diff --git a/src/invitelistdialog.cpp b/src/invitelistdialog.cpp
new file mode 100644
index 0000000..797a312
--- /dev/null
+++ b/src/invitelistdialog.cpp
@@ -0,0 +1,93 @@
+/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
+/*
+ * Copyright (c) 2013, Regents of the University of California
+ *                     Yingdi Yu
+ *
+ * BSD license, See the LICENSE file for more information
+ *
+ * Author: Yingdi Yu <yingdi@cs.ucla.edu>
+ */
+
+#include "invitelistdialog.h"
+#include "ui_invitelistdialog.h"
+
+using namespace std;
+
+InviteListDialog::InviteListDialog(ndn::Ptr<ContactManager> contactManager,
+				   QWidget *parent) 
+  :QDialog(parent)
+  , ui(new Ui::InviteListDialog)
+  , m_contactManager(contactManager)
+  , m_contactListModel(new QStringListModel)
+{
+  ui->setupUi(this);
+
+  refreshContactList();
+
+  ui->contactListView->setModel(m_contactListModel);
+
+  connect(ui->inviteButton, SIGNAL(clicked()),
+	  this, SLOT(inviteWrapper()));
+  connect(ui->cancelButton, SIGNAL(clicked()),
+	  this, SLOT(onCancelClicked()));
+}
+
+InviteListDialog::~InviteListDialog()
+{
+  delete ui;
+  delete m_contactListModel;
+}
+
+void
+InviteListDialog::setInviteLabel(string label)
+{ 
+  string msg("invite to chatroom:\n");
+  msg += label;
+  ui->inviteLabel->setText(QString::fromUtf8(msg.c_str())); 
+  refreshContactList();
+}
+
+void
+InviteListDialog::refreshContactList()
+{
+  m_contactList = m_contactManager->getContactItemList();
+  QStringList contactNameList;
+  for(int i = 0; i < m_contactList.size(); i++)
+    {
+      contactNameList << QString::fromUtf8(m_contactList[i]->getAlias().c_str());
+    }
+
+  m_contactListModel->setStringList(contactNameList);
+}
+
+void
+InviteListDialog::inviteWrapper()
+{
+  QModelIndexList selected = ui->contactListView->selectionModel()->selectedIndexes();
+  QString text = m_contactListModel->data(selected.first(), Qt::DisplayRole).toString();
+  string alias = text.toUtf8().constData();
+
+  int i = 0;
+  for(; i < m_contactList.size(); i++)
+    {
+      if(alias == m_contactList[i]->getAlias())
+        break;
+    }
+
+  QString invitedContactNamespace = QString::fromUtf8(m_contactList[i]->getNameSpace().toUri().c_str());
+
+  bool isIntroducer = true;
+
+  emit invitionDetermined(invitedContactNamespace, isIntroducer);
+
+  this->close();
+}
+
+void
+InviteListDialog::onCancelClicked()
+{ this->close(); }
+
+#if WAF
+#include "invitelistdialog.moc"
+#include "invitelistdialog.cpp.moc"
+#endif