swing.FileChooser should be a Component

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the swing lib shows

class FileChooser(dir : java.io.File) extends AnyRef

but JFileChooser sends PropertyChangeEvents and ActionEvents.
This feature is essential e.g. for accessory components.

http://java.sun.com/docs/books/tutorial/uiswing/components/filechooser.html#accessory

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Imported From: https://issues.scala-lang.org/browse/SI-1824?orig=1
Reporter: Frank Teubler (dft)

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@SethTisue said:
The scala-swing library is now community-maintained. Issues with it are now tracked at https://github.com/scala/scala-swing instead of here in the Scala JIRA.

Interested community members: if you consider this issue significant, feel free to open a new issue for it on GitHub, with links in both directions.