1 files changed, 86 insertions, 0 deletions
diff --git a/src/xml/composite-node-observer.h b/src/xml/composite-node-observer.h
new file mode 100644
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+++ b/src/xml/composite-node-observer.h
@@ -0,0 +1,86 @@
+/*
+ * Inkscape::XML::CompositeNodeObserver - combine multiple observers
+ *
+ * Copyright 2005 MenTaLguY <mental@rydia.net>
+ *
+ * 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; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * See the file COPYING for details.
+ *
+ */
+
+#ifndef SEEN_INKSCAPE_XML_COMPOSITE_NODE_OBSERVER_H
+#define SEEN_INKSCAPE_XML_COMPOSITE_NODE_OBSERVER_H
+
+#include "gc-managed.h"
+#include "xml/node-observer.h"
+#include "util/list-container.h"
+
+namespace Inkscape {
+
+namespace XML {
+
+class NodeEventVector;
+
+class CompositeNodeObserver : public NodeObserver, public GC::Managed<> {
+public:
+    struct ObserverRecord : public GC::Managed<> {
+        explicit ObserverRecord(NodeObserver &o) : observer(o), marked(false) {}
+
+        NodeObserver &observer;
+        bool marked; //< if marked for removal
+    };
+    typedef Util::ListContainer<ObserverRecord> ObserverRecordList;
+
+    CompositeNodeObserver()
+    : _iterating(0), _active_marked(0), _pending_marked(0) {}
+
+    void add(NodeObserver &observer);
+    void addListener(NodeEventVector const &vector, void *data);
+    void remove(NodeObserver &observer);
+    void removeListenerByData(void *data);
+    
+    void notifyChildAdded(Node &node, Node &child, Node *prev);
+
+    void notifyChildRemoved(Node &node, Node &child, Node *prev);
+
+    void notifyChildOrderChanged(Node &node, Node &child,
+                                 Node *old_prev, Node *new_prev);
+
+    void notifyContentChanged(Node &node,
+                              Util::SharedCStringPtr old_content,
+                              Util::SharedCStringPtr new_content);
+
+    void notifyAttributeChanged(Node &node, GQuark name,
+                                Util::SharedCStringPtr old_value,
+                                Util::SharedCStringPtr new_value);
+
+private:
+    unsigned _iterating;
+    ObserverRecordList _active;
+    unsigned _active_marked;
+    ObserverRecordList _pending;
+    unsigned _pending_marked;
+
+    void _startIteration() { ++_iterating; }
+    void _finishIteration();
+};
+
+}
+
+}
+
+#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:encoding=utf-8:textwidth=99 :