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Contents of /trunk/web/www/routino/maploader.js
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Sat Aug 31 14:30:44 2019 UTC (5 years, 6 months ago) by amb
File MIME type: application/javascript
File size: 1781 byte(s)
Sat Aug 31 14:30:44 2019 UTC (5 years, 6 months ago) by amb
File MIME type: application/javascript
File size: 1781 byte(s)
Add support for the latest version of OpenLayers (version 5.x) library as well as the older, incompatible, version.
| 1 | //////////////////////////////////////////////////////////////////////////////// |
| 2 | ///////////////////// Map loader (OpenLayers or Leaflet) /////////////////////// |
| 3 | //////////////////////////////////////////////////////////////////////////////// |
| 4 | |
| 5 | |
| 6 | function map_load(callbacks) |
| 7 | { |
| 8 | var pending = 1; |
| 9 | var head = document.getElementsByTagName("head")[0]; |
| 10 | |
| 11 | /* Call the callbacks when everything is loaded. */ |
| 12 | |
| 13 | function call_callbacks() |
| 14 | { |
| 15 | if(!--pending) |
| 16 | eval(callbacks); |
| 17 | } |
| 18 | |
| 19 | /* Javascript loader */ |
| 20 | |
| 21 | function load_js(url, urls) |
| 22 | { |
| 23 | var script = document.createElement("script"); |
| 24 | script.src = url; |
| 25 | script.type = "text/javascript"; |
| 26 | |
| 27 | pending++; |
| 28 | |
| 29 | if( urls === undefined ) |
| 30 | script.onload = call_callbacks; |
| 31 | else |
| 32 | script.onload = function() { load_js(urls); call_callbacks(); }; |
| 33 | |
| 34 | head.appendChild(script); |
| 35 | } |
| 36 | |
| 37 | /* CSS loader */ |
| 38 | |
| 39 | function load_css(url, urls) |
| 40 | { |
| 41 | var link = document.createElement("link"); |
| 42 | link.href = url; |
| 43 | link.type = "text/css"; |
| 44 | link.rel = "stylesheet"; |
| 45 | |
| 46 | head.appendChild(link); |
| 47 | |
| 48 | if( urls !== undefined ) |
| 49 | load_css(urls) |
| 50 | } |
| 51 | |
| 52 | /* Load the external library and local code */ |
| 53 | |
| 54 | if(mapprops.library == "leaflet") |
| 55 | { |
| 56 | load_css("../leaflet/leaflet.css"); |
| 57 | load_js ("../leaflet/leaflet.js"); |
| 58 | |
| 59 | load_js(location.pathname.replace(/\.html.*/,".leaflet.js")); |
| 60 | } |
| 61 | else if(mapprops.library == "openlayers") |
| 62 | { |
| 63 | load_css("../openlayers/ol.css", "../openlayers/ol-layerswitcher.css"); |
| 64 | load_js ("../openlayers/ol.js", "../openlayers/ol-layerswitcher.js"); |
| 65 | |
| 66 | load_js(location.pathname.replace(/\.html.*/,".openlayers.js")); |
| 67 | } |
| 68 | else if(mapprops.library == "openlayers2") |
| 69 | { |
| 70 | load_js("../openlayers2/OpenLayers.js"); |
| 71 | |
| 72 | load_js(location.pathname.replace(/\.html.*/,".openlayers2.js")); |
| 73 | } |
| 74 | |
| 75 | call_callbacks(); |
| 76 | } |