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-rw-r--r--layout/style/URLExtraData.h87
1 files changed, 87 insertions, 0 deletions
diff --git a/layout/style/URLExtraData.h b/layout/style/URLExtraData.h
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+++ b/layout/style/URLExtraData.h
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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/. */
+
+/* thread-safe container of information for resolving url values */
+
+#ifndef mozilla_URLExtraData_h
+#define mozilla_URLExtraData_h
+
+#include <utility>
+
+#include "mozilla/StaticPtr.h"
+#include "mozilla/UserAgentStyleSheetID.h"
+#include "nsCOMPtr.h"
+#include "nsIPrincipal.h"
+#include "nsIReferrerInfo.h"
+#include "nsIURI.h"
+
+namespace mozilla {
+
+struct URLExtraData {
+ static bool ChromeRulesEnabled(nsIURI* aURI);
+
+ URLExtraData(already_AddRefed<nsIURI> aBaseURI,
+ already_AddRefed<nsIReferrerInfo> aReferrerInfo,
+ already_AddRefed<nsIPrincipal> aPrincipal)
+ : mBaseURI(std::move(aBaseURI)),
+ mReferrerInfo(std::move(aReferrerInfo)),
+ mPrincipal(std::move(aPrincipal)) {
+ MOZ_ASSERT(mBaseURI);
+ MOZ_ASSERT(mPrincipal);
+ MOZ_ASSERT(mReferrerInfo);
+ // When we hold the URI data of a style sheet, referrer is always
+ // equal to the sheet URI.
+ nsCOMPtr<nsIURI> referrer = mReferrerInfo->GetOriginalReferrer();
+ mChromeRulesEnabled = ChromeRulesEnabled(referrer);
+ }
+
+ URLExtraData(nsIURI* aBaseURI, nsIReferrerInfo* aReferrerInfo,
+ nsIPrincipal* aPrincipal)
+ : URLExtraData(do_AddRef(aBaseURI), do_AddRef(aReferrerInfo),
+ do_AddRef(aPrincipal)) {}
+
+ NS_INLINE_DECL_THREADSAFE_REFCOUNTING(URLExtraData)
+
+ nsIURI* BaseURI() const { return mBaseURI; }
+ nsIReferrerInfo* ReferrerInfo() const { return mReferrerInfo; }
+ nsIPrincipal* Principal() const { return mPrincipal; }
+
+ bool ChromeRulesEnabled() const { return mChromeRulesEnabled; }
+
+ static URLExtraData* Dummy() {
+ MOZ_ASSERT(sDummy);
+ return sDummy;
+ }
+
+ static URLExtraData* DummyChrome() {
+ MOZ_ASSERT(sDummyChrome);
+ return sDummyChrome;
+ }
+
+ static void Init();
+ static void Shutdown();
+
+ // URLExtraData objects that shared style sheets use a sheet ID index to
+ // refer to.
+ static StaticRefPtr<URLExtraData>
+ sShared[size_t(UserAgentStyleSheetID::Count)];
+
+ private:
+ ~URLExtraData();
+
+ nsCOMPtr<nsIURI> mBaseURI;
+ nsCOMPtr<nsIReferrerInfo> mReferrerInfo;
+ nsCOMPtr<nsIPrincipal> mPrincipal;
+
+ bool mChromeRulesEnabled;
+
+ static StaticRefPtr<URLExtraData> sDummy;
+ static StaticRefPtr<URLExtraData> sDummyChrome;
+};
+
+} // namespace mozilla
+
+#endif // mozilla_URLExtraData_h