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-rw-r--r--dom/svg/SVGAnimatedNumberList.cpp188
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diff --git a/dom/svg/SVGAnimatedNumberList.cpp b/dom/svg/SVGAnimatedNumberList.cpp
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+++ b/dom/svg/SVGAnimatedNumberList.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 "SVGAnimatedNumberList.h"
+
+#include "DOMSVGAnimatedNumberList.h"
+#include "mozilla/Move.h"
+#include "nsSVGElement.h"
+#include "nsSVGAttrTearoffTable.h"
+#include "nsSMILValue.h"
+#include "SVGNumberListSMILType.h"
+
+namespace mozilla {
+
+nsresult
+SVGAnimatedNumberList::SetBaseValueString(const nsAString& aValue)
+{
+ SVGNumberList newBaseValue;
+ nsresult rv = newBaseValue.SetValueFromString(aValue);
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+
+ DOMSVGAnimatedNumberList *domWrapper =
+ DOMSVGAnimatedNumberList::GetDOMWrapperIfExists(this);
+ if (domWrapper) {
+ // We must send this notification *before* changing mBaseVal! If the length
+ // of our baseVal is being reduced, our baseVal's DOM wrapper list may have
+ // to remove DOM items from itself, and any removed DOM items need to copy
+ // their internal counterpart values *before* we change them.
+ //
+ domWrapper->InternalBaseValListWillChangeTo(newBaseValue);
+ }
+
+ // We don't need to call DidChange* here - we're only called by
+ // nsSVGElement::ParseAttribute under Element::SetAttr,
+ // which takes care of notifying.
+
+ mIsBaseSet = true;
+ rv = mBaseVal.CopyFrom(newBaseValue);
+ if (NS_FAILED(rv) && domWrapper) {
+ // Attempting to increase mBaseVal's length failed - reduce domWrapper
+ // back to the same length:
+ domWrapper->InternalBaseValListWillChangeTo(mBaseVal);
+ }
+ return rv;
+}
+
+void
+SVGAnimatedNumberList::ClearBaseValue(uint32_t aAttrEnum)
+{
+ DOMSVGAnimatedNumberList *domWrapper =
+ DOMSVGAnimatedNumberList::GetDOMWrapperIfExists(this);
+ if (domWrapper) {
+ // We must send this notification *before* changing mBaseVal! (See above.)
+ domWrapper->InternalBaseValListWillChangeTo(SVGNumberList());
+ }
+ mBaseVal.Clear();
+ mIsBaseSet = false;
+ // Caller notifies
+}
+
+nsresult
+SVGAnimatedNumberList::SetAnimValue(const SVGNumberList& aNewAnimValue,
+ nsSVGElement *aElement,
+ uint32_t aAttrEnum)
+{
+ DOMSVGAnimatedNumberList *domWrapper =
+ DOMSVGAnimatedNumberList::GetDOMWrapperIfExists(this);
+ if (domWrapper) {
+ // A new animation may totally change the number of items in the animVal
+ // list, replacing what was essentially a mirror of the baseVal list, or
+ // else replacing and overriding an existing animation. When this happens
+ // we must try and keep our animVal's DOM wrapper in sync (see the comment
+ // in DOMSVGAnimatedNumberList::InternalBaseValListWillChangeTo).
+ //
+ // It's not possible for us to reliably distinguish between calls to this
+ // method that are setting a new sample for an existing animation, and
+ // calls that are setting the first sample of an animation that will
+ // override an existing animation. Happily it's cheap to just blindly
+ // notify our animVal's DOM wrapper of its internal counterpart's new value
+ // each time this method is called, so that's what we do.
+ //
+ // Note that we must send this notification *before* setting or changing
+ // mAnimVal! (See the comment in SetBaseValueString above.)
+ //
+ domWrapper->InternalAnimValListWillChangeTo(aNewAnimValue);
+ }
+ if (!mAnimVal) {
+ mAnimVal = new SVGNumberList();
+ }
+ nsresult rv = mAnimVal->CopyFrom(aNewAnimValue);
+ if (NS_FAILED(rv)) {
+ // OOM. We clear the animation, and, importantly, ClearAnimValue() ensures
+ // that mAnimVal and its DOM wrapper (if any) will have the same length!
+ ClearAnimValue(aElement, aAttrEnum);
+ return rv;
+ }
+ aElement->DidAnimateNumberList(aAttrEnum);
+ return NS_OK;
+}
+
+void
+SVGAnimatedNumberList::ClearAnimValue(nsSVGElement *aElement,
+ uint32_t aAttrEnum)
+{
+ DOMSVGAnimatedNumberList *domWrapper =
+ DOMSVGAnimatedNumberList::GetDOMWrapperIfExists(this);
+ if (domWrapper) {
+ // When all animation ends, animVal simply mirrors baseVal, which may have
+ // a different number of items to the last active animated value. We must
+ // keep the length of our animVal's DOM wrapper list in sync, and again we
+ // must do that before touching mAnimVal. See comments above.
+ //
+ domWrapper->InternalAnimValListWillChangeTo(mBaseVal);
+ }
+ mAnimVal = nullptr;
+ aElement->DidAnimateNumberList(aAttrEnum);
+}
+
+nsISMILAttr*
+SVGAnimatedNumberList::ToSMILAttr(nsSVGElement *aSVGElement,
+ uint8_t aAttrEnum)
+{
+ return new SMILAnimatedNumberList(this, aSVGElement, aAttrEnum);
+}
+
+nsresult
+SVGAnimatedNumberList::
+ SMILAnimatedNumberList::ValueFromString(const nsAString& aStr,
+ const dom::SVGAnimationElement* /*aSrcElement*/,
+ nsSMILValue& aValue,
+ bool& aPreventCachingOfSandwich) const
+{
+ nsSMILValue val(&SVGNumberListSMILType::sSingleton);
+ SVGNumberListAndInfo *nlai = static_cast<SVGNumberListAndInfo*>(val.mU.mPtr);
+ nsresult rv = nlai->SetValueFromString(aStr);
+ if (NS_SUCCEEDED(rv)) {
+ nlai->SetInfo(mElement);
+ aValue = Move(val);
+ }
+ aPreventCachingOfSandwich = false;
+ return rv;
+}
+
+nsSMILValue
+SVGAnimatedNumberList::SMILAnimatedNumberList::GetBaseValue() const
+{
+ // To benefit from Return Value Optimization and avoid copy constructor calls
+ // due to our use of return-by-value, we must return the exact same object
+ // from ALL return points. This function must only return THIS variable:
+ nsSMILValue val;
+
+ nsSMILValue tmp(&SVGNumberListSMILType::sSingleton);
+ SVGNumberListAndInfo *nlai = static_cast<SVGNumberListAndInfo*>(tmp.mU.mPtr);
+ nsresult rv = nlai->CopyFrom(mVal->mBaseVal);
+ if (NS_SUCCEEDED(rv)) {
+ nlai->SetInfo(mElement);
+ Swap(val, tmp);
+ }
+ return val;
+}
+
+nsresult
+SVGAnimatedNumberList::SMILAnimatedNumberList::SetAnimValue(const nsSMILValue& aValue)
+{
+ NS_ASSERTION(aValue.mType == &SVGNumberListSMILType::sSingleton,
+ "Unexpected type to assign animated value");
+ if (aValue.mType == &SVGNumberListSMILType::sSingleton) {
+ mVal->SetAnimValue(*static_cast<SVGNumberListAndInfo*>(aValue.mU.mPtr),
+ mElement,
+ mAttrEnum);
+ }
+ return NS_OK;
+}
+
+void
+SVGAnimatedNumberList::SMILAnimatedNumberList::ClearAnimValue()
+{
+ if (mVal->mAnimVal) {
+ mVal->ClearAnimValue(mElement, mAttrEnum);
+ }
+}
+
+} // namespace mozilla