Implement HTMLElement directionality according to the spec

Source/core/html/HTMLElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004-2008, 2013, 2014 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2011 Motorola Mobility. All rights reserved.
  *
  * 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 32 matching lines @@
 #include "core/dom/shadow/ShadowRoot.h"
 #include "core/editing/markup.h"
 #include "core/events/EventListener.h"
 #include "core/events/KeyboardEvent.h"
 #include "core/frame/Settings.h"
 #include "core/html/HTMLBRElement.h"
 #include "core/html/HTMLFormElement.h"
 #include "core/html/HTMLInputElement.h"
 #include "core/html/HTMLMenuElement.h"
 #include "core/html/HTMLTemplateElement.h"
+#include "core/html/HTMLTextAreaElement.h"
 #include "core/html/HTMLTextFormControlElement.h"
 #include "core/html/parser/HTMLParserIdioms.h"
 #include "core/rendering/RenderObject.h"
 #include "platform/text/BidiResolver.h"
 #include "platform/text/BidiTextRun.h"
 #include "platform/text/TextRunIterator.h"
 #include "wtf/StdLibExtras.h"
 #include "wtf/text/CString.h"
 
 namespace blink {
@@ skipping 617 matching lines @@
     }
 
     isAuto = true;
     return directionality();
 }
 
 TextDirection HTMLElement::directionality(Node** strongDirectionalityTextNode) const
 {
     if (isHTMLInputElement(*this)) {
         HTMLInputElement* inputElement = toHTMLInputElement(const_cast<HTMLElement*>(this));
+        if (inputElement->isTextField() || inputElement->isSearchField()
+            || inputElement->isURLField() || inputElement->isEmailField()) {
+            bool hasStrongDirectionality;
+            TextDirection textDirection = determineDirectionality(inputElement->value(), hasStrongDirectionality);
+            if (strongDirectionalityTextNode)
+                *strongDirectionalityTextNode = hasStrongDirectionality ? inputElement : 0;
+            return textDirection;
+        }
+    } else if (isHTMLTextAreaElement(*this)) {
+        HTMLTextAreaElement* textAreaElement = toHTMLTextAreaElement(const_cast<HTMLElement*>(this));
         bool hasStrongDirectionality;
-        TextDirection textDirection = determineDirectionality(inputElement->value(), hasStrongDirectionality);
+        TextDirection textDirection = determineDirectionality(textAreaElement->value(), hasStrongDirectionality);
         if (strongDirectionalityTextNode)
-            *strongDirectionalityTextNode = hasStrongDirectionality ? inputElement : 0;
+            *strongDirectionalityTextNode = hasStrongDirectionality ? textAreaElement : 0;
         return textDirection;
     }
 
     Node* node = firstChild();
     while (node) {
         // Skip bdi, script, style and text form controls.
         if (equalIgnoringCase(node->nodeName(), "bdi") || isHTMLScriptElement(*node) || isHTMLStyleElement(*node)
             || (node->isElementNode() && toElement(node)->isTextFormControl())) {
             node = NodeTraversal::nextSkippingChildren(*node, this);
             continue;
@@ skipping 290 matching lines @@
 #ifndef NDEBUG
 
 // For use in the debugger
 void dumpInnerHTML(blink::HTMLElement*);
 
 void dumpInnerHTML(blink::HTMLElement* element)
 {
     printf("%s\n", element->innerHTML().ascii().data());
 }
 #endif