зеркало из https://github.com/mozilla/gecko-dev.git
211 строки
7.3 KiB
C++
211 строки
7.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_StyleSheet_h
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#define mozilla_StyleSheet_h
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#include "mozilla/css/SheetParsingMode.h"
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#include "mozilla/dom/CSSStyleSheetBinding.h"
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#include "mozilla/net/ReferrerPolicy.h"
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#include "mozilla/StyleBackendType.h"
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#include "mozilla/CORSMode.h"
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#include "mozilla/ServoUtils.h"
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#include "nsIDOMCSSStyleSheet.h"
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#include "nsWrapperCache.h"
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class nsIDocument;
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class nsINode;
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class nsIPrincipal;
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class nsMediaList;
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namespace mozilla {
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class CSSStyleSheet;
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class ServoStyleSheet;
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struct StyleSheetInfo;
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namespace dom {
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class CSSRuleList;
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class SRIMetadata;
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} // namespace dom
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/**
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* Superclass for data common to CSSStyleSheet and ServoStyleSheet.
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*/
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class StyleSheet : public nsIDOMCSSStyleSheet
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, public nsWrapperCache
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{
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protected:
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StyleSheet(StyleBackendType aType, css::SheetParsingMode aParsingMode);
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StyleSheet(const StyleSheet& aCopy,
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nsIDocument* aDocumentToUse,
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nsINode* aOwningNodeToUse);
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virtual ~StyleSheet() {}
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public:
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(StyleSheet)
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void SetOwningNode(nsINode* aOwningNode)
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{
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mOwningNode = aOwningNode;
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}
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css::SheetParsingMode ParsingMode() { return mParsingMode; }
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mozilla::dom::CSSStyleSheetParsingMode ParsingModeDOM();
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// The document this style sheet is associated with. May be null
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nsIDocument* GetDocument() const { return mDocument; }
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/**
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* Whether the sheet is complete.
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*/
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bool IsComplete() const;
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void SetComplete();
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MOZ_DECL_STYLO_METHODS(CSSStyleSheet, ServoStyleSheet)
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// Whether the sheet is for an inline <style> element.
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inline bool IsInline() const;
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inline nsIURI* GetSheetURI() const;
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/* Get the URI this sheet was originally loaded from, if any. Can
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return null */
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inline nsIURI* GetOriginalURI() const;
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inline nsIURI* GetBaseURI() const;
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/**
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* SetURIs must be called on all sheets before parsing into them.
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* SetURIs may only be called while the sheet is 1) incomplete and 2)
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* has no rules in it
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*/
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inline void SetURIs(nsIURI* aSheetURI, nsIURI* aOriginalSheetURI,
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nsIURI* aBaseURI);
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/**
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* Whether the sheet is applicable. A sheet that is not applicable
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* should never be inserted into a style set. A sheet may not be
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* applicable for a variety of reasons including being disabled and
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* being incomplete.
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*/
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inline bool IsApplicable() const;
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inline bool HasRules() const;
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// style sheet owner info
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nsIDocument* GetOwningDocument() const { return mDocument; }
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inline void SetOwningDocument(nsIDocument* aDocument);
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nsINode* GetOwnerNode() const { return mOwningNode; }
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inline StyleSheet* GetParentSheet() const;
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inline void AppendStyleSheet(StyleSheet* aSheet);
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// Principal() never returns a null pointer.
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inline nsIPrincipal* Principal() const;
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/**
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* SetPrincipal should be called on all sheets before parsing into them.
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* This can only be called once with a non-null principal. Calling this with
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* a null pointer is allowed and is treated as a no-op.
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*/
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inline void SetPrincipal(nsIPrincipal* aPrincipal);
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// Get this style sheet's CORS mode
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inline CORSMode GetCORSMode() const;
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// Get this style sheet's Referrer Policy
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inline net::ReferrerPolicy GetReferrerPolicy() const;
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// Get this style sheet's integrity metadata
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inline void GetIntegrity(dom::SRIMetadata& aResult) const;
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inline size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const;
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#ifdef DEBUG
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inline void List(FILE* aOut = stdout, int32_t aIndex = 0) const;
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#endif
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// WebIDL StyleSheet API
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// The XPCOM GetType is fine for WebIDL.
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// The XPCOM GetHref is fine for WebIDL
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// GetOwnerNode is defined above.
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inline StyleSheet* GetParentStyleSheet() const;
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// The XPCOM GetTitle is fine for WebIDL.
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virtual nsMediaList* Media() = 0;
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bool Disabled() const { return mDisabled; }
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// The XPCOM SetDisabled is fine for WebIDL.
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// WebIDL CSSStyleSheet API
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virtual nsIDOMCSSRule* GetDOMOwnerRule() const = 0;
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dom::CSSRuleList* GetCssRules(nsIPrincipal& aSubjectPrincipal,
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ErrorResult& aRv);
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uint32_t InsertRule(const nsAString& aRule, uint32_t aIndex,
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nsIPrincipal& aSubjectPrincipal,
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ErrorResult& aRv);
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void DeleteRule(uint32_t aIndex,
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nsIPrincipal& aSubjectPrincipal,
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ErrorResult& aRv);
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// WebIDL miscellaneous bits
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inline dom::ParentObject GetParentObject() const;
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JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) final;
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// nsIDOMStyleSheet interface
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NS_IMETHOD GetType(nsAString& aType) final;
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NS_IMETHOD GetDisabled(bool* aDisabled) final;
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NS_IMETHOD SetDisabled(bool aDisabled) final;
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NS_IMETHOD GetOwnerNode(nsIDOMNode** aOwnerNode) final;
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NS_IMETHOD GetParentStyleSheet(nsIDOMStyleSheet** aParentStyleSheet) final;
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NS_IMETHOD GetHref(nsAString& aHref) final;
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NS_IMETHOD GetTitle(nsAString& aTitle) final;
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NS_IMETHOD GetMedia(nsIDOMMediaList** aMedia) final;
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// nsIDOMCSSStyleSheet
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NS_IMETHOD GetOwnerRule(nsIDOMCSSRule** aOwnerRule) final;
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NS_IMETHOD GetCssRules(nsIDOMCSSRuleList** aCssRules) final;
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NS_IMETHOD InsertRule(const nsAString& aRule, uint32_t aIndex,
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uint32_t* aReturn) final;
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NS_IMETHOD DeleteRule(uint32_t aIndex) final;
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// Changes to sheets should be inside of a WillDirty-DidDirty pair.
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// However, the calls do not need to be matched; it's ok to call
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// WillDirty and then make no change and skip the DidDirty call.
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inline void WillDirty();
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inline void DidDirty();
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private:
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// Get a handle to the various stylesheet bits which live on the 'inner' for
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// gecko stylesheets and live on the StyleSheet for Servo stylesheets.
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inline StyleSheetInfo& SheetInfo();
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inline const StyleSheetInfo& SheetInfo() const;
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// Check if the rules are available for read and write.
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// It does the security check as well as whether the rules have been
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// completely loaded. aRv will have an exception set if this function
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// returns false.
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bool AreRulesAvailable(nsIPrincipal& aSubjectPrincipal,
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ErrorResult& aRv);
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protected:
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// Return success if the subject principal subsumes the principal of our
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// inner, error otherwise. This will also succeed if the subject has
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// UniversalXPConnect or if access is allowed by CORS. In the latter case,
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// it will set the principal of the inner to the subject principal.
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void SubjectSubsumesInnerPrincipal(nsIPrincipal& aSubjectPrincipal,
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ErrorResult& aRv);
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nsString mTitle;
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nsIDocument* mDocument; // weak ref; parents maintain this for their children
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nsINode* mOwningNode; // weak ref
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// mParsingMode controls access to nonstandard style constructs that
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// are not safe for use on the public Web but necessary in UA sheets
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// and/or useful in user sheets.
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css::SheetParsingMode mParsingMode;
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const StyleBackendType mType;
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bool mDisabled;
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};
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} // namespace mozilla
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#endif // mozilla_StyleSheet_h
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