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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
114 lines
4.2 KiB
C++
114 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_SVGStyleElement_h
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#define mozilla_dom_SVGStyleElement_h
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#include "mozilla/Attributes.h"
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#include "nsSVGElement.h"
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#include "nsStyleLinkElement.h"
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#include "nsStubMutationObserver.h"
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nsresult NS_NewSVGStyleElement(nsIContent **aResult,
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already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
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typedef nsSVGElement SVGStyleElementBase;
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namespace mozilla {
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namespace dom {
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class SVGStyleElement final : public SVGStyleElementBase,
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public nsStyleLinkElement,
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public nsStubMutationObserver
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{
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protected:
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friend nsresult (::NS_NewSVGStyleElement(nsIContent **aResult,
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already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo));
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explicit SVGStyleElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo);
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~SVGStyleElement();
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virtual JSObject* WrapNode(JSContext *aCx, JS::Handle<JSObject*> aGivenProto) override;
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public:
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(SVGStyleElement,
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SVGStyleElementBase)
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// nsIContent
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virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
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nsIContent* aBindingParent,
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bool aCompileEventHandlers) override;
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virtual void UnbindFromTree(bool aDeep = true,
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bool aNullParent = true) override;
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nsresult SetAttr(int32_t aNameSpaceID, nsIAtom* aName,
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const nsAString& aValue, bool aNotify)
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{
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return SetAttr(aNameSpaceID, aName, nullptr, aValue, aNotify);
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}
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virtual nsresult SetAttr(int32_t aNameSpaceID, nsIAtom* aName,
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nsIAtom* aPrefix, const nsAString& aValue,
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bool aNotify) override;
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virtual nsresult UnsetAttr(int32_t aNameSpaceID, nsIAtom* aAttribute,
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bool aNotify) override;
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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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virtual nsresult Clone(mozilla::dom::NodeInfo *aNodeInfo, nsINode **aResult,
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bool aPreallocateChildren) const override;
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// nsIMutationObserver
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NS_DECL_NSIMUTATIONOBSERVER_CHARACTERDATACHANGED
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NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
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NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
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NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
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// WebIDL
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void GetXmlspace(nsAString & aXmlspace);
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void SetXmlspace(const nsAString & aXmlspace, ErrorResult& rv);
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void GetMedia(nsAString & aMedia);
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void SetMedia(const nsAString& aMedia, ErrorResult& rv);
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bool Scoped() const;
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void SetScoped(bool aScoped, ErrorResult& rv);
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void GetType(nsAString & aType);
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void SetType(const nsAString& aType, ErrorResult& rv);
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void GetTitle(nsAString & aTitle);
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void SetTitle(const nsAString& aTitle, ErrorResult& rv);
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protected:
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// Dummy init method to make the NS_IMPL_NS_NEW_SVG_ELEMENT and
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// NS_IMPL_ELEMENT_CLONE_WITH_INIT usable with this class. This should be
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// completely optimized away.
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inline nsresult Init()
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{
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return NS_OK;
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}
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// nsStyleLinkElement overrides
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already_AddRefed<nsIURI> GetStyleSheetURL(bool* aIsInline) override;
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void GetStyleSheetInfo(nsAString& aTitle,
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nsAString& aType,
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nsAString& aMedia,
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bool* aIsScoped,
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bool* aIsAlternate) override;
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virtual CORSMode GetCORSMode() const override;
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/**
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* Common method to call from the various mutation observer methods.
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* aContent is a content node that's either the one that changed or its
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* parent; we should only respond to the change if aContent is non-anonymous.
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*/
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void ContentChanged(nsIContent* aContent);
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_SVGStyleElement_h
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