float SVGLengthTearOff::value(ExceptionState& exceptionState) {
if (target()->isRelative() && !canResolveRelativeUnits(contextElement())) {
exceptionState.throwDOMException(NotSupportedError,
"Could not resolve relative length.");
return 0;
}
SVGLengthContext lengthContext(contextElement());
return target()->value(lengthContext);
}
void SVGLengthTearOff::setValue(float value, ExceptionState& exceptionState)
{
if (isImmutable()) {
exceptionState.throwDOMException(NoModificationAllowedError, "The attribute is read-only.");
return;
}
if (target()->isRelative() && !canResolveRelativeUnits(contextElement())) {
exceptionState.throwDOMException(NotSupportedError, "Could not resolve relative length.");
return;
}
SVGLengthContext lengthContext(contextElement());
target()->setValue(value, lengthContext);
commitChange();
}
void SVGLengthTearOff::setValue(float value, ExceptionState& exceptionState) {
if (isImmutable()) {
throwReadOnly(exceptionState);
return;
}
if (target()->isRelative() && !canResolveRelativeUnits(contextElement())) {
exceptionState.throwDOMException(NotSupportedError,
"Could not resolve relative length.");
return;
}
SVGLengthContext lengthContext(contextElement());
if (target()->isCalculated())
target()->setValueAsNumber(value);
else
target()->setValue(value, lengthContext);
commitChange();
}
void SVGLengthTearOff::convertToSpecifiedUnits(unsigned short unitType, ExceptionState& exceptionState)
{
if (isImmutable()) {
exceptionState.throwDOMException(NoModificationAllowedError, "The object is read-only.");
return;
}
if (!isValidLengthUnit(unitType)) {
exceptionState.throwDOMException(NotSupportedError, "Cannot convert to unknown or invalid units (" + String::number(unitType) + ").");
return;
}
if ((target()->isRelative() || SVGLength::isRelativeUnit(toCSSUnitType(unitType)))
&& !canResolveRelativeUnits(contextElement())) {
exceptionState.throwDOMException(NotSupportedError, "Could not resolve relative length.");
return;
}
SVGLengthContext lengthContext(contextElement());
target()->convertToSpecifiedUnits(toCSSUnitType(unitType), lengthContext);
commitChange();
}
