Initial revision

git-svn-id: svn://localhost/trunk/ardour2@4 d708f5d6-7413-0410-9779-e7cbd77b26cf

libs/glibmm2/glibmm/signalproxy.cc

@@ -0,0 +1,105 @@
+// -*- c++ -*-
+
+/* $Id$ */
+
+/* signalproxy.cc
+ *
+ * Copyright (C) 2002 The gtkmm Development Team
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <glib-object.h>
+#include <glibmm/exceptionhandler.h>
+#include <glibmm/object.h>
+#include <glibmm/signalproxy.h>
+
+
+namespace Glib
+{
+
+// SignalProxyBase implementation:
+
+SignalProxyBase::SignalProxyBase(Glib::ObjectBase* obj)
+:
+  obj_ (obj)
+{}
+
+
+// SignalProxyNormal implementation:
+
+SignalProxyNormal::SignalProxyNormal(Glib::ObjectBase* obj, const SignalProxyInfo* info)
+:
+  SignalProxyBase (obj),
+  info_           (info)
+{}
+
+SignalProxyNormal::~SignalProxyNormal()
+{}
+
+sigc::slot_base&
+SignalProxyNormal::connect_(const sigc::slot_base& slot, bool after)
+{
+  return connect_impl_(info_->callback, slot, after);
+}
+
+sigc::slot_base&
+SignalProxyNormal::connect_notify_(const sigc::slot_base& slot, bool after)
+{
+  return connect_impl_(info_->notify_callback, slot, after);
+}
+
+sigc::slot_base&
+SignalProxyNormal::connect_impl_(GCallback callback, const sigc::slot_base& slot, bool after)
+{
+  // create a proxy to hold our connection info
+  SignalProxyConnectionNode *const pConnectionNode =
+      new SignalProxyConnectionNode(slot, obj_->gobj());
+
+  // connect it to glib
+  // pConnectionNode will be passed in the data argument to the callback.
+  pConnectionNode->connection_id_ = g_signal_connect_data(
+      obj_->gobj(), info_->signal_name, callback, pConnectionNode,
+      &SignalProxyConnectionNode::destroy_notify_handler,
+      static_cast<GConnectFlags>((after) ? G_CONNECT_AFTER : 0));
+
+  return pConnectionNode->slot_;
+}
+
+void SignalProxyNormal::emission_stop()
+{
+  g_signal_stop_emission_by_name(obj_->gobj(), info_->signal_name);
+}
+
+// static
+void SignalProxyNormal::slot0_void_callback(GObject* self, void* data)
+{
+  // Do not try to call a signal on a disassociated wrapper.
+  if(Glib::ObjectBase::_get_current_wrapper(self))
+  {
+    try
+    {
+      if(sigc::slot_base *const slot = data_to_slot(data))
+        (*static_cast<sigc::slot<void>*>(slot))();
+    }
+    catch(...)
+    {
+      Glib::exception_handlers_invoke();
+    }
+  }
+}
+
+} // namespace Glib
+