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-rw-r--r--dom/svg/DOMSVGAnimatedLengthList.cpp126
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diff --git a/dom/svg/DOMSVGAnimatedLengthList.cpp b/dom/svg/DOMSVGAnimatedLengthList.cpp
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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