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Add ExtendedData support to KML. r=tschaub, patch mine + his comments,

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thx to rdewit for initial help/pointers, (Closes #1955)


git-svn-id: http://svn.openlayers.org/trunk/openlayers@9089 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
crschmidt
2009-03-18 18:15:47 +00:00
parent baf260c6f1
commit c6a7dd235d
2 changed files with 86 additions and 0 deletions
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33
lib/OpenLayers/Format/KML.js
View File

@@ -840,9 +840,17 @@ OpenLayers.Format.KML = OpenLayers.Class(OpenLayers.Format.XML, {
*/
parseAttributes: function(node) {
var attributes = {};
// Extended Data is parsed first.
var edNodes = node.getElementsByTagName("ExtendedData");
if (edNodes.length) {
attributes = this.parseExtendedData(edNodes[0]);
}
// assume attribute nodes are type 1 children with a type 3 or 4 child
var child, grandchildren, grandchild;
var children = node.childNodes;
for(var i=0, len=children.length; i<len; ++i) {
child = children[i];
if(child.nodeType == 1) {
@@ -874,6 +882,31 @@ OpenLayers.Format.KML = OpenLayers.Class(OpenLayers.Format.XML, {
return attributes;
},
/**
* Method: parseExtendedData
* Parse ExtendedData from KML. No support for schemas/datatypes.
* See http://code.google.com/apis/kml/documentation/kmlreference.html#extendeddata
* for more information on extendeddata.
*/
parseExtendedData: function(node) {
var attributes = {};
var dataNodes = node.getElementsByTagName("Data");
for (var i = 0, len = dataNodes.length; i < len; i++) {
var data = dataNodes[i];
var key = data.getAttribute("name");
var ed = {};
var valueNode = data.getElementsByTagName("value");
if (valueNode.length) {
ed['value'] = this.concatChildValues(valueNode[0]);
}
var nameNode = data.getElementsByTagName("displayName");
if (nameNode.length) {
ed['displayName'] = this.concatChildValues(nameNode[0]);
}
attributes[key] = ed;
}
return attributes;
},
/**
* Method: parseProperty

53
tests/Format/KML.html
View File

@@ -152,9 +152,62 @@
gotStyle.t = false;
t.ok(style.t, "getStyle returns copy of style rather than reference");
}
function test_Format_KML_extendedData(t) {
t.plan(2);
var f = new OpenLayers.Format.KML();
var features = f.read(OpenLayers.Util.getElement("kml_extendeddata").value);
t.eq(features[0].attributes.all_bridges.value, "3030", "read value from extendeddata correctly.");
t.eq(features[0].attributes.all_bridges.displayName, "all bridges", "read displayName from extendeddata correctly.");
}
</script>
</head>
<body>
<textarea id="kml_extendeddata" style="display:none">
<kml xmlns="http://earth.google.com/kml/2.2">
<Document>
<Placemark>
<styleUrl>#default</styleUrl>
<ExtendedData>
<Data name='all_bridges'>
<displayName><![CDATA[all bridges]]></displayName>
<value><![CDATA[3030]]></value>
</Data>
<Data name='latitude'>
<displayName><![CDATA[latitude]]></displayName>
<value><![CDATA[43]]></value>
</Data>
<Data name='longitude'>
<displayName><![CDATA[longitude]]></displayName>
<value><![CDATA[-107.55]]></value>
</Data>
<Data name='functionally_obsolete__percent'>
<displayName><![CDATA[functionally obsolete, percent]]></displayName>
<value><![CDATA[8]]></value>
</Data>
<Data name='structurally_deficient__percent'>
<displayName><![CDATA[structurally deficient, percent]]></displayName>
<value><![CDATA[13]]></value>
</Data>
<Data name='state'>
<displayName><![CDATA[state]]></displayName>
<value><![CDATA[Wyoming]]></value>
</Data>
</ExtendedData>
<Point>
<coordinates>-107.55,43.0</coordinates>
</Point>
</Placemark>
</Document>
</kml>
</textarea>
</body>
</html>