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playlist_selector.cc

/*
    Copyright (C) 2004 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.


*/

#include <gtkmm/button.h>

#include <ardour/session_playlist.h>
#include <ardour/audio_diskstream.h>
#include <ardour/playlist.h>
#include <ardour/audio_track.h>
#include <ardour/audioplaylist.h>
#include <ardour/configuration.h>

#include <gtkmm2ext/gtk_ui.h>
#include <gtkmm2ext/window_title.h>

#include "playlist_selector.h"
#include "route_ui.h"
#include "gui_thread.h"

#include "i18n.h"

using namespace std;
using namespace sigc;
using namespace Gtk;
using namespace Gtkmm2ext;
using namespace ARDOUR;
using namespace PBD;

PlaylistSelector::PlaylistSelector ()
      : ArdourDialog ("playlist selector")
{
      rui = 0;
      
      set_position (WIN_POS_MOUSE);
      set_name ("PlaylistSelectorWindow");
      set_modal(true);
      add_events (Gdk::KEY_PRESS_MASK|Gdk::KEY_RELEASE_MASK);
      set_size_request (300, 200);

      WindowTitle title(Glib::get_application_name());
      title += _("Playlists");
      set_title(title.get_string());

      model = TreeStore::create (columns);
      tree.set_model (model);
      tree.append_column (_("Playlists grouped by track"), columns.text);

      scroller.add (tree);
      scroller.set_policy (POLICY_AUTOMATIC, POLICY_AUTOMATIC);

      get_vbox()->set_border_width (6);
      get_vbox()->set_spacing (12);

      get_vbox()->pack_start (scroller);

      Button* b = add_button (_("close"), RESPONSE_CANCEL);
      b->signal_clicked().connect (mem_fun(*this, &PlaylistSelector::close_button_click));

}

PlaylistSelector::~PlaylistSelector ()
{
      clear_map ();
}

void
PlaylistSelector::clear_map ()
{
      for (DSPL_Map::iterator x = dspl_map.begin(); x != dspl_map.end(); ++x) {
            delete x->second;
      }
      dspl_map.clear ();
}

bool
PlaylistSelector::on_unmap_event (GdkEventAny* ev)
{
      clear_map ();
      if (model) {
            model->clear ();
      }
      return Dialog::on_unmap_event (ev);
}

void
PlaylistSelector::show_for (RouteUI* ruix)
{
      vector<const char*> item;
      boost::shared_ptr<Diskstream> this_ds;
      string str;

      rui = ruix;

      WindowTitle title(Glib::get_application_name());
      title += string_compose (_("Playlist for %1"), rui->route()->name());
      set_title (title.get_string());

      clear_map ();
      select_connection.disconnect ();

      model->clear ();
      
      session->foreach_playlist (this, &PlaylistSelector::add_playlist_to_map);

      this_ds = rui->get_diskstream();

      TreeModel::Row others = *(model->append ());

      others[columns.text] = _("Other tracks");
      boost::shared_ptr<Playlist> proxy = others[columns.playlist];
      proxy.reset ();
      
      for (DSPL_Map::iterator x = dspl_map.begin(); x != dspl_map.end(); ++x) {

            boost::shared_ptr<Diskstream> ds = session->diskstream_by_id (x->first);

            if (ds == 0) {
                  continue;
            }

            /* add a node for the diskstream */

            string nodename;

            if (ds->name().empty()) {
                  nodename = _("unassigned");
            } else {
                  nodename = ds->name().c_str();
            }
            
            TreeModel::Row row;
            TreeModel::Row* selected_row = 0;
            TreePath this_path;

            if (ds == this_ds) {
                  row = *(model->prepend());
                  row[columns.text] = nodename;
                  boost::shared_ptr<Playlist> proxy = row[columns.playlist];
                  proxy.reset ();
            } else {
                  row = *(model->append (others.children()));
                  row[columns.text] = nodename;
                  boost::shared_ptr<Playlist> proxy = row[columns.playlist];
                  proxy.reset ();
            }

            /* Now insert all the playlists for this diskstream/track in a subtree */
            
            list<boost::shared_ptr<Playlist> > *pls = x->second;
            
            for (list<boost::shared_ptr<Playlist> >::iterator p = pls->begin(); p != pls->end(); ++p) {

                  TreeModel::Row child_row;

                  child_row = *(model->append (row.children()));
                  child_row[columns.text] = (*p)->name();
                  child_row[columns.playlist] = *p;

                  if (*p == this_ds->playlist()) {
                        selected_row = &child_row;
                  } 
            }
            
            if (selected_row != 0) {
                  tree.get_selection()->select (*selected_row);
            }
      }

      show_all ();
      select_connection = tree.get_selection()->signal_changed().connect (mem_fun(*this, &PlaylistSelector::selection_changed));
}

void
PlaylistSelector::add_playlist_to_map (boost::shared_ptr<Playlist> pl)
{
      boost::shared_ptr<AudioPlaylist> apl;

      if (pl->frozen()) {
            return;
      }
      
      if ((apl = boost::dynamic_pointer_cast<AudioPlaylist> (pl)) == 0) {
            return;
      }

      DSPL_Map::iterator x;

      if ((x = dspl_map.find (apl->get_orig_diskstream_id())) == dspl_map.end()) {

            pair<PBD::ID,list<boost::shared_ptr<Playlist> >*> newp (apl->get_orig_diskstream_id(), new list<boost::shared_ptr<Playlist> >);
            
            x = dspl_map.insert (dspl_map.end(), newp);
      }

      x->second->push_back (pl);
}

void
PlaylistSelector::set_session (Session* s)
{
      ENSURE_GUI_THREAD(bind (mem_fun(*this, &PlaylistSelector::set_session), s));

      session = s;

      if (session) {
            session->GoingAway.connect (bind (mem_fun(*this, &PlaylistSelector::set_session), static_cast<Session*> (0)));
      }
}

void
PlaylistSelector::close_button_click ()
{
      rui = 0;
      hide ();
}

void
PlaylistSelector::selection_changed ()
{
      boost::shared_ptr<Playlist> playlist;

      TreeModel::iterator iter = tree.get_selection()->get_selected();

      if (!iter || rui == 0) {
            /* nothing selected */
            return;
      }

      if ((playlist = ((*iter)[columns.playlist])) != 0) {
            
            boost::shared_ptr<AudioTrack> at;
            boost::shared_ptr<AudioPlaylist> apl;
            
            if ((at = rui->audio_track()) == 0) {
                  /* eh? */
                  return;
            }
            
            if ((apl = boost::dynamic_pointer_cast<AudioPlaylist> (playlist)) == 0) {
                  /* eh? */
                  return;
            }
            
            at->diskstream()->use_playlist (apl);

            hide ();
      }

}
       

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