openstreetmap-website/app/views/site/index.rhtml

<% content_for :greeting do %>
<% if @user and !@user.home_lon.nil? and !@user.home_lat.nil? %>
<%= link_to_function 'home', "setPosition(#{@user.home_lat}, #{@user.home_lon}, 10)" %> |
<% end %>
<% end %>

<%= render :partial => 'sidebar', :locals => { :onopen => "resizeMap();", :onclose => "resizeMap();" } %>
<%= render :partial => 'key' %>
<%= render :partial => 'search' %>

<div id="map">
<div id="permalink"><a href="/" id="permalinkanchor">Permalink</a></div>
</div> 

<div id="attribution">
<table width="100%">
<tr>
<td align="left">http://creativecommons.org/licenses/by-sa/2.0/</td>
<td align="right">http://openstreetmap.org/</td>
</tr>
<tr>
<td colspan="2" align="center">
Licensed under the Creative Commons Attribution-Share Alike 2.0 license
by the OpenStreetMap project and it's contributors.
</td>
</table>
</div>

<% if params['mlon'] and params['mlat'] %>
<% marker = true %>
<% mlon = h(params['mlon']) %> 
<% mlat = h(params['mlat']) %>
<% end %>

<% if params['minlon'] and params['minlat'] and params['maxlon'] and params['maxlat'] %>
<% bbox = true %>
<% minlon = h(params['minlon']) %>
<% minlat = h(params['minlat']) %>
<% maxlon = h(params['maxlon']) %>
<% maxlat = h(params['maxlat']) %>
<% end %>

<% if params['lon'] and params['lat'] %>
<% lon =  h(params['lon']) %>
<% lat =  h(params['lat']) %>
<% zoom =  h(params['zoom'] || '5') %>
<% layers = h(params['layers']) %>
<% elsif params['mlon'] and params['mlat'] %>
<% lon = h(params['mlon']) %> 
<% lat = h(params['mlat']) %>
<% zoom =  h(params['zoom'] || '12') %>
<% layers = h(params['layers']) %>
<% elsif cookies.key?("location") %>
<% lon,lat,zoom,layers = cookies["location"].split(",") %>
<% elsif @user and !@user.home_lon.nil? and !@user.home_lat.nil? %> 
<% lon =  @user.home_lon %>
<% lat =  @user.home_lat %>
<% zoom = '10' %>
<% else %>
<% session[:location] = OSM::IPLocation(request.env['REMOTE_ADDR']) unless session[:location] %>
<% if session[:location] %>
<% bbox = true %>
<% minlon = session[:location][:minlon] %>
<% minlat = session[:location][:minlat] %>
<% maxlon = session[:location][:maxlon] %>
<% maxlat = session[:location][:maxlat] %>
<% else %>
<% lon =  '-0.1' %>
<% lat =  '51.5' %>
<% zoom =  h(params['zoom'] || '5') %>
<% layers = h(params['layers']) %>
<% end %>
<% end %>

<%= javascript_include_tag '/openlayers/OpenLayers.js' %>
<%= javascript_include_tag '/openlayers/OpenStreetMap.js' %>
<%= javascript_include_tag 'map.js' %>


<script type="text/javascript" defer="defer">
  <!--
  var brokenContentSize = $("content").offsetWidth == 0;
  var marker;
  var map;

  function mapInit(){
    map = createMap("map");

    <% if bbox %>
    var min = lonLatToMercator(new OpenLayers.LonLat(<%= minlon %>, <%= minlat %>));
    var max = lonLatToMercator(new OpenLayers.LonLat(<%= maxlon %>, <%= maxlat %>));
    var bbox = new OpenLayers.Bounds(min.lon, min.lat, max.lon, max.lat);

    map.zoomToExtent(bbox);
    <% else %>
    var centre = lonLatToMercator(new OpenLayers.LonLat(<%= lon %>, <%= lat %>));
    var zoom = <%= zoom %>;

    <% if params['scale'] and params['scale'].length > 0 then %>
    zoom = scaleToZoom(<%= params['scale'].to_f() %>);
    <% end %>

    map.setCenter(centre, zoom);
    <% end %>

    <% if layers %>
    setMapLayers("<%= layers %>");
    <% end %>

    <% if marker %>
    marker = addMarkerToMap(lonLatToMercator(new OpenLayers.LonLat(<%= mlon %>, <%= mlat %>)));
    <% end %>

    map.events.register("zoomend", map, updateKey);

    map.events.register("moveend", map, updateLocation);
    map.events.register("changelayer", map, updateLocation);
    updateLocation();

    handleResize();
  }

  function getPosition() {
    return mercatorToLonLat(map.getCenter());
  }

  function setPosition(lat, lon, zoom) {
    var centre = lonLatToMercator(new OpenLayers.LonLat(lon, lat));

    map.setCenter(centre, zoom);

    if (marker)
      removeMarkerFromMap(marker);

    marker = addMarkerToMap(centre, getArrowIcon());
  }

  function updateLocation() {
    var lonlat = mercatorToLonLat(map.getCenter());
    var zoom = map.getZoom();
    var layers = getMapLayers();

    updatelinks(lonlat.lon, lonlat.lat, zoom, layers);

    document.cookie = "location=" + lonlat.lon + "," + lonlat.lat + "," + zoom + "," + layers;
  }

  function resizeContent() {
    var content = $("content");
    var rightMargin = parseInt(getStyle(content, "right"));
    var bottomMargin = parseInt(getStyle(content, "bottom"));

    content.style.width = document.documentElement.clientWidth - content.offsetLeft - rightMargin;
    content.style.height = document.documentElement.clientHeight - content.offsetTop - bottomMargin;
  }
  
  function resizeMap() {
    var centre = map.getCenter();
    var zoom = map.getZoom();
    var sidebar_width = $("sidebar").offsetWidth;

    if (sidebar_width > 0) {
      sidebar_width = sidebar_width + 5
    }

    $("map").style.left = (sidebar_width) + "px";
    $("map").style.width = ($("content").offsetWidth - sidebar_width) + "px";
    $("map").style.height = ($("content").offsetHeight - 2) + "px";

    map.setCenter(centre, zoom);
  }

  function handleResize() {
    if (brokenContentSize) {
      resizeContent();
    }

    resizeMap();
  }
  
  mapInit();

  window.onload = handleResize;
  window.onresize = handleResize;
// -->
</script>