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https://issues.apache.org/jira/browse/NIFI-4400?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16197466#comment-16197466
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Pierre Villard commented on NIFI-4400:
--------------------------------------

Hey [~yuri1969],

I was thinking about a dedicated advanced UI as we have one in UpdateAttribute 
or JoltTransformJSON processors (with an "Advanced UI" button below the 
properties list when configuring the processor). Such custom UI requires a 
specific package, examples:
- nifi-nar-bundles/nifi-update-attribute-bundle/nifi-update-attribute-ui
- nifi-nar-bundles/nifi-standard-bundle/nifi-jolt-transform-json-ui

> Advanced UI with code editor for scripted processors
> ----------------------------------------------------
>
>                 Key: NIFI-4400
>                 URL: https://issues.apache.org/jira/browse/NIFI-4400
>             Project: Apache NiFi
>          Issue Type: Improvement
>          Components: Core UI, Extensions
>            Reporter: Pierre Villard
>
> For the scripted processors it would nice to add an advanced UI with a "code 
> editor mode" that would provide some very useful features when typing code:
> - indentation
> - code highlighting
> - do not close the window when hitting enter
> etc
> The use of codemirror.js (as already done for EL auto-completion) sounds like 
> a good option.



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