gethue/ko/bindings/ko.publish.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 * as ko from 'knockout';

import huePubSub from '../../utils/huePubSub';

ko.bindingHandlers.publish = {
  init: function (element, valueAccessor, allBindings, viewModel, bindingContext) {
    ko.bindingHandlers.click.init(
      element,
      () => {
        return function () {
          const topicDetails = ko.unwrap(valueAccessor());
          if (typeof topicDetails === 'string') {
            huePubSub.publish(topicDetails);
          } else if (typeof topicDetails === 'object') {
            const keys = Object.keys(topicDetails);
            if (keys.length === 1) {
              huePubSub.publish(keys[0], topicDetails[keys[0]]);
            }
          }
        };
      },
      allBindings,
      viewModel,
      bindingContext
    );
  }
};