TailTipWidget Enabling by default

[rnc]

I have followed https://github.com/jline/jline3/wiki/Autosuggestions (which has

TailTipWidgets tailtipWidgets = new TailTipWidgets(reader, tailTips, 5, TipType.COMPLETER);
// Enable autosuggestions 
tailtipWidgets.enable();

) but I get Widgets can only be called during a readLine call.

For code like

                new TailTipWidgets(reader, systemRegistry::commandDescription, 5, TailTipWidgets.TipType.COMPLETER);
                KeyMap<Binding> keyMap = reader.getKeyMaps().get("main");
                keyMap.bind(new Reference("tailtip-toggle"), KeyMap.alt("s"));

what is the correct way of enabling it by default (so the user doesn't have to press Alt-s to enable it)

[mattirn]

It should work... I have modified Groovy REPL so that tailtip widgets are enabled https://github.com/mattirn/jline3/tree/widget-enable, see the last commit mattirn@c1a7b29. In my PC it works as expected.

[rnc]

It should work... I have modified Groovy REPL so that tailtip widgets are enabled https://github.com/mattirn/jline3/tree/widget-enable, see the last commit mattirn@c1a7b29. In my PC it works as expected.

Thanks for the reply!

I guess I must be missing something in my configuration. I am using jline via picocli (which brings in org.jline:jline:jar:3.15.0 ). Maybe that is affecting it / making a difference?

The code is https://github.com/rnc/bacon/blob/JLINE3/cli/src/main/java/org/jboss/pnc/bacon/cli/App.java#L156 pushed to branch JLINE3 and running via the produced shaded jar gives:

java -jar cli/target/bacon.jar
Exception in thread "main" java.lang.IllegalStateException: Widgets can only be called during a `readLine` call
        at org.jline.reader.impl.LineReaderImpl.callWidget(LineReaderImpl.java:832)
        at org.jline.builtins.Widgets.callWidget(Widgets.java:91)
        at org.jline.builtins.Widgets$TailTipWidgets.toggleKeyBindings(Widgets.java:1068)
        at org.jline.builtins.Widgets$TailTipWidgets.enable(Widgets.java:834)
        at org.jboss.pnc.bacon.cli.App.run(App.java:156)
        at org.jboss.pnc.bacon.cli.App.main(App.java:73)

[mattirn]

Yes, you are right! There is a bug in version 3.15.0 which has been fixed in 3.16.0, see commits

• fcac9694 Console example: fixed widgets enabling/disabling, step II
• 1aa0bda2 Console example: fixed widgets enabling/disabling

I'm afraid picocli-shell-jline3 requires some minor changes to use JLine version 3.16.0, see #551

[rnc]

@mattirn Ah ha, I was cross-checking the released versions and that was going to be my next guess after you said it should work. I think the appropriate thing to do would be enter a ticket for picocli. Thanks for your help!

I'll look to see if I can manage the dependency manually and update the code - I will read your referenced ticket tomorrow.

[rnc]

I've just given it a go and added

<dependency>
 <groupId>org.jline</groupId>
 <artifactId>jline-console</artifactId>
</dependency>

as an extra dependency and it works. Thanks!