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/* -*- Mode: C++; tab-width: 8; 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/SVGAnimatedTransformList.h"
#include "DOMSVGTransformList.h"
#include "nsSVGAnimatedTransformList.h"
#include "nsSVGAttrTearoffTable.h"
#include "mozilla/dom/SVGAnimatedTransformListBinding.h"
namespace mozilla {
namespace dom {
static
nsSVGAttrTearoffTable<nsSVGAnimatedTransformList, SVGAnimatedTransformList>
sSVGAnimatedTransformListTearoffTable;
NS_SVG_VAL_IMPL_CYCLE_COLLECTION_WRAPPERCACHED(SVGAnimatedTransformList, mElement)
NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(SVGAnimatedTransformList, AddRef)
NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(SVGAnimatedTransformList, Release)
JSObject*
SVGAnimatedTransformList::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return SVGAnimatedTransformListBinding::Wrap(aCx, this, aGivenProto);
}
//----------------------------------------------------------------------
already_AddRefed<DOMSVGTransformList>
SVGAnimatedTransformList::BaseVal()
{
if (!mBaseVal) {
mBaseVal = new DOMSVGTransformList(this, InternalAList().GetBaseValue());
}
RefPtr<DOMSVGTransformList> baseVal = mBaseVal;
return baseVal.forget();
}
already_AddRefed<DOMSVGTransformList>
SVGAnimatedTransformList::AnimVal()
{
if (!mAnimVal) {
mAnimVal = new DOMSVGTransformList(this, InternalAList().GetAnimValue());
}
RefPtr<DOMSVGTransformList> animVal = mAnimVal;
return animVal.forget();
}
/* static */ already_AddRefed<SVGAnimatedTransformList>
SVGAnimatedTransformList::GetDOMWrapper(nsSVGAnimatedTransformList *aList,
nsSVGElement *aElement)
{
RefPtr<SVGAnimatedTransformList> wrapper =
sSVGAnimatedTransformListTearoffTable.GetTearoff(aList);
if (!wrapper) {
wrapper = new SVGAnimatedTransformList(aElement);
sSVGAnimatedTransformListTearoffTable.AddTearoff(aList, wrapper);
}
return wrapper.forget();
}
/* static */ SVGAnimatedTransformList*
SVGAnimatedTransformList::GetDOMWrapperIfExists(
nsSVGAnimatedTransformList *aList)
{
return sSVGAnimatedTransformListTearoffTable.GetTearoff(aList);
}
SVGAnimatedTransformList::~SVGAnimatedTransformList()
{
// Script no longer has any references to us, to our base/animVal objects, or
// to any of their list items.
sSVGAnimatedTransformListTearoffTable.RemoveTearoff(&InternalAList());
}
void
SVGAnimatedTransformList::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<SVGAnimatedTransformList> 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
SVGAnimatedTransformList::InternalAnimValListWillChangeLengthTo(
uint32_t aNewLength)
{
if (mAnimVal) {
mAnimVal->InternalListLengthWillChange(aNewLength);
}
}
bool
SVGAnimatedTransformList::IsAnimating() const
{
return InternalAList().IsAnimating();
}
nsSVGAnimatedTransformList&
SVGAnimatedTransformList::InternalAList()
{
return *mElement->GetAnimatedTransformList();
}
const nsSVGAnimatedTransformList&
SVGAnimatedTransformList::InternalAList() const
{
return *mElement->GetAnimatedTransformList();
}
} // namespace dom
} // namespace mozilla
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