#include <unistd.h>
+#include "pbd/debug.h"
#include "pbd/stateful.h"
+#include "pbd/property_list.h"
+#include "pbd/properties.h"
+#include "pbd/destructible.h"
#include "pbd/filesystem.h"
#include "pbd/xml++.h"
#include "pbd/error.h"
#include "i18n.h"
+using namespace std;
+
namespace PBD {
+int Stateful::current_state_version = 0;
+int Stateful::loading_state_version = 0;
+
Stateful::Stateful ()
+ : _frozen (0)
+ , _no_property_changes (false)
+ , _properties (new OwnedPropertyList)
{
_extra_xml = 0;
_instant_xml = 0;
Stateful::~Stateful ()
{
+ delete _properties;
+
// Do not delete _extra_xml. The use of add_child_nocopy()
// means it needs to live on indefinately.
return 0;
}
+/** Forget about any old state for this object */
+void
+Stateful::clear_history ()
+{
+ for (OwnedPropertyList::iterator i = _properties->begin(); i != _properties->end(); ++i) {
+ i->second->clear_history ();
+ }
+}
+
+void
+Stateful::diff (PropertyList& before, PropertyList& after) const
+{
+ for (OwnedPropertyList::const_iterator i = _properties->begin(); i != _properties->end(); ++i) {
+ i->second->diff (before, after);
+ }
+}
+
+/** Set state of some/all _properties from an XML node.
+ * @param owner_state Node.
+ * @return PropertyChanges made.
+ */
+PropertyChange
+Stateful::set_properties (XMLNode const & owner_state)
+{
+ PropertyChange c;
+
+ for (OwnedPropertyList::iterator i = _properties->begin(); i != _properties->end(); ++i) {
+ if (i->second->set_state_from_owner_state (owner_state)) {
+ c.add (i->first);
+ }
+ }
+
+ post_set ();
+
+ return c;
+}
+
+PropertyChange
+Stateful::set_properties (const PropertyList& property_list)
+{
+ PropertyChange c;
+ PropertyList::const_iterator p;
+
+ DEBUG_TRACE (DEBUG::Stateful, string_compose ("Stateful %1 setting properties from list of %2\n", this, property_list.size()));
+
+ for (PropertyList::const_iterator pp = property_list.begin(); pp != property_list.end(); ++pp) {
+ DEBUG_TRACE (DEBUG::Stateful, string_compose ("in plist: %1\n", pp->second->property_name()));
+ }
+
+ for (PropertyList::const_iterator i = property_list.begin(); i != property_list.end(); ++i) {
+ if ((p = _properties->find (i->first)) != _properties->end()) {
+ DEBUG_TRACE (DEBUG::Stateful, string_compose ("actually setting property %1\n", p->second->property_name()));
+ if (set_property (*i->second)) {
+ c.add (i->first);
+ }
+ } else {
+ DEBUG_TRACE (DEBUG::Stateful, string_compose ("passed in property %1 not found in own property list\n",
+ i->second->property_name()));
+ }
+ }
+
+ post_set ();
+
+ send_change (c);
+
+ return c;
+}
+
+/** Add property states to an XML node.
+ * @param owner_state Node.
+ */
+void
+Stateful::add_properties (XMLNode& owner_state)
+{
+ for (OwnedPropertyList::iterator i = _properties->begin(); i != _properties->end(); ++i) {
+ i->second->add_state_to_owner_state (owner_state);
+ }
+}
+
+void
+Stateful::add_property (PropertyBase& s)
+{
+ _properties->add (s);
+}
+
+void
+Stateful::send_change (const PropertyChange& what_changed)
+{
+ if (what_changed.empty()) {
+ return;
+ }
+
+ {
+ Glib::Mutex::Lock lm (_lock);
+ if (_frozen) {
+ _pending_changed.add (what_changed);
+ return;
+ }
+ }
+
+ PropertyChanged (what_changed);
+}
+
+void
+Stateful::suspend_property_changes ()
+{
+ _frozen++;
+}
+
+void
+Stateful::resume_property_changes ()
+{
+ PropertyChange what_changed;
+
+ {
+ Glib::Mutex::Lock lm (_lock);
+
+ if (_frozen && --_frozen > 0) {
+ return;
+ }
+
+ if (!_pending_changed.empty()) {
+ what_changed = _pending_changed;
+ _pending_changed.clear ();
+ }
+ }
+
+ mid_thaw (what_changed);
+
+ send_change (what_changed);
+}
+
+bool
+Stateful::changed() const
+{
+ for (OwnedPropertyList::const_iterator i = _properties->begin(); i != _properties->end(); ++i) {
+ if (i->second->changed()) {
+ return true;
+ }
+ }
+
+ return false;
+}
+
+bool
+Stateful::set_property (const PropertyBase& prop)
+{
+ OwnedPropertyList::iterator i = _properties->find (prop.property_id());
+ if (i == _properties->end()) {
+ return false;
+ }
+
+ i->second->set_state_from_property (&prop);
+ return true;
+}
+
} // namespace PBD