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         var ext_path = jq_map.attr('data-ext-path'); // e.g. '/mediawiki/extensions/wrmap'
  29         var img_path = ext_path + '/img';
  30         OpenLayers.ImgPath = ext_path + '/openlayers/img/'; // e.g. '/mediawiki/extensions/wrmap/openlayers/img/'
  31         var json_string = jq_map.children().last().text();
  32         jq_map.empty(); // once parsed, remove geojson string from the map element.
  33         var format_json = new OpenLayers.Format.JSON();
  34         var json_js = format_json.read(json_string);
  35         var format_geojson = new OpenLayers.Format.GeoJSON();
  36         var features_all = format_geojson.read(json_js);
  37
  38         // extract, tranform and split features to layers
  39         var features_path = new Array();
  40         var features_point = new Array();
  41         for (var i = 0; i != features_all.length; ++i) {
  42                 var feature = features_all[i];
  43                 feature.geometry.transform(EPSG4326, EPSG3857);
  44                 if (feature.geometry instanceof OpenLayers.Geometry.Point) features_point.push(feature);
  45                 else features_path.push(feature);
  46         }
  47
  48
  49         // background layer
  50         // ----------------
  51         var layer_map = new OpenLayers.Layer.Google("Google Physical", {
  52                 type: google.maps.MapTypeId.TERRAIN
  53         });
  54
  55         // // Alternative: OSM map
  56         // var layer_map = new OpenLayers.Layer.OSM();
  57
  58         // // Alternative: Microsoft Bing Maps
  59         // var layer_map = new OpenLayers.Layer.Bing({
  60         //     type: "Road",
  61         //     key: "AgPH3SlIXAwajrJKf0FORQyhTqsP8KIlvtN6RKfvxe6fOB6q6-HFmg8EOFm7LSOA"});
  62
  63         // // Alternative: Dummy base layer
  64         // var layer_map = new OpenLayers.Layer.Vector("Base Layer", {
  65         //     isBaseLayer: true});
  66
  67
  68         // path layer
  69         // ----------
  70         var layer_path = new OpenLayers.Layer.Vector("Path", {
  71                 styleMap: new OpenLayers.StyleMap(new OpenLayers.Style({
  72                                 strokeColor: '${getStrokeColor}',
  73                                 strokeWidth: '${getStrokeWidth}'
  74                         }, {
  75                                 context: {
  76                                         getStrokeColor: function(feature) {
  77                                                 if (feature.attributes.strokeColor !== undefined) return feature.attributes.strokeColor;
  78                                                 if (feature.attributes.type == 'rodelbahn') return '#014e9a';
  79                                                 if (feature.attributes.type == 'gehweg') return '#e98401';
  80                                                 if (feature.attributes.type == 'alternative') return '#7f7fff';
  81                                                 if (feature.attributes.type == 'lift') return '#000000';
  82                                                 if (feature.attributes.type == 'anfahrt') return '#e1e100';
  83                                                 return '#ee9900';
  84                                         },
  85                                         getStrokeWidth: function(feature) {
  86                                                 if (feature.attributes.strokeWidth !== undefined) return feature.attributes.strokeWidth;
  87                                                 if (feature.attributes.type == 'lift' || feature.attributes.type == 'anfahrt') return 3;
  88                                                 return 6;
  89                                         }
  90                                 }
  91                         }))
  92         });
  93
  94
  95         // point layer
  96         // -----------
  97         var filter_point_sledrun = new OpenLayers.Filter.Comparison({
  98                 type: OpenLayers.Filter.Comparison.EQUAL_TO,
  99                 property: 'type',
 100                 value: 'sledrun'
 101         });
 102
 103         // Returns 0 to 5 for features that represent sledruns as their condition
 104         var get_sledrun_condition = function(feature) {
 105                 if (feature.attributes.condition === undefined) return 0;
 106                 return feature.attributes.condition;
 107         }
 108
 109
 110         var layer_point = new OpenLayers.Layer.Vector("Point", {
 111                 styleMap: new OpenLayers.StyleMap({
 112                         'default': new OpenLayers.Style({
 113                                         graphicZIndex: 12,
 114                                         backgroundGraphicZIndex: 11,
 115                                 }, {
 116                                         context: {
 117                                                 // the following context functions should only be available in the rule that uses them,
 118                                                 // but the rule dependent contexts are ignored by OpenLayers (I think that's a bug)
 119                                                 getCondition: get_sledrun_condition,
 120                                                 getSymbol: function(feature) {
 121                                                         var name = feature.attributes.type;
 122                                                         return name;
 123                                                 }
 124                                         },
 125                                         rules: [
 126                                                 new OpenLayers.Rule({
 127                                                         filter: filter_point_sledrun,
 128                                                         symbolizer: {
 129                                                                 externalGraphic: img_path + '/marker_c_sledrun_${getCondition}nn.png',
 130                                                                 graphicWidth: 17,
 131                                                                 graphicHeight: 17,
 132                                                                 graphicXOffset: -8,
 133                                                                 graphicYOffset: -8,
 134                                                                 backgroundGraphic: img_path + '/marker_c_shadow.png',
 135                                                                 backgroundWidth: 23,
 136                                                                 backgroundHeight: 23,
 137                                                                 backgroundXOffset: -8,
 138                                                                 backgroundYOffset: -8,
 139                                                         }
 140                                                 }),
 141                                                 new OpenLayers.Rule({
 142                                                         elseFilter: true,
 143                                                         symbolizer: {
 144                                                                 externalGraphic: img_path + '/marker_p_${getSymbol}.png',
 145                                                                 graphicWidth: 20,
 146                                                                 graphicHeight: 34,
 147                                                                 graphicXOffset: -10,
 148                                                                 graphicYOffset: -33,
 149                                                         }
 150                                                 })
 151                                         ]
 152                                 }),
 153                         highlight: new OpenLayers.Style({
 154                                         label: "${getTitle}",
 155                                         labelOutlineColor: "white",
 156                                         fontWeight: "bold"
 157                                 }, {
 158                                         context: {
 159                                                 getCondition: get_sledrun_condition,
 160                                                 getTitle: function(feature) {
 161                                                         var title = '';
 162                                                         if (feature.attributes.type != 'point') {
 163                                                                 title = feature.attributes.type;
 164                                                                 title = title.charAt(0).toUpperCase() + title.slice(1); // First letter uppercase
 165                                                                 if (feature.attributes.name !== undefined) title += ': ';
 166                                                         }
 167                                                         if (feature.attributes.name !== undefined) title += feature.attributes.name;
 168                                                         return title;
 169                                                 }
 170                                         },
 171                                         rules: [
 172                                                 new OpenLayers.Rule({
 173                                                         filter: filter_point_sledrun,
 174                                                         symbolizer: {
 175                                                                 label: "${name}",
 176                                                                 labelYOffset: 14,
 177                                                                 externalGraphic: img_path + '/marker_c_sledrun_${getCondition}nh.png'
 178                                                         }
 179                                                 }),
 180                                                 new OpenLayers.Rule({
 181                                                         elseFilter: true,
 182                                                         symbolizer: {
 183                                                                 labelYOffset: 40
 184                                                         }
 185                                                 })
 186                                         ]
 187                                 }),
 188                         select: new OpenLayers.Style({
 189                                         fillOpacity: 1.
 190                                 }, {
 191                                         context: {
 192                                                 getCondition: get_sledrun_condition,
 193                                         },
 194                                         rules: [
 195                                                 new OpenLayers.Rule({
 196                                                         filter: filter_point_sledrun,
 197                                                         symbolizer: {
 198                                                                 externalGraphic: img_path + '/marker_c_sledrun_${getCondition}nh.png',
 199                                                                 backgroundGraphic: false,
 200                                                                 graphicXOffset: -6,
 201                                                                 graphicYOffset: -6
 202                                                         }
 203                                                 }),
 204                                                 new OpenLayers.Rule({
 205                                                         elseFilter: true
 206                                                 })
 207                                         ]
 208                                 })
 209                 }),
 210                 rendererOptions: {yOrdering: true}
 211         });
 212
 213
 214         // map itself
 215         // ----------
 216         var lon = json_js.properties.lon;
 217         var lat = json_js.properties.lat;
 218         var zoom = json_js.properties.zoom;
 219         var width = json_js.properties.width;
 220         var height = json_js.properties.height;
 221         if (zoom === undefined) zoom = 10; // default zoom
 222         if (width === undefined) width = '100%'; // default width
 223         if (height === undefined) height = 450;  // default: 450 pixel
 224         jq_map.width(width);
 225         jq_map.height(height);
 226         var map = new OpenLayers.Map(jq_map.context, {
 227                 projection: EPSG3857,
 228                 displayProjection: EPSG4326,
 229                 units: "m",
 230                 theme: null,
 231                 layers: [layer_map, layer_path, layer_point],
 232                 center: new OpenLayers.LonLat(lon, lat).transform(EPSG4326, EPSG3857),
 233                 zoom: zoom
 234         });
 235
 236
 237         // add features
 238         // if this would be done before the layer is added to the map, the features are not added
 239         layer_path.addFeatures(features_path);
 240         layer_point.addFeatures(features_point);
 241
 242         // disable mouse wheel zoom
 243         var navigation_control = map.getControlsByClass('OpenLayers.Control.Navigation')[0];
 244         navigation_control.disableZoomWheel();
 245
 246         // layer switcher
 247         // map.addControl(new OpenLayers.Control.LayerSwitcher());
 248
 249         // print sledrun name when mouse moves over it
 250         map.addControl(new OpenLayers.Control.SelectFeature(layer_point, {
 251                 hover: true,
 252                 highlightOnly: true,
 253                 autoActivate: true,
 254                 renderIntent: "highlight"
 255         }));
 256
 257         // show popup when user clicks on a sledrun icon
 258         map.addControl(new OpenLayers.Control.SelectFeature(layer_point, {
 259                 autoActivate: true,
 260                 toggle: true,
 261                 onSelect: function(feature) {
 262                         var attr = feature.attributes;
 263                         var popup_div = createElement('div');
 264
 265                         // name
 266                         if (attr.name !== undefined && (attr.wiki !== undefined || attr.thumb_url !== undefined)) {
 267                                 var h2 = appendElement(popup_div, 'h2');
 268                                 if (attr.wiki === undefined) h2.text(attr.name);
 269                                 else appendElement(h2, 'a', {href: attr.wiki}).text(attr.name);
 270                         }
 271
 272                         // sledrun information
 273                         if (attr.type == 'sledrun') {
 274                                 var p = appendElement(popup_div, 'p').text('Rodelbahnzustand').append(createElement('br'));
 275                                 if (attr.condition !== undefined) {
 276                                         var condition_text = {1: 'Sehr gut', 2: 'Gut', 3: 'Mittelmäßig', 4: 'Schlecht', 5: 'Geht nicht'};
 277                                         var year_month_day = attr.date_report.split('-');
 278                                         p.append(createElement('a', {href: attr.wiki + '#Eintr.C3.A4ge'}).text(condition_text[attr.condition]), ' ');
 279                                         p.append(createElement('small').text(year_month_day[2] + '.' + year_month_day[1] + '.'), ' ');
 280                                         p.append(createElement('em').append(createElement('a', {href: attr.wiki + '#Eintragen'}).text('Neu')));
 281                                 } else {
 282                                         p.append(createElement('em').append(createElement('a', {href: attr.wiki + '#Eintragen'}).text('Bitte eintragen')));
 283                                 }
 284                         }
 285
 286                         // wiki link
 287                         if (attr.wiki !== undefined) {
 288                                 var a = appendElement(appendElement(popup_div, 'p'), 'a', {href: attr.wiki});
 289                                 var detail_text = 'Details';
 290                                 if (attr.type == 'sledrun') detail_text += ' zur Rodelbahn';
 291                                 if (attr.type == 'gasthaus') detail_text += ' zum Gasthaus';
 292                                 if (attr.thumb_url === undefined) a.text(detail_text);
 293                                 else a.append(createElement('img', {src: attr.thumb_url, alt: detail_text, title: detail_text}));
 294                         }
 295
 296                         // no popup if we don't have anything to say
 297                         if (popup_div.children().length == 0) return;
 298
 299                         // Open popup
 300                         var selectFeatureControl = this;
 301                         var popup = new OpenLayers.Popup.FramedCloud('sledruninfopopup_' + attr.wiki,
 302                         feature.geometry.getBounds().getCenterLonLat(),
 303                         null,
 304                         popup_div.html(),
 305                         null, true, function(event) {
 306                                 // onPopupClose
 307                                 selectFeatureControl.unselectAll();
 308                         });
 309                         feature.popup = popup;
 310                         map.addPopup(popup);
 311                 },
 312                 onUnselect: function(feature) {
 313                         if (feature.popup === null) return;
 314
 315                         // Close popup
 316                         map.removePopup(feature.popup);
 317                         feature.popup.destroy();
 318                         feature.popup = null;
 319                 }
 320         }));
 321 }
 322
 323
 324 function init_wrmaps() {
 325         var jq_maps = $('.wrmap'); // all wrmap <div> elements
 326         jq_maps.each(init_wrmap);
 327 }
 328
 329
 330 $(document).ready(init_wrmaps);
 331