Adding public routine ComparePoints for mjudge

content/base/src/nsRange.cpp

@@ -192,6 +192,31 @@ nsresult nsRange::QueryInterface(const nsIID& aIID,
 }
 
 
+/******************************************************
+ * Public helper routines
+ ******************************************************/
+
+//
+// Returns -1 if point1 < point2, 1, if point1 > point2,
+// 0 if error or if point1 == point2.
+//
+PRInt32 ComparePoints(nsIDOMNode* aParent1, PRInt32 aOffset1,
+                      nsIDOMNode* aParent2, PRInt32 aOffset2)
+{
+  if (aParent1 == aParent2 && aOffset1 == aOffset2)
+    return 0;
+  nsRange* range = new nsRange;
+  nsresult res = range->SetStart(aParent1, aOffset1);
+  if (!NS_SUCCEEDED(res))
+    return 0;
+  res = range->SetEnd(aParent2, aOffset2);
+  delete range;
+  if (NS_SUCCEEDED(res))
+    return -1;
+  else
+    return 1;
+}
+
 /******************************************************
  * Private helper routines
  ******************************************************/

content/base/src/nsRange.h

@@ -0,0 +1,26 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public License
+ * Version 1.0 (the "NPL"); you may not use this file except in
+ * compliance with the NPL.  You may obtain a copy of the NPL at
+ * http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the NPL is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+ * for the specific language governing rights and limitations under the
+ * NPL.
+ *
+ * The Initial Developer of this code under the NPL is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+ * Reserved.
+ */
+
+/*
+ * nsRange.h : Useful routines for users of nsRange objects.
+ * This doesn't include the definition of the nsRange class itself,
+ * since range users should always get their ranges via nsIDOMRange.
+ */
+
+PRInt32 ComparePoints(nsIDOMNode* aParent1, PRInt32 aOffset1,
+                      nsIDOMNode* aParent2, PRInt32 aOffset2);

layout/base/src/nsRange.cpp

@@ -192,6 +192,31 @@ nsresult nsRange::QueryInterface(const nsIID& aIID,
 }
 
 
+/******************************************************
+ * Public helper routines
+ ******************************************************/
+
+//
+// Returns -1 if point1 < point2, 1, if point1 > point2,
+// 0 if error or if point1 == point2.
+//
+PRInt32 ComparePoints(nsIDOMNode* aParent1, PRInt32 aOffset1,
+                      nsIDOMNode* aParent2, PRInt32 aOffset2)
+{
+  if (aParent1 == aParent2 && aOffset1 == aOffset2)
+    return 0;
+  nsRange* range = new nsRange;
+  nsresult res = range->SetStart(aParent1, aOffset1);
+  if (!NS_SUCCEEDED(res))
+    return 0;
+  res = range->SetEnd(aParent2, aOffset2);
+  delete range;
+  if (NS_SUCCEEDED(res))
+    return -1;
+  else
+    return 1;
+}
+
 /******************************************************
  * Private helper routines
  ******************************************************/

layout/base/src/nsRange.h

@@ -0,0 +1,26 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * The contents of this file are subject to the Netscape Public License
+ * Version 1.0 (the "NPL"); you may not use this file except in
+ * compliance with the NPL.  You may obtain a copy of the NPL at
+ * http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the NPL is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
+ * for the specific language governing rights and limitations under the
+ * NPL.
+ *
+ * The Initial Developer of this code under the NPL is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
+ * Reserved.
+ */
+
+/*
+ * nsRange.h : Useful routines for users of nsRange objects.
+ * This doesn't include the definition of the nsRange class itself,
+ * since range users should always get their ranges via nsIDOMRange.
+ */
+
+PRInt32 ComparePoints(nsIDOMNode* aParent1, PRInt32 aOffset1,
+                      nsIDOMNode* aParent2, PRInt32 aOffset2);