Hallo Wagtail inline only

hallowagtailinlineonly.js

(function() {
  (function($) {
    return $.widget('IKS.inlineonly', {
      options: {
        uuid: '',
        editable: null,
        buttonCssClass: null
      },
      populateToolbar: function(toolbar) {
        var whitelist = [
          'halloformat', 'hallowagtaillink', 'hallowagtaildoclink'
        ];
        $(toolbar).children().filter(function() {
          var className = this.className.split(/\s+/)[0];
          return $.inArray(className, whitelist) == -1;
        }).remove();
      }
    });
  })(jQuery);
}).call(this);

wagtail_hooks.py

from django.utils.html import format_html, format_html_join
from django.conf import settings

from wagtail.wagtailcore import hooks

@hooks.register('insert_editor_js')
def editor_js():
    js_files = [
        'js/hallowagtailinlineonly.js',
    ]
    js_includes = format_html_join('\n', '<script src="{0}{1}"></script>',
        ((settings.STATIC_URL, filename) for filename in js_files)
    )
    return js_includes + format_html(
        """
        <script>
            registerHalloPlugin('inlineonly');
        </script>
        """
    )