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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
#include "DOMSVGAnimatedTransformList.h"
#include "DOMSVGTransformList.h"
#include "SVGAnimatedTransformList.h"
#include "SVGAttrTearoffTable.h"
#include "mozilla/dom/SVGAnimatedTransformListBinding.h"
namespace mozilla::dom {
static SVGAttrTearoffTable<SVGAnimatedTransformList,
DOMSVGAnimatedTransformList>
sSVGAnimatedTransformListTearoffTable;
NS_SVG_VAL_IMPL_CYCLE_COLLECTION_WRAPPERCACHED(DOMSVGAnimatedTransformList,
mElement)
JSObject* DOMSVGAnimatedTransformList::WrapObject(
JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
return SVGAnimatedTransformList_Binding::Wrap(aCx, this, aGivenProto);
}
//----------------------------------------------------------------------
already_AddRefed<DOMSVGTransformList> DOMSVGAnimatedTransformList::BaseVal() {
if (!mBaseVal) {
mBaseVal = new DOMSVGTransformList(this, InternalAList().GetBaseValue());
}
RefPtr<DOMSVGTransformList> baseVal = mBaseVal;
return baseVal.forget();
}
already_AddRefed<DOMSVGTransformList> DOMSVGAnimatedTransformList::AnimVal() {
if (!mAnimVal) {
mAnimVal = new DOMSVGTransformList(this, InternalAList().GetAnimValue());
}
RefPtr<DOMSVGTransformList> animVal = mAnimVal;
return animVal.forget();
}
/* static */
already_AddRefed<DOMSVGAnimatedTransformList>
DOMSVGAnimatedTransformList::GetDOMWrapper(SVGAnimatedTransformList* aList,
SVGElement* aElement) {
RefPtr<DOMSVGAnimatedTransformList> wrapper =
sSVGAnimatedTransformListTearoffTable.GetTearoff(aList);
if (!wrapper) {
wrapper = new DOMSVGAnimatedTransformList(aElement);
sSVGAnimatedTransformListTearoffTable.AddTearoff(aList, wrapper);
}
return wrapper.forget();
}
/* static */
DOMSVGAnimatedTransformList* DOMSVGAnimatedTransformList::GetDOMWrapperIfExists(
SVGAnimatedTransformList* aList) {
return sSVGAnimatedTransformListTearoffTable.GetTearoff(aList);
}
DOMSVGAnimatedTransformList::~DOMSVGAnimatedTransformList() {
// Script no longer has any references to us, to our base/animVal objects, or
// to any of their list items.
sSVGAnimatedTransformListTearoffTable.RemoveTearoff(&InternalAList());
}
void DOMSVGAnimatedTransformList::InternalBaseValListWillChangeLengthTo(
uint32_t aNewLength) {
// When the number of items in our internal counterpart's baseVal changes,
// we MUST keep our baseVal in sync. If we don't, script will either see a
// list that is too short and be unable to access indexes that should be
// valid, or else, MUCH WORSE, script will see a list that is too long and be
// able to access "items" at indexes that are out of bounds (read/write to
// bad memory)!!
RefPtr<DOMSVGAnimatedTransformList> kungFuDeathGrip;
if (mBaseVal) {
if (aNewLength < mBaseVal->LengthNoFlush()) {
// InternalListLengthWillChange might clear last reference to |this|.
// Retain a temporary reference to keep from dying before returning.
kungFuDeathGrip = this;
}
mBaseVal->InternalListLengthWillChange(aNewLength);
}
// If our attribute is not animating, then our animVal mirrors our baseVal
// and we must sync its length too. (If our attribute is animating, then the
// SMIL engine takes care of calling InternalAnimValListWillChangeLengthTo()
// if necessary.)
if (!IsAnimating()) {
InternalAnimValListWillChangeLengthTo(aNewLength);
}
}
void DOMSVGAnimatedTransformList::InternalAnimValListWillChangeLengthTo(
uint32_t aNewLength) {
if (mAnimVal) {
mAnimVal->InternalListLengthWillChange(aNewLength);
}
}
bool DOMSVGAnimatedTransformList::IsAnimating() const {
return InternalAList().IsAnimating();
}
SVGAnimatedTransformList& DOMSVGAnimatedTransformList::InternalAList() {
return *mElement->GetAnimatedTransformList();
}
const SVGAnimatedTransformList& DOMSVGAnimatedTransformList::InternalAList()
const {
return *mElement->GetAnimatedTransformList();
}
} // namespace mozilla::dom