1 files changed, 101 insertions, 0 deletions
diff --git a/layout/style/MediaList.h b/layout/style/MediaList.h
new file mode 100644
index 0000000000..afa2419534
--- /dev/null
+++ b/layout/style/MediaList.h
@@ -0,0 +1,101 @@
+/* -*- 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/. */
+
+/* base class for representation of media lists */
+
+#ifndef mozilla_dom_MediaList_h
+#define mozilla_dom_MediaList_h
+
+#include "mozilla/dom/BindingDeclarations.h"
+#include "mozilla/ServoBindingTypes.h"
+#include "mozilla/ServoUtils.h"
+
+#include "nsWrapperCache.h"
+
+class nsMediaQueryResultCacheKey;
+
+namespace mozilla {
+class ErrorResult;
+class StyleSheet;
+
+namespace dom {
+
+class Document;
+
+class MediaList final : public nsISupports, public nsWrapperCache {
+ public:
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(MediaList)
+
+  // Needed for CSSOM, but please don't use it outside of that :)
+  explicit MediaList(already_AddRefed<StyleLockedMediaList> aRawList)
+      : mRawList(aRawList) {}
+
+  static already_AddRefed<MediaList> Create(
+      const nsACString& aMedia, CallerType aCallerType = CallerType::NonSystem);
+
+  already_AddRefed<MediaList> Clone();
+
+  JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) final;
+  nsISupports* GetParentObject() const;
+
+  void GetText(nsACString&) const;
+  void SetText(const nsACString&);
+  bool Matches(const Document&) const;
+  bool IsViewportDependent() const;
+
+  void SetStyleSheet(StyleSheet* aSheet);
+  void SetRawAfterClone(RefPtr<StyleLockedMediaList> aRaw) {
+    mRawList = std::move(aRaw);
+  }
+
+  // WebIDL
+  void GetMediaText(nsACString& aMediaText) const {
+    return GetText(aMediaText);
+  }
+  void SetMediaText(const nsACString&);
+  uint32_t Length() const;
+  void IndexedGetter(uint32_t aIndex, bool& aFound, nsACString&) const;
+  void Item(uint32_t aIndex, nsACString&);
+  void DeleteMedium(const nsACString&, ErrorResult&);
+  void AppendMedium(const nsACString&, ErrorResult&);
+
+  size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const;
+
+  size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const {
+    return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
+  }
+
+ protected:
+  MediaList(const nsACString& aMedia, CallerType);
+  MediaList();
+
+  void SetTextInternal(const nsACString& aMediaText, CallerType);
+
+  void Delete(const nsACString& aOldMedium, ErrorResult& aRv);
+  void Append(const nsACString& aNewMedium, ErrorResult& aRv);
+
+  ~MediaList() {
+    MOZ_ASSERT(!mStyleSheet, "Backpointer should have been cleared");
+  }
+
+  bool IsReadOnly() const;
+
+  // not refcounted; sheet will let us know when it goes away
+  // mStyleSheet is the sheet that needs to be dirtied when this
+  // medialist changes
+  StyleSheet* mStyleSheet = nullptr;
+
+ private:
+  template <typename Func>
+  inline void DoMediaChange(Func aCallback, ErrorResult& aRv);
+  RefPtr<StyleLockedMediaList> mRawList;
+};
+
+}  // namespace dom
+}  // namespace mozilla
+
+#endif  // mozilla_dom_MediaList_h