ol-ext/src/control/SearchDFCI.js

A set of cool extensions for OpenLayers (ol) in node modules structure

/*	Copyright (c) 2017 Jean-Marc VIGLINO, 
	released under the CeCILL-B license (French BSD license)
	(http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.txt).
*/

import ol_control_Search from './Search.js'
import {ol_coordinate_fromDFCI} from '../geom/DFCI.js'
import {ol_coordinate_toDFCI} from '../geom/DFCI.js'

/**
 * Search on DFCI grid.
 *
 * @constructor
 * @extends {ol_control_Search}
 * @fires select
 * @param {Object=} Control options. 
 *	@param {string} options.className control class name
 *	@param {Element | string | undefined} options.target Specify a target if you want the control to be rendered outside of the map's viewport.
 *	@param {string | undefined} options.label Text label to use for the search button, default "search"
 *	@param {string | undefined} options.placeholder placeholder, default "Search..."
 *	@param {number | undefined} options.typing a delay on each typing to start searching (ms), default 300.
 *	@param {integer | undefined} options.minLength minimum length to start searching, default 1
 *	@param {integer | undefined} options.maxItems maximum number of items to display in the autocomplete list, default 10
 *
 *	@param {string | undefined} options.property a property to display in the index, default 'name'.
 *	@param {function} options.getTitle a function that takes a feature and return the name to display in the index, default return the property 
 *	@param {function | undefined} options.getSearchString a function that take a feature and return a text to be used as search string, default geTitle() is used as search string
 */
var ol_control_SearchDFCI = class olcontrolSearchDFCI extends ol_control_Search {
  constructor(options) {
    options = options || {};
    options.className = options.className || 'dfci';
    options.placeholder = options.placeholder || 'Code DFCI';

    super(options);
  }
  /** Autocomplete function
  * @param {string} s search string
  * @return {Array<any>|false} an array of search solutions or false if the array is send with the cback argument (asnchronous)
  * @api
  */
  autocomplete(s) {
    s = s.toUpperCase();
    s = s.replace(/[^0-9,^A-H,^K-N]/g, '');
    if (s.length < 2) {
      this.setInput(s);
      return [];
    }

    var i;
    var proj = this.getMap().getView().getProjection();
    var result = [];
    var c = ol_coordinate_fromDFCI(s, proj);
    var level = Math.floor(s.length / 2) - 1;
    var dfci = ol_coordinate_toDFCI(c, level, proj);
    dfci = dfci.replace(/[^0-9,^A-H,^K-N]/g, '');
    // Valid DFCI ?
    if (!/NaN/.test(dfci) && dfci) {
      console.log('ok', dfci);
      this.setInput(dfci + s.substring(dfci.length, s.length));
      result.push({ coordinate: ol_coordinate_fromDFCI(dfci, proj), name: dfci });
      if (s.length === 5) {
        c = ol_coordinate_fromDFCI(s + 0, proj);
        dfci = (ol_coordinate_toDFCI(c, level + 1, proj)).substring(0, 5);
        for (i = 0; i < 10; i++) {
          result.push({ coordinate: ol_coordinate_fromDFCI(dfci + i, proj), name: dfci + i });
        }
      }
      if (level === 2) {
        for (i = 0; i < 6; i++) {
          result.push({ coordinate: ol_coordinate_fromDFCI(dfci + '.' + i, proj), name: dfci + '.' + i });
        }
      }
    }
    return result;
  }
}

export default ol_control_SearchDFCI