Merge WebKit at r75315: Initial merge by git.

Change-Id: I570314b346ce101c935ed22a626b48c2af266b84

1 files changed, 833 insertions, 0 deletions

diff --git a/Source/WebCore/html/HTMLElement.cpp b/Source/WebCore/html/HTMLElement.cpp
new file mode 100644
index 0000000..a504f75
--- /dev/null
+++ b/Source/WebCore/html/HTMLElement.cpp
@@ -0,0 +1,833 @@
+/*
+ * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
+ *           (C) 1999 Antti Koivisto (koivisto@kde.org)
+ * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
+ * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.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
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "config.h"
+#include "HTMLElement.h"
+
+#include "Attribute.h"
+#include "CSSPropertyNames.h"
+#include "CSSValueKeywords.h"
+#include "DocumentFragment.h"
+#include "Event.h"
+#include "EventListener.h"
+#include "EventNames.h"
+#include "ExceptionCode.h"
+#include "Frame.h"
+#include "HTMLBRElement.h"
+#include "HTMLCollection.h"
+#include "HTMLDocument.h"
+#include "HTMLElementFactory.h"
+#include "HTMLFormElement.h"
+#include "HTMLNames.h"
+#include "HTMLParserIdioms.h"
+#include "RenderWordBreak.h"
+#include "ScriptEventListener.h"
+#include "Settings.h"
+#include "Text.h"
+#include "TextIterator.h"
+#include "markup.h"
+#include <wtf/StdLibExtras.h>
+#include <wtf/text/CString.h>
+
+namespace WebCore {
+
+using namespace HTMLNames;
+
+using std::min;
+using std::max;
+
+PassRefPtr<HTMLElement> HTMLElement::create(const QualifiedName& tagName, Document* document)
+{
+    return adoptRef(new HTMLElement(tagName, document));
+}
+
+String HTMLElement::nodeName() const
+{
+    // FIXME: Would be nice to have an atomicstring lookup based off uppercase
+    // chars that does not have to copy the string on a hit in the hash.
+    // FIXME: We should have a way to detect XHTML elements and replace the hasPrefix() check with it.
+    if (document()->isHTMLDocument() && !tagQName().hasPrefix())
+        return tagQName().localNameUpper();
+    return Element::nodeName();
+}
+
+bool HTMLElement::ieForbidsInsertHTML() const
+{
+    // FIXME: Supposedly IE disallows settting innerHTML, outerHTML
+    // and createContextualFragment on these tags.  We have no tests to
+    // verify this however, so this list could be totally wrong.
+    // This list was moved from the previous endTagRequirement() implementation.
+    // This is also called from editing and assumed to be the list of tags
+    // for which no end tag should be serialized. It's unclear if the list for
+    // IE compat and the list for serialization sanity are the same.
+    if (hasLocalName(areaTag)
+        || hasLocalName(baseTag)
+        || hasLocalName(basefontTag)
+        || hasLocalName(brTag)
+        || hasLocalName(colTag)
+#if ENABLE(DATAGRID)
+        || hasLocalName(dcellTag)
+        || hasLocalName(dcolTag)
+#endif
+        || hasLocalName(embedTag)
+        || hasLocalName(frameTag)
+        || hasLocalName(hrTag)
+        || hasLocalName(imageTag)
+        || hasLocalName(imgTag)
+        || hasLocalName(inputTag)
+        || hasLocalName(isindexTag)
+        || hasLocalName(linkTag)
+        || hasLocalName(metaTag)
+        || hasLocalName(paramTag)
+        || hasLocalName(sourceTag)
+        || hasLocalName(wbrTag))
+        return true;
+    // FIXME: I'm not sure why dashboard mode would want to change the
+    // serialization of <canvas>, that seems like a bad idea.
+#if ENABLE(DASHBOARD_SUPPORT)
+    if (hasLocalName(canvasTag)) {
+        Settings* settings = document()->settings();
+        if (settings && settings->usesDashboardBackwardCompatibilityMode())
+            return true;
+    }
+#endif
+    return false;
+}
+
+bool HTMLElement::mapToEntry(const QualifiedName& attrName, MappedAttributeEntry& result) const
+{
+    if (attrName == alignAttr
+        || attrName == contenteditableAttr
+        || attrName == hiddenAttr) {
+        result = eUniversal;
+        return false;
+    }
+    if (attrName == dirAttr) {
+        result = hasLocalName(bdoTag) ? eBDO : eUniversal;
+        return false;
+    }
+
+    return StyledElement::mapToEntry(attrName, result);
+}
+    
+void HTMLElement::parseMappedAttribute(Attribute* attr)
+{
+    if (isIdAttributeName(attr->name()) || attr->name() == classAttr || attr->name() == styleAttr)
+        return StyledElement::parseMappedAttribute(attr);
+
+    String indexstring;
+    if (attr->name() == alignAttr) {
+        if (equalIgnoringCase(attr->value(), "middle"))
+            addCSSProperty(attr, CSSPropertyTextAlign, "center");
+        else
+            addCSSProperty(attr, CSSPropertyTextAlign, attr->value());
+    } else if (attr->name() == contenteditableAttr) {
+        setContentEditable(attr);
+    } else if (attr->name() == hiddenAttr) {
+        addCSSProperty(attr, CSSPropertyDisplay, CSSValueNone);
+    } else if (attr->name() == tabindexAttr) {
+        indexstring = getAttribute(tabindexAttr);
+        int tabindex = 0;
+        if (parseHTMLInteger(indexstring, tabindex)) {
+            // Clamp tabindex to the range of 'short' to match Firefox's behavior.
+            setTabIndexExplicitly(max(static_cast<int>(std::numeric_limits<short>::min()), min(tabindex, static_cast<int>(std::numeric_limits<short>::max()))));
+        }
+    } else if (attr->name() == langAttr) {
+        // FIXME: Implement
+    } else if (attr->name() == dirAttr) {
+        addCSSProperty(attr, CSSPropertyDirection, attr->value());
+        addCSSProperty(attr, CSSPropertyUnicodeBidi, hasLocalName(bdoTag) ? CSSValueBidiOverride : CSSValueEmbed);
+    } else if (attr->name() == draggableAttr) {
+        const AtomicString& value = attr->value();
+        if (equalIgnoringCase(value, "true")) {
+            addCSSProperty(attr, CSSPropertyWebkitUserDrag, CSSValueElement);
+            addCSSProperty(attr, CSSPropertyWebkitUserSelect, CSSValueNone);
+        } else if (equalIgnoringCase(value, "false"))
+            addCSSProperty(attr, CSSPropertyWebkitUserDrag, CSSValueNone);
+    }
+// standard events
+    else if (attr->name() == onclickAttr) {
+        setAttributeEventListener(eventNames().clickEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == oncontextmenuAttr) {
+        setAttributeEventListener(eventNames().contextmenuEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == ondblclickAttr) {
+        setAttributeEventListener(eventNames().dblclickEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == onmousedownAttr) {
+        setAttributeEventListener(eventNames().mousedownEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == onmousemoveAttr) {
+        setAttributeEventListener(eventNames().mousemoveEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == onmouseoutAttr) {
+        setAttributeEventListener(eventNames().mouseoutEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == onmouseoverAttr) {
+        setAttributeEventListener(eventNames().mouseoverEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == onmouseupAttr) {
+        setAttributeEventListener(eventNames().mouseupEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == onmousewheelAttr) {
+        setAttributeEventListener(eventNames().mousewheelEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == onfocusAttr) {
+        setAttributeEventListener(eventNames().focusEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == onfocusinAttr) {
+        setAttributeEventListener(eventNames().focusinEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == onfocusoutAttr) {
+        setAttributeEventListener(eventNames().focusoutEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == onblurAttr) {
+        setAttributeEventListener(eventNames().blurEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == onkeydownAttr) {
+        setAttributeEventListener(eventNames().keydownEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == onkeypressAttr) {
+        setAttributeEventListener(eventNames().keypressEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == onkeyupAttr) {
+        setAttributeEventListener(eventNames().keyupEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == onscrollAttr) {
+        setAttributeEventListener(eventNames().scrollEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == onbeforecutAttr) {
+        setAttributeEventListener(eventNames().beforecutEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == oncutAttr) {
+        setAttributeEventListener(eventNames().cutEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == onbeforecopyAttr) {
+        setAttributeEventListener(eventNames().beforecopyEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == oncopyAttr) {
+        setAttributeEventListener(eventNames().copyEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == onbeforepasteAttr) {
+        setAttributeEventListener(eventNames().beforepasteEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == onpasteAttr) {
+        setAttributeEventListener(eventNames().pasteEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == ondragenterAttr) {
+        setAttributeEventListener(eventNames().dragenterEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == ondragoverAttr) {
+        setAttributeEventListener(eventNames().dragoverEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == ondragleaveAttr) {
+        setAttributeEventListener(eventNames().dragleaveEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == ondropAttr) {
+        setAttributeEventListener(eventNames().dropEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == ondragstartAttr) {
+        setAttributeEventListener(eventNames().dragstartEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == ondragAttr) {
+        setAttributeEventListener(eventNames().dragEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == ondragendAttr) {
+        setAttributeEventListener(eventNames().dragendEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == onselectstartAttr) {
+        setAttributeEventListener(eventNames().selectstartEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == onsubmitAttr) {
+        setAttributeEventListener(eventNames().submitEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == onerrorAttr) {
+        setAttributeEventListener(eventNames().errorEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == onwebkitanimationstartAttr) {
+        setAttributeEventListener(eventNames().webkitAnimationStartEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == onwebkitanimationiterationAttr) {
+        setAttributeEventListener(eventNames().webkitAnimationIterationEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == onwebkitanimationendAttr) {
+        setAttributeEventListener(eventNames().webkitAnimationEndEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == onwebkittransitionendAttr) {
+        setAttributeEventListener(eventNames().webkitTransitionEndEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == oninputAttr) {
+        setAttributeEventListener(eventNames().inputEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == oninvalidAttr) {
+        setAttributeEventListener(eventNames().invalidEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == ontouchstartAttr) {
+        setAttributeEventListener(eventNames().touchstartEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == ontouchmoveAttr) {
+        setAttributeEventListener(eventNames().touchmoveEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == ontouchendAttr) {
+        setAttributeEventListener(eventNames().touchendEvent, createAttributeEventListener(this, attr));
+    } else if (attr->name() == ontouchcancelAttr) {
+        setAttributeEventListener(eventNames().touchcancelEvent, createAttributeEventListener(this, attr));
+#if ENABLE(FULLSCREEN_API)
+    } else if (attr->name() == onwebkitfullscreenchangeAttr) {
+        setAttributeEventListener(eventNames().webkitfullscreenchangeEvent, createAttributeEventListener(this, attr));
+#endif
+    }
+}
+
+String HTMLElement::innerHTML() const
+{
+    return createMarkup(this, ChildrenOnly);
+}
+
+String HTMLElement::outerHTML() const
+{
+    return createMarkup(this);
+}
+
+// FIXME: This logic should move into Range::createContextualFragment
+PassRefPtr<DocumentFragment> HTMLElement::deprecatedCreateContextualFragment(const String& markup, FragmentScriptingPermission scriptingPermission)
+{
+    // The following is in accordance with the definition as used by IE.
+    if (ieForbidsInsertHTML())
+        return 0;
+
+    if (hasLocalName(colTag) || hasLocalName(colgroupTag) || hasLocalName(framesetTag)
+        || hasLocalName(headTag) || hasLocalName(styleTag) || hasLocalName(titleTag))
+        return 0;
+
+    return Element::deprecatedCreateContextualFragment(markup, scriptingPermission);
+}
+
+static inline bool hasOneChild(ContainerNode* node)
+{
+    Node* firstChild = node->firstChild();
+    return firstChild && !firstChild->nextSibling();
+}
+
+static inline bool hasOneTextChild(ContainerNode* node)
+{
+    return hasOneChild(node) && node->firstChild()->isTextNode();
+}
+
+static void replaceChildrenWithFragment(HTMLElement* element, PassRefPtr<DocumentFragment> fragment, ExceptionCode& ec)
+{
+    if (!fragment->firstChild()) {
+        element->removeChildren();
+        return;
+    }
+
+    if (hasOneTextChild(element) && hasOneTextChild(fragment.get())) {
+        static_cast<Text*>(element->firstChild())->setData(static_cast<Text*>(fragment->firstChild())->data(), ec);
+        return;
+    }
+
+    if (hasOneChild(element)) {
+        element->replaceChild(fragment, element->firstChild(), ec);
+        return;
+    }
+
+    element->removeChildren();
+    element->appendChild(fragment, ec);
+}
+
+static void replaceChildrenWithText(HTMLElement* element, const String& text, ExceptionCode& ec)
+{
+    if (hasOneTextChild(element)) {
+        static_cast<Text*>(element->firstChild())->setData(text, ec);
+        return;
+    }
+
+    RefPtr<Text> textNode = Text::create(element->document(), text);
+
+    if (hasOneChild(element)) {
+        element->replaceChild(textNode.release(), element->firstChild(), ec);
+        return;
+    }
+
+    element->removeChildren();
+    element->appendChild(textNode.release(), ec);
+}
+
+// We may want to move a version of this function into DocumentFragment.h/cpp
+static PassRefPtr<DocumentFragment> createFragmentFromSource(const String& markup, Element* contextElement, ExceptionCode& ec)
+{
+    Document* document = contextElement->document();
+    RefPtr<DocumentFragment> fragment;
+
+    fragment = DocumentFragment::create(document);
+    if (document->isHTMLDocument()) {
+        fragment->parseHTML(markup, contextElement);
+        return fragment;
+    }
+
+    bool wasValid = fragment->parseXML(markup, contextElement);
+    if (!wasValid) {
+        ec = INVALID_STATE_ERR;
+        return 0;
+    }
+    return fragment;
+}
+
+void HTMLElement::setInnerHTML(const String& html, ExceptionCode& ec)
+{
+    RefPtr<DocumentFragment> fragment = createFragmentFromSource(html, this, ec);
+    if (fragment)
+        replaceChildrenWithFragment(this, fragment.release(), ec);
+}
+
+void HTMLElement::setOuterHTML(const String& html, ExceptionCode& ec)
+{
+    Node* p = parentNode();
+    if (!p || !p->isHTMLElement()) {
+        ec = NO_MODIFICATION_ALLOWED_ERR;
+        return;
+    }
+    HTMLElement* parent = static_cast<HTMLElement*>(p);
+
+    RefPtr<DocumentFragment> fragment = createFragmentFromSource(html, parent, ec);
+    if (fragment) {
+        // FIXME: Why doesn't this have code to merge neighboring text nodes the way setOuterText does?
+        parent->replaceChild(fragment.release(), this, ec);
+    }
+}
+
+void HTMLElement::setInnerText(const String& text, ExceptionCode& ec)
+{
+    if (ieForbidsInsertHTML()) {
+        ec = NO_MODIFICATION_ALLOWED_ERR;
+        return;
+    }
+    if (hasLocalName(colTag) || hasLocalName(colgroupTag) || hasLocalName(framesetTag) ||
+        hasLocalName(headTag) || hasLocalName(htmlTag) || hasLocalName(tableTag) || 
+        hasLocalName(tbodyTag) || hasLocalName(tfootTag) || hasLocalName(theadTag) ||
+        hasLocalName(trTag)) {
+        ec = NO_MODIFICATION_ALLOWED_ERR;
+        return;
+    }
+
+    // FIXME: This doesn't take whitespace collapsing into account at all.
+
+    if (!text.contains('\n') && !text.contains('\r')) {
+        if (text.isEmpty()) {
+            removeChildren();
+            return;
+        }
+        replaceChildrenWithText(this, text, ec);
+        return;
+    }
+
+    // FIXME: Do we need to be able to detect preserveNewline style even when there's no renderer?
+    // FIXME: Can the renderer be out of date here? Do we need to call updateStyleIfNeeded?
+    // For example, for the contents of textarea elements that are display:none?
+    RenderObject* r = renderer();
+    if (r && r->style()->preserveNewline()) {
+        if (!text.contains('\r')) {
+            replaceChildrenWithText(this, text, ec);
+            return;
+        }
+        String textWithConsistentLineBreaks = text;
+        textWithConsistentLineBreaks.replace("\r\n", "\n");
+        textWithConsistentLineBreaks.replace('\r', '\n');
+        replaceChildrenWithText(this, textWithConsistentLineBreaks, ec);
+        return;
+    }
+
+    // Add text nodes and <br> elements.
+    ec = 0;
+    RefPtr<DocumentFragment> fragment = DocumentFragment::create(document());
+    int lineStart = 0;
+    UChar prev = 0;
+    int length = text.length();
+    for (int i = 0; i < length; ++i) {
+        UChar c = text[i];
+        if (c == '\n' || c == '\r') {
+            if (i > lineStart) {
+                fragment->appendChild(Text::create(document(), text.substring(lineStart, i - lineStart)), ec);
+                if (ec)
+                    return;
+            }
+            if (!(c == '\n' && i != 0 && prev == '\r')) {
+                fragment->appendChild(HTMLBRElement::create(document()), ec);
+                if (ec)
+                    return;
+            }
+            lineStart = i + 1;
+        }
+        prev = c;
+    }
+    if (length > lineStart)
+        fragment->appendChild(Text::create(document(), text.substring(lineStart, length - lineStart)), ec);
+    replaceChildrenWithFragment(this, fragment.release(), ec);
+}
+
+void HTMLElement::setOuterText(const String &text, ExceptionCode& ec)
+{
+    if (ieForbidsInsertHTML()) {
+        ec = NO_MODIFICATION_ALLOWED_ERR;
+        return;
+    }
+    if (hasLocalName(colTag) || hasLocalName(colgroupTag) || hasLocalName(framesetTag) ||
+        hasLocalName(headTag) || hasLocalName(htmlTag) || hasLocalName(tableTag) || 
+        hasLocalName(tbodyTag) || hasLocalName(tfootTag) || hasLocalName(theadTag) ||
+        hasLocalName(trTag)) {
+        ec = NO_MODIFICATION_ALLOWED_ERR;
+        return;
+    }
+
+    ContainerNode* parent = parentNode();
+    if (!parent) {
+        ec = NO_MODIFICATION_ALLOWED_ERR;
+        return;
+    }
+
+    // FIXME: This creates a new text node even when the text is empty.
+    // FIXME: This creates a single text node even when the text has CR and LF
+    // characters in it. Instead it should create <br> elements.
+    RefPtr<Text> t = Text::create(document(), text);
+    ec = 0;
+    parent->replaceChild(t, this, ec);
+    if (ec)
+        return;
+
+    // Is previous node a text node? If so, merge into it.
+    Node* prev = t->previousSibling();
+    if (prev && prev->isTextNode()) {
+        Text* textPrev = static_cast<Text*>(prev);
+        textPrev->appendData(t->data(), ec);
+        if (ec)
+            return;
+        t->remove(ec);
+        if (ec)
+            return;
+        t = textPrev;
+    }
+
+    // Is next node a text node? If so, merge it in.
+    Node* next = t->nextSibling();
+    if (next && next->isTextNode()) {
+        Text* textNext = static_cast<Text*>(next);
+        t->appendData(textNext->data(), ec);
+        if (ec)
+            return;
+        textNext->remove(ec);
+        if (ec)
+            return;
+    }
+}
+
+Node* HTMLElement::insertAdjacent(const String& where, Node* newChild, ExceptionCode& ec)
+{
+    // In Internet Explorer if the element has no parent and where is "beforeBegin" or "afterEnd",
+    // a document fragment is created and the elements appended in the correct order. This document
+    // fragment isn't returned anywhere.
+    //
+    // This is impossible for us to implement as the DOM tree does not allow for such structures,
+    // Opera also appears to disallow such usage.
+
+    if (equalIgnoringCase(where, "beforeBegin")) {
+        ContainerNode* parent = this->parentNode();
+        return (parent && parent->insertBefore(newChild, this, ec)) ? newChild : 0;
+    }
+
+    if (equalIgnoringCase(where, "afterBegin"))
+        return insertBefore(newChild, firstChild(), ec) ? newChild : 0;
+
+    if (equalIgnoringCase(where, "beforeEnd"))
+        return appendChild(newChild, ec) ? newChild : 0;
+
+    if (equalIgnoringCase(where, "afterEnd")) {
+        ContainerNode* parent = this->parentNode();
+        return (parent && parent->insertBefore(newChild, nextSibling(), ec)) ? newChild : 0;
+    }
+    
+    // IE throws COM Exception E_INVALIDARG; this is the best DOM exception alternative.
+    ec = NOT_SUPPORTED_ERR;
+    return 0;
+}
+
+Element* HTMLElement::insertAdjacentElement(const String& where, Element* newChild, ExceptionCode& ec)
+{
+    if (!newChild) {
+        // IE throws COM Exception E_INVALIDARG; this is the best DOM exception alternative.
+        ec = TYPE_MISMATCH_ERR;
+        return 0;
+    }
+
+    Node* returnValue = insertAdjacent(where, newChild, ec);
+    ASSERT(!returnValue || returnValue->isElementNode());
+    return static_cast<Element*>(returnValue); 
+}
+
+// Step 3 of http://www.whatwg.org/specs/web-apps/current-work/multipage/apis-in-html-documents.html#insertadjacenthtml()
+static Element* contextElementForInsertion(const String& where, Element* element, ExceptionCode& ec)
+{
+    if (equalIgnoringCase(where, "beforeBegin") || equalIgnoringCase(where, "afterEnd")) {
+        ContainerNode* parent = element->parentNode();
+        if (parent && parent->isDocumentNode()) {
+            ec = NO_MODIFICATION_ALLOWED_ERR;
+            return 0;
+        }
+        ASSERT(!parent || parent->isElementNode());
+        return static_cast<Element*>(parent);
+    }
+    if (equalIgnoringCase(where, "afterBegin") || equalIgnoringCase(where, "beforeEnd"))
+        return element;
+    ec =  SYNTAX_ERR;
+    return 0;
+}
+
+void HTMLElement::insertAdjacentHTML(const String& where, const String& markup, ExceptionCode& ec)
+{
+    RefPtr<DocumentFragment> fragment = document()->createDocumentFragment();
+    Element* contextElement = contextElementForInsertion(where, this, ec);
+    if (!contextElement)
+        return;
+
+    if (document()->isHTMLDocument())
+         fragment->parseHTML(markup, contextElement);
+    else {
+        if (!fragment->parseXML(markup, contextElement))
+            // FIXME: We should propagate a syntax error exception out here.
+            return;
+    }
+
+    insertAdjacent(where, fragment.get(), ec);
+}
+
+void HTMLElement::insertAdjacentText(const String& where, const String& text, ExceptionCode& ec)
+{
+    RefPtr<Text> textNode = document()->createTextNode(text);
+    insertAdjacent(where, textNode.get(), ec);
+}
+
+void HTMLElement::addHTMLAlignment(Attribute* attr)
+{
+    addHTMLAlignmentToStyledElement(this, attr);
+}
+
+void HTMLElement::addHTMLAlignmentToStyledElement(StyledElement* element, Attribute* attr)
+{
+    // Vertical alignment with respect to the current baseline of the text
+    // right or left means floating images.
+    int floatValue = CSSValueInvalid;
+    int verticalAlignValue = CSSValueInvalid;
+
+    const AtomicString& alignment = attr->value();
+    if (equalIgnoringCase(alignment, "absmiddle"))
+        verticalAlignValue = CSSValueMiddle;
+    else if (equalIgnoringCase(alignment, "absbottom"))
+        verticalAlignValue = CSSValueBottom;
+    else if (equalIgnoringCase(alignment, "left")) {
+        floatValue = CSSValueLeft;
+        verticalAlignValue = CSSValueTop;
+    } else if (equalIgnoringCase(alignment, "right")) {
+        floatValue = CSSValueRight;
+        verticalAlignValue = CSSValueTop;
+    } else if (equalIgnoringCase(alignment, "top"))
+        verticalAlignValue = CSSValueTop;
+    else if (equalIgnoringCase(alignment, "middle"))
+        verticalAlignValue = CSSValueWebkitBaselineMiddle;
+    else if (equalIgnoringCase(alignment, "center"))
+        verticalAlignValue = CSSValueMiddle;
+    else if (equalIgnoringCase(alignment, "bottom"))
+        verticalAlignValue = CSSValueBaseline;
+    else if (equalIgnoringCase(alignment, "texttop"))
+        verticalAlignValue = CSSValueTextTop;
+
+    if (floatValue != CSSValueInvalid)
+        element->addCSSProperty(attr, CSSPropertyFloat, floatValue);
+
+    if (verticalAlignValue != CSSValueInvalid)
+        element->addCSSProperty(attr, CSSPropertyVerticalAlign, verticalAlignValue);
+}
+
+bool HTMLElement::supportsFocus() const
+{
+    return Element::supportsFocus() || (isContentEditable() && parentNode() && !parentNode()->isContentEditable());
+}
+
+bool HTMLElement::isContentEditable() const 
+{
+    if (document()->frame() && document()->frame()->isContentEditable())
+        return true;
+
+    // Ideally we'd call ASSERT!needsStyleRecalc()) here, but
+    // ContainerNode::setFocus() calls setNeedsStyleRecalc(), so the assertion
+    // would fire in the middle of Document::setFocusedNode().
+
+    if (!renderer()) {
+        if (parentNode())
+            return parentNode()->isContentEditable();
+        else
+            return false;
+    }
+    
+    return renderer()->style()->userModify() == READ_WRITE || renderer()->style()->userModify() == READ_WRITE_PLAINTEXT_ONLY;
+}
+
+bool HTMLElement::isContentRichlyEditable() const
+{
+    if (document()->frame() && document()->frame()->isContentEditable())
+        return true;
+
+    if (!renderer()) {
+        if (parentNode())
+            return parentNode()->isContentEditable();
+        else
+            return false;
+    }
+    
+    return renderer()->style()->userModify() == READ_WRITE;
+}
+
+String HTMLElement::contentEditable() const 
+{
+    if (!renderer())
+        return "false";
+    
+    switch (renderer()->style()->userModify()) {
+        case READ_WRITE:
+            return "true";
+        case READ_ONLY:
+            return "false";
+        case READ_WRITE_PLAINTEXT_ONLY:
+            return "plaintext-only";
+        default:
+            return "inherit";
+    }
+}
+
+void HTMLElement::setContentEditable(Attribute* attr) 
+{
+    const AtomicString& enabled = attr->value();
+    if (enabled.isEmpty() || equalIgnoringCase(enabled, "true")) {
+        addCSSProperty(attr, CSSPropertyWebkitUserModify, CSSValueReadWrite);
+        addCSSProperty(attr, CSSPropertyWordWrap, CSSValueBreakWord);
+        addCSSProperty(attr, CSSPropertyWebkitNbspMode, CSSValueSpace);
+        addCSSProperty(attr, CSSPropertyWebkitLineBreak, CSSValueAfterWhiteSpace);
+    } else if (equalIgnoringCase(enabled, "false")) {
+        addCSSProperty(attr, CSSPropertyWebkitUserModify, CSSValueReadOnly);
+        attr->decl()->removeProperty(CSSPropertyWordWrap, false);
+        attr->decl()->removeProperty(CSSPropertyWebkitNbspMode, false);
+        attr->decl()->removeProperty(CSSPropertyWebkitLineBreak, false);
+    } else if (equalIgnoringCase(enabled, "inherit")) {
+        addCSSProperty(attr, CSSPropertyWebkitUserModify, CSSValueInherit);
+        attr->decl()->removeProperty(CSSPropertyWordWrap, false);
+        attr->decl()->removeProperty(CSSPropertyWebkitNbspMode, false);
+        attr->decl()->removeProperty(CSSPropertyWebkitLineBreak, false);
+    } else if (equalIgnoringCase(enabled, "plaintext-only")) {
+        addCSSProperty(attr, CSSPropertyWebkitUserModify, CSSValueReadWritePlaintextOnly);
+        addCSSProperty(attr, CSSPropertyWordWrap, CSSValueBreakWord);
+        addCSSProperty(attr, CSSPropertyWebkitNbspMode, CSSValueSpace);
+        addCSSProperty(attr, CSSPropertyWebkitLineBreak, CSSValueAfterWhiteSpace);
+    }
+}
+
+void HTMLElement::setContentEditable(const String &enabled)
+{
+    if (enabled == "inherit") {
+        ExceptionCode ec;
+        removeAttribute(contenteditableAttr, ec);
+    }
+    else
+        setAttribute(contenteditableAttr, enabled.isEmpty() ? "true" : enabled);
+}
+
+bool HTMLElement::draggable() const
+{
+    return equalIgnoringCase(getAttribute(draggableAttr), "true");
+}
+
+void HTMLElement::setDraggable(bool value)
+{
+    setAttribute(draggableAttr, value ? "true" : "false");
+}
+
+bool HTMLElement::spellcheck() const
+{
+    return isSpellCheckingEnabled();
+}
+
+void HTMLElement::setSpellcheck(bool enable)
+{
+    setAttribute(spellcheckAttr, enable ? "true" : "false");
+}
+
+
+void HTMLElement::click()
+{
+    dispatchSimulatedClick(0, false, false);
+}
+
+// accessKeyAction is used by the accessibility support code
+// to send events to elements that our JavaScript caller does
+// does not.  The elements JS is interested in have subclasses
+// that override this method to direct the click appropriately.
+// Here in the base class, then, we only send the click if
+// the caller wants it to go to any HTMLElement, and we say
+// to send the mouse events in addition to the click.
+void HTMLElement::accessKeyAction(bool sendToAnyElement)
+{
+    if (sendToAnyElement)
+        dispatchSimulatedClick(0, true);
+}
+
+String HTMLElement::title() const
+{
+    return getAttribute(titleAttr);
+}
+
+short HTMLElement::tabIndex() const
+{
+    if (supportsFocus())
+        return Element::tabIndex();
+    return -1;
+}
+
+void HTMLElement::setTabIndex(int value)
+{
+    setAttribute(tabindexAttr, String::number(value));
+}
+
+PassRefPtr<HTMLCollection> HTMLElement::children()
+{
+    return HTMLCollection::create(this, NodeChildren);
+}
+
+bool HTMLElement::rendererIsNeeded(RenderStyle *style)
+{
+    if (hasLocalName(noscriptTag)) {
+        Frame* frame = document()->frame();
+#if ENABLE(XHTMLMP)
+        if (!document()->shouldProcessNoscriptElement())
+            return false;
+#else
+        if (frame && frame->script()->canExecuteScripts(NotAboutToExecuteScript))
+            return false;
+#endif        
+    } else if (hasLocalName(noembedTag)) {
+        Frame* frame = document()->frame();
+        if (frame && frame->loader()->subframeLoader()->allowPlugins(NotAboutToInstantiatePlugin))
+            return false;
+    }
+    return StyledElement::rendererIsNeeded(style);
+}
+
+RenderObject* HTMLElement::createRenderer(RenderArena* arena, RenderStyle* style)
+{
+    if (hasLocalName(wbrTag))
+        return new (arena) RenderWordBreak(this);
+    return RenderObject::createObject(this, style);
+}
+
+HTMLFormElement* HTMLElement::findFormAncestor() const
+{
+    for (ContainerNode* ancestor = parentNode(); ancestor; ancestor = ancestor->parentNode()) {
+        if (ancestor->hasTagName(formTag))
+            return static_cast<HTMLFormElement*>(ancestor);
+    }
+    return 0;
+}
+
+HTMLFormElement* HTMLElement::virtualForm() const
+{
+    return findFormAncestor();
+}
+
+} // namespace WebCore
+
+#ifndef NDEBUG
+
+// For use in the debugger
+void dumpInnerHTML(WebCore::HTMLElement*);
+
+void dumpInnerHTML(WebCore::HTMLElement* element)
+{
+    printf("%s\n", element->innerHTML().ascii().data());
+}
+#endif