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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
104 lines
3.4 KiB
C++
104 lines
3.4 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_HTMLLegendElement_h
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#define mozilla_dom_HTMLLegendElement_h
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#include "mozilla/Attributes.h"
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#include "nsGenericHTMLElement.h"
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#include "mozilla/dom/HTMLFormElement.h"
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namespace mozilla {
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namespace dom {
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class HTMLLegendElement final : public nsGenericHTMLElement
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{
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public:
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explicit HTMLLegendElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
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: nsGenericHTMLElement(aNodeInfo)
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{
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}
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NS_IMPL_FROMCONTENT_HTML_WITH_TAG(HTMLLegendElement, legend)
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using nsGenericHTMLElement::Focus;
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virtual void Focus(ErrorResult& aError) override;
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virtual bool PerformAccesskey(bool aKeyCausesActivation,
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bool aIsTrustedEvent) override;
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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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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 nsChangeHint GetAttributeChangeHint(const nsIAtom* aAttribute,
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int32_t aModType) const 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 nsresult Clone(mozilla::dom::NodeInfo* aNodeInfo, nsINode** aResult,
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bool aPreallocateChildren) const override;
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Element* GetFormElement() const
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{
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nsCOMPtr<nsIFormControl> fieldsetControl = do_QueryInterface(GetFieldSet());
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return fieldsetControl ? fieldsetControl->GetFormElement() : nullptr;
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}
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/**
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* WebIDL Interface
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*/
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already_AddRefed<HTMLFormElement> GetForm();
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void GetAlign(DOMString& aAlign)
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{
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GetHTMLAttr(nsGkAtoms::align, aAlign);
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}
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void SetAlign(const nsAString& aAlign, ErrorResult& aError)
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{
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SetHTMLAttr(nsGkAtoms::align, aAlign, aError);
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}
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nsINode* GetScopeChainParent() const override
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{
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Element* form = GetFormElement();
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return form ? form : nsGenericHTMLElement::GetScopeChainParent();
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}
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protected:
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virtual ~HTMLLegendElement();
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virtual JSObject* WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
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/**
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* Get the fieldset content element that contains this legend.
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* Returns null if there is no fieldset containing this legend.
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*/
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nsIContent* GetFieldSet() const;
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};
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} // namespace dom
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} // namespace mozilla
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#endif /* mozilla_dom_HTMLLegendElement_h */
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