MediaWiki:Common.js

From FridaV

Revision as of 22:38, 10 April 2009

/* Any JavaScript here will be loaded for all users on every page load. */

 plot_options = {
  yaxis: { min: 0 },
  xaxis: { },
  points: { show: true },
  lines: { show: true },
  legend: { position: 'nw' },
 };

 var charts = {
   chart: {},
   init: function() {
     $('table.flot').each(function(i) {
       var my_id=$(this).attr('id');
       var my_chart={cols:{}, ncols:[], series:{}};
       charts.chart[my_id]=my_chart;
 
       // get fields
       $('tr:first th',this).each(function(j) {
          var name=this.innerHTML;
          my_chart.cols[name]=j;
          my_chart.ncols.push(name);
          this.onclick=function(e) { charts.toggle_series(my_id,name,e); }
       }); // fields
 
       // get rows
       $('tr',this).each(function(j) {
          if(j>=1) {
            // var epoch=$('th.day',this).attr('epoch')*1000;
            var epoch=1-j;
            $('td',this).each(function(ii) { // columns
              var a=my_chart.ncols[ii];
              var v=this.innerHTML;
              if((!v) || v=='None') v=0;
              if(!my_chart.series[a]) my_chart.series[a]={ label: a , data: [] };
              this.onclick=function(e) { charts.toggle_series(my_id,a,e); }
              my_chart.series[a].data.unshift([epoch,parseFloat(v)]);
            }); // columns
          }
       }); // rows
       return;
     }); // tables
   }, // init()
   toggle_series: function(id,name,e) {
     var my_chart=charts.chart[id];
     $('#'+id+' tr').each(function(i) {
       if(i<1) {
         $('th:eq('+my_chart.cols[name]+')',this).toggleClass('plot');
       } else {
         $('td:eq('+my_chart.cols[name]+')',this).toggleClass('plot');
       }
     });
     charts.plot(id);
   }, // toggle_series()
   plot: function(id) {
     if($('#'+id+'-flot-chart').length==0) {
       // create plotarea
       $('#'+id).before('<div class="flot-chart" id="'+id+'-flot-chart"/></div>');
     }
     var data=[];
     $('#'+id+' tr:first th.plot').each(function(i) {
        var name=this.innerHTML;
        if(charts.chart[id].series[name]) {
          data.push(charts.chart[id].series[name]);
        }
     });
     if(data.length>0) {
        $.plot($('#'+id+'-flot-chart'), data, plot_options);
        $('#'+id+'-flot-chart').show(1);
     } else {
        $('#'+id+'-flot-chart').hide(1);
     }
   }
 }
 
 // $(document).ready(charts.init);

 function say(msg) {
   console.log(msg);
 }

 function osm_getTileURL(bounds) {
    var res = this.map.getResolution();
    var x = Math.round((bounds.left - this.maxExtent.left) / (res * this.tileSize.w));
    var y = Math.round((this.maxExtent.top - bounds.top) / (res * this.tileSize.h));
    var z = this.map.getZoom();
    var limit = Math.pow(2, z);
 
    if (y < 0 || y >= limit) {
        return OpenLayers.Util.getImagesLocation() + "404.png";
    } else {
        x = ((x % limit) + limit) % limit;
        return this.url + z + "/" + x + "/" + y + "." + this.type;
    }
 }

 var map;
 var center;
 
 window.jQuery(function ($) {

   $('div#TheMap').each(function () {
      $(this).css('background','gray');
 
     map = new OpenLayers.Map('TheMap', {
           projection: new OpenLayers.Projection("EPSG:900913"),
           displayProjection: new OpenLayers.Projection("EPSG:4326"),
           units: "m",
           maxResolution: 156543.0339,
           numZoomLevels: 18,
           maxExtent: new OpenLayers.Bounds(-20037508.34, -20037508.34,
                                             20037508.34, 20037508.34),
           restrictedExtent: new OpenLayers.Bounds(-12037508.34, -15037508.34,
                                                    20037508.34, 15037508.34),
 
            });
 
     // get parameters from span tags
     var pn = ['lat','lon','zoom'];
     var p = {};
     for(var i in pn) {
       $('span.'+pn[i]).each(function() { p[pn[i]]=this.innerHTML; $(this).hide(); });
     }
     say(p);
 
     // create OSM layer
     var mapnik = new OpenLayers.Layer.TMS(
                "OpenStreetMap (Mapnik)",
                "http://tile.openstreetmap.org/",
                {
                    type: 'png', getURL: osm_getTileURL,
                    displayOutsideMaxExtent: true,
                    attribution: '<a href="http://www.openstreetmap.org/">OpenStreetMap</a>'
                }
            );
 
     map.addLayer(mapnik);
 
     map.addControl(new OpenLayers.Control.Permalink('Link'));
     map.addControl(new OpenLayers.Control.MousePosition());
     map.addControl(new OpenLayers.Control.KeyboardDefaults());
 
     if(map.getCenter()==null) {
       center = new OpenLayers.LonLat(p.lon,p.lat);
       say(center);
       center=center.transform(map.displayProjection, map.getProjectionObject());
       say(center);
       map.setCenter(center);
       say(map.getCenter());
     }
     if(map.getZoom()==null) {
       map.zoomTo(parseFloat(p.zoom));
     }
  });

  charts.init();
 });