On 10/4/25 14:28, Jerome Lelasseux wrote:
> I'll try to update some NB docs regarding actions, because the overall thing
> is (too IMHO) complex...
thanks for updating the online doc btw! Some of it might be a but dusty by now.
(replied inline on your PR)
-mbien
> Jerome
>
>
> On 2025/10/03 19:31:02 Jerome Lelasseux wrote:
> Still trying to use NB annotations to declare a singleton action class, this
> is driving me nuts... I did some tests. Calling Actions.forID(x, y) twice in
> a row returns the same instance. Same for Utilities.actionsForPath(). Same in
> my app. BUT, if I run the second call to Actions.forID(x,y) a few seconds
> later in my app (I trigger it manually with the mouse) then, *sometimes*
> (1/3?), I get a new instance ! Same problem for Utilities.actionsForPath().
> Note that both calls are done on the EDT. I looked at the NB code on github,
> the underlying lookup mechanism in filesystem/RecognizeInstanceFiles.java is
> based on ProxyLookup, which uses lazy instanciation. So I assume that
> sometimes something happens differently here. But can not understand why... I
> noticed that Actions.forID() uses FileUtil.getFileObject(). Doc says "In
> environment with multiple contextual Lookups, the method may return different
> FileObject depending on what Lookup serves the executing thread." And
> recommends to use FileUtil.getSystemFileObject() to make sure to get a single
> instance. What is a "contextual lookup" here ? I guess I have to try recoding
> forID() with getSystemFileObject... Jerome On 2025/10/02 21:17:20 Jerome
> Lelasseux wrote: Hi, I have an action with a no-arg constructor :
> @ActionID(category = "jjazz", id = "myactionid")
> @ActionRegistration(displayName = "not_used", lazy = false)
> @ActionReference(path = "Actions/popupmenu", position = 100)public class
> MyAction extends AbstractAction........ In my code an instance is first
> created using Actions.forId("jjazz", "myactionid") I also want to use
> MyAction in a popup menu. I use Utilities.actionsForPath("Actions/popupmenu")
> to retrieve the actions before creating the popupmenu. But actionsForPath()
> creates a new instance of MyAction. Why ? I'm pretty sure in other cases
> it reuses the initial instance. Tried to debug but it does not work inside
> actionsForPath() -don't know why... Any tip welcome, thanks.
> Jerome
>
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