X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/7c47cde474690f3d94f286b3477a1a31a1c51420..3d3b2b47964ec91ef1ab1946b7258a06665caced:/app/assets/javascripts/index/layers/data.js

diff --git a/app/assets/javascripts/index/layers/data.js b/app/assets/javascripts/index/layers/data.js
index f779bbb96..8925cc480 100644
--- a/app/assets/javascripts/index/layers/data.js
+++ b/app/assets/javascripts/index/layers/data.js
@@ -1,6 +1,6 @@
 OSM.initializeDataLayer = function (map) {
-  var loadedBounds;
-  var dataLayer = map.dataLayer;
+  let dataLoader, loadedBounds;
+  const dataLayer = map.dataLayer;
 
   dataLayer.setStyle({
     way: {
@@ -32,19 +32,21 @@ OSM.initializeDataLayer = function (map) {
   });
 
   dataLayer.on("remove", function () {
+    if (dataLoader) dataLoader.abort();
+    dataLoader = null;
     map.off("moveend", updateData);
     $("#browse_status").empty();
     map.fire("overlayremove", { layer: this });
   });
 
   function updateData() {
-    var bounds = map.getBounds();
+    const bounds = map.getBounds();
     if (!loadedBounds || !loadedBounds.contains(bounds)) {
       getData();
     }
   }
 
-  function displayFeatureWarning(count, limit, add, cancel) {
+  function displayFeatureWarning(num_features, add, cancel) {
     $("#browse_status").html(
       $("<div class='p-3'>").append(
         $("<div class='d-flex'>").append(
@@ -55,7 +57,7 @@ OSM.initializeDataLayer = function (map) {
               .attr("aria-label", I18n.t("javascripts.close"))
               .click(cancel))),
         $("<p class='alert alert-warning'>")
-          .text(I18n.t("browse.start_rjs.feature_warning", { num_features: count, max_features: limit })),
+          .text(I18n.t("browse.start_rjs.feature_warning", { num_features })),
         $("<input type='submit' class='btn btn-primary d-block mx-auto'>")
           .val(I18n.t("browse.start_rjs.load_data"))
           .click(add)));
@@ -71,41 +73,36 @@ OSM.initializeDataLayer = function (map) {
             $("<button type='button' class='btn-close'>")
               .attr("aria-label", I18n.t("javascripts.close"))
               .click(close))),
-        $("<div>").append(
-          $("<div class='d-flex'>").append(
-            $("<p class='alert alert-warning'>")
-              .text(I18n.t("browse.start_rjs.feature_error", { message: message }))))));
+        $("<p class='alert alert-warning'>")
+          .text(I18n.t("browse.start_rjs.feature_error", { message: message }))));
   }
 
-  var dataLoader;
-
   function getData() {
-    var bounds = map.getBounds();
-    var url = "/api/" + OSM.API_VERSION + "/map?bbox=" + bounds.toBBoxString();
+    const bounds = map.getBounds();
+    const url = "/api/" + OSM.API_VERSION + "/map.json?bbox=" + bounds.toBBoxString();
 
     /*
      * Modern browsers are quite happy showing far more than 100 features in
-     * the data browser, so increase the limit to 2000 by default, but keep
-     * it restricted to 500 for IE8 and 100 for older IEs.
+     * the data browser, so increase the limit to 4000.
      */
-    var maxFeatures = 2000;
-
-    /*@cc_on
-      if (navigator.appVersion < 8) {
-        maxFeatures = 100;
-      } else if (navigator.appVersion < 9) {
-        maxFeatures = 500;
-      }
-    @*/
+    const maxFeatures = 4000;
 
     if (dataLoader) dataLoader.abort();
 
-    dataLoader = $.ajax({
-      url: url,
-      success: function (xml) {
+    dataLoader = new AbortController();
+    fetch(url, { signal: dataLoader.signal })
+      .then(response => {
+        if (response.ok) return response.json();
+        const status = response.statusText || response.status;
+        if (response.status !== 400) throw new Error(status);
+        return response.text().then(text => {
+          throw new Error(text || status);
+        });
+      })
+      .then(function (data) {
         dataLayer.clearLayers();
 
-        var features = dataLayer.buildFeatures(xml);
+        const features = dataLayer.buildFeatures(data);
 
         function addFeatures() {
           $("#browse_status").empty();
@@ -120,32 +117,21 @@ OSM.initializeDataLayer = function (map) {
         if (features.length < maxFeatures) {
           addFeatures();
         } else {
-          displayFeatureWarning(features.length, maxFeatures, addFeatures, cancelAddFeatures);
+          displayFeatureWarning(features.length, addFeatures, cancelAddFeatures);
         }
 
         if (map._objectLayer) {
           map._objectLayer.bringToFront();
         }
+      })
+      .catch(function (error) {
+        if (error.name === "AbortError") return;
 
-        dataLoader = null;
-      },
-      error: function (XMLHttpRequest, textStatus) {
-        dataLoader = null;
-        if (textStatus === "abort") { return; }
-
-        function closeError() {
+        displayLoadError(error?.message, () => {
           $("#browse_status").empty();
-        }
-
-        if (XMLHttpRequest.status === 400 && XMLHttpRequest.responseText) {
-          displayLoadError(XMLHttpRequest.responseText, closeError);
-        } else if (XMLHttpRequest.statusText) {
-          displayLoadError(XMLHttpRequest.statusText, closeError);
-        } else {
-          displayLoadError(String(XMLHttpRequest.status), closeError);
-        }
-      }
-    });
+        });
+      })
+      .finally(() => dataLoader = null);
   }
 
   function onSelect(layer) {