diff --git a/src/gui/CMakeLists.txt b/src/gui/CMakeLists.txt
index 92b9b5008..6d9a3a2df 100644
--- a/src/gui/CMakeLists.txt
+++ b/src/gui/CMakeLists.txt
@@ -63,6 +63,7 @@ set(client_SRCS
     owncloudgui.cpp
     owncloudsetupwizard.cpp
     protocolwidget.cpp
+    activitydata.cpp
     activitylistmodel.cpp
     activitywidget.cpp
     activityitemdelegate.cpp
diff --git a/src/gui/activitydata.cpp b/src/gui/activitydata.cpp
new file mode 100644
index 000000000..2d8001c9f
--- /dev/null
+++ b/src/gui/activitydata.cpp
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) by Klaas Freitag <freitag@owncloud.com>
+ *
+ * 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; version 2 of the License.
+ *
+ * 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.
+ */
+
+#include <QtCore>
+
+#include "activitydata.h"
+
+
+namespace OCC
+{
+
+bool Activity::operator<( const Activity& val ) const {
+    return _dateTime.toMSecsSinceEpoch() > val._dateTime.toMSecsSinceEpoch();
+}
+
+bool Activity::operator==( const Activity& val ) const {
+    return (_type == val._type && _id == val._id && _accName == val._accName);
+}
+
+Activity::Identifier Activity::ident() const {
+    return Identifier( _id, _accName );
+}
+
+
+}
diff --git a/src/gui/activitydata.h b/src/gui/activitydata.h
index 68067f553..f35611ede 100644
--- a/src/gui/activitydata.h
+++ b/src/gui/activitydata.h
@@ -26,17 +26,6 @@ namespace OCC {
 class ActivityLink
 {
 public:
-    QVariantHash toVariantHash() const {
-        QVariantHash hash;
-
-        hash["label"] = _label;
-        hash["link"]  = _link;
-        hash["verb"]  = _verb;
-        hash["primary"] = _isPrimary;
-
-        return hash;
-    }
-
     QString _label;
     QString _link;
     QString _verb;
@@ -54,10 +43,13 @@ public:
 class Activity
 {
 public:
+    typedef QPair<qlonglong, QString> Identifier;
+
     enum Type {
         ActivityType,
         NotificationType
     };
+
     Type      _type;
     qlonglong _id;
     QString   _subject;
@@ -73,10 +65,11 @@ public:
      * @param val
      * @return
      */
-    bool operator<( const Activity& val ) const {
-        return _dateTime.toMSecsSinceEpoch() > val._dateTime.toMSecsSinceEpoch();
-    }
+    bool operator<( const Activity& val ) const;
 
+    bool operator==( const Activity& val ) const;
+
+    Identifier ident() const;
 };
 
 /* ==================================================================== */