145 lines
4 KiB
JavaScript
145 lines
4 KiB
JavaScript
OSM.initializeDataLayer = function (map) {
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var loadedBounds;
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var dataLayer = map.dataLayer;
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dataLayer.setStyle({
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way: {
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weight: 3,
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color: "#000000",
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opacity: 0.4
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},
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area: {
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weight: 3,
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color: "#ff0000"
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},
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node: {
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color: "#00ff00"
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}
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});
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dataLayer.isWayArea = function () {
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return false;
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};
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dataLayer.on("click", function (e) {
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onSelect(e.layer);
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});
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dataLayer.on("add", function () {
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map.fire("overlayadd", { layer: this });
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map.on("moveend", updateData);
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updateData();
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});
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dataLayer.on("remove", function () {
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map.off("moveend", updateData);
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$("#browse_status").empty();
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map.fire("overlayremove", { layer: this });
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});
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function updateData() {
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var bounds = map.getBounds();
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if (!loadedBounds || !loadedBounds.contains(bounds)) {
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getData();
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}
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}
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function displayFeatureWarning(count, limit, add, cancel) {
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$("#browse_status").html(
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$("<div class='p-3'>").append(
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$("<div class='d-flex'>").append(
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$("<h2 class='flex-grow-1 text-break'>")
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.text(I18n.t("browse.start_rjs.load_data")),
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$("<div>").append(
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$("<button type='button' class='btn-close'>")
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.attr("aria-label", I18n.t("javascripts.close"))
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.click(cancel))),
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$("<p class='alert alert-warning'>")
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.text(I18n.t("browse.start_rjs.feature_warning", { num_features: count, max_features: limit })),
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$("<input type='submit' class='btn btn-primary d-block mx-auto'>")
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.val(I18n.t("browse.start_rjs.load_data"))
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.click(add)));
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}
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function displayLoadError(message, close) {
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$("#browse_status").html(
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$("<div class='p-3'>").append(
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$("<div class='d-flex'>").append(
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$("<h2 class='flex-grow-1 text-break'>")
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.text(I18n.t("browse.start_rjs.load_data")),
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$("<div>").append(
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$("<button type='button' class='btn-close'>")
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.attr("aria-label", I18n.t("javascripts.close"))
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.click(close))),
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$("<div>").append(
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$("<div class='d-flex'>").append(
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$("<p class='alert alert-warning'>")
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.text(I18n.t("browse.start_rjs.feature_error", { message: message }))))));
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}
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var dataLoader;
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function getData() {
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var bounds = map.getBounds();
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var url = "/api/" + OSM.API_VERSION + "/map?bbox=" + bounds.toBBoxString();
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/*
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* Modern browsers are quite happy showing far more than 100 features in
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* the data browser, so increase the limit to 4000 by default.
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*/
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const maxFeatures = 4000;
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if (dataLoader) dataLoader.abort();
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dataLoader = $.ajax({
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url: url,
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success: function (xml) {
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dataLayer.clearLayers();
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var features = dataLayer.buildFeatures(xml);
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function addFeatures() {
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$("#browse_status").empty();
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dataLayer.addData(features);
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loadedBounds = bounds;
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}
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function cancelAddFeatures() {
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$("#browse_status").empty();
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}
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if (features.length < maxFeatures) {
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addFeatures();
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} else {
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displayFeatureWarning(features.length, maxFeatures, addFeatures, cancelAddFeatures);
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}
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if (map._objectLayer) {
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map._objectLayer.bringToFront();
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}
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dataLoader = null;
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},
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error: function (XMLHttpRequest, textStatus) {
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dataLoader = null;
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if (textStatus === "abort") { return; }
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function closeError() {
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$("#browse_status").empty();
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}
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if (XMLHttpRequest.status === 400 && XMLHttpRequest.responseText) {
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displayLoadError(XMLHttpRequest.responseText, closeError);
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} else if (XMLHttpRequest.statusText) {
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displayLoadError(XMLHttpRequest.statusText, closeError);
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} else {
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displayLoadError(String(XMLHttpRequest.status), closeError);
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}
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}
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});
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}
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function onSelect(layer) {
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OSM.router.route("/" + layer.feature.type + "/" + layer.feature.id);
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}
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};
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