315 lines
8.6 KiB
JavaScript
315 lines
8.6 KiB
JavaScript
//= require jquery.simulate
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OSM.Query = function(map) {
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var queryButton = $(".control-query .control-button"),
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uninterestingTags = ['source', 'source_ref', 'source:ref', 'history', 'attribution', 'created_by', 'tiger:county', 'tiger:tlid', 'tiger:upload_uuid'],
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marker;
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var featureStyle = {
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color: "#FF6200",
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weight: 4,
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opacity: 1,
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fillOpacity: 0.5,
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clickable: false
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};
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queryButton.on("click", function (e) {
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e.preventDefault();
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e.stopPropagation();
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if (queryButton.hasClass("disabled")) return;
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if (queryButton.hasClass("active")) {
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disableQueryMode();
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OSM.router.route("/");
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} else {
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enableQueryMode();
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}
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}).on("disabled", function (e) {
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if (queryButton.hasClass("active")) {
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map.off("click", clickHandler);
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$(map.getContainer()).removeClass("query-active").addClass("query-disabled");
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$(this).tooltip("show");
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}
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}).on("enabled", function (e) {
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if (queryButton.hasClass("active")) {
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map.on("click", clickHandler);
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$(map.getContainer()).removeClass("query-disabled").addClass("query-active");
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$(this).tooltip("hide");
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}
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});
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$("#sidebar_content")
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.on("mouseover", ".query-results li.query-result", function () {
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var geometry = $(this).data("geometry")
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if (geometry) map.addLayer(geometry);
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$(this).addClass("selected");
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})
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.on("mouseout", ".query-results li.query-result", function () {
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var geometry = $(this).data("geometry")
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if (geometry) map.removeLayer(geometry);
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$(this).removeClass("selected");
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})
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.on("click", ".query-results li.query-result", function (e) {
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if (!$(e.target).is('a')) {
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$(this).find("a").simulate("click", e);
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}
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});
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function interestingFeature(feature, origin, radius) {
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if (feature.tags) {
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if (feature.type === "node" &&
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OSM.distance(origin, L.latLng(feature.lat, feature.lon)) > radius) {
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return false;
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}
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for (var key in feature.tags) {
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if (uninterestingTags.indexOf(key) < 0) {
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return true;
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}
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}
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}
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return false;
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}
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function featurePrefix(feature) {
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var tags = feature.tags;
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var prefix = "";
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if (tags.boundary === "administrative") {
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prefix = I18n.t("geocoder.search_osm_nominatim.admin_levels.level" + tags.admin_level)
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} else {
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var prefixes = I18n.t("geocoder.search_osm_nominatim.prefix");
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for (var key in tags) {
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var value = tags[key];
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if (prefixes[key]) {
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if (prefixes[key][value]) {
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return prefixes[key][value];
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} else {
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var first = value.substr(0, 1).toUpperCase(),
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rest = value.substr(1).replace(/_/g, " ");
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return first + rest;
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}
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}
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}
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}
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if (!prefix) {
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prefix = I18n.t("javascripts.query." + feature.type);
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}
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return prefix;
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}
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function featureName(feature) {
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var tags = feature.tags;
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if (tags["name"]) {
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return tags["name"];
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} else if (tags["ref"]) {
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return tags["ref"];
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} else if (tags["addr:housename"]) {
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return tags["addr:housename"];
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} else if (tags["addr:housenumber"] && tags["addr:street"]) {
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return tags["addr:housenumber"] + " " + tags["addr:street"];
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} else {
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return "#" + feature.id;
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}
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}
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function featureGeometry(feature, features) {
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var geometry;
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if (feature.type === "node") {
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geometry = L.circleMarker([feature.lat, feature.lon], featureStyle);
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} else if (feature.type === "way") {
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geometry = L.polyline(feature.nodes.map(function (node) {
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return features["node" + node].getLatLng();
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}), featureStyle);
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} else if (feature.type === "relation") {
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geometry = L.featureGroup();
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feature.members.forEach(function (member) {
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if (features[member.type + member.ref]) {
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geometry.addLayer(features[member.type + member.ref]);
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}
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});
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}
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if (geometry) {
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features[feature.type + feature.id] = geometry;
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}
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return geometry;
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}
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function runQuery(latlng, radius, query, $section) {
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var $ul = $section.find("ul");
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$ul.empty();
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$section.show();
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$section.find(".loader").oneTime(1000, "loading", function () {
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$(this).show();
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});
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if ($section.data("ajax")) {
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$section.data("ajax").abort();
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}
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$section.data("ajax", $.ajax({
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url: OSM.OVERPASS_URL,
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method: "POST",
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data: {
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data: "[timeout:5][out:json];" + query,
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},
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success: function(results) {
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var features = {};
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$section.find(".loader").stopTime("loading").hide();
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for (var i = 0; i < results.elements.length; i++) {
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var element = results.elements[i],
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geometry = featureGeometry(element, features);
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if (interestingFeature(element, latlng, radius)) {
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var $li = $("<li>")
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.addClass("query-result")
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.data("geometry", geometry)
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.appendTo($ul);
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var $p = $("<p>")
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.text(featurePrefix(element) + " ")
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.appendTo($li);
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$("<a>")
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.attr("href", "/" + element.type + "/" + element.id)
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.text(featureName(element))
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.appendTo($p);
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}
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}
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if ($ul.find("li").length == 0) {
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$("<li>")
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.text(I18n.t("javascripts.query.nothing_found"))
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.appendTo($ul);
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}
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},
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error: function(xhr, status, error) {
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$section.find(".loader").stopTime("loading").hide();
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$("<li>")
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.text(I18n.t("javascripts.query." + status, { server: OSM.OVERPASS_URL, error: error }))
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.appendTo($ul);
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}
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}));
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}
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/*
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* To find nearby objects we ask overpass for the union of the
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* following sets:
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*
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* node(around:<radius>,<lat>,lng>)
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* way(around:<radius>,<lat>,lng>)
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* node(w)
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* relation(around:<radius>,<lat>,lng>)
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*
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* to find enclosing objects we first find all the enclosing areas:
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*
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* is_in(<lat>,<lng>)->.a
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*
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* and then return the union of the following sets:
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*
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* relation(pivot.a)
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* way(pivot.a)
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* node(w)
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*
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* In order to avoid overly large responses we don't currently
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* attempt to complete any relations and instead just show those
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* ways and nodes which are returned for other reasons.
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*/
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function queryOverpass(lat, lng) {
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var latlng = L.latLng(lat, lng),
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radius = 10 * Math.pow(1.5, 19 - map.getZoom()),
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around = "around:" + radius + "," + lat + "," + lng,
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nodes = "node(" + around + ")",
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ways = "way(" + around + ");node(w)",
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relations = "relation(" + around + ")",
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nearby = "(" + nodes + ";" + ways + ";" + relations + ");out;",
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isin = "is_in(" + lat + "," + lng + ")->.a;(relation(pivot.a);way(pivot.a);node(w));out;";
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$("#sidebar_content .query-intro")
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.hide();
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if (marker) map.removeLayer(marker);
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marker = L.circle(latlng, radius, featureStyle).addTo(map);
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$(document).everyTime(75, "fadeQueryMarker", function (i) {
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if (i == 10) {
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map.removeLayer(marker);
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} else {
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marker.setStyle({
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opacity: 1 - i * 0.1,
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fillOpacity: 0.5 - i * 0.05
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});
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}
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}, 10);
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runQuery(latlng, radius, nearby, $("#query-nearby"));
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runQuery(latlng, radius, isin, $("#query-isin"));
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}
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function clickHandler(e) {
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var precision = OSM.zoomPrecision(map.getZoom()),
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lat = e.latlng.lat.toFixed(precision),
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lng = e.latlng.lng.toFixed(precision);
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OSM.router.route("/query?lat=" + lat + "&lon=" + lng);
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}
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function enableQueryMode() {
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queryButton.addClass("active");
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map.on("click", clickHandler);
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$(map.getContainer()).addClass("query-active");
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}
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function disableQueryMode() {
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if (marker) map.removeLayer(marker);
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$(map.getContainer()).removeClass("query-active").removeClass("query-disabled");
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map.off("click", clickHandler);
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queryButton.removeClass("active");
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}
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var page = {};
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page.pushstate = page.popstate = function(path) {
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OSM.loadSidebarContent(path, function () {
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page.load(path, true);
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});
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};
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page.load = function(path, noCentre) {
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var params = querystring.parse(path.substring(path.indexOf('?') + 1)),
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latlng = L.latLng(params.lat, params.lon);
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if (!window.location.hash &&
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(!noCentre || !map.getBounds().contains(latlng))) {
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OSM.router.withoutMoveListener(function () {
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map.setView(latlng, 15);
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});
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}
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queryOverpass(params.lat, params.lon);
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enableQueryMode();
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};
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page.unload = function() {
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disableQueryMode();
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};
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return page;
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};
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