rollback to 3428, before the mysterious removal of libs/* at 3431/3432

git-svn-id: svn://localhost/ardour2/branches/3.0@3435 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 118 insertions, 0 deletions

diff --git a/libs/pbd/controllable.cc b/libs/pbd/controllable.cc
new file mode 100644
index 0000000000..c15b7a8cf2
--- /dev/null
+++ b/libs/pbd/controllable.cc
@@ -0,0 +1,118 @@
+/*
+    Copyright (C) 2000-2007 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 <pbd/controllable.h>
+#include <pbd/xml++.h>
+#include <pbd/error.h>
+
+#include "i18n.h"
+
+using namespace PBD;
+
+sigc::signal<void,Controllable*> Controllable::Destroyed;
+sigc::signal<bool,Controllable*> Controllable::StartLearning;
+sigc::signal<void,Controllable*> Controllable::StopLearning;
+sigc::signal<void,Controllable*,int,int> Controllable::CreateBinding;
+sigc::signal<void,Controllable*> Controllable::DeleteBinding;
+
+Glib::Mutex* Controllable::registry_lock = 0;
+Controllable::Controllables Controllable::registry;
+
+Controllable::Controllable (std::string name)
+	: _name (name)
+{
+	if (registry_lock == 0) {
+		registry_lock = new Glib::Mutex;
+	}
+
+	add ();
+}
+
+void
+Controllable::add ()
+{
+	Glib::Mutex::Lock lm (*registry_lock);
+	registry.insert (this);
+	this->GoingAway.connect (mem_fun (this, &Controllable::remove));
+}
+
+void
+Controllable::remove ()
+{
+	Glib::Mutex::Lock lm (*registry_lock);
+	for (Controllables::iterator i = registry.begin(); i != registry.end(); ++i) {
+		if ((*i) == this) {
+			registry.erase (i);
+			break;
+		}
+	}
+}
+
+Controllable*
+Controllable::by_id (const ID& id)
+{
+	Glib::Mutex::Lock lm (*registry_lock);
+
+	for (Controllables::iterator i = registry.begin(); i != registry.end(); ++i) {
+		if ((*i)->id() == id) {
+			return (*i);
+		}
+	}
+	return 0;
+}
+
+
+Controllable*
+Controllable::by_name (const std::string& str)
+{
+	Glib::Mutex::Lock lm (*registry_lock);
+
+	for (Controllables::iterator i = registry.begin(); i != registry.end(); ++i) {
+		if ((*i)->_name == str) {
+			return (*i);
+		}
+	}
+	return 0;
+}
+
+XMLNode&
+Controllable::get_state ()
+{
+	XMLNode* node = new XMLNode (X_("controllable"));
+	char buf[64];
+
+	node->add_property (X_("name"), _name); // not reloaded from XML state, just there to look at
+	_id.print (buf, sizeof (buf));
+	node->add_property (X_("id"), buf);
+	return *node;
+}
+
+int
+Controllable::set_state (const XMLNode& node)
+{
+	const XMLProperty* prop = node.property (X_("id"));
+
+	if (prop) {
+		_id = prop->value();
+		return 0;
+	} else {
+		error << _("Controllable state node has no ID property") << endmsg;
+		return -1;
+	}
+}