/* static */ Maybe<ComputedTimingFunction> TimingParams::ParseEasing(const nsAString& aEasing, nsIDocument* aDocument, ErrorResult& aRv) { MOZ_ASSERT(aDocument); nsCSSValue value; nsCSSParser parser; parser.ParseLonghandProperty(eCSSProperty_animation_timing_function, aEasing, aDocument->GetDocumentURI(), aDocument->GetDocumentURI(), aDocument->NodePrincipal(), value); switch (value.GetUnit()) { case eCSSUnit_List: { const nsCSSValueList* list = value.GetListValue(); if (list->mNext) { // don't support a list of timing functions break; } switch (list->mValue.GetUnit()) { case eCSSUnit_Enumerated: // Return Nothing() if "linear" is passed in. if (list->mValue.GetIntValue() == NS_STYLE_TRANSITION_TIMING_FUNCTION_LINEAR) { return Nothing(); } MOZ_FALLTHROUGH; case eCSSUnit_Cubic_Bezier: case eCSSUnit_Steps: { nsTimingFunction timingFunction; nsRuleNode::ComputeTimingFunction(list->mValue, timingFunction); ComputedTimingFunction computedTimingFunction; computedTimingFunction.Init(timingFunction); return Some(computedTimingFunction); } default: MOZ_ASSERT_UNREACHABLE("unexpected animation-timing-function list " "item unit"); break; } break; } case eCSSUnit_Inherit: case eCSSUnit_Initial: case eCSSUnit_Unset: case eCSSUnit_TokenStream: case eCSSUnit_Null: break; default: MOZ_ASSERT_UNREACHABLE("unexpected animation-timing-function unit"); break; } aRv.ThrowTypeError<dom::MSG_INVALID_EASING_ERROR>(aEasing); return Nothing(); }
/* static */ Maybe<ComputedTimingFunction> AnimationUtils::ParseEasing(const dom::Element* aTarget, const nsAString& aEasing) { if (!aTarget) { return Nothing(); } nsIDocument* doc = aTarget->OwnerDoc(); nsCSSValue value; nsCSSParser parser; parser.ParseLonghandProperty(eCSSProperty_animation_timing_function, aEasing, doc->GetDocumentURI(), doc->GetDocumentURI(), doc->NodePrincipal(), value); switch (value.GetUnit()) { case eCSSUnit_List: { const nsCSSValueList* list = value.GetListValue(); if (list->mNext) { // don't support a list of timing functions break; } switch (list->mValue.GetUnit()) { case eCSSUnit_Enumerated: // Return Nothing() if "linear" is passed in. if (list->mValue.GetIntValue() == NS_STYLE_TRANSITION_TIMING_FUNCTION_LINEAR) { return Nothing(); } // Fall through case eCSSUnit_Cubic_Bezier: case eCSSUnit_Steps: { nsTimingFunction timingFunction; nsRuleNode::ComputeTimingFunction(list->mValue, timingFunction); ComputedTimingFunction computedTimingFunction; computedTimingFunction.Init(timingFunction); return Some(computedTimingFunction); } default: MOZ_ASSERT_UNREACHABLE("unexpected animation-timing-function list " "item unit"); break; } break; } case eCSSUnit_Null: case eCSSUnit_Inherit: case eCSSUnit_Initial: case eCSSUnit_Unset: case eCSSUnit_TokenStream: break; default: MOZ_ASSERT_UNREACHABLE("unexpected animation-timing-function unit"); break; } return Nothing(); }