kinglozzer/htmleditorstylinghook

Allows adding CSS classes to HTMLEditorFields for styling hooks

HtmlEditorStylingHook

A module to allow easy adding of CSS classes to SilverStripe's HtmlEditorField instances., _(*1)

Simple example

HomePage.php, _(*2)

<?php

use SilverStripe\Forms\FieldList;

class HomePage extends Page
{
    public function getCMSFields() {
        $this->beforeUpdateCMSFields(function (FieldList $fields) {
            if ($content = $fields->dataFieldByName('Content')) {
                $content->setAttribute('data-mce-body-class', 'HomePage');
            }
        });

        return parent::getCMSFields();
    }
}

editor.css, _(*3)

.HomePage {
  background: #000;
  color: #fff;
}

Currently only set up for use in the CMS. To use with a different HtmlEditorConfig instance, simply copy the approach in _config.php, _(*4)