demarches-normaliennes/app/javascript/components/MapEditor/index.js
2020-05-14 14:28:54 +02:00

219 lines
6 KiB
JavaScript

import React, { useState, useRef, useEffect } from 'react';
import PropTypes from 'prop-types';
import mapboxgl from 'mapbox-gl';
import ReactMapboxGl, { GeoJSONLayer, ZoomControl } from 'react-mapbox-gl';
import DrawControl from 'react-mapbox-gl-draw';
import SwitchMapStyle from './SwitchMapStyle';
import SearchInput from './SearchInput';
import { getJSON, ajax } from '@utils';
import { gpx } from '@tmcw/togeojson/dist/togeojson.es.js';
import ortho from './styles/ortho.json';
import vector from './styles/vector.json';
import { polygonCadastresFill, polygonCadastresLine } from './utils';
import '@mapbox/mapbox-gl-draw/dist/mapbox-gl-draw.css';
const Map = ReactMapboxGl({});
function filterFeatureCollection(featureCollection, source) {
return {
type: 'FeatureCollection',
features: featureCollection.features.filter(
(feature) => feature.properties.source === source
)
};
}
function noop() {}
function MapEditor({ featureCollection, url, preview }) {
const drawControl = useRef(null);
const [style, setStyle] = useState('ortho');
const [coords, setCoords] = useState([1.7, 46.9]);
const [zoom, setZoom] = useState([5]);
const [currentMap, setCurrentMap] = useState({});
const [bbox, setBbox] = useState(featureCollection.bbox);
const mapStyle = style === 'ortho' ? ortho : vector;
const cadastresFeatureCollection = filterFeatureCollection(
featureCollection,
'cadastre'
);
function updateFeaturesList(features) {
const cadastres = features.find(
({ geometry }) => geometry.type === 'Polygon'
);
ajax({ url, type: 'get', data: cadastres ? 'cadastres=update' : '' });
}
function setFeatureId(lid, feature) {
const draw = drawControl.current.draw;
draw.setFeatureProperty(lid, 'id', feature.properties.id);
}
async function onDrawCreate({ features }) {
for (const feature of features) {
const data = await getJSON(url, { feature }, 'post');
setFeatureId(feature.id, data.feature);
}
updateFeaturesList(features);
}
async function onDrawUpdate({ features }) {
for (const feature of features) {
let { id } = feature.properties;
await getJSON(`${url}/${id}`, { feature }, 'patch');
}
updateFeaturesList(features);
}
async function onDrawDelete({ features }) {
for (const feature of features) {
const { id } = feature.properties;
await getJSON(`${url}/${id}`, null, 'delete');
}
updateFeaturesList(features);
}
const onMapLoad = (map) => {
setCurrentMap(map);
drawControl.current.draw.set(
filterFeatureCollection(featureCollection, 'selection_utilisateur')
);
};
const onCadastresUpdate = (evt) => {
if (currentMap) {
currentMap
.getSource('cadastres-layer')
.setData(
filterFeatureCollection(evt.detail.featureCollection, 'cadastre')
);
}
};
const onGpxImport = (e) => {
let reader = new FileReader();
reader.readAsText(e.target.files[0], 'UTF-8');
reader.onload = async (event) => {
const featureCollection = gpx(
new DOMParser().parseFromString(event.target.result, 'text/xml')
);
const resultFeatureCollection = await getJSON(
`${url}/import`,
featureCollection,
'post'
);
drawControl.current.draw.set(
filterFeatureCollection(
resultFeatureCollection,
'selection_utilisateur'
)
);
updateFeaturesList(resultFeatureCollection.features);
setBbox(resultFeatureCollection.bbox);
};
};
useEffect(() => {
addEventListener('cadastres:update', onCadastresUpdate);
return () => removeEventListener('cadastres:update', onCadastresUpdate);
});
if (!mapboxgl.supported()) {
return (
<p>
Nous ne pouvons pas afficher notre éditeur de carte car il est
imcompatible avec votre navigateur. Nous vous conseillons de le mettre à
jour ou utiliser les dernières versions de Chrome, Firefox ou Safari
</p>
);
}
return (
<>
<div className="file-import" style={{ marginBottom: '20px' }}>
<div>
<p style={{ fontWeight: 'bolder', marginBottom: '10px' }}>
Importer un fichier GPX
</p>
</div>
<div>
<input type="file" accept=".gpx" onChange={onGpxImport} />
</div>
</div>
<div
style={{
marginBottom: '62px'
}}
>
<SearchInput
getCoords={(searchTerm) => {
setCoords(searchTerm);
setZoom([17]);
}}
/>
</div>
<Map
onStyleLoad={(map) => onMapLoad(map)}
fitBounds={bbox}
fitBoundsOptions={{ padding: 100 }}
center={coords}
zoom={zoom}
style={mapStyle}
containerStyle={{
height: '500px'
}}
>
<GeoJSONLayer
id="cadastres-layer"
data={cadastresFeatureCollection}
fillPaint={polygonCadastresFill}
linePaint={polygonCadastresLine}
/>
<DrawControl
ref={drawControl}
onDrawCreate={preview ? noop : onDrawCreate}
onDrawUpdate={preview ? noop : onDrawUpdate}
onDrawDelete={preview ? noop : onDrawDelete}
displayControlsDefault={false}
controls={{
point: true,
line_string: true,
polygon: true,
trash: true
}}
/>
<div
className="style-switch"
style={{
position: 'absolute',
bottom: 0,
left: 0
}}
onClick={() =>
style === 'ortho' ? setStyle('vector') : setStyle('ortho')
}
>
<SwitchMapStyle isVector={style === 'vector' ? true : false} />
</div>
<ZoomControl />
</Map>
</>
);
}
MapEditor.propTypes = {
featureCollection: PropTypes.shape({
bbox: PropTypes.array,
features: PropTypes.array,
id: PropTypes.number
}),
url: PropTypes.string,
preview: PropTypes.bool
};
export default MapEditor;