Editor.js

                    events : {
                        click: function () {
                            self.openMedia({
                                events: {
                                    onSubmit: function (Win, data) {
                                        UrlInput.value = data.url;
                                    }
                                }
                            });
                        }
                    }
                }).inject(UrlGroup);


                Button.getPrevious().setStyles({
                    'width': '85%',
                    'float': 'left'
                });
            };

            return ev;
        },

        /**
         * Turns the "relation" text-input to a select-input.
         * Returns as a boolean if the operation was successful.
         *
         * @see "quiqqer/ckeditor4#28"
         *
         * @param DialogDefinition
         *
         * @return boolean
         */
        $turnLinkRelInputToSelect: function (DialogDefinition) {
            var AdvancedTab = DialogDefinition.getContents("advanced");

            if (!AdvancedTab) {
                return false;
            }

            var RelationInput = AdvancedTab.get('advRel');

            if (!RelationInput) {
                return false;
            }

            if (RelationInput) {
                RelationInput.type  = 'select';
                RelationInput.items = [
                    ['alternate'],
                    ['author'],
                    ['bookmark'],
                    ['external'],
                    ['help'],
                    ['license'],
                    ['next'],
                    ['nofollow'],
                    ['noreferrer'],
                    ['noopener'],
                    ['prev'],
                    ['search'],
                    ['tag']
                ];
            }

            return true;
        }

    });
});