Plugin remains "enabled" even when a widget editables allowedContent is set not to allow any markup

[dnijssen]

Hello,

I have written a custom CKEditor widget, that has defined a couple editables (within the widget), each editable has its own "allowedContent", because I want to prevent users of widget to use any other markup such as youtube videos etc. in my custom widget.
All other plugins, styles get greyed out by the allowedContent settings on my widget, but the youtube plugin stays active.. I think the youtube plugin needs to have a "requiredContent" setting along with the "allowedContent" in the plugin.js.

http://docs.ckeditor.com/#!/guide/plugin_sdk_integration_with_acf
CKEDITOR.feature.requiredContent – defines a minimal set of content types that must be enabled to let the feature work.

I don't want to disable or remove the youtube plugin, as it is indeed very useful, I just want users to prevent using it within my widget ;)

Kind regards,
Dennis