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gecko-dev/dom/svg/SVGElement.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 "mozilla/dom/SVGElement.h"
#include "mozilla/AlreadyAddRefed.h"
#include "mozilla/dom/MutationEventBinding.h"
#include "mozilla/dom/MutationObservers.h"
#include "mozilla/dom/CSSRuleBinding.h"
#include "mozilla/dom/SVGElementBinding.h"
#include "mozilla/dom/SVGGeometryElement.h"
#include "mozilla/dom/SVGLengthBinding.h"
#include "mozilla/dom/SVGSVGElement.h"
#include "mozilla/dom/SVGTests.h"
#include "mozilla/dom/SVGUnitTypesBinding.h"
#include "mozilla/dom/Element.h"
#include "mozilla/ArrayUtils.h"
#include "mozilla/DebugOnly.h"
#include "mozilla/DeclarationBlock.h"
#include "mozilla/EventListenerManager.h"
#include "mozilla/InternalMutationEvent.h"
#include "mozilla/PresShell.h"
#include "mozilla/RestyleManager.h"
#include "mozilla/SMILAnimationController.h"
#include "mozilla/StaticPrefs_layout.h"
#include "mozilla/SVGContentUtils.h"
#include "mozilla/SVGObserverUtils.h"
#include "mozilla/Unused.h"
#include "mozAutoDocUpdate.h"
#include "nsAttrValueOrString.h"
#include "nsCSSProps.h"
#include "nsCSSValue.h"
#include "nsContentUtils.h"
#include "nsDOMCSSAttrDeclaration.h"
#include "nsICSSDeclaration.h"
#include "nsIContentInlines.h"
#include "mozilla/dom/Document.h"
#include "nsError.h"
#include "nsGkAtoms.h"
#include "nsIFrame.h"
#include "nsQueryObject.h"
#include "nsLayoutUtils.h"
#include "SVGAnimatedNumberList.h"
#include "SVGAnimatedLengthList.h"
#include "SVGAnimatedPointList.h"
#include "SVGAnimatedPathSegList.h"
#include "SVGAnimatedTransformList.h"
#include "SVGAnimatedBoolean.h"
#include "SVGAnimatedEnumeration.h"
#include "SVGAnimatedInteger.h"
#include "SVGAnimatedIntegerPair.h"
#include "SVGAnimatedLength.h"
#include "SVGAnimatedNumber.h"
#include "SVGAnimatedNumberPair.h"
#include "SVGAnimatedOrient.h"
#include "SVGAnimatedString.h"
#include "SVGAnimatedViewBox.h"
#include "SVGGeometryProperty.h"
#include "SVGMotionSMILAttr.h"
#include <stdarg.h>
// This is needed to ensure correct handling of calls to the
// vararg-list methods in this file:
// SVGElement::GetAnimated{Length,Number,Integer}Values
// See bug 547964 for details:
static_assert(sizeof(void*) == sizeof(nullptr),
"nullptr should be the correct size");
nsresult NS_NewSVGElement(
mozilla::dom::Element** aResult,
already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo) {
RefPtr<mozilla::dom::NodeInfo> nodeInfo(aNodeInfo);
auto* nim = nodeInfo->NodeInfoManager();
RefPtr<mozilla::dom::SVGElement> it =
new (nim) mozilla::dom::SVGElement(nodeInfo.forget());
nsresult rv = it->Init();
if (NS_FAILED(rv)) {
return rv;
}
it.forget(aResult);
return rv;
}
namespace mozilla::dom {
using namespace SVGUnitTypes_Binding;
NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGElement)
// Use the CC variant of this, even though this class does not define
// a new CC participant, to make QIing to the CC interfaces faster.
NS_IMPL_QUERY_INTERFACE_CYCLE_COLLECTION_INHERITED(SVGElement, SVGElementBase,
SVGElement)
SVGEnumMapping SVGElement::sSVGUnitTypesMap[] = {
{nsGkAtoms::userSpaceOnUse, SVG_UNIT_TYPE_USERSPACEONUSE},
{nsGkAtoms::objectBoundingBox, SVG_UNIT_TYPE_OBJECTBOUNDINGBOX},
{nullptr, 0}};
SVGElement::SVGElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
: SVGElementBase(std::move(aNodeInfo)) {}
SVGElement::~SVGElement() = default;
JSObject* SVGElement::WrapNode(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return SVGElement_Binding::Wrap(aCx, this, aGivenProto);
}
template <typename Value, typename Info>
void SVGElement::AttributesInfo<Value, Info>::ResetAll() {
for (uint32_t i = 0; i < mCount; ++i) {
Reset(i);
}
}
template <typename Value, typename Info>
void SVGElement::AttributesInfo<Value, Info>::CopyAllFrom(
const AttributesInfo& aOther) {
MOZ_DIAGNOSTIC_ASSERT(mCount == aOther.mCount,
"Should only be called on clones");
for (uint32_t i = 0; i < mCount; ++i) {
mValues[i] = aOther.mValues[i];
}
}
template <>
void SVGElement::LengthAttributesInfo::Reset(uint8_t aAttrEnum) {
mValues[aAttrEnum].Init(mInfos[aAttrEnum].mCtxType, aAttrEnum,
mInfos[aAttrEnum].mDefaultValue,
mInfos[aAttrEnum].mDefaultUnitType);
}
template <>
void SVGElement::LengthListAttributesInfo::Reset(uint8_t aAttrEnum) {
mValues[aAttrEnum].ClearBaseValue(aAttrEnum);
// caller notifies
}
template <>
void SVGElement::NumberListAttributesInfo::Reset(uint8_t aAttrEnum) {
MOZ_ASSERT(aAttrEnum < mCount, "Bad attr enum");
mValues[aAttrEnum].ClearBaseValue(aAttrEnum);
// caller notifies
}
template <>
void SVGElement::NumberAttributesInfo::Reset(uint8_t aAttrEnum) {
mValues[aAttrEnum].Init(aAttrEnum, mInfos[aAttrEnum].mDefaultValue);
}
template <>
void SVGElement::NumberPairAttributesInfo::Reset(uint8_t aAttrEnum) {
mValues[aAttrEnum].Init(aAttrEnum, mInfos[aAttrEnum].mDefaultValue1,
mInfos[aAttrEnum].mDefaultValue2);
}
template <>
void SVGElement::IntegerAttributesInfo::Reset(uint8_t aAttrEnum) {
mValues[aAttrEnum].Init(aAttrEnum, mInfos[aAttrEnum].mDefaultValue);
}
template <>
void SVGElement::IntegerPairAttributesInfo::Reset(uint8_t aAttrEnum) {
mValues[aAttrEnum].Init(aAttrEnum, mInfos[aAttrEnum].mDefaultValue1,
mInfos[aAttrEnum].mDefaultValue2);
}
template <>
void SVGElement::BooleanAttributesInfo::Reset(uint8_t aAttrEnum) {
mValues[aAttrEnum].Init(aAttrEnum, mInfos[aAttrEnum].mDefaultValue);
}
template <>
void SVGElement::StringListAttributesInfo::Reset(uint8_t aAttrEnum) {
mValues[aAttrEnum].Clear();
// caller notifies
}
template <>
void SVGElement::EnumAttributesInfo::Reset(uint8_t aAttrEnum) {
mValues[aAttrEnum].Init(aAttrEnum, mInfos[aAttrEnum].mDefaultValue);
}
template <>
void SVGElement::StringAttributesInfo::Reset(uint8_t aAttrEnum) {
mValues[aAttrEnum].Init(aAttrEnum);
}
nsresult SVGElement::CopyInnerTo(mozilla::dom::Element* aDest) {
nsresult rv = Element::CopyInnerTo(aDest);
NS_ENSURE_SUCCESS(rv, rv);
auto* dest = static_cast<SVGElement*>(aDest);
// cloning a node must retain its internal nonce slot
if (auto* nonce = static_cast<nsString*>(GetProperty(nsGkAtoms::nonce))) {
dest->SetNonce(*nonce);
}
// If our destination is a print document, copy all the relevant length values
// etc so that they match the state of the original node.
if (aDest->OwnerDoc()->IsStaticDocument() ||
aDest->OwnerDoc()->CloningForSVGUse()) {
LengthAttributesInfo lengthInfo = GetLengthInfo();
dest->GetLengthInfo().CopyAllFrom(lengthInfo);
if (SVGGeometryProperty::ElementMapsLengthsToStyle(this)) {
for (uint32_t i = 0; i < lengthInfo.mCount; i++) {
nsCSSPropertyID propId =
SVGGeometryProperty::AttrEnumToCSSPropId(this, i);
// We don't map use element width/height currently. We can remove this
// test when we do.
if (propId != eCSSProperty_UNKNOWN &&
lengthInfo.mValues[i].IsAnimated()) {
dest->SMILOverrideStyle()->SetSMILValue(propId,
lengthInfo.mValues[i]);
}
}
}
dest->GetNumberInfo().CopyAllFrom(GetNumberInfo());
dest->GetNumberPairInfo().CopyAllFrom(GetNumberPairInfo());
dest->GetIntegerInfo().CopyAllFrom(GetIntegerInfo());
dest->GetIntegerPairInfo().CopyAllFrom(GetIntegerPairInfo());
dest->GetBooleanInfo().CopyAllFrom(GetBooleanInfo());
if (const auto* orient = GetAnimatedOrient()) {
*dest->GetAnimatedOrient() = *orient;
}
if (const auto* viewBox = GetAnimatedViewBox()) {
*dest->GetAnimatedViewBox() = *viewBox;
}
if (const auto* preserveAspectRatio = GetAnimatedPreserveAspectRatio()) {
*dest->GetAnimatedPreserveAspectRatio() = *preserveAspectRatio;
}
dest->GetEnumInfo().CopyAllFrom(GetEnumInfo());
dest->GetStringInfo().CopyAllFrom(GetStringInfo());
dest->GetLengthListInfo().CopyAllFrom(GetLengthListInfo());
dest->GetNumberListInfo().CopyAllFrom(GetNumberListInfo());
if (const auto* pointList = GetAnimatedPointList()) {
*dest->GetAnimatedPointList() = *pointList;
}
if (const auto* pathSegList = GetAnimPathSegList()) {
*dest->GetAnimPathSegList() = *pathSegList;
if (pathSegList->IsAnimating()) {
dest->SMILOverrideStyle()->SetSMILValue(nsCSSPropertyID::eCSSProperty_d,
*pathSegList);
}
}
if (const auto* transformList = GetAnimatedTransformList()) {
*dest->GetAnimatedTransformList(DO_ALLOCATE) = *transformList;
}
if (const auto* animateMotionTransform = GetAnimateMotionTransform()) {
dest->SetAnimateMotionTransform(animateMotionTransform);
}
if (const auto* smilOverrideStyleDecoration =
GetSMILOverrideStyleDeclaration()) {
RefPtr<DeclarationBlock> declClone = smilOverrideStyleDecoration->Clone();
declClone->SetDirty();
dest->SetSMILOverrideStyleDeclaration(*declClone);
}
}
return NS_OK;
}
//----------------------------------------------------------------------
// SVGElement methods
void SVGElement::DidAnimateClass() {
// For Servo, snapshot the element before we change it.
PresShell* presShell = OwnerDoc()->GetPresShell();
if (presShell) {
if (nsPresContext* presContext = presShell->GetPresContext()) {
presContext->RestyleManager()->ClassAttributeWillBeChangedBySMIL(this);
}
}
nsAutoString src;
mClassAttribute.GetAnimValue(src, this);
if (!mClassAnimAttr) {
mClassAnimAttr = MakeUnique<nsAttrValue>();
}
mClassAnimAttr->ParseAtomArray(src);
// FIXME(emilio): This re-selector-matches, but we do the snapshot stuff right
// above... Is this needed anymore?
if (presShell) {
presShell->RestyleForAnimation(this, RestyleHint::RESTYLE_SELF);
}
DidAnimateAttribute(kNameSpaceID_None, nsGkAtoms::_class);
}
nsresult SVGElement::Init() {
// Set up length attributes - can't do this in the constructor
// because we can't do a virtual call at that point
GetLengthInfo().ResetAll();
GetNumberInfo().ResetAll();
GetNumberPairInfo().ResetAll();
GetIntegerInfo().ResetAll();
GetIntegerPairInfo().ResetAll();
GetBooleanInfo().ResetAll();
GetEnumInfo().ResetAll();
if (SVGAnimatedOrient* orient = GetAnimatedOrient()) {
orient->Init();
}
if (SVGAnimatedViewBox* viewBox = GetAnimatedViewBox()) {
viewBox->Init();
}
if (SVGAnimatedPreserveAspectRatio* preserveAspectRatio =
GetAnimatedPreserveAspectRatio()) {
preserveAspectRatio->Init();
}
GetLengthListInfo().ResetAll();
GetNumberListInfo().ResetAll();
// No need to reset SVGPointList since the default value is always the same
// (an empty list).
// No need to reset SVGPathData since the default value is always the same
// (an empty list).
GetStringInfo().ResetAll();
return NS_OK;
}
//----------------------------------------------------------------------
// Implementation
//----------------------------------------------------------------------
// nsIContent methods
nsresult SVGElement::BindToTree(BindContext& aContext, nsINode& aParent) {
nsresult rv = SVGElementBase::BindToTree(aContext, aParent);
NS_ENSURE_SUCCESS(rv, rv);
// Hide any nonce from the DOM, but keep the internal value of the
// nonce by copying and resetting the internal nonce value.
if (HasFlag(NODE_HAS_NONCE_AND_HEADER_CSP) && IsInComposedDoc() &&
OwnerDoc()->GetBrowsingContext()) {
nsContentUtils::AddScriptRunner(NS_NewRunnableFunction(
"SVGElement::ResetNonce::Runnable",
[self = RefPtr<SVGElement>(this)]() {
nsAutoString nonce;
self->GetNonce(nonce);
self->SetAttr(kNameSpaceID_None, nsGkAtoms::nonce, u""_ns, true);
self->SetNonce(nonce);
}));
}
return NS_OK;
}
void SVGElement::AfterSetAttr(int32_t aNamespaceID, nsAtom* aName,
const nsAttrValue* aValue,
const nsAttrValue* aOldValue,
nsIPrincipal* aSubjectPrincipal, bool aNotify) {
if (IsEventAttributeName(aName) && aValue) {
MOZ_ASSERT(aValue->Type() == nsAttrValue::eString,
"Expected string value for script body");
SetEventHandler(GetEventNameForAttr(aName), aValue->GetStringValue());
}
// The nonce will be copied over to an internal slot and cleared from the
// Element within BindToTree to avoid CSS Selector nonce exfiltration if
// the CSP list contains a header-delivered CSP.
if (nsGkAtoms::nonce == aName && kNameSpaceID_None == aNamespaceID) {
if (aValue) {
SetNonce(aValue->GetStringValue());
if (OwnerDoc()->GetHasCSPDeliveredThroughHeader()) {
SetFlags(NODE_HAS_NONCE_AND_HEADER_CSP);
}
} else {
RemoveNonce();
}
}
return SVGElementBase::AfterSetAttr(aNamespaceID, aName, aValue, aOldValue,
aSubjectPrincipal, aNotify);
}
bool SVGElement::ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
const nsAString& aValue,
nsIPrincipal* aMaybeScriptedPrincipal,
nsAttrValue& aResult) {
nsresult rv = NS_OK;
bool foundMatch = false;
bool didSetResult = false;
if (aNamespaceID == kNameSpaceID_None) {
// Check for SVGAnimatedLength attribute
LengthAttributesInfo lengthInfo = GetLengthInfo();
uint32_t i;
for (i = 0; i < lengthInfo.mCount; i++) {
if (aAttribute == lengthInfo.mInfos[i].mName) {
rv = lengthInfo.mValues[i].SetBaseValueString(aValue, this, false);
if (NS_FAILED(rv)) {
lengthInfo.Reset(i);
} else {
aResult.SetTo(lengthInfo.mValues[i], &aValue);
didSetResult = true;
}
foundMatch = true;
break;
}
}
if (!foundMatch) {
// Check for SVGAnimatedLengthList attribute
LengthListAttributesInfo lengthListInfo = GetLengthListInfo();
for (i = 0; i < lengthListInfo.mCount; i++) {
if (aAttribute == lengthListInfo.mInfos[i].mName) {
rv = lengthListInfo.mValues[i].SetBaseValueString(aValue);
if (NS_FAILED(rv)) {
lengthListInfo.Reset(i);
} else {
aResult.SetTo(lengthListInfo.mValues[i].GetBaseValue(), &aValue);
didSetResult = true;
}
foundMatch = true;
break;
}
}
}
if (!foundMatch) {
// Check for SVGAnimatedNumberList attribute
NumberListAttributesInfo numberListInfo = GetNumberListInfo();
for (i = 0; i < numberListInfo.mCount; i++) {
if (aAttribute == numberListInfo.mInfos[i].mName) {
rv = numberListInfo.mValues[i].SetBaseValueString(aValue);
if (NS_FAILED(rv)) {
numberListInfo.Reset(i);
} else {
aResult.SetTo(numberListInfo.mValues[i].GetBaseValue(), &aValue);
didSetResult = true;
}
foundMatch = true;
break;
}
}
}
if (!foundMatch) {
// Check for SVGAnimatedPointList attribute
if (GetPointListAttrName() == aAttribute) {
if (SVGAnimatedPointList* pointList = GetAnimatedPointList()) {
pointList->SetBaseValueString(aValue);
// The spec says we parse everything up to the failure, so we DON'T
// need to check the result of SetBaseValueString or call
// pointList->ClearBaseValue() if it fails
aResult.SetTo(pointList->GetBaseValue(), &aValue);
didSetResult = true;
foundMatch = true;
}
}
}
if (!foundMatch) {
// Check for SVGAnimatedPathSegList attribute
if (GetPathDataAttrName() == aAttribute) {
if (SVGAnimatedPathSegList* segList = GetAnimPathSegList()) {
segList->SetBaseValueString(aValue);
// The spec says we parse everything up to the failure, so we DON'T
// need to check the result of SetBaseValueString or call
// segList->ClearBaseValue() if it fails
aResult.SetTo(segList->GetBaseValue(), &aValue);
didSetResult = true;
foundMatch = true;
}
}
}
if (!foundMatch) {
// Check for SVGAnimatedNumber attribute
NumberAttributesInfo numberInfo = GetNumberInfo();
for (i = 0; i < numberInfo.mCount; i++) {
if (aAttribute == numberInfo.mInfos[i].mName) {
rv = numberInfo.mValues[i].SetBaseValueString(aValue, this);
if (NS_FAILED(rv)) {
numberInfo.Reset(i);
} else {
aResult.SetTo(numberInfo.mValues[i].GetBaseValue(), &aValue);
didSetResult = true;
}
foundMatch = true;
break;
}
}
}
if (!foundMatch) {
// Check for SVGAnimatedNumberPair attribute
NumberPairAttributesInfo numberPairInfo = GetNumberPairInfo();
for (i = 0; i < numberPairInfo.mCount; i++) {
if (aAttribute == numberPairInfo.mInfos[i].mName) {
rv = numberPairInfo.mValues[i].SetBaseValueString(aValue, this);
if (NS_FAILED(rv)) {
numberPairInfo.Reset(i);
} else {
aResult.SetTo(numberPairInfo.mValues[i], &aValue);
didSetResult = true;
}
foundMatch = true;
break;
}
}
}
if (!foundMatch) {
// Check for SVGAnimatedInteger attribute
IntegerAttributesInfo integerInfo = GetIntegerInfo();
for (i = 0; i < integerInfo.mCount; i++) {
if (aAttribute == integerInfo.mInfos[i].mName) {
rv = integerInfo.mValues[i].SetBaseValueString(aValue, this);
if (NS_FAILED(rv)) {
integerInfo.Reset(i);
} else {
aResult.SetTo(integerInfo.mValues[i].GetBaseValue(), &aValue);
didSetResult = true;
}
foundMatch = true;
break;
}
}
}
if (!foundMatch) {
// Check for SVGAnimatedIntegerPair attribute
IntegerPairAttributesInfo integerPairInfo = GetIntegerPairInfo();
for (i = 0; i < integerPairInfo.mCount; i++) {
if (aAttribute == integerPairInfo.mInfos[i].mName) {
rv = integerPairInfo.mValues[i].SetBaseValueString(aValue, this);
if (NS_FAILED(rv)) {
integerPairInfo.Reset(i);
} else {
aResult.SetTo(integerPairInfo.mValues[i], &aValue);
didSetResult = true;
}
foundMatch = true;
break;
}
}
}
if (!foundMatch) {
// Check for SVGAnimatedBoolean attribute
BooleanAttributesInfo booleanInfo = GetBooleanInfo();
for (i = 0; i < booleanInfo.mCount; i++) {
if (aAttribute == booleanInfo.mInfos[i].mName) {
nsAtom* valAtom = NS_GetStaticAtom(aValue);
rv = valAtom ? booleanInfo.mValues[i].SetBaseValueAtom(valAtom, this)
: NS_ERROR_DOM_SYNTAX_ERR;
if (NS_FAILED(rv)) {
booleanInfo.Reset(i);
} else {
aResult.SetTo(valAtom);
didSetResult = true;
}
foundMatch = true;
break;
}
}
}
if (!foundMatch) {
// Check for SVGAnimatedEnumeration attribute
EnumAttributesInfo enumInfo = GetEnumInfo();
for (i = 0; i < enumInfo.mCount; i++) {
if (aAttribute == enumInfo.mInfos[i].mName) {
RefPtr<nsAtom> valAtom = NS_Atomize(aValue);
if (!enumInfo.mValues[i].SetBaseValueAtom(valAtom, this)) {
// Exact error value does not matter; we just need to mark the
// parse as failed.
rv = NS_ERROR_FAILURE;
enumInfo.Reset(i);
} else {
aResult.SetTo(valAtom);
didSetResult = true;
}
foundMatch = true;
break;
}
}
}
if (!foundMatch) {
// Check for conditional processing attributes
nsCOMPtr<SVGTests> tests = do_QueryObject(this);
if (tests && tests->ParseConditionalProcessingAttribute(
aAttribute, aValue, aResult)) {
foundMatch = true;
}
}
if (!foundMatch) {
// Check for StringList attribute
StringListAttributesInfo stringListInfo = GetStringListInfo();
for (i = 0; i < stringListInfo.mCount; i++) {
if (aAttribute == stringListInfo.mInfos[i].mName) {
rv = stringListInfo.mValues[i].SetValue(aValue);
if (NS_FAILED(rv)) {
stringListInfo.Reset(i);
} else {
aResult.SetTo(stringListInfo.mValues[i], &aValue);
didSetResult = true;
}
foundMatch = true;
break;
}
}
}
if (!foundMatch) {
// Check for orient attribute
if (aAttribute == nsGkAtoms::orient) {
SVGAnimatedOrient* orient = GetAnimatedOrient();
if (orient) {
rv = orient->SetBaseValueString(aValue, this, false);
if (NS_FAILED(rv)) {
orient->Init();
} else {
aResult.SetTo(*orient, &aValue);
didSetResult = true;
}
foundMatch = true;
}
// Check for viewBox attribute
} else if (aAttribute == nsGkAtoms::viewBox) {
SVGAnimatedViewBox* viewBox = GetAnimatedViewBox();
if (viewBox) {
rv = viewBox->SetBaseValueString(aValue, this, false);
if (NS_FAILED(rv)) {
viewBox->Init();
} else {
aResult.SetTo(*viewBox, &aValue);
didSetResult = true;
}
foundMatch = true;
}
// Check for preserveAspectRatio attribute
} else if (aAttribute == nsGkAtoms::preserveAspectRatio) {
SVGAnimatedPreserveAspectRatio* preserveAspectRatio =
GetAnimatedPreserveAspectRatio();
if (preserveAspectRatio) {
rv = preserveAspectRatio->SetBaseValueString(aValue, this, false);
if (NS_FAILED(rv)) {
preserveAspectRatio->Init();
} else {
aResult.SetTo(*preserveAspectRatio, &aValue);
didSetResult = true;
}
foundMatch = true;
}
// Check for SVGAnimatedTransformList attribute
} else if (GetTransformListAttrName() == aAttribute) {
// The transform attribute is being set, so we must ensure that the
// SVGAnimatedTransformList is/has been allocated:
SVGAnimatedTransformList* transformList =
GetAnimatedTransformList(DO_ALLOCATE);
rv = transformList->SetBaseValueString(aValue, this);
if (NS_FAILED(rv)) {
transformList->ClearBaseValue();
} else {
aResult.SetTo(transformList->GetBaseValue(), &aValue);
didSetResult = true;
}
foundMatch = true;
} else if (aAttribute == nsGkAtoms::tabindex) {
didSetResult = aResult.ParseIntValue(aValue);
foundMatch = true;
}
}
if (aAttribute == nsGkAtoms::_class) {
mClassAttribute.SetBaseValue(aValue, this, false);
aResult.ParseAtomArray(aValue);
return true;
}
if (aAttribute == nsGkAtoms::rel) {
aResult.ParseAtomArray(aValue);
return true;
}
}
if (!foundMatch) {
// Check for SVGAnimatedString attribute
StringAttributesInfo stringInfo = GetStringInfo();
for (uint32_t i = 0; i < stringInfo.mCount; i++) {
if (aNamespaceID == stringInfo.mInfos[i].mNamespaceID &&
aAttribute == stringInfo.mInfos[i].mName) {
stringInfo.mValues[i].SetBaseValue(aValue, this, false);
foundMatch = true;
break;
}
}
}
if (foundMatch) {
if (NS_FAILED(rv)) {
ReportAttributeParseFailure(OwnerDoc(), aAttribute, aValue);
return false;
}
if (!didSetResult) {
aResult.SetTo(aValue);
}
return true;
}
return SVGElementBase::ParseAttribute(aNamespaceID, aAttribute, aValue,
aMaybeScriptedPrincipal, aResult);
}
void SVGElement::UnsetAttrInternal(int32_t aNamespaceID, nsAtom* aName,
bool aNotify) {
// XXXbz there's a bunch of redundancy here with AfterSetAttr.
// Maybe consolidate?
if (aNamespaceID == kNameSpaceID_None) {
if (IsEventAttributeName(aName)) {
EventListenerManager* manager = GetExistingListenerManager();
if (manager) {
nsAtom* eventName = GetEventNameForAttr(aName);
manager->RemoveEventHandler(eventName);
}
return;
}
// Check if this is a length attribute going away
LengthAttributesInfo lenInfo = GetLengthInfo();
for (uint32_t i = 0; i < lenInfo.mCount; i++) {
if (aName == lenInfo.mInfos[i].mName) {
MaybeSerializeAttrBeforeRemoval(aName, aNotify);
lenInfo.Reset(i);
return;
}
}
// Check if this is a length list attribute going away
LengthListAttributesInfo lengthListInfo = GetLengthListInfo();
for (uint32_t i = 0; i < lengthListInfo.mCount; i++) {
if (aName == lengthListInfo.mInfos[i].mName) {
MaybeSerializeAttrBeforeRemoval(aName, aNotify);
lengthListInfo.Reset(i);
return;
}
}
// Check if this is a number list attribute going away
NumberListAttributesInfo numberListInfo = GetNumberListInfo();
for (uint32_t i = 0; i < numberListInfo.mCount; i++) {
if (aName == numberListInfo.mInfos[i].mName) {
MaybeSerializeAttrBeforeRemoval(aName, aNotify);
numberListInfo.Reset(i);
return;
}
}
// Check if this is a point list attribute going away
if (GetPointListAttrName() == aName) {
SVGAnimatedPointList* pointList = GetAnimatedPointList();
if (pointList) {
MaybeSerializeAttrBeforeRemoval(aName, aNotify);
pointList->ClearBaseValue();
return;
}
}
// Check if this is a path segment list attribute going away
if (GetPathDataAttrName() == aName) {
SVGAnimatedPathSegList* segList = GetAnimPathSegList();
if (segList) {
MaybeSerializeAttrBeforeRemoval(aName, aNotify);
segList->ClearBaseValue();
return;
}
}
// Check if this is a number attribute going away
NumberAttributesInfo numInfo = GetNumberInfo();
for (uint32_t i = 0; i < numInfo.mCount; i++) {
if (aName == numInfo.mInfos[i].mName) {
numInfo.Reset(i);
return;
}
}
// Check if this is a number pair attribute going away
NumberPairAttributesInfo numPairInfo = GetNumberPairInfo();
for (uint32_t i = 0; i < numPairInfo.mCount; i++) {
if (aName == numPairInfo.mInfos[i].mName) {
MaybeSerializeAttrBeforeRemoval(aName, aNotify);
numPairInfo.Reset(i);
return;
}
}
// Check if this is an integer attribute going away
IntegerAttributesInfo intInfo = GetIntegerInfo();
for (uint32_t i = 0; i < intInfo.mCount; i++) {
if (aName == intInfo.mInfos[i].mName) {
intInfo.Reset(i);
return;
}
}
// Check if this is an integer pair attribute going away
IntegerPairAttributesInfo intPairInfo = GetIntegerPairInfo();
for (uint32_t i = 0; i < intPairInfo.mCount; i++) {
if (aName == intPairInfo.mInfos[i].mName) {
MaybeSerializeAttrBeforeRemoval(aName, aNotify);
intPairInfo.Reset(i);
return;
}
}
// Check if this is a boolean attribute going away
BooleanAttributesInfo boolInfo = GetBooleanInfo();
for (uint32_t i = 0; i < boolInfo.mCount; i++) {
if (aName == boolInfo.mInfos[i].mName) {
boolInfo.Reset(i);
return;
}
}
// Check if this is an enum attribute going away
EnumAttributesInfo enumInfo = GetEnumInfo();
for (uint32_t i = 0; i < enumInfo.mCount; i++) {
if (aName == enumInfo.mInfos[i].mName) {
enumInfo.Reset(i);
return;
}
}
// Check if this is an orient attribute going away
if (aName == nsGkAtoms::orient) {
SVGAnimatedOrient* orient = GetAnimatedOrient();
if (orient) {
MaybeSerializeAttrBeforeRemoval(aName, aNotify);
orient->Init();
return;
}
}
// Check if this is a viewBox attribute going away
if (aName == nsGkAtoms::viewBox) {
SVGAnimatedViewBox* viewBox = GetAnimatedViewBox();
if (viewBox) {
MaybeSerializeAttrBeforeRemoval(aName, aNotify);
viewBox->Init();
return;
}
}
// Check if this is a preserveAspectRatio attribute going away
if (aName == nsGkAtoms::preserveAspectRatio) {
SVGAnimatedPreserveAspectRatio* preserveAspectRatio =
GetAnimatedPreserveAspectRatio();
if (preserveAspectRatio) {
MaybeSerializeAttrBeforeRemoval(aName, aNotify);
preserveAspectRatio->Init();
return;
}
}
// Check if this is a transform list attribute going away
if (GetTransformListAttrName() == aName) {
SVGAnimatedTransformList* transformList = GetAnimatedTransformList();
if (transformList) {
MaybeSerializeAttrBeforeRemoval(aName, aNotify);
transformList->ClearBaseValue();
return;
}
}
// Check for conditional processing attributes
nsCOMPtr<SVGTests> tests = do_QueryObject(this);
if (tests && tests->IsConditionalProcessingAttribute(aName)) {
MaybeSerializeAttrBeforeRemoval(aName, aNotify);
tests->UnsetAttr(aName);
return;
}
// Check if this is a string list attribute going away
StringListAttributesInfo stringListInfo = GetStringListInfo();
for (uint32_t i = 0; i < stringListInfo.mCount; i++) {
if (aName == stringListInfo.mInfos[i].mName) {
MaybeSerializeAttrBeforeRemoval(aName, aNotify);
stringListInfo.Reset(i);
return;
}
}
if (aName == nsGkAtoms::_class) {
mClassAttribute.Init();
return;
}
}
// Check if this is a string attribute going away
StringAttributesInfo stringInfo = GetStringInfo();
for (uint32_t i = 0; i < stringInfo.mCount; i++) {
if (aNamespaceID == stringInfo.mInfos[i].mNamespaceID &&
aName == stringInfo.mInfos[i].mName) {
stringInfo.Reset(i);
return;
}
}
}
void SVGElement::BeforeSetAttr(int32_t aNamespaceID, nsAtom* aName,
const nsAttrValue* aValue, bool aNotify) {
if (!aValue) {
UnsetAttrInternal(aNamespaceID, aName, aNotify);
}
return SVGElementBase::BeforeSetAttr(aNamespaceID, aName, aValue, aNotify);
}
nsChangeHint SVGElement::GetAttributeChangeHint(const nsAtom* aAttribute,
int32_t aModType) const {
nsChangeHint retval =
SVGElementBase::GetAttributeChangeHint(aAttribute, aModType);
nsCOMPtr<SVGTests> tests = do_QueryObject(const_cast<SVGElement*>(this));
if (tests && tests->IsConditionalProcessingAttribute(aAttribute)) {
// It would be nice to only reconstruct the frame if the value returned by
// SVGTests::PassesConditionalProcessingTests has changed, but we don't
// know that
retval |= nsChangeHint_ReconstructFrame;
}
return retval;
}
void SVGElement::NodeInfoChanged(Document* aOldDoc) {
SVGElementBase::NodeInfoChanged(aOldDoc);
}
NS_IMETHODIMP_(bool)
SVGElement::IsAttributeMapped(const nsAtom* name) const {
if (name == nsGkAtoms::lang) {
return true;
}
if (IsSVGAnimationElement()) {
return SVGElementBase::IsAttributeMapped(name);
}
static const MappedAttributeEntry attributes[] = {
// Properties that we don't support are commented out.
// { nsGkAtoms::alignment_baseline },
// { nsGkAtoms::baseline_shift },
{nsGkAtoms::clip},
{nsGkAtoms::clip_path},
{nsGkAtoms::clip_rule},
{nsGkAtoms::color},
{nsGkAtoms::colorInterpolation},
{nsGkAtoms::colorInterpolationFilters},
{nsGkAtoms::cursor},
{nsGkAtoms::direction},
{nsGkAtoms::display},
{nsGkAtoms::dominant_baseline},
{nsGkAtoms::fill},
{nsGkAtoms::fill_opacity},
{nsGkAtoms::fill_rule},
{nsGkAtoms::filter},
{nsGkAtoms::flood_color},
{nsGkAtoms::flood_opacity},
{nsGkAtoms::font_family},
{nsGkAtoms::font_size},
{nsGkAtoms::font_size_adjust},
{nsGkAtoms::font_stretch},
{nsGkAtoms::font_style},
{nsGkAtoms::font_variant},
{nsGkAtoms::fontWeight},
{nsGkAtoms::image_rendering},
{nsGkAtoms::letter_spacing},
{nsGkAtoms::lighting_color},
{nsGkAtoms::marker_end},
{nsGkAtoms::marker_mid},
{nsGkAtoms::marker_start},
{nsGkAtoms::mask},
{nsGkAtoms::mask_type},
{nsGkAtoms::opacity},
{nsGkAtoms::overflow},
{nsGkAtoms::paint_order},
{nsGkAtoms::pointer_events},
{nsGkAtoms::shape_rendering},
{nsGkAtoms::stop_color},
{nsGkAtoms::stop_opacity},
{nsGkAtoms::stroke},
{nsGkAtoms::stroke_dasharray},
{nsGkAtoms::stroke_dashoffset},
{nsGkAtoms::stroke_linecap},
{nsGkAtoms::stroke_linejoin},
{nsGkAtoms::stroke_miterlimit},
{nsGkAtoms::stroke_opacity},
{nsGkAtoms::stroke_width},
{nsGkAtoms::text_anchor},
{nsGkAtoms::text_decoration},
{nsGkAtoms::text_rendering},
{nsGkAtoms::transform_origin},
{nsGkAtoms::unicode_bidi},
{nsGkAtoms::vector_effect},
{nsGkAtoms::visibility},
{nsGkAtoms::white_space},
{nsGkAtoms::word_spacing},
{nsGkAtoms::writing_mode},
{nullptr}};
static const MappedAttributeEntry* const map[] = {attributes};
return FindAttributeDependence(name, map) ||
SVGElementBase::IsAttributeMapped(name);
}
//----------------------------------------------------------------------
// Element methods
// forwarded to Element implementations
//----------------------------------------------------------------------
SVGSVGElement* SVGElement::GetOwnerSVGElement() {
nsIContent* ancestor = GetFlattenedTreeParent();
while (ancestor && ancestor->IsSVGElement()) {
if (ancestor->IsSVGElement(nsGkAtoms::foreignObject)) {
return nullptr;
}
if (auto* svg = SVGSVGElement::FromNode(ancestor)) {
return svg;
}
ancestor = ancestor->GetFlattenedTreeParent();
}
// we don't have an ancestor <svg> element...
return nullptr;
}
SVGElement* SVGElement::GetViewportElement() {
return SVGContentUtils::GetNearestViewportElement(this);
}
already_AddRefed<DOMSVGAnimatedString> SVGElement::ClassName() {
return mClassAttribute.ToDOMAnimatedString(this);
}
/* static */
bool SVGElement::UpdateDeclarationBlockFromLength(
StyleLockedDeclarationBlock& aBlock, nsCSSPropertyID aPropId,
const SVGAnimatedLength& aLength, ValToUse aValToUse) {
float value;
uint8_t units;
if (aValToUse == ValToUse::Anim) {
value = aLength.GetAnimValInSpecifiedUnits();
units = aLength.GetAnimUnitType();
} else {
MOZ_ASSERT(aValToUse == ValToUse::Base);
value = aLength.GetBaseValInSpecifiedUnits();
units = aLength.GetBaseUnitType();
}
// SVG parser doesn't check non-negativity of some parsed value, we should not
// pass those to CSS side.
if (value < 0 &&
SVGGeometryProperty::IsNonNegativeGeometryProperty(aPropId)) {
return false;
}
nsCSSUnit cssUnit = SVGLength::SpecifiedUnitTypeToCSSUnit(units);
if (cssUnit == eCSSUnit_Percent) {
Servo_DeclarationBlock_SetPercentValue(&aBlock, aPropId, value / 100.f);
} else {
Servo_DeclarationBlock_SetLengthValue(&aBlock, aPropId, value, cssUnit);
}
return true;
}
/* static */
bool SVGElement::UpdateDeclarationBlockFromPath(
StyleLockedDeclarationBlock& aBlock, const SVGAnimatedPathSegList& aPath,
ValToUse aValToUse) {
const SVGPathData& pathData =
aValToUse == ValToUse::Anim ? aPath.GetAnimValue() : aPath.GetBaseValue();
// SVGPathData::mData is fallible but rust binding accepts nsTArray only, so
// we need to point to one or the other. Fortunately, fallible and infallible
// array types can be implicitly converted provided they are const.
//
// FIXME: here we just convert the data structure from cpp verion into rust
// version. We don't do any normalization for the path data from d attribute.
// Based on the current discussion of https://github.com/w3c/svgwg/issues/321,
// we may have to convert the relative commands into absolute commands.
// The normalization should be fixed in Bug 1489392. Besides, Bug 1714238
// will use the same data structure, so we may simplify this more.
const nsTArray<float>& asInFallibleArray = pathData.RawData();
Servo_DeclarationBlock_SetPathValue(&aBlock, eCSSProperty_d,
&asInFallibleArray);
return true;
}
//------------------------------------------------------------------------
// Helper class: MappedAttrParser, for parsing values of mapped attributes
namespace {
class MOZ_STACK_CLASS MappedAttrParser {
public:
explicit MappedAttrParser(SVGElement& aElement,
StyleLockedDeclarationBlock* aDecl)
: mElement(aElement), mDecl(aDecl) {
if (mDecl) {
Servo_DeclarationBlock_Clear(mDecl);
}
}
~MappedAttrParser() {
MOZ_ASSERT(!mDecl,
"If mDecl was initialized, it should have been returned via "
"TakeDeclarationBlock (and have its pointer cleared)");
};
// Parses a mapped attribute value.
void ParseMappedAttrValue(nsAtom* aMappedAttrName,
const nsAString& aMappedAttrValue);
void TellStyleAlreadyParsedResult(nsAtom const* aAtom,
SVGAnimatedLength const& aLength);
void TellStyleAlreadyParsedResult(const SVGAnimatedPathSegList& aPath);
// If we've parsed any values for mapped attributes, this method returns the
// already_AddRefed declaration block that incorporates the parsed values.
// Otherwise, this method returns null.
already_AddRefed<StyleLockedDeclarationBlock> TakeDeclarationBlock() {
return mDecl.forget();
}
StyleLockedDeclarationBlock& EnsureDeclarationBlock() {
if (!mDecl) {
mDecl = Servo_DeclarationBlock_CreateEmpty().Consume();
}
return *mDecl;
}
URLExtraData& EnsureExtraData() {
if (!mExtraData) {
mExtraData = mElement.GetURLDataForStyleAttr();
}
return *mExtraData;
}
private:
// For reporting use counters
SVGElement& mElement;
// Declaration for storing parsed values (lazily initialized).
RefPtr<StyleLockedDeclarationBlock> mDecl;
// URL data for parsing stuff. Also lazy.
RefPtr<URLExtraData> mExtraData;
};
void MappedAttrParser::ParseMappedAttrValue(nsAtom* aMappedAttrName,
const nsAString& aMappedAttrValue) {
// Get the nsCSSPropertyID ID for our mapped attribute.
nsCSSPropertyID propertyID =
nsCSSProps::LookupProperty(nsAutoAtomCString(aMappedAttrName));
if (propertyID != eCSSProperty_UNKNOWN) {
bool changed = false; // outparam for ParseProperty.
NS_ConvertUTF16toUTF8 value(aMappedAttrValue);
auto* doc = mElement.OwnerDoc();
changed = Servo_DeclarationBlock_SetPropertyById(
&EnsureDeclarationBlock(), propertyID, &value, false,
&EnsureExtraData(), StyleParsingMode::ALLOW_UNITLESS_LENGTH,
doc->GetCompatibilityMode(), doc->CSSLoader(), StyleCssRuleType::Style,
{});
// TODO(emilio): If we want to record these from CSSOM more generally, we
// can pass the document use counters down the FFI call. For now manually
// count them.
if (changed && StaticPrefs::layout_css_use_counters_enabled()) {
UseCounter useCounter = nsCSSProps::UseCounterFor(propertyID);
MOZ_ASSERT(useCounter != eUseCounter_UNKNOWN);
doc->SetUseCounter(useCounter);
}
return;
}
MOZ_ASSERT(aMappedAttrName == nsGkAtoms::lang,
"Only 'lang' should be unrecognized!");
// CSS parser doesn't know about 'lang', so we need to handle it specially.
if (aMappedAttrName == nsGkAtoms::lang) {
propertyID = eCSSProperty__x_lang;
RefPtr<nsAtom> atom = NS_Atomize(aMappedAttrValue);
Servo_DeclarationBlock_SetIdentStringValue(&EnsureDeclarationBlock(),
propertyID, atom);
}
}
void MappedAttrParser::TellStyleAlreadyParsedResult(
nsAtom const* aAtom, SVGAnimatedLength const& aLength) {
nsCSSPropertyID propertyID =
nsCSSProps::LookupProperty(nsAutoAtomCString(aAtom));
SVGElement::UpdateDeclarationBlockFromLength(EnsureDeclarationBlock(),
propertyID, aLength,
SVGElement::ValToUse::Base);
}
void MappedAttrParser::TellStyleAlreadyParsedResult(
const SVGAnimatedPathSegList& aPath) {
SVGElement::UpdateDeclarationBlockFromPath(EnsureDeclarationBlock(), aPath,
SVGElement::ValToUse::Base);
}
} // namespace
//----------------------------------------------------------------------
// Implementation Helpers:
void SVGElement::UpdateMappedDeclarationBlock() {
MOZ_ASSERT(IsPendingMappedAttributeEvaluation());
MappedAttrParser mappedAttrParser(*this, mAttrs.GetMappedDeclarationBlock());
const bool lengthAffectsStyle =
SVGGeometryProperty::ElementMapsLengthsToStyle(this);
uint32_t i = 0;
while (BorrowedAttrInfo info = GetAttrInfoAt(i++)) {
const nsAttrName* attrName = info.mName;
if (!attrName->IsAtom() || !IsAttributeMapped(attrName->Atom())) {
continue;
}
if (attrName->Atom() == nsGkAtoms::lang &&
HasAttr(kNameSpaceID_XML, nsGkAtoms::lang)) {
// xml:lang has precedence, and will get set via Gecko_GetXMLLangValue().
continue;
}
if (lengthAffectsStyle) {
auto const* length = GetAnimatedLength(attrName->Atom());
if (length && length->HasBaseVal()) {
// This is an element with geometry property set via SVG attribute,
// and the attribute is already successfully parsed. We want to go
// through the optimized path to tell the style system the result
// directly, rather than let it parse the same thing again.
mappedAttrParser.TellStyleAlreadyParsedResult(attrName->Atom(),
*length);
continue;
}
}
if (attrName->Equals(nsGkAtoms::d, kNameSpaceID_None)) {
const auto* path = GetAnimPathSegList();
// Note: Only SVGPathElement has d attribute.
MOZ_ASSERT(
path,
"SVGPathElement should have the non-null SVGAnimatedPathSegList");
// The attribute should have been already successfully parsed.
// We want to go through the optimized path to tell the style system
// the result directly, rather than let it parse the same thing again.
mappedAttrParser.TellStyleAlreadyParsedResult(*path);
// Some other notes:
// The syntax of CSS d property is different from SVG d attribute.
// 1. CSS d proeprty accepts: none | path(<quoted string>);
// 2. SVG d attribtue accepts: none | <string>
// So we cannot use css parser to parse the SVG d attribute directly.
// Besides, |mAttrs.AttrAt(i)| removes the quotes already, so the svg path
// in |mAttrs.AttrAt(i)| would be something like `M0,0L1,1z` without the
// quotes. So css tokenizer cannot recognize this as a quoted string, and
// so svg_path::SVGPathData::parse() doesn't work for this. Fortunately,
// we still can rely on the parsed result from
// SVGElement::ParseAttribute() for d attribute.
continue;
}
nsAutoString value;
info.mValue->ToString(value);
mappedAttrParser.ParseMappedAttrValue(attrName->Atom(), value);
}
mAttrs.SetMappedDeclarationBlock(mappedAttrParser.TakeDeclarationBlock());
}
/**
* Helper methods for the type-specific WillChangeXXX methods.
*
* This method sends out appropriate pre-change notifications so that selector
* restyles (e.g. due to changes that cause |elem[attr="val"]| to start/stop
* matching) work, and it returns an nsAttrValue that _may_ contain the
* attribute's pre-change value.
*
* The nsAttrValue returned by this method depends on whether there are
* mutation event listeners listening for changes to this element's attributes.
* If not, then the object returned is empty. If there are, then the
* nsAttrValue returned contains a serialized copy of the attribute's value
* prior to the change, and this object should be passed to the corresponding
* DidChangeXXX method call (assuming a WillChangeXXX call is required for the
* SVG type - see comment below). This is necessary so that the 'prevValue'
* property of the mutation event that is dispatched will correctly contain the
* old value.
*
* The reason we need to serialize the old value if there are mutation
* event listeners is because the underlying nsAttrValue for the attribute
* points directly to a parsed representation of the attribute (e.g. an
* SVGAnimatedLengthList*) that is a member of the SVG element. That object
* will have changed by the time DidChangeXXX has been called, so without the
* serialization of the old attribute value that we provide, DidChangeXXX
* would have no way to get the old value to pass to SetAttrAndNotify.
*
* We only return the old value when there are mutation event listeners because
* it's not needed otherwise, and because it's expensive to serialize the old
* value. This is especially true for list type attributes, which may be built
* up via the SVG DOM resulting in a large number of Will/DidModifyXXX calls
* before the script finally finishes setting the attribute.
*
* Note that unlike using SetParsedAttr, using Will/DidChangeXXX does NOT check
* and filter out redundant changes. Before calling WillChangeXXX, the caller
* should check whether the new and old values are actually the same, and skip
* calling Will/DidChangeXXX if they are.
*
* Also note that not all SVG types use this scheme. For types that can be
* represented by an nsAttrValue without pointing back to an SVG object (e.g.
* enums, booleans, integers) we can simply use SetParsedAttr which will do all
* of the above for us. For such types there is no matching WillChangeXXX
* method, only DidChangeXXX which calls SetParsedAttr.
*/
nsAttrValue SVGElement::WillChangeValue(
nsAtom* aName, const mozAutoDocUpdate& aProofOfUpdate) {
// We need an empty attr value:
// a) to pass to BeforeSetAttr when GetParsedAttr returns nullptr
// b) to store the old value in the case we have mutation listeners
//
// We can use the same value for both purposes, because if GetParsedAttr
// returns non-null its return value is what will get passed to BeforeSetAttr,
// not matter what our mutation listener situation is.
//
// Also, we should be careful to always return this value to benefit from
// return value optimization.
nsAttrValue emptyOrOldAttrValue;
const nsAttrValue* attrValue = GetParsedAttr(aName);
// We only need to set the old value if we have listeners since otherwise it
// isn't used.
if (attrValue && nsContentUtils::HasMutationListeners(
this, NS_EVENT_BITS_MUTATION_ATTRMODIFIED, this)) {
emptyOrOldAttrValue.SetToSerialized(*attrValue);
}
uint8_t modType =
attrValue ? static_cast<uint8_t>(MutationEvent_Binding::MODIFICATION)
: static_cast<uint8_t>(MutationEvent_Binding::ADDITION);
MutationObservers::NotifyAttributeWillChange(this, kNameSpaceID_None, aName,
modType);
// This is not strictly correct--the attribute value parameter for
// BeforeSetAttr should reflect the value that *will* be set but that implies
// allocating, e.g. an extra SVGAnimatedLength, and isn't necessary at the
// moment since no SVG elements overload BeforeSetAttr. For now we just pass
// the current value.
const nsAttrValue* value = attrValue ? attrValue : &emptyOrOldAttrValue;
BeforeSetAttr(kNameSpaceID_None, aName, value, kNotifyDocumentObservers);
return emptyOrOldAttrValue;
}
/**
* Helper methods for the type-specific DidChangeXXX methods.
*
* aEmptyOrOldValue will normally be the object returned from the corresponding
* WillChangeXXX call. This is because:
* a) WillChangeXXX will ensure the object is set when we have mutation
* listeners, and
* b) WillChangeXXX will ensure the object represents a serialized version of
* the old attribute value so that the value doesn't change when the
* underlying SVG type is updated.
*
* aNewValue is replaced with the old value.
*/
void SVGElement::DidChangeValue(nsAtom* aName,
const nsAttrValue& aEmptyOrOldValue,
nsAttrValue& aNewValue,
const mozAutoDocUpdate& aProofOfUpdate) {
bool hasListeners = nsContentUtils::HasMutationListeners(
this, NS_EVENT_BITS_MUTATION_ATTRMODIFIED, this);
uint8_t modType =
HasAttr(aName) ? static_cast<uint8_t>(MutationEvent_Binding::MODIFICATION)
: static_cast<uint8_t>(MutationEvent_Binding::ADDITION);
// XXX Really, the fourth argument to SetAttrAndNotify should be null if
// aEmptyOrOldValue does not represent the actual previous value of the
// attribute, but currently SVG elements do not even use the old attribute
// value in |AfterSetAttr|, so this should be ok.
SetAttrAndNotify(kNameSpaceID_None, aName, nullptr, &aEmptyOrOldValue,
aNewValue, nullptr, modType, hasListeners,
kNotifyDocumentObservers, kCallAfterSetAttr,
GetComposedDoc(), aProofOfUpdate);
}
void SVGElement::MaybeSerializeAttrBeforeRemoval(nsAtom* aName, bool aNotify) {
if (!aNotify || !nsContentUtils::HasMutationListeners(
this, NS_EVENT_BITS_MUTATION_ATTRMODIFIED, this)) {
return;
}
const nsAttrValue* attrValue = mAttrs.GetAttr(aName);
if (!attrValue) return;
nsAutoString serializedValue;
attrValue->ToString(serializedValue);
nsAttrValue oldAttrValue(serializedValue);
bool oldValueSet;
mAttrs.SetAndSwapAttr(aName, oldAttrValue, &oldValueSet);
}
nsAtom* SVGElement::GetEventNameForAttr(nsAtom* aAttr) {
if (IsSVGElement(nsGkAtoms::svg)) {
if (aAttr == nsGkAtoms::onload) return nsGkAtoms::onSVGLoad;
if (aAttr == nsGkAtoms::onscroll) return nsGkAtoms::onSVGScroll;
}
if (aAttr == nsGkAtoms::onbegin) return nsGkAtoms::onbeginEvent;
if (aAttr == nsGkAtoms::onrepeat) return nsGkAtoms::onrepeatEvent;
if (aAttr == nsGkAtoms::onend) return nsGkAtoms::onendEvent;
return SVGElementBase::GetEventNameForAttr(aAttr);
}
SVGViewportElement* SVGElement::GetCtx() const {
return SVGContentUtils::GetNearestViewportElement(this);
}
/* virtual */
gfxMatrix SVGElement::PrependLocalTransformsTo(const gfxMatrix& aMatrix,
SVGTransformTypes aWhich) const {
return aMatrix;
}
SVGElement::LengthAttributesInfo SVGElement::GetLengthInfo() {
return LengthAttributesInfo(nullptr, nullptr, 0);
}
void SVGElement::SetLength(nsAtom* aName, const SVGAnimatedLength& aLength) {
LengthAttributesInfo lengthInfo = GetLengthInfo();
for (uint32_t i = 0; i < lengthInfo.mCount; i++) {
if (aName == lengthInfo.mInfos[i].mName) {
lengthInfo.mValues[i] = aLength;
DidAnimateLength(i);
return;
}
}
MOZ_ASSERT(false, "no length found to set");
}
nsAttrValue SVGElement::WillChangeLength(
uint8_t aAttrEnum, const mozAutoDocUpdate& aProofOfUpdate) {
return WillChangeValue(GetLengthInfo().mInfos[aAttrEnum].mName,
aProofOfUpdate);
}
void SVGElement::DidChangeLength(uint8_t aAttrEnum,
const nsAttrValue& aEmptyOrOldValue,
const mozAutoDocUpdate& aProofOfUpdate) {
LengthAttributesInfo info = GetLengthInfo();
NS_ASSERTION(info.mCount > 0,
"DidChangeLength on element with no length attribs");
NS_ASSERTION(aAttrEnum < info.mCount, "aAttrEnum out of range");
nsAttrValue newValue;
newValue.SetTo(info.mValues[aAttrEnum], nullptr);
DidChangeValue(info.mInfos[aAttrEnum].mName, aEmptyOrOldValue, newValue,
aProofOfUpdate);
}
void SVGElement::DidAnimateLength(uint8_t aAttrEnum) {
// We need to do this here. Normally the SMIL restyle would also cause us to
// do this from DidSetComputedStyle, but we don't have that guarantee if our
// frame gets reconstructed.
ClearAnyCachedPath();
if (SVGGeometryProperty::ElementMapsLengthsToStyle(this)) {
nsCSSPropertyID propId =
SVGGeometryProperty::AttrEnumToCSSPropId(this, aAttrEnum);
// We don't map use element width/height currently. We can remove this
// test when we do.
if (propId != eCSSProperty_UNKNOWN) {
auto lengthInfo = GetLengthInfo();
if (lengthInfo.mValues[aAttrEnum].IsAnimated()) {
SMILOverrideStyle()->SetSMILValue(propId,
lengthInfo.mValues[aAttrEnum]);
} else {
SMILOverrideStyle()->ClearSMILValue(propId);
}
}
}
auto info = GetLengthInfo();
DidAnimateAttribute(kNameSpaceID_None, info.mInfos[aAttrEnum].mName);
}
SVGAnimatedLength* SVGElement::GetAnimatedLength(uint8_t aAttrEnum) {
LengthAttributesInfo info = GetLengthInfo();
if (aAttrEnum < info.mCount) {
return &info.mValues[aAttrEnum];
}
MOZ_ASSERT_UNREACHABLE("Bad attrEnum");
return nullptr;
}
SVGAnimatedLength* SVGElement::GetAnimatedLength(const nsAtom* aAttrName) {
LengthAttributesInfo lengthInfo = GetLengthInfo();
for (uint32_t i = 0; i < lengthInfo.mCount; i++) {
if (aAttrName == lengthInfo.mInfos[i].mName) {
return &lengthInfo.mValues[i];
}
}
return nullptr;
}
void SVGElement::GetAnimatedLengthValues(float* aFirst, ...) {
LengthAttributesInfo info = GetLengthInfo();
NS_ASSERTION(info.mCount > 0,
"GetAnimatedLengthValues on element with no length attribs");
SVGElementMetrics metrics(this);
float* f = aFirst;
uint32_t i = 0;
va_list args;
va_start(args, aFirst);
while (f && i < info.mCount) {
*f = info.mValues[i++].GetAnimValue(metrics);
f = va_arg(args, float*);
}
va_end(args);
}
SVGElement::LengthListAttributesInfo SVGElement::GetLengthListInfo() {
return LengthListAttributesInfo(nullptr, nullptr, 0);
}
nsAttrValue SVGElement::WillChangeLengthList(
uint8_t aAttrEnum, const mozAutoDocUpdate& aProofOfUpdate) {
return WillChangeValue(GetLengthListInfo().mInfos[aAttrEnum].mName,
aProofOfUpdate);
}
void SVGElement::DidChangeLengthList(uint8_t aAttrEnum,
const nsAttrValue& aEmptyOrOldValue,
const mozAutoDocUpdate& aProofOfUpdate) {
LengthListAttributesInfo info = GetLengthListInfo();
NS_ASSERTION(info.mCount > 0,
"DidChangeLengthList on element with no length list attribs");
NS_ASSERTION(aAttrEnum < info.mCount, "aAttrEnum out of range");
nsAttrValue newValue;
newValue.SetTo(info.mValues[aAttrEnum].GetBaseValue(), nullptr);
DidChangeValue(info.mInfos[aAttrEnum].mName, aEmptyOrOldValue, newValue,
aProofOfUpdate);
}
void SVGElement::GetAnimatedLengthListValues(SVGUserUnitList* aFirst, ...) {
LengthListAttributesInfo info = GetLengthListInfo();
NS_ASSERTION(
info.mCount > 0,
"GetAnimatedLengthListValues on element with no length list attribs");
SVGUserUnitList* list = aFirst;
uint32_t i = 0;
va_list args;
va_start(args, aFirst);
while (list && i < info.mCount) {
list->Init(&(info.mValues[i].GetAnimValue()), this, info.mInfos[i].mAxis);
++i;
list = va_arg(args, SVGUserUnitList*);
}
va_end(args);
}
SVGAnimatedLengthList* SVGElement::GetAnimatedLengthList(uint8_t aAttrEnum) {
LengthListAttributesInfo info = GetLengthListInfo();
if (aAttrEnum < info.mCount) {
return &(info.mValues[aAttrEnum]);
}
MOZ_ASSERT_UNREACHABLE("Bad attrEnum");
return nullptr;
}
SVGElement::NumberListAttributesInfo SVGElement::GetNumberListInfo() {
return NumberListAttributesInfo(nullptr, nullptr, 0);
}
nsAttrValue SVGElement::WillChangeNumberList(
uint8_t aAttrEnum, const mozAutoDocUpdate& aProofOfUpdate) {
return WillChangeValue(GetNumberListInfo().mInfos[aAttrEnum].mName,
aProofOfUpdate);
}
void SVGElement::DidChangeNumberList(uint8_t aAttrEnum,
const nsAttrValue& aEmptyOrOldValue,
const mozAutoDocUpdate& aProofOfUpdate) {
NumberListAttributesInfo info = GetNumberListInfo();
MOZ_ASSERT(info.mCount > 0,
"DidChangeNumberList on element with no number list attribs");
MOZ_ASSERT(aAttrEnum < info.mCount, "aAttrEnum out of range");
nsAttrValue newValue;
newValue.SetTo(info.mValues[aAttrEnum].GetBaseValue(), nullptr);
DidChangeValue(info.mInfos[aAttrEnum].mName, aEmptyOrOldValue, newValue,
aProofOfUpdate);
}
SVGAnimatedNumberList* SVGElement::GetAnimatedNumberList(uint8_t aAttrEnum) {
NumberListAttributesInfo info = GetNumberListInfo();
if (aAttrEnum < info.mCount) {
return &(info.mValues[aAttrEnum]);
}
MOZ_ASSERT(false, "Bad attrEnum");
return nullptr;
}
SVGAnimatedNumberList* SVGElement::GetAnimatedNumberList(nsAtom* aAttrName) {
NumberListAttributesInfo info = GetNumberListInfo();
for (uint32_t i = 0; i < info.mCount; i++) {
if (aAttrName == info.mInfos[i].mName) {
return &info.mValues[i];
}
}
MOZ_ASSERT(false, "Bad caller");
return nullptr;
}
nsAttrValue SVGElement::WillChangePointList(
const mozAutoDocUpdate& aProofOfUpdate) {
MOZ_ASSERT(GetPointListAttrName(), "Changing non-existent point list?");
return WillChangeValue(GetPointListAttrName(), aProofOfUpdate);
}
void SVGElement::DidChangePointList(const nsAttrValue& aEmptyOrOldValue,
const mozAutoDocUpdate& aProofOfUpdate) {
MOZ_ASSERT(GetPointListAttrName(), "Changing non-existent point list?");
nsAttrValue newValue;
newValue.SetTo(GetAnimatedPointList()->GetBaseValue(), nullptr);
DidChangeValue(GetPointListAttrName(), aEmptyOrOldValue, newValue,
aProofOfUpdate);
}
void SVGElement::DidAnimatePointList() {
MOZ_ASSERT(GetPointListAttrName(), "Animating non-existent path data?");
ClearAnyCachedPath();
DidAnimateAttribute(kNameSpaceID_None, GetPointListAttrName());
}
nsAttrValue SVGElement::WillChangePathSegList(
const mozAutoDocUpdate& aProofOfUpdate) {
MOZ_ASSERT(GetPathDataAttrName(), "Changing non-existent path seg list?");
return WillChangeValue(GetPathDataAttrName(), aProofOfUpdate);
}
void SVGElement::DidChangePathSegList(const nsAttrValue& aEmptyOrOldValue,
const mozAutoDocUpdate& aProofOfUpdate) {
MOZ_ASSERT(GetPathDataAttrName(), "Changing non-existent path seg list?");
nsAttrValue newValue;
newValue.SetTo(GetAnimPathSegList()->GetBaseValue(), nullptr);
DidChangeValue(GetPathDataAttrName(), aEmptyOrOldValue, newValue,
aProofOfUpdate);
}
void SVGElement::DidAnimatePathSegList() {
nsStaticAtom* name = GetPathDataAttrName();
MOZ_ASSERT(name, "Animating non-existent path data?");
ClearAnyCachedPath();
// Notify style we have to update the d property because of SMIL animation.
if (name == nsGkAtoms::d) {
auto* animPathSegList = GetAnimPathSegList();
if (animPathSegList->IsAnimating()) {
SMILOverrideStyle()->SetSMILValue(nsCSSPropertyID::eCSSProperty_d,
*animPathSegList);
} else {
SMILOverrideStyle()->ClearSMILValue(nsCSSPropertyID::eCSSProperty_d);
}
}
DidAnimateAttribute(kNameSpaceID_None, name);
}
SVGElement::NumberAttributesInfo SVGElement::GetNumberInfo() {
return NumberAttributesInfo(nullptr, nullptr, 0);
}
void SVGElement::DidChangeNumber(uint8_t aAttrEnum) {
NumberAttributesInfo info = GetNumberInfo();
NS_ASSERTION(info.mCount > 0,
"DidChangeNumber on element with no number attribs");
NS_ASSERTION(aAttrEnum < info.mCount, "aAttrEnum out of range");
nsAttrValue attrValue;
attrValue.SetTo(info.mValues[aAttrEnum].GetBaseValue(), nullptr);
SetParsedAttr(kNameSpaceID_None, info.mInfos[aAttrEnum].mName, nullptr,
attrValue, true);
}
void SVGElement::GetAnimatedNumberValues(float* aFirst, ...) {
NumberAttributesInfo info = GetNumberInfo();
NS_ASSERTION(info.mCount > 0,
"GetAnimatedNumberValues on element with no number attribs");
float* f = aFirst;
uint32_t i = 0;
va_list args;
va_start(args, aFirst);
while (f && i < info.mCount) {
*f = info.mValues[i++].GetAnimValue();
f = va_arg(args, float*);
}
va_end(args);
}
SVGElement::NumberPairAttributesInfo SVGElement::GetNumberPairInfo() {
return NumberPairAttributesInfo(nullptr, nullptr, 0);
}
nsAttrValue SVGElement::WillChangeNumberPair(uint8_t aAttrEnum) {
mozAutoDocUpdate updateBatch(GetComposedDoc(), kDontNotifyDocumentObservers);
return WillChangeValue(GetNumberPairInfo().mInfos[aAttrEnum].mName,
updateBatch);
}
void SVGElement::DidChangeNumberPair(uint8_t aAttrEnum,
const nsAttrValue& aEmptyOrOldValue) {
NumberPairAttributesInfo info = GetNumberPairInfo();
NS_ASSERTION(info.mCount > 0,
"DidChangePairNumber on element with no number pair attribs");
NS_ASSERTION(aAttrEnum < info.mCount, "aAttrEnum out of range");
nsAttrValue newValue;
newValue.SetTo(info.mValues[aAttrEnum], nullptr);
mozAutoDocUpdate updateBatch(GetComposedDoc(), kNotifyDocumentObservers);
DidChangeValue(info.mInfos[aAttrEnum].mName, aEmptyOrOldValue, newValue,
updateBatch);
}
SVGElement::IntegerAttributesInfo SVGElement::GetIntegerInfo() {
return IntegerAttributesInfo(nullptr, nullptr, 0);
}
void SVGElement::DidChangeInteger(uint8_t aAttrEnum) {
IntegerAttributesInfo info = GetIntegerInfo();
NS_ASSERTION(info.mCount > 0,
"DidChangeInteger on element with no integer attribs");
NS_ASSERTION(aAttrEnum < info.mCount, "aAttrEnum out of range");
nsAttrValue attrValue;
attrValue.SetTo(info.mValues[aAttrEnum].GetBaseValue(), nullptr);
SetParsedAttr(kNameSpaceID_None, info.mInfos[aAttrEnum].mName, nullptr,
attrValue, true);
}
void SVGElement::GetAnimatedIntegerValues(int32_t* aFirst, ...) {
IntegerAttributesInfo info = GetIntegerInfo();
NS_ASSERTION(info.mCount > 0,
"GetAnimatedIntegerValues on element with no integer attribs");
int32_t* n = aFirst;
uint32_t i = 0;
va_list args;
va_start(args, aFirst);
while (n && i < info.mCount) {
*n = info.mValues[i++].GetAnimValue();
n = va_arg(args, int32_t*);
}
va_end(args);
}
SVGElement::IntegerPairAttributesInfo SVGElement::GetIntegerPairInfo() {
return IntegerPairAttributesInfo(nullptr, nullptr, 0);
}
nsAttrValue SVGElement::WillChangeIntegerPair(
uint8_t aAttrEnum, const mozAutoDocUpdate& aProofOfUpdate) {
return WillChangeValue(GetIntegerPairInfo().mInfos[aAttrEnum].mName,
aProofOfUpdate);
}
void SVGElement::DidChangeIntegerPair(uint8_t aAttrEnum,
const nsAttrValue& aEmptyOrOldValue,
const mozAutoDocUpdate& aProofOfUpdate) {
IntegerPairAttributesInfo info = GetIntegerPairInfo();
NS_ASSERTION(info.mCount > 0,
"DidChangeIntegerPair on element with no integer pair attribs");
NS_ASSERTION(aAttrEnum < info.mCount, "aAttrEnum out of range");
nsAttrValue newValue;
newValue.SetTo(info.mValues[aAttrEnum], nullptr);
DidChangeValue(info.mInfos[aAttrEnum].mName, aEmptyOrOldValue, newValue,
aProofOfUpdate);
}
SVGElement::BooleanAttributesInfo SVGElement::GetBooleanInfo() {
return BooleanAttributesInfo(nullptr, nullptr, 0);
}
void SVGElement::DidChangeBoolean(uint8_t aAttrEnum) {
BooleanAttributesInfo info = GetBooleanInfo();
NS_ASSERTION(info.mCount > 0,
"DidChangeBoolean on element with no boolean attribs");
NS_ASSERTION(aAttrEnum < info.mCount, "aAttrEnum out of range");
nsAttrValue attrValue(info.mValues[aAttrEnum].GetBaseValueAtom());
SetParsedAttr(kNameSpaceID_None, info.mInfos[aAttrEnum].mName, nullptr,
attrValue, true);
}
SVGElement::EnumAttributesInfo SVGElement::GetEnumInfo() {
return EnumAttributesInfo(nullptr, nullptr, 0);
}
void SVGElement::DidChangeEnum(uint8_t aAttrEnum) {
EnumAttributesInfo info = GetEnumInfo();
NS_ASSERTION(info.mCount > 0,
"DidChangeEnum on element with no enum attribs");
NS_ASSERTION(aAttrEnum < info.mCount, "aAttrEnum out of range");
nsAttrValue attrValue(info.mValues[aAttrEnum].GetBaseValueAtom(this));
SetParsedAttr(kNameSpaceID_None, info.mInfos[aAttrEnum].mName, nullptr,
attrValue, true);
}
SVGAnimatedOrient* SVGElement::GetAnimatedOrient() { return nullptr; }
nsAttrValue SVGElement::WillChangeOrient(
const mozAutoDocUpdate& aProofOfUpdate) {
return WillChangeValue(nsGkAtoms::orient, aProofOfUpdate);
}
void SVGElement::DidChangeOrient(const nsAttrValue& aEmptyOrOldValue,
const mozAutoDocUpdate& aProofOfUpdate) {
SVGAnimatedOrient* orient = GetAnimatedOrient();
NS_ASSERTION(orient, "DidChangeOrient on element with no orient attrib");
nsAttrValue newValue;
newValue.SetTo(*orient, nullptr);
DidChangeValue(nsGkAtoms::orient, aEmptyOrOldValue, newValue, aProofOfUpdate);
}
SVGAnimatedViewBox* SVGElement::GetAnimatedViewBox() { return nullptr; }
nsAttrValue SVGElement::WillChangeViewBox(
const mozAutoDocUpdate& aProofOfUpdate) {
return WillChangeValue(nsGkAtoms::viewBox, aProofOfUpdate);
}
void SVGElement::DidChangeViewBox(const nsAttrValue& aEmptyOrOldValue,
const mozAutoDocUpdate& aProofOfUpdate) {
SVGAnimatedViewBox* viewBox = GetAnimatedViewBox();
NS_ASSERTION(viewBox, "DidChangeViewBox on element with no viewBox attrib");
nsAttrValue newValue;
newValue.SetTo(*viewBox, nullptr);
DidChangeValue(nsGkAtoms::viewBox, aEmptyOrOldValue, newValue,
aProofOfUpdate);
}
SVGAnimatedPreserveAspectRatio* SVGElement::GetAnimatedPreserveAspectRatio() {
return nullptr;
}
nsAttrValue SVGElement::WillChangePreserveAspectRatio(
const mozAutoDocUpdate& aProofOfUpdate) {
return WillChangeValue(nsGkAtoms::preserveAspectRatio, aProofOfUpdate);
}
void SVGElement::DidChangePreserveAspectRatio(
const nsAttrValue& aEmptyOrOldValue,
const mozAutoDocUpdate& aProofOfUpdate) {
SVGAnimatedPreserveAspectRatio* preserveAspectRatio =
GetAnimatedPreserveAspectRatio();
NS_ASSERTION(preserveAspectRatio,
"DidChangePreserveAspectRatio on element with no "
"preserveAspectRatio attrib");
nsAttrValue newValue;
newValue.SetTo(*preserveAspectRatio, nullptr);
DidChangeValue(nsGkAtoms::preserveAspectRatio, aEmptyOrOldValue, newValue,
aProofOfUpdate);
}
nsAttrValue SVGElement::WillChangeTransformList(
const mozAutoDocUpdate& aProofOfUpdate) {
return WillChangeValue(GetTransformListAttrName(), aProofOfUpdate);
}
void SVGElement::DidChangeTransformList(
const nsAttrValue& aEmptyOrOldValue,
const mozAutoDocUpdate& aProofOfUpdate) {
MOZ_ASSERT(GetTransformListAttrName(),
"Changing non-existent transform list?");
// The transform attribute is being set, so we must ensure that the
// SVGAnimatedTransformList is/has been allocated:
nsAttrValue newValue;
newValue.SetTo(GetAnimatedTransformList(DO_ALLOCATE)->GetBaseValue(),
nullptr);
DidChangeValue(GetTransformListAttrName(), aEmptyOrOldValue, newValue,
aProofOfUpdate);
}
void SVGElement::DidAnimateTransformList(int32_t aModType) {
MOZ_ASSERT(GetTransformListAttrName(),
"Animating non-existent transform data?");
if (auto* frame = GetPrimaryFrame()) {
nsAtom* transformAttr = GetTransformListAttrName();
frame->AttributeChanged(kNameSpaceID_None, transformAttr, aModType);
// When script changes the 'transform' attribute, Element::SetAttrAndNotify
// will call MutationObservers::NotifyAttributeChanged, under which
// SVGTransformableElement::GetAttributeChangeHint will be called and an
// appropriate change event posted to update our frame's overflow rects.
// The SetAttrAndNotify doesn't happen for transform changes caused by
// 'animateTransform' though (and sending out the mutation events that
// MutationObservers::NotifyAttributeChanged dispatches would be
// inappropriate anyway), so we need to post the change event ourself.
nsChangeHint changeHint = GetAttributeChangeHint(transformAttr, aModType);
if (changeHint) {
nsLayoutUtils::PostRestyleEvent(this, RestyleHint{0}, changeHint);
}
SVGObserverUtils::InvalidateRenderingObservers(frame);
return;
}
SVGObserverUtils::InvalidateDirectRenderingObservers(this);
}
SVGElement::StringAttributesInfo SVGElement::GetStringInfo() {
return StringAttributesInfo(nullptr, nullptr, 0);
}
void SVGElement::GetStringBaseValue(uint8_t aAttrEnum,
nsAString& aResult) const {
SVGElement::StringAttributesInfo info =
const_cast<SVGElement*>(this)->GetStringInfo();
NS_ASSERTION(info.mCount > 0,
"GetBaseValue on element with no string attribs");
NS_ASSERTION(aAttrEnum < info.mCount, "aAttrEnum out of range");
GetAttr(info.mInfos[aAttrEnum].mNamespaceID, info.mInfos[aAttrEnum].mName,
aResult);
}
void SVGElement::SetStringBaseValue(uint8_t aAttrEnum,
const nsAString& aValue) {
SVGElement::StringAttributesInfo info = GetStringInfo();
NS_ASSERTION(info.mCount > 0,
"SetBaseValue on element with no string attribs");
NS_ASSERTION(aAttrEnum < info.mCount, "aAttrEnum out of range");
SetAttr(info.mInfos[aAttrEnum].mNamespaceID, info.mInfos[aAttrEnum].mName,
aValue, true);
}
SVGElement::StringListAttributesInfo SVGElement::GetStringListInfo() {
return StringListAttributesInfo(nullptr, nullptr, 0);
}
nsAttrValue SVGElement::WillChangeStringList(
bool aIsConditionalProcessingAttribute, uint8_t aAttrEnum,
const mozAutoDocUpdate& aProofOfUpdate) {
nsStaticAtom* name;
if (aIsConditionalProcessingAttribute) {
nsCOMPtr<SVGTests> tests(do_QueryInterface(this));
name = tests->GetAttrName(aAttrEnum);
} else {
name = GetStringListInfo().mInfos[aAttrEnum].mName;
}
return WillChangeValue(name, aProofOfUpdate);
}
void SVGElement::DidChangeStringList(bool aIsConditionalProcessingAttribute,
uint8_t aAttrEnum,
const nsAttrValue& aEmptyOrOldValue,
const mozAutoDocUpdate& aProofOfUpdate) {
nsStaticAtom* name;
nsAttrValue newValue;
nsCOMPtr<SVGTests> tests;
if (aIsConditionalProcessingAttribute) {
tests = do_QueryObject(this);
name = tests->GetAttrName(aAttrEnum);
tests->GetAttrValue(aAttrEnum, newValue);
} else {
StringListAttributesInfo info = GetStringListInfo();
NS_ASSERTION(info.mCount > 0,
"DidChangeStringList on element with no string list attribs");
NS_ASSERTION(aAttrEnum < info.mCount, "aAttrEnum out of range");
name = info.mInfos[aAttrEnum].mName;
newValue.SetTo(info.mValues[aAttrEnum], nullptr);
}
DidChangeValue(name, aEmptyOrOldValue, newValue, aProofOfUpdate);
if (aIsConditionalProcessingAttribute) {
tests->MaybeInvalidate();
}
}
void SVGElement::DidAnimateAttribute(int32_t aNameSpaceID, nsAtom* aAttribute) {
if (auto* frame = GetPrimaryFrame()) {
frame->AttributeChanged(aNameSpaceID, aAttribute,
MutationEvent_Binding::SMIL);
SVGObserverUtils::InvalidateRenderingObservers(frame);
return;
}
SVGObserverUtils::InvalidateDirectRenderingObservers(this);
}
nsresult SVGElement::ReportAttributeParseFailure(Document* aDocument,
nsAtom* aAttribute,
const nsAString& aValue) {
AutoTArray<nsString, 2> strings;
strings.AppendElement(nsDependentAtomString(aAttribute));
strings.AppendElement(aValue);
return SVGContentUtils::ReportToConsole(aDocument, "AttributeParseWarning",
strings);
}
UniquePtr<SMILAttr> SVGElement::GetAnimatedAttr(int32_t aNamespaceID,
nsAtom* aName) {
if (aNamespaceID == kNameSpaceID_None) {
// Transforms:
if (GetTransformListAttrName() == aName) {
// The transform attribute is being animated, so we must ensure that the
// SVGAnimatedTransformList is/has been allocated:
return GetAnimatedTransformList(DO_ALLOCATE)->ToSMILAttr(this);
}
// Motion (fake 'attribute' for animateMotion)
if (aName == nsGkAtoms::mozAnimateMotionDummyAttr) {
return MakeUnique<SVGMotionSMILAttr>(this);
}
// Lengths:
LengthAttributesInfo info = GetLengthInfo();
for (uint32_t i = 0; i < info.mCount; i++) {
if (aName == info.mInfos[i].mName) {
return info.mValues[i].ToSMILAttr(this);
}
}
// Numbers:
{
NumberAttributesInfo info = GetNumberInfo();
for (uint32_t i = 0; i < info.mCount; i++) {
if (aName == info.mInfos[i].mName) {
return info.mValues[i].ToSMILAttr(this);
}
}
}
// Number Pairs:
{
NumberPairAttributesInfo info = GetNumberPairInfo();
for (uint32_t i = 0; i < info.mCount; i++) {
if (aName == info.mInfos[i].mName) {
return info.mValues[i].ToSMILAttr(this);
}
}
}
// Integers:
{
IntegerAttributesInfo info = GetIntegerInfo();
for (uint32_t i = 0; i < info.mCount; i++) {
if (aName == info.mInfos[i].mName) {
return info.mValues[i].ToSMILAttr(this);
}
}
}
// Integer Pairs:
{
IntegerPairAttributesInfo info = GetIntegerPairInfo();
for (uint32_t i = 0; i < info.mCount; i++) {
if (aName == info.mInfos[i].mName) {
return info.mValues[i].ToSMILAttr(this);
}
}
}
// Enumerations:
{
EnumAttributesInfo info = GetEnumInfo();
for (uint32_t i = 0; i < info.mCount; i++) {
if (aName == info.mInfos[i].mName) {
return info.mValues[i].ToSMILAttr(this);
}
}
}
// Booleans:
{
BooleanAttributesInfo info = GetBooleanInfo();
for (uint32_t i = 0; i < info.mCount; i++) {
if (aName == info.mInfos[i].mName) {
return info.mValues[i].ToSMILAttr(this);
}
}
}
// orient:
if (aName == nsGkAtoms::orient) {
SVGAnimatedOrient* orient = GetAnimatedOrient();
return orient ? orient->ToSMILAttr(this) : nullptr;
}
// viewBox:
if (aName == nsGkAtoms::viewBox) {
SVGAnimatedViewBox* viewBox = GetAnimatedViewBox();
return viewBox ? viewBox->ToSMILAttr(this) : nullptr;
}
// preserveAspectRatio:
if (aName == nsGkAtoms::preserveAspectRatio) {
SVGAnimatedPreserveAspectRatio* preserveAspectRatio =
GetAnimatedPreserveAspectRatio();
return preserveAspectRatio ? preserveAspectRatio->ToSMILAttr(this)
: nullptr;
}
// NumberLists:
{
NumberListAttributesInfo info = GetNumberListInfo();
for (uint32_t i = 0; i < info.mCount; i++) {
if (aName == info.mInfos[i].mName) {
MOZ_ASSERT(i <= UCHAR_MAX, "Too many attributes");
return info.mValues[i].ToSMILAttr(this, uint8_t(i));
}
}
}
// LengthLists:
{
LengthListAttributesInfo info = GetLengthListInfo();
for (uint32_t i = 0; i < info.mCount; i++) {
if (aName == info.mInfos[i].mName) {
MOZ_ASSERT(i <= UCHAR_MAX, "Too many attributes");
return info.mValues[i].ToSMILAttr(this, uint8_t(i),
info.mInfos[i].mAxis,
info.mInfos[i].mCouldZeroPadList);
}
}
}
// PointLists:
{
if (GetPointListAttrName() == aName) {
SVGAnimatedPointList* pointList = GetAnimatedPointList();
if (pointList) {
return pointList->ToSMILAttr(this);
}
}
}
// PathSegLists:
{
if (GetPathDataAttrName() == aName) {
SVGAnimatedPathSegList* segList = GetAnimPathSegList();
if (segList) {
return segList->ToSMILAttr(this);
}
}
}
if (aName == nsGkAtoms::_class) {
return mClassAttribute.ToSMILAttr(this);
}
}
// Strings
{
StringAttributesInfo info = GetStringInfo();
for (uint32_t i = 0; i < info.mCount; i++) {
if (aNamespaceID == info.mInfos[i].mNamespaceID &&
aName == info.mInfos[i].mName) {
return info.mValues[i].ToSMILAttr(this);
}
}
}
return nullptr;
}
void SVGElement::AnimationNeedsResample() {
Document* doc = GetComposedDoc();
if (doc && doc->HasAnimationController()) {
doc->GetAnimationController()->SetResampleNeeded();
}
}
void SVGElement::FlushAnimations() {
Document* doc = GetComposedDoc();
if (doc && doc->HasAnimationController()) {
doc->GetAnimationController()->FlushResampleRequests();
}
}
void SVGElement::AddSizeOfExcludingThis(nsWindowSizes& aSizes,
size_t* aNodeSize) const {
Element::AddSizeOfExcludingThis(aSizes, aNodeSize);
}
} // namespace mozilla::dom
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