1 //= require jquery-simulate/jquery.simulate
3 OSM.History = function (map) {
7 .on("click", ".changeset_more a", loadMoreChangesets)
8 .on("mouseover", "[data-changeset]", function () {
9 highlightChangeset($(this).data("changeset").id);
11 .on("mouseout", "[data-changeset]", function () {
12 unHighlightChangeset($(this).data("changeset").id);
15 const group = L.featureGroup()
16 .on("mouseover", function (e) {
17 highlightChangeset(e.layer.id);
19 .on("mouseout", function (e) {
20 unHighlightChangeset(e.layer.id);
22 .on("click", function (e) {
23 clickChangeset(e.layer.id, e.originalEvent);
26 group.getLayerId = function (layer) {
30 let changesetIntersectionObserver;
32 function disableChangesetIntersectionObserver() {
33 if (changesetIntersectionObserver) {
34 changesetIntersectionObserver.disconnect();
35 changesetIntersectionObserver = null;
39 function enableChangesetIntersectionObserver() {
40 disableChangesetIntersectionObserver();
41 if (!window.IntersectionObserver) return;
43 let ignoreIntersectionEvents = true;
45 changesetIntersectionObserver = new IntersectionObserver((entries) => {
46 if (ignoreIntersectionEvents) {
47 ignoreIntersectionEvents = false;
51 let closestTargetToTop,
52 closestDistanceToTop = Infinity,
53 closestTargetToBottom,
54 closestDistanceToBottom = Infinity;
56 for (const entry of entries) {
57 if (entry.isIntersecting) continue;
59 const distanceToTop = entry.rootBounds.top - entry.boundingClientRect.bottom;
60 const distanceToBottom = entry.boundingClientRect.top - entry.rootBounds.bottom;
61 if (distanceToTop >= 0 && distanceToTop < closestDistanceToTop) {
62 closestDistanceToTop = distanceToTop;
63 closestTargetToTop = entry.target;
65 if (distanceToBottom >= 0 && distanceToBottom <= closestDistanceToBottom) {
66 closestDistanceToBottom = distanceToBottom;
67 closestTargetToBottom = entry.target;
71 if (closestTargetToTop && closestDistanceToTop < closestDistanceToBottom) {
72 const id = $(closestTargetToTop).data("changeset")?.id;
74 OSM.router.replace(location.pathname + "?" + new URLSearchParams({ before: id }) + location.hash);
76 } else if (closestTargetToBottom) {
77 const id = $(closestTargetToBottom).data("changeset")?.id;
79 OSM.router.replace(location.pathname + "?" + new URLSearchParams({ after: id }) + location.hash);
82 }, { root: $("#sidebar")[0] });
84 $("#sidebar_content .changesets ol").children().each(function () {
85 changesetIntersectionObserver.observe(this);
89 function highlightChangeset(id) {
90 const layer = group.getLayer(id);
91 if (layer) layer.setStyle({ fillOpacity: 0.3, color: "#FF6600", weight: 3 });
92 $("#changeset_" + id).addClass("selected");
95 function unHighlightChangeset(id) {
96 const layer = group.getLayer(id);
97 if (layer) layer.setStyle({ fillOpacity: 0, color: "#FF9500", weight: 2 });
98 $("#changeset_" + id).removeClass("selected");
101 function clickChangeset(id, e) {
102 $("#changeset_" + id).find("a.changeset_id").simulate("click", e);
105 function displayFirstChangesets(html) {
106 $("#sidebar_content .changesets").html(html);
108 if (location.pathname === "/history") {
109 setPaginationMapHashes();
113 function displayMoreChangesets(div, html) {
114 const sidebar = $("#sidebar")[0];
115 const previousScrollHeightMinusTop = sidebar.scrollHeight - sidebar.scrollTop;
117 const oldList = $("#sidebar_content .changesets ol");
119 div.replaceWith(html);
121 const prevNewList = oldList.prevAll("ol");
122 if (prevNewList.length) {
123 prevNewList.next(".changeset_more").remove();
124 prevNewList.children().prependTo(oldList);
125 prevNewList.remove();
127 // restore scroll position only if prepending
128 sidebar.scrollTop = sidebar.scrollHeight - previousScrollHeightMinusTop;
131 const nextNewList = oldList.nextAll("ol");
132 if (nextNewList.length) {
133 nextNewList.prev(".changeset_more").remove();
134 nextNewList.children().appendTo(oldList);
135 nextNewList.remove();
138 if (location.pathname === "/history") {
139 setPaginationMapHashes();
143 function setPaginationMapHashes() {
144 $("#sidebar .pagination a").each(function () {
145 $(this).prop("hash", OSM.formatHash({
146 center: map.getCenter(),
152 function loadFirstChangesets() {
153 const data = new URLSearchParams();
155 disableChangesetIntersectionObserver();
157 if (location.pathname === "/history") {
158 setBboxFetchData(data);
159 const feedLink = $("link[type=\"application/atom+xml\"]"),
160 feedHref = feedLink.attr("href").split("?")[0];
161 feedLink.attr("href", feedHref + "?" + data);
164 setListFetchData(data, location);
166 fetch(location.pathname + "?" + data)
167 .then(response => response.text())
168 .then(function (html) {
169 displayFirstChangesets(html);
170 enableChangesetIntersectionObserver();
172 if (data.has("before")) {
173 const [firstItem] = $("#sidebar_content .changesets ol").children().first();
174 firstItem?.scrollIntoView();
175 } else if (data.has("after")) {
176 const [lastItem] = $("#sidebar_content .changesets ol").children().last();
177 lastItem?.scrollIntoView(false);
179 const [sidebar] = $("#sidebar");
180 sidebar.scrollTop = 0;
187 function loadMoreChangesets(e) {
191 const div = $(this).parents(".changeset_more");
193 div.find(".pagination").addClass("invisible");
194 div.find("[hidden]").prop("hidden", false);
196 const data = new URLSearchParams();
198 if (location.pathname === "/history") {
199 setBboxFetchData(data);
202 const url = new URL($(this).attr("href"), location);
203 setListFetchData(data, url);
205 fetch(url.pathname + "?" + data)
206 .then(response => response.text())
207 .then(function (html) {
208 displayMoreChangesets(div, html);
209 enableChangesetIntersectionObserver();
215 function setBboxFetchData(data) {
216 const crs = map.options.crs;
217 const sw = map.getBounds().getSouthWest();
218 const ne = map.getBounds().getNorthEast();
219 const swClamped = crs.unproject(crs.project(sw));
220 const neClamped = crs.unproject(crs.project(ne));
222 if (sw.lat >= swClamped.lat || ne.lat <= neClamped.lat || ne.lng - sw.lng < 360) {
223 data.set("bbox", map.getBounds().wrap().toBBoxString());
227 function setListFetchData(data, url) {
228 const params = new URLSearchParams(url.search);
230 data.set("list", "1");
232 if (params.has("before")) {
233 data.set("before", params.get("before"));
235 if (params.has("after")) {
236 data.set("after", params.get("after"));
240 function reloadChangesetsBecauseOfMapMovement() {
241 OSM.router.replace("/history" + window.location.hash);
242 loadFirstChangesets();
247 function updateBounds() {
250 for (const changeset of changesets) {
251 const bottomLeft = map.project(L.latLng(changeset.bbox.minlat, changeset.bbox.minlon)),
252 topRight = map.project(L.latLng(changeset.bbox.maxlat, changeset.bbox.maxlon)),
253 width = topRight.x - bottomLeft.x,
254 height = bottomLeft.y - topRight.y,
255 minSize = 20; // Min width/height of changeset in pixels
257 if (width < minSize) {
258 bottomLeft.x -= ((minSize - width) / 2);
259 topRight.x += ((minSize - width) / 2);
262 if (height < minSize) {
263 bottomLeft.y += ((minSize - height) / 2);
264 topRight.y -= ((minSize - height) / 2);
267 changeset.bounds = L.latLngBounds(map.unproject(bottomLeft),
268 map.unproject(topRight));
271 changesets.sort(function (a, b) {
272 return b.bounds.getSize() - a.bounds.getSize();
275 for (const changeset of changesets) {
276 const rect = L.rectangle(changeset.bounds,
277 { weight: 2, color: "#FF9500", opacity: 1, fillColor: "#FFFFAF", fillOpacity: 0 });
278 rect.id = changeset.id;
283 function updateMap() {
284 changesets = $("[data-changeset]").map(function (index, element) {
285 return $(element).data("changeset");
286 }).get().filter(function (changeset) {
287 return changeset.bbox;
292 if (location.pathname !== "/history") {
293 const bounds = group.getBounds();
294 if (bounds.isValid()) map.fitBounds(bounds);
298 page.pushstate = page.popstate = function (path) {
299 OSM.loadSidebarContent(path, page.load);
302 page.load = function () {
305 if (location.pathname === "/history") {
306 map.on("moveend", reloadChangesetsBecauseOfMapMovement);
309 map.on("zoomend", updateBounds);
311 loadFirstChangesets();
314 page.unload = function () {
315 map.removeLayer(group);
316 map.off("moveend", reloadChangesetsBecauseOfMapMovement);
317 map.off("zoomend", updateBounds);
318 disableChangesetIntersectionObserver();