1 files changed, 40 insertions, 0 deletions
diff --git a/Swiften/StreamStack/StreamStack.cpp b/Swiften/StreamStack/StreamStack.cpp
new file mode 100644
index 0000000..9eb9b4e
--- /dev/null
+++ b/Swiften/StreamStack/StreamStack.cpp
@@ -0,0 +1,40 @@
+#include "Swiften/StreamStack/StreamStack.h"
+
+#include <boost/bind.hpp>
+
+#include "Swiften/Base/foreach.h"
+#include "Swiften/StreamStack/XMPPLayer.h"
+#include "Swiften/StreamStack/LowLayer.h"
+#include "Swiften/StreamStack/StreamLayer.h"
+
+namespace Swift {
+
+StreamStack::StreamStack(boost::shared_ptr<XMPPLayer> xmppLayer, boost::shared_ptr<LowLayer> physicalLayer) : xmppLayer_(xmppLayer), physicalLayer_(physicalLayer) {
+	xmppReadSlotConnection_ = physicalLayer_->onDataRead.connect(boost::bind(&XMPPLayer::parseData, xmppLayer_, _1));
+	xmppWriteSignalConnection_ = xmppLayer_->onWriteData.connect(boost::bind(&LowLayer::writeData, physicalLayer_, _1));
+}
+
+StreamStack::~StreamStack() {
+	// Disconnect the write signal connections to break cyclic signal 
+	// dependencies. The read signal connections have
+	// to remain, since these can be reached from the main event loop.
+	xmppWriteSignalConnection_.disconnect();
+	foreach(const boost::bsignals::connection& connection, writeSignalConnections_) {
+		connection.disconnect();
+	}
+}
+
+void StreamStack::addLayer(boost::shared_ptr<StreamLayer> newLayer) {
+	xmppReadSlotConnection_.disconnect();
+	xmppWriteSignalConnection_.disconnect();
+
+	boost::shared_ptr<LowLayer> lowLayer = (layers_.empty() ? physicalLayer_ : *layers_.rbegin());
+
+	lowLayer->onDataRead.connect(boost::bind(&HighLayer::handleDataRead, newLayer, _1), boost::bsignals::at_front);
+	writeSignalConnections_.push_back(newLayer->onWriteData.connect(boost::bind(&LowLayer::writeData, lowLayer, _1), boost::bsignals::at_front));
+	xmppWriteSignalConnection_ = xmppLayer_->onWriteData.connect(boost::bind(&LowLayer::writeData, newLayer, _1), boost::bsignals::at_front);
+	xmppReadSlotConnection_ = newLayer->onDataRead.connect(boost::bind(&XMPPLayer::parseData, xmppLayer_, _1), boost::bsignals::at_front);
+	layers_.push_back(newLayer);
+}
+
+}