META: CKE5 integration

[dimaip]

How to test?

The default text editor is now configurable in Settings.yaml:

Neos:
  Neos:
    Ui:
      frontendConfiguration:
        defaultInlineEditor: 'ckeditor5'

TODO:

• wait for removeformat to be implemented in Consider implementing a v4-like remove format feature ckeditor/ckeditor5#908
• test, make sure it's rock solid, then release a major version making CKE5 the default editor
• ctrl+k should open link editor

[DrillSergeant]

@dimaip , could you change the handling of link-schemes in CKE5 integration? In CKE4 the possible schemes are mentioned in Packages/Application/Neos.Neos.Ui/packages/neos-ui-ckeditor-bindings/src/EditorToolbar/LinkIconButton.js in this construct:

const isUri = str =>
    str && Boolean(str.match('^(https?://|mailto:|tel:|#)'));

Sometimes (especially for intranet-projects) there are more url-schemes that should work (like "notes://" for lotus-notes documents). In CKE4 I cannot extend that because it's hardcoded and so it takes a lot of work to make linking to those schemed-links possible in RTE.
I would love if you could make this configurable via settings to add additional schemes so the CKE5-link editor accepts those custom schemes.
I just had a slack call with @kitsunet where he mentioned even some more ideas. Maybe you guys can talk/discuss. Remember, a simple solution for my usecase would help for many cases I think. I guess (hope) it's not so hard to check settings for some extra schemes.

[dimaip]

@DrillSergeant it's no longer needed, you can type in any kind of link you'd want (even relative) and click save.

[DrillSergeant]

@dimaip ah nice, thank you.

[danielkestler]

We can close this, can we?