// ===========================
private bool CheckPropertyBit(BoolPropertyBits propertyBit)
{
int bit = (int)propertyBit;
if (0 != (_validPropertyBits & bit))
{
return(0 != (_cachedPropertyBits & bit));
}
bool isBitTrue = LookupPropertyBit(propertyBit);
_validPropertyBits |= bit;
if (isBitTrue)
{
_cachedPropertyBits |= bit;
}
return(isBitTrue);
}
private bool LookupPropertyBit(BoolPropertyBits propertyBit)
{
bool bit;
switch (propertyBit)
{
case BoolPropertyBits.IsAmbient:
bit = LookupIsAmbient();
break;
case BoolPropertyBits.IsBrowsable:
bit = LookupIsBrowsable();
break;
case BoolPropertyBits.IsObsolete:
bit = LookupIsObsolete();
break;
default:
throw new XamlInternalException(SR.Get(SRID.MissingLookPropertyBit));
}
return(bit);
}
