gethue/ko/bindings/ko.chosen.js

Hue is an Open source SQL Query Editor for Databases/Warehouses

// Licensed to Cloudera, Inc. under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  Cloudera, Inc. 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 'jquery';
import * as ko from 'knockout';

ko.bindingHandlers.chosen = {
  init: function (element, valueAccessor, allBindings) {
    const $element = $(element);
    const options = ko.unwrap(valueAccessor());

    if (typeof options === 'object') {
      $element.chosen(options);
    } else {
      $element.chosen();
    }

    ['options', 'selectedOptions', 'value'].forEach(propName => {
      if (allBindings.has(propName)) {
        const prop = allBindings.get(propName);
        if (ko.isObservable(prop)) {
          prop.subscribe(() => {
            $element.trigger('chosen:updated');
          });
        }
      }
    });
  }
};