gecko-dev/dom/html/HTMLButtonElement.h
Kirk Steuber 7fdb378650 Bug 1359556 - Optimize cloneNode by preinitializing attribute and child arrays r=bz
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
2017-04-20 12:57:48 -07:00

183 lines
6.1 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_HTMLButtonElement_h
#define mozilla_dom_HTMLButtonElement_h
#include "mozilla/Attributes.h"
#include "nsGenericHTMLElement.h"
#include "nsIDOMHTMLButtonElement.h"
#include "nsIConstraintValidation.h"
namespace mozilla {
class EventChainPostVisitor;
class EventChainPreVisitor;
namespace dom {
class HTMLButtonElement final : public nsGenericHTMLFormElementWithState,
public nsIDOMHTMLButtonElement,
public nsIConstraintValidation
{
public:
using nsIConstraintValidation::GetValidationMessage;
explicit HTMLButtonElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo,
FromParser aFromParser = NOT_FROM_PARSER);
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(HTMLButtonElement,
nsGenericHTMLFormElementWithState)
// nsISupports
NS_DECL_ISUPPORTS_INHERITED
virtual int32_t TabIndexDefault() override;
NS_IMPL_FROMCONTENT_HTML_WITH_TAG(HTMLButtonElement, button)
// Element
virtual bool IsInteractiveHTMLContent(bool aIgnoreTabindex) const override
{
return true;
}
// nsIDOMHTMLButtonElement
NS_DECL_NSIDOMHTMLBUTTONELEMENT
// overriden nsIFormControl methods
NS_IMETHOD Reset() override;
NS_IMETHOD SubmitNamesValues(HTMLFormSubmission* aFormSubmission) override;
NS_IMETHOD SaveState() override;
bool RestoreState(nsPresState* aState) override;
virtual bool IsDisabledForEvents(EventMessage aMessage) override;
virtual void FieldSetDisabledChanged(bool aNotify) override;
// nsIDOMEventTarget
virtual nsresult GetEventTargetParent(
EventChainPreVisitor& aVisitor) override;
virtual nsresult PostHandleEvent(
EventChainPostVisitor& aVisitor) override;
// nsINode
virtual nsresult Clone(mozilla::dom::NodeInfo* aNodeInfo, nsINode** aResult,
bool aPreallocateChildren) const override;
virtual JSObject* WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
// nsIContent
virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
nsIContent* aBindingParent,
bool aCompileEventHandlers) override;
virtual void UnbindFromTree(bool aDeep = true,
bool aNullParent = true) override;
virtual void DoneCreatingElement() override;
void UpdateBarredFromConstraintValidation();
// Element
EventStates IntrinsicState() const override;
/**
* Called when an attribute is about to be changed
*/
virtual nsresult BeforeSetAttr(int32_t aNameSpaceID, nsIAtom* aName,
const nsAttrValueOrString* aValue,
bool aNotify) override;
/**
* Called when an attribute has just been changed
*/
nsresult AfterSetAttr(int32_t aNamespaceID, nsIAtom* aName,
const nsAttrValue* aValue, bool aNotify) override;
virtual bool ParseAttribute(int32_t aNamespaceID,
nsIAtom* aAttribute,
const nsAString& aValue,
nsAttrValue& aResult) override;
// nsGenericHTMLElement
virtual bool IsHTMLFocusable(bool aWithMouse,
bool* aIsFocusable,
int32_t* aTabIndex) override;
// WebIDL
bool Autofocus() const
{
return GetBoolAttr(nsGkAtoms::autofocus);
}
void SetAutofocus(bool aAutofocus, ErrorResult& aError)
{
SetHTMLBoolAttr(nsGkAtoms::autofocus, aAutofocus, aError);
}
bool Disabled() const
{
return GetBoolAttr(nsGkAtoms::disabled);
}
void SetDisabled(bool aDisabled, ErrorResult& aError)
{
SetHTMLBoolAttr(nsGkAtoms::disabled, aDisabled, aError);
}
// nsGenericHTMLFormElement::GetForm is fine.
using nsGenericHTMLFormElement::GetForm;
// XPCOM GetFormAction is fine.
void SetFormAction(const nsAString& aFormAction, ErrorResult& aRv)
{
SetHTMLAttr(nsGkAtoms::formaction, aFormAction, aRv);
}
// XPCOM GetFormEnctype is fine.
void SetFormEnctype(const nsAString& aFormEnctype, ErrorResult& aRv)
{
SetHTMLAttr(nsGkAtoms::formenctype, aFormEnctype, aRv);
}
// XPCOM GetFormMethod is fine.
void SetFormMethod(const nsAString& aFormMethod, ErrorResult& aRv)
{
SetHTMLAttr(nsGkAtoms::formmethod, aFormMethod, aRv);
}
bool FormNoValidate() const
{
return GetBoolAttr(nsGkAtoms::formnovalidate);
}
void SetFormNoValidate(bool aFormNoValidate, ErrorResult& aError)
{
SetHTMLBoolAttr(nsGkAtoms::formnovalidate, aFormNoValidate, aError);
}
// XPCOM GetFormTarget is fine.
void SetFormTarget(const nsAString& aFormTarget, ErrorResult& aRv)
{
SetHTMLAttr(nsGkAtoms::formtarget, aFormTarget, aRv);
}
// XPCOM GetName is fine.
void SetName(const nsAString& aName, ErrorResult& aRv)
{
SetHTMLAttr(nsGkAtoms::name, aName, aRv);
}
// XPCOM GetType is fine.
void SetType(const nsAString& aType, ErrorResult& aRv)
{
SetHTMLAttr(nsGkAtoms::type, aType, aRv);
}
// XPCOM GetValue is fine.
void SetValue(const nsAString& aValue, ErrorResult& aRv)
{
SetHTMLAttr(nsGkAtoms::value, aValue, aRv);
}
// nsIConstraintValidation::WillValidate is fine.
// nsIConstraintValidation::Validity() is fine.
// nsIConstraintValidation::GetValidationMessage() is fine.
// nsIConstraintValidation::CheckValidity() is fine.
using nsIConstraintValidation::CheckValidity;
using nsIConstraintValidation::ReportValidity;
// nsIConstraintValidation::SetCustomValidity() is fine.
protected:
virtual ~HTMLButtonElement();
bool mDisabledChanged;
bool mInInternalActivate;
bool mInhibitStateRestoration;
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_HTMLButtonElement_h