Tim Rowledge wrote:
> 
> In message <3978FE14.FB8EBEE1 at evolgo.de>
>           Stephan Rudlof <sr at evolgo.de> wrote:
> 
> > In PluggableListMorphs there are two clicks necessary to deselect/select
> > an already selected/deselected item, if the mouse stays at the same
> > point. If you move it a little, then you need just one click (as
> > expected).
> >
> > Seems to be one of the odd (not serious) effects if event stuff is
> > introduced.
> Fixed it, or should I say, found a workaround.
> The bug was noted in several symptonms:-
> 1. when using meta-F to open a find FillInTheBlank, you had to move the
> mouse a little to get the FITB to activate
> 2. if you deselect an item in a pluggablelistmorph, you had to click
> twice to get it to reselelct unles you moved the mouse
> 3. if you drag select down (or up) out of a view with a large text, the
> drag-scroll would stop after a very short while.
> 
> All these symptoms are related to an architectural bug in the Morphic
> processEvents code. The code is relying on an artifact of the old
> mouse-state-polling regime that provided a fake mouse-move event every
> time HandMorph>processEvents was called. Naughty code!! It seems
> primarily to be related to #mouseOver: not getting called unless this
> fake event is provided.
> The FITB for example really ought to activate explicitly, since we
> deliberately open it, rather than misusing #mouseOver:.
> 
> As a workaround, I have made the event code provide a similar fake
> mousemove. This is ugly and the proper architectural change should be
> made by somebody that really understands the Morphic stuff.

I think we are reaching a branch point here: To go further beyond some
point would be much easier, if we'd decide to make the switch to event
code in Morphic, without always to have to take into account the
compatibility to the old polling code.

Stephan

> 
> tim
> --
> Tim Rowledge, tim at sumeru.stanford.edu, http://sumeru.stanford.edu/tim
> Strange OpCodes: ESBD: Erase System and Burn Documentation
> 
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>                          Name: TPR-EventFix1.1.cs
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-- 
Stephan Rudlof (sr at evolgo.de)
   "Genius doesn't work on an assembly line basis.
    You can't simply say, 'Today I will be brilliant.'"
    -- Kirk, "The Ultimate Computer", stardate 4731.3