/*
  This file is part of LilyPond, the GNU music typesetter.

  Copyright (C) 2002--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>

  LilyPond 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 3 of the License, or
  (at your option) any later version.

  LilyPond 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 LilyPond.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "music-wrapper-iterator.hh"
#include "context.hh"
#include "music.hh"

class Context_specced_music_iterator : public Music_wrapper_iterator
{
public:
  DECLARE_SCHEME_CALLBACK (constructor, ());
  virtual void construct_children ();
};

void
Context_specced_music_iterator::construct_children ()
{
  SCM ct = get_music ()->get_property ("context-type");

  string c_id;
  SCM ci = get_music ()->get_property ("context-id");
  if (scm_is_string (ci))
    c_id = ly_scm2string (ci);
  SCM ops = get_music ()->get_property ("property-operations");

  Context *a = 0;

  if (to_boolean (get_music ()->get_property ("create-new")))
    a = get_outlet ()->create_unique_context (ct, c_id, ops);
  else
    a = get_outlet ()->find_create_context (ct, c_id, ops);

  if (a
      && to_boolean (get_music ()->get_property ("descend-only"))
      && !is_child_context (get_outlet (), a))
    a = 0;

  if (a)
    set_context (a);

  Music_wrapper_iterator::construct_children ();
}

IMPLEMENT_CTOR_CALLBACK (Context_specced_music_iterator);
