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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 "DOMSVGAnimatedNumberList.h"
#include "DOMSVGNumberList.h"
#include "SVGAnimatedNumberList.h"
#include "SVGAttrTearoffTable.h"
#include "mozilla/dom/SVGAnimatedNumberListBinding.h"
#include "mozilla/dom/SVGElement.h"
#include "mozilla/RefPtr.h"
// See the architecture comment in this file's header.
namespace mozilla::dom {
static inline SVGAttrTearoffTable<SVGAnimatedNumberList,
DOMSVGAnimatedNumberList>&
SVGAnimatedNumberListTearoffTable() {
static SVGAttrTearoffTable<SVGAnimatedNumberList, DOMSVGAnimatedNumberList>
sSVGAnimatedNumberListTearoffTable;
return sSVGAnimatedNumberListTearoffTable;
}
NS_SVG_VAL_IMPL_CYCLE_COLLECTION_WRAPPERCACHED(DOMSVGAnimatedNumberList,
mElement)
JSObject* DOMSVGAnimatedNumberList::WrapObject(
JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
return mozilla::dom::SVGAnimatedNumberList_Binding::Wrap(aCx, this,
aGivenProto);
}
already_AddRefed<DOMSVGNumberList> DOMSVGAnimatedNumberList::BaseVal() {
if (!mBaseVal) {
mBaseVal = new DOMSVGNumberList(this, InternalAList().GetBaseValue());
}
RefPtr<DOMSVGNumberList> baseVal = mBaseVal;
return baseVal.forget();
}
already_AddRefed<DOMSVGNumberList> DOMSVGAnimatedNumberList::AnimVal() {
if (!mAnimVal) {
mAnimVal = new DOMSVGNumberList(this, InternalAList().GetAnimValue());
}
RefPtr<DOMSVGNumberList> animVal = mAnimVal;
return animVal.forget();
}
/* static */
already_AddRefed<DOMSVGAnimatedNumberList>
DOMSVGAnimatedNumberList::GetDOMWrapper(SVGAnimatedNumberList* aList,
dom::SVGElement* aElement,
uint8_t aAttrEnum) {
RefPtr<DOMSVGAnimatedNumberList> wrapper =
SVGAnimatedNumberListTearoffTable().GetTearoff(aList);
if (!wrapper) {
wrapper = new DOMSVGAnimatedNumberList(aElement, aAttrEnum);
SVGAnimatedNumberListTearoffTable().AddTearoff(aList, wrapper);
}
return wrapper.forget();
}
/* static */
DOMSVGAnimatedNumberList* DOMSVGAnimatedNumberList::GetDOMWrapperIfExists(
SVGAnimatedNumberList* aList) {
return SVGAnimatedNumberListTearoffTable().GetTearoff(aList);
}
DOMSVGAnimatedNumberList::~DOMSVGAnimatedNumberList() {
// Script no longer has any references to us, to our base/animVal objects, or
// to any of their list items.
SVGAnimatedNumberListTearoffTable().RemoveTearoff(&InternalAList());
}
void DOMSVGAnimatedNumberList::InternalBaseValListWillChangeTo(
const SVGNumberList& aNewValue) {
// 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<DOMSVGAnimatedNumberList> kungFuDeathGrip;
if (mBaseVal) {
if (aNewValue.Length() < mBaseVal->LengthNoFlush()) {
// InternalListLengthWillChange might clear last reference to |this|.
// Retain a temporary reference to keep from dying before returning.
kungFuDeathGrip = this;
}
mBaseVal->InternalListLengthWillChange(aNewValue.Length());
}
// 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 InternalAnimValListWillChangeTo() if
// necessary.)
if (!IsAnimating()) {
InternalAnimValListWillChangeTo(aNewValue);
}
}
void DOMSVGAnimatedNumberList::InternalAnimValListWillChangeTo(
const SVGNumberList& aNewValue) {
if (mAnimVal) {
mAnimVal->InternalListLengthWillChange(aNewValue.Length());
}
}
bool DOMSVGAnimatedNumberList::IsAnimating() const {
return InternalAList().IsAnimating();
}
SVGAnimatedNumberList& DOMSVGAnimatedNumberList::InternalAList() {
return *mElement->GetAnimatedNumberList(mAttrEnum);
}
const SVGAnimatedNumberList& DOMSVGAnimatedNumberList::InternalAList() const {
return *mElement->GetAnimatedNumberList(mAttrEnum);
}
} // namespace mozilla::dom
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