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List:       openjdk-openjfx-dev
Subject:    Re: Dependencies on java.desktop
From:       Tom Schindl <tom.schindl () bestsolution ! at>
Date:       2018-03-27 16:38:35
Message-ID: 95b46e34-ebb3-9915-81d5-b94f3df4e53b () bestsolution ! at
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On 27.03.18 14:26, Kevin Rushforth wrote:
> Hi Tom,
> 
> Yes, this is an unfortunate dependency. It is "only" an implementation
> dependency, meaning that nothing in the public API depends on
> java.desktop (which is why we don't "requires transient java.desktop"),
> so it should be possible to remove this dependency in the future. As
> noted, it is only there because Java Beans is part of the java.desktop
> module.
> 
> In the interim, your suggestion of "requires static java.base" could be
> the way to go. It would need a spec change to the JavaFX beans adapter
> classes documenting that they would throw an
> UnsupportedOperationException if java.desktop was not present at

How can that happen. To write a JavaBean the consumer of the API by
definition has to have java.desktop as a dependency how else would he've
been able to construct the bean?

> runtime, along with a recommendation that applications needing that
> functionality should add "requires java.desktop" to their own
> module-info.java.
> 
> Note that this would only help non-graphical JavaFX applications that
> use javafx.base for its collections, properties, and bindings, since
> javafx.graphics requires java.desktop in a way that currently cannot
> easily be made optional (not without reimplementing printing support
> anyway).
> 

I understand but I guess here one could do a spec change to define that
printing is only available if one add java.desktop yourself as a dependency.

Looking at printing I might be better moved to its own module, the
problem with JPMS is that you can't move stuff after having released the
API module, I wished instead of "require module" JPMS would have used
"import package".

Tom
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