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https://github.com/nim-lang/Nim.git
synced 2026-02-25 12:25:08 +00:00
Renamed new* to init*.
Added example code for documentation. Fixed a small documentation issue. Rewrote newEventEmitter... Updated test.
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@@ -11,11 +11,28 @@
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##
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## This module implements an event system that is not dependant on external
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## graphical toolkits. It was originally called ``NimEE`` because
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## it was inspired by Ptyhon's PyEE module.
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## it was inspired by Python's PyEE module. There are two ways you can use events: one is a python-inspired way; the other is more of a C-style way.
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## .. code-block:: Nimrod
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## var ee = initEventEmitter()
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## var genericargs : TEventArgs
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## proc handleevent(e : TEventArgs) =
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## echo("Handled!")
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##
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## # Python way
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## ee.on("EventName", handleevent)
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## ee.emit("EventName", genericargs)
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##
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## # C/Java way
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## # Declare a type
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## type
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## TSomeObject = object of TObject
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## SomeEvent : TEventHandler
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## var myobj : TSomeObject
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## myobj.SomeEvent = initEventHandler("SomeEvent")
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## myobj.SomeEvent.addHandler(handleevent)
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## ee.emit(myobj.SomeEvent, genericargs)
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type
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TEventArgs* = object of TObject ## Base object for event arguments
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## that are passed to callback functions.
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TEventArgs* = object of TObject ## Base object for event arguments that are passed to callback functions.
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TEventHandler* = tuple[name: string, handlers: seq[proc(e:TEventArgs)]] ## An eventhandler for an event.
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type
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@@ -23,7 +40,7 @@ type
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s: seq[TEventHandler]
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EInvalidEvent* = object of EInvalidValue
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proc newEventHandler*(name: string): TEventHandler =
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proc initEventHandler*(name: string): TEventHandler =
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## Initializes an EventHandler with the specified name and returns it.
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#new(result)
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result.handlers = @[]
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@@ -73,9 +90,7 @@ proc emit*(emitter: var TEventEmitter, event: string, args: TEventArgs) =
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else:
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raise newException(EInvalidEvent, "invalid event: " & event)
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proc newEventEmitter*(): TEventEmitter =
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proc initEventEmitter*(): TEventEmitter =
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## Creates and returns a new EventEmitter.
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#new(result)
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var result : TEventEmitter
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result.s = @[]
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return result
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result.s = @[]
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@@ -18,7 +18,7 @@ proc handleprintevent2*(e: TEventArgs) =
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var args: TPrintEventArgs = TPrintEventArgs(e)
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write(stdout, "HandlePrintEvent2: Output -> printing for " & args.user)
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var ee = newEventEmitter()
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var ee = initEventEmitter()
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var eventargs: TPrintEventArgs
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eventargs.user = "ME\n"
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@@ -37,7 +37,7 @@ type
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PrintEvent: TEventHandler
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var obj: TSomeObject
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obj.PrintEvent = newEventHandler("print")
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obj.PrintEvent = initEventHandler("print")
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obj.PrintEvent.addHandler(handleprintevent2)
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ee.emit(obj.PrintEvent, eventargs)
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