127 lines
4.9 KiB
JavaScript
127 lines
4.9 KiB
JavaScript
/* Copyright (c) 2017 Jean-Marc VIGLINO,
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released under the CeCILL-B license (French BSD license)
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(http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.txt).
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*/
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import {transform as ol_proj_transform} from 'ol/proj.js'
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import ol_control_SearchJSON from "./SearchJSON.js";
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/**
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* Search places using the Nominatim geocoder from the OpenStreetmap project.
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*
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* @constructor
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* @extends {ol.control.Search}
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* @fires select
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* @param {Object=} Control options.
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* @param {string} options.className control class name
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* @param {boolean | undefined} options.polygon To get output geometry of results (in geojson format), default false.
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* @param {Array<Number> | undefined} options.viewbox The preferred area to find search results. Any two corner points of the box are accepted in any order as long as they span a real box, default none.
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* @param {boolean | undefined} options.bounded Restrict the results to only items contained with the bounding box. Restricting the results to the bounding box also enables searching by amenity only. default false
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* @param {Element | string | undefined} options.target Specify a target if you want the control to be rendered outside of the map's viewport.
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* @param {string | undefined} options.title Title to use for the search button tooltip, default "Search"
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* @param {string | undefined} options.reverseTitle Title to use for the reverse geocoding button tooltip, default "Click on the map..."
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* @param {string | undefined} options.placeholder placeholder, default "Search..."
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* @param {number | undefined} options.typing a delay on each typing to start autocompletion (ms), default -1 (disabled). NB: default nominatim policy forbids auto-complete usage...
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* @param {integer | undefined} options.minLength minimum length to start searching, default 3
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* @param {integer | undefined} options.maxItems maximum number of items to display in the autocomplete list, default 10
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*
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* @param {string|undefined} options.url URL to Nominatim API, default "https://nominatim.openstreetmap.org/search"
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* @see {@link https://wiki.openstreetmap.org/wiki/Nominatim}
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*/
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var ol_control_SearchNominatim = class olcontrolSearchNominatim extends ol_control_SearchJSON {
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constructor(options) {
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options = options || {};
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options.className = options.className || 'nominatim';
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options.typing = options.typing || -1;
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options.url = options.url || 'https://nominatim.openstreetmap.org/search';
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options.copy = '<a href="http://www.openstreetmap.org/copyright" target="new">© OpenStreetMap contributors</a>';
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super(options);
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this.set('polygon', options.polygon);
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this.set('viewbox', options.viewbox);
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this.set('bounded', options.bounded);
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}
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/** Returns the text to be displayed in the menu
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* @param {ol.Feature} f the feature
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* @return {string} the text to be displayed in the index
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* @api
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*/
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getTitle(f) {
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var info = [];
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if (f.class)
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info.push(f.class);
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if (f.type)
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info.push(f.type);
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var title = f.display_name + (info.length ? "<i>" + info.join(' - ') + "</i>" : '');
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if (f.icon)
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title = "<img src='" + f.icon + "' />" + title;
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return (title);
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}
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/**
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* @param {string} s the search string
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* @return {Object} request data (as key:value)
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* @api
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*/
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requestData(s) {
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var data = {
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format: "json",
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addressdetails: 1,
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q: s,
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polygon_geojson: this.get('polygon') ? 1 : 0,
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bounded: this.get('bounded') ? 1 : 0,
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limit: this.get('maxItems')
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};
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if (this.get('viewbox'))
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data.viewbox = this.get('viewbox');
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return data;
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}
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/** A ligne has been clicked in the menu > dispatch event
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* @param {any} f the feature, as passed in the autocomplete
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* @api
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*/
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select(f) {
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var c = [Number(f.lon), Number(f.lat)];
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// Add coordinate to the event
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try {
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c = ol_proj_transform(c, 'EPSG:4326', this.getMap().getView().getProjection());
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} catch (e) { /* ok */ }
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this.dispatchEvent({ type: "select", search: f, coordinate: c });
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}
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/** Reverse geocode
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* @param {ol.coordinate} coord
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* @api
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*/
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reverseGeocode(coord, cback) {
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var lonlat = ol_proj_transform(coord, this.getMap().getView().getProjection(), 'EPSG:4326');
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this.ajax(
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this.get('url').replace('search', 'reverse'),
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{ lon: lonlat[0], lat: lonlat[1], format: 'json' },
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function (resp) {
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if (cback) {
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cback.call(this, [resp]);
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} else {
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if (resp && !resp.error) {
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this._handleSelect(resp, true);
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}
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//this.setInput('', true);
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}
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}.bind(this)
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);
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}
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/**
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* Handle server response to pass the features array to the display list
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* @param {any} response server response
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* @return {Array<any>} an array of feature
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* @api
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*/
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handleResponse(response) {
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return response.results || response;
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}
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/**/
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}
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export default ol_control_SearchNominatim
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