I'm trying to make an app with several sub-editors. I'm writing a base Editor type that each type of editor will Extend.
Type TEditor
' Event Handling
Method OnEvent(event:TEvent) Abstract
Function EventHook:Object(id,data:Object,context:Object)
Local event:TEvent = TEvent(data)
Local editor:TEditor = TEditor(context)
editor.OnEvent(event)
Return data
End Function
'Instantiation Handling
Method Open()
AddHook EmitEventHook,EventHook,Self
If Window
ShowGadget Window
Else
MakeWindow()
End If
End Method
Method MakeWindow() Abstract
Method Close()
RemoveHook EmitEventHook,EventHook ' <<<<--- THIS BIT
HideGadget Window
End Method
End Type
What I don't understand is, how come I don't have to specify the context when I remove a hook? Surely if I have two different editors running, and I close one, it doesn't know which hook to remove and might continue calling TEditor.EventHook with the wrong context?
(In case you're wondering why I'm hiding and showing the window rather than freeing the gadget and then re-making it each time, it seems to me that if there's a Canvas gadget in the window (and there will be for most of the editors) there's nothing I can do to stop it taking more and more memory and not freeing it when the gadget is freed, is this right?)
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