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Diffstat (limited to 'static/base.js')
| -rw-r--r-- | static/base.js | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/static/base.js b/static/base.js new file mode 100644 index 0000000..19b3945 --- /dev/null +++ b/static/base.js @@ -0,0 +1,32 @@ + +function saveExtent() { + /* save the current extent in a cookie */ + if(!map) return; + document.cookie = "MAP_EXTENT=" + map.getExtent().toArray().join('_') + + ';path="/"'; +} + +function getExtent() { + /* get the current extent from a cookie */ + var cookies = document.cookie.split(';'); + var map_extent; + for (i in cookies){ + var items = cookies[i].split('='); + if (items[0] == 'MAP_EXTENT') map_extent = items[1].split('_'); + } + return map_extent; +} + +function zoomToCurrentExtent(map){ + /* zoom to current extent */ + var current_extent = getExtent(); + if (OpenLayers && current_extent && current_extent.length == 4){ + extent = new OpenLayers.Bounds(current_extent[0], current_extent[1], + current_extent[2], current_extent[3]); + map.zoomToExtent(extent, true); + return true; + } + else{ + return; + } +}
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