StyleSheetInfo.h - mozsearch

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* 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_StyleSheetInfo_h

#define mozilla_StyleSheetInfo_h

#include "mozilla/css/SheetParsingMode.h"

#include "mozilla/dom/SRIMetadata.h"

#include "mozilla/CORSMode.h"

#include "nsIReferrerInfo.h"

class nsIPrincipal;

class nsIURI;

namespace mozilla {

class StyleSheet;

struct StyleUseCounters;

struct StyleStylesheetContents;

struct URLExtraData;

/**

 * Struct for data common to CSSStyleSheetInner and ServoStyleSheet.

*/

struct StyleSheetInfo final {

  using ReferrerPolicy = dom::ReferrerPolicy;

  StyleSheetInfo(CORSMode aCORSMode, const dom::SRIMetadata& aIntegrity,

                 css::SheetParsingMode aParsingMode);

  // FIXME(emilio): aCopy should be const.

  StyleSheetInfo(StyleSheetInfo& aCopy, StyleSheet* aPrimarySheet);

  ~StyleSheetInfo();

  StyleSheetInfo* CloneFor(StyleSheet* aPrimarySheet);

  void AddSheet(StyleSheet* aSheet);

  void RemoveSheet(StyleSheet* aSheet);

  size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const;

  // FIXME(emilio): most of this struct should be const, then we can remove the

  // duplication with the UrlExtraData member and such.

  nsCOMPtr<nsIURI> mSheetURI;          // for error reports, etc.

  nsCOMPtr<nsIURI> mOriginalSheetURI;  // for GetHref.  Can be null.

  nsCOMPtr<nsIURI> mBaseURI;           // for resolving relative URIs

  nsCOMPtr<nsIPrincipal> mPrincipal;

  const CORSMode mCORSMode;

  // The ReferrerInfo of a stylesheet is used for its child sheets and loads

  // come from this stylesheet, so it is stored here.

  nsCOMPtr<nsIReferrerInfo> mReferrerInfo;

  dom::SRIMetadata mIntegrity;

  // Pointer to the list of child sheets. This is all fundamentally broken,

  // because each of the child sheets has a unique parent... We can only hope

  // (and currently this is the case) that any time page JS can get its hands on

  // a child sheet that means we've already ensured unique infos throughout its

  // parent chain and things are good.

  nsTArray<RefPtr<StyleSheet>> mChildren;

  AutoTArray<StyleSheet*, 8> mSheets;

  // If a SourceMap or X-SourceMap response header is seen, this is

  // the value.  If both are seen, SourceMap is preferred.  If neither

  // is seen, this will be an empty string.

  nsCString mSourceMapURL;

  RefPtr<const StyleStylesheetContents> mContents;

  UniquePtr<StyleUseCounters> mUseCounters;

  // XXX We already have mSheetURI, mBaseURI, and mPrincipal.

//

  // Can we somehow replace them with URLExtraData directly? The issue

  // is currently URLExtraData is immutable, but URIs in StyleSheetInfo

  // seems to be mutable, so we probably cannot set them altogether.

  // Also, this is mostly a duplicate reference of the same url data

  // inside RawServoStyleSheet. We may want to just use that instead.

  RefPtr<URLExtraData> mURLData;

#ifdef DEBUG

  bool mPrincipalSet = false;

#endif

};

}  // namespace mozilla

#endif  // mozilla_StyleSheetInfo_h