[forge-issues] [JBoss JIRA] (FORGE-2548) Better error message what is wrong in a custom wizard for addon developers

[Claus Ibsen (JIRA)]

    [ https://issues.jboss.org/browse/FORGE-2548?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13138414#comment-13138414 ] 

Claus Ibsen commented on FORGE-2548:
------------------------------------

This is the command used in the example
https://github.com/fabric8io/fabric8/blob/master/forge/addons/camel/src/main/java/io/fabric8/forge/camel/commands/project/CamelAddEndpointXmlCommand.java

We hit some issues with forge in terms of building the wizard with dynamic number of steps, and the problem with its numerous callbacks to next / execute. So we had to be a bit creative to get it working
https://github.com/fabric8io/fabric8/blob/master/forge/addons/camel/src/main/java/io/fabric8/forge/camel/commands/project/CamelAddEndpointXmlCommand.java

> Better error message what is wrong in a custom wizard for addon developers
> --------------------------------------------------------------------------
>
>                 Key: FORGE-2548
>                 URL: https://issues.jboss.org/browse/FORGE-2548
>             Project: Forge
>          Issue Type: Enhancement
>    Affects Versions: 3.0.0.Alpha2
>            Reporter: Claus Ibsen
>
> When you develop custom addon's then various things can go wrong. And whether the command runs in CLI or IDEA or Eclipse then it works a little bit differently.
> I have a command wizard that fails with this cryptic index out of bounds exception. I finally found the stracktrace in idea.log file, as IDEA itself says nothing
> {code}
> 2015-12-08 10:45:34,976 [ 148775]  ERROR - llij.ide.plugins.PluginManager - Index: 2, Size: 2 
> java.lang.IndexOutOfBoundsException: Index: 2, Size: 2
> 	at java.util.ArrayList.rangeCheck(ArrayList.java:653)
> 	at java.util.ArrayList.get(ArrayList.java:429)
> 	at org.jboss.forge.addon.ui.impl.controller.WizardCommandControllerImpl.getCurrentEntry(WizardCommandControllerImpl.java:491)
> 	at org.jboss.forge.addon.ui.impl.controller.WizardCommandControllerImpl.getCurrentController(WizardCommandControllerImpl.java:502)
> 	at org.jboss.forge.addon.ui.impl.controller.WizardCommandControllerImpl.getInputs(WizardCommandControllerImpl.java:244)
> 	at org.jboss.forge.addon.ui.impl.controller.NoUIWizardControllerDecorator.getInputs(NoUIWizardControllerDecorator.java:189)
> {code}
> As all the stacktrace is purely in forge code, I cannot really see what I do wrong.
> Can you guys improve that part of the code that has the index out of bounds and do a better exception message that can help me what is the problem / as well other addon developers.



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