elastic_textarea.js

/*
 * Licensed to Elasticsearch B.V. under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch B.V. licenses this file to you under
 * the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import _ from 'lodash';
import { uiModules } from './modules';
const NL_RE = /\n/g;
const events = 'keydown keypress keyup change';

uiModules.get('kibana')
  .directive('elasticTextarea', function () {
    return {
      restrict: 'A',
      link: function ($scope, $el) {

        function resize() {
          $el.attr('rows', _.size($el.val().match(NL_RE)) + 1);
        }

        $el.on(events, resize);
        $scope.$evalAsync(resize);
        $scope.$on('$destroy', function () {
          $el.off(events, resize);
        });

      }
    };

  });