* plnode;
            string playlist_name;
            Playlist* playlist;

            plnode = *niter;

            if ((property = plnode->property ("name")) != 0) {
                  if ((playlist = session.playlist_by_name (property->value())) != 0) {
                        playlist->ref();
                        playlists.push_back (playlist);
                  } else {
                        warning << compose (_("Chunk %1 uses an unknown playlist \"%2\""), name, property->value()) << endmsg;
                  }
            } else {
                  error << compose (_("Chunk %1 contains misformed playlist information"), name) << endmsg;
                  throw failed_constructor();
            }
      }

      NamedSelectionCreated (this);
}

NamedSelection::~NamedSelection ()
{
      for (list<Playlist*>::iterator i = playlists.begin(); i != playlists.end(); ++i) {
            (*i)->unref();
      }
}

int
NamedSelection::set_state (const XMLNode& node)
{
      return 0;
}

XMLNode&
NamedSelection::get_state ()
{
      XMLNode* root = new XMLNode ("NamedSelection");
      XMLNode* child;

      root->add_property ("name", name);
      child = root->add_child ("Playlists");

      for (list<Playlist*>::iterator i = playlists.begin(); i != playlists.end(); ++i) {
            XMLNode* plnode = new XMLNode ("Playlist");

            plnode->add_property ("name", (*i)->name());
            child->add_child_nocopy (*plnode);
      }
      
      return *root;
}

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