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Re: JavaFX: Bindings, StringConverters, and ChangeListeners

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Nigel Wade <nmw@ion.le.ac.uk> writes:

>> Oh, flashing is actually a nice idea and can be done pretty easily
>> from my listener.
>
> A single flash. Not flashing.

Yes, now I'm flashing once and really like the effect.  And it's good
that I got my hands dirty with JavaFX animations thereby.

>> The problem is that I have no control over when and where the string
>> in the text field is parsed and converted to a number.  I just
>> specified a declarative binding between the text field's text
>> property and an integer property with a standart converter and
>> thereby gave up exact control over these things.  But bindings are
>> such an integral part of FX that I guessed there must be some
>> standart way to treat invalid input so that the binding's converter
>> doesn't err.
>>
>
> I don't understand what implications there are with JavaFX. A normal
> scenario with Java/Swing is to either check the user input when the
> field loses focus, is committed by key press (Return) or when the user
> indicates via some GUI element that the input is complete.

Yes, right.  But with JavaFX, once you have established a binding
between a UI input control and a property, the synchronization seems to
happen immediately, that is, it doesn't wait for a loss of focus or some
special confirmation like pressing enter.

Bye,
Tassilo

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JavaFX: Bindings, StringConverters, and ChangeListeners Tassilo Horn <tsdh@gnu.org> - 2016-06-22 15:18 +0200
  Re: JavaFX: Bindings, StringConverters, and ChangeListeners Nigel Wade <nmw@ion.le.ac.uk> - 2016-06-22 15:22 +0100
    Re: JavaFX: Bindings, StringConverters, and ChangeListeners Tassilo Horn <tsdh@gnu.org> - 2016-06-23 08:39 +0200
      Re: JavaFX: Bindings, StringConverters, and ChangeListeners Martin Gregorie <martin@address-in-sig.invalid> - 2016-06-23 09:59 +0000
        Re: JavaFX: Bindings, StringConverters, and ChangeListeners Nigel Wade <nmw@ion.le.ac.uk> - 2016-06-23 12:19 +0100
      Re: JavaFX: Bindings, StringConverters, and ChangeListeners Nigel Wade <nmw@ion.le.ac.uk> - 2016-06-23 12:39 +0100
        Re: JavaFX: Bindings, StringConverters, and ChangeListeners Tassilo Horn <tsdh@gnu.org> - 2016-06-23 14:39 +0200
  Re: JavaFX: Bindings, StringConverters, and ChangeListeners Eric Douglas <e.d.programmer@gmail.com> - 2016-06-22 08:06 -0700
    Re: JavaFX: Bindings, StringConverters, and ChangeListeners Tassilo Horn <tsdh@gnu.org> - 2016-06-23 08:45 +0200
      Re: JavaFX: Bindings, StringConverters, and ChangeListeners Eric Douglas <e.d.programmer@gmail.com> - 2016-06-23 05:11 -0700
        Re: JavaFX: Bindings, StringConverters, and ChangeListeners Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-06-23 08:22 -0400
          Re: JavaFX: Bindings, StringConverters, and ChangeListeners Tassilo Horn <tsdh@gnu.org> - 2016-06-23 15:12 +0200
            Re: JavaFX: Bindings, StringConverters, and ChangeListeners Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-06-23 10:56 -0400

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