wrmap.js

   1 "use strict";
   2
   3 function init_wrmap(i, jq_map) {
   4         // define constants
   5         var EPSG4326 = new OpenLayers.Projection("EPSG:4326"); // lon/lat
   6         var EPSG3857 = new OpenLayers.Projection("EPSG:3857"); // google
   7
   8         // tool functions
   9         function createElement(tagName, attributes) {
  10                 var element = $(document.createElement(tagName));
  11                 if (attributes === undefined) return element;
  12                 for (var attribute in attributes) {
  13                         element.attr(attribute, attributes[attribute]);
  14                 }
  15                 return element;
  16         }
  17
  18         function appendElement(parentElement, tagName, attributes) {
  19                 if (attributes === undefined) attributes = {};
  20                 var element = createElement(tagName, attributes);
  21                 parentElement.append(element);
  22                 return element;
  23         }
  24
  25
  26         // extract geojson from map element and clear map element's content
  27         jq_map = $(jq_map);
  28         OpenLayers.ImgPath = jq_map.attr('data-img-path'); // e.g. "/mediawiki/extensions/wrmap/openlayers/img/"
  29         var json_string = jq_map.children().last().text();
  30         jq_map.empty(); // once parsed, remove geojson string from the map element.
  31         var format_json = new OpenLayers.Format.JSON();
  32         var json_js = format_json.read(json_string);
  33         var format_geojson = new OpenLayers.Format.GeoJSON();
  34         var features_all = format_geojson.read(json_js);
  35
  36         // extract, tranform and split features to layers
  37         var features_path = new Array();
  38         var features_point = new Array();
  39         for (var i = 0; i != features_all.length; ++i) {
  40                 var feature = features_all[i];
  41                 feature.geometry.transform(EPSG4326, EPSG3857);
  42                 if (feature.geometry instanceof OpenLayers.Geometry.Point) features_point.push(feature);
  43                 else features_path.push(feature);
  44         }
  45
  46
  47         // background layer
  48         // ----------------
  49         var layer_map = new OpenLayers.Layer.Google("Google Physical", {
  50                 type: google.maps.MapTypeId.TERRAIN
  51         });
  52
  53         // // Alternative: OSM map
  54         // var layer_map = new OpenLayers.Layer.OSM();
  55
  56         // // Alternative: Microsoft Bing Maps
  57         // var layer_map = new OpenLayers.Layer.Bing({
  58         //     type: "Road",
  59         //     key: "AgPH3SlIXAwajrJKf0FORQyhTqsP8KIlvtN6RKfvxe6fOB6q6-HFmg8EOFm7LSOA"});
  60
  61         // // Alternative: Dummy base layer
  62         // var layer_map = new OpenLayers.Layer.Vector("Base Layer", {
  63         //     isBaseLayer: true});
  64
  65
  66         // path layer
  67         // ----------
  68         var layer_path = new OpenLayers.Layer.Vector("Path", {
  69                 styleMap: new OpenLayers.StyleMap(new OpenLayers.Style({
  70                                 strokeColor: '${getStrokeColor}',
  71                                 strokeWidth: '${getStrokeWidth}'
  72                         }, {
  73                                 context: {
  74                                         getStrokeColor: function(feature) {
  75                                                 if (feature.attributes.strokeColor !== undefined) return feature.attributes.strokeColor;
  76                                                 if (feature.attributes.type == 'rodelbahn') return '#014e9a';
  77                                                 if (feature.attributes.type == 'gehweg') return '#e98401';
  78                                                 if (feature.attributes.type == 'alternative') return '#7f7fff';
  79                                                 if (feature.attributes.type == 'lift') return '#000000';
  80                                                 if (feature.attributes.type == 'anfahrt') return '#e1e100';
  81                                                 return '#ee9900';
  82                                         },
  83                                         getStrokeWidth: function(feature) {
  84                                                 if (feature.attributes.strokeWidth !== undefined) return feature.attributes.strokeWidth;
  85                                                 if (feature.attributes.type == 'lift' || feature.attributes.type == 'anfahrt') return 3;
  86                                                 return 6;
  87                                         }
  88                                 }
  89                         }))
  90         });
  91
  92
  93         // point layer
  94         // -----------
  95         var filter_point_sledrun = new OpenLayers.Filter.Comparison({
  96                 type: OpenLayers.Filter.Comparison.EQUAL_TO,
  97                 property: 'type',
  98                 value: 'sledrun'
  99         });
 100
 101         // Returns 0 to 5 for features that represent sledruns as their condition
 102         var get_sledrun_condition = function(feature) {
 103                 if (feature.attributes.condition === undefined) return 0;
 104                 return feature.attributes.condition;
 105         }
 106
 107
 108         var layer_point = new OpenLayers.Layer.Vector("Point", {
 109                 styleMap: new OpenLayers.StyleMap({
 110                         'default': new OpenLayers.Style({
 111                                         graphicZIndex: 12,
 112                                         backgroundGraphicZIndex: 11,
 113                                 }, {
 114                                         context: {
 115                                                 // the following context functions should only be available in the rule that uses them,
 116                                                 // but the rule dependent contexts are ignored by OpenLayers (I think that's a bug)
 117                                                 getCondition: get_sledrun_condition,
 118                                                 getSymbol: function(feature) {
 119                                                         var name = feature.attributes.type;
 120                                                         return name;
 121                                                 }
 122                                         },
 123                                         rules: [
 124                                                 new OpenLayers.Rule({
 125                                                         filter: filter_point_sledrun,
 126                                                         symbolizer: {
 127                                                                 externalGraphic: '/vorlagen/bahnzustand${getCondition}nn.png',
 128                                                                 graphicWidth: 17,
 129                                                                 graphicHeight: 17,
 130                                                                 graphicXOffset: -8,
 131                                                                 graphicYOffset: -8,
 132                                                                 backgroundGraphic: "/vorlagen/gmap_rodelbahn_c_s.png",
 133                                                                 backgroundWidth: 23,
 134                                                                 backgroundHeight: 23,
 135                                                                 backgroundXOffset: -8,
 136                                                                 backgroundYOffset: -8,
 137                                                         }
 138                                                 }),
 139                                                 new OpenLayers.Rule({
 140                                                         elseFilter: true,
 141                                                         symbolizer: {
 142                                                                 externalGraphic: '/vorlagen/gmap_${getSymbol}.png',
 143                                                                 graphicWidth: 20,
 144                                                                 graphicHeight: 34,
 145                                                                 graphicXOffset: -10,
 146                                                                 graphicYOffset: -33,
 147                                                         }
 148                                                 })
 149                                         ]
 150                                 }),
 151                         highlight: new OpenLayers.Style({
 152                                         label: "${getTitle}",
 153                                         labelOutlineColor: "white",
 154                                         fontWeight: "bold"
 155                                 }, {
 156                                         context: {
 157                                                 getCondition: get_sledrun_condition,
 158                                                 getTitle: function(feature) {
 159                                                         var title = '';
 160                                                         if (feature.attributes.type != 'point') {
 161                                                                 title = feature.attributes.type;
 162                                                                 title = title.charAt(0).toUpperCase() + title.slice(1); // First letter uppercase
 163                                                                 if (feature.attributes.name !== undefined) title += ': ';
 164                                                         }
 165                                                         if (feature.attributes.name !== undefined) title += feature.attributes.name;
 166                                                         return title;
 167                                                 }
 168                                         },
 169                                         rules: [
 170                                                 new OpenLayers.Rule({
 171                                                         filter: filter_point_sledrun,
 172                                                         symbolizer: {
 173                                                                 label: "${name}",
 174                                                                 labelYOffset: 14,
 175                                                                 externalGraphic: '/vorlagen/bahnzustand${getCondition}nh.png'
 176                                                         }
 177                                                 }),
 178                                                 new OpenLayers.Rule({
 179                                                         elseFilter: true,
 180                                                         symbolizer: {
 181                                                                 labelYOffset: 40
 182                                                         }
 183                                                 })
 184                                         ]
 185                                 }),
 186                         select: new OpenLayers.Style({
 187                                         fillOpacity: 1.
 188                                 }, {
 189                                         context: {
 190                                                 getCondition: get_sledrun_condition,
 191                                         },
 192                                         rules: [
 193                                                 new OpenLayers.Rule({
 194                                                         filter: filter_point_sledrun,
 195                                                         symbolizer: {
 196                                                                 externalGraphic: '/vorlagen/bahnzustand${getCondition}nh.png',
 197                                                                 backgroundGraphic: false,
 198                                                                 graphicXOffset: -6,
 199                                                                 graphicYOffset: -6
 200                                                         }
 201                                                 }),
 202                                                 new OpenLayers.Rule({
 203                                                         elseFilter: true
 204                                                 })
 205                                         ]
 206                                 })
 207                 }),
 208                 rendererOptions: {yOrdering: true}
 209         });
 210
 211
 212         // map itself
 213         // ----------
 214         var lon = json_js.properties.lon;
 215         var lat = json_js.properties.lat;
 216         var zoom = json_js.properties.zoom;
 217         var width = json_js.properties.width;
 218         var height = json_js.properties.height;
 219         if (zoom === undefined) zoom = 10; // default zoom
 220         if (width === undefined) width = '100%'; // default width
 221         if (height === undefined) height = 450;  // default: 450 pixel
 222         jq_map.width(width);
 223         jq_map.height(height);
 224         var map = new OpenLayers.Map(jq_map.context, {
 225                 projection: EPSG3857,
 226                 displayProjection: EPSG4326,
 227                 units: "m",
 228                 theme: null,
 229                 layers: [layer_map, layer_path, layer_point],
 230                 center: new OpenLayers.LonLat(lon, lat).transform(EPSG4326, EPSG3857),
 231                 zoom: zoom
 232         });
 233
 234
 235         // add features
 236         // if this would be done before the layer is added to the map, the features are not added
 237         layer_path.addFeatures(features_path);
 238         layer_point.addFeatures(features_point);
 239
 240         // disable mouse wheel zoom
 241         var navigation_control = map.getControlsByClass('OpenLayers.Control.Navigation')[0];
 242         navigation_control.disableZoomWheel();
 243
 244         // layer switcher
 245         // map.addControl(new OpenLayers.Control.LayerSwitcher());
 246
 247         // print sledrun name when mouse moves over it
 248         map.addControl(new OpenLayers.Control.SelectFeature(layer_point, {
 249                 hover: true,
 250                 highlightOnly: true,
 251                 autoActivate: true,
 252                 renderIntent: "highlight"
 253         }));
 254
 255         // show popup when user clicks on a sledrun icon
 256         map.addControl(new OpenLayers.Control.SelectFeature(layer_point, {
 257                 autoActivate: true,
 258                 toggle: true,
 259                 onSelect: function(feature) {
 260                         var attr = feature.attributes;
 261                         var popup_div = createElement('div');
 262
 263                         // name
 264                         if (attr.name !== undefined && (attr.wiki !== undefined || attr.thumb_url !== undefined)) {
 265                                 var h2 = appendElement(popup_div, 'h2');
 266                                 if (attr.wiki === undefined) h2.text(attr.name);
 267                                 else appendElement(h2, 'a', {href: attr.wiki}).text(attr.name);
 268                         }
 269
 270                         // sledrun information
 271                         if (attr.type == 'sledrun') {
 272                                 var p = appendElement(popup_div, 'p').text('Rodelbahnzustand').append(createElement('br'));
 273                                 if (attr.condition !== undefined) {
 274                                         var condition_text = {1: 'Sehr gut', 2: 'Gut', 3: 'Mittelmäßig', 4: 'Schlecht', 5: 'Geht nicht'};
 275                                         var year_month_day = attr.date_report.split('-');
 276                                         p.append(createElement('a', {href: attr.wiki + '#Eintr.C3.A4ge'}).text(condition_text[attr.condition]), ' ');
 277                                         p.append(createElement('small').text(year_month_day[2] + '.' + year_month_day[1] + '.'), ' ');
 278                                         p.append(createElement('em').append(createElement('a', {href: attr.wiki + '#Eintragen'}).text('Neu')));
 279                                 } else {
 280                                         p.append(createElement('em').append(createElement('a', {href: attr.wiki + '#Eintragen'}).text('Bitte eintragen')));
 281                                 }
 282                         }
 283
 284                         // wiki link
 285                         if (attr.wiki !== undefined) {
 286                                 var a = appendElement(appendElement(popup_div, 'p'), 'a', {href: attr.wiki});
 287                                 var detail_text = 'Details';
 288                                 if (attr.type == 'sledrun') detail_text += ' zur Rodelbahn';
 289                                 if (attr.type == 'gasthaus') detail_text += ' zum Gasthaus';
 290                                 if (attr.thumb_url === undefined) a.text(detail_text);
 291                                 else a.append(createElement('img', {src: attr.thumb_url, alt: detail_text, title: detail_text}));
 292                         }
 293
 294                         // no popup if we don't have anything to say
 295                         if (popup_div.children().length == 0) return;
 296
 297                         // Open popup
 298                         var selectFeatureControl = this;
 299                         var popup = new OpenLayers.Popup.FramedCloud('sledruninfopopup_' + attr.wiki,
 300                         feature.geometry.getBounds().getCenterLonLat(),
 301                         null,
 302                         popup_div.html(),
 303                         null, true, function(event) {
 304                                 // onPopupClose
 305                                 selectFeatureControl.unselectAll();
 306                         });
 307                         feature.popup = popup;
 308                         map.addPopup(popup);
 309                 },
 310                 onUnselect: function(feature) {
 311                         if (feature.popup === null) return;
 312
 313                         // Close popup
 314                         map.removePopup(feature.popup);
 315                         feature.popup.destroy();
 316                         feature.popup = null;
 317                 }
 318         }));
 319 }
 320
 321
 322 function init_wrmaps() {
 323         var jq_maps = $('.wrmap'); // all wrmap <div> elements
 324         jq_maps.each(init_wrmap);
 325 }
 326
 327
 328 $(document).ready(init_wrmaps);
 329