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Search.js
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Search.js
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// The MIT License (MIT)
//
// Copyright (c) 2020-2021 Camptocamp SA
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
import GeoJSON from 'ol/format/GeoJSON';
// @ts-ignore
import Autocomplete from '@trevoreyre/autocomplete-js';
/**
* @typedef {Object} SearchOptions
* @property {HTMLElement} container
* @property {string} url
* @property {import("ol/source/Vector").default<unknown>} source
* @property {import("ol/View").default} view
*/
export default class Search {
/**
* @param {SearchOptions} options API options.
*/
constructor(options) {
this.format_ = new GeoJSON();
this.url_ = new URL(options.url);
this.source_ = options.source;
this.view_ = options.view;
const input = document.createElement('input');
input.className = 'api-search-input';
const ul = document.createElement('ul');
ul.className = 'api-search-results';
options.container.append(input, ul);
this.autocomplete_ = new Autocomplete(options.container, {
search: this.search_.bind(this),
getResultValue: this.getResultValue_.bind(this),
onSubmit: this.onSubmit_.bind(this),
});
}
/**
* @param {string} input
* @returns {Promise<import("geojson").Feature[]>}
*/
search_(input) {
return new Promise((resolve) => {
if (input.length >= 1) {
this.url_.searchParams.set('query', input);
fetch(this.url_.href)
.then((response) => response.json())
.then((collection) => collection.features)
.then((features) => resolve(features.filter(this.hasGeometry_)));
} else {
resolve([]);
}
});
}
/**
* @param {import("geojson").Feature} feature
* @returns {boolean}
*/
hasGeometry_(feature) {
return feature.geometry !== null;
}
/**
* @param {import("geojson").Feature} result
* @returns {string}
*/
getResultValue_(result) {
return result.properties.label;
}
/**
* @param {import("geojson").Feature} result
*/
onSubmit_(result) {
this.source_.clear();
const feature = /** @type {import('ol/Feature').default<import('ol/geom/Geometry').default>} */ (
this.format_.readFeature(result)
);
this.source_.addFeature(feature);
this.view_.fit(this.source_.getExtent());
}
}