1 files changed, 45 insertions, 0 deletions
diff --git a/layout/generic/nsIFrameUtil.h b/layout/generic/nsIFrameUtil.h
new file mode 100644
index 000000000..57eee670e
--- /dev/null
+++ b/layout/generic/nsIFrameUtil.h
@@ -0,0 +1,45 @@
+/* -*- 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/. */
+
+/* utilities for regression tests based on frame tree comparison */
+
+#ifndef nsIFrameUtil_h___
+#define nsIFrameUtil_h___
+
+#include <stdio.h>
+#include "nsISupports.h"
+
+/* a6cf90d4-15b3-11d2-932e-00805f8add32 */
+#define NS_IFRAME_UTIL_IID \
+ { 0xa6cf90d6, 0x15b3, 0x11d2,{0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32}}
+
+/**
+ * Frame utility interface
+ */
+class nsIFrameUtil : public nsISupports {
+public:
+  NS_DECLARE_STATIC_IID_ACCESSOR(NS_IFRAME_UTIL_IID)
+  /**
+   * Compare two regression data dumps. The return status will be NS_OK
+   * if the trees compare favoribly, otherwise the return will indicate
+   * NS_ERROR_FAILURE. Other return status's will indicate some other
+   * type of failure. The files, aFile1 and aFile2 are closed before
+   * returning. 
+   * aRegressionOutput will vary output, 0 is full output, 1 is brief
+   */
+  NS_IMETHOD CompareRegressionData(FILE* aFile1, FILE* aFile2,int32_t aRegressionOutput) = 0;
+
+  /**
+   * Display the regression dump data stored in aInputFile1 to
+   * aOutputFile . The file is closed before returning. If the
+   * regression data is in error somehow then NS_ERROR_FAILURE will be
+   * returned.
+   */
+  NS_IMETHOD DumpRegressionData(FILE* aInputFile, FILE* aOutputFile) = 0;
+};
+
+NS_DEFINE_STATIC_IID_ACCESSOR(nsIFrameUtil, NS_IFRAME_UTIL_IID)
+
+#endif /* nsIFrameUtil_h___ */