gecko-dev/dom/html/HTMLIFrameElement.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

211 lines
6.7 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_HTMLIFrameElement_h
#define mozilla_dom_HTMLIFrameElement_h
#include "mozilla/Attributes.h"
#include "nsGenericHTMLFrameElement.h"
#include "nsIDOMHTMLIFrameElement.h"
#include "nsDOMTokenList.h"
namespace mozilla {
namespace dom {
class HTMLIFrameElement final : public nsGenericHTMLFrameElement
, public nsIDOMHTMLIFrameElement
{
public:
explicit HTMLIFrameElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo,
FromParser aFromParser = NOT_FROM_PARSER);
NS_IMPL_FROMCONTENT_HTML_WITH_TAG(HTMLIFrameElement, iframe)
// nsISupports
NS_DECL_ISUPPORTS_INHERITED
// Element
virtual bool IsInteractiveHTMLContent(bool aIgnoreTabindex) const override
{
return true;
}
// nsIDOMHTMLIFrameElement
NS_DECL_NSIDOMHTMLIFRAMEELEMENT
// nsIContent
virtual bool ParseAttribute(int32_t aNamespaceID,
nsIAtom* aAttribute,
const nsAString& aValue,
nsAttrValue& aResult) override;
NS_IMETHOD_(bool) IsAttributeMapped(const nsIAtom* aAttribute) const override;
virtual nsMapRuleToAttributesFunc GetAttributeMappingFunction() const override;
virtual nsresult Clone(mozilla::dom::NodeInfo *aNodeInfo, nsINode **aResult,
bool aPreallocateChildren) const override;
nsresult SetAttr(int32_t aNameSpaceID, nsIAtom* aName,
const nsAString& aValue, bool aNotify)
{
return SetAttr(aNameSpaceID, aName, nullptr, aValue, aNotify);
}
virtual nsresult SetAttr(int32_t aNameSpaceID, nsIAtom* aName,
nsIAtom* aPrefix, const nsAString& aValue,
bool aNotify) override;
virtual nsresult AfterSetAttr(int32_t aNameSpaceID, nsIAtom* aName,
const nsAttrValue* aValue,
bool aNotify) override;
virtual nsresult UnsetAttr(int32_t aNameSpaceID, nsIAtom* aAttribute,
bool aNotify) override;
uint32_t GetSandboxFlags();
// Web IDL binding methods
// The XPCOM GetSrc is fine for our purposes
void SetSrc(const nsAString& aSrc, ErrorResult& aError)
{
SetHTMLAttr(nsGkAtoms::src, aSrc, aError);
}
void GetSrcdoc(DOMString& aSrcdoc)
{
GetHTMLAttr(nsGkAtoms::srcdoc, aSrcdoc);
}
void SetSrcdoc(const nsAString& aSrcdoc, ErrorResult& aError)
{
SetHTMLAttr(nsGkAtoms::srcdoc, aSrcdoc, aError);
}
void GetName(DOMString& aName)
{
GetHTMLAttr(nsGkAtoms::name, aName);
}
void SetName(const nsAString& aName, ErrorResult& aError)
{
SetHTMLAttr(nsGkAtoms::name, aName, aError);
}
nsDOMTokenList* Sandbox()
{
return GetTokenList(nsGkAtoms::sandbox, sSupportedSandboxTokens);
}
bool AllowFullscreen() const
{
return GetBoolAttr(nsGkAtoms::allowfullscreen);
}
void SetAllowFullscreen(bool aAllow, ErrorResult& aError)
{
SetHTMLBoolAttr(nsGkAtoms::allowfullscreen, aAllow, aError);
}
void GetWidth(DOMString& aWidth)
{
GetHTMLAttr(nsGkAtoms::width, aWidth);
}
void SetWidth(const nsAString& aWidth, ErrorResult& aError)
{
SetHTMLAttr(nsGkAtoms::width, aWidth, aError);
}
void GetHeight(DOMString& aHeight)
{
GetHTMLAttr(nsGkAtoms::height, aHeight);
}
void SetHeight(const nsAString& aHeight, ErrorResult& aError)
{
SetHTMLAttr(nsGkAtoms::height, aHeight, aError);
}
using nsGenericHTMLFrameElement::GetContentDocument;
using nsGenericHTMLFrameElement::GetContentWindow;
void GetAlign(DOMString& aAlign)
{
GetHTMLAttr(nsGkAtoms::align, aAlign);
}
void SetAlign(const nsAString& aAlign, ErrorResult& aError)
{
SetHTMLAttr(nsGkAtoms::align, aAlign, aError);
}
void GetScrolling(DOMString& aScrolling)
{
GetHTMLAttr(nsGkAtoms::scrolling, aScrolling);
}
void SetScrolling(const nsAString& aScrolling, ErrorResult& aError)
{
SetHTMLAttr(nsGkAtoms::scrolling, aScrolling, aError);
}
void GetFrameBorder(DOMString& aFrameBorder)
{
GetHTMLAttr(nsGkAtoms::frameborder, aFrameBorder);
}
void SetFrameBorder(const nsAString& aFrameBorder, ErrorResult& aError)
{
SetHTMLAttr(nsGkAtoms::frameborder, aFrameBorder, aError);
}
// The XPCOM GetLongDesc is fine
void SetLongDesc(const nsAString& aLongDesc, ErrorResult& aError)
{
SetHTMLAttr(nsGkAtoms::longdesc, aLongDesc, aError);
}
void GetMarginWidth(DOMString& aMarginWidth)
{
GetHTMLAttr(nsGkAtoms::marginwidth, aMarginWidth);
}
void SetMarginWidth(const nsAString& aMarginWidth, ErrorResult& aError)
{
SetHTMLAttr(nsGkAtoms::marginwidth, aMarginWidth, aError);
}
void GetMarginHeight(DOMString& aMarginHeight)
{
GetHTMLAttr(nsGkAtoms::marginheight, aMarginHeight);
}
void SetMarginHeight(const nsAString& aMarginHeight, ErrorResult& aError)
{
SetHTMLAttr(nsGkAtoms::marginheight, aMarginHeight, aError);
}
void SetReferrerPolicy(const nsAString& aReferrer, ErrorResult& aError)
{
SetHTMLAttr(nsGkAtoms::referrerpolicy, aReferrer, aError);
}
void GetReferrerPolicy(nsAString& aReferrer)
{
GetEnumAttr(nsGkAtoms::referrerpolicy, EmptyCString().get(), aReferrer);
}
nsIDocument*
GetSVGDocument(nsIPrincipal& aSubjectPrincipal)
{
return GetContentDocument(aSubjectPrincipal);
}
bool Mozbrowser() const
{
return GetBoolAttr(nsGkAtoms::mozbrowser);
}
void SetMozbrowser(bool aAllow, ErrorResult& aError)
{
SetHTMLBoolAttr(nsGkAtoms::mozbrowser, aAllow, aError);
}
using nsGenericHTMLFrameElement::SetMozbrowser;
// nsGenericHTMLFrameElement::GetFrameLoader is fine
// nsGenericHTMLFrameElement::GetAppManifestURL is fine
// The fullscreen flag is set to true only when requestFullscreen is
// explicitly called on this <iframe> element. In case this flag is
// set, the fullscreen state of this element will not be reverted
// automatically when its subdocument exits fullscreen.
bool FullscreenFlag() const { return mFullscreenFlag; }
void SetFullscreenFlag(bool aValue) { mFullscreenFlag = aValue; }
protected:
virtual ~HTMLIFrameElement();
virtual JSObject* WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
private:
static void MapAttributesIntoRule(const nsMappedAttributes* aAttributes,
GenericSpecifiedValues* aGenericData);
static const DOMTokenListSupportedToken sSupportedSandboxTokens[];
};
} // namespace dom
} // namespace mozilla
#endif