Add SelectionMode enum for setRangeText() in HTMLInputElement and HTMLTextAreaElement

Source/core/html/HTMLTextFormControlElement.cpp

 /*
  * 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, 2005, 2006, 2007 Apple Inc. All rights reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  *
  * 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
@@ skipping 190 matching lines @@
     String newValue = value();
     if (shouldDispatchFormControlChangeEvent(m_textAsOfLastFormControlChangeEvent, newValue)) {
         setTextAsOfLastFormControlChangeEvent(newValue);
         dispatchChangeEvent();
     }
     setChangedSinceLastFormControlChangeEvent(false);
 }
 
 void HTMLTextFormControlElement::setRangeText(const String& replacement, ExceptionState& exceptionState)
 {
-    setRangeText(replacement, selectionStart(), selectionEnd(), String(), exceptionState);
+    setRangeText(replacement, selectionStart(), selectionEnd(), "preserve", exceptionState);
 }
 
 void HTMLTextFormControlElement::setRangeText(const String& replacement, unsigned start, unsigned end, const String& selectionMode, ExceptionState& exceptionState)
 {
     if (start > end) {
         exceptionState.throwDOMException(IndexSizeError, "The provided start value (" + String::number(start) + ") is larger than the provided end value (" + String::number(end) + ").");
         return;
     }
     if (hasOpenShadowRoot())
         return;
@@ skipping 13 matching lines @@
         text.insert(replacement, start);
 
     setInnerEditorValue(text);
 
     // FIXME: What should happen to the value (as in value()) if there's no layoutObject?
     if (!layoutObject())
         return;
 
     subtreeHasChanged();
 
-    if (equalIgnoringCase(selectionMode, "select")) {
+    if (selectionMode == "select") {
         newSelectionStart = start;
         newSelectionEnd = start + replacementLength;
-    } else if (equalIgnoringCase(selectionMode, "start")) {
+    } else if (selectionMode == "start") {
         newSelectionStart = newSelectionEnd = start;
-    } else if (equalIgnoringCase(selectionMode, "end")) {
+    } else if (selectionMode == "end") {
         newSelectionStart = newSelectionEnd = start + replacementLength;
     } else {
-        // Default is "preserve".
+        ASSERT(selectionMode == "preserve");
         long delta = replacementLength - (end - start);
 
         if (newSelectionStart > end)
             newSelectionStart += delta;
         else if (newSelectionStart > start)
             newSelectionStart = start;
 
         if (newSelectionEnd > end)
             newSelectionEnd += delta;
         else if (newSelectionEnd > start)
@@ skipping 745 matching lines @@
 }
 
 void HTMLTextFormControlElement::copyNonAttributePropertiesFromElement(const Element& source)
 {
     const HTMLTextFormControlElement& sourceElement = static_cast<const HTMLTextFormControlElement&>(source);
     m_lastChangeWasUserEdit = sourceElement.m_lastChangeWasUserEdit;
     HTMLFormControlElement::copyNonAttributePropertiesFromElement(source);
 }
 
 } // namespace blink