owl-map/static/js/map.js

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JavaScript
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"use strict";
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var options = {};
if (start_lat || start_lng) {
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start_lat = start_lat.toFixed(5);
start_lng = start_lng.toFixed(5);
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options = {
center: [start_lat, start_lng],
zoom: zoom,
};
}
var map = L.map("map", options);
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var items = {};
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var wikidata_items = {};
var osm_objects = {};
var wikidata_loaded = false;
var osm_loaded = false;
var loading = document.getElementById("loading");
var load_text = document.getElementById("load-text");
var isa_card = document.getElementById("isa-card");
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var link_status_card = document.getElementById("link-status-card");
var detail_card = document.getElementById("detail-card");
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var detail = document.getElementById("detail");
var detail_header = document.getElementById("detail-header");
var search_and_isa = document.getElementById("search-and-isa");
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var detail_qid;
var candidates = document.getElementById("candidates");
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var checkbox_list = document.getElementsByClassName("isa-checkbox");
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var linked = document.getElementById("linked");
var not_linked = document.getElementById("not-linked");
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var nearby_lookup = {};
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var isa_labels = {};
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var items_url = "/api/1/items";
var osm_objects_url = "/api/1/osm";
var missing_url = "/api/1/missing";
var hover_circles = [];
var selected_circles = [];
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var candidate_outline;
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var isa_count = {};
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map.zoomControl.setPosition("topright");
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function build_map_path() {
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var zoom = map.getZoom();
var c = map.getCenter();
var lat = c.lat.toFixed(5);
var lng = c.lng.toFixed(5);
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var path = `/map/${zoom}/${lat}/${lng}`;
if (detail_qid !== undefined) {
path += `?item=${detail_qid}`;
}
return path;
}
function update_map_path() {
history.replaceState(null, null, build_map_path());
}
function qid_from_url() {
const queryString = window.location.search;
const urlParams = new URLSearchParams(queryString);
return urlParams.get("item") || undefined;
}
map.on("moveend", update_map_path);
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var blueMarker = L.ExtraMarkers.icon({
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icon: "fa-wikidata",
markerColor: "blue",
shape: "circle",
prefix: "fa",
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});
var greenMarker = L.ExtraMarkers.icon({
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icon: "fa-wikidata",
markerColor: "green",
shape: "circle",
prefix: "fa",
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});
var redMarker = L.ExtraMarkers.icon({
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icon: "fa-wikidata",
markerColor: "red",
shape: "circle",
prefix: "fa",
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});
var osmYellowMarker = L.ExtraMarkers.icon({
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icon: "fa-map",
markerColor: "yellow",
shape: "square",
prefix: "fa",
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});
var osmOrangeMarker = L.ExtraMarkers.icon({
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icon: "fa-map",
markerColor: "orange",
shape: "square",
prefix: "fa",
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});
if (!start_lat || !start_lng) {
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map.fitBounds([
[49.85, -10.5],
[58.75, 1.9],
]);
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}
var osm = L.tileLayer("https://tile.openstreetmap.org/{z}/{x}/{y}.png", {
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maxZoom: 19,
});
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osm.addTo(map);
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function load_complete() {
loading.classList.add("d-none");
load_text.classList.remove("d-none");
detail_card.classList.add("d-none");
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if(detail_qid) {
open_detail(detail_qid);
}
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}
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function add_to_feature_group(qid, thing) {
if (items[qid] === undefined) items[qid] = {};
if (items[qid].group === undefined) items[qid].group = L.featureGroup();
var group = items[qid].group;
thing.addTo(group);
return group;
}
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function update_wikidata(check_for_missing = true) {
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if (
Object.keys(wikidata_items).length === 0 ||
Object.keys(osm_objects).length === 0
) {
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if (wikidata_loaded && osm_loaded) load_complete();
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return;
}
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if (check_for_missing) {
var missing_qids = [];
for (const qid in osm_objects) {
var item = wikidata_items[qid];
if (!item) missing_qids.push(qid);
}
if (missing_qids.length) {
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var c = map.getCenter();
var params = {
qids: missing_qids.join(","),
lat: c.lat.toFixed(5),
lon: c.lng.toFixed(5),
};
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axios.get(missing_url, { params: params }).then((response) => {
response.data.isa_count.forEach((isa) => {
isa_labels[isa.qid] = isa.label;
if (isa_count[isa.qid] === undefined) {
isa_count[isa.qid] = isa;
} else {
isa_count[isa.qid].count += 1;
}
});
process_wikidata_items(response.data.items);
update_wikidata(false);
});
}
}
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var linked_count = 0;
var not_linked_count = 0;
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for (const qid in osm_objects) {
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var osm_list = osm_objects[qid];
var item = wikidata_items[qid];
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osm_list.forEach((osm) => {
osm.marker.setIcon(item ? osmYellowMarker : osmOrangeMarker);
});
if (!item) continue;
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item.markers.forEach((marker_data) => {
marker_data.marker.setIcon(greenMarker);
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if (!items[qid].lines) items[qid].lines = [];
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osm_list.forEach((osm) => {
var path = [osm.centroid, marker_data];
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var polyline = L.polyline(path, { color: "green" });
add_to_feature_group(qid, polyline);
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items[qid].lines.push(polyline);
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});
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});
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}
for (const qid in wikidata_items) {
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if (osm_objects[qid]) {
linked_count += 1;
continue;
}
not_linked_count += 1;
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var item = wikidata_items[qid];
item.markers.forEach((marker_data) => {
marker_data.marker.setIcon(redMarker);
});
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}
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document.getElementById("linked-count").textContent = linked_count;
document.getElementById("not-linked-count").textContent = not_linked_count;
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var isa_count_values = Object.values(isa_count);
set_isa_list(isa_count_values);
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link_status_card.classList.remove("d-none");
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load_complete();
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}
function isa_only(e) {
e.preventDefault();
var this_id = e.target.parentNode.childNodes[0].id;
for (const checkbox of checkbox_list) {
checkbox.checked = checkbox.id == this_id;
}
checkbox_change();
}
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function show_all_isa(e) {
e.preventDefault();
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for (const checkbox of checkbox_list) {
checkbox.checked = true;
}
checkbox_change();
}
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function checkbox_change() {
var ticked = [];
for (const checkbox of checkbox_list) {
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if (checkbox.checked) ticked.push(checkbox.id.substr(4));
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}
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for (const qid in items) {
var item = items[qid];
if (item.group === undefined) continue;
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if (item.isa_list === undefined) continue;
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var show_item = true;
if (osm_objects[qid] && !linked.checked) {
show_item = false;
}
if (!osm_objects[qid] && !not_linked.checked) {
show_item = false;
}
if (show_item) {
const item_isa_list = item.isa_list;
const intersection = ticked.filter((isa_qid) =>
item_isa_list.includes(isa_qid)
);
if (intersection.length == 0) {
show_item = false;
}
}
if (show_item) {
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item.group.addTo(map);
} else {
item.group.removeFrom(map);
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}
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}
}
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function link_status_change() {
if (!linked.checked && !not_linked.checked) {
for (const qid in items) {
var item = items[qid];
item.group.removeFrom(map);
}
}
}
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function set_isa_list(isa_count_list) {
isa_count_list.sort((a, b) => b.count - a.count);
isa_card.classList.remove("d-none");
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var isa_list = document.getElementById("isa-list");
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isa_list.innerHTML = "";
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isa_count_list.forEach((isa) => {
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var isa_id = `isa-${isa.qid}`;
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var e = document.createElement("div");
e.setAttribute("class", "isa-item");
var checkbox = document.createElement("input");
checkbox.setAttribute("type", "checkbox");
checkbox.setAttribute("checked", "checked");
checkbox.setAttribute("id", isa_id);
checkbox.setAttribute("class", "isa-checkbox");
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checkbox.onchange = checkbox_change;
e.appendChild(checkbox);
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e.appendChild(document.createTextNode(" "));
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var label = document.createElement("label");
label.setAttribute("for", isa_id);
var label_text = document.createTextNode(
` ${isa.label} (${isa.qid}): ${isa.count} `
);
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label.appendChild(label_text);
e.appendChild(label);
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e.appendChild(document.createTextNode(" "));
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var only = document.createElement("a");
only.setAttribute("href", "#");
var only_text = document.createTextNode("only");
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only.appendChild(only_text);
only.onclick = isa_only;
e.appendChild(only);
isa_list.appendChild(e);
});
}
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function build_item_detail(item, tag_or_key_list) {
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var wd_url = "https://www.wikidata.org/wiki/" + item.qid;
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var popup = '<div class="row"><div class="col">'
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var has_image = item.image_list && item.image_list.length;
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popup += "<strong>Wikidata item</strong><br>";
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popup += `<a href="${wd_url}" target="_blank">${item.label}</a> (${item.qid})`;
if (item.description) {
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popup += `<br><strong>description</strong><br>${item.description}`;
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}
if (item.isa_list && item.isa_list.length) {
popup += "<br><strong>item type</strong>";
for (const [index, isa_qid] of item.isa_list.entries()) {
var isa_url = "https://www.wikidata.org/wiki/" + isa_qid;
var isa_label = isa_labels[isa_qid];
popup += `<br><a href="${isa_url}" target="_blank">${isa_label}</a> (${isa_qid})`;
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}
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}
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if (item.street_address && item.street_address.length) {
popup += "<br><strong>street address</strong>";
popup += `<br>${item.street_address[0]}`;
}
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if (tag_or_key_list && tag_or_key_list.length) {
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if (!has_image) {
popup += '</div><div class="col">'
} else {
popup += "<br>"
}
popup += "<strong>OSM tags/keys to search for</strong>";
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for (const v of tag_or_key_list) {
popup += `<br>${v}`;
}
}
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if (has_image) {
popup += '</div><div class="col">'
popup += `<img class="w-100" src="/commons/${item.image_list[0]}">`;
}
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popup += "</div></div>";
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return popup;
}
function mouseover(item) {
if (item.outline) {
item.outline.setStyle({ fillOpacity: 0.2, weight: 6 });
}
if (item.lines) {
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item.lines.forEach((line) => {
line.setStyle({ weight: 6 });
});
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}
item.markers.forEach((marker) => {
var coords = marker.getLatLng();
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var circle = L.circle(coords, { radius: 20 }).addTo(map);
hover_circles.push(circle);
});
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}
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function mouseout(item) {
if (item.outline) {
item.outline.setStyle({ fillOpacity: 0, weight: 3 });
}
if (item.lines) {
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item.lines.forEach((line) => {
line.setStyle({ weight: 3 });
});
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}
hover_circles.forEach((circle) => {
circle.removeFrom(map);
});
hover_circles = [];
}
function close_item_details() {
selected_circles.forEach((circle) => {
circle.removeFrom(map);
});
selected_circles = [];
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detail_header.innerHTML = "";
detail.innerHTML = "";
candidates.innerHTML = "";
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update_map_path();
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if (candidate_outline) {
candidate_outline.removeFrom(map);
candidate_outline = undefined;
}
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}
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function show_outline(osm) {
if (candidate_outline !== undefined) {
candidate_outline.removeFrom(map);
}
var mapStyle = { fillOpacity: 0, color: "red" };
var geojson = L.geoJSON(null, { style: mapStyle });
geojson.addData(osm.geojson);
geojson.addTo(map);
candidate_outline = geojson;
}
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function open_detail(qid) {
var item = items[qid];
if (item.wikidata === undefined) {
console.log("not found:", qid);
return;
}
search_and_isa.classList.add("d-none");
detail_card.classList.remove("d-none");
detail_card.classList.add("bg-highlight");
close_item_details();
detail_qid = qid;
item.markers.forEach((marker) => {
var coords = marker.getLatLng();
var circle = L.circle(coords, { radius: 20, color: "orange" }).addTo(map);
selected_circles.push(circle);
});
window.setTimeout(function () {
detail_card.classList.remove("bg-highlight");
}, 1000);
update_map_path();
var item_label = `${item.wikidata.label} (${item.wikidata.qid})`;
detail_header.innerHTML = "";
detail_header.append(document.createTextNode(item_label));
var item_tags_url = `/api/1/item/${qid}/tags`;
axios.get(item_tags_url).then((response) => {
var tag_or_key_list = response.data.tag_or_key_list;
if (response.data.qid != detail_qid) {
tag_or_key_list = []; // different QID
}
var item_detail = build_item_detail(item.wikidata, tag_or_key_list);
detail.innerHTML = item_detail;
if (tag_or_key_list.length == 0) return;
var item_osm_candidates_url = `/api/1/item/${qid}/candidates`;
var bounds = map.getBounds();
var params = { bounds: bounds.toBBoxString() };
axios
.get(item_osm_candidates_url, { params: params })
.then((response) => {
if (response.data.qid != detail_qid) return; // different QID
var nearby = response.data.nearby;
if (!nearby.length) return;
var osm_html = "<strong>Possible OSM matches</strong><br>";
osm_html += '<table class="table table-sm table-hover">'
osm_html += '<tbody>'
for (const osm of nearby) {
var candidate_id = osm.identifier.replace("/", "_");
osm_html += `<tr class="osm-candidate" id="${candidate_id}"><td class="text-end text-nowrap">${osm.distance.toFixed(0)}m `;
osm_html += `<a href="https://www.openstreetmap.org/${osm.identifier}" target="_blank">`;
osm_html += '<i class="fa fa-map-o"></i></a>';
osm_html += "</td><td>";
nearby_lookup[candidate_id] = osm;
if (osm.name) {
osm_html += osm.name + " ";
}
if (!osm.presets.length && !osm.name) {
osm_html += "no name ";
}
osm_html += osm.presets.map(function(p) {
var wiki_url = `http://wiki.openstreetmap.org/wiki/${p.tag_or_key}`;
return `<a href="${wiki_url}" class="osm-wiki-link" target="_blank">${p.name} <i class="fa fa-external-link"></i></a>`;
}).join(", ");
if (osm.address_list && osm.address_list.length) {
if (osm.address_list.length == 1) {
osm_html += "<br>address node: " + osm.address_list[0];
} else {
osm_html += "<br>address nodes: " + osm.address_list.join("; ")
}
}
osm_html += "</td></tr>";
}
osm_html += "</tbody></table>"
candidates.innerHTML = osm_html;
var span_list = document.getElementsByClassName("osm-candidate");
for (const osm_span of span_list) {
osm_span.onmouseenter = function (e) {
show_outline(nearby_lookup[e.target.id]);
};
}
});
});
}
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function mouse_events(marker, qid) {
items[qid] ||= {};
var item = items[qid];
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marker.on("mouseover", function () {
mouseover(item);
});
marker.on("mouseout", function () {
mouseout(item);
});
marker.on("click", function () {
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detail_qid = qid;
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open_detail(qid);
});
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item.markers ||= [];
item.markers.push(marker);
}
function add_wikidata_marker(item, marker_data) {
var icon = blueMarker;
var qid = item.qid;
var label = `${item.label} (${item.qid})`;
var marker = L.marker(marker_data, { icon: icon });
mouse_events(marker, qid);
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var group = add_to_feature_group(item.qid, marker);
group.addTo(map);
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marker_data.marker = marker;
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}
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function process_wikidata_items(load_items) {
load_items.forEach((item) => {
var qid = item.qid;
if (item.qid in wikidata_items) return;
item.markers.forEach((marker_data) =>
add_wikidata_marker(item, marker_data)
);
items[qid].wikidata = item;
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wikidata_items[item.qid] = item;
if (items[qid] === undefined) items[qid] = {};
items[qid].isa_list = item.isa_list;
});
}
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function load_wikidata_items() {
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var checkbox_list = document.getElementsByClassName("isa-checkbox");
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for (const checkbox of checkbox_list) checkbox.checked = true;
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linked.checked = true;
not_linked.checked = true;
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checkbox_change();
close_item_details();
search_and_isa.classList.remove("d-none");
detail_card.classList.add("d-none");
loading.classList.remove("d-none");
load_text.classList.add("d-none");
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var bounds = map.getBounds();
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var params = { bounds: bounds.toBBoxString() };
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axios.get(items_url, { params: params }).then((response) => {
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response.data.isa_count.forEach((isa) => {
isa_count[isa.qid] = isa;
isa_labels[isa.qid] = isa.label;
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});
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process_wikidata_items(response.data.items);
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wikidata_loaded = true;
isa_card.classList.remove("d-none");
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link_status_card.classList.remove("d-none");
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update_wikidata();
});
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axios.get(osm_objects_url, { params: params }).then((response) => {
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console.log(`${response.data.duration} seconds`);
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response.data.objects.forEach((osm) => {
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var qid = osm.wikidata;
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if (osm_objects[qid] === undefined) osm_objects[qid] = [];
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osm_objects[qid].push(osm);
var icon = osmYellowMarker;
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var marker = L.marker(osm.centroid, { title: osm.name, icon: icon });
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osm.marker = marker;
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var wd_url = "https://www.wikidata.org/wiki/" + qid;
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var popup = `
<p>
${osm.name}:
<a href="${osm.url}" target="_blank">${osm.identifier}</a>
<br>
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Wikidata tag: <a href="${wd_url}" target="_blank">${qid}</a>
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</p>`;
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mouse_events(marker, qid);
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var group = add_to_feature_group(qid, marker);
group.addTo(map);
items[qid].markers ||= [];
items[qid].markers.push(marker);
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if (osm.type != "node" && osm.geojson) {
var mapStyle = { fillOpacity: 0 };
var geojson = L.geoJSON(null, { style: mapStyle });
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geojson.addData(osm.geojson);
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add_to_feature_group(qid, geojson);
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items[qid].outline = geojson;
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}
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});
osm_loaded = true;
update_wikidata();
});
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}
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document.getElementById("search-form").onsubmit = function (e) {
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e.preventDefault();
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var search_text = document.getElementById("search-text").value.trim();
if (!search_text) return;
var params = { q: search_text };
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var search_url = "/api/1/search";
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var search_results = document.getElementById("search-results");
axios.get(search_url, { params: params }).then((response) => {
search_results.innerHTML = "";
response.data.hits.forEach((hit) => {
var e = document.createElement("div");
var category = document.createTextNode(hit.category + " ");
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e.appendChild(category);
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var a = document.createElement("a");
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var lat = parseFloat(hit.lat).toFixed(5);
var lon = parseFloat(hit.lon).toFixed(5);
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a.setAttribute("href", `/map/15/${lat}/${lon}`);
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var link_text = document.createTextNode(hit.name);
a.appendChild(link_text);
e.appendChild(a);
search_results.appendChild(e);
});
});
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};
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function close_detail() {
search_and_isa.classList.remove("d-none");
detail_card.classList.add("d-none");
close_item_details();
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detail_qid = undefined;
update_map_path();
}
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document.getElementById("load-btn").onclick = load_wikidata_items;
document.getElementById("show-all-isa").onclick = show_all_isa;
document.getElementById("close-detail").onclick = close_detail;
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linked.onchange = checkbox_change;
not_linked.onchange = checkbox_change;
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detail_qid = qid_from_url();
update_map_path();
if(detail_qid) {
load_wikidata_items();
}