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/* -*- 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/. */
#include "mozilla/dom/CSSPseudoElement.h"
#include "mozilla/dom/CSSPseudoElementBinding.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/KeyframeEffectBinding.h"
#include "mozilla/AnimationComparator.h"
namespace mozilla::dom {
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(CSSPseudoElement, mOriginatingElement)
NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(CSSPseudoElement, AddRef)
NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(CSSPseudoElement, Release)
CSSPseudoElement::CSSPseudoElement(dom::Element* aElement,
PseudoStyleType aType)
: mOriginatingElement(aElement), mPseudoType(aType) {
MOZ_ASSERT(aElement);
MOZ_ASSERT(aType == PseudoStyleType::after ||
aType == PseudoStyleType::before ||
aType == PseudoStyleType::marker,
"Unexpected Pseudo Type");
}
CSSPseudoElement::~CSSPseudoElement() {
// Element might have been unlinked already, so we have to do null check.
if (mOriginatingElement) {
mOriginatingElement->RemoveProperty(
GetCSSPseudoElementPropertyAtom(mPseudoType));
}
}
ParentObject CSSPseudoElement::GetParentObject() const {
return mOriginatingElement->GetParentObject();
}
JSObject* CSSPseudoElement::WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return CSSPseudoElement_Binding::Wrap(aCx, this, aGivenProto);
}
/* static */
already_AddRefed<CSSPseudoElement> CSSPseudoElement::GetCSSPseudoElement(
dom::Element* aElement, PseudoStyleType aType) {
if (!aElement) {
return nullptr;
}
nsAtom* propName = CSSPseudoElement::GetCSSPseudoElementPropertyAtom(aType);
RefPtr<CSSPseudoElement> pseudo =
static_cast<CSSPseudoElement*>(aElement->GetProperty(propName));
if (pseudo) {
return pseudo.forget();
}
// CSSPseudoElement is a purely external interface created on-demand, and
// when all references from script to the pseudo are dropped, we can drop the
// CSSPseudoElement object, so use a non-owning reference from Element to
// CSSPseudoElement.
pseudo = new CSSPseudoElement(aElement, aType);
nsresult rv = aElement->SetProperty(propName, pseudo, nullptr, true);
if (NS_FAILED(rv)) {
NS_WARNING("SetProperty failed");
return nullptr;
}
return pseudo.forget();
}
/* static */
nsAtom* CSSPseudoElement::GetCSSPseudoElementPropertyAtom(
PseudoStyleType aType) {
switch (aType) {
case PseudoStyleType::before:
return nsGkAtoms::cssPseudoElementBeforeProperty;
case PseudoStyleType::after:
return nsGkAtoms::cssPseudoElementAfterProperty;
case PseudoStyleType::marker:
return nsGkAtoms::cssPseudoElementMarkerProperty;
default:
MOZ_ASSERT_UNREACHABLE(
"Should not try to get CSSPseudoElement "
"other than ::before, ::after or ::marker");
return nullptr;
}
}
} // namespace mozilla::dom
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