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diff --git a/src/xml/log-builder.h b/src/xml/log-builder.h
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+++ b/src/xml/log-builder.h
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+// SPDX-License-Identifier: GPL-2.0-or-later
+/** @file
+ * @brief Object building an event log
+ *//*
+ * Authors: see git history
+ *
+ * Copyright (C) 2018 Authors
+ * Copyright 2005 MenTaLguY <mental@rydia.net>
+ * 
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#ifndef SEEN_INKSCAPE_XML_LOG_BUILDER_H
+#define SEEN_INKSCAPE_XML_LOG_BUILDER_H
+
+#include "inkgc/gc-managed.h"
+#include "xml/node-observer.h"
+
+namespace Inkscape {
+namespace XML {
+
+class Event;
+class Node;
+
+/**
+ * @brief Event log builder
+ *
+ * This object records all events sent to it via the public methods in an internal event log.
+ * Calling detach() then returns the built log. Calling discard() will clear all the events
+ * recorded so far.
+ */
+class LogBuilder {
+public:
+    LogBuilder() : _log(nullptr) {}
+    ~LogBuilder() { discard(); }
+
+    /** @name Manipulate the recorded event log
+     * @{ */
+    /**
+     * @brief Clear the internal log
+     */
+    void discard();
+    /**
+     * @brief Get the internal event log
+     * @return The recorded event chain
+     */
+    Event *detach();
+    /*@}*/
+
+    /** @name Record events in the log
+     * @{ */
+    void addChild(Node &node, Node &child, Node *prev);
+
+    void removeChild(Node &node, Node &child, Node *prev);
+
+    void setChildOrder(Node &node, Node &child,
+                       Node *old_prev, Node *new_prev);
+
+    void setContent(Node &node,
+                    Util::ptr_shared old_content,
+                    Util::ptr_shared new_content);
+
+    void setAttribute(Node &node, GQuark name,
+                      Util::ptr_shared old_value,
+                      Util::ptr_shared new_value);
+
+    void setElementName(Node& node, GQuark old_name, GQuark new_name);
+    /*@}*/
+
+private:
+    Event *_log;
+};
+
+}
+}
+
+#endif
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :