1 files changed, 60 insertions, 0 deletions
diff --git a/src/xml/helper-observer.h b/src/xml/helper-observer.h
new file mode 100644
index 0000000..a1c2d7a
--- /dev/null
+++ b/src/xml/helper-observer.h
@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/** @file
+ * TODO: insert short description here
+ *//*
+ * Authors: see git history
+ *
+ * Copyright (C) 2018 Authors
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+#ifndef SEEN_XML_HELPER_OBSERVER
+#define SEEN_XML_HELPER_OBSERVER
+
+#include <cstddef>
+#include <sigc++/sigc++.h>
+
+#include "node-observer.h"
+#include "node.h"
+
+class SPObject;
+
+namespace Inkscape {
+namespace XML {
+
+class Node;
+
+// Very simple observer that just emits a signal if anything happens to a node
+class SignalObserver : public NodeObserver {
+public:
+    SignalObserver();
+    ~SignalObserver() override;
+
+    // Add this observer to the SPObject and remove it from any previous object
+    void set(SPObject* o);
+    void notifyChildAdded(Node&, Node&, Node*) override;
+    void notifyChildRemoved(Node&, Node&, Node*) override;
+    void notifyChildOrderChanged(Node&, Node&, Node*, Node*) override;
+    void notifyContentChanged(Node&, Util::ptr_shared, Util::ptr_shared) override;
+    void notifyAttributeChanged(Node&, GQuark, Util::ptr_shared, Util::ptr_shared) override;
+    void notifyElementNameChanged(Node&, GQuark, GQuark) override;
+    sigc::signal<void ()>& signal_changed();
+private:
+    sigc::signal<void ()> _signal_changed;
+    SPObject* _oldsel;
+};
+
+}
+}
+
+#endif //#ifndef __XML_HELPER_OBSERVER__
+
+/*
+  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 :