| 1 | <html xmlns="http://www.w3.org/1999/xhtml"> |
|---|
| 2 | <head> |
|---|
| 3 | <title>Open Space Tutorial - Example 1</title> |
|---|
| 4 | <script type="text/javascript" src="http://openspace.ordnancesurvey.co.uk/osmapapi/openspace.js?key=413F829AAE11F96EE0405F0AF060395F"></script> |
|---|
| 5 | |
|---|
| 6 | <script src="yahoo.js" type="text/javascript"></script> |
|---|
| 7 | <script src="dom.js" type="text/javascript"></script> |
|---|
| 8 | <script src="event.js" type="text/javascript"></script> |
|---|
| 9 | <script src="jsr_class.js" type="text/javascript"></script> |
|---|
| 10 | <script src="jscoord-1.1.1.js" type="text/javascript"></script> |
|---|
| 11 | <script src="prototype.js" type="text/javascript"></script> |
|---|
| 12 | </head> |
|---|
| 13 | <body onload="init()"> |
|---|
| 14 | |
|---|
| 15 | <script type="text/javascript"> |
|---|
| 16 | <!-- |
|---|
| 17 | |
|---|
| 18 | var osMap; |
|---|
| 19 | var markers; |
|---|
| 20 | var url = "/cgi/get-postcodes.fcgi"; |
|---|
| 21 | var grid = "osgb"; |
|---|
| 22 | |
|---|
| 23 | var sources = new Array(1); |
|---|
| 24 | sources[0] = 'this site'; |
|---|
| 25 | sources[1] = '<a href="http://www.freethepostcode.org/">freethepostcode.org</a>'; |
|---|
| 26 | sources[2] = '<a href="http://www.npemap.org.uk">npemap</a>'; |
|---|
| 27 | |
|---|
| 28 | var successHandler = function(o){ |
|---|
| 29 | eval(o.responseText); |
|---|
| 30 | } |
|---|
| 31 | |
|---|
| 32 | var failHander = function(o) { |
|---|
| 33 | // Don't do anything |
|---|
| 34 | $('spinner').innerHTML = '<p class="error">Problem showing existing data.</p>'; |
|---|
| 35 | } |
|---|
| 36 | |
|---|
| 37 | function drawExisting() { |
|---|
| 38 | // Clear all our makers |
|---|
| 39 | for(var marker in osMap.markers) { |
|---|
| 40 | markers.removeMarker(marker); |
|---|
| 41 | alert(marker); |
|---|
| 42 | } |
|---|
| 43 | markers.clearMarkers(); |
|---|
| 44 | |
|---|
| 45 | // Only display at zoom levels 8+ |
|---|
| 46 | if(osMap.zoom < 8) { |
|---|
| 47 | return; |
|---|
| 48 | } |
|---|
| 49 | |
|---|
| 50 | var bounds = osMap.calculateBounds(); |
|---|
| 51 | var params = "mineasting=" + bounds.left + "&maxeasting=" + bounds.right + "&minnorthing=" + bounds.bottom + "&maxnorthing=" + bounds.top + "&grid=" + grid; |
|---|
| 52 | $('spinner').innerHTML = '<p>Fetching postcodes, please wait</p>'; |
|---|
| 53 | |
|---|
| 54 | var myAjax = new Ajax.Request(url, { |
|---|
| 55 | method: 'get', |
|---|
| 56 | parameters: params, |
|---|
| 57 | onComplete: successHandler, |
|---|
| 58 | onFailure: failHander |
|---|
| 59 | }); |
|---|
| 60 | } |
|---|
| 61 | |
|---|
| 62 | function addNew(e) { |
|---|
| 63 | var en = |
|---|
| 64 | osMap.getLonLatFromViewPortPx( osMap.events.getMousePosition(e) ); |
|---|
| 65 | var easting = en.lon; |
|---|
| 66 | var northing = en.lat; |
|---|
| 67 | alert("e=" + easting + " n=" + northing); |
|---|
| 68 | } |
|---|
| 69 | |
|---|
| 70 | function init() |
|---|
| 71 | { |
|---|
| 72 | osMap = new OpenSpace.Map('map'); |
|---|
| 73 | osMap.setCenter(new OpenSpace.MapPoint(438760, 114760), 8); |
|---|
| 74 | |
|---|
| 75 | markers = new OpenLayers.Layer.Markers("Markers"); |
|---|
| 76 | osMap.addLayer(markers); |
|---|
| 77 | |
|---|
| 78 | osMap.events.register("moveend", osMap, drawExisting); |
|---|
| 79 | osMap.events.register("zoomend", osMap, drawExisting); |
|---|
| 80 | osMap.events.register("click", osMap, addNew); |
|---|
| 81 | |
|---|
| 82 | drawExisting(); |
|---|
| 83 | } |
|---|
| 84 | |
|---|
| 85 | function addMarker(postcode, easting, northing, others ) { |
|---|
| 86 | var id = others[0]; |
|---|
| 87 | var source = others[1]; |
|---|
| 88 | |
|---|
| 89 | var pos = new OpenSpace.MapPoint(easting, northing); |
|---|
| 90 | var content = "<div><b>Postcode:</b> " + postcode + "<br /><b>Location:</b> " + easting + ", " + northing + "<br /><b>Source:</b> " + sources[source] + "<br /><b>ID:</b> " + id + "</div>"; |
|---|
| 91 | |
|---|
| 92 | var marker = osMap.createMarker(pos, null, content); |
|---|
| 93 | markers.addMarker(marker); |
|---|
| 94 | } |
|---|
| 95 | |
|---|
| 96 | function completeMarkers() { |
|---|
| 97 | $('spinner').innerHTML = " "; |
|---|
| 98 | } |
|---|
| 99 | |
|---|
| 100 | // --> |
|---|
| 101 | </script> |
|---|
| 102 | |
|---|
| 103 | <h1>Displaying a marker on a map</h1> |
|---|
| 104 | |
|---|
| 105 | <div id="map" style="width: 800px; height: 500px; border: 1px solid black;"></div> |
|---|
| 106 | |
|---|
| 107 | <div id="spinner" /> |
|---|
| 108 | |
|---|
| 109 | </body> |
|---|
| 110 | </html> |
|---|
