Thanks for the reponses Paolo. I'm going back in to reexamine all of
the TaskFrame code today. After some tinkering yesterday I realize it
is best to proceed with a light hand.

The Sunburned Surveyor

On Fri, Jul 4, 2008 at 3:29 AM, P.Rizzi Ag.Mobilità Ambiente
<[EMAIL PROTECTED]> wrote:
> I never looked at this code, but from you wrote here
> I, personally, would leave the interface in place.
>
> Even if now only the TaskFrame class implements the
> Task.TaskNameListener interface who can tell if in
> some near or distant future some other class would need to???
>
> An interface specify a "behaviour", while a class specifiy a "nature",
> and those are two different things.
>
> Maybe a plugin will need to listen to a Task name and it can do it
> by implementing the interface and it's behaviuor.
>
> If you remove the interface you bound the Task class to the TaskFrame,
> so that no other class will ever be able to listen to it, and this is not 
> good...
>
> If you really want to remove the interface I suggest you modify the Task
> class to accept any Object as a listener. Then it can discover by reflection
> if that Object indeed has a taskNameChanged(String argName) method
> and it will call it by reflection too.
>
> Bye
> Paolo Rizzi
>
>
>> -----Messaggio originale-----
>> Da: [EMAIL PROTECTED]
>> [mailto:[EMAIL PROTECTED] conto di
>> Sunburned Surveyor
>> Inviato: giovedì 3 luglio 2008 17.32
>> A: OpenJump develop and use
>> Oggetto: [JPP-Devel] The internal Task.TaskNameListener interface is
>> notnecessary.
>>
>>
>> See if you can follow this logic.
>>
>> The Task class declares an internal interface named TaskNameListener.
>> This internal interface contains a single methor,
>> taskNameChanged(String argName). There is only one class that
>> implements this interface, TaskFrame.
>>
>> However, TaskFrame never uses the String argument from this method. If
>> there is a name change the TaskFrame accesses the name from the Task
>> it displays directly.
>>
>> Unless we think there will be other implementations of the
>> TaskNameListener in the future, I recommend we remove the
>> Task.TaskNameListener interface. It is unecessary "code fat". We
>> should do this instead:
>>
>> - Replace the list of Task.TaskNameListeners in each Task object with
>> a list of TaskFrame references.
>> - Leave a no-argument taskNameChanged method on the TaskFrame class.
>> - When a TaskFrame is being constructed to display a Task, add a
>> reference to the TaskFrame to the list of TaskFrames in the Task that
>> will be displayed.
>>
>> This will accomplish the same thing, without the need for the
>> TaskNameListener interface and the taskNameChanged(String argName)
>> method whose String argument is never used.
>>
>> The Sunburned Surveyor
>>
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