X-Git-Url: https://git.openstreetmap.org/rails.git/blobdiff_plain/6053ed41242448b286cae2b14126add52ea07fb5..2f9291ba5764fe104264ae7e3b6a361e11212e8b:/app/assets/javascripts/index/history.js

diff --git a/app/assets/javascripts/index/history.js b/app/assets/javascripts/index/history.js
index dfec793f6..38d0b249a 100644
--- a/app/assets/javascripts/index/history.js
+++ b/app/assets/javascripts/index/history.js
@@ -11,10 +11,15 @@ OSM.History = function(map) {
     .on("mouseout", "[data-changeset]", function () {
       unHighlightChangeset($(this).data("changeset").id);
     })
-    .on("click", "[data-changeset]", function (e) {
-      if (!$(e.target).is('a')) {
-        clickChangeset($(this).data("changeset").id, e);
-      }
+    .on("mousedown", "[data-changeset]", function () {
+      var moved = false;
+      $(this).one("click", function (e) {
+        if (!moved && !$(e.target).is('a')) {
+          clickChangeset($(this).data("changeset").id, e);
+        }
+      }).one("mousemove", function () {
+        moved = true;
+      });
     });
 
   var group = L.featureGroup()
@@ -33,12 +38,12 @@ OSM.History = function(map) {
   };
 
   function highlightChangeset(id) {
-    group.getLayer(id).setStyle({fillOpacity: 0.3});
+    group.getLayer(id).setStyle({fillOpacity: 0.3, color: "#FF6600", weight: 3});
     $("#changeset_" + id).addClass("selected");
   }
 
   function unHighlightChangeset(id) {
-    group.getLayer(id).setStyle({fillOpacity: 0});
+    group.getLayer(id).setStyle({fillOpacity: 0, color: "#FF9500", weight: 2});
     $("#changeset_" + id).removeClass("selected");
   }
 
@@ -57,7 +62,7 @@ OSM.History = function(map) {
       url: window.location.pathname,
       method: "GET",
       data: data,
-      success: function(html, status, xhr) {
+      success: function(html) {
         $('#sidebar_content .changesets').html(html);
         updateMap();
       }
@@ -84,19 +89,30 @@ OSM.History = function(map) {
     });
   }
 
-  function updateMap() {
+  var changesets = [];
+
+  function updateBounds() {
     group.clearLayers();
 
-    var changesets = [];
+    changesets.forEach(function(changeset) {
+      var bottomLeft = map.project(L.latLng(changeset.bbox.minlat, changeset.bbox.minlon)),
+          topRight = map.project(L.latLng(changeset.bbox.maxlat, changeset.bbox.maxlon)),
+          width = topRight.x - bottomLeft.x,
+          height = bottomLeft.y - topRight.y,
+          minSize = 20;  // Min width/height of changeset in pixels
+
+      if (width < minSize) {
+        bottomLeft.x -= ((minSize - width) / 2);
+        topRight.x += ((minSize - width) / 2);
+      }
 
-    $("[data-changeset]").each(function () {
-      var changeset = $(this).data('changeset');
-      if (changeset.bbox) {
-        changeset.bounds = L.latLngBounds(
-          [changeset.bbox.minlat, changeset.bbox.minlon],
-          [changeset.bbox.maxlat, changeset.bbox.maxlon]);
-        changesets.push(changeset);
+      if (height < minSize) {
+        bottomLeft.y += ((minSize - height) / 2);
+        topRight.y -= ((minSize - height) / 2);
       }
+
+      changeset.bounds = L.latLngBounds(map.unproject(bottomLeft),
+                                        map.unproject(topRight));
     });
 
     changesets.sort(function (a, b) {
@@ -106,10 +122,20 @@ OSM.History = function(map) {
     for (var i = 0; i < changesets.length; ++i) {
       var changeset = changesets[i],
         rect = L.rectangle(changeset.bounds,
-          {weight: 2, color: "#FF9500", opacity: 1, fillColor: "#FFFFBF", fillOpacity: 0});
+          {weight: 2, color: "#FF9500", opacity: 1, fillColor: "#FFFFAF", fillOpacity: 0});
       rect.id = changeset.id;
       rect.addTo(group);
     }
+  }
+
+  function updateMap() {
+    changesets = $("[data-changeset]").map(function (index,element) {
+      return $(element).data('changeset');
+    }).get().filter(function (changeset) {
+      return changeset.bbox;
+    });
+
+    updateBounds();
 
     if (window.location.pathname !== '/history') {
       var bounds = group.getBounds();
@@ -126,18 +152,17 @@ OSM.History = function(map) {
     map.addLayer(group);
 
     if (window.location.pathname === '/history') {
-      map.on("moveend", update)
+      map.on("moveend", update);
     }
 
+    map.on("zoomend", updateBounds);
+
     update();
   };
 
   page.unload = function() {
     map.removeLayer(group);
-
-    if (window.location.pathname === '/history') {
-      map.off("moveend", update)
-    }
+    map.off("moveend", update);
 
     $("#history_tab").removeClass("current");
   };