Basic framework for map UI

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

diff --git a/app/assets/javascripts/index/browse.js b/app/assets/javascripts/index/browse.js
index e75ae9dd2f79e75a9f5c80848acc40181fce06c3..8681d8f56658bba1bc91b930621fb8621711ca4a 100644 (file)
--- a/app/assets/javascripts/index/browse.js
+++ b/app/assets/javascripts/index/browse.js
@@ -3,460 +3,328 @@
 //= require templates/browse/feature_history
 
 $(document).ready(function () {
 //= require templates/browse/feature_history
 
 $(document).ready(function () {

-  $("#show_data").click(function (e) {
-    $.ajax({ url: $(this).attr('href'), success: function (sidebarHtml) {
-      startBrowse(sidebarHtml);
-    }});
-    e.preventDefault();
+  var browseBounds;
+  var layersById;
+  var selectedLayer;
+  var browseObjectList;
+  var areasHidden = false;
+  var locationFilter;
+
+  var dataLayer = new L.OSM.DataLayer(null, {
+    styles: {
+      way: {
+        weight: 3,
+        color: "#000000",
+        opacity: 0.4
+      },
+      area: {
+        weight: 3,
+        color: "#ff0000"
+      },
+      node: {
+        color: "#00ff00"
+      }
+    }

   });
 
   });
 

-  function startBrowse(sidebarHtml) {
-    var browseBoxControl;
-    var browseMode = "auto";
-    var browseBounds;
-    var browseFeatureList;
-    var browseActiveFeature;
-    var browseDataLayer;
-    var browseSelectControl;
-    var browseObjectList;
-    var areasHidden = false;
+  dataLayer.isWayArea = function () {
+    return !areasHidden && L.OSM.DataLayer.prototype.isWayArea.apply(this, arguments);
+  };

 
 

-    OpenLayers.Feature.Vector.style['default'].strokeWidth = 3;
-    OpenLayers.Feature.Vector.style['default'].cursor = "pointer";
+  dataLayer.on("click", function (e) {
+    onSelect(e.layer);
+  });

 
 

-    map.dataLayer.active = true;
+  if (OSM.STATUS != 'api_offline' && OSM.STATUS != 'database_offline') {
+//    map.layersControl.addOverlay(dataLayer, I18n.t("browse.start_rjs.data_layer_name"));
+  }

 
 

-    $("#sidebar_title").html(I18n.t('browse.start_rjs.data_frame_title'));
-    $("#sidebar_content").html(sidebarHtml);
+  map.on('layeradd', function (e) {
+    if (e.layer === dataLayer) {
+      $.ajax({ url: "/browse/start", success: function (sidebarHtml) {
+        startBrowse(sidebarHtml);
+      }});
+    }
+  });

 
 

-    openSidebar();
+  map.on('layerremove', function (e) {
+    if (e.layer === dataLayer) {
+      closeSidebar();
+    }
+  });

 
 

-    var vectors = new OpenLayers.Layer.Vector();
+  function startBrowse(sidebarHtml) {
+    locationFilter = new L.LocationFilter({
+      enableButton: false,
+      adjustButton: false
+    }).addTo(map);

 
 

-    browseBoxControl = new OpenLayers.Control.DrawFeature(vectors, OpenLayers.Handler.RegularPolygon, {
-      handlerOptions: {
-        sides: 4,
-        snapAngle: 90,
-        irregular: true,
-        persist: true
-      }
-    });
-    browseBoxControl.handler.callbacks.done = endDrag;
-    map.addControl(browseBoxControl);
+    locationFilter.on("change", getData);

 
 

-    map.events.register("moveend", map, updateData);
-    map.events.triggerEvent("moveend");
+    $("#sidebar_title").html(I18n.t('browse.start_rjs.data_frame_title'));
+    $("#sidebar_content").html(sidebarHtml);

 
 

-    $("#browse_select_view").click(useMap);
+    openSidebar();

 
 

-    $("#browse_select_box").click(startDrag);
+    map.on("moveend", updateData);
+    updateData();

 
 

-    $("#browse_hide_areas_box").html(I18n.t('browse.start_rjs.hide_areas'));
-    $("#browse_hide_areas_box").toggle(hideAreas, showAreas);
+    $("#browse_filter_toggle").click(toggleFilter);

 
 

-    function updateData() {
-      if (browseMode == "auto") {
-        if (map.getZoom() >= 15) {
-            useMap(false);
-        } else {
-            setStatus(I18n.t('browse.start_rjs.zoom_or_select'));
-        }
-      }
-    }
+    $("#browse_hide_areas_box").html(I18n.t('browse.start_rjs.hide_areas'));
+    $("#browse_hide_areas_box").click(toggleAreas);

 
     $("#sidebar").one("closed", function () {
 
     $("#sidebar").one("closed", function () {

-      if (map.dataLayer.active) {
-        map.dataLayer.active = false;
-
-        if (browseSelectControl) {
-          browseSelectControl.destroy();
-          browseSelectControl = null;
-        }
-
-        if (browseBoxControl) {
-          browseBoxControl.destroy();
-          browseBoxControl = null;
-        }
-
-        if (browseActiveFeature) {
-          browseActiveFeature.destroy();
-          browseActiveFeature = null;
-        }
+      map.removeLayer(dataLayer);
+      map.removeLayer(locationFilter);
+      map.off("moveend", updateData);
+      locationFilter.off("change", getData);
+    });
+  }

 
 

-        if (browseDataLayer) {
-          browseDataLayer.destroy();
-          browseDataLayer = null;
+  function updateData() {
+    if (!locationFilter.isEnabled()) {
+      if (map.getZoom() >= 15) {
+        var bounds = map.getBounds();
+        if (!browseBounds || !browseBounds.contains(bounds)) {
+          browseBounds = bounds;
+          getData();

         }
         }

-
-        map.dataLayer.setVisibility(false);
-        map.events.unregister("moveend", map, updateData);
+      } else {
+        setStatus(I18n.t('browse.start_rjs.zoom_or_select'));

       }
       }

-    });
-
-    function startDrag() {
-      $("#browse_select_box").html(I18n.t('browse.start_rjs.drag_a_box'));
-
-      browseBoxControl.activate();
-
-      return false;

     }
     }

+  }

 
 

-    function useMap(reload) {
-      var bounds = map.getExtent();
-      var projected = unproj(bounds);
-
-      if (!browseBounds || !browseBounds.containsBounds(projected)) {
-        var center = bounds.getCenterLonLat();
-        var tileWidth = bounds.getWidth() * 1.2;
-        var tileHeight = bounds.getHeight() * 1.2;
-        var tileBounds = new OpenLayers.Bounds(center.lon - (tileWidth / 2),
-                                               center.lat - (tileHeight / 2),
-                                               center.lon + (tileWidth / 2),
-                                               center.lat + (tileHeight / 2));
-
-        browseBounds = tileBounds;
-        getData(tileBounds, reload);
-
-        browseMode = "auto";
-
-        $("#browse_select_view").hide();
-      }
-
-      return false;
+  function toggleFilter() {
+    if (locationFilter.isEnabled()) {
+      $("#browse_filter_toggle").html(I18n.t('browse.start_rjs.manually_select'));
+      locationFilter.disable();
+    } else {
+      $("#browse_filter_toggle").html(I18n.t('browse.start_rjs.view_data'));
+      locationFilter.setBounds(map.getBounds().pad(-0.2));
+      locationFilter.enable();

     }
 
     }
 

-    function hideAreas() {
-      $("#browse_hide_areas_box").html(I18n.t('browse.start_rjs.show_areas'));
-
-      areasHidden = true;
-
-      useMap(true);
-    }
+    getData();
+  }

 
 

-    function showAreas() {
+  function toggleAreas() {
+    if (areasHidden) {

       $("#browse_hide_areas_box").html(I18n.t('browse.start_rjs.hide_areas'));
       $("#browse_hide_areas_box").html(I18n.t('browse.start_rjs.hide_areas'));

-

       areasHidden = false;
       areasHidden = false;

-
-      useMap(true);
+    } else {
+      $("#browse_hide_areas_box").html(I18n.t('browse.start_rjs.show_areas'));
+      areasHidden = true;

     }
 
     }
 

-    function endDrag(bbox) {
-      var bounds = bbox.getBounds();
-      var projected = unproj(bounds);
-
-      browseBoxControl.deactivate();
-      browseBounds = projected;
-      getData(bounds);
+    getData();
+  }

 
 

-      browseMode = "manual";
+  function displayFeatureWarning(count, limit, callback) {
+    clearStatus();

 
 

-      $("#browse_select_box").html(I18n.t('browse.start_rjs.manually_select'));
-      $("#browse_select_view").show();
-    }
+    var div = document.createElement("div");

 
 

-    function displayFeatureWarning(count, limit, callback) {
-      clearStatus();
+    var p = document.createElement("p");
+    p.appendChild(document.createTextNode(I18n.t("browse.start_rjs.loaded_an_area_with_num_features", { num_features: count, max_features: limit })));
+    div.appendChild(p);

 
 

-      var div = document.createElement("div");
+    var input = document.createElement("input");
+    input.type = "submit";
+    input.value = I18n.t('browse.start_rjs.load_data');
+    input.onclick = callback;
+    div.appendChild(input);

 
 

-      var p = document.createElement("p");
-      p.appendChild(document.createTextNode(I18n.t("browse.start_rjs.loaded_an_area_with_num_features", { num_features: count, max_features: limit })));
-      div.appendChild(p);
+    $("#browse_content").html("");
+    $("#browse_content").append(div);
+  }

 
 

-      var input = document.createElement("input");
-      input.type = "submit";
-      input.value = I18n.t('browse.start_rjs.load_data');
-      input.onclick = callback;
-      div.appendChild(input);
+  function getData() {
+    var bounds = locationFilter.isEnabled() ? locationFilter.getBounds() : map.getBounds();
+    var size = bounds.getSize();

 
 

-      $("#browse_content").html("");
-      $("#browse_content").append(div);
+    if (size > OSM.MAX_REQUEST_AREA) {
+      setStatus(I18n.t("browse.start_rjs.unable_to_load_size", { max_bbox_size: OSM.MAX_REQUEST_AREA, bbox_size: size }));
+      return;

     }
 
     }
 

-    function customDataLoader(resp, options) {
-      if (map.dataLayer.active) {
-        var request = resp.priv;
-        var doc = request.responseXML;
+    setStatus(I18n.t('browse.start_rjs.loading'));

 
 

-        if (!doc || !doc.documentElement) {
-          doc = request.responseText;
-        }
+    var url = "/api/" + OSM.API_VERSION + "/map?bbox=" + bounds.toBBoxString();

 
 

-        resp.features = this.format.read(doc);
+    /*
+     * 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.
+     */
+    var maxFeatures = 2000;

 
 

-        if (!this.maxFeatures || resp.features.length <= this.maxFeatures) {
-          options.callback.call(options.scope, resp);
-        } else {
-          displayFeatureWarning(resp.features.length, this.maxFeatures, function () {
-            options.callback.call(options.scope, resp);
-          });
-        }
+    /*@cc_on
+      if (navigator.appVersion < 8) {
+        maxFeatures = 100;
+      } else if (navigator.appVersion < 9) {
+        maxFeatures = 500;

       }
       }

-    }
+    @*/

 
 

-    function getData(bounds, reload) {
-      var projected = unproj(bounds);
-      var size = projected.getWidth() * projected.getHeight();
+    $.ajax({
+      url: url,
+      success: function (xml) {
+        clearStatus();

 
 

-      if (size > OSM.MAX_REQUEST_AREA) {
-        setStatus(I18n.t("browse.start_rjs.unable_to_load_size", { max_bbox_size: OSM.MAX_REQUEST_AREA, bbox_size: size }));
-      } else {
-        loadData("/api/" + OSM.API_VERSION + "/map?bbox=" + projected.toBBOX(), reload);
-      }
-    }
+        $("#browse_content").empty();
+        dataLayer.clearLayers();
+        selectedLayer = null;

 
 

-    function loadData(url, reload) {
-      setStatus(I18n.t('browse.start_rjs.loading'));
+        var features = dataLayer.buildFeatures(xml);

 
 

-      $("#browse_content").empty();
+        function addFeatures() {
+          dataLayer.addData(features);

 
 

-      var formatOptions = {
-        checkTags: true,
-        interestingTagsExclude: ['source','source_ref','source:ref','history','attribution','created_by','tiger:county','tiger:tlid','tiger:upload_uuid']
-      };
-
-      if (areasHidden) formatOptions.areaTags = [];
-
-      if (!browseDataLayer || reload) {
-        var style = new OpenLayers.Style();
-
-        style.addRules([new OpenLayers.Rule({
-          symbolizer: {
-            Polygon: { fillColor: '#ff0000', strokeColor: '#ff0000' },
-            Line: { fillColor: '#ffff00', strokeColor: '#000000', strokeOpacity: '0.4' },
-            Point: { fillColor: '#00ff00', strokeColor: '#00ff00' }
-          }
-        })]);
-
-        if (browseDataLayer) browseDataLayer.destroyFeatures();
-
-        /*
-         * 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.
-         */
-        var maxFeatures = 2000;
-
-        /*@cc_on
-          if (navigator.appVersion < 8) {
-            maxFeatures = 100;
-          } else if (navigator.appVersion < 9) {
-            maxFeatures = 500;
-          }
-        @*/
-
-        browseDataLayer = new OpenLayers.Layer.Vector("Data", {
-          strategies: [
-            new OpenLayers.Strategy.Fixed()
-          ],
-          protocol: new OpenLayers.Protocol.HTTP({
-            url: url,
-            format: new OpenLayers.Format.OSM(formatOptions),
-            maxFeatures: maxFeatures,
-            handleRead: customDataLoader
-          }),
-          projection: new OpenLayers.Projection("EPSG:4326"),
-          displayInLayerSwitcher: false,
-          styleMap: new OpenLayers.StyleMap({
-            'default': style,
-            'select': { strokeColor: '#0000ff', strokeWidth: 8 }
-          })
-        });
-        browseDataLayer.events.register("loadend", browseDataLayer, dataLoaded );
-        map.addLayer(browseDataLayer);
-
-        browseSelectControl = new OpenLayers.Control.SelectFeature(browseDataLayer, { onSelect: onFeatureSelect });
-        browseSelectControl.handlers.feature.stopDown = false;
-        browseSelectControl.handlers.feature.stopUp = false;
-        map.addControl(browseSelectControl);
-        browseSelectControl.activate();
-      } else {
-        browseDataLayer.destroyFeatures();
-        browseDataLayer.refresh({ url: url });
-      }
+          layersById = {};

 
 

-      browseActiveFeature = null;
-    }
+          dataLayer.eachLayer(function (layer) {
+            var feature = layer.feature;
+            layersById[feature.id] = layer;
+            $.extend(feature, {
+              typeName: featureTypeName(feature),
+              url: "/browse/" + feature.type + "/" + feature.id,
+              name: featureName(feature)
+            });
+          });

 
 

-    function dataLoaded() {
-      if (this.map.dataLayer.active) {
-        clearStatus();
+          browseObjectList = $(JST["templates/browse/feature_list"]({
+            features: features,
+            url: url
+          }))[0];

 
 

-        var features = [];
-        for (var i = 0; i < this.features.length; i++) {
-          var feature = this.features[i];
-          features.push({
-            typeName: featureTypeName(feature),
-            url: "/browse/" + featureType(feature) + "/" + feature.osm_id,
-            name: featureName(feature),
-            id: feature.id
-          });
+          loadObjectList();

         }
 
         }
 

-        browseObjectList = $(JST["templates/browse/feature_list"]({
-          features: features,
-          url: this.protocol.url
-        }))[0];
-
-        loadObjectList();
+        if (features.length < maxFeatures) {
+          addFeatures();
+        } else {
+          displayFeatureWarning(features.length, maxFeatures, addFeatures);
+        }

       }
       }

-    }
+    });
+  }

 
 

-    function viewFeatureLink() {
-      var feature = browseDataLayer.getFeatureById($(this).data("feature-id"));
-      var layer = feature.layer;
+  function viewFeatureLink() {
+    var layer = layersById[$(this).data("feature-id")];

 
 

-      for (var i = 0; i < layer.selectedFeatures.length; i++) {
-        var f = layer.selectedFeatures[i];
-        layer.drawFeature(f, layer.styleMap.createSymbolizer(f, "default"));
-      }
+    onSelect(layer);

 
 

-      onFeatureSelect(feature);
+    if (locationFilter.isEnabled()) {
+      map.panTo(layer.getBounds().getCenter());
+    }

 
 

-      if (browseMode != "auto") {
-        map.setCenter(feature.geometry.getBounds().getCenterLonLat());
-      }
+    return false;
+  }

 
 

-      return false;
-    }
+  function loadObjectList() {
+    $("#browse_content").html(browseObjectList);
+    $("#browse_content").find("a[data-feature-id]").click(viewFeatureLink);

 
 

-    function loadObjectList() {
-      $("#browse_content").html(browseObjectList);
-      $("#browse_content").find("a[data-feature-id]").click(viewFeatureLink);
+    return false;
+  }

 
 

-      return false;
+  function onSelect(layer) {
+    // Unselect previously selected feature
+    if (selectedLayer) {
+      selectedLayer.setStyle(selectedLayer.originalStyle);

     }
 
     }
 

-    function onFeatureSelect(feature) {
-      // Unselect previously selected feature
-      if (browseActiveFeature) {
-        browseActiveFeature.layer.drawFeature(
-          browseActiveFeature,
-          browseActiveFeature.layer.styleMap.createSymbolizer(browseActiveFeature, "default")
-        );
-      }
+    // Redraw in selected style
+    layer.originalStyle = layer.options;
+    layer.setStyle({color: '#0000ff', weight: 8});

 
 

-      // Redraw in selected style
-      feature.layer.drawFeature(
-        feature, feature.layer.styleMap.createSymbolizer(feature, "select")
-      );
-
-      // If the current object is the list, don't innerHTML="", since that could clear it.
-      if ($("#browse_content").firstChild == browseObjectList) {
-        $("#browse_content").removeChild(browseObjectList);
-      } else {
-        $("#browse_content").empty();
-      }
+    // If the current object is the list, don't innerHTML="", since that could clear it.
+    if ($("#browse_content").firstChild == browseObjectList) {
+      $("#browse_content").removeChild(browseObjectList);
+    } else {
+      $("#browse_content").empty();
+    }

 
 

-      $("#browse_content").html(JST["templates/browse/feature"]({
-        name: featureNameSelect(feature),
-        url: "/browse/" + featureType(feature) + "/" + feature.osm_id,
-        attributes: feature.attributes
-      }));
+    var feature = layer.feature;

 
 

-      $("#browse_content").find("a.browse_show_list").click(loadObjectList);
-      $("#browse_content").find("a.browse_show_history").click(loadHistory);
+    $("#browse_content").html(JST["templates/browse/feature"]({
+      name: featureNameSelect(feature),
+      url: "/browse/" + feature.type + "/" + feature.id,
+      attributes: feature.tags
+    }));

 
 

-      // Stash the currently drawn feature
-      browseActiveFeature = feature;
-    }
+    $("#browse_content").find("a.browse_show_list").click(loadObjectList);
+    $("#browse_content").find("a.browse_show_history").click(loadHistory);

 
 

-    function loadHistory() {
-      $(this).attr("href", "").text(I18n.t('browse.start_rjs.wait'));
+    // Stash the currently drawn feature
+    selectedLayer = layer;
+  }

 
 

-      var feature = browseActiveFeature;
+  function loadHistory() {
+    $(this).attr("href", "").text(I18n.t('browse.start_rjs.wait'));

 
 

-      $.ajax({
-        url: "/api/" + OSM.API_VERSION + "/" + featureType(feature) + "/" + feature.osm_id + "/history",
-        success: function (xml) {
-          if (browseActiveFeature != feature || $("#browse_content").firstChild == browseObjectList) {
-            return;
-          }
+    var feature = selectedLayer.feature;

 
 

-          $(this).remove();
+    $.ajax({
+      url: "/api/" + OSM.API_VERSION + "/" + feature.type + "/" + feature.id + "/history",
+      success: function (xml) {
+        if (selectedLayer.feature != feature || $("#browse_content").firstChild == browseObjectList) {
+          return;
+        }

 
 

-          var history = [];
-          var nodes = xml.getElementsByTagName(featureType(feature));
-          for (var i = nodes.length - 1; i >= 0; i--) {
-            history.push({
-              user: nodes[i].getAttribute("user") || I18n.t('browse.start_rjs.private_user'),
-              timestamp: nodes[i].getAttribute("timestamp")
-            });
-          }
+        $(this).remove();

 
 

-          $("#browse_content").append(JST["templates/browse/feature_history"]({
-            name: featureNameHistory(feature),
-            url: "/browse/" + featureType(feature) + "/" + feature.osm_id,
-            history: history
-          }));
-        }.bind(this)
-      });
+        var history = [];
+        var nodes = xml.getElementsByTagName(feature.type);
+        for (var i = nodes.length - 1; i >= 0; i--) {
+          history.push({
+            user: nodes[i].getAttribute("user") || I18n.t('browse.start_rjs.private_user'),
+            timestamp: nodes[i].getAttribute("timestamp")
+          });
+        }

 
 

-      return false;
-    }
+        $("#browse_content").append(JST["templates/browse/feature_history"]({
+          name: featureNameHistory(feature),
+          url: "/browse/" + feature.type + "/" + feature.id,
+          history: history
+        }));
+      }.bind(this)
+    });

 
 

-    function featureType(feature) {
-      if (feature.geometry.CLASS_NAME == "OpenLayers.Geometry.Point") {
-        return "node";
-      } else {
-        return "way";
-      }
-    }
+    return false;
+  }

 
 

-    function featureTypeName(feature) {
-      if (featureType(feature) == "node") {
-        return I18n.t('browse.start_rjs.object_list.type.node');
-      } else if (featureType(feature) == "way") {
-        return I18n.t('browse.start_rjs.object_list.type.way');
-      }
-    }
+  function featureTypeName(feature) {
+    return I18n.t('browse.start_rjs.object_list.type.' + feature.type);
+  }

 
 

-    function featureName(feature) {
-      var lang = $('html').attr('lang');
-      if (feature.attributes['name:' + lang]) {
-        return feature.attributes['name:' + lang];
-      } else if (feature.attributes.name) {
-        return feature.attributes.name;
-      } else {
-        return feature.osm_id;
-      }
-    }
+  function featureName(feature) {
+    return feature.tags['name:' + $('html').attr('lang')] ||
+      feature.tags.name ||
+      feature.id;
+  }

 
 

-    function featureNameSelect(feature) {
-      var lang = $('html').attr('lang');
-      if (feature.attributes['name:' + lang]) {
-        return feature.attributes['name:' + lang];
-      } else if (feature.attributes.name) {
-        return feature.attributes.name;
-      } else if (featureType(feature) == "node") {
-        return I18n.t("browse.start_rjs.object_list.selected.type.node", { id: feature.osm_id });
-      } else if (featureType(feature) == "way") {
-        return I18n.t("browse.start_rjs.object_list.selected.type.way", { id: feature.osm_id });
-      }
-    }
+  function featureNameSelect(feature) {
+    return feature.tags['name:' + $('html').attr('lang')] ||
+      feature.tags.name ||
+      I18n.t("browse.start_rjs.object_list.selected.type." + feature.type, { id: feature.id });
+  }

 
 

-    function featureNameHistory(feature) {
-      var lang = $('html').attr('lang');
-      if (feature.attributes['name:' + lang]) {
-        return feature.attributes['name:' + lang];
-      } else if (feature.attributes.name) {
-        return feature.attributes.name;
-      } else if (featureType(feature) == "node") {
-        return I18n.t("browse.start_rjs.object_list.history.type.node", { id: feature.osm_id });
-      } else if (featureType(feature) == "way") {
-        return I18n.t("browse.start_rjs.object_list.history.type.way", { id: feature.osm_id });
-      }
-    }
+  function featureNameHistory(feature) {
+    return feature.tags['name:' + $('html').attr('lang')] ||
+      feature.tags.name ||
+      I18n.t("browse.start_rjs.object_list.history.type." + feature.type, { id: feature.id });
+  }

 
 

-    function setStatus(status) {
-      $("#browse_status").html(status);
-      $("#browse_status").show();
-    }
+  function setStatus(status) {
+    $("#browse_status").html(status);
+    $("#browse_status").show();
+  }

 
 

-    function clearStatus() {
-      $("#browse_status").html("");
-      $("#browse_status").hide();
-    }
+  function clearStatus() {
+    $("#browse_status").html("");
+    $("#browse_status").hide();

   }
   }

-});
\ No newline at end of file
+});