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TextFieldListCell.converter_=(c) method does not work #262

atrosinenko opened this issue Feb 4, 2017 · 0 comments

TextFieldListCell.converter_=(c) method does not work #262

atrosinenko opened this issue Feb 4, 2017 · 0 comments


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@atrosinenko atrosinenko commented Feb 4, 2017

The TextFieldListCell.converter_=(c) method does not change text converter property of the underlying delegate.

How to reproduce

Run the following test:

package issues.issue262

import javafx.util.converter.IntegerStringConverter

import org.junit.runner.RunWith
import org.scalatest.FlatSpec
import org.scalatest.Matchers._
import org.scalatest.junit.JUnitRunner

import scalafx.Includes._
import scalafx.scene.control.cell.TextFieldListCell
import scalafx.testutil.RunOnApplicationThread

class Issue262Spec extends FlatSpec with RunOnApplicationThread {
  "TextFieldListCell" should "support changing of StringConverter" in {
    val cell = new TextFieldListCell[Integer]
    cell.converter = new IntegerStringConverter
    cell.converter.value.fromString("123") should be(123)

When executed, it throws an exception:

[info] Issue262Spec:
[info] TextFieldListCell
[info] - should support changing of StringConverter *** FAILED ***
[info]   java.lang.NullPointerException:
[info]   at scalafx.util.UtilIncludes$$anon$1.fromString(UtilIncludes.scala:115)
[info]   at issues.issue262.Issue262Spec$$anonfun$1.apply(Issue262Spec.scala:19)
[info]   at issues.issue262.Issue262Spec$$anonfun$1.apply(Issue262Spec.scala:16)
[info]   at org.scalatest.OutcomeOf$class.outcomeOf(OutcomeOf.scala:85)
[info]   at org.scalatest.OutcomeOf$.outcomeOf(OutcomeOf.scala:104)
[info]   at org.scalatest.Transformer.apply(Transformer.scala:22)
[info]   at org.scalatest.Transformer.apply(Transformer.scala:20)
[info]   at org.scalatest.FlatSpecLike$$anon$1.apply(FlatSpecLike.scala:1682)
[info]   at org.scalatest.TestSuite$class.withFixture(TestSuite.scala:196)
[info]   at issues.issue262.Issue262Spec.scalafx$testutil$RunOnApplicationThread$$super$withFixture(Issue262Spec.scala:15)
[info]   ...
atrosinenko added a commit to atrosinenko/scalafx that referenced this issue Feb 4, 2017
Fixes scalafx#262. The `converter()` method of the `ConvertableCell` trait
was creating a fresh ScalaFX `ObjectProperty` out of the ***value***
of underlying `converterProperty()`. While it is OK when reading the
converter value, it didn't work for ***setting*** new converter through
this wrapper from ScalaFX (this can still be achieved through the

This commit changes the `converter()` method to return a wrapper
for the underlying ***property*** instead of value.

This change technically can break some existing code, though,
since it changes the type of the `converter()` method.
@jpsacha jpsacha closed this in #263 Feb 9, 2017
@jpsacha jpsacha added the bug label Feb 9, 2017
@jpsacha jpsacha added this to the 8.0.*-R12 milestone Feb 9, 2017
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