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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 */
/* 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 {
// 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);
MediaList(const nsACString& aMedia, CallerType);
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;
template <typename Func>
inline void DoMediaChange(Func aCallback, ErrorResult& aRv);
RefPtr<StyleLockedMediaList> mRawList;
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_MediaList_h