Re: [Fxruby-users] tree list navigation

[Hal F. <ha...@hy...>]

RLMuller wrote:
> Woops.  This is getting over my head:  I'm too new at Ruby to address the
> issues you raised below.  I'm ducking out of this thread,  though I
> reiterate that I look forward to seeing your results.

Oh, you needn't duck out. It's more to do with Fox or fxruby than
Ruby as such. I've written a few thousand lines with fxruby, but
I still find Fox very difficult.

So duck back in any time. And if I do get it to work, I will share
it with you and the rest of the list.

Hal


> Regards,
> Richard
> 
> ----- Original Message ----- 
> From: "Hal Fulton" <ha...@hy...>
> To: <fxr...@li...>
> Sent: Tuesday, July 06, 2004 10:49 AM
> Subject: Re: [Fxruby-users] tree list navigation
> 
> 
> 
>>RLMuller wrote:
>>
>>>>But I'm more concerned with "How do I do it?"
>>>>than what key to map.
>>>
>>>
>>>I think you asked "What to do?",  i.e. ignore undisplayed data (an
> 
> interface
> 
>>>issue), rather than "How do I do it?", i.e. a programming issue.  I just
>>>felt that choice of a key was at the interface level also.
>>>
>>>In any case,  I'd look forward to seeing your working model.
>>
>>
>>I see what you mean. But I was trying to talk about a programming issue.
>>Note I said:
>>
>> > This seems an order of magnitude easier to me than drag/drop.
>> > Am I wrong? Easier to code, not to use, I mean.
>>
>>And also:
>>
>> > It would be nice if there were some concept of "next" and
>> > "previous" that was independent of the actual tree structure,
>> > but dependent on the current collapsed/expanded state of the
>> > tree.
>>
>>Which is obviously an implementation issue, not interface.
>>
>>The interface explanation was in anticipation of the (unspoken but
>>natural) question: "Why would you want to do that?"
>>
>>You're right, of course -- on the keyboard, something like alt-down
>>is far better than something like F8.
>>
>>Let me restate this more clearly:
>>
>>1. I'd love to be able to manually drag/drop items in a tree list.
>>2. However, knowing a little about tree lists and a little about
>>drag/drop, I would estimate that adding this functionality would be
>>dozens of lines of code if not hundreds, and would be dozens of hours
>>of painful debugging.
>>3. Therefore I'm considering simple "move up one" and "move down one"
>>keyboard shortcuts.
>>4. I believe this would be simpler to code.
>>5. Now to get to the meat of the matter:
>>6. To code this simply would involve a concept of "next" and
>>"previous" that ignored the collapsed/expanded status of each node.
>>7. Therefore I've been looking in the API to see whether methods
>>exist for this kind of traversal. AFAICT they don't.
>>8. Therefore I'll apparently have to code some methods myself.
>>9. So can anyone offer me any advice or assistance?
>>
>>Thanks,
>>Hal
>>
>>
>>
>>>Regards,
>>>Richard
>>>
>>>----- Original Message ----- 
>>>From: "Hal Fulton" <ha...@hy...>
>>>To: <fxr...@li...>
>>>Sent: Tuesday, July 06, 2004 9:29 AM
>>>Subject: Re: [Fxruby-users] tree list navigation
>>>
>>>
>>>
>>>
>>>>RLMuller wrote:
>>>>
>>>>
>>>>>Hi Hal,
>>>>>
>>>>>It sounds intuitive to me,  i.e. navigating on what's visible and
>>>
>>>ignoring
>>>
>>>
>>>>>what's not.  For what it's worth,  I'd be inclined to map
> 
> alt-down-arrow
> 
>>>to
>>>
>>>
>>>>>that functionality, rather than F8.
>>>>
>>>>That makes sense. But I'm more concerned with "How do I do it?" than
>>>>what key to map.
>>>>
>>>>It would seem that some wrestling and testing should make it work.
>>>>There's apparently no built-in way to treat a tree list in this way.
>>>>
>>>>Hal
>>>>
>>>>
>>>>
>>>>
>>>>>Regards,
>>>>>Richard
>>>>>
>>>>>----- Original Message ----- 
>>>>>From: "Hal Fulton" <ha...@hy...>
>>>>>To: <fxr...@li...>
>>>>>Sent: Tuesday, July 06, 2004 7:43 AM
>>>>>Subject: [Fxruby-users] tree list navigation
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>>I'm thinking of using a couple of function keys to move items
>>>>>>up/down in a tree list.
>>>>>>
>>>>>>This seems an order of magnitude easier to me than drag/drop.
>>>>>>Am I wrong? Easier to code, not to use, I mean.
>>>>>>
>>>>>>So anyway:
>>>>>>
>>>>>>It would be nice if there were some concept of "next" and
>>>>>>"previous" that was independent of the actual tree structure,
>>>>>>but dependent on the current collapsed/expanded state of the
>>>>>>tree.
>>>>>>
>>>>>>For example: Suppose I have a new entry NEW, and I have F8
>>>>>>mapped to a "move down" command.
>>>>>>
>>>>>>Here I'm representing collapsed and expanded nodes by + and -
>>>>>>respectively. Use a monospaced font to look at this. :)
>>>>>>
>>>>>>Given this tree:
>>>>>>
>>>>>>  - NEW
>>>>>>  + Stooges
>>>>>>  + Dwarves
>>>>>>  + Fates
>>>>>>  + Muses
>>>>>>
>>>>>>Suppose I select NEW and press F8 three times -- I'd expect
>>>>>>this as a result:
>>>>>>
>>>>>>  + Stooges
>>>>>>  + Dwarves
>>>>>>  + Fates
>>>>>>  - NEW
>>>>>>  + Muses
>>>>>>
>>>>>>On the other hand, suppose I start with this tree:
>>>>>>
>>>>>>  - NEW
>>>>>>  - Stooges
>>>>>>    - Larry
>>>>>>    - Curly
>>>>>>    - Moe
>>>>>>  + Dwarves
>>>>>>  + Fates
>>>>>>  + Muses
>>>>>>
>>>>>>and again select NEW and press F8 three times. I'd then expect:
>>>>>>
>>>>>>  - Stooges
>>>>>>    - Larry
>>>>>>    - Curly
>>>>>>    - NEW
>>>>>>    - Moe
>>>>>>  + Dwarves
>>>>>>  + Fates
>>>>>>  + Muses
>>>>>>
>>>>>>In other words, traverse the tree "as is" -- is this doable??
>>>>>>
>>>>>>Obviously I'd like to be able to move not just single items but
>>>>>>entire subtrees.
>>>>>>
>>>>>>Thanks for any insight...
>>>>>>
>>>>>>
>>>>>>Hal
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
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