Source/WebCore/html/HTMLBodyElement.cpp - platform/external/webkit - Git at Google

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Simon Hausmann (hausmann@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2006, 2007, 2008, 2009, 2010 Apple Inc. 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
  * 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 "HTMLBodyElement.h"

 #include "Attribute.h"
 #include "CSSStyleSelector.h"
 #include "CSSStyleSheet.h"
 #include "CSSValueKeywords.h"
 #include "EventNames.h"
 #include "Frame.h"
 #include "FrameView.h"
 #include "HTMLFrameElementBase.h"
 #include "HTMLNames.h"
 #include "HTMLParserIdioms.h"
 #include "ScriptEventListener.h"

 namespace WebCore {

 using namespace HTMLNames;

 HTMLBodyElement::HTMLBodyElement(const QualifiedName& tagName, Document* document)
     : HTMLElement(tagName, document)
 {
     ASSERT(hasTagName(bodyTag));
 }

 PassRefPtr<HTMLBodyElement> HTMLBodyElement::create(Document* document)
 {
     return adoptRef(new HTMLBodyElement(bodyTag, document));
 }

 PassRefPtr<HTMLBodyElement> HTMLBodyElement::create(const QualifiedName& tagName, Document* document)
 {
     return adoptRef(new HTMLBodyElement(tagName, document));
 }

 HTMLBodyElement::~HTMLBodyElement()
 {
     if (m_linkDecl) {
         m_linkDecl->setNode(0);
         m_linkDecl->setParent(0);
     }
 }

 void HTMLBodyElement::createLinkDecl()
 {
     m_linkDecl = CSSMutableStyleDeclaration::create();
     m_linkDecl->setParent(document()->elementSheet());
     m_linkDecl->setNode(this);
     m_linkDecl->setStrictParsing(!document()->inQuirksMode());
 }

 bool HTMLBodyElement::mapToEntry(const QualifiedName& attrName, MappedAttributeEntry& result) const
 {
     if (attrName == backgroundAttr) {
         result = (MappedAttributeEntry)(eLastEntry + document()->docID());
         return false;
     }

     if (attrName == bgcolorAttr ||
         attrName == textAttr ||
         attrName == marginwidthAttr ||
         attrName == leftmarginAttr ||
         attrName == marginheightAttr ||
         attrName == topmarginAttr ||
         attrName == bgpropertiesAttr) {
         result = eUniversal;
         return false;
     }

     return HTMLElement::mapToEntry(attrName, result);
 }

 void HTMLBodyElement::parseMappedAttribute(Attribute* attr)
 {
     if (attr->name() == backgroundAttr) {
         String url = stripLeadingAndTrailingHTMLSpaces(attr->value());
         if (!url.isEmpty())
             addCSSImageProperty(attr, CSSPropertyBackgroundImage, document()->completeURL(url).string());
     } else if (attr->name() == marginwidthAttr || attr->name() == leftmarginAttr) {
         addCSSLength(attr, CSSPropertyMarginRight, attr->value());
         addCSSLength(attr, CSSPropertyMarginLeft, attr->value());
     } else if (attr->name() == marginheightAttr || attr->name() == topmarginAttr) {
         addCSSLength(attr, CSSPropertyMarginBottom, attr->value());
         addCSSLength(attr, CSSPropertyMarginTop, attr->value());
     } else if (attr->name() == bgcolorAttr) {
         addCSSColor(attr, CSSPropertyBackgroundColor, attr->value());
     } else if (attr->name() == textAttr) {
         addCSSColor(attr, CSSPropertyColor, attr->value());
     } else if (attr->name() == bgpropertiesAttr) {
         if (equalIgnoringCase(attr->value(), "fixed"))
             addCSSProperty(attr, CSSPropertyBackgroundAttachment, CSSValueFixed);
     } else if (attr->name() == vlinkAttr ||
                attr->name() == alinkAttr ||
                attr->name() == linkAttr) {
         if (attr->isNull()) {
             if (attr->name() == linkAttr)
                 document()->resetLinkColor();
             else if (attr->name() == vlinkAttr)
                 document()->resetVisitedLinkColor();
             else
                 document()->resetActiveLinkColor();
         } else {
             if (!m_linkDecl)
                 createLinkDecl();
             m_linkDecl->setProperty(CSSPropertyColor, attr->value(), false, false);
             RefPtr<CSSValue> val = m_linkDecl->getPropertyCSSValue(CSSPropertyColor);
             if (val && val->isPrimitiveValue()) {
                 Color col = document()->styleSelector()->getColorFromPrimitiveValue(static_cast<CSSPrimitiveValue*>(val.get()));
                 if (attr->name() == linkAttr)
                     document()->setLinkColor(col);
                 else if (attr->name() == vlinkAttr)
                     document()->setVisitedLinkColor(col);
                 else
                     document()->setActiveLinkColor(col);
             }
         }

         if (attached())
             document()->recalcStyle(Force);
     } else if (attr->name() == onloadAttr)
         document()->setWindowAttributeEventListener(eventNames().loadEvent, createAttributeEventListener(document()->frame(), attr));
     else if (attr->name() == onbeforeunloadAttr)
         document()->setWindowAttributeEventListener(eventNames().beforeunloadEvent, createAttributeEventListener(document()->frame(), attr));
     else if (attr->name() == onunloadAttr)
         document()->setWindowAttributeEventListener(eventNames().unloadEvent, createAttributeEventListener(document()->frame(), attr));
     else if (attr->name() == onpagehideAttr)
         document()->setWindowAttributeEventListener(eventNames().pagehideEvent, createAttributeEventListener(document()->frame(), attr));
     else if (attr->name() == onpageshowAttr)
         document()->setWindowAttributeEventListener(eventNames().pageshowEvent, createAttributeEventListener(document()->frame(), attr));
     else if (attr->name() == onpopstateAttr)
         document()->setWindowAttributeEventListener(eventNames().popstateEvent, createAttributeEventListener(document()->frame(), attr));
     else if (attr->name() == onblurAttr)
         document()->setWindowAttributeEventListener(eventNames().blurEvent, createAttributeEventListener(document()->frame(), attr));
     else if (attr->name() == onfocusAttr)
         document()->setWindowAttributeEventListener(eventNames().focusEvent, createAttributeEventListener(document()->frame(), attr));
 #if ENABLE(ORIENTATION_EVENTS)
     else if (attr->name() == onorientationchangeAttr)
         document()->setWindowAttributeEventListener(eventNames().orientationchangeEvent, createAttributeEventListener(document()->frame(), attr));
 #endif
     else if (attr->name() == onhashchangeAttr)
         document()->setWindowAttributeEventListener(eventNames().hashchangeEvent, createAttributeEventListener(document()->frame(), attr));
     else if (attr->name() == onresizeAttr)
         document()->setWindowAttributeEventListener(eventNames().resizeEvent, createAttributeEventListener(document()->frame(), attr));
     else if (attr->name() == onscrollAttr)
         document()->setWindowAttributeEventListener(eventNames().scrollEvent, createAttributeEventListener(document()->frame(), attr));
     else if (attr->name() == onselectionchangeAttr)
         document()->setAttributeEventListener(eventNames().selectionchangeEvent, createAttributeEventListener(document()->frame(), attr));
     else if (attr->name() == onstorageAttr)
         document()->setWindowAttributeEventListener(eventNames().storageEvent, createAttributeEventListener(document()->frame(), attr));
     else if (attr->name() == ononlineAttr)
         document()->setWindowAttributeEventListener(eventNames().onlineEvent, createAttributeEventListener(document()->frame(), attr));
     else if (attr->name() == onofflineAttr)
         document()->setWindowAttributeEventListener(eventNames().offlineEvent, createAttributeEventListener(document()->frame(), attr));
     else
         HTMLElement::parseMappedAttribute(attr);
 }

 void HTMLBodyElement::insertedIntoDocument()
 {
     HTMLElement::insertedIntoDocument();

     // FIXME: Perhaps this code should be in attach() instead of here.
     Element* ownerElement = document()->ownerElement();
     if (ownerElement && (ownerElement->hasTagName(frameTag) || ownerElement->hasTagName(iframeTag))) {
         HTMLFrameElementBase* ownerFrameElement = static_cast<HTMLFrameElementBase*>(ownerElement);
         int marginWidth = ownerFrameElement->marginWidth();
         if (marginWidth != -1)
             setAttribute(marginwidthAttr, String::number(marginWidth));
         int marginHeight = ownerFrameElement->marginHeight();
         if (marginHeight != -1)
             setAttribute(marginheightAttr, String::number(marginHeight));
     }

     // FIXME: This call to scheduleRelayout should not be needed here.
     // But without it we hang during WebKit tests; need to fix that and remove this.
     if (FrameView* view = document()->view())
         view->scheduleRelayout();

     if (document() && document()->page())
         document()->page()->updateViewportArguments();
 }

 bool HTMLBodyElement::isURLAttribute(Attribute *attr) const
 {
     return attr->name() == backgroundAttr;
 }

 bool HTMLBodyElement::supportsFocus() const
 {
     return rendererIsEditable() || HTMLElement::supportsFocus();
 }

 String HTMLBodyElement::aLink() const
 {
     return getAttribute(alinkAttr);
 }

 void HTMLBodyElement::setALink(const String& value)
 {
     setAttribute(alinkAttr, value);
 }

 String HTMLBodyElement::bgColor() const
 {
     return getAttribute(bgcolorAttr);
 }

 void HTMLBodyElement::setBgColor(const String& value)
 {
     setAttribute(bgcolorAttr, value);
 }

 String HTMLBodyElement::link() const
 {
     return getAttribute(linkAttr);
 }

 void HTMLBodyElement::setLink(const String& value)
 {
     setAttribute(linkAttr, value);
 }

 String HTMLBodyElement::text() const
 {
     return getAttribute(textAttr);
 }

 void HTMLBodyElement::setText(const String& value)
 {
     setAttribute(textAttr, value);
 }

 String HTMLBodyElement::vLink() const
 {
     return getAttribute(vlinkAttr);
 }

 void HTMLBodyElement::setVLink(const String& value)
 {
     setAttribute(vlinkAttr, value);
 }

 static int adjustForZoom(int value, Document* document)
 {
     Frame* frame = document->frame();
     float zoomFactor = frame->pageZoomFactor() * frame->pageScaleFactor();
     if (zoomFactor == 1)
         return value;
     // Needed because of truncation (rather than rounding) when scaling up.
     if (zoomFactor > 1)
         value++;
     return static_cast<int>(value / zoomFactor);
 }

 int HTMLBodyElement::scrollLeft() const
 {
     // Update the document's layout.
     Document* document = this->document();
     document->updateLayoutIgnorePendingStylesheets();
     FrameView* view = document->view();
     return view ? adjustForZoom(view->scrollX(), document) : 0;
 }

 void HTMLBodyElement::setScrollLeft(int scrollLeft)
 {
     Document* document = this->document();
     document->updateLayoutIgnorePendingStylesheets();
     Frame* frame = document->frame();
     if (!frame)
         return;
     FrameView* view = frame->view();
     if (!view)
         return;
     view->setScrollPosition(IntPoint(static_cast<int>(scrollLeft * frame->pageZoomFactor() * frame->pageScaleFactor()), view->scrollY()));
 }

 int HTMLBodyElement::scrollTop() const
 {
     // Update the document's layout.
     Document* document = this->document();
     document->updateLayoutIgnorePendingStylesheets();
     FrameView* view = document->view();
     return view ? adjustForZoom(view->scrollY(), document) : 0;
 }

 void HTMLBodyElement::setScrollTop(int scrollTop)
 {
     Document* document = this->document();
     document->updateLayoutIgnorePendingStylesheets();
     Frame* frame = document->frame();
     if (!frame)
         return;
     FrameView* view = frame->view();
     if (!view)
         return;
     view->setScrollPosition(IntPoint(view->scrollX(), static_cast<int>(scrollTop * frame->pageZoomFactor() * frame->pageScaleFactor())));
 }

 int HTMLBodyElement::scrollHeight() const
 {
     // Update the document's layout.
     Document* document = this->document();
     document->updateLayoutIgnorePendingStylesheets();
     FrameView* view = document->view();
     return view ? adjustForZoom(view->contentsHeight(), document) : 0;
 }

 int HTMLBodyElement::scrollWidth() const
 {
     // Update the document's layout.
     Document* document = this->document();
     document->updateLayoutIgnorePendingStylesheets();
     FrameView* view = document->view();
     return view ? adjustForZoom(view->contentsWidth(), document) : 0;
 }

 void HTMLBodyElement::addSubresourceAttributeURLs(ListHashSet<KURL>& urls) const
 {
     HTMLElement::addSubresourceAttributeURLs(urls);

     addSubresourceURL(urls, document()->completeURL(getAttribute(backgroundAttr)));
 }

 void HTMLBodyElement::didMoveToNewOwnerDocument()
 {
     // When moving body elements between documents, we should have to reset the parent sheet for any
     // link style declarations.  If we don't we might crash later.
     // In practice I can't reproduce this theoretical problem.
     // webarchive/adopt-attribute-styled-body-webarchive.html tries to make sure this crash won't surface.
     if (m_linkDecl)
         m_linkDecl->setParent(document()->elementSheet());

     HTMLElement::didMoveToNewOwnerDocument();
 }

 } // namespace WebCore
	/*
	* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
	* (C) 1999 Antti Koivisto (koivisto@kde.org)
	* (C) 2000 Simon Hausmann (hausmann@kde.org)
	* (C) 2001 Dirk Mueller (mueller@kde.org)
	* Copyright (C) 2004, 2006, 2007, 2008, 2009, 2010 Apple Inc. 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
	* 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 "HTMLBodyElement.h"

	#include "Attribute.h"
	#include "CSSStyleSelector.h"
	#include "CSSStyleSheet.h"
	#include "CSSValueKeywords.h"
	#include "EventNames.h"
	#include "Frame.h"
	#include "FrameView.h"
	#include "HTMLFrameElementBase.h"
	#include "HTMLNames.h"
	#include "HTMLParserIdioms.h"
	#include "ScriptEventListener.h"

	namespace WebCore {

	using namespace HTMLNames;

	HTMLBodyElement::HTMLBodyElement(const QualifiedName& tagName, Document* document)
	: HTMLElement(tagName, document)
	{
	ASSERT(hasTagName(bodyTag));
	}

	PassRefPtr<HTMLBodyElement> HTMLBodyElement::create(Document* document)
	{
	return adoptRef(new HTMLBodyElement(bodyTag, document));
	}

	PassRefPtr<HTMLBodyElement> HTMLBodyElement::create(const QualifiedName& tagName, Document* document)
	{
	return adoptRef(new HTMLBodyElement(tagName, document));
	}

	HTMLBodyElement::~HTMLBodyElement()
	{
	if (m_linkDecl) {
	m_linkDecl->setNode(0);
	m_linkDecl->setParent(0);
	}
	}

	void HTMLBodyElement::createLinkDecl()
	{
	m_linkDecl = CSSMutableStyleDeclaration::create();
	m_linkDecl->setParent(document()->elementSheet());
	m_linkDecl->setNode(this);
	m_linkDecl->setStrictParsing(!document()->inQuirksMode());
	}

	bool HTMLBodyElement::mapToEntry(const QualifiedName& attrName, MappedAttributeEntry& result) const
	{
	if (attrName == backgroundAttr) {
	result = (MappedAttributeEntry)(eLastEntry + document()->docID());
	return false;
	}

	if (attrName == bgcolorAttr \|\|
	attrName == textAttr \|\|
	attrName == marginwidthAttr \|\|
	attrName == leftmarginAttr \|\|
	attrName == marginheightAttr \|\|
	attrName == topmarginAttr \|\|
	attrName == bgpropertiesAttr) {
	result = eUniversal;
	return false;
	}

	return HTMLElement::mapToEntry(attrName, result);
	}

	void HTMLBodyElement::parseMappedAttribute(Attribute* attr)
	{
	if (attr->name() == backgroundAttr) {
	String url = stripLeadingAndTrailingHTMLSpaces(attr->value());
	if (!url.isEmpty())
	addCSSImageProperty(attr, CSSPropertyBackgroundImage, document()->completeURL(url).string());
	} else if (attr->name() == marginwidthAttr \|\| attr->name() == leftmarginAttr) {
	addCSSLength(attr, CSSPropertyMarginRight, attr->value());
	addCSSLength(attr, CSSPropertyMarginLeft, attr->value());
	} else if (attr->name() == marginheightAttr \|\| attr->name() == topmarginAttr) {
	addCSSLength(attr, CSSPropertyMarginBottom, attr->value());
	addCSSLength(attr, CSSPropertyMarginTop, attr->value());
	} else if (attr->name() == bgcolorAttr) {
	addCSSColor(attr, CSSPropertyBackgroundColor, attr->value());
	} else if (attr->name() == textAttr) {
	addCSSColor(attr, CSSPropertyColor, attr->value());
	} else if (attr->name() == bgpropertiesAttr) {
	if (equalIgnoringCase(attr->value(), "fixed"))
	addCSSProperty(attr, CSSPropertyBackgroundAttachment, CSSValueFixed);
	} else if (attr->name() == vlinkAttr \|\|
	attr->name() == alinkAttr \|\|
	attr->name() == linkAttr) {
	if (attr->isNull()) {
	if (attr->name() == linkAttr)
	document()->resetLinkColor();
	else if (attr->name() == vlinkAttr)
	document()->resetVisitedLinkColor();
	else
	document()->resetActiveLinkColor();
	} else {
	if (!m_linkDecl)
	createLinkDecl();
	m_linkDecl->setProperty(CSSPropertyColor, attr->value(), false, false);
	RefPtr<CSSValue> val = m_linkDecl->getPropertyCSSValue(CSSPropertyColor);
	if (val && val->isPrimitiveValue()) {
	Color col = document()->styleSelector()->getColorFromPrimitiveValue(static_cast<CSSPrimitiveValue*>(val.get()));
	if (attr->name() == linkAttr)
	document()->setLinkColor(col);
	else if (attr->name() == vlinkAttr)
	document()->setVisitedLinkColor(col);
	else
	document()->setActiveLinkColor(col);
	}
	}

	if (attached())
	document()->recalcStyle(Force);
	} else if (attr->name() == onloadAttr)
	document()->setWindowAttributeEventListener(eventNames().loadEvent, createAttributeEventListener(document()->frame(), attr));
	else if (attr->name() == onbeforeunloadAttr)
	document()->setWindowAttributeEventListener(eventNames().beforeunloadEvent, createAttributeEventListener(document()->frame(), attr));
	else if (attr->name() == onunloadAttr)
	document()->setWindowAttributeEventListener(eventNames().unloadEvent, createAttributeEventListener(document()->frame(), attr));
	else if (attr->name() == onpagehideAttr)
	document()->setWindowAttributeEventListener(eventNames().pagehideEvent, createAttributeEventListener(document()->frame(), attr));
	else if (attr->name() == onpageshowAttr)
	document()->setWindowAttributeEventListener(eventNames().pageshowEvent, createAttributeEventListener(document()->frame(), attr));
	else if (attr->name() == onpopstateAttr)
	document()->setWindowAttributeEventListener(eventNames().popstateEvent, createAttributeEventListener(document()->frame(), attr));
	else if (attr->name() == onblurAttr)
	document()->setWindowAttributeEventListener(eventNames().blurEvent, createAttributeEventListener(document()->frame(), attr));
	else if (attr->name() == onfocusAttr)
	document()->setWindowAttributeEventListener(eventNames().focusEvent, createAttributeEventListener(document()->frame(), attr));
	#if ENABLE(ORIENTATION_EVENTS)
	else if (attr->name() == onorientationchangeAttr)
	document()->setWindowAttributeEventListener(eventNames().orientationchangeEvent, createAttributeEventListener(document()->frame(), attr));
	#endif
	else if (attr->name() == onhashchangeAttr)
	document()->setWindowAttributeEventListener(eventNames().hashchangeEvent, createAttributeEventListener(document()->frame(), attr));
	else if (attr->name() == onresizeAttr)
	document()->setWindowAttributeEventListener(eventNames().resizeEvent, createAttributeEventListener(document()->frame(), attr));
	else if (attr->name() == onscrollAttr)
	document()->setWindowAttributeEventListener(eventNames().scrollEvent, createAttributeEventListener(document()->frame(), attr));
	else if (attr->name() == onselectionchangeAttr)
	document()->setAttributeEventListener(eventNames().selectionchangeEvent, createAttributeEventListener(document()->frame(), attr));
	else if (attr->name() == onstorageAttr)
	document()->setWindowAttributeEventListener(eventNames().storageEvent, createAttributeEventListener(document()->frame(), attr));
	else if (attr->name() == ononlineAttr)
	document()->setWindowAttributeEventListener(eventNames().onlineEvent, createAttributeEventListener(document()->frame(), attr));
	else if (attr->name() == onofflineAttr)
	document()->setWindowAttributeEventListener(eventNames().offlineEvent, createAttributeEventListener(document()->frame(), attr));
	else
	HTMLElement::parseMappedAttribute(attr);
	}

	void HTMLBodyElement::insertedIntoDocument()
	{
	HTMLElement::insertedIntoDocument();

	// FIXME: Perhaps this code should be in attach() instead of here.
	Element* ownerElement = document()->ownerElement();
	if (ownerElement && (ownerElement->hasTagName(frameTag) \|\| ownerElement->hasTagName(iframeTag))) {
	HTMLFrameElementBase* ownerFrameElement = static_cast<HTMLFrameElementBase*>(ownerElement);
	int marginWidth = ownerFrameElement->marginWidth();
	if (marginWidth != -1)
	setAttribute(marginwidthAttr, String::number(marginWidth));
	int marginHeight = ownerFrameElement->marginHeight();
	if (marginHeight != -1)
	setAttribute(marginheightAttr, String::number(marginHeight));
	}

	// FIXME: This call to scheduleRelayout should not be needed here.
	// But without it we hang during WebKit tests; need to fix that and remove this.
	if (FrameView* view = document()->view())
	view->scheduleRelayout();

	if (document() && document()->page())
	document()->page()->updateViewportArguments();
	}

	bool HTMLBodyElement::isURLAttribute(Attribute *attr) const
	{
	return attr->name() == backgroundAttr;
	}

	bool HTMLBodyElement::supportsFocus() const
	{
	return rendererIsEditable() \|\| HTMLElement::supportsFocus();
	}

	String HTMLBodyElement::aLink() const
	{
	return getAttribute(alinkAttr);
	}

	void HTMLBodyElement::setALink(const String& value)
	{
	setAttribute(alinkAttr, value);
	}

	String HTMLBodyElement::bgColor() const
	{
	return getAttribute(bgcolorAttr);
	}

	void HTMLBodyElement::setBgColor(const String& value)
	{
	setAttribute(bgcolorAttr, value);
	}

	String HTMLBodyElement::link() const
	{
	return getAttribute(linkAttr);
	}

	void HTMLBodyElement::setLink(const String& value)
	{
	setAttribute(linkAttr, value);
	}

	String HTMLBodyElement::text() const
	{
	return getAttribute(textAttr);
	}

	void HTMLBodyElement::setText(const String& value)
	{
	setAttribute(textAttr, value);
	}

	String HTMLBodyElement::vLink() const
	{
	return getAttribute(vlinkAttr);
	}

	void HTMLBodyElement::setVLink(const String& value)
	{
	setAttribute(vlinkAttr, value);
	}

	static int adjustForZoom(int value, Document* document)
	{
	Frame* frame = document->frame();
	float zoomFactor = frame->pageZoomFactor() * frame->pageScaleFactor();
	if (zoomFactor == 1)
	return value;
	// Needed because of truncation (rather than rounding) when scaling up.
	if (zoomFactor > 1)
	value++;
	return static_cast<int>(value / zoomFactor);
	}

	int HTMLBodyElement::scrollLeft() const
	{
	// Update the document's layout.
	Document* document = this->document();
	document->updateLayoutIgnorePendingStylesheets();
	FrameView* view = document->view();
	return view ? adjustForZoom(view->scrollX(), document) : 0;
	}

	void HTMLBodyElement::setScrollLeft(int scrollLeft)
	{
	Document* document = this->document();
	document->updateLayoutIgnorePendingStylesheets();
	Frame* frame = document->frame();
	if (!frame)
	return;
	FrameView* view = frame->view();
	if (!view)
	return;
	view->setScrollPosition(IntPoint(static_cast<int>(scrollLeft * frame->pageZoomFactor() * frame->pageScaleFactor()), view->scrollY()));
	}

	int HTMLBodyElement::scrollTop() const
	{
	// Update the document's layout.
	Document* document = this->document();
	document->updateLayoutIgnorePendingStylesheets();
	FrameView* view = document->view();
	return view ? adjustForZoom(view->scrollY(), document) : 0;
	}

	void HTMLBodyElement::setScrollTop(int scrollTop)
	{
	Document* document = this->document();
	document->updateLayoutIgnorePendingStylesheets();
	Frame* frame = document->frame();
	if (!frame)
	return;
	FrameView* view = frame->view();
	if (!view)
	return;
	view->setScrollPosition(IntPoint(view->scrollX(), static_cast<int>(scrollTop * frame->pageZoomFactor() * frame->pageScaleFactor())));
	}

	int HTMLBodyElement::scrollHeight() const
	{
	// Update the document's layout.
	Document* document = this->document();
	document->updateLayoutIgnorePendingStylesheets();
	FrameView* view = document->view();
	return view ? adjustForZoom(view->contentsHeight(), document) : 0;
	}

	int HTMLBodyElement::scrollWidth() const
	{
	// Update the document's layout.
	Document* document = this->document();
	document->updateLayoutIgnorePendingStylesheets();
	FrameView* view = document->view();
	return view ? adjustForZoom(view->contentsWidth(), document) : 0;
	}

	void HTMLBodyElement::addSubresourceAttributeURLs(ListHashSet<KURL>& urls) const
	{
	HTMLElement::addSubresourceAttributeURLs(urls);

	addSubresourceURL(urls, document()->completeURL(getAttribute(backgroundAttr)));
	}

	void HTMLBodyElement::didMoveToNewOwnerDocument()
	{
	// When moving body elements between documents, we should have to reset the parent sheet for any
	// link style declarations. If we don't we might crash later.
	// In practice I can't reproduce this theoretical problem.
	// webarchive/adopt-attribute-styled-body-webarchive.html tries to make sure this crash won't surface.
	if (m_linkDecl)
	m_linkDecl->setParent(document()->elementSheet());

	HTMLElement::didMoveToNewOwnerDocument();
	}

	} // namespace WebCore