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/*
* (C) 1999-2003 Lars Knoll (knoll@kde.org)
* Copyright (C) 2004-2021 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.
*/
#pragma once
#include "CSSValue.h"
#include "CachedResourceHandle.h"
#include "ResourceLoaderOptions.h"
#include <wtf/Function.h>
#include <wtf/Ref.h>
namespace WebCore {
class CachedImage;
class CachedResourceLoader;
class DeprecatedCSSOMValue;
class CSSStyleDeclaration;
class RenderElement;
namespace Style {
class BuilderState;
}
struct ResolvedURL {
String specifiedURLString;
URL resolvedURL;
bool isLocalURL() const;
};
class CSSImageValue final : public CSSValue {
public:
static Ref<CSSImageValue> create(ResolvedURL&&, LoadedFromOpaqueSource);
static Ref<CSSImageValue> create(URL&&, LoadedFromOpaqueSource);
static Ref<CSSImageValue> create(CachedImage&);
~CSSImageValue();
bool isPending() const;
CachedImage* loadImage(CachedResourceLoader&, const ResourceLoaderOptions&);
CachedImage* cachedImage() const { return m_cachedImage ? m_cachedImage.value().get() : nullptr; }
// Take care when using this, and read https://drafts.csswg.org/css-values/#relative-urls
const URL& imageURL() const { return m_location.resolvedURL; }
URL reresolvedURL(const Document&) const;
String customCSSText() const;
Ref<DeprecatedCSSOMValue> createDeprecatedCSSOMWrapper(CSSStyleDeclaration&) const;
bool traverseSubresources(const Function<bool(const CachedResource&)>& handler) const;
bool equals(const CSSImageValue&) const;
bool knownToBeOpaque(const RenderElement&) const;
void setInitiator(const AtomString& name) { m_initiatorName = name; }
Ref<CSSImageValue> valueWithStylesResolved(Style::BuilderState&);
private:
CSSImageValue(ResolvedURL&&, LoadedFromOpaqueSource);
explicit CSSImageValue(CachedImage&);
ResolvedURL m_location;
std::optional<CachedResourceHandle<CachedImage>> m_cachedImage;
AtomString m_initiatorName;
LoadedFromOpaqueSource m_loadedFromOpaqueSource { LoadedFromOpaqueSource::No };
RefPtr<CSSImageValue> m_unresolvedValue;
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_CSS_VALUE(CSSImageValue, isImageValue())
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