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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
#include "mozilla/dom/SVGAnimationElement.h"
#include "mozilla/dom/SVGSVGElement.h"
#include "mozilla/dom/SVGSwitchElement.h"
#include "mozilla/dom/BindContext.h"
#include "mozilla/dom/ElementInlines.h"
#include "mozilla/SMILAnimationController.h"
#include "mozilla/SMILAnimationFunction.h"
#include "mozilla/SMILTimeContainer.h"
#include "nsContentUtils.h"
#include "nsIContentInlines.h"
namespace mozilla::dom {
//----------------------------------------------------------------------
// nsISupports methods
NS_IMPL_ADDREF_INHERITED(SVGAnimationElement, SVGAnimationElementBase)
NS_IMPL_RELEASE_INHERITED(SVGAnimationElement, SVGAnimationElementBase)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(SVGAnimationElement)
NS_INTERFACE_MAP_ENTRY(mozilla::dom::SVGTests)
NS_INTERFACE_MAP_END_INHERITING(SVGAnimationElementBase)
NS_IMPL_CYCLE_COLLECTION_INHERITED(SVGAnimationElement, SVGAnimationElementBase,
mHrefTarget, mTimedElement)
//----------------------------------------------------------------------
// Implementation
SVGAnimationElement::SVGAnimationElement(
already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
: SVGAnimationElementBase(std::move(aNodeInfo)), mHrefTarget(this) {}
nsresult SVGAnimationElement::Init() {
nsresult rv = SVGAnimationElementBase::Init();
NS_ENSURE_SUCCESS(rv, rv);
mTimedElement.SetAnimationElement(this);
AnimationFunction().SetAnimationElement(this);
mTimedElement.SetTimeClient(&AnimationFunction());
return NS_OK;
}
//----------------------------------------------------------------------
Element* SVGAnimationElement::GetTargetElementContent() {
if (HasAttr(kNameSpaceID_XLink, nsGkAtoms::href) ||
HasAttr(nsGkAtoms::href)) {
return mHrefTarget.get();
}
MOZ_ASSERT(!mHrefTarget.get(),
"We shouldn't have a href target "
"if we don't have an xlink:href or href attribute");
// No "href" or "xlink:href" attribute --> I should target my parent.
//
// Note that we want to use GetParentElement instead of the flattened tree to
// allow <use><animate>, for example.
return GetParentElement();
}
bool SVGAnimationElement::GetTargetAttributeName(int32_t* aNamespaceID,
nsAtom** aLocalName) const {
const nsAttrValue* nameAttr = mAttrs.GetAttr(nsGkAtoms::attributeName);
if (!nameAttr) return false;
NS_ASSERTION(nameAttr->Type() == nsAttrValue::eAtom,
"attributeName should have been parsed as an atom");
return NS_SUCCEEDED(nsContentUtils::SplitQName(
this, nsDependentAtomString(nameAttr->GetAtomValue()), aNamespaceID,
aLocalName));
}
SMILTimedElement& SVGAnimationElement::TimedElement() { return mTimedElement; }
SVGElement* SVGAnimationElement::GetTargetElement() {
FlushAnimations();
// We'll just call the other GetTargetElement method, and QI to the right type
return SVGElement::FromNodeOrNull(GetTargetElementContent());
}
float SVGAnimationElement::GetStartTime(ErrorResult& rv) {
FlushAnimations();
SMILTimeValue startTime = mTimedElement.GetStartTime();
if (!startTime.IsDefinite()) {
rv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
return 0.f;
}
return float(double(startTime.GetMillis()) / PR_MSEC_PER_SEC);
}
float SVGAnimationElement::GetCurrentTimeAsFloat() {
// Not necessary to call FlushAnimations() for this
SMILTimeContainer* root = GetTimeContainer();
if (root) {
return float(double(root->GetCurrentTimeAsSMILTime()) / PR_MSEC_PER_SEC);
}
return 0.0f;
}
float SVGAnimationElement::GetSimpleDuration(ErrorResult& rv) {
// Not necessary to call FlushAnimations() for this
SMILTimeValue simpleDur = mTimedElement.GetSimpleDuration();
if (!simpleDur.IsDefinite()) {
rv.Throw(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
return 0.f;
}
return float(double(simpleDur.GetMillis()) / PR_MSEC_PER_SEC);
}
//----------------------------------------------------------------------
// nsIContent methods
nsresult SVGAnimationElement::BindToTree(BindContext& aContext,
nsINode& aParent) {
MOZ_ASSERT(!mHrefTarget.get(),
"Shouldn't have href-target yet (or it should've been cleared)");
nsresult rv = SVGAnimationElementBase::BindToTree(aContext, aParent);
NS_ENSURE_SUCCESS(rv, rv);
// Add myself to the animation controller's master set of animation elements.
if (Document* doc = aContext.GetComposedDoc()) {
if (SMILAnimationController* controller = doc->GetAnimationController()) {
controller->RegisterAnimationElement(this);
}
const nsAttrValue* href =
HasAttr(nsGkAtoms::href)
? mAttrs.GetAttr(nsGkAtoms::href, kNameSpaceID_None)
: mAttrs.GetAttr(nsGkAtoms::href, kNameSpaceID_XLink);
if (href) {
nsAutoString hrefStr;
href->ToString(hrefStr);
UpdateHrefTarget(hrefStr);
}
mTimedElement.BindToTree(*this);
}
mTimedElement.SetIsDisabled(IsDisabled());
AnimationNeedsResample();
return NS_OK;
}
void SVGAnimationElement::UnbindFromTree(UnbindContext& aContext) {
SMILAnimationController* controller = OwnerDoc()->GetAnimationController();
if (controller) {
controller->UnregisterAnimationElement(this);
}
mHrefTarget.Unlink();
mTimedElement.DissolveReferences();
AnimationNeedsResample();
SVGAnimationElementBase::UnbindFromTree(aContext);
}
bool SVGAnimationElement::ParseAttribute(int32_t aNamespaceID,
nsAtom* aAttribute,
const nsAString& aValue,
nsIPrincipal* aMaybeScriptedPrincipal,
nsAttrValue& aResult) {
if (aNamespaceID == kNameSpaceID_None) {
// Deal with target-related attributes here
if (aAttribute == nsGkAtoms::attributeName) {
aResult.ParseAtom(aValue);
AnimationNeedsResample();
return true;
}
nsresult rv = NS_ERROR_FAILURE;
// First let the animation function try to parse it...
bool foundMatch =
AnimationFunction().SetAttr(aAttribute, aValue, aResult, &rv);
// ... and if that didn't recognize the attribute, let the timed element
// try to parse it.
if (!foundMatch) {
foundMatch =
mTimedElement.SetAttr(aAttribute, aValue, aResult, *this, &rv);
}
if (foundMatch) {
AnimationNeedsResample();
if (NS_FAILED(rv)) {
ReportAttributeParseFailure(OwnerDoc(), aAttribute, aValue);
return false;
}
return true;
}
}
return SVGAnimationElementBase::ParseAttribute(
aNamespaceID, aAttribute, aValue, aMaybeScriptedPrincipal, aResult);
}
void SVGAnimationElement::AfterSetAttr(int32_t aNamespaceID, nsAtom* aName,
const nsAttrValue* aValue,
const nsAttrValue* aOldValue,
nsIPrincipal* aSubjectPrincipal,
bool aNotify) {
if (!aValue && aNamespaceID == kNameSpaceID_None) {
// Attribute is being removed.
if (AnimationFunction().UnsetAttr(aName) ||
mTimedElement.UnsetAttr(aName)) {
AnimationNeedsResample();
}
}
SVGAnimationElementBase::AfterSetAttr(aNamespaceID, aName, aValue, aOldValue,
aSubjectPrincipal, aNotify);
if (SVGTests::IsConditionalProcessingAttribute(aName)) {
if (mTimedElement.SetIsDisabled(IsDisabled())) {
AnimationNeedsResample();
}
}
if (!IsInComposedDoc()) {
return;
}
if (!((aNamespaceID == kNameSpaceID_None ||
aNamespaceID == kNameSpaceID_XLink) &&
aName == nsGkAtoms::href)) {
return;
}
if (!aValue) {
if (aNamespaceID == kNameSpaceID_None) {
mHrefTarget.Unlink();
AnimationTargetChanged();
// After unsetting href, we may still have xlink:href, so we
// should try to add it back.
const nsAttrValue* xlinkHref =
mAttrs.GetAttr(nsGkAtoms::href, kNameSpaceID_XLink);
if (xlinkHref) {
UpdateHrefTarget(xlinkHref->GetStringValue());
}
} else if (!HasAttr(nsGkAtoms::href)) {
mHrefTarget.Unlink();
AnimationTargetChanged();
} // else: we unset xlink:href, but we still have href attribute, so keep
// mHrefTarget linking to href.
} else if (!(aNamespaceID == kNameSpaceID_XLink &&
HasAttr(nsGkAtoms::href))) {
// Note: "href" takes priority over xlink:href. So if "xlink:href" is being
// set here, we only let that update our target if "href" is *unset*.
MOZ_ASSERT(aValue->Type() == nsAttrValue::eString,
"Expected href attribute to be string type");
UpdateHrefTarget(aValue->GetStringValue());
} // else: we're not yet in a document -- we'll update the target on
// next BindToTree call.
}
bool SVGAnimationElement::IsDisabled() {
if (!SVGTests::PassesConditionalProcessingTests()) {
return true;
}
nsIContent* child = this;
while (nsIContent* parent = child->GetFlattenedTreeParent()) {
if (!parent->IsSVGElement()) {
return false;
}
if (auto* svgSwitch = SVGSwitchElement::FromNodeOrNull(parent)) {
nsIFrame* frame = svgSwitch->GetPrimaryFrame();
// If we've been reflowed then the active child has been determined,
// otherwise we'll have to calculate whether this is the active child.
if (frame && !frame->HasAnyStateBits(NS_FRAME_FIRST_REFLOW)) {
if (child != svgSwitch->GetActiveChild()) {
return true;
}
} else {
if (child != SVGTests::FindActiveSwitchChild(svgSwitch)) {
return true;
}
}
} else if (auto* svgGraphics = SVGGraphicsElement::FromNode(parent)) {
if (!svgGraphics->PassesConditionalProcessingTests()) {
return true;
}
}
child = parent;
}
return false;
}
//----------------------------------------------------------------------
// SVG utility methods
void SVGAnimationElement::ActivateByHyperlink() {
FlushAnimations();
// The behavior for when the target is an animation element is defined in
// SMIL Animation:
SMILTimeValue seekTime = mTimedElement.GetHyperlinkTime();
if (seekTime.IsDefinite()) {
SMILTimeContainer* timeContainer = GetTimeContainer();
if (timeContainer) {
timeContainer->SetCurrentTime(seekTime.GetMillis());
AnimationNeedsResample();
// As with SVGSVGElement::SetCurrentTime, we need to trigger
// a synchronous sample now.
FlushAnimations();
}
// else, silently fail. We mustn't be part of an SVG document fragment that
// is attached to the document tree so there's nothing we can do here
} else {
BeginElement(IgnoreErrors());
}
}
//----------------------------------------------------------------------
// Implementation helpers
SMILTimeContainer* SVGAnimationElement::GetTimeContainer() {
SVGSVGElement* element = SVGContentUtils::GetOuterSVGElement(this);
if (element) {
return element->GetTimedDocumentRoot();
}
return nullptr;
}
void SVGAnimationElement::BeginElementAt(float offset, ErrorResult& rv) {
// Make sure the timegraph is up-to-date
FlushAnimations();
// This will fail if we're not attached to a time container (SVG document
// fragment).
rv = mTimedElement.BeginElementAt(offset);
if (rv.Failed()) return;
AnimationNeedsResample();
// Force synchronous sample so that events resulting from this call arrive in
// the expected order and we get an up-to-date paint.
FlushAnimations();
}
void SVGAnimationElement::EndElementAt(float offset, ErrorResult& rv) {
// Make sure the timegraph is up-to-date
FlushAnimations();
rv = mTimedElement.EndElementAt(offset);
if (rv.Failed()) return;
AnimationNeedsResample();
// Force synchronous sample
FlushAnimations();
}
bool SVGAnimationElement::IsEventAttributeNameInternal(nsAtom* aName) {
return nsContentUtils::IsEventAttributeName(aName, EventNameType_SMIL);
}
void SVGAnimationElement::UpdateHrefTarget(const nsAString& aHrefStr) {
if (nsContentUtils::IsLocalRefURL(aHrefStr)) {
mHrefTarget.ResetToLocalFragmentID(*this, aHrefStr);
} else {
mHrefTarget.Unlink();
}
AnimationTargetChanged();
}
void SVGAnimationElement::AnimationTargetChanged() {
mTimedElement.HandleTargetElementChange(GetTargetElementContent());
AnimationNeedsResample();
}
} // namespace mozilla::dom