1 files changed, 54 insertions, 0 deletions
diff --git a/dom/base/nsINodeList.h b/dom/base/nsINodeList.h
new file mode 100644
index 0000000000..329c06df9b
--- /dev/null
+++ b/dom/base/nsINodeList.h
@@ -0,0 +1,54 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nsINodeList_h___
+#define nsINodeList_h___
+
+#include "nsWrapperCache.h"
+#include "nsISupports.h"
+#include "nsIContent.h"
+
+// IID for the nsINodeList interface
+#define NS_INODELIST_IID                             \
+  {                                                  \
+    0xadb5e54c, 0x6e96, 0x4102, {                    \
+      0x8d, 0x40, 0xe0, 0x12, 0x3d, 0xcf, 0x48, 0x7a \
+    }                                                \
+  }
+
+class nsIContent;
+class nsINode;
+
+/**
+ * An internal interface for a reasonably fast indexOf.
+ */
+class nsINodeList : public nsISupports, public nsWrapperCache {
+ public:
+  NS_DECLARE_STATIC_IID_ACCESSOR(NS_INODELIST_IID)
+
+  /**
+   * Get the index of the given node in the list.  Will return -1 if the node
+   * is not in the list.
+   */
+  virtual int32_t IndexOf(nsIContent* aContent) = 0;
+
+  /**
+   * Get the root node for this nodelist.
+   */
+  virtual nsINode* GetParentObject() = 0;
+
+  virtual uint32_t Length() = 0;
+  virtual nsIContent* Item(uint32_t aIndex) = 0;
+  nsIContent* IndexedGetter(uint32_t aIndex, bool& aFound) {
+    nsIContent* item = Item(aIndex);
+    aFound = !!item;
+    return item;
+  }
+};
+
+NS_DEFINE_STATIC_IID_ACCESSOR(nsINodeList, NS_INODELIST_IID)
+
+#endif /* nsINodeList_h___ */