зеркало из https://github.com/mozilla/gecko-dev.git
137 строки
4.4 KiB
C++
137 строки
4.4 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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#ifndef mozilla_dom_HTMLTrackElement_h
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#define mozilla_dom_HTMLTrackElement_h
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#include "mozilla/Attributes.h"
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#include "mozilla/dom/HTMLMediaElement.h"
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#include "mozilla/dom/TextTrack.h"
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#include "nsCycleCollectionParticipant.h"
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#include "nsGenericHTMLElement.h"
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#include "nsGkAtoms.h"
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#include "nsIHttpChannel.h"
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class nsIContent;
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namespace mozilla {
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namespace dom {
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class WebVTTListener;
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class WindowDestroyObserver;
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class HTMLTrackElement final : public nsGenericHTMLElement {
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public:
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explicit HTMLTrackElement(
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already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
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// nsISupports
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(HTMLTrackElement,
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nsGenericHTMLElement)
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// HTMLTrackElement WebIDL
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void GetKind(DOMString& aKind) const;
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void SetKind(const nsAString& aKind, ErrorResult& aError) {
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SetHTMLAttr(nsGkAtoms::kind, aKind, aError);
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}
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void GetSrc(DOMString& aSrc) const { GetHTMLURIAttr(nsGkAtoms::src, aSrc); }
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void SetSrc(const nsAString& aSrc, ErrorResult& aError);
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void GetSrclang(DOMString& aSrclang) const {
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GetHTMLAttr(nsGkAtoms::srclang, aSrclang);
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}
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void GetSrclang(nsAString& aSrclang) const {
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GetHTMLAttr(nsGkAtoms::srclang, aSrclang);
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}
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void SetSrclang(const nsAString& aSrclang, ErrorResult& aError) {
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SetHTMLAttr(nsGkAtoms::srclang, aSrclang, aError);
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}
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void GetLabel(DOMString& aLabel) const {
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GetHTMLAttr(nsGkAtoms::label, aLabel);
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}
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void GetLabel(nsAString& aLabel) const {
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GetHTMLAttr(nsGkAtoms::label, aLabel);
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}
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void SetLabel(const nsAString& aLabel, ErrorResult& aError) {
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SetHTMLAttr(nsGkAtoms::label, aLabel, aError);
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}
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bool Default() const { return GetBoolAttr(nsGkAtoms::_default); }
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void SetDefault(bool aDefault, ErrorResult& aError) {
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SetHTMLBoolAttr(nsGkAtoms::_default, aDefault, aError);
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}
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uint16_t ReadyState() const;
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void SetReadyState(uint16_t aReadyState);
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TextTrack* GetTrack();
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virtual nsresult Clone(dom::NodeInfo*, nsINode** aResult) const override;
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// Override ParseAttribute() to convert kind strings to enum values.
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virtual bool ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
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const nsAString& aValue,
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nsIPrincipal* aMaybeScriptedPrincipal,
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nsAttrValue& aResult) override;
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// Override BindToTree() so that we can trigger a load when we become
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// the child of a media element.
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virtual nsresult BindToTree(BindContext&, nsINode& aParent) override;
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virtual void UnbindFromTree(bool aNullParent) override;
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virtual nsresult AfterSetAttr(int32_t aNameSpaceID, nsAtom* aName,
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const nsAttrValue* aValue,
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const nsAttrValue* aOldValue,
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nsIPrincipal* aMaybeScriptedPrincipal,
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bool aNotify) override;
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void DispatchTrackRunnable(const nsString& aEventName);
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void DispatchTrustedEvent(const nsAString& aName);
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void DispatchTestEvent(const nsAString& aName);
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void CancelChannelAndListener();
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// Only load resource for the non-disabled track with media parent.
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void MaybeDispatchLoadResource();
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protected:
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virtual ~HTMLTrackElement();
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virtual JSObject* WrapNode(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) override;
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void OnChannelRedirect(nsIChannel* aChannel, nsIChannel* aNewChannel,
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uint32_t aFlags);
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friend class TextTrackCue;
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friend class WebVTTListener;
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RefPtr<TextTrack> mTrack;
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nsCOMPtr<nsIChannel> mChannel;
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RefPtr<HTMLMediaElement> mMediaParent;
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RefPtr<WebVTTListener> mListener;
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void CreateTextTrack();
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private:
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// Open a new channel to the HTMLTrackElement's src attribute and call
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// mListener's LoadResource().
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void LoadResource(RefPtr<WebVTTListener>&& aWebVTTListener);
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bool mLoadResourceDispatched;
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void MaybeClearAllCues();
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RefPtr<WindowDestroyObserver> mWindowDestroyObserver;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_HTMLTrackElement_h
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