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7fdb378650
Currently, attribute and child arrays (implemented in dom/base/nsAttrAndChildArray.h) start out empty. When cloning, the array ends up being resized multiple times in order to add the attributes and children that are being cloned from the original node. This would be quicker if the array was initialized to the correct size in the first place so that resizes are not necessary. However, preallocating space for children is only necessary when performing a deep clone. Therefore, an additional parameter is being added to the Clone, CopyInnerTo, and CloneDocHelper methods to indicate whether preallocation of children should happen. Attributes are copied either way, so that part of the array is preallocated in both cases. MozReview-Commit-ID: 3iVezeAKXnI --HG-- extra : rebase_source : 9c3deec6d7aafd6411044d623d4863637b45fd58
148 lines
4.2 KiB
C++
148 lines
4.2 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 "nsIDOMHTMLElement.h"
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#include "nsIDOMEventTarget.h"
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#include "nsIHttpChannel.h"
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class nsIContent;
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class nsIDocument;
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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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{
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public:
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explicit HTMLTrackElement(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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{
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SetHTMLAttr(nsGkAtoms::kind, aKind, aError);
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}
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void GetSrc(DOMString& aSrc) const
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{
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GetHTMLURIAttr(nsGkAtoms::src, aSrc);
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}
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void SetSrc(const nsAString& aSrc, ErrorResult& aError);
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void GetSrclang(DOMString& aSrclang) const
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{
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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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{
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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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{
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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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{
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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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{
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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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{
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SetHTMLAttr(nsGkAtoms::label, aLabel, aError);
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}
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bool Default() const
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{
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return GetBoolAttr(nsGkAtoms::_default);
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}
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void SetDefault(bool aDefault, ErrorResult& aError)
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{
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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(mozilla::dom::NodeInfo* aNodeInfo, nsINode** aResult,
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bool aPreallocateChildren) 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,
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nsIAtom* aAttribute,
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const nsAString& aValue,
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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(nsIDocument* aDocument,
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nsIContent* aParent,
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nsIContent* aBindingParent,
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bool aCompileEventHandlers) override;
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virtual void UnbindFromTree(bool aDeep, bool aNullParent) override;
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void DispatchTrackRunnable(const nsString& aEventName);
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void DispatchTrustedEvent(const nsAString& aName);
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void DropChannel();
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void NotifyShutdown();
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protected:
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virtual ~HTMLTrackElement();
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virtual JSObject* WrapNode(JSContext* aCx, 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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// 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();
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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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void DispatchLoadResource();
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bool mLoadResourceDispatched;
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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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