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/*
* (C) 1999-2003 Lars Knoll (knoll@kde.org)
* Copyright (C) 2004-2022 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 "CSSRuleList.h"
#include "CommonAtomStrings.h"
#include "ExceptionOr.h"
#include "MediaList.h"
#include "MediaQuery.h"
#include "StyleSheet.h"
#include <memory>
#include <variant>
#include <wtf/CheckedPtr.h>
#include <wtf/Noncopyable.h>
#include <wtf/TypeCasts.h>
#include <wtf/WeakHashSet.h>
#include <wtf/WeakPtr.h>
#include <wtf/text/AtomStringHash.h>
#include <wtf/text/TextPosition.h>
namespace WebCore {
class CSSImportRule;
class CSSParser;
class CSSRule;
class CSSStyleSheet;
class CachedCSSStyleSheet;
class ContainerNode;
class DeferredPromise;
class Document;
class Element;
class WeakPtrImplWithEventTargetData;
class StyleRule;
class StyleRuleBase;
class StyleRuleKeyframes;
class StyleRuleWithNesting;
class StyleSheetContents;
namespace Style {
class Scope;
}
class CSSStyleSheet final : public StyleSheet, public CanMakeSingleThreadWeakPtr<CSSStyleSheet> {
public:
struct Init {
String baseURL;
std::variant<RefPtr<MediaList>, String> media { emptyString() };
bool disabled { false };
};
static Ref<CSSStyleSheet> create(Ref<StyleSheetContents>&&, CSSImportRule* ownerRule = nullptr, std::optional<bool>isOriginClean = std::nullopt);
static Ref<CSSStyleSheet> create(Ref<StyleSheetContents>&&, Node& ownerNode, const std::optional<bool>& isOriginClean = std::nullopt);
static Ref<CSSStyleSheet> createInline(Ref<StyleSheetContents>&&, Element& owner, const TextPosition& startPosition);
static ExceptionOr<Ref<CSSStyleSheet>> create(Document&, Init&&);
virtual ~CSSStyleSheet();
CSSStyleSheet* parentStyleSheet() const final;
Node* ownerNode() const final;
MediaList* media() const final;
String href() const final;
String title() const final { return !m_title.isEmpty() ? m_title : String(); }
bool disabled() const final { return m_isDisabled; }
void setDisabled(bool) final;
WEBCORE_EXPORT RefPtr<CSSRuleList> cssRules();
ExceptionOr<Ref<CSSRuleList>> cssRulesForBindings();
ExceptionOr<Ref<CSSRuleList>> rules() { return this->cssRulesForBindings(); }
WEBCORE_EXPORT ExceptionOr<unsigned> insertRule(const String& rule, unsigned index);
WEBCORE_EXPORT ExceptionOr<void> deleteRule(unsigned index);
WEBCORE_EXPORT ExceptionOr<int> addRule(const String& selector, const String& style, std::optional<unsigned> index);
ExceptionOr<void> removeRule(unsigned index) { return deleteRule(index); }
void replace(String&&, Ref<DeferredPromise>&&);
ExceptionOr<void> replaceSync(String&&);
bool wasMutated() const { return m_wasMutated; }
bool wasConstructedByJS() const { return m_wasConstructedByJS; }
Document* constructorDocument() const;
// For CSSRuleList.
unsigned length() const;
CSSRule* item(unsigned index);
void clearOwnerNode() final;
WEBCORE_EXPORT CSSImportRule* ownerRule() const final;
URL baseURL() const final;
bool isLoading() const final;
void clearOwnerRule() { m_ownerRule = nullptr; }
void removeAdoptingTreeScope(ContainerNode&);
void addAdoptingTreeScope(ContainerNode&);
Document* ownerDocument() const;
CSSStyleSheet& rootStyleSheet();
const CSSStyleSheet& rootStyleSheet() const;
Style::Scope* styleScope();
const MQ::MediaQueryList& mediaQueries() const { return m_mediaQueries; }
void setMediaQueries(MQ::MediaQueryList&&);
void setTitle(const String& title) { m_title = title; }
RefPtr<StyleRuleWithNesting> prepareChildStyleRuleForNesting(StyleRule&);
enum RuleMutationType { OtherMutation, RuleInsertion, KeyframesRuleMutation, RuleReplace };
enum class ContentsClonedForMutation : bool { No, Yes };
class RuleMutationScope {
WTF_MAKE_NONCOPYABLE(RuleMutationScope);
public:
RuleMutationScope(CSSStyleSheet*, RuleMutationType = OtherMutation, StyleRuleKeyframes* insertedKeyframesRule = nullptr);
RuleMutationScope(CSSRule*);
~RuleMutationScope();
private:
CSSStyleSheet* m_styleSheet;
RuleMutationType m_mutationType;
ContentsClonedForMutation m_contentsClonedForMutation;
RefPtr<StyleRuleKeyframes> m_insertedKeyframesRule;
String m_modifiedKeyframesRuleName;
};
ContentsClonedForMutation willMutateRules();
void didMutateRules(RuleMutationType, ContentsClonedForMutation, StyleRuleKeyframes* insertedKeyframesRule, const String& modifiedKeyframesRuleName);
void didMutateRuleFromCSSStyleDeclaration();
void didMutate();
void clearChildRuleCSSOMWrappers();
void reattachChildRuleCSSOMWrappers();
StyleSheetContents& contents() { return m_contents; }
Ref<StyleSheetContents> protectedContents();
bool isInline() const { return m_isInlineStylesheet; }
TextPosition startPosition() const { return m_startPosition; }
void detachFromDocument() { clearOwnerNode(); }
bool canAccessRules() const;
String debugDescription() const final;
String cssText(const CSS::SerializationContext&);
void getChildStyleSheets(UncheckedKeyHashSet<RefPtr<CSSStyleSheet>>&);
bool isDetached() const;
private:
CSSStyleSheet(Ref<StyleSheetContents>&&, CSSImportRule* ownerRule, std::optional<bool> isOriginClean);
CSSStyleSheet(Ref<StyleSheetContents>&&, Node* ownerNode, const TextPosition& startPosition, bool isInlineStylesheet);
CSSStyleSheet(Ref<StyleSheetContents>&&, Node& ownerNode, const TextPosition& startPosition, bool isInlineStylesheet, const std::optional<bool>&);
CSSStyleSheet(Ref<StyleSheetContents>&&, Document&, Init&&);
void forEachStyleScope(NOESCAPE const Function<void(Style::Scope&)>&);
bool isCSSStyleSheet() const final { return true; }
String type() const final { return cssContentTypeAtom(); }
RefPtr<CSSRuleList> cssRulesSkippingAccessCheck();
Ref<StyleSheetContents> m_contents;
bool m_isInlineStylesheet { false };
bool m_isDisabled { false };
bool m_wasMutated { false };
bool m_wasConstructedByJS { false }; // constructed flag in the spec.
std::optional<bool> m_isOriginClean;
String m_title;
MQ::MediaQueryList m_mediaQueries;
WeakPtr<Style::Scope> m_styleScope;
WeakPtr<Document, WeakPtrImplWithEventTargetData> m_constructorDocument;
WeakHashSet<ContainerNode, WeakPtrImplWithEventTargetData> m_adoptingTreeScopes;
WeakPtr<Node, WeakPtrImplWithEventTargetData> m_ownerNode;
WeakPtr<CSSImportRule> m_ownerRule;
TextPosition m_startPosition;
mutable RefPtr<MediaList> m_mediaCSSOMWrapper;
mutable Vector<RefPtr<CSSRule>> m_childRuleCSSOMWrappers;
mutable std::unique_ptr<CSSRuleList> m_ruleListCSSOMWrapper;
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::CSSStyleSheet)
static bool isType(const WebCore::StyleSheet& styleSheet) { return styleSheet.isCSSStyleSheet(); }
SPECIALIZE_TYPE_TRAITS_END()
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