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List:       openjdk-openjfx-dev
Subject:    Re: Scroll events fired in TableView although there is nothing to scroll
From:       Robert_Krüger <krueger () lesspain ! de>
Date:       2015-01-25 12:05:04
Message-ID: CAEnqZEXOfzsv0PdBzU4fGuk4sfy8_L=FeMbpQ6VvcdPXG_bgzg () mail ! gmail ! com
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yes, that's what appear's to be happening.

On Sat, Jan 24, 2015 at 9:33 PM, Scott Palmer <swpalmer@gmail.com> wrote:

> You are probably only seeing the event when the TableView's internal
> ScrollPane doesn't consume it.
>
> Scott
>
> > On Jan 24, 2015, at 11:50 AM, Robert Krüger <krueger@lesspain.de> wrote:
> >
> > Hi,
> >
> > yes, I just now realized that setOnScroll is Node API and not TableView
> so
> > I obviously sent my Mail too early.
> >
> > Sorry about the noise.
> >
> > Another observation, though: The onscroll-eventhandler is not called when
> > the tableview actually does scroll. It does fire again, when I reach one
> > end of the data and keep using scroll gestures. Interesting but
> irrelevant
> > for my case.
> >
> > Thanks for your response,
> >
> > Robert
> >
> >
> >
> > On Sat, Jan 24, 2015 at 4:17 PM, Tom Schindl <
> tom.schindl@bestsolution.at>
> > wrote:
> >
> >> [sorry sent the other mail too early]
> >>
> >> Hi,
> >>
> >> I don't really see why you need to know about this all view classes are
> >> virtual so a TableCell, ListCell is only requested when shown - and then
> >> reused.
> >>
> >> IIRC this virtuallity is row based only but the otn request also only
> >> talks about rows.
> >>
> >> One more note on the onScroll which has nothing todo with the scrollbars
> >> - it simply tells you that:
> >> a) someone used the scrollwheel on the mouse
> >> b) used the scroll gesture eg on the touch pad
> >>
> >> So I think you did not really get what onScroll is doing.
> >>
> >> Tom
> >>
> >>> On 24.01.15 14:15, Robert Krüger wrote:
> >>> Hi,
> >>>
> >>> I am a bit surprised by the behaviour of the onScroll event handling of
> >>> TableView. I just printed the events I received there to standard out
> and
> >>> although the table does not display any scrollbars because it is large
> >>> enough to fit all content into it, I receive events as if it were
> >> scrolling
> >>> (even with the physics/inertia I would expect from a scrollbar, i.e. it
> >>> takes a while after the scroll gesture for the events to stop firing).
> >>>
> >>> As an API user I would never have expected this. This makes me wonder
> how
> >>> useful the event handler is in the first place as I cannot use it to
> see
> >> if
> >>> there is actually any scrolling going on in the table. How do I do
> that?
> >>>
> >>> This is somewhat related to a post on OTN (
> >>> https://community.oracle.com/message/12810930#12810930) if anyone
> wants
> >> to
> >>> know what the broader context of this is.
> >>>
> >>> Best regards,
> >>>
> >>> Robert
> >>
> >>
> >> --
> >> Thomas Schindl, CTO
> >> BestSolution.at EDV Systemhaus GmbH
> >> Eduard-Bodem-Gasse 5-7, A-6020 Innsbruck
> >> http://www.bestsolution.at/
> >> Reg. Nr. FN 222302s am Firmenbuchgericht Innsbruck
> >
> >
> >
> > --
> > Robert Krüger
> > Managing Partner
> > Lesspain GmbH & Co. KG
> >
> > www.lesspain-software.com
>



-- 
Robert Krüger
Managing Partner
Lesspain GmbH & Co. KG

www.lesspain-software.com
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