[WIP] EZP-25137: As an editor, I want to be able to create and embed a Content "on the fly" in the RichText editor

[dpobel]

JIRA: https://jira.ez.no/browse/EZP-25137
Requires: ezsystems/ez-js-rest-client#78
Status: on hold

Description

This should provide a way for the user to create a Content item while using the UDW (so when filling a Relation(s) field, adding an embed element in the RichText editor, ...)

Feature status

This is kind of working but at the moment, it's not possible to choose the parent Location of the future Content item. There are also plenty of positioning bugs.

Remaining tasks:

• Fully test the contentCreated handler in the event parameter of the event trigger to run the Content Creator side view
• Allow to run the several UDW at the same time (and most likely several Content Creator side views and others side views), this implies dynamically handle the z-index of each side view container and make sure that the others side views appears on top of that
• Make sure the z-index of others parts of the UI are correct as well (RichText toolbar, loading animation, ...)
• Adapt the UI of the Create tab to the last version of the spec (display the newly created Content item)
• CSS

[StephaneDiot]

I'll use 9586054 on the PR about https://jira.ez.no/browse/EZP-26315 ( not open yet I'll updtate the link when open)