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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
143 lines
4.3 KiB
C++
143 lines
4.3 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_HTMLOptionElement_h__
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#define mozilla_dom_HTMLOptionElement_h__
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#include "mozilla/Attributes.h"
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#include "nsGenericHTMLElement.h"
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#include "nsIDOMHTMLOptionElement.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 HTMLSelectElement;
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class HTMLOptionElement final : public nsGenericHTMLElement,
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public nsIDOMHTMLOptionElement
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{
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public:
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explicit HTMLOptionElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo);
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static already_AddRefed<HTMLOptionElement>
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Option(const GlobalObject& aGlobal,
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const Optional<nsAString>& aText,
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const Optional<nsAString>& aValue,
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const Optional<bool>& aDefaultSelected,
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const Optional<bool>& aSelected, ErrorResult& aError);
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NS_IMPL_FROMCONTENT_HTML_WITH_TAG(HTMLOptionElement, option)
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// nsISupports
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NS_DECL_ISUPPORTS_INHERITED
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// nsIDOMHTMLOptionElement
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using mozilla::dom::Element::SetText;
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using mozilla::dom::Element::GetText;
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NS_DECL_NSIDOMHTMLOPTIONELEMENT
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bool Selected() const;
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bool DefaultSelected() const;
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virtual nsChangeHint GetAttributeChangeHint(const nsIAtom* aAttribute,
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int32_t aModType) const override;
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virtual nsresult BeforeSetAttr(int32_t aNamespaceID, nsIAtom* aName,
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const nsAttrValueOrString* aValue,
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bool aNotify) 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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void SetSelectedInternal(bool aValue, bool aNotify);
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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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// nsIContent
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virtual EventStates IntrinsicState() 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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nsresult CopyInnerTo(mozilla::dom::Element* aDest, bool aPreallocateChildren);
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virtual bool IsDisabled() const override {
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return HasAttr(kNameSpaceID_None, nsGkAtoms::disabled);
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}
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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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HTMLFormElement* GetForm();
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// The XPCOM GetLabel is OK for us
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void SetLabel(const nsAString& aLabel, ErrorResult& aError)
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{
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SetHTMLAttr(nsGkAtoms::label, aLabel, aError);
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}
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// The XPCOM DefaultSelected is OK for us
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void SetDefaultSelected(bool aValue, ErrorResult& aRv)
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{
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SetHTMLBoolAttr(nsGkAtoms::selected, aValue, aRv);
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}
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// The XPCOM Selected is OK for us
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void SetSelected(bool aValue, ErrorResult& aRv)
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{
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aRv = SetSelected(aValue);
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}
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// The XPCOM GetValue is OK for us
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void SetValue(const nsAString& aValue, ErrorResult& aRv)
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{
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SetHTMLAttr(nsGkAtoms::value, aValue, aRv);
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}
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// The XPCOM GetText is OK for us
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void SetText(const nsAString& aValue, ErrorResult& aRv)
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{
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aRv = SetText(aValue);
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}
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int32_t Index();
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protected:
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virtual ~HTMLOptionElement();
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virtual JSObject* WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
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/**
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* Get the select content element that contains this option, this
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* intentionally does not return nsresult, all we care about is if
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* there's a select associated with this option or not.
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*/
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HTMLSelectElement* GetSelect();
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bool mSelectedChanged;
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bool mIsSelected;
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// True only while we're under the SetOptionsSelectedByIndex call when our
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// "selected" attribute is changing and mSelectedChanged is false.
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bool mIsInSetDefaultSelected;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_HTMLOptionElement_h__
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