HSL Error Trapping Functions
From HEWIKI
(Redirected from CallMethodIfPresent)
These are external functions on both the client and server, which provide ways to invoke script as separate events. This is primarily useful to prevent a runtime "script error" from stopping other important script operations.
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CallMethod
CallMethod(meNode as NodeRef, methodName as String, data as NodeRef) as Boolean
Synchronously calls a method, returning true if the call ran to completion, or false if there was an error. More expensive than directly calling a method with node.methodName
CallMethodPostEvent
CallMethodPostEvent(meNode as NodeRef, methodName as String, data as NodeRef)
Like CallMethod but is a bit more efficient. Asynchronously calls a method after the current script is finished running. With CallMethodPostEvent, the node, method, and argument are saved until the call into script is done.
CallMethodIfPresent
CallMethodIfPresent(meNode as NodeRef, methodName as String, data as NodeRef) as Boolean
Like CallMethod but does not error if the method does not exist
