forked from mirrors/gecko-dev
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
151 lines
4.7 KiB
C++
151 lines
4.7 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_HTMLFieldSetElement_h
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#define mozilla_dom_HTMLFieldSetElement_h
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#include "mozilla/Attributes.h"
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#include "nsGenericHTMLElement.h"
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#include "nsIDOMHTMLFieldSetElement.h"
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#include "nsIConstraintValidation.h"
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#include "mozilla/dom/HTMLFormElement.h"
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#include "mozilla/dom/ValidityState.h"
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namespace mozilla {
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class EventChainPreVisitor;
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namespace dom {
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class HTMLFieldSetElement final : public nsGenericHTMLFormElement,
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public nsIDOMHTMLFieldSetElement,
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public nsIConstraintValidation
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{
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public:
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using nsGenericHTMLFormElement::GetForm;
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using nsIConstraintValidation::Validity;
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using nsIConstraintValidation::CheckValidity;
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using nsIConstraintValidation::ReportValidity;
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using nsIConstraintValidation::GetValidationMessage;
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explicit HTMLFieldSetElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo);
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NS_IMPL_FROMCONTENT_HTML_WITH_TAG(HTMLFieldSetElement, fieldset)
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// nsISupports
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NS_DECL_ISUPPORTS_INHERITED
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// nsIDOMHTMLFieldSetElement
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NS_DECL_NSIDOMHTMLFIELDSETELEMENT
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// nsIContent
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virtual nsresult GetEventTargetParent(
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EventChainPreVisitor& aVisitor) override;
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virtual nsresult AfterSetAttr(int32_t aNameSpaceID, nsIAtom* aName,
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const nsAttrValue* aValue, bool aNotify) override;
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virtual nsresult InsertChildAt(nsIContent* aChild, uint32_t aIndex,
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bool aNotify) override;
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virtual void RemoveChildAt(uint32_t aIndex, bool aNotify) override;
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// nsIFormControl
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NS_IMETHOD Reset() override;
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NS_IMETHOD SubmitNamesValues(HTMLFormSubmission* aFormSubmission) override;
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virtual bool IsDisabledForEvents(EventMessage aMessage) 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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const nsIContent* GetFirstLegend() const { return mFirstLegend; }
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void AddElement(nsGenericHTMLFormElement* aElement);
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void RemoveElement(nsGenericHTMLFormElement* aElement);
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(HTMLFieldSetElement,
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nsGenericHTMLFormElement)
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// WebIDL
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bool Disabled() const
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{
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return GetBoolAttr(nsGkAtoms::disabled);
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}
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void SetDisabled(bool aValue, ErrorResult& aRv)
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{
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SetHTMLBoolAttr(nsGkAtoms::disabled, aValue, aRv);
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}
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// XPCOM GetName is OK for us
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void SetName(const nsAString& aValue, ErrorResult& aRv)
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{
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SetHTMLAttr(nsGkAtoms::name, aValue, aRv);
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}
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// XPCOM GetType is OK for us
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nsIHTMLCollection* Elements();
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// XPCOM WillValidate is OK for us
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// XPCOM Validity is OK for us
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// XPCOM GetValidationMessage is OK for us
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// XPCOM CheckValidity is OK for us
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// XPCOM SetCustomValidity is OK for us
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virtual EventStates IntrinsicState() const override;
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/*
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* This method will update the fieldset's validity. This method has to be
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* called by fieldset elements whenever their validity state or status regarding
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* constraint validation changes.
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*
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* @note If an element becomes barred from constraint validation, it has to
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* be considered as valid.
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*
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* @param aElementValidityState the new validity state of the element
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*/
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void UpdateValidity(bool aElementValidityState);
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protected:
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virtual ~HTMLFieldSetElement();
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virtual JSObject* WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
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private:
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/**
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* Notify all elements (in mElements) that the first legend of the fieldset
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* has now changed.
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*/
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void NotifyElementsForFirstLegendChange(bool aNotify);
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// This function is used to generate the nsContentList (listed form elements).
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static bool MatchListedElements(Element* aElement, int32_t aNamespaceID,
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nsIAtom* aAtom, void* aData);
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// listed form controls elements.
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RefPtr<nsContentList> mElements;
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// List of elements which have this fieldset as first fieldset ancestor.
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nsTArray<nsGenericHTMLFormElement*> mDependentElements;
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nsIContent* mFirstLegend;
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/**
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* Number of invalid and candidate for constraint validation
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* elements in the fieldSet the last time UpdateValidity has been called.
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*
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* @note Should only be used by UpdateValidity() and IntrinsicState()!
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*/
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int32_t mInvalidElementsCount;
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};
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} // namespace dom
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} // namespace mozilla
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#endif /* mozilla_dom_HTMLFieldSetElement_h */
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