2 let abortController = null;
3 const languagesToRequest = [...new Set(OSM.preferred_languages.map(l => l.toLowerCase()))];
4 const wikisToRequest = [...new Set([...OSM.preferred_languages, "en"].map(l => l.split("-")[0] + "wiki"))];
5 const isOfExpectedLanguage = ({ language }) => languagesToRequest[0].startsWith(language) || language === "mul";
7 $(document).on("click", "a[href='#versions-navigation-active-page-item']", function (e) {
8 scrollToActiveVersion();
9 $("#versions-navigation-active-page-item a.page-link").trigger("focus");
13 $(document).on("click", "button.wdt-preview", e => previewWikidataValue($(e.currentTarget)));
15 OSM.Element = type => function () {
17 let scrollStartObserver, scrollEndObserver;
19 page.pushstate = page.popstate = function (path, id, version) {
20 OSM.loadSidebarContent(path, function () {
21 initVersionsNavigation();
22 page._addObject(type, id, version);
23 abortController = new AbortController();
27 page.load = function (path, id, version) {
28 initVersionsNavigation();
29 page._addObject(type, id, version, true);
30 abortController = new AbortController();
33 page.unload = function () {
35 scrollStartObserver?.disconnect();
36 scrollStartObserver = null;
37 scrollEndObserver?.disconnect();
38 scrollEndObserver = null;
39 abortController?.abort();
42 page._addObject = function () {};
43 page._removeObject = function () {};
45 function initVersionsNavigation() {
46 scrollToActiveVersion();
48 const $scrollableList = $("#versions-navigation-list-middle");
49 const [scrollableFirstItem] = $scrollableList.children().first();
50 const [scrollableLastItem] = $scrollableList.children().last();
52 if (scrollableFirstItem) {
53 scrollStartObserver = createScrollObserver("#versions-navigation-list-start", "2px 0px");
54 scrollStartObserver.observe(scrollableFirstItem);
57 if (scrollableLastItem) {
58 scrollEndObserver = createScrollObserver("#versions-navigation-list-end", "-2px 0px");
59 scrollEndObserver.observe(scrollableLastItem);
63 function createScrollObserver(shadowTarget, shadowOffset) {
64 const threshold = 0.95;
65 return new IntersectionObserver(([entry]) => {
66 const floating = entry.intersectionRatio < threshold;
68 .css("box-shadow", floating ? `rgba(0, 0, 0, 0.075) ${shadowOffset} 2px` : "")
69 .css("z-index", floating ? "5" : ""); // floating z-index should be larger than z-index of Bootstrap's .page-link:focus, which is 3
76 OSM.MappedElement = type => function (map) {
77 const page = OSM.Element(type)(map);
79 page._addObject = function (type, id, version, center) {
80 const hashParams = OSM.parseHash();
81 map.addObject({ type: type, id: parseInt(id, 10), version: version && parseInt(version, 10) }, function (bounds) {
82 if (!hashParams.center && bounds.isValid() &&
83 (center || !map.getBounds().contains(bounds))) {
84 OSM.router.withoutMoveListener(function () {
85 map.fitBounds(bounds);
91 page._removeObject = function () {
98 function scrollToActiveVersion() {
99 const [scrollableList] = $("#versions-navigation-list-middle");
101 if (!scrollableList) return;
103 const [activeStartItem] = $("#versions-navigation-list-start #versions-navigation-active-page-item");
104 const [activeScrollableItem] = $("#versions-navigation-list-middle #versions-navigation-active-page-item");
106 if (activeStartItem) {
107 scrollableList.scrollLeft = 0;
108 } else if (activeScrollableItem) {
109 scrollableList.scrollLeft = Math.round(activeScrollableItem.offsetLeft - (scrollableList.offsetWidth / 2) + (activeScrollableItem.offsetWidth / 2));
111 scrollableList.scrollLeft = scrollableList.scrollWidth - scrollableList.offsetWidth;
115 function previewWikidataValue($btn) {
116 if (!OSM.WIKIDATA_API_URL) return;
117 const items = $btn.data("qids");
118 if (!items?.length) return;
119 $btn.prop("disabled", true);
120 fetch(OSM.WIKIDATA_API_URL + "?" + new URLSearchParams({
121 action: "wbgetentities",
124 ids: items.join("|"),
125 props: "labels|sitelinks/urls|claims|descriptions",
126 languages: languagesToRequest.join("|"),
128 sitefilter: wikisToRequest.join("|")
130 headers: { "Api-User-Agent": "OSM-TagPreview (https://github.com/openstreetmap/openstreetmap-website)" },
131 signal: abortController?.signal
133 .then(response => response.ok ? response.json() : Promise.reject(response))
134 .then(({ entities }) => {
135 if (!entities) return Promise.reject(entities);
140 .filter(qid => entities[qid])
141 .map(qid => getLocalizedResponse(entities[qid]))
142 .filter(data => data.label || data.icon || data.description || data.article)
143 .map(data => renderWikidataResponse(data, $btn.siblings(`a[href*="wikidata.org/entity/${data.qid}"]`)))
146 .catch(() => $btn.prop("disabled", false));
149 function getLocalizedResponse(entity) {
150 const rank = ({ rank }) => ({ preferred: 1, normal: 0, deprecated: -1 })[rank] ?? 0;
151 const toBestClaim = (out, claim) => (rank(claim) > rank(out)) ? claim : out;
152 const toFirstOf = (property) => (out, localization) => out ?? property[localization];
155 label: languagesToRequest.reduce(toFirstOf(entity.labels), null),
157 "P8972", // small logo or icon
158 "P154", // logo image
159 "P14" // traffic sign
160 ].reduce((out, prop) => out ?? entity.claims[prop]?.reduce(toBestClaim)?.mainsnak?.datavalue?.value, null),
161 description: languagesToRequest.reduce(toFirstOf(entity.descriptions), null),
162 article: wikisToRequest.reduce(toFirstOf(entity.sitelinks), null)
164 if (data.article) data.article.language = data.article.site.replace("wiki", "");
168 function renderWikidataResponse({ icon, label, article, description }, $link) {
169 const localeName = new Intl.DisplayNames(OSM.preferred_languages, { type: "language" });
170 const cell = $("<td>")
172 .addClass("bg-body-tertiary");
174 if (icon && OSM.WIKIMEDIA_COMMONS_URL) {
175 let src = OSM.WIKIMEDIA_COMMONS_URL + "Special:Redirect/file/" + encodeURIComponent(icon) + "?mobileaction=toggle_view_desktop";
176 if (!icon.endsWith(".svg")) src += "&width=128";
178 .attr("href", OSM.WIKIMEDIA_COMMONS_URL + "File:" + encodeURIComponent(icon) + `?uselang=${OSM.i18n.locale}`)
179 .append($("<img>").attr({ src, height: "32" }))
180 .addClass("float-end mb-1 ms-2")
184 const link = $link.clone()
188 if (!isOfExpectedLanguage(label)) {
189 link.attr("lang", label.language);
190 link.after($("<sup>").text(" " + localeName.of(label.language)));
194 const link = $("<a>")
195 .attr("href", article.url + `?uselang=${OSM.i18n.locale}`)
196 .text(label ? OSM.i18n.t("javascripts.element.wikipedia") : article.title)
203 if (!isOfExpectedLanguage(article)) {
204 link.attr("lang", article.language);
205 link.after($("<sup>").text(" " + localeName.of(article.language)));
209 const text = $("<div>")
210 .text(description.value)
214 if (!isOfExpectedLanguage(description)) {
215 text.attr("lang", description.language);
218 return $("<tr>").append(cell);