106 lines
2.8 KiB
JavaScript
106 lines
2.8 KiB
JavaScript
OSM.DirectionsEndpoint = function Endpoint(map, input, iconUrl, dragCallback, changeCallback) {
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var endpoint = {};
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endpoint.marker = L.marker([0, 0], {
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icon: L.icon({
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iconUrl: iconUrl,
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iconSize: [25, 41],
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iconAnchor: [12, 41],
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popupAnchor: [1, -34],
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shadowUrl: OSM.MARKER_SHADOW,
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shadowSize: [41, 41]
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}),
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draggable: true,
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autoPan: true
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});
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endpoint.enable = function () {
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endpoint.marker.on("drag dragend", markerDragListener);
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input.on("keydown", inputKeydownListener);
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input.on("change", inputChangeListener);
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};
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endpoint.disable = function () {
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endpoint.marker.off("drag dragend", markerDragListener);
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input.off("keydown", inputKeydownListener);
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input.off("change", inputChangeListener);
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if (endpoint.geocodeRequest) endpoint.geocodeRequest.abort();
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delete endpoint.geocodeRequest;
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map.removeLayer(endpoint.marker);
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};
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function markerDragListener(e) {
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var latlng = convertLatLngToZoomPrecision(e.target.getLatLng());
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setLatLng(latlng);
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setInputValueFromLatLng(latlng);
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endpoint.value = input.val();
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dragCallback(e.type === "drag");
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}
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function inputKeydownListener() {
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input.removeClass("is-invalid");
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}
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function inputChangeListener(e) {
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// make text the same in both text boxes
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var value = e.target.value;
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endpoint.setValue(value);
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}
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endpoint.setValue = function (value, latlng) {
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endpoint.value = value;
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delete endpoint.latlng;
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input.removeClass("is-invalid");
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input.val(value);
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if (latlng) {
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setLatLng(latlng);
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setInputValueFromLatLng(latlng);
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changeCallback();
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} else if (endpoint.value) {
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getGeocode();
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}
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};
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function getGeocode() {
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var viewbox = map.getBounds().toBBoxString(); // <sw lon>,<sw lat>,<ne lon>,<ne lat>
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var geocodeUrl = OSM.NOMINATIM_URL + "search?q=" + encodeURIComponent(endpoint.value) + "&format=json&viewbox=" + viewbox;
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if (endpoint.geocodeRequest) endpoint.geocodeRequest.abort();
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endpoint.geocodeRequest = $.getJSON(geocodeUrl, function (json) {
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delete endpoint.geocodeRequest;
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if (json.length === 0) {
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input.addClass("is-invalid");
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alert(I18n.t("javascripts.directions.errors.no_place", { place: endpoint.value }));
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return;
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}
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setLatLng(L.latLng(json[0]));
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input.val(json[0].display_name);
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changeCallback();
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});
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}
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function setLatLng(ll) {
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endpoint.latlng = ll;
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endpoint.marker
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.setLatLng(ll)
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.addTo(map);
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}
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function setInputValueFromLatLng(latlng) {
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input.val(latlng.lat + ", " + latlng.lng);
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}
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function convertLatLngToZoomPrecision(latlng) {
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var precision = OSM.zoomPrecision(map.getZoom());
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return L.latLng(latlng.lat.toFixed(precision), latlng.lng.toFixed(precision));
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}
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return endpoint;
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};
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