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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /dom/svg/DOMSVGAnimatedLengthList.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'dom/svg/DOMSVGAnimatedLengthList.cpp')
-rw-r--r--dom/svg/DOMSVGAnimatedLengthList.cpp143
1 files changed, 143 insertions, 0 deletions
diff --git a/dom/svg/DOMSVGAnimatedLengthList.cpp b/dom/svg/DOMSVGAnimatedLengthList.cpp
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+++ 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 "nsSVGElement.h"
+#include "nsCOMPtr.h"
+#include "nsSVGAttrTearoffTable.h"
+#include "mozilla/dom/SVGAnimatedLengthListBinding.h"
+
+// See the architecture comment in this file's header.
+
+namespace mozilla {
+
+static inline
+nsSVGAttrTearoffTable<SVGAnimatedLengthList, DOMSVGAnimatedLengthList>&
+SVGAnimatedLengthListTearoffTable()
+{
+ static nsSVGAttrTearoffTable<SVGAnimatedLengthList, DOMSVGAnimatedLengthList>
+ sSVGAnimatedLengthListTearoffTable;
+ return sSVGAnimatedLengthListTearoffTable;
+}
+
+NS_SVG_VAL_IMPL_CYCLE_COLLECTION_WRAPPERCACHED(DOMSVGAnimatedLengthList, mElement)
+
+NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(DOMSVGAnimatedLengthList, AddRef)
+NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(DOMSVGAnimatedLengthList, Release)
+
+JSObject*
+DOMSVGAnimatedLengthList::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
+{
+ return dom::SVGAnimatedLengthListBinding::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,
+ nsSVGElement *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