What is an "item" or convert a string to an item - Calendar Types in CalendarLib EC

Scripting Forums AppleScriptObjC and Xcode
#1

CalendarLib EC is a script library for manipulating calendar events without using the Calendar application. Why? Its faster and probably more flexible.

This code snip shows a typical call to the library, note that the cal type is required and in this case is : cal cloud

set theStore to fetch store
set theCal to fetch calendar "Work" cal type cal cloud event store theStore

I have been attempting to pass the cal type in the form of a variable but the library throws an error “invalid cal type” and suggests that the type required is an item

set tCalType to CalendarType(pCalendarName, pCalTypesLst) -->
	-->tCalType is a string "cal type"
	set tSourceCal to fetch calendar pCalendarName cal type tCalType event store pTheStore

While I can hard code my call as per the first code snip I wonder if there is a way of coercing my variable into a form that is accepted by the fetch calendar handler. This handler is listed below and I have to admit that I do not understand the first code line → cal type calType, looking at the code here suggests that calType is a string but it is not as it gets displayed in blue in editor and a string throws an error.

-- You often need a reference to the relevant calendar; get it here.
on fetch calendar calName cal type calType event store theStore
	if calType = cal local then
		set calType to 0
	else if calType = cal cloud then
		set calType to 1
	else if calType = cal exchange then
		set calType to 2
	else if calType = cal subscription then
		set calType to 3
	else if calType = cal birthday then
		set calType to 4
	else
		error "Invalid cal type"
	end if
....

thanks in advance,
Simon

#2

From the pdf guide I see that the list of types are enum :

cal types enum : Calendar types
cal local : Local.
cal cloud : iCloud/CalDAV.
cal exchange : Exchange.
cal subscription : Subscription.
cal birthday : Birthday.

Simon

#3

Solving my own dumb question:

set tCalType to cal cloud
set tSourceCal to fetch calendar pCalendarName cal type tCalType event store pTheStore

So is an enum a little like a list of constants? I did try passing an integer but that failed which suggests an enum is a more complex type or class.

Simon

#4

It’s not so much complex, as simply required – you can’t pass a string or any other class instead.