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Impossible to implement Java interface, like javafx.scene.control.Skinnable #8231

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scabug opened this issue Feb 3, 2014 · 2 comments
Closed

Impossible to implement Java interface, like javafx.scene.control.Skinnable #8231

scabug opened this issue Feb 3, 2014 · 2 comments
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@adriaanm
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blocker duplicate regression
Milestone
2.11.0-RC1

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@scabug
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scabug commented Feb 3, 2014

The following code compiles with 2.10.3 but fails with 2.11.0-M8:

  val skinnable = new javafx.scene.control.Skinnable {
    def skinProperty = null
    def getSkin = null
    def setSkin(s: javafx.scene.control.Skin[_]) {}
  }

fails with error message:

[error] ...: object creation impossible, since method setSkin in trait Skinnable of type (x$1: javafx.scene.control.Skin
[_])Unit is not defined
[error] (Note that javafx.scene.control.Skin[_] does not match javafx.scene.control.Skin[_ <: javafx.scene.control.Skinnable]: their type parameters differ)
[error]   val skinnable = new javafx.scene.control.Skinnable {
[error]                       ^

In Java "setSkin" is defines as:

void setSkin(Skin<?> value)

see http://docs.oracle.com/javafx/2/api/javafx/scene/control/Skinnable.html

This is a critical bug since there is no workaround, that I can see.

A sample SBT project is attached (you need to define variable JAVA_HOME pointing to Java 1.7 SDK installation).
@scabug
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scabug commented Feb 3, 2014

Imported From: https://issues.scala-lang.org/browse/SI-8231?orig=1
Reporter: Jarek Sacha (jpsacha)
Affected Versions: 2.11.0-M8
Attachments:

@scabug
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scabug commented Feb 4, 2014

@adriaanm said:
I confirmed my fix for #6169 fixes this one. Closing as duplicate -- thanks for the small reproduction!

@scabug scabug closed this as completed Feb 4, 2014
@scabug scabug added this to the 2.11.0-RC1 milestone Apr 7, 2017
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