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| Viewing file: Select action/file-type: /* Copyright (c) 2006-2010 by OpenLayers Contributors (see authors.txt for
* full list of contributors). Published under the Clear BSD license.
* See http://svn.openlayers.org/trunk/openlayers/license.txt for the
* full text of the license. */
/**
* @requires OpenLayers/Format/WMSCapabilities.js
* @requires OpenLayers/Format/XML.js
*/
/**
* Class: OpenLayers.Format.WMSCapabilities.v1
* Abstract class not to be instantiated directly. Creates
* the common parts for both WMS 1.1.X and WMS 1.3.X.
*
* Inherits from:
* - <OpenLayers.Format.XML>
*/
OpenLayers.Format.WMSCapabilities.v1 = OpenLayers.Class(
OpenLayers.Format.XML, {
/**
* Property: namespaces
* {Object} Mapping of namespace aliases to namespace URIs.
*/
namespaces: {
wms: "http://www.opengis.net/wms",
xlink: "http://www.w3.org/1999/xlink",
xsi: "http://www.w3.org/2001/XMLSchema-instance"
},
/**
* Property: defaultPrefix
*/
defaultPrefix: "wms",
/**
* Constructor: OpenLayers.Format.WMSCapabilities.v1
* Create an instance of one of the subclasses.
*
* Parameters:
* options - {Object} An optional object whose properties will be set on
* this instance.
*/
initialize: function(options) {
OpenLayers.Format.XML.prototype.initialize.apply(this, [options]);
},
/**
* APIMethod: read
* Read capabilities data from a string, and return a list of layers.
*
* Parameters:
* data - {String} or {DOMElement} data to read/parse.
*
* Returns:
* {Array} List of named layers.
*/
read: function(data) {
if(typeof data == "string") {
data = OpenLayers.Format.XML.prototype.read.apply(this, [data]);
}
if(data && data.nodeType == 9) {
data = data.documentElement;
}
var capabilities = {};
this.readNode(data, capabilities);
// postprocess the layer list
this.postProcessLayers(capabilities);
return capabilities;
},
/**
* Method: postProcessLayers
* Post process the layers, so that the nested layer structure is converted
* to a flat layer list with only named layers.
*
* Parameters:
* capabilities - {Object} The object (structure) returned by the parser with
* all the info from the GetCapabilities response.
*/
postProcessLayers: function(capabilities) {
if (capabilities.capability) {
capabilities.capability.layers = [];
var layers = capabilities.capability.nestedLayers;
for (var i=0, len = layers.length; i<len; ++i) {
var layer = layers[i];
this.processLayer(capabilities.capability, layer);
}
}
},
/**
* Method: processLayer
* Recursive submethod of postProcessLayers. This function will among
* others deal with property inheritance.
*
* Parameters:
* capability - {Object} The capability part of the capabilities object
* layer - {Object} The layer that needs processing
* parentLayer - {Object} The parent layer of the respective layer
*/
processLayer: function(capability, layer, parentLayer) {
if (layer.formats === undefined) {
layer.formats = capability.request.getmap.formats;
}
// deal with property inheritance
if(parentLayer) {
// add style
layer.styles = layer.styles.concat(parentLayer.styles);
var attributes = ["queryable",
"cascaded",
"fixedWidth",
"fixedHeight",
"opaque",
"noSubsets",
"llbbox",
"minScale",
"maxScale",
"attribution"];
var complexAttr = ["srs",
"bbox",
"dimensions",
"authorityURLs"];
var key;
for (var j=0; j<attributes.length; j++) {
key = attributes[j];
if (key in parentLayer) {
// only take parent value if not present (null or undefined)
if (layer[key] == null) {
layer[key] = parentLayer[key];
}
// if attribute isn't present, and we haven't
// inherited anything from a parent layer
// set to default value
if (layer[key] == null) {
var intAttr = ["cascaded", "fixedWidth", "fixedHeight"];
var boolAttr = ["queryable", "opaque", "noSubsets"];
if (OpenLayers.Util.indexOf(intAttr, key) != -1) {
layer[key] = 0;
}
if (OpenLayers.Util.indexOf(boolAttr, key) != -1) {
layer[key] = false;
}
}
}
}
for (var j=0; j<complexAttr.length; j++) {
key = complexAttr[j];
layer[key] = OpenLayers.Util.extend(
layer[key], parentLayer[key]);
}
}
// process sublayers
for (var i=0, len=layer.nestedLayers.length; i<len; i++) {
var childLayer = layer.nestedLayers[i];
this.processLayer(capability, childLayer, layer);
}
if (layer.name) {
capability.layers.push(layer);
}
},
/**
* Property: readers
* Contains public functions, grouped by namespace prefix, that will
* be applied when a namespaced node is found matching the function
* name. The function will be applied in the scope of this parser
* with two arguments: the node being read and a context object passed
* from the parent.
*/
readers: {
"wms": {
"Service": function(node, obj) {
obj.service = {};
this.readChildNodes(node, obj.service);
},
"Name": function(node, obj) {
obj.name = this.getChildValue(node);
},
"Title": function(node, obj) {
obj.title = this.getChildValue(node);
},
"Abstract": function(node, obj) {
obj["abstract"] = this.getChildValue(node);
},
"BoundingBox": function(node, obj) {
var bbox = {};
bbox.bbox = [
parseFloat(node.getAttribute("minx")),
parseFloat(node.getAttribute("miny")),
parseFloat(node.getAttribute("maxx")),
parseFloat(node.getAttribute("maxy"))
];
var res = {
x: parseFloat(node.getAttribute("resx")),
y: parseFloat(node.getAttribute("resy"))
};
if (! (isNaN(res.x) && isNaN(res.y))) {
bbox.res = res;
}
// return the bbox so that descendant classes can set the
// CRS and SRS and add it to the obj
return bbox;
},
"OnlineResource": function(node, obj) {
obj.href = this.getAttributeNS(node, this.namespaces.xlink,
"href");
},
"ContactInformation": function(node, obj) {
obj.contactInformation = {};
this.readChildNodes(node, obj.contactInformation);
},
"ContactPersonPrimary": function(node, obj) {
obj.personPrimary = {};
this.readChildNodes(node, obj.personPrimary);
},
"ContactPerson": function(node, obj) {
obj.person = this.getChildValue(node);
},
"ContactOrganization": function(node, obj) {
obj.organization = this.getChildValue(node);
},
"ContactPosition": function(node, obj) {
obj.position = this.getChildValue(node);
},
"ContactAddress": function(node, obj) {
obj.contactAddress = {};
this.readChildNodes(node, obj.contactAddress);
},
"AddressType": function(node, obj) {
obj.type = this.getChildValue(node);
},
"Address": function(node, obj) {
obj.address = this.getChildValue(node);
},
"City": function(node, obj) {
obj.city = this.getChildValue(node);
},
"StateOrProvince": function(node, obj) {
obj.stateOrProvince = this.getChildValue(node);
},
"PostCode": function(node, obj) {
obj.postcode = this.getChildValue(node);
},
"Country": function(node, obj) {
obj.country = this.getChildValue(node);
},
"ContactVoiceTelephone": function(node, obj) {
obj.phone = this.getChildValue(node);
},
"ContactFacsimileTelephone": function(node, obj) {
obj.fax = this.getChildValue(node);
},
"ContactElectronicMailAddress": function(node, obj) {
obj.email = this.getChildValue(node);
},
"Fees": function(node, obj) {
var fees = this.getChildValue(node);
if (fees && fees.toLowerCase() != "none") {
obj.fees = fees;
}
},
"AccessConstraints": function(node, obj) {
var constraints = this.getChildValue(node);
if (constraints && constraints.toLowerCase() != "none") {
obj.accessConstraints = constraints;
}
},
"Capability": function(node, obj) {
obj.capability = {nestedLayers: []};
this.readChildNodes(node, obj.capability);
},
"Request": function(node, obj) {
obj.request = {};
this.readChildNodes(node, obj.request);
},
"GetCapabilities": function(node, obj) {
obj.getcapabilities = {formats: []};
this.readChildNodes(node, obj.getcapabilities);
},
"Format": function(node, obj) {
if (obj.formats instanceof Array) {
obj.formats.push(this.getChildValue(node));
} else {
obj.format = this.getChildValue(node);
}
},
"DCPType": function(node, obj) {
this.readChildNodes(node, obj);
},
"HTTP": function(node, obj) {
this.readChildNodes(node, obj);
},
"Get": function(node, obj) {
this.readChildNodes(node, obj);
},
"Post": function(node, obj) {
this.readChildNodes(node, obj);
},
"GetMap": function(node, obj) {
obj.getmap = {formats: []};
this.readChildNodes(node, obj.getmap);
},
"GetFeatureInfo": function(node, obj) {
obj.getfeatureinfo = {formats: []};
this.readChildNodes(node, obj.getfeatureinfo);
},
"Exception": function(node, obj) {
obj.exception = {formats: []};
this.readChildNodes(node, obj.exception);
},
"Layer": function(node, obj) {
var attrNode = node.getAttributeNode("queryable");
var queryable = (attrNode && attrNode.specified) ?
node.getAttribute("queryable") : null;
attrNode = node.getAttributeNode("cascaded");
var cascaded = (attrNode && attrNode.specified) ?
node.getAttribute("cascaded") : null;
attrNode = node.getAttributeNode("opaque");
var opaque = (attrNode && attrNode.specified) ?
node.getAttribute('opaque') : null;
var noSubsets = node.getAttribute('noSubsets');
var fixedWidth = node.getAttribute('fixedWidth');
var fixedHeight = node.getAttribute('fixedHeight');
var layer = {nestedLayers: [], styles: [], srs: {},
metadataURLs: [], bbox: {}, dimensions: {},
authorityURLs: {}, identifiers: {}, keywords: [],
queryable: (queryable && queryable !== "") ?
( queryable === "1" || queryable === "true" ) : null,
cascaded: (cascaded !== null) ? parseInt(cascaded) : null,
opaque: opaque ?
(opaque === "1" || opaque === "true" ) : null,
noSubsets: (noSubsets !== null) ?
( noSubsets === "1" || noSubsets === "true" ) : null,
fixedWidth: (fixedWidth != null) ?
parseInt(fixedWidth) : null,
fixedHeight: (fixedHeight != null) ?
parseInt(fixedHeight) : null
};
obj.nestedLayers.push(layer);
this.readChildNodes(node, layer);
if(layer.name) {
var parts = layer.name.split(":");
if(parts.length > 0) {
layer.prefix = parts[0];
}
}
},
"Attribution": function(node, obj) {
obj.attribution = {};
this.readChildNodes(node, obj.attribution);
},
"LogoURL": function(node, obj) {
obj.logo = {
width: node.getAttribute("width"),
height: node.getAttribute("height")
};
this.readChildNodes(node, obj.logo);
},
"Style": function(node, obj) {
var style = {};
obj.styles.push(style);
this.readChildNodes(node, style);
},
"LegendURL": function(node, obj) {
var legend = {
width: node.getAttribute("width"),
height: node.getAttribute("height")
};
obj.legend = legend;
this.readChildNodes(node, legend);
},
"MetadataURL": function(node, obj) {
var metadataURL = {type: node.getAttribute("type")};
obj.metadataURLs.push(metadataURL);
this.readChildNodes(node, metadataURL);
},
"DataURL": function(node, obj) {
obj.dataURL = {};
this.readChildNodes(node, obj.dataURL);
},
"FeatureListURL": function(node, obj) {
obj.featureListURL = {};
this.readChildNodes(node, obj.featureListURL);
},
"AuthorityURL": function(node, obj) {
var name = node.getAttribute("name");
var authority = {};
this.readChildNodes(node, authority);
obj.authorityURLs[name] = authority.href;
},
"Identifier": function(node, obj) {
var authority = node.getAttribute("authority");
obj.identifiers[authority] = this.getChildValue(node);
},
"KeywordList": function(node, obj) {
this.readChildNodes(node, obj);
},
"SRS": function(node, obj) {
obj.srs[this.getChildValue(node)] = true;
}
}
},
CLASS_NAME: "OpenLayers.Format.WMSCapabilities.v1"
});
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