tchen-vuelayers/lib/ol-ext/feature.js

Web map Vue components with the power of OpenLayers

/**
 * VueLayers
 * Web map Vue components with the power of OpenLayers
 *
 * @package vuelayers
 * @author Vladimir Vershinin <ghettovoice@gmail.com>
 * @version 0.11.1
 * @license MIT
 * @copyright (c) 2017-2019, Vladimir Vershinin <ghettovoice@gmail.com>
 */
import Feature from 'ol/Feature';
import uuid from 'uuid/v4';
import Vue from 'vue';
import { isNumber, isPlainObject, isString } from '../util/minilo';

/**
 * Basic feature initialization
 * @param feature
 */

function initFeature(feature) {
  if (feature.getId() == null) {
    feature.setId(uuid());
  }

  return feature;
}
/**
 * @param {Object|Vue|Feature|string|number} feature
 * @return {string|number}
 * @throws {Error}
 */

function getFeatureId(feature) {
  var id;

  if (isPlainObject(feature) || feature instanceof Vue) {
    id = feature.id;
  } else if (feature instanceof Feature) {
    id = feature.getId();
  } else if (isString(feature) || isNumber(feature)) {
    id = feature;
  } else {
    throw new Error('Illegal feature format');
  }

  return id;
}

export { initFeature, getFeatureId };