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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/. */
/* base class for representation of media lists */
#include "mozilla/dom/MediaList.h"
#include "mozAutoDocUpdate.h"
#include "mozilla/dom/Document.h"
#include "mozilla/dom/MediaListBinding.h"
#include "mozilla/ServoBindings.h"
#include "mozilla/ServoStyleSet.h"
#include "mozilla/StyleSheetInlines.h"
namespace mozilla::dom {
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(MediaList)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(MediaList)
NS_IMPL_CYCLE_COLLECTING_RELEASE(MediaList)
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_0(MediaList)
JSObject* MediaList::WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return MediaList_Binding::Wrap(aCx, this, aGivenProto);
}
void MediaList::SetStyleSheet(StyleSheet* aSheet) {
MOZ_ASSERT(aSheet == mStyleSheet || !aSheet || !mStyleSheet,
"Multiple style sheets competing for one media list");
mStyleSheet = aSheet;
}
nsISupports* MediaList::GetParentObject() const { return mStyleSheet; }
template <typename Func>
void MediaList::DoMediaChange(Func aCallback, ErrorResult& aRv) {
if (IsReadOnly()) {
return;
}
if (mStyleSheet) {
mStyleSheet->WillDirty();
}
aCallback(aRv);
if (aRv.Failed()) {
return;
}
if (mStyleSheet) {
// FIXME(emilio): We should discern between "owned by a rule" (as in @media)
// and "owned by a sheet" (as in <style media>), and then pass something
// meaningful here.
mStyleSheet->RuleChanged(nullptr, StyleRuleChangeKind::Generic);
}
}
already_AddRefed<MediaList> MediaList::Clone() {
RefPtr<MediaList> clone =
new MediaList(Servo_MediaList_DeepClone(mRawList).Consume());
return clone.forget();
}
MediaList::MediaList() : mRawList(Servo_MediaList_Create().Consume()) {}
MediaList::MediaList(const nsACString& aMedia, CallerType aCallerType)
: MediaList() {
SetTextInternal(aMedia, aCallerType);
}
void MediaList::GetText(nsACString& aMediaText) const {
Servo_MediaList_GetText(mRawList, &aMediaText);
}
/* static */
already_AddRefed<MediaList> MediaList::Create(const nsACString& aMedia,
CallerType aCallerType) {
return do_AddRef(new MediaList(aMedia, aCallerType));
}
void MediaList::SetText(const nsACString& aMediaText) {
if (IsReadOnly()) {
return;
}
SetTextInternal(aMediaText, CallerType::NonSystem);
}
void MediaList::SetTextInternal(const nsACString& aMediaText,
CallerType aCallerType) {
Servo_MediaList_SetText(mRawList, &aMediaText, aCallerType);
}
uint32_t MediaList::Length() const {
return Servo_MediaList_GetLength(mRawList);
}
bool MediaList::IsViewportDependent() const {
return Servo_MediaList_IsViewportDependent(mRawList);
}
void MediaList::IndexedGetter(uint32_t aIndex, bool& aFound,
nsACString& aReturn) const {
aFound = Servo_MediaList_GetMediumAt(mRawList, aIndex, &aReturn);
if (!aFound) {
aReturn.SetIsVoid(true);
}
}
void MediaList::Delete(const nsACString& aOldMedium, ErrorResult& aRv) {
MOZ_ASSERT(!IsReadOnly());
if (Servo_MediaList_DeleteMedium(mRawList, &aOldMedium)) {
return;
}
aRv.ThrowNotFoundError("Medium not in list");
}
bool MediaList::Matches(const Document& aDocument) const {
const auto* rawData =
aDocument.StyleSetForPresShellOrMediaQueryEvaluation()->RawData();
MOZ_ASSERT(rawData, "The per doc data should be valid!");
return Servo_MediaList_Matches(mRawList, rawData);
}
void MediaList::Append(const nsACString& aNewMedium, ErrorResult& aRv) {
MOZ_ASSERT(!IsReadOnly());
if (aNewMedium.IsEmpty()) {
// XXXbz per spec there should not be an exception here, as far as
// I can tell...
aRv.ThrowNotFoundError("Empty medium");
return;
}
Servo_MediaList_AppendMedium(mRawList, &aNewMedium);
}
void MediaList::SetMediaText(const nsACString& aMediaText) {
DoMediaChange([&](ErrorResult& aRv) { SetText(aMediaText); }, IgnoreErrors());
}
void MediaList::Item(uint32_t aIndex, nsACString& aReturn) {
bool dummy;
IndexedGetter(aIndex, dummy, aReturn);
}
void MediaList::DeleteMedium(const nsACString& aOldMedium, ErrorResult& aRv) {
DoMediaChange([&](ErrorResult& aRv) { Delete(aOldMedium, aRv); }, aRv);
}
void MediaList::AppendMedium(const nsACString& aNewMedium, ErrorResult& aRv) {
DoMediaChange([&](ErrorResult& aRv) { Append(aNewMedium, aRv); }, aRv);
}
MOZ_DEFINE_MALLOC_SIZE_OF(ServoMediaListMallocSizeOf)
MOZ_DEFINE_MALLOC_ENCLOSING_SIZE_OF(ServoMediaListMallocEnclosingSizeOf)
size_t MediaList::SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const {
size_t n = 0;
n += Servo_MediaList_SizeOfIncludingThis(ServoMediaListMallocSizeOf,
ServoMediaListMallocEnclosingSizeOf,
mRawList);
return n;
}
bool MediaList::IsReadOnly() const {
return mStyleSheet && mStyleSheet->IsReadOnly();
}
} // namespace mozilla::dom
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