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