Increase search radius at lower zooms

[rails.git] / app / assets / javascripts / index / query.js

diff --git a/app/assets/javascripts/index/query.js b/app/assets/javascripts/index/query.js
index 8d04efd5f7a4bb19af540d5de470dc848f3f9233..096f7cca67358ff9e390a15ccd38ae2e145db26e 100644 (file)
--- a/app/assets/javascripts/index/query.js
+++ b/app/assets/javascripts/index/query.js
@@ -1,3 +1,5 @@
+//= require jquery.simulate
+
 OSM.Query = function(map) {
   var queryButton = $(".control-query .control-button"),
     uninterestingTags = ['source', 'source_ref', 'source:ref', 'history', 'attribution', 'created_by', 'tiger:county', 'tiger:tlid', 'tiger:upload_uuid'],
@@ -17,19 +19,29 @@ OSM.Query = function(map) {
   });
 
   $("#sidebar_content")
-    .on("mouseover", ".query-results li", function () {
+    .on("mouseover", ".query-results li.query-result", function () {
       var geometry = $(this).data("geometry")
       if (geometry) map.addLayer(geometry);
       $(this).addClass("selected");
     })
-    .on("mouseout", ".query-results li", function () {
+    .on("mouseout", ".query-results li.query-result", function () {
       var geometry = $(this).data("geometry")
       if (geometry) map.removeLayer(geometry);
       $(this).removeClass("selected");
+    })
+    .on("click", ".query-results li.query-result", function (e) {
+      if (!$(e.target).is('a')) {
+        $(this).find("a").simulate("click", e);
+      }
     });
 
-  function interestingFeature(feature) {
+  function interestingFeature(feature, origin, radius) {
     if (feature.tags) {
+      if (feature.type === "node" &&
+          OSM.distance(origin, L.latLng(feature.lat, feature.lon)) > radius) {
+        return false;
+      }
+
       for (var key in feature.tags) {
         if (uninterestingTags.indexOf(key) < 0) {
           return true;
@@ -118,7 +130,7 @@ OSM.Query = function(map) {
     return geometry;
   }
 
-  function runQuery(query, $section) {
+  function runQuery(latlng, radius, query, $section) {
     var $ul = $section.find("ul");
 
     $ul.empty();
@@ -148,12 +160,12 @@ OSM.Query = function(map) {
         for (var i = 0; i < results.elements.length; i++) {
           var element = results.elements[i];
 
-          if (interestingFeature(element)) {
+          if (interestingFeature(element, latlng, radius)) {
             var $li = $("<li>")
+              .addClass("query-result")
               .data("geometry", featureGeometry(element, nodes))
               .appendTo($ul);
             var $p = $("<p>")
-              .addClass("inner12 search_results_entry clearfix")
               .text(featurePrefix(element) + " ")
               .appendTo($li);
 
@@ -163,13 +175,20 @@ OSM.Query = function(map) {
               .appendTo($p);
           }
         }
+
+        if ($ul.find("li").length == 0) {
+          $("<li>")
+            .text(I18n.t("javascripts.query.nothing_found"))
+            .appendTo($ul);
+        }
       }
     });
   }
 
   function queryOverpass(lat, lng) {
     var latlng = L.latLng(lat, lng),
-      around = "around:10.0," + lat + "," + lng,
+      radius = 10 * Math.pow(1.5, 19 - map.getZoom()),
+      around = "around:" + radius + "," + lat + "," + lng,
       features = "(node(" + around + ");way(" + around + ");relation(" + around + "))",
       nearby = "((" + features + ";way(bn));node(w));out;",
       isin = "(is_in(" + lat + "," + lng + ");>);out;";
@@ -177,11 +196,8 @@ OSM.Query = function(map) {
     $("#sidebar_content .query-intro")
       .hide();
 
-    if (marker) {
-      marker.setLatLng(latlng).addTo(map);
-    } else {
-      marker = L.circle(latlng, 10, { clickable: false }).addTo(map);
-    }
+    if (marker) map.removeLayer(marker);
+    marker = L.circle(latlng, radius, { clickable: false }).addTo(map);
 
     $(document).everyTime(75, "fadeQueryMarker", function (i) {
       if (i == 10) {
@@ -194,8 +210,8 @@ OSM.Query = function(map) {
       }
     }, 10);
 
-    runQuery(nearby, $("#query-nearby"));
-    runQuery(isin, $("#query-isin"));
+    runQuery(latlng, radius, nearby, $("#query-nearby"));
+    runQuery(latlng, radius, isin, $("#query-isin"));
   }
 
   function clickHandler(e) {