1 files changed, 37 insertions, 0 deletions
diff --git a/layout/xul/nsPIBoxObject.h b/layout/xul/nsPIBoxObject.h
new file mode 100644
index 0000000000..46ec6ea387
--- /dev/null
+++ b/layout/xul/nsPIBoxObject.h
@@ -0,0 +1,37 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 nsPIBoxObject_h___
+#define nsPIBoxObject_h___
+
+#include "nsIBoxObject.h"
+
+// {2b8bb262-1b0f-4572-ba87-5d4ae4954445}
+#define NS_PIBOXOBJECT_IID \
+{ 0x2b8bb262, 0x1b0f, 0x4572, \
+  { 0xba, 0x87, 0x5d, 0x4a, 0xe4, 0x95, 0x44, 0x45 } }
+
+
+class nsIContent;
+
+class nsPIBoxObject : public nsIBoxObject
+{
+public:
+  NS_DECLARE_STATIC_IID_ACCESSOR(NS_PIBOXOBJECT_IID)
+
+  virtual nsresult Init(nsIContent* aContent) = 0;
+
+  // Drop the weak ref to the content node as needed
+  virtual void Clear() = 0;
+
+  // The values cached by the implementation of this interface should be
+  // cleared when this method is called.
+  virtual void ClearCachedValues() = 0;
+};
+
+NS_DEFINE_STATIC_IID_ACCESSOR(nsPIBoxObject, NS_PIBOXOBJECT_IID)
+
+#endif
+