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/*
* Copyright (C) 2007 Eric Seidel <eric@webkit.org>
* Copyright (C) 2009-2017 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 "SVGFontFaceUriElement.h"
#include "CSSFontFaceSrcValue.h"
#include "CachedFont.h"
#include "CachedResourceLoader.h"
#include "CachedResourceRequest.h"
#include "Document.h"
#include "SVGElementInlines.h"
#include "SVGElementTypeHelpers.h"
#include "SVGFontFaceElement.h"
#include "SVGNames.h"
#include "XLinkNames.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(SVGFontFaceUriElement);
using namespace SVGNames;
inline SVGFontFaceUriElement::SVGFontFaceUriElement(const QualifiedName& tagName, Document& document)
: SVGElement(tagName, document, makeUniqueRef<PropertyRegistry>(*this))
{
ASSERT(hasTagName(font_face_uriTag));
}
Ref<SVGFontFaceUriElement> SVGFontFaceUriElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new SVGFontFaceUriElement(tagName, document));
}
SVGFontFaceUriElement::~SVGFontFaceUriElement()
{
if (m_cachedFont)
m_cachedFont->removeClient(*this);
}
Ref<CSSFontFaceSrcResourceValue> SVGFontFaceUriElement::createSrcValue() const
{
ResolvedURL location;
location.specifiedURLString = getAttribute(SVGNames::hrefAttr, XLinkNames::hrefAttr);
if (!location.specifiedURLString.isNull())
location.resolvedURL = document().completeURL(location.specifiedURLString);
auto& format = attributeWithoutSynchronization(formatAttr);
return CSSFontFaceSrcResourceValue::create(WTFMove(location), format.isEmpty() ? "svg"_s : format.string(), { FontTechnology::ColorSvg }, LoadedFromOpaqueSource::No);
}
void SVGFontFaceUriElement::attributeChanged(const QualifiedName& name, const AtomString& oldValue, const AtomString& newValue, AttributeModificationReason attributeModificationReason)
{
if (name == SVGNames::hrefAttr || name == XLinkNames::hrefAttr)
loadFont();
SVGElement::attributeChanged(name, oldValue, newValue, attributeModificationReason);
}
void SVGFontFaceUriElement::childrenChanged(const ChildChange& change)
{
SVGElement::childrenChanged(change);
if (!parentNode() || !parentNode()->hasTagName(font_face_srcTag))
return;
RefPtr grandParent = parentNode()->parentNode();
if (grandParent && grandParent->hasTagName(font_faceTag))
downcast<SVGFontFaceElement>(*grandParent).rebuildFontFace();
}
Node::InsertedIntoAncestorResult SVGFontFaceUriElement::insertedIntoAncestor(InsertionType insertionType, ContainerNode& parentOfInsertedTree)
{
loadFont();
return SVGElement::insertedIntoAncestor(insertionType, parentOfInsertedTree);
}
static bool isSVGFontTarget(const SVGFontFaceUriElement& element)
{
auto& format = element.attributeWithoutSynchronization(formatAttr);
return format.isEmpty() || equalLettersIgnoringASCIICase(format, "svg"_s);
}
void SVGFontFaceUriElement::loadFont()
{
if (m_cachedFont)
m_cachedFont->removeClient(*this);
const AtomString& href = getAttribute(SVGNames::hrefAttr, XLinkNames::hrefAttr);
if (!href.isNull()) {
ResourceLoaderOptions options = CachedResourceLoader::defaultCachedResourceOptions();
options.contentSecurityPolicyImposition = isInUserAgentShadowTree() ? ContentSecurityPolicyImposition::SkipPolicyCheck : ContentSecurityPolicyImposition::DoPolicyCheck;
CachedResourceLoader& cachedResourceLoader = document().cachedResourceLoader();
CachedResourceRequest request(ResourceRequest(document().completeURL(href)), options);
request.setInitiator(*this);
m_cachedFont = cachedResourceLoader.requestFont(WTFMove(request), isSVGFontTarget(*this)).value_or(nullptr);
if (m_cachedFont) {
m_cachedFont->addClient(*this);
m_cachedFont->beginLoadIfNeeded(cachedResourceLoader);
}
} else
m_cachedFont = nullptr;
}
}
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