libs/ardour/named_selection.cc

   1 /*
   2     Copyright (C) 2003 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include "pbd/failed_constructor.h"
  21 #include "pbd/error.h"
  22
  23 #include "ardour/session.h"
  24 #include "ardour/utils.h"
  25 #include "ardour/playlist.h"
  26 #include "ardour/named_selection.h"
  27 #include "ardour/session_playlists.h"
  28
  29 #include "i18n.h"
  30
  31 using namespace std;
  32 using namespace ARDOUR;
  33 using namespace PBD;
  34
  35 PBD::Signal1<void,NamedSelection*> NamedSelection::NamedSelectionCreated;
  36
  37 typedef std::list<boost::shared_ptr<Playlist> > PlaylistList;
  38
  39 NamedSelection::NamedSelection (string n, PlaylistList& l)
  40         : name (n)
  41 {
  42         playlists = l;
  43         for (PlaylistList::iterator i = playlists.begin(); i != playlists.end(); ++i) {
  44                 string new_name;
  45
  46                 /* rename playlists to reflect our ownership */
  47
  48                 new_name = name;
  49                 new_name += '/';
  50                 new_name += (*i)->name();
  51
  52                 (*i)->set_name (new_name);
  53                 (*i)->use();
  54         }
  55 }
  56
  57 NamedSelection::NamedSelection (Session& session, const XMLNode& node)
  58 {
  59         XMLNode* lists_node;
  60         const XMLProperty* property;
  61
  62         if ((property = node.property ("name")) == 0) {
  63                 throw failed_constructor();
  64         }
  65
  66         name = property->value();
  67
  68         if ((lists_node = find_named_node (node, "Playlists")) == 0) {
  69                 return;
  70         }
  71
  72         XMLNodeList nlist = lists_node->children();
  73         XMLNodeConstIterator niter;
  74
  75         for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
  76
  77                 const XMLNode* plnode;
  78                 string playlist_name;
  79                 boost::shared_ptr<Playlist> playlist;
  80
  81                 plnode = *niter;
  82
  83                 if ((property = plnode->property ("name")) != 0) {
  84                         if ((playlist = session.playlists->by_name (property->value())) != 0) {
  85                                 playlist->use();
  86                                 playlists.push_back (playlist);
  87                         } else {
  88                                 warning << string_compose (_("Chunk %1 uses an unknown playlist \"%2\""), name, property->value()) << endmsg;
  89                         }
  90                 } else {
  91                         error << string_compose (_("Chunk %1 contains misformed playlist information"), name) << endmsg;
  92                         throw failed_constructor();
  93                 }
  94         }
  95
  96         NamedSelectionCreated (this);
  97 }
  98
  99 NamedSelection::~NamedSelection ()
 100 {
 101         for (PlaylistList::iterator i = playlists.begin(); i != playlists.end(); ++i) {
 102                 /* XXX who really owns these? us or the session? */
 103                 (*i)->drop_references ();
 104                 (*i)->release ();
 105         }
 106 }
 107
 108 int
 109 NamedSelection::set_state (const XMLNode& /*node*/, int /*version*/)
 110 {
 111         return 0;
 112 }
 113
 114 XMLNode&
 115 NamedSelection::get_state ()
 116 {
 117         XMLNode* root = new XMLNode ("NamedSelection");
 118         XMLNode* child;
 119
 120         root->add_property ("name", name);
 121         child = root->add_child ("Playlists");
 122
 123         for (PlaylistList::iterator i = playlists.begin(); i != playlists.end(); ++i) {
 124                 XMLNode* plnode = new XMLNode ("Playlist");
 125
 126                 plnode->add_property ("name", (*i)->name());
 127                 child->add_child_nocopy (*plnode);
 128         }
 129
 130         return *root;
 131 }