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authorChris Schlaeger <chris@linux.com>2014-08-12 21:56:44 +0200
committerChris Schlaeger <chris@linux.com>2014-08-12 21:56:44 +0200
commitea346a785dc1b3f7c156f6fc33da634e1f1a627b (patch)
treeaf67530553d20b6e82ad60fd79593e9c4abf5565 /misc/openlayers/examples/cql-format.js
parent59741cd535c47f25971bf8c32b25da25ceadc6d5 (diff)
downloadpostrunner-ea346a785dc1b3f7c156f6fc33da634e1f1a627b.zip
Adding jquery, flot and openlayers to be included with the GEM.v0.0.4
Diffstat (limited to 'misc/openlayers/examples/cql-format.js')
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diff --git a/misc/openlayers/examples/cql-format.js b/misc/openlayers/examples/cql-format.js
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+
+// use a CQL parser for easy filter creation
+var format = new OpenLayers.Format.CQL();
+
+// this rule will get a filter from the CQL text in the form
+var rule = new OpenLayers.Rule({
+ // We could also set a filter here. E.g.
+ // filter: format.read("STATE_ABBR >= 'B' AND STATE_ABBR <= 'O'"),
+ symbolizer: {
+ fillColor: "#ff0000",
+ strokeColor: "#ffcccc",
+ fillOpacity: "0.5"
+ }
+});
+
+var states = new OpenLayers.Layer.Vector("States", {
+ styleMap: new OpenLayers.StyleMap({
+ "default": new OpenLayers.Style(null, {rules: [rule]})
+ })
+});
+
+var map = new OpenLayers.Map({
+ div: "map",
+ layers: [
+ new OpenLayers.Layer.WMS(
+ "OpenLayers WMS",
+ "http://maps.opengeo.org/geowebcache/service/wms",
+ {layers: "openstreetmap", format: "image/png"}
+ ),
+ states
+ ],
+ center: new OpenLayers.LonLat(-101, 39),
+ zoom: 3
+});
+
+// called when features are fetched
+function loadFeatures(data) {
+ var features = new OpenLayers.Format.GeoJSON().read(data);
+ states.addFeatures(features);
+}
+
+// update filter and redraw when form is submitted
+var cql = document.getElementById("cql");
+var output = document.getElementById("output");
+function updateFilter() {
+ var filter;
+ try {
+ filter = format.read(cql.value);
+ } catch (err) {
+ output.value = err.message;
+ }
+ if (filter) {
+ output.value = "";
+ rule.filter = filter;
+ states.redraw();
+ }
+ return false;
+}
+updateFilter();
+var form = document.getElementById("cql_form");
+form.onsubmit = updateFilter;