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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
64 lines
2.0 KiB
C++
64 lines
2.0 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_HTMLParagraphElement_h
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#define mozilla_dom_HTMLParagraphElement_h
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#include "mozilla/Attributes.h"
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#include "nsIDOMHTMLParagraphElement.h"
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#include "nsGenericHTMLElement.h"
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namespace mozilla {
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namespace dom {
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class HTMLParagraphElement final : public nsGenericHTMLElement,
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public nsIDOMHTMLParagraphElement
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{
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public:
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explicit HTMLParagraphElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
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: nsGenericHTMLElement(aNodeInfo)
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{
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}
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// nsISupports
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NS_DECL_ISUPPORTS_INHERITED
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// nsIDOMHTMLParagraphElement
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NS_DECL_NSIDOMHTMLPARAGRAPHELEMENT
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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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NS_IMETHOD_(bool) IsAttributeMapped(const nsIAtom* aAttribute) const override;
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virtual nsMapRuleToAttributesFunc GetAttributeMappingFunction() const 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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// WebIDL API
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// The XPCOM GetAlign is fine for our purposes
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void SetAlign(const nsAString& aValue, mozilla::ErrorResult& rv)
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{
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SetHTMLAttr(nsGkAtoms::align, aValue, rv);
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}
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protected:
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virtual ~HTMLParagraphElement();
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virtual JSObject* WrapNode(JSContext *aCx, JS::Handle<JSObject*> aGivenProto) override;
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private:
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static void MapAttributesIntoRule(const nsMappedAttributes* aAttributes,
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GenericSpecifiedValues* aGenericData);
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_HTMLParagraphElement_h
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