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-rw-r--r--layout/style/MediaList.cpp176
1 files changed, 176 insertions, 0 deletions
diff --git a/layout/style/MediaList.cpp b/layout/style/MediaList.cpp
new file mode 100644
index 0000000000..b4e477c901
--- /dev/null
+++ b/layout/style/MediaList.cpp
@@ -0,0 +1,176 @@
+/* -*- 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