1 files changed, 210 insertions, 0 deletions
diff --git a/layout/style/StyleSheet.h b/layout/style/StyleSheet.h
new file mode 100644
index 000000000..f21a6d648
--- /dev/null
+++ b/layout/style/StyleSheet.h
@@ -0,0 +1,210 @@
+/* -*- 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_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
+  nsIDocument* GetOwningDocument() const { return mDocument; }
+  inline void SetOwningDocument(nsIDocument* aDocument);
+  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);
+
+  // 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;
+};
+
+} // namespace mozilla
+
+#endif // mozilla_StyleSheet_h