libs/ardour/session_command.cc

   1 /*
   2     Copyright (C) 2000-2007 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 <string>
  21
  22 #include "ardour/automation_list.h"
  23 #include "ardour/location.h"
  24 #include "ardour/midi_automation_list_binder.h"
  25 #include "ardour/playlist.h"
  26 #include "ardour/region.h"
  27 #include "ardour/region_factory.h"
  28 #include "ardour/route.h"
  29 #include "ardour/session.h"
  30 #include "ardour/session_playlists.h"
  31 #include "ardour/source.h"
  32 #include "ardour/tempo.h"
  33 #include "evoral/Curve.hpp"
  34 #include "pbd/error.h"
  35 #include "pbd/failed_constructor.h"
  36 #include "pbd/id.h"
  37 #include "pbd/memento_command.h"
  38 #include "pbd/stateful_diff_command.h"
  39 #include "pbd/statefuldestructible.h"
  40 #include "pbd/types_convert.h"
  41
  42 class Command;
  43
  44 using namespace PBD;
  45 using namespace ARDOUR;
  46
  47 #include "pbd/i18n.h"
  48
  49 void Session::register_with_memento_command_factory(PBD::ID id, PBD::StatefulDestructible *ptr)
  50 {
  51     registry[id] = ptr;
  52 }
  53
  54 Command *
  55 Session::memento_command_factory(XMLNode *n)
  56 {
  57     PBD::ID id;
  58     XMLNode *before = 0, *after = 0;
  59     XMLNode *child = 0;
  60
  61     /* XXX: HACK! */
  62     bool have_id = n->get_property ("obj-id", id);
  63
  64     /* get before/after */
  65
  66     if (n->name() == "MementoCommand") {
  67             before = new XMLNode(*n->children().front());
  68             after = new XMLNode(*n->children().back());
  69             child = before;
  70     } else if (n->name() == "MementoUndoCommand") {
  71             before = new XMLNode(*n->children().front());
  72             child = before;
  73     } else if (n->name() == "MementoRedoCommand") {
  74             after = new XMLNode(*n->children().front());
  75             child = after;
  76     } else if (n->name() == "PlaylistCommand") {
  77             before = new XMLNode(*n->children().front());
  78             after = new XMLNode(*n->children().back());
  79             child = before;
  80     }
  81
  82     if (!child) {
  83             info << string_compose (_("Tried to reconstitute a MementoCommand with no contents, failing. id=%1"), id.to_s()) << endmsg;
  84             return 0;
  85     }
  86
  87     /* create command */
  88     std::string type_name;
  89     n->get_property ("type-name", type_name);
  90
  91     if (type_name == "ARDOUR::AudioRegion" || type_name == "ARDOUR::MidiRegion" || type_name == "ARDOUR::Region") {
  92             boost::shared_ptr<Region> r = RegionFactory::region_by_id (id);
  93             if (r) {
  94                     return new MementoCommand<Region>(*r, before, after);
  95             }
  96
  97     } else if (type_name == "ARDOUR::AudioSource" || type_name == "ARDOUR::MidiSource") {
  98             if (sources.count(id))
  99                     return new MementoCommand<Source>(*sources[id], before, after);
 100
 101     } else if (type_name == "ARDOUR::Location") {
 102             Location* loc = _locations->get_location_by_id(id);
 103             if (loc) {
 104                     return new MementoCommand<Location>(*loc, before, after);
 105             }
 106
 107     } else if (type_name == "ARDOUR::Locations") {
 108             return new MementoCommand<Locations>(*_locations, before, after);
 109
 110     } else if (type_name == "ARDOUR::TempoMap") {
 111             return new MementoCommand<TempoMap>(*_tempo_map, before, after);
 112
 113     } else if (type_name == "ARDOUR::Playlist" || type_name == "ARDOUR::AudioPlaylist" || type_name == "ARDOUR::MidiPlaylist") {
 114             if (boost::shared_ptr<Playlist> pl = playlists->by_name(child->property("name")->value())) {
 115                     return new MementoCommand<Playlist>(*(pl.get()), before, after);
 116             }
 117
 118     } else if (type_name == "ARDOUR::Route" || type_name == "ARDOUR::AudioTrack" || type_name == "ARDOUR::MidiTrack") {
 119                 if (boost::shared_ptr<Route> r = route_by_id(id)) {
 120                         return new MementoCommand<Route>(*r, before, after);
 121                 } else {
 122                         error << string_compose (X_("Route %1 not found in session"), id) << endmsg;
 123                 }
 124
 125     } else if (type_name == "Evoral::Curve" || type_name == "ARDOUR::AutomationList") {
 126             if (have_id) {
 127                     std::map<PBD::ID, AutomationList*>::iterator i = automation_lists.find(id);
 128                     if (i != automation_lists.end()) {
 129                             return new MementoCommand<AutomationList>(*i->second, before, after);
 130                     }
 131             } else {
 132                     return new MementoCommand<AutomationList> (
 133                             new MidiAutomationListBinder (n, sources),
 134                             before, after
 135                             );
 136             }
 137
 138             std::cerr << "Alist " << id << " not found\n";
 139
 140     } else if (registry.count(id)) { // For Editor and AutomationLine which are off-limits herea
 141             return new MementoCommand<PBD::StatefulDestructible>(*registry[id], before, after);
 142     }
 143
 144     /* we failed */
 145     info << string_compose (_("Could not reconstitute MementoCommand from XMLNode. object type = %1 id = %2"), type_name, id.to_s()) << endmsg;
 146
 147     return 0 ;
 148 }
 149
 150 Command *
 151 Session::stateful_diff_command_factory (XMLNode* n)
 152 {
 153         PBD::ID id;
 154         std::string type_name;
 155         if (!n->get_property ("obj-id", id) || !n->get_property ("type-name", type_name)) {
 156                 error << _("Could get object ID and type name for StatefulDiffCommand from XMLNode.")
 157                       << endmsg;
 158                       return 0;
 159         }
 160
 161         if ((type_name == "ARDOUR::AudioRegion" || type_name == "ARDOUR::MidiRegion")) {
 162                 boost::shared_ptr<Region> r = RegionFactory::region_by_id (id);
 163                 if (r) {
 164                         return new StatefulDiffCommand (r, *n);
 165                 }
 166
 167         } else if (type_name == "ARDOUR::AudioPlaylist" ||  type_name == "ARDOUR::MidiPlaylist") {
 168                 boost::shared_ptr<Playlist> p = playlists->by_id (id);
 169                 if (p) {
 170                         return new StatefulDiffCommand (p, *n);
 171                 } else {
 172                         std::cerr << "Playlist with ID = " << id << " not found\n";
 173                 }
 174         }
 175
 176         /* we failed */
 177
 178         info << string_compose (
 179                 _("Could not reconstitute StatefulDiffCommand from XMLNode. object type = %1 id = %2"), type_name, id.to_s())
 180               << endmsg;
 181
 182         return 0;
 183 }