[IDEA] Advanced Search Filter Tab Should Allow Multi-line Input

[pmario]

This request is related to: Add support for comments within filters #6847

• We do allow multi-line filter expressions for quite some time already.
• We want to allow comments in multi-line filter expressions.

But we do not allow multi-line inputs in the AdvacedSearch -> Filter tab at the moment.

So as a user I would like to be able to test multi-line filter expressions in the AdvancedSearch Filter tab.

[pmario]

I did some tests. For this to work we need a new disabled parameter for the $keyboard-widget. Similar to the $button-widget disabled parameter.

At the moment the "keyboard-driven-input" up, down and enter key messes with the navigation in the textarea. There seems to be no other way to send them a "disable" signal