def __init__(self, elementRef):
# Check that we've been passed a valid IOHIDElement.
assert elementRef
assert cf.CFGetTypeID(elementRef) == iokit.IOHIDElementGetTypeID()
_element_lookup[elementRef.value] = self
self.elementRef = elementRef
# Set element properties as attributes.
self.cookie = iokit.IOHIDElementGetCookie(elementRef)
self.type = iokit.IOHIDElementGetType(elementRef)
if self.type == kIOHIDElementTypeCollection:
self.collectionType = iokit.IOHIDElementGetCollectionType(
elementRef)
else:
self.collectionType = None
self.usagePage = iokit.IOHIDElementGetUsagePage(elementRef)
self.usage = iokit.IOHIDElementGetUsage(elementRef)
self.isVirtual = bool(iokit.IOHIDElementIsVirtual(elementRef))
self.isRelative = bool(iokit.IOHIDElementIsRelative(elementRef))
self.isWrapping = bool(iokit.IOHIDElementIsWrapping(elementRef))
self.isArray = bool(iokit.IOHIDElementIsArray(elementRef))
self.isNonLinear = bool(iokit.IOHIDElementIsNonLinear(elementRef))
self.hasPreferredState = bool(
iokit.IOHIDElementHasPreferredState(elementRef))
self.hasNullState = bool(iokit.IOHIDElementHasNullState(elementRef))
self.name = cftype_to_value(iokit.IOHIDElementGetName(elementRef))
self.reportID = iokit.IOHIDElementGetReportID(elementRef)
self.reportSize = iokit.IOHIDElementGetReportSize(elementRef)
self.reportCount = iokit.IOHIDElementGetReportCount(elementRef)
self.unit = iokit.IOHIDElementGetUnit(elementRef)
self.unitExponent = iokit.IOHIDElementGetUnitExponent(elementRef)
self.logicalMin = iokit.IOHIDElementGetLogicalMin(elementRef)
self.logicalMax = iokit.IOHIDElementGetLogicalMax(elementRef)
self.physicalMin = iokit.IOHIDElementGetPhysicalMin(elementRef)
self.physicalMax = iokit.IOHIDElementGetPhysicalMax(elementRef)
def get_property(self, name):
cfname = CFSTR(name)
cfvalue = c_void_p(iokit.IOHIDDeviceGetProperty(
self.deviceRef, cfname))
cf.CFRelease(cfname)
return cftype_to_value(cfvalue)
