1 files changed, 81 insertions, 0 deletions
diff --git a/Source/WebCore/dom/DynamicNodeList.h b/Source/WebCore/dom/DynamicNodeList.h
new file mode 100644
index 0000000..db133b7
--- /dev/null
+++ b/Source/WebCore/dom/DynamicNodeList.h
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
+ *           (C) 1999 Antti Koivisto (koivisto@kde.org)
+ *           (C) 2001 Dirk Mueller (mueller@kde.org)
+ * Copyright (C) 2004, 2006, 2007 Apple Inc. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef DynamicNodeList_h
+#define DynamicNodeList_h
+
+#include "NodeList.h"
+#include <wtf/RefCounted.h>
+#include <wtf/Forward.h>
+#include <wtf/RefPtr.h>
+
+namespace WebCore {
+
+    class Element;
+    class Node;
+
+    class DynamicNodeList : public NodeList {
+    public:
+        struct Caches : RefCounted<Caches> {
+            static PassRefPtr<Caches> create();
+            void reset();
+
+            unsigned cachedLength;
+            Node* lastItem;
+            unsigned lastItemOffset;
+            bool isLengthCacheValid : 1;
+            bool isItemCacheValid : 1;
+        protected:
+            Caches();
+        };
+
+        virtual ~DynamicNodeList();
+
+        bool hasOwnCaches() const { return m_ownsCaches; }
+
+        // DOM methods & attributes for NodeList
+        virtual unsigned length() const;
+        virtual Node* item(unsigned index) const;
+        virtual Node* itemWithName(const AtomicString&) const;
+
+        // Other methods (not part of DOM)
+        void invalidateCache();
+
+    protected:
+        DynamicNodeList(PassRefPtr<Node> rootNode);
+        DynamicNodeList(PassRefPtr<Node> rootNode, Caches*);
+
+        virtual bool nodeMatches(Element*) const = 0;
+
+        RefPtr<Node> m_rootNode;
+        mutable RefPtr<Caches> m_caches;
+        bool m_ownsCaches;
+
+    private:
+        Node* itemForwardsFromCurrent(Node* start, unsigned offset, int remainingOffset) const;
+        Node* itemBackwardsFromCurrent(Node* start, unsigned offset, int remainingOffset) const;
+    };
+
+} // namespace WebCore
+
+#endif // DynamicNodeList_h