Custom Craft plugins (Asset and Entry/URL selection) not working with Froala v3 and v4

[FreekVR]

As far as I've been able to reproduce the Craft plugins for the editor itself ,including media asset selection and selecting entries using the link plugin, have never been updated to support Froala v3 and v4 respectively, while this repo has been receiving major version bumps for that package.

It appears to still be using the v2 jQuery-based API, and is throwing errors in the browser console due to that API no longer functioning with the Froala version included with this Craft plugin.

See #20 and #19 for basic functionality breaking due to this problem.

[FreekVR]

I've been able to fix some things in my fork:
https://github.com/DN-Amsterdam/Craft-3-Froala-WYSIWYG/blob/develop/src/assets/field/dist/js/plugins/craft.js

However there are still some issues I've been unable to resolve using available documentation

• Image drag/drop is untested
• Icons in the link dialog could be a bit bigger
• Link popup select entry/asset buttons randomly fail on editor.popups.get('link.insert') being undefined
• When link popup does work, it always inserts a new link at the beginning of the text, rather than at the current cursor or replacing the selected text
• File insert is untested
• Z-index issue with some Froala popups appearing behind other matrix blocks in Craft