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/*
* 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) 2004-2023 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 "CSSImageValue.h"
#include "CSSParser.h"
#include "CSSValueKeywords.h"
#include "DOMWrapperWorld.h"
#include "ElementInlines.h"
#include "EventNames.h"
#include "HTMLFrameElement.h"
#include "HTMLIFrameElement.h"
#include "HTMLNames.h"
#include "JSHTMLBodyElement.h"
#include "LocalDOMWindow.h"
#include "MutableStyleProperties.h"
#include "NodeName.h"
#include "ResourceLoaderOptions.h"
#include <wtf/NeverDestroyed.h>
#include <wtf/TZoneMallocInlines.h>
namespace WebCore {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED_IMPL(HTMLBodyElement);
using namespace HTMLNames;
HTMLBodyElement::HTMLBodyElement(const QualifiedName& tagName, Document& document)
: HTMLElement(tagName, document)
{
ASSERT(hasTagName(bodyTag));
}
Ref<HTMLBodyElement> HTMLBodyElement::create(Document& document)
{
return adoptRef(*new HTMLBodyElement(bodyTag, document));
}
Ref<HTMLBodyElement> HTMLBodyElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new HTMLBodyElement(tagName, document));
}
HTMLBodyElement::~HTMLBodyElement() = default;
bool HTMLBodyElement::hasPresentationalHintsForAttribute(const QualifiedName& name) const
{
switch (name.nodeName()) {
case AttributeNames::backgroundAttr:
case AttributeNames::marginwidthAttr:
case AttributeNames::leftmarginAttr:
case AttributeNames::marginheightAttr:
case AttributeNames::topmarginAttr:
case AttributeNames::bgcolorAttr:
case AttributeNames::textAttr:
return true;
default:
break;
}
return HTMLElement::hasPresentationalHintsForAttribute(name);
}
void HTMLBodyElement::collectPresentationalHintsForAttribute(const QualifiedName& name, const AtomString& value, MutableStyleProperties& style)
{
switch (name.nodeName()) {
case AttributeNames::backgroundAttr: {
auto url = value.string().trim(isASCIIWhitespace);
if (!url.isEmpty()) {
auto imageValue = CSSImageValue::create(document().completeURL(url), LoadedFromOpaqueSource::No, localName());
style.setProperty(CSSProperty(CSSPropertyBackgroundImage, WTFMove(imageValue)));
}
break;
}
case AttributeNames::marginwidthAttr:
case AttributeNames::leftmarginAttr:
addHTMLLengthToStyle(style, CSSPropertyMarginRight, value);
addHTMLLengthToStyle(style, CSSPropertyMarginLeft, value);
break;
case AttributeNames::marginheightAttr:
case AttributeNames::topmarginAttr:
addHTMLLengthToStyle(style, CSSPropertyMarginBottom, value);
addHTMLLengthToStyle(style, CSSPropertyMarginTop, value);
break;
case AttributeNames::bgcolorAttr:
addHTMLColorToStyle(style, CSSPropertyBackgroundColor, value);
break;
case AttributeNames::textAttr:
addHTMLColorToStyle(style, CSSPropertyColor, value);
break;
default:
HTMLElement::collectPresentationalHintsForAttribute(name, value, style);
break;
}
}
const AtomString& HTMLBodyElement::eventNameForWindowEventHandlerAttribute(const QualifiedName& attributeName)
{
static NeverDestroyed map = [] {
EventHandlerNameMap map;
JSHTMLBodyElement::forEachWindowEventHandlerContentAttribute([&] (const AtomString& attributeName, const AtomString& eventName) {
map.add(attributeName.impl(), eventName);
});
return map;
}();
return eventNameForEventHandlerAttribute(attributeName, map);
}
void HTMLBodyElement::attributeChanged(const QualifiedName& name, const AtomString& oldValue, const AtomString& newValue, AttributeModificationReason attributeModificationReason)
{
switch (name.nodeName()) {
case AttributeNames::vlinkAttr:
if (auto parsedColor = parseLegacyColorValue(newValue))
document().setVisitedLinkColor(*parsedColor);
else
document().resetVisitedLinkColor();
invalidateStyleForSubtree();
return;
case AttributeNames::alinkAttr:
if (auto parsedColor = parseLegacyColorValue(newValue))
document().setActiveLinkColor(*parsedColor);
else
document().resetActiveLinkColor();
invalidateStyleForSubtree();
return;
case AttributeNames::linkAttr:
if (auto parsedColor = parseLegacyColorValue(newValue))
document().setLinkColor(*parsedColor);
else
document().resetLinkColor();
invalidateStyleForSubtree();
return;
case AttributeNames::onselectionchangeAttr:
// FIXME: Emit "selectionchange" event at <input> / <textarea> elements and remove this special-case.
// https://bugs.webkit.org/show_bug.cgi?id=234348
document().setAttributeEventListener(eventNames().selectionchangeEvent, name, newValue, mainThreadNormalWorldSingleton());
return;
default:
break;
}
if (auto& eventName = eventNameForWindowEventHandlerAttribute(name); !eventName.isNull()) {
document().setWindowAttributeEventListener(eventName, name, newValue, mainThreadNormalWorldSingleton());
return;
}
HTMLElement::attributeChanged(name, oldValue, newValue, attributeModificationReason);
}
Node::InsertedIntoAncestorResult HTMLBodyElement::insertedIntoAncestor(InsertionType insertionType, ContainerNode& parentOfInsertedTree)
{
HTMLElement::insertedIntoAncestor(insertionType, parentOfInsertedTree);
if (!insertionType.connectedToDocument)
return InsertedIntoAncestorResult::Done;
if (!is<HTMLFrameElementBase>(document().ownerElement()))
return InsertedIntoAncestorResult::Done;
return InsertedIntoAncestorResult::NeedsPostInsertionCallback;
}
void HTMLBodyElement::didFinishInsertingNode()
{
// A DOM mutation could have happened in between the call to insertedIntoAncestor() and the
// call to didFinishInsertingNode().
if (!is<HTMLFrameElementBase>(document().ownerElement()))
return;
Ref ownerElement = *document().ownerElement();
// FIXME: It's surprising this is web compatible since it means marginwidth and marginheight attributes
// appear or get overwritten on body elements of a document embedded through <iframe> or <frame>.
// Better to find a way to do addHTMLLengthToStyle based on the attributes from the frame element,
// without modifying the body element's attributes. Could also add code so we can respond to updates
// to the frame element attributes.
auto marginWidth = ownerElement->attributeWithoutSynchronization(marginwidthAttr);
if (!marginWidth.isNull())
setAttributeWithoutSynchronization(marginwidthAttr, marginWidth);
auto marginHeight = ownerElement->attributeWithoutSynchronization(marginheightAttr);
if (!marginHeight.isNull())
setAttributeWithoutSynchronization(marginheightAttr, marginHeight);
}
bool HTMLBodyElement::isURLAttribute(const Attribute& attribute) const
{
return attribute.name() == backgroundAttr || HTMLElement::isURLAttribute(attribute);
}
bool HTMLBodyElement::supportsFocus() const
{
return hasEditableStyle() || HTMLElement::supportsFocus();
}
void HTMLBodyElement::addSubresourceAttributeURLs(ListHashSet<URL>& urls) const
{
HTMLElement::addSubresourceAttributeURLs(urls);
addSubresourceURL(urls, document().completeURL(attributeWithoutSynchronization(backgroundAttr)));
}
} // namespace WebCore
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