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                 for (var attribute in attributes) {
  12                         element.attr(attribute, attributes[attribute]);
  13                 }
  14                 return element;
  15         }
  16
  17         function appendElement(parentElement, tagName, attributes={}) {
  18                 var element = createElement(tagName, attributes);
  19                 parentElement.append(element);
  20                 return element;
  21         }
  22
  23
  24         // extract geojson from map element and clear map element's content
  25         jq_map = $(jq_map);
  26         OpenLayers.ImgPath = jq_map.attr('data-img-path'); // e.g. "/mediawiki/extensions/wrmap/openlayers/img/"
  27         var json_string = jq_map.children().last().text();
  28         jq_map.empty(); // once parsed, remove geojson string from the map element.
  29         var format_json = new OpenLayers.Format.JSON();
  30         var json_js = format_json.read(json_string);
  31         var format_geojson = new OpenLayers.Format.GeoJSON();
  32         var features_all = format_geojson.read(json_js);
  33
  34         // extract, tranform and split features to layers
  35         var features_path = new Array();
  36         var features_point = new Array();
  37         for (var i = 0; i != features_all.length; ++i) {
  38                 var feature = features_all[i];
  39                 feature.geometry.transform(EPSG4326, EPSG3857);
  40                 if (feature.geometry instanceof OpenLayers.Geometry.Point) features_point.push(feature);
  41                 else features_path.push(feature);
  42         }
  43
  44
  45         // background layer
  46         // ----------------
  47         var layer_map = new OpenLayers.Layer.Google("Google Physical", {
  48                 type: google.maps.MapTypeId.TERRAIN
  49         });
  50
  51         // // Alternative: OSM map
  52         // var layer_map = new OpenLayers.Layer.OSM();
  53
  54         // // Alternative: Microsoft Bing Maps
  55         // var layer_map = new OpenLayers.Layer.Bing({
  56         //     type: "Road",
  57         //     key: "AgPH3SlIXAwajrJKf0FORQyhTqsP8KIlvtN6RKfvxe6fOB6q6-HFmg8EOFm7LSOA"});
  58
  59         // // Alternative: Dummy base layer
  60         // var layer_map = new OpenLayers.Layer.Vector("Base Layer", {
  61         //     isBaseLayer: true});
  62
  63
  64         // path layer
  65         // ----------
  66         var layer_path = new OpenLayers.Layer.Vector("Path", {
  67                 styleMap: new OpenLayers.StyleMap(new OpenLayers.Style({
  68                                 strokeColor: '${getStrokeColor}',
  69                                 strokeWidth: '${getStrokeWidth}'
  70                         }, {
  71                                 context: {
  72                                         getStrokeColor: function(feature) {
  73                                                 if (feature.attributes.strokeColor !== undefined) return feature.attributes.strokeColor;
  74                                                 if (feature.attributes.type == 'rodelbahn') return '#014e9a';
  75                                                 if (feature.attributes.type == 'gehweg') return '#e98401';
  76                                                 if (feature.attributes.type == 'alternative') return '#7f7fff';
  77                                                 if (feature.attributes.type == 'lift') return '#000000';
  78                                                 if (feature.attributes.type == 'anfahrt') return '#e1e100';
  79                                                 return '#ee9900';
  80                                         },
  81                                         getStrokeWidth: function(feature) {
  82                                                 if (feature.attributes.strokeWidth !== undefined) return feature.attributes.strokeWidth;
  83                                                 if (feature.attributes.type == 'lift' || feature.attributes.type == 'anfahrt') return 3;
  84                                                 return 6;
  85                                         }
  86                                 }
  87                         }))
  88         });
  89
  90
  91         // point layer
  92         // -----------
  93         var filter_point_sledrun = new OpenLayers.Filter.Comparison({
  94                 type: OpenLayers.Filter.Comparison.EQUAL_TO,
  95                 property: 'type',
  96                 value: 'sledrun'
  97         });
  98
  99         var layer_point = new OpenLayers.Layer.Vector("Point", {
 100                 styleMap: new OpenLayers.StyleMap({
 101                         'default': new OpenLayers.Style({
 102                                         graphicZIndex: 12,
 103                                         backgroundGraphicZIndex: 11,
 104                                 }, {
 105                                         context: {
 106                                                 // the following context functions should only be available in the rule that uses them,
 107                                                 // but the rule dependent contexts are ignored by OpenLayers (I think that's a bug)
 108                                                 getCondition: function(feature) {
 109                                                         if (feature.attributes.condition === undefined) return 0;
 110                                                         return feature.attributes.condition;
 111                                                 },
 112                                                 getSymbol: function(feature) {
 113                                                         var name = feature.attributes.type;
 114                                                         return name;
 115                                                 }
 116                                         },
 117                                         rules: [
 118                                                 new OpenLayers.Rule({
 119                                                         filter: filter_point_sledrun,
 120                                                         symbolizer: {
 121                                                                 externalGraphic: '/vorlagen/bahnzustand${getCondition}_0.png',
 122                                                                 graphicWidth: 17,
 123                                                                 graphicHeight: 17,
 124                                                                 graphicXOffset: -8,
 125                                                                 graphicYOffset: -8,
 126                                                                 backgroundGraphic: "/vorlagen/gmap_rodelbahn_c_s.png",
 127                                                                 backgroundWidth: 23,
 128                                                                 backgroundHeight: 23,
 129                                                                 backgroundXOffset: -8,
 130                                                                 backgroundYOffset: -8,
 131                                                         }
 132                                                 }),
 133                                                 new OpenLayers.Rule({
 134                                                         elseFilter: true,
 135                                                         symbolizer: {
 136                                                                 externalGraphic: '/vorlagen/gmap_${getSymbol}.png',
 137                                                                 graphicWidth: 20,
 138                                                                 graphicHeight: 34,
 139                                                                 graphicXOffset: -10,
 140                                                                 graphicYOffset: -33,
 141                                                         }
 142                                                 })
 143                                         ]
 144                                 }),
 145                         highlight: new OpenLayers.Style({
 146                                         label: "${getTitle}",
 147                                         labelOutlineColor: "white",
 148                                         fontWeight: "bold"
 149                                 }, {
 150                                         context: {
 151                                                 getTitle: function(feature) {
 152                                                         var title = '';
 153                                                         if (feature.attributes.type != 'point') {
 154                                                                 title = feature.attributes.type;
 155                                                                 title = title.charAt(0).toUpperCase() + title.slice(1); // First letter uppercase
 156                                                                 if (feature.attributes.name !== undefined) title += ': ';
 157                                                         }
 158                                                         if (feature.attributes.name !== undefined) title += feature.attributes.name;
 159                                                         return title;
 160                                                 }
 161                                         },
 162                                         rules: [
 163                                                 new OpenLayers.Rule({
 164                                                         filter: filter_point_sledrun,
 165                                                         symbolizer: {
 166                                                                 label: "${name}",
 167                                                                 labelYOffset: 14
 168                                                         }
 169                                                 }),
 170                                                 new OpenLayers.Rule({
 171                                                         elseFilter: true,
 172                                                         symbolizer: {
 173                                                                 labelYOffset: 40
 174                                                         }
 175                                                 })
 176                                         ]
 177                                 }),
 178                         select: new OpenLayers.Style({
 179                                         fillOpacity: 1.
 180                                 })
 181                 }),
 182                 rendererOptions: {yOrdering: true}
 183         });
 184
 185
 186         // map itself
 187         // ----------
 188         var lon = json_js.properties.lon;
 189         var lat = json_js.properties.lat;
 190         var zoom = json_js.properties.zoom;
 191         var width = json_js.properties.width;
 192         var height = json_js.properties.height;
 193         if (zoom === undefined) zoom = 10; // default zoom
 194         if (width === undefined) width = '100%'; // default width
 195         if (height === undefined) height = 450;  // default: 450 pixel
 196         jq_map.width(width);
 197         jq_map.height(height);
 198         var map = new OpenLayers.Map(jq_map.context, {
 199                 projection: EPSG3857,
 200                 displayProjection: EPSG4326,
 201                 units: "m",
 202                 theme: null,
 203                 layers: [layer_map, layer_path, layer_point],
 204                 center: new OpenLayers.LonLat(lon, lat).transform(EPSG4326, EPSG3857),
 205                 zoom: zoom
 206         });
 207
 208
 209         // add features
 210         // if this would be done before the layer is added to the map, the features are not added
 211         layer_path.addFeatures(features_path);
 212         layer_point.addFeatures(features_point);
 213
 214         // disable mouse wheel zoom
 215         var navigation_control = map.getControlsByClass('OpenLayers.Control.Navigation')[0];
 216         navigation_control.disableZoomWheel();
 217
 218         // layer switcher
 219         // map.addControl(new OpenLayers.Control.LayerSwitcher());
 220
 221         // print sledrun name when mouse moves over it
 222         map.addControl(new OpenLayers.Control.SelectFeature(layer_point, {
 223                 hover: true,
 224                 highlightOnly: true,
 225                 autoActivate: true,
 226                 renderIntent: "highlight"
 227         }));
 228
 229         // show popup when user clicks on a sledrun icon
 230         map.addControl(new OpenLayers.Control.SelectFeature(layer_point, {
 231                 autoActivate: true,
 232                 toggle: true,
 233                 onSelect: function(feature) {
 234                         var attr = feature.attributes;
 235                         var popup_div = createElement('div');
 236
 237                         // name
 238                         if (attr.name !== undefined && (attr.wiki !== undefined || attr.thumb_url !== undefined)) {
 239                                 var h2 = appendElement(popup_div, 'h2');
 240                                 if (attr.wiki === undefined) h2.text(attr.name);
 241                                 else appendElement(h2, 'a', {href: attr.wiki}).text(attr.name);
 242                         }
 243
 244                         // sledrun information
 245                         if (attr.type == 'sledrun') {
 246                                 var p = appendElement(popup_div, 'p').text('Rodelbahnzustand').append(createElement('br'));
 247                                 if (attr.condition !== undefined) {
 248                                         var condition_text = {1: 'Sehr gut', 2: 'Gut', 3: 'Mittelmäßig', 4: 'Schlecht', 5: 'Geht nicht'};
 249                                         var year_month_day = attr.date_report.split('-');
 250                                         p.append(createElement('a', {href: attr.wiki + '#Eintr.C3.A4ge'}).text(condition_text[attr.condition]), ' ');
 251                                         p.append(createElement('small').text(year_month_day[2] + '.' + year_month_day[1] + '.'), ' ');
 252                                         p.append(createElement('em').append(createElement('a', {href: attr.wiki + '#Eintragen'}).text('Neu')));
 253                                 } else {
 254                                         p.append(createElement('em').append(createElement('a', {href: attr.wiki + '#Eintragen'}).text('Bitte eintragen')));
 255                                 }
 256                         }
 257
 258                         // wiki link
 259                         if (attr.wiki !== undefined) {
 260                                 var a = appendElement(appendElement(popup_div, 'p'), 'a', {href: attr.wiki});
 261                                 var detail_text = 'Details';
 262                                 if (attr.type == 'sledrun') detail_text += ' zur Rodelbahn';
 263                                 if (attr.type == 'gasthaus') detail_text += ' zum Gasthaus';
 264                                 if (attr.thumb_url === undefined) a.text(detail_text);
 265                                 else a.append(createElement('img', {src: attr.thumb_url, alt: detail_text, title: detail_text}));
 266                         }
 267
 268                         // no popup if we don't have anything to say
 269                         if (popup_div.children().length == 0) return;
 270
 271                         // Open popup
 272                         var selectFeatureControl = this;
 273                         var popup = new OpenLayers.Popup.FramedCloud('sledruninfopopup_' + attr.wiki,
 274                         feature.geometry.getBounds().getCenterLonLat(),
 275                         null,
 276                         popup_div.html(),
 277                         null, true, function(event) {
 278                                 // onPopupClose
 279                                 selectFeatureControl.unselectAll();
 280                         });
 281                         feature.popup = popup;
 282                         map.addPopup(popup);
 283                 },
 284                 onUnselect: function(feature) {
 285                         if (feature.popup === null) return;
 286
 287                         // Close popup
 288                         map.removePopup(feature.popup);
 289                         feature.popup.destroy();
 290                         feature.popup = null;
 291                 }
 292         }));
 293 }
 294
 295
 296 function init_wrmaps() {
 297         var jq_maps = $('.wrmap'); // all wrmap <div> elements
 298         jq_maps.each(init_wrmap);
 299 }
 300
 301
 302 $(document).ready(init_wrmaps);
 303