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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
120 lines
3.7 KiB
C++
120 lines
3.7 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_HTMLOutputElement_h
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#define mozilla_dom_HTMLOutputElement_h
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#include "mozilla/Attributes.h"
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#include "nsGenericHTMLElement.h"
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#include "nsStubMutationObserver.h"
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#include "nsIConstraintValidation.h"
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namespace mozilla {
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namespace dom {
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class HTMLFormSubmission;
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class HTMLOutputElement final : public nsGenericHTMLFormElement,
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public nsStubMutationObserver,
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public nsIConstraintValidation
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{
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public:
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using nsIConstraintValidation::GetValidationMessage;
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explicit HTMLOutputElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo,
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FromParser aFromParser = NOT_FROM_PARSER);
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// nsISupports
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NS_DECL_ISUPPORTS_INHERITED
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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 IsDisabled() const override { return false; }
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nsresult Clone(mozilla::dom::NodeInfo* aNodeInfo, nsINode** aResult,
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bool aPreallocateChildren) const override;
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bool ParseAttribute(int32_t aNamespaceID, nsIAtom* aAttribute,
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const nsAString& aValue, nsAttrValue& aResult) override;
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virtual void DoneAddingChildren(bool aHaveNotified) override;
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EventStates IntrinsicState() const override;
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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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// This function is called when a callback function from nsIMutationObserver
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// has to be used to update the defaultValue attribute.
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void DescendantsChanged();
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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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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(HTMLOutputElement,
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nsGenericHTMLFormElement)
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virtual JSObject* WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
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// WebIDL
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nsDOMTokenList* HtmlFor();
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// nsGenericHTMLFormElement::GetForm is fine.
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void GetName(nsAString& aName)
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{
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GetHTMLAttr(nsGkAtoms::name, aName);
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}
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void SetName(const nsAString& aName, ErrorResult& aRv)
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{
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SetHTMLAttr(nsGkAtoms::name, aName, aRv);
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}
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void GetType(nsAString& aType)
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{
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aType.AssignLiteral("output");
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}
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void GetDefaultValue(nsAString& aDefaultValue)
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{
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aDefaultValue = mDefaultValue;
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}
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void SetDefaultValue(const nsAString& aDefaultValue, ErrorResult& aRv);
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void GetValue(nsAString& aValue);
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void SetValue(const nsAString& aValue, ErrorResult& aRv);
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// nsIConstraintValidation::WillValidate is fine.
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// nsIConstraintValidation::Validity() is fine.
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// nsIConstraintValidation::GetValidationMessage() is fine.
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// nsIConstraintValidation::CheckValidity() is fine.
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void SetCustomValidity(const nsAString& aError);
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protected:
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virtual ~HTMLOutputElement();
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enum ValueModeFlag {
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eModeDefault,
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eModeValue
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};
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ValueModeFlag mValueModeFlag;
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bool mIsDoneAddingChildren;
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nsString mDefaultValue;
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RefPtr<nsDOMTokenList> mTokenList;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_HTMLOutputElement_h
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