forked from mirrors/gecko-dev
137 lines
3.1 KiB
C++
137 lines
3.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* base class for representation of media lists */
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#include "mozilla/dom/MediaList.h"
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#include "mozAutoDocUpdate.h"
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#include "mozilla/dom/MediaListBinding.h"
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#include "mozilla/ServoMediaList.h"
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#include "mozilla/StyleSheetInlines.h"
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#include "nsCSSParser.h"
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#include "nsMediaList.h"
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namespace mozilla {
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namespace dom {
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(MediaList)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(nsIDOMMediaList)
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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NS_IMPL_CYCLE_COLLECTING_ADDREF(MediaList)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(MediaList)
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NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_0(MediaList)
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JSObject*
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MediaList::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return MediaListBinding::Wrap(aCx, this, aGivenProto);
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}
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void
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MediaList::SetStyleSheet(StyleSheet* aSheet)
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{
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MOZ_ASSERT(aSheet == mStyleSheet || !aSheet || !mStyleSheet,
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"Multiple style sheets competing for one media list");
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mStyleSheet = aSheet;
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}
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template<typename Func>
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nsresult
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MediaList::DoMediaChange(Func aCallback)
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{
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nsCOMPtr<nsIDocument> doc;
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if (mStyleSheet) {
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doc = mStyleSheet->GetAssociatedDocument();
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}
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mozAutoDocUpdate updateBatch(doc, UPDATE_STYLE, true);
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if (mStyleSheet) {
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mStyleSheet->WillDirty();
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}
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nsresult rv = aCallback();
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if (NS_FAILED(rv)) {
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return rv;
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}
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if (mStyleSheet) {
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mStyleSheet->DidDirty();
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}
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/* XXXldb Pass something meaningful? */
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if (doc) {
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doc->StyleRuleChanged(mStyleSheet, nullptr);
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}
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return rv;
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}
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/* static */ already_AddRefed<MediaList>
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MediaList::Create(
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StyleBackendType aBackendType,
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const nsAString& aMedia,
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CallerType aCallerType)
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{
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if (aBackendType == StyleBackendType::Servo) {
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RefPtr<ServoMediaList> mediaList = new ServoMediaList(aMedia, aCallerType);
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return mediaList.forget();
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}
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nsCSSParser parser;
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RefPtr<nsMediaList> mediaList = new nsMediaList();
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parser.ParseMediaList(aMedia, nullptr, 0, mediaList, aCallerType);
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return mediaList.forget();
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}
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NS_IMETHODIMP
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MediaList::GetMediaText(nsAString& aMediaText)
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{
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GetText(aMediaText);
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return NS_OK;
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}
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NS_IMETHODIMP
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MediaList::SetMediaText(const nsAString& aMediaText)
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{
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return DoMediaChange([&]() {
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SetText(aMediaText);
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return NS_OK;
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});
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}
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NS_IMETHODIMP
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MediaList::GetLength(uint32_t* aLength)
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{
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NS_ENSURE_ARG_POINTER(aLength);
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*aLength = Length();
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return NS_OK;
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}
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NS_IMETHODIMP
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MediaList::Item(uint32_t aIndex, nsAString& aReturn)
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{
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bool dummy;
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IndexedGetter(aIndex, dummy, aReturn);
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return NS_OK;
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}
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NS_IMETHODIMP
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MediaList::DeleteMedium(const nsAString& aOldMedium)
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{
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return DoMediaChange([&]() { return Delete(aOldMedium); });
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}
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NS_IMETHODIMP
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MediaList::AppendMedium(const nsAString& aNewMedium)
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{
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return DoMediaChange([&]() { return Append(aNewMedium); });
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}
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} // namespace dom
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} // namespace mozilla
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