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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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" // for ElementOrCSSPseudoElement class
#include "mozilla/AnimationComparator.h"
namespace mozilla {
namespace dom {
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(CSSPseudoElement, mParentElement)
NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(CSSPseudoElement, AddRef)
NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(CSSPseudoElement, Release)
CSSPseudoElement::CSSPseudoElement(Element* aElement,
CSSPseudoElementType aType)
: mParentElement(aElement)
, mPseudoType(aType)
{
MOZ_ASSERT(aElement);
MOZ_ASSERT(aType == CSSPseudoElementType::after ||
aType == CSSPseudoElementType::before,
"Unexpected Pseudo Type");
}
CSSPseudoElement::~CSSPseudoElement()
{
// Element might have been unlinked already, so we have to do null check.
if (mParentElement) {
mParentElement->DeleteProperty(
GetCSSPseudoElementPropertyAtom(mPseudoType));
}
}
ParentObject
CSSPseudoElement::GetParentObject() const
{
return mParentElement->GetParentObject();
}
JSObject*
CSSPseudoElement::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return CSSPseudoElementBinding::Wrap(aCx, this, aGivenProto);
}
void
CSSPseudoElement::GetAnimations(const AnimationFilter& filter,
nsTArray<RefPtr<Animation>>& aRetVal)
{
nsIDocument* doc = mParentElement->GetComposedDoc();
if (doc) {
doc->FlushPendingNotifications(Flush_Style);
}
Element::GetAnimationsUnsorted(mParentElement, mPseudoType, aRetVal);
aRetVal.Sort(AnimationPtrComparator<RefPtr<Animation>>());
}
already_AddRefed<Animation>
CSSPseudoElement::Animate(
JSContext* aContext,
JS::Handle<JSObject*> aKeyframes,
const UnrestrictedDoubleOrKeyframeAnimationOptions& aOptions,
ErrorResult& aError)
{
Nullable<ElementOrCSSPseudoElement> target;
target.SetValue().SetAsCSSPseudoElement() = this;
return Element::Animate(target, aContext, aKeyframes, aOptions, aError);
}
/* static */ already_AddRefed<CSSPseudoElement>
CSSPseudoElement::GetCSSPseudoElement(Element* aElement,
CSSPseudoElementType aType)
{
if (!aElement) {
return nullptr;
}
nsIAtom* 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 */ nsIAtom*
CSSPseudoElement::GetCSSPseudoElementPropertyAtom(CSSPseudoElementType aType)
{
switch (aType) {
case CSSPseudoElementType::before:
return nsGkAtoms::cssPseudoElementBeforeProperty;
case CSSPseudoElementType::after:
return nsGkAtoms::cssPseudoElementAfterProperty;
default:
NS_NOTREACHED("Should not try to get CSSPseudoElement "
"other than ::before or ::after");
return nullptr;
}
}
} // namespace dom
} // namespace mozilla
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