2 * Copyright (C) 2000-2016 Paul Davis <paul@linuxaudiosystems.com>
3 * Copyright (C) 2006 Taybin Rutkin <taybin@taybin.com>
4 * Copyright (C) 2007-2016 Tim Mayberry <mojofunk@gmail.com>
5 * Copyright (C) 2008-2011 Carl Hetherington <carl@carlh.net>
6 * Copyright (C) 2009-2010 David Robillard <d@drobilla.net>
7 * Copyright (C) 2015-2017 Robin Gareus <robin@gareus.org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write to the Free Software Foundation, Inc.,
21 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
25 #include <io.h> // Microsoft's nearest equivalent to <unistd.h>
30 #include <glibmm/fileutils.h>
31 #include <glibmm/miscutils.h>
33 #include "pbd/debug.h"
34 #include "pbd/stateful.h"
35 #include "pbd/types_convert.h"
36 #include "pbd/property_list.h"
37 #include "pbd/properties.h"
38 #include "pbd/destructible.h"
39 #include "pbd/xml++.h"
40 #include "pbd/error.h"
48 int Stateful::current_state_version = 0;
49 int Stateful::loading_state_version = 0;
51 Glib::Threads::Private<bool> Stateful::_regenerate_xml_or_string_ids;
56 , _properties (new OwnedPropertyList)
57 , _stateful_frozen (0)
61 Stateful::~Stateful ()
65 // Do not delete _extra_xml. The use of add_child_nocopy()
66 // means it needs to live on indefinately.
72 Stateful::add_extra_xml (XMLNode& node)
74 if (_extra_xml == 0) {
75 _extra_xml = new XMLNode ("Extra");
78 _extra_xml->remove_nodes_and_delete (node.name());
79 _extra_xml->add_child_nocopy (node);
83 Stateful::extra_xml (const string& str, bool add_if_missing)
88 node = _extra_xml->child (str.c_str());
91 if (!node && add_if_missing) {
92 node = new XMLNode (str);
93 add_extra_xml (*node);
100 Stateful::save_extra_xml (const XMLNode& node)
102 /* Looks for the child node called "Extra" and makes _extra_xml
103 point to a copy of it. Will delete any existing node pointed
104 to by _extra_xml if a new Extra node is found, but not
108 const XMLNode* xtra = node.child ("Extra");
112 _extra_xml = new XMLNode (*xtra);
117 Stateful::add_instant_xml (XMLNode& node, const std::string& directory_path)
119 if (!Glib::file_test (directory_path, Glib::FILE_TEST_IS_DIR)) {
120 if (g_mkdir_with_parents (directory_path.c_str(), 0755) != 0) {
121 error << string_compose(_("Error: could not create directory %1"), directory_path) << endmsg;
126 if (_instant_xml == 0) {
127 _instant_xml = new XMLNode ("instant");
130 _instant_xml->remove_nodes_and_delete (node.name());
131 _instant_xml->add_child_copy (node);
133 std::string instant_xml_path = Glib::build_filename (directory_path, "instant.xml");
136 tree.set_filename(instant_xml_path);
138 /* Important: the destructor for an XMLTree deletes
139 all of its nodes, starting at _root. We therefore
140 cannot simply hand it our persistent _instant_xml
141 node as its _root, because we will lose it whenever
142 the Tree goes out of scope.
144 So instead, copy the _instant_xml node (which does
145 a deep copy), and hand that to the tree.
148 XMLNode* copy = new XMLNode (*_instant_xml);
149 tree.set_root (copy);
152 error << string_compose(_("Error: could not write %1"), instant_xml_path) << endmsg;
157 Stateful::instant_xml (const string& str, const std::string& directory_path)
159 if (_instant_xml == 0) {
161 std::string instant_xml_path = Glib::build_filename (directory_path, "instant.xml");
163 if (Glib::file_test (instant_xml_path, Glib::FILE_TEST_EXISTS)) {
165 if (tree.read(instant_xml_path)) {
166 _instant_xml = new XMLNode(*(tree.root()));
168 warning << string_compose(_("Could not understand XML file %1"), instant_xml_path) << endmsg;
176 const XMLNodeList& nlist = _instant_xml->children();
177 XMLNodeConstIterator i;
179 for (i = nlist.begin(); i != nlist.end(); ++i) {
180 if ((*i)->name() == str) {
188 /** Forget about any changes to this object's properties */
190 Stateful::clear_changes ()
192 for (OwnedPropertyList::iterator i = _properties->begin(); i != _properties->end(); ++i) {
193 i->second->clear_changes ();
198 Stateful::get_changes_as_properties (Command* cmd) const
200 PropertyList* pl = new PropertyList;
202 for (OwnedPropertyList::const_iterator i = _properties->begin(); i != _properties->end(); ++i) {
203 i->second->get_changes_as_properties (*pl, cmd);
209 /** Set our property values from an XML node.
210 * Derived types can call this from set_state() (or elsewhere)
211 * to get basic property setting done.
212 * @return IDs of properties that were changed.
215 Stateful::set_values (XMLNode const & node)
219 for (OwnedPropertyList::iterator i = _properties->begin(); i != _properties->end(); ++i) {
220 if (i->second->set_value (node)) {
231 Stateful::apply_changes (const PropertyList& property_list)
234 PropertyList::const_iterator p;
236 DEBUG_TRACE (DEBUG::Stateful, string_compose ("Stateful %1 setting properties from list of %2\n", this, property_list.size()));
238 for (PropertyList::const_iterator pp = property_list.begin(); pp != property_list.end(); ++pp) {
239 DEBUG_TRACE (DEBUG::Stateful, string_compose ("in plist: %1\n", pp->second->property_name()));
242 for (PropertyList::const_iterator i = property_list.begin(); i != property_list.end(); ++i) {
243 if ((p = _properties->find (i->first)) != _properties->end()) {
247 string_compose ("actually setting property %1 using %2\n", p->second->property_name(), i->second->property_name())
250 if (apply_changes (*i->second)) {
254 DEBUG_TRACE (DEBUG::Stateful, string_compose ("passed in property %1 not found in own property list\n",
255 i->second->property_name()));
266 /** Add property states to an XML node.
267 * @param owner_state Node.
270 Stateful::add_properties (XMLNode& owner_state)
272 for (OwnedPropertyList::iterator i = _properties->begin(); i != _properties->end(); ++i) {
273 i->second->get_value (owner_state);
278 Stateful::add_property (PropertyBase& s)
280 _properties->add (s);
284 Stateful::send_change (const PropertyChange& what_changed)
286 if (what_changed.empty()) {
291 Glib::Threads::Mutex::Lock lm (_lock);
292 if (property_changes_suspended ()) {
293 _pending_changed.add (what_changed);
298 PropertyChanged (what_changed);
302 Stateful::suspend_property_changes ()
304 g_atomic_int_add (&_stateful_frozen, 1);
308 Stateful::resume_property_changes ()
310 PropertyChange what_changed;
313 Glib::Threads::Mutex::Lock lm (_lock);
315 if (property_changes_suspended() && g_atomic_int_dec_and_test (&_stateful_frozen) == FALSE) {
319 if (!_pending_changed.empty()) {
320 what_changed = _pending_changed;
321 _pending_changed.clear ();
325 mid_thaw (what_changed);
327 send_change (what_changed);
331 Stateful::changed() const
333 for (OwnedPropertyList::const_iterator i = _properties->begin(); i != _properties->end(); ++i) {
334 if (i->second->changed()) {
343 Stateful::apply_changes (const PropertyBase& prop)
345 OwnedPropertyList::iterator i = _properties->find (prop.property_id());
346 if (i == _properties->end()) {
350 i->second->apply_changes (&prop);
355 Stateful::property_factory (const XMLNode& history_node) const
357 PropertyList* prop_list = new PropertyList;
359 for (OwnedPropertyList::const_iterator i = _properties->begin(); i != _properties->end(); ++i) {
360 PropertyBase* prop = i->second->clone_from_xml (history_node);
363 prop_list->add (prop);
371 Stateful::rdiff (vector<Command*>& cmds) const
373 for (OwnedPropertyList::const_iterator i = _properties->begin(); i != _properties->end(); ++i) {
374 i->second->rdiff (cmds);
379 Stateful::clear_owned_changes ()
381 for (OwnedPropertyList::iterator i = _properties->begin(); i != _properties->end(); ++i) {
382 i->second->clear_owned_changes ();
387 Stateful::set_id (const XMLNode& node)
389 bool* regen = _regenerate_xml_or_string_ids.get();
391 if (regen && *regen) {
396 if (node.get_property ("id", _id)) {
404 Stateful::reset_id ()
410 Stateful::set_id (const string& str)
412 bool* regen = _regenerate_xml_or_string_ids.get();
414 if (regen && *regen) {
422 Stateful::regenerate_xml_or_string_ids () const
424 bool* regen = _regenerate_xml_or_string_ids.get();
425 if (regen && *regen) {
433 Stateful::set_regenerate_xml_and_string_ids_in_this_thread (bool yn)
435 bool* val = new bool (yn);
436 _regenerate_xml_or_string_ids.set (val);