gethue/ko/bindings/ko.truncatedText.js

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

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// or more contributor license agreements.  See the NOTICE file
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// 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
//
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// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// limitations under the License.

import * as ko from 'knockout';

ko.bindingHandlers.truncatedText = {
  update: function (element, valueAccessor, allBindingsAccessor) {
    const text = ko.isObservable(valueAccessor())
      ? ko.utils.unwrapObservable(valueAccessor())
      : valueAccessor();
    const length = ko.utils.unwrapObservable(allBindingsAccessor().maxLength) || 20;
    let truncated = '';
    if (typeof text !== 'undefined' && text !== null) {
      truncated = text.length > length ? text.substring(0, length) + '...' : text;
    }
    ko.bindingHandlers.text.update(element, () => {
      return truncated;
    });
  }
};