I have created a flexible layout that would allow admins to add one or two columns (by choice) of text in an element. This works great when text is being added in the Page.
1. If the user selects ‘1 Column’, I would like the text editor to take up the full width of the area. There doesn’t seem to be a section in the Custom Field settings to set this. The only one setting ‘Wrapper Attributes’ affects both choices (if the admin chooses 1 Column or 2 Column). You can see the attachments (custom-field-setting.PNG, full-width-1-column.PNG).
I hope this helps 🙂
I little bit beyond by knowledge, but I’ll give it a go.