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' %>

<noscript>
  <div id="noscript">
    <p>You are either using a browser that doesn't support javascript, or you have disabled javascript.</p>
    <p>OpenStreetMap uses javascript for its slippy map.</p>
    <p>You may want to try the <a href="http://tah.openstreetmap.org/Browse/">Tiles@Home static tile browser</a> if you are unable to enable javascript.</p>
  </div>
</noscript>

<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 its contributors.</td>
    </tr>
  </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'])
	box = true if params['box']=="yes" 
end

# Decide on a lat lon to initialise the map with. Various ways of doing this
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?("_osm_location")
	lon,lat,zoom,layers = cookies["_osm_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') 
	end
	layers = h(params['layers']) 
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");

    <% unless OSM_STATUS == :api_offline or OSM_STATUS == :database_offline %>
    map.dataLayer = new OpenLayers.Layer("Data", { "visibility": false });
    map.dataLayer.events.register("visibilitychanged", map.dataLayer, toggleData);
    map.addLayer(map.dataLayer);
    <% end %>

    <% if bbox %>
    var bbox = new OpenLayers.Bounds(<%= minlon %>, <%= minlat %>, <%= maxlon %>, <%= maxlat %>);

    setMapExtent(bbox);
    <%    if box %>
    // IE requires Vector layers be initialised on page load, and not under deferred script conditions
    Event.observe(window, 'load', function() {addBoxToMap(bbox)});
    <%    end %>
    <% else %>
    var centre = new OpenLayers.LonLat(<%= lon %>, <%= lat %>);
    var zoom = <%= zoom %>;

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

    setMapCenter(centre, zoom);
    <% end %>

    <% if !layers.nil? and !layers.empty? %>
    setMapLayers("<%= layers %>");
    <% end %>

    <% if marker %>
    marker = addMarkerToMap(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 toggleData() {
    if (map.dataLayer.visibility) {
      <%= remote_function :url => { :controller => 'browse', :action => 'start' } %>
    } else {
      closeSidebar();
    }
  }

  function getPosition() {
    return getMapCenter();
  }

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

    setMapCenter(centre, zoom);

    if (marker)
      removeMarkerFromMap(marker);

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

  function updateLocation() {
    var lonlat = getMapCenter();
    var zoom = map.getZoom();
    var layers = getMapLayers();
    var extents = getMapExtent();

    updatelinks(lonlat.lon, lonlat.lat, zoom, layers, extents.left, extents.bottom, extents.right, extents.top);
      
    document.cookie = "_osm_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;

  <% if params['action'] == 'export' %>
  <%= remote_function :url => { :controller => 'export', :action => 'start' } %>
  <% end %>
// -->
</script>