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/*
* (C) 1999-2003 Lars Knoll (knoll@kde.org)
* (C) 2002-2003 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2002-2022 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 "CachedResourceHandle.h"
#include "CachedStyleSheetClient.h"
#include "MediaQuery.h"
#include "StyleRule.h"
#include <wtf/TypeCasts.h>
namespace WebCore {
class CachedCSSStyleSheet;
class StyleSheetContents;
class StyleRuleImport final : public StyleRuleBase {
WTF_MAKE_FAST_ALLOCATED;
public:
static Ref<StyleRuleImport> create(const String& href, MQ::MediaQueryList&&, std::optional<CascadeLayerName>&&);
~StyleRuleImport();
Ref<StyleRuleImport> copy() const { RELEASE_ASSERT_NOT_REACHED(); }
StyleSheetContents* parentStyleSheet() const { return m_parentStyleSheet; }
void setParentStyleSheet(StyleSheetContents* sheet) { ASSERT(sheet); m_parentStyleSheet = sheet; }
void clearParentStyleSheet() { m_parentStyleSheet = nullptr; }
void cancelLoad();
String href() const { return m_strHref; }
StyleSheetContents* styleSheet() const { return m_styleSheet.get(); }
bool isLoading() const;
const MQ::MediaQueryList& mediaQueries() const { return m_mediaQueries; }
void setMediaQueries(MQ::MediaQueryList&& queries) { m_mediaQueries = WTFMove(queries); }
void requestStyleSheet();
const CachedCSSStyleSheet* cachedCSSStyleSheet() const { return m_cachedSheet.get(); }
const std::optional<CascadeLayerName>& cascadeLayerName() const { return m_cascadeLayerName; }
private:
// NOTE: We put the CachedStyleSheetClient in a member instead of inheriting from it
// to avoid adding a vptr to StyleRuleImport.
class ImportedStyleSheetClient final : public CachedStyleSheetClient {
public:
ImportedStyleSheetClient(StyleRuleImport* ownerRule) : m_ownerRule(ownerRule) { }
virtual ~ImportedStyleSheetClient() = default;
void setCSSStyleSheet(const String& href, const URL& baseURL, const String& charset, const CachedCSSStyleSheet* sheet) final
{
m_ownerRule->setCSSStyleSheet(href, baseURL, charset, sheet);
}
private:
StyleRuleImport* m_ownerRule;
};
void setCSSStyleSheet(const String& href, const URL& baseURL, const String& charset, const CachedCSSStyleSheet*);
friend class ImportedStyleSheetClient;
StyleRuleImport(const String& href, MQ::MediaQueryList&&, std::optional<CascadeLayerName>&&);
StyleSheetContents* m_parentStyleSheet { nullptr };
ImportedStyleSheetClient m_styleSheetClient;
String m_strHref;
MQ::MediaQueryList m_mediaQueries;
RefPtr<StyleSheetContents> m_styleSheet;
std::optional<CascadeLayerName> m_cascadeLayerName;
CachedResourceHandle<CachedCSSStyleSheet> m_cachedSheet;
bool m_loading { false };
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::StyleRuleImport)
static bool isType(const WebCore::StyleRuleBase& rule) { return rule.isImportRule(); }
SPECIALIZE_TYPE_TRAITS_END()
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