зеркало из https://github.com/mozilla/gecko-dev.git
125 строки
3.8 KiB
C++
125 строки
3.8 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/. */
|
|
|
|
#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 {
|
|
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(FlushType::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;
|
|
}
|
|
|
|
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(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
|