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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 "DOMSVGAnimatedLengthList.h"
#include "DOMSVGLengthList.h"
#include "SVGAnimatedLengthList.h"
#include "SVGAttrTearoffTable.h"
#include "mozilla/dom/SVGAnimatedLengthListBinding.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<SVGAnimatedLengthList,
DOMSVGAnimatedLengthList>&
SVGAnimatedLengthListTearoffTable() {
static SVGAttrTearoffTable<SVGAnimatedLengthList, DOMSVGAnimatedLengthList>
sSVGAnimatedLengthListTearoffTable;
return sSVGAnimatedLengthListTearoffTable;
}
NS_SVG_VAL_IMPL_CYCLE_COLLECTION_WRAPPERCACHED(DOMSVGAnimatedLengthList,
mElement)
JSObject* DOMSVGAnimatedLengthList::WrapObject(
JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
return dom::SVGAnimatedLengthList_Binding::Wrap(aCx, this, aGivenProto);
}
already_AddRefed<DOMSVGLengthList> DOMSVGAnimatedLengthList::BaseVal() {
if (!mBaseVal) {
mBaseVal = new DOMSVGLengthList(this, InternalAList().GetBaseValue());
}
RefPtr<DOMSVGLengthList> baseVal = mBaseVal;
return baseVal.forget();
}
already_AddRefed<DOMSVGLengthList> DOMSVGAnimatedLengthList::AnimVal() {
if (!mAnimVal) {
mAnimVal = new DOMSVGLengthList(this, InternalAList().GetAnimValue());
}
RefPtr<DOMSVGLengthList> animVal = mAnimVal;
return animVal.forget();
}
/* static */
already_AddRefed<DOMSVGAnimatedLengthList>
DOMSVGAnimatedLengthList::GetDOMWrapper(SVGAnimatedLengthList* aList,
dom::SVGElement* aElement,
uint8_t aAttrEnum, uint8_t aAxis) {
RefPtr<DOMSVGAnimatedLengthList> wrapper =
SVGAnimatedLengthListTearoffTable().GetTearoff(aList);
if (!wrapper) {
wrapper = new DOMSVGAnimatedLengthList(aElement, aAttrEnum, aAxis);
SVGAnimatedLengthListTearoffTable().AddTearoff(aList, wrapper);
}
return wrapper.forget();
}
/* static */
DOMSVGAnimatedLengthList* DOMSVGAnimatedLengthList::GetDOMWrapperIfExists(
SVGAnimatedLengthList* aList) {
return SVGAnimatedLengthListTearoffTable().GetTearoff(aList);
}
DOMSVGAnimatedLengthList::~DOMSVGAnimatedLengthList() {
// Script no longer has any references to us, to our base/animVal objects, or
// to any of their list items.
SVGAnimatedLengthListTearoffTable().RemoveTearoff(&InternalAList());
}
void DOMSVGAnimatedLengthList::InternalBaseValListWillChangeTo(
const SVGLengthList& 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<DOMSVGAnimatedLengthList> 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 DOMSVGAnimatedLengthList::InternalAnimValListWillChangeTo(
const SVGLengthList& aNewValue) {
if (mAnimVal) {
mAnimVal->InternalListLengthWillChange(aNewValue.Length());
}
}
bool DOMSVGAnimatedLengthList::IsAnimating() const {
return InternalAList().IsAnimating();
}
SVGAnimatedLengthList& DOMSVGAnimatedLengthList::InternalAList() {
return *mElement->GetAnimatedLengthList(mAttrEnum);
}
const SVGAnimatedLengthList& DOMSVGAnimatedLengthList::InternalAList() const {
return *mElement->GetAnimatedLengthList(mAttrEnum);
}
} // namespace mozilla::dom
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