new file, derived from old libs/ardour/configuration.cc

diff --git a/libs/pbd/configuration_variable.cc b/libs/pbd/configuration_variable.cc
new file mode 100644 (file)
index 0000000..cacad87
--- /dev/null
+++ b/libs/pbd/configuration_variable.cc
@@ -0,0 +1,109 @@
+/*
+    Copyright (C) 1999-2009 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 <iostream>
+
+#include "pbd/compose.h"
+#include "pbd/configuration_variable.h"
+#include "pbd/debug.h"
+
+using namespace std;
+using namespace PBD;
+
+void
+ConfigVariableBase::add_to_node (XMLNode& node)
+{
+       const std::string v = get_as_string ();
+       DEBUG_TRACE (DEBUG::Configuration, string_compose ("Config variable %1 stored as [%2]\n", _name, v));
+       XMLNode* child = new XMLNode ("Option");
+       child->add_property ("name", _name);
+       child->add_property ("value", v);
+       node.add_child_nocopy (*child);
+}
+
+bool
+ConfigVariableBase::set_from_node (XMLNode const & node)
+{
+       if (node.name() == "Config" || node.name() == "Canvas" || node.name() == "UI") {
+
+               /* ardour.rc */
+
+               const XMLProperty* prop;
+               XMLNodeList nlist;
+               XMLNodeConstIterator niter;
+               XMLNode* child;
+
+               nlist = node.children();
+
+               for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
+
+                       child = *niter;
+
+                       if (child->name() == "Option") {
+                               if ((prop = child->property ("name")) != 0) {
+                                       if (prop->value() == _name) {
+                                               if ((prop = child->property ("value")) != 0) {
+                                                       set_from_string (prop->value());
+                                                       return true;
+                                               }
+                                       }
+                               }
+                       }
+               }
+
+       } else if (node.name() == "Options") {
+
+               /* session file */
+
+               XMLNodeList olist;
+               XMLNodeConstIterator oiter;
+               XMLNode* option;
+               const XMLProperty* opt_prop;
+
+               olist = node.children();
+
+               for (oiter = olist.begin(); oiter != olist.end(); ++oiter) {
+
+                       option = *oiter;
+
+                       if (option->name() == _name) {
+                               if ((opt_prop = option->property ("val")) != 0) {
+                                       set_from_string (opt_prop->value());
+                                       return true;
+                               }
+                       }
+               }
+       }
+
+       return false;
+}
+
+void
+ConfigVariableBase::notify ()
+{
+       // placeholder for any debugging desired when a config variable is modified
+}
+
+void
+ConfigVariableBase::miss ()
+{
+       // placeholder for any debugging desired when a config variable
+       // is set but to the same value as it already has
+}
+