layout/style/StyleSheetInfo.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_StyleSheetInfo_h
   8 #define mozilla_StyleSheetInfo_h
   9
  10 #include "mozilla/css/SheetParsingMode.h"
  11 #include "mozilla/dom/SRIMetadata.h"
  12 #include "mozilla/CORSMode.h"
  13
  14 #include "nsIReferrerInfo.h"
  15
  16 class nsIPrincipal;
  17 class nsIURI;
  18
  19 namespace mozilla {
  20 class StyleSheet;
  21 struct StyleUseCounters;
  22 struct StyleStylesheetContents;
  23 struct URLExtraData;
  24
  25 /**
  26  * Struct for data common to CSSStyleSheetInner and ServoStyleSheet.
  27  */
  28 struct StyleSheetInfo final {
  29   using ReferrerPolicy = dom::ReferrerPolicy;
  30
  31   StyleSheetInfo(CORSMode aCORSMode, const dom::SRIMetadata& aIntegrity,
  32                  css::SheetParsingMode aParsingMode);
  33
  34   // FIXME(emilio): aCopy should be const.
  35   StyleSheetInfo(StyleSheetInfo& aCopy, StyleSheet* aPrimarySheet);
  36
  37   ~StyleSheetInfo();
  38
  39   StyleSheetInfo* CloneFor(StyleSheet* aPrimarySheet);
  40
  41   void AddSheet(StyleSheet* aSheet);
  42   void RemoveSheet(StyleSheet* aSheet);
  43
  44   size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const;
  45
  46   // FIXME(emilio): most of this struct should be const, then we can remove the
  47   // duplication with the UrlExtraData member and such.
  48   nsCOMPtr<nsIURI> mSheetURI;          // for error reports, etc.
  49   nsCOMPtr<nsIURI> mOriginalSheetURI;  // for GetHref.  Can be null.
  50   nsCOMPtr<nsIURI> mBaseURI;           // for resolving relative URIs
  51   nsCOMPtr<nsIPrincipal> mPrincipal;
  52   const CORSMode mCORSMode;
  53   // The ReferrerInfo of a stylesheet is used for its child sheets and loads
  54   // come from this stylesheet, so it is stored here.
  55   nsCOMPtr<nsIReferrerInfo> mReferrerInfo;
  56   dom::SRIMetadata mIntegrity;
  57
  58   // Pointer to the list of child sheets. This is all fundamentally broken,
  59   // because each of the child sheets has a unique parent... We can only hope
  60   // (and currently this is the case) that any time page JS can get its hands on
  61   // a child sheet that means we've already ensured unique infos throughout its
  62   // parent chain and things are good.
  63   nsTArray<RefPtr<StyleSheet>> mChildren;
  64
  65   AutoTArray<StyleSheet*, 8> mSheets;
  66
  67   // If a SourceMap or X-SourceMap response header is seen, this is
  68   // the value.  If both are seen, SourceMap is preferred.  If neither
  69   // is seen, this will be an empty string.
  70   nsCString mSourceMapURL;
  71
  72   RefPtr<const StyleStylesheetContents> mContents;
  73
  74   UniquePtr<StyleUseCounters> mUseCounters;
  75
  76   // XXX We already have mSheetURI, mBaseURI, and mPrincipal.
  77   //
  78   // Can we somehow replace them with URLExtraData directly? The issue
  79   // is currently URLExtraData is immutable, but URIs in StyleSheetInfo
  80   // seems to be mutable, so we probably cannot set them altogether.
  81   // Also, this is mostly a duplicate reference of the same url data
  82   // inside RawServoStyleSheet. We may want to just use that instead.
  83   RefPtr<URLExtraData> mURLData;
  84
  85 #ifdef DEBUG
  86   bool mPrincipalSet = false;
  87 #endif
  88 };
  89
  90 }  // namespace mozilla
  91
  92 #endif  // mozilla_StyleSheetInfo_h