void copyStringConstraint(ConstrainDOMStringParameters blinkForm, StringConstraint& webForm)
{
WebVector<WebString> ideal;
WebVector<WebString> exact;
if (blinkForm.hasIdeal()) {
ideal = WebVector<WebString>(blinkForm.ideal());
}
if (blinkForm.hasExact()) {
exact = WebVector<WebString>(blinkForm.exact());
}
webForm = StringConstraint(ideal, exact);
}
static Optional<StringConstraint> createStringConstraint(const Dictionary& mediaTrackConstraintSet, const String& name, MediaConstraintType type, ConstraintSetType constraintSetType)
{
auto constraint = StringConstraint(name, type);
// Dictionary constraint value.
Dictionary dictionaryValue;
if (mediaTrackConstraintSet.get(name, dictionaryValue) && !dictionaryValue.isUndefinedOrNull()) {
ArrayValue exactArrayValue;
if (dictionaryValue.get("exact", exactArrayValue) && !exactArrayValue.isUndefinedOrNull())
initializeStringConstraintWithList(constraint, &StringConstraint::appendExact, exactArrayValue);
else {
String exactStringValue;
if (dictionaryValue.get("exact", exactStringValue))
constraint.setExact(exactStringValue);
}
ArrayValue idealArrayValue;
if (dictionaryValue.get("ideal", idealArrayValue) && !idealArrayValue.isUndefinedOrNull())
initializeStringConstraintWithList(constraint, &StringConstraint::appendIdeal, idealArrayValue);
else {
String idealStringValue;
if (!dictionaryValue.get("ideal", idealStringValue))
constraint.setIdeal(idealStringValue);
}
if (constraint.isEmpty()) {
LOG(Media, "createStringConstraint() - ignoring string constraint '%s' with dictionary value since it has no valid or supported key/value pairs.", name.utf8().data());
return Nullopt;
}
return WTFMove(constraint);
}
// Array constraint value.
ArrayValue arrayValue;
if (mediaTrackConstraintSet.get(name, arrayValue) && !arrayValue.isUndefinedOrNull()) {
initializeStringConstraintWithList(constraint, &StringConstraint::appendIdeal, arrayValue);
if (constraint.isEmpty()) {
LOG(Media, "createStringConstraint() - ignoring string constraint '%s' with array value since it is empty.", name.utf8().data());
return Nullopt;
}
return WTFMove(constraint);
}
// Scalar constraint value.
String value;
if (mediaTrackConstraintSet.get(name, value)) {
if (constraintSetType == ConstraintSetType::Mandatory)
constraint.setIdeal(value);
else
constraint.setExact(value);
return WTFMove(constraint);
}
// Invalid constraint value.
LOG(Media, "createStringConstraint() - ignoring string constraint '%s' since it has neither a dictionary nor sequence nor scalar value.", name.utf8().data());
return Nullopt;
}
