| /* |
| * (C) 1999-2003 Lars Knoll (knoll@kde.org) |
| * Copyright (C) 2004, 2006, 2007, 2008, 2009, 2010, 2012 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. |
| */ |
| |
| #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_CSS_CSS_STYLE_SHEET_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_CORE_CSS_CSS_STYLE_SHEET_H_ |
| |
| #include "base/macros.h" |
| #include "third_party/blink/renderer/core/core_export.h" |
| #include "third_party/blink/renderer/core/css/css_rule.h" |
| #include "third_party/blink/renderer/core/css/media_query_evaluator.h" |
| #include "third_party/blink/renderer/core/css/style_sheet.h" |
| #include "third_party/blink/renderer/core/dom/tree_scope.h" |
| #include "third_party/blink/renderer/platform/bindings/trace_wrapper_member.h" |
| #include "third_party/blink/renderer/platform/heap/handle.h" |
| #include "third_party/blink/renderer/platform/wtf/noncopyable.h" |
| #include "third_party/blink/renderer/platform/wtf/text/text_encoding.h" |
| #include "third_party/blink/renderer/platform/wtf/text/text_position.h" |
| |
| namespace blink { |
| |
| class CSSImportRule; |
| class CSSRule; |
| class CSSRuleList; |
| class CSSStyleSheet; |
| class CSSStyleSheetInit; |
| class Document; |
| class ExceptionState; |
| class MediaQuerySet; |
| class SecurityOrigin; |
| class StyleSheetContents; |
| |
| class CORE_EXPORT CSSStyleSheet final : public StyleSheet { |
| DEFINE_WRAPPERTYPEINFO(); |
| |
| public: |
| static const Document* SingleOwnerDocument(const CSSStyleSheet*); |
| |
| static CSSStyleSheet* Create(Document&, |
| const CSSStyleSheetInit&, |
| ExceptionState&); |
| |
| static CSSStyleSheet* Create(StyleSheetContents*, |
| CSSImportRule* owner_rule = nullptr); |
| static CSSStyleSheet* Create(StyleSheetContents*, Node& owner_node); |
| static CSSStyleSheet* CreateInline( |
| Node&, |
| const KURL&, |
| const TextPosition& start_position = TextPosition::MinimumPosition(), |
| const WTF::TextEncoding& = WTF::TextEncoding()); |
| static CSSStyleSheet* CreateInline( |
| StyleSheetContents*, |
| Node& owner_node, |
| const TextPosition& start_position = TextPosition::MinimumPosition()); |
| |
| ~CSSStyleSheet() override; |
| |
| CSSStyleSheet* parentStyleSheet() const override; |
| Node* ownerNode() const override { return owner_node_; } |
| MediaList* media() override; |
| String href() const override; |
| String title() const override { return title_; } |
| bool disabled() const override { return is_disabled_; } |
| void setDisabled(bool) override; |
| |
| CSSRuleList* cssRules(ExceptionState&); |
| unsigned insertRule(const String& rule, unsigned index, ExceptionState&); |
| void deleteRule(unsigned index, ExceptionState&); |
| |
| // IE Extensions |
| CSSRuleList* rules(ExceptionState&); |
| int addRule(const String& selector, |
| const String& style, |
| int index, |
| ExceptionState&); |
| int addRule(const String& selector, const String& style, ExceptionState&); |
| void removeRule(unsigned index, ExceptionState& exception_state) { |
| deleteRule(index, exception_state); |
| } |
| |
| // For CSSRuleList. |
| unsigned length() const; |
| CSSRule* item(unsigned index); |
| |
| void ClearOwnerNode() override; |
| |
| CSSRule* ownerRule() const override { return owner_rule_; } |
| KURL BaseURL() const override; |
| bool IsLoading() const override; |
| |
| void ClearOwnerRule() { owner_rule_ = nullptr; } |
| Document* OwnerDocument() const; |
| const MediaQuerySet* MediaQueries() const { return media_queries_.get(); } |
| void SetMediaQueries(scoped_refptr<MediaQuerySet>); |
| bool MatchesMediaQueries(const MediaQueryEvaluator&); |
| bool HasMediaQueryResults() const { |
| return !viewport_dependent_media_query_results_.IsEmpty() || |
| !device_dependent_media_query_results_.IsEmpty(); |
| } |
| const MediaQueryResultList& ViewportDependentMediaQueryResults() const { |
| return viewport_dependent_media_query_results_; |
| } |
| const MediaQueryResultList& DeviceDependentMediaQueryResults() const { |
| return device_dependent_media_query_results_; |
| } |
| void SetTitle(const String& title) { title_ = title; } |
| // Set by LinkStyle iff CORS-enabled fetch of stylesheet succeeded from this |
| // origin. |
| void SetAllowRuleAccessFromOrigin( |
| scoped_refptr<const SecurityOrigin> allowed_origin); |
| |
| void AddedAdoptedToTreeScope(TreeScope& tree_scope) { |
| adopted_tree_scopes_.insert(&tree_scope); |
| } |
| |
| void RemovedAdoptedFromTreeScope(TreeScope& tree_scope) { |
| adopted_tree_scopes_.erase(&tree_scope); |
| } |
| |
| Document* AssociatedDocument() { return associated_document_; } |
| |
| void SetAssociatedDocument(Document* document) { |
| associated_document_ = document; |
| } |
| |
| void AddToCustomElementTagNames(const AtomicString& local_tag_name) { |
| custom_element_tag_names_.insert(local_tag_name); |
| } |
| |
| class RuleMutationScope { |
| STACK_ALLOCATED(); |
| |
| public: |
| explicit RuleMutationScope(CSSStyleSheet*); |
| explicit RuleMutationScope(CSSRule*); |
| ~RuleMutationScope(); |
| |
| private: |
| Member<CSSStyleSheet> style_sheet_; |
| DISALLOW_COPY_AND_ASSIGN(RuleMutationScope); |
| }; |
| |
| void WillMutateRules(); |
| void DidMutateRules(); |
| void DidMutate(); |
| |
| class InspectorMutationScope { |
| STACK_ALLOCATED(); |
| |
| public: |
| explicit InspectorMutationScope(CSSStyleSheet*); |
| ~InspectorMutationScope(); |
| |
| private: |
| Member<CSSStyleSheet> style_sheet_; |
| DISALLOW_COPY_AND_ASSIGN(InspectorMutationScope); |
| }; |
| |
| void EnableRuleAccessForInspector(); |
| void DisableRuleAccessForInspector(); |
| |
| StyleSheetContents* Contents() const { return contents_.Get(); } |
| |
| bool IsInline() const { return is_inline_stylesheet_; } |
| TextPosition StartPositionInSource() const { return start_position_; } |
| |
| bool SheetLoaded(); |
| bool LoadCompleted() const { return load_completed_; } |
| void StartLoadingDynamicSheet(); |
| void SetText(const String&, bool allow_import_rules, ExceptionState&); |
| void SetMedia(MediaList*); |
| void SetAlternateFromConstructor(bool); |
| bool IsAlternate() const; |
| bool CanBeActivated(const String& current_preferrable_name) const; |
| |
| void Trace(blink::Visitor*) override; |
| |
| private: |
| CSSStyleSheet(StyleSheetContents*, CSSImportRule* owner_rule); |
| CSSStyleSheet(StyleSheetContents*, |
| Node& owner_node, |
| bool is_inline_stylesheet, |
| const TextPosition& start_position); |
| |
| bool IsCSSStyleSheet() const override { return true; } |
| String type() const override { return "text/css"; } |
| |
| void ReattachChildRuleCSSOMWrappers(); |
| |
| bool CanAccessRules() const; |
| |
| void SetLoadCompleted(bool); |
| |
| FRIEND_TEST_ALL_PREFIXES(CSSStyleSheetTest, |
| CSSStyleSheetConstructionWithEmptyCSSStyleSheetInit); |
| FRIEND_TEST_ALL_PREFIXES( |
| CSSStyleSheetTest, |
| CSSStyleSheetConstructionWithNonEmptyCSSStyleSheetInit); |
| FRIEND_TEST_ALL_PREFIXES(CSSStyleSheetTest, |
| CreateEmptyCSSStyleSheetWithEmptyCSSStyleSheetInit); |
| FRIEND_TEST_ALL_PREFIXES( |
| CSSStyleSheetTest, |
| CreateEmptyCSSStyleSheetWithNonEmptyCSSStyleSheetInit); |
| FRIEND_TEST_ALL_PREFIXES( |
| CSSStyleSheetTest, |
| CreateCSSStyleSheetWithEmptyCSSStyleSheetInitAndText); |
| FRIEND_TEST_ALL_PREFIXES( |
| CSSStyleSheetTest, |
| CreateCSSStyleSheetWithNonEmptyCSSStyleSheetInitAndText); |
| |
| bool AlternateFromConstructor() const { return alternate_from_constructor_; } |
| |
| Member<StyleSheetContents> contents_; |
| bool is_inline_stylesheet_ = false; |
| bool is_disabled_ = false; |
| bool load_completed_ = false; |
| // This alternate variable is only used for constructed CSSStyleSheet. |
| // For other CSSStyleSheet, consult the alternate attribute. |
| bool alternate_from_constructor_ = false; |
| bool enable_rule_access_for_inspector_ = false; |
| |
| String title_; |
| scoped_refptr<MediaQuerySet> media_queries_; |
| MediaQueryResultList viewport_dependent_media_query_results_; |
| MediaQueryResultList device_dependent_media_query_results_; |
| |
| scoped_refptr<const SecurityOrigin> allow_rule_access_from_origin_; |
| |
| Member<Node> owner_node_; |
| Member<CSSRule> owner_rule_; |
| HeapHashSet<Member<TreeScope>> adopted_tree_scopes_; |
| Member<Document> associated_document_; |
| HashSet<AtomicString> custom_element_tag_names_; |
| |
| TextPosition start_position_; |
| Member<MediaList> media_cssom_wrapper_; |
| mutable HeapVector<TraceWrapperMember<CSSRule>> child_rule_cssom_wrappers_; |
| mutable TraceWrapperMember<CSSRuleList> rule_list_cssom_wrapper_; |
| DISALLOW_COPY_AND_ASSIGN(CSSStyleSheet); |
| }; |
| |
| inline CSSStyleSheet::RuleMutationScope::RuleMutationScope(CSSStyleSheet* sheet) |
| : style_sheet_(sheet) { |
| style_sheet_->WillMutateRules(); |
| } |
| |
| inline CSSStyleSheet::RuleMutationScope::RuleMutationScope(CSSRule* rule) |
| : style_sheet_(rule ? rule->parentStyleSheet() : nullptr) { |
| if (style_sheet_) |
| style_sheet_->WillMutateRules(); |
| } |
| |
| inline CSSStyleSheet::RuleMutationScope::~RuleMutationScope() { |
| if (style_sheet_) |
| style_sheet_->DidMutateRules(); |
| } |
| |
| DEFINE_TYPE_CASTS(CSSStyleSheet, |
| StyleSheet, |
| sheet, |
| sheet->IsCSSStyleSheet(), |
| sheet.IsCSSStyleSheet()); |
| |
| } // namespace blink |
| |
| #endif |