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/* Copyright (c) 2006-2013 by OpenLayers Contributors (see authors.txt for
* full list of contributors). Published under the 2-clause BSD license.
* See license.txt in the OpenLayers distribution or repository for the
* full text of the license. */
/**
* @requires OpenLayers/Format/WMC.js
* @requires OpenLayers/Format/XML.js
*/
/**
* Class: OpenLayers.Format.WMC.v1
* Superclass for WMC version 1 parsers.
*
* Inherits from:
* - <OpenLayers.Format.XML>
*/
OpenLayers.Format.WMC.v1 = OpenLayers.Class(OpenLayers.Format.XML, {
/**
* Property: namespaces
* {Object} Mapping of namespace aliases to namespace URIs.
*/
namespaces: {
ol: "http://openlayers.org/context",
wmc: "http://www.opengis.net/context",
sld: "http://www.opengis.net/sld",
xlink: "http://www.w3.org/1999/xlink",
xsi: "http://www.w3.org/2001/XMLSchema-instance"
},
/**
* Property: schemaLocation
* {String} Schema location for a particular minor version.
*/
schemaLocation: "",
/**
* Method: getNamespacePrefix
* Get the namespace prefix for a given uri from the <namespaces> object.
*
* Returns:
* {String} A namespace prefix or null if none found.
*/
getNamespacePrefix: function(uri) {
var prefix = null;
if(uri == null) {
prefix = this.namespaces[this.defaultPrefix];
} else {
for(prefix in this.namespaces) {
if(this.namespaces[prefix] == uri) {
break;
}
}
}
return prefix;
},
/**
* Property: defaultPrefix
*/
defaultPrefix: "wmc",
/**
* Property: rootPrefix
* {String} Prefix on the root node that maps to the context namespace URI.
*/
rootPrefix: null,
/**
* Property: defaultStyleName
* {String} Style name used if layer has no style param. Default is "".
*/
defaultStyleName: "",
/**
* Property: defaultStyleTitle
* {String} Default style title. Default is "Default".
*/
defaultStyleTitle: "Default",
/**
* Constructor: OpenLayers.Format.WMC.v1
* Instances of this class are not created directly. Use the
* <OpenLayers.Format.WMC> constructor instead.
*
* 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]);
},
/**
* Method: 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]);
}
var root = data.documentElement;
this.rootPrefix = root.prefix;
var context = {
version: root.getAttribute("version")
};
this.runChildNodes(context, root);
return context;
},
/**
* Method: runChildNodes
*/
runChildNodes: function(obj, node) {
var children = node.childNodes;
var childNode, processor, prefix, local;
for(var i=0, len=children.length; i<len; ++i) {
childNode = children[i];
if(childNode.nodeType == 1) {
prefix = this.getNamespacePrefix(childNode.namespaceURI);
local = childNode.nodeName.split(":").pop();
processor = this["read_" + prefix + "_" + local];
if(processor) {
processor.apply(this, [obj, childNode]);
}
}
}
},
/**
* Method: read_wmc_General
*/
read_wmc_General: function(context, node) {
this.runChildNodes(context, node);
},
/**
* Method: read_wmc_BoundingBox
*/
read_wmc_BoundingBox: function(context, node) {
context.projection = node.getAttribute("SRS");
context.bounds = new OpenLayers.Bounds(
node.getAttribute("minx"), node.getAttribute("miny"),
node.getAttribute("maxx"), node.getAttribute("maxy")
);
},
/**
* Method: read_wmc_LayerList
*/
read_wmc_LayerList: function(context, node) {
// layersContext is an array containing info for each layer
context.layersContext = [];
this.runChildNodes(context, node);
},
/**
* Method: read_wmc_Layer
*/
read_wmc_Layer: function(context, node) {
var layerContext = {
visibility: (node.getAttribute("hidden") != "1"),
queryable: (node.getAttribute("queryable") == "1"),
formats: [],
styles: [],
metadata: {}
};
this.runChildNodes(layerContext, node);
// set properties common to multiple objects on layer options/params
context.layersContext.push(layerContext);
},
/**
* Method: read_wmc_Extension
*/
read_wmc_Extension: function(obj, node) {
this.runChildNodes(obj, node);
},
/**
* Method: read_ol_units
*/
read_ol_units: function(layerContext, node) {
layerContext.units = this.getChildValue(node);
},
/**
* Method: read_ol_maxExtent
*/
read_ol_maxExtent: function(obj, node) {
var bounds = new OpenLayers.Bounds(
node.getAttribute("minx"), node.getAttribute("miny"),
node.getAttribute("maxx"), node.getAttribute("maxy")
);
obj.maxExtent = bounds;
},
/**
* Method: read_ol_transparent
*/
read_ol_transparent: function(layerContext, node) {
layerContext.transparent = this.getChildValue(node);
},
/**
* Method: read_ol_numZoomLevels
*/
read_ol_numZoomLevels: function(layerContext, node) {
layerContext.numZoomLevels = parseInt(this.getChildValue(node));
},
/**
* Method: read_ol_opacity
*/
read_ol_opacity: function(layerContext, node) {
layerContext.opacity = parseFloat(this.getChildValue(node));
},
/**
* Method: read_ol_singleTile
*/
read_ol_singleTile: function(layerContext, node) {
layerContext.singleTile = (this.getChildValue(node) == "true");
},
/**
* Method: read_ol_tileSize
*/
read_ol_tileSize: function(layerContext, node) {
var obj = {"width": node.getAttribute("width"), "height": node.getAttribute("height")};
layerContext.tileSize = obj;
},
/**
* Method: read_ol_isBaseLayer
*/
read_ol_isBaseLayer: function(layerContext, node) {
layerContext.isBaseLayer = (this.getChildValue(node) == "true");
},
/**
* Method: read_ol_displayInLayerSwitcher
*/
read_ol_displayInLayerSwitcher: function(layerContext, node) {
layerContext.displayInLayerSwitcher = (this.getChildValue(node) == "true");
},
/**
* Method: read_wmc_Server
*/
read_wmc_Server: function(layerContext, node) {
layerContext.version = node.getAttribute("version");
layerContext.url = this.getOnlineResource_href(node);
layerContext.metadata.servertitle = node.getAttribute("title");
},
/**
* Method: read_wmc_FormatList
*/
read_wmc_FormatList: function(layerContext, node) {
this.runChildNodes(layerContext, node);
},
/**
* Method: read_wmc_Format
*/
read_wmc_Format: function(layerContext, node) {
var format = {
value: this.getChildValue(node)
};
if(node.getAttribute("current") == "1") {
format.current = true;
}
layerContext.formats.push(format);
},
/**
* Method: read_wmc_StyleList
*/
read_wmc_StyleList: function(layerContext, node) {
this.runChildNodes(layerContext, node);
},
/**
* Method: read_wmc_Style
*/
read_wmc_Style: function(layerContext, node) {
var style = {};
this.runChildNodes(style, node);
if(node.getAttribute("current") == "1") {
style.current = true;
}
layerContext.styles.push(style);
},
/**
* Method: read_wmc_SLD
*/
read_wmc_SLD: function(style, node) {
this.runChildNodes(style, node);
// style either comes back with an href or a body property
},
/**
* Method: read_sld_StyledLayerDescriptor
*/
read_sld_StyledLayerDescriptor: function(sld, node) {
var xml = OpenLayers.Format.XML.prototype.write.apply(this, [node]);
sld.body = xml;
},
/**
* Method: read_sld_FeatureTypeStyle
*/
read_sld_FeatureTypeStyle: function(sld, node) {
var xml = OpenLayers.Format.XML.prototype.write.apply(this, [node]);
sld.body = xml;
},
/**
* Method: read_wmc_OnlineResource
*/
read_wmc_OnlineResource: function(obj, node) {
obj.href = this.getAttributeNS(
node, this.namespaces.xlink, "href"
);
},
/**
* Method: read_wmc_Name
*/
read_wmc_Name: function(obj, node) {
var name = this.getChildValue(node);
if(name) {
obj.name = name;
}
},
/**
* Method: read_wmc_Title
*/
read_wmc_Title: function(obj, node) {
var title = this.getChildValue(node);
if(title) {
obj.title = title;
}
},
/**
* Method: read_wmc_MetadataURL
*/
read_wmc_MetadataURL: function(layerContext, node) {
layerContext.metadataURL = this.getOnlineResource_href(node);
},
/**
* Method: read_wmc_KeywordList
*/
read_wmc_KeywordList: function(context, node) {
context.keywords = [];
this.runChildNodes(context.keywords, node);
},
/**
* Method: read_wmc_Keyword
*/
read_wmc_Keyword: function(keywords, node) {
keywords.push(this.getChildValue(node));
},
/**
* Method: read_wmc_Abstract
*/
read_wmc_Abstract: function(obj, node) {
var abst = this.getChildValue(node);
if(abst) {
obj["abstract"] = abst;
}
},
/**
* Method: read_wmc_LogoURL
*/
read_wmc_LogoURL: function(context, node) {
context.logo = {
width: node.getAttribute("width"),
height: node.getAttribute("height"),
format: node.getAttribute("format"),
href: this.getOnlineResource_href(node)
};
},
/**
* Method: read_wmc_DescriptionURL
*/
read_wmc_DescriptionURL: function(context, node) {
context.descriptionURL = this.getOnlineResource_href(node);
},
/**
* Method: read_wmc_ContactInformation
*/
read_wmc_ContactInformation: function(obj, node) {
var contact = {};
this.runChildNodes(contact, node);
obj.contactInformation = contact;
},
/**
* Method: read_wmc_ContactPersonPrimary
*/
read_wmc_ContactPersonPrimary: function(contact, node) {
var personPrimary = {};
this.runChildNodes(personPrimary, node);
contact.personPrimary = personPrimary;
},
/**
* Method: read_wmc_ContactPerson
*/
read_wmc_ContactPerson: function(primaryPerson, node) {
var person = this.getChildValue(node);
if (person) {
primaryPerson.person = person;
}
},
/**
* Method: read_wmc_ContactOrganization
*/
read_wmc_ContactOrganization: function(primaryPerson, node) {
var organization = this.getChildValue(node);
if (organization) {
primaryPerson.organization = organization;
}
},
/**
* Method: read_wmc_ContactPosition
*/
read_wmc_ContactPosition: function(contact, node) {
var position = this.getChildValue(node);
if (position) {
contact.position = position;
}
},
/**
* Method: read_wmc_ContactAddress
*/
read_wmc_ContactAddress: function(contact, node) {
var contactAddress = {};
this.runChildNodes(contactAddress, node);
contact.contactAddress = contactAddress;
},
/**
* Method: read_wmc_AddressType
*/
read_wmc_AddressType: function(contactAddress, node) {
var type = this.getChildValue(node);
if (type) {
contactAddress.type = type;
}
},
/**
* Method: read_wmc_Address
*/
read_wmc_Address: function(contactAddress, node) {
var address = this.getChildValue(node);
if (address) {
contactAddress.address = address;
}
},
/**
* Method: read_wmc_City
*/
read_wmc_City: function(contactAddress, node) {
var city = this.getChildValue(node);
if (city) {
contactAddress.city = city;
}
},
/**
* Method: read_wmc_StateOrProvince
*/
read_wmc_StateOrProvince: function(contactAddress, node) {
var stateOrProvince = this.getChildValue(node);
if (stateOrProvince) {
contactAddress.stateOrProvince = stateOrProvince;
}
},
/**
* Method: read_wmc_PostCode
*/
read_wmc_PostCode: function(contactAddress, node) {
var postcode = this.getChildValue(node);
if (postcode) {
contactAddress.postcode = postcode;
}
},
/**
* Method: read_wmc_Country
*/
read_wmc_Country: function(contactAddress, node) {
var country = this.getChildValue(node);
if (country) {
contactAddress.country = country;
}
},
/**
* Method: read_wmc_ContactVoiceTelephone
*/
read_wmc_ContactVoiceTelephone: function(contact, node) {
var phone = this.getChildValue(node);
if (phone) {
contact.phone = phone;
}
},
/**
* Method: read_wmc_ContactFacsimileTelephone
*/
read_wmc_ContactFacsimileTelephone: function(contact, node) {
var fax = this.getChildValue(node);
if (fax) {
contact.fax = fax;
}
},
/**
* Method: read_wmc_ContactElectronicMailAddress
*/
read_wmc_ContactElectronicMailAddress: function(contact, node) {
var email = this.getChildValue(node);
if (email) {
contact.email = email;
}
},
/**
* Method: read_wmc_DataURL
*/
read_wmc_DataURL: function(layerContext, node) {
layerContext.dataURL = this.getOnlineResource_href(node);
},
/**
* Method: read_wmc_LegendURL
*/
read_wmc_LegendURL: function(style, node) {
var legend = {
width: node.getAttribute('width'),
height: node.getAttribute('height'),
format: node.getAttribute('format'),
href: this.getOnlineResource_href(node)
};
style.legend = legend;
},
/**
* Method: read_wmc_DimensionList
*/
read_wmc_DimensionList: function(layerContext, node) {
layerContext.dimensions = {};
this.runChildNodes(layerContext.dimensions, node);
},
/**
* Method: read_wmc_Dimension
*/
read_wmc_Dimension: function(dimensions, node) {
var name = node.getAttribute("name").toLowerCase();
var dim = {
name: name,
units: node.getAttribute("units") || "",
unitSymbol: node.getAttribute("unitSymbol") || "",
userValue: node.getAttribute("userValue") || "",
nearestValue: node.getAttribute("nearestValue") === "1",
multipleValues: node.getAttribute("multipleValues") === "1",
current: node.getAttribute("current") === "1",
"default": node.getAttribute("default") || ""
};
var values = this.getChildValue(node);
dim.values = values.split(",");
dimensions[dim.name] = dim;
},
/**
* Method: write
*
* Parameters:
* context - {Object} An object representing the map context.
* options - {Object} Optional object.
*
* Returns:
* {String} A WMC document string.
*/
write: function(context, options) {
var root = this.createElementDefaultNS("ViewContext");
this.setAttributes(root, {
version: this.VERSION,
id: (options && typeof options.id == "string") ?
options.id :
OpenLayers.Util.createUniqueID("OpenLayers_Context_")
});
// add schemaLocation attribute
this.setAttributeNS(
root, this.namespaces.xsi,
"xsi:schemaLocation", this.schemaLocation
);
// required General element
root.appendChild(this.write_wmc_General(context));
// required LayerList element
root.appendChild(this.write_wmc_LayerList(context));
return OpenLayers.Format.XML.prototype.write.apply(this, [root]);
},
/**
* Method: createElementDefaultNS
* Shorthand for createElementNS with namespace from <defaultPrefix>.
* Can optionally be used to set attributes and a text child value.
*
* Parameters:
* name - {String} The qualified node name.
* childValue - {String} Optional value for text child node.
* attributes - {Object} Optional object representing attributes.
*
* Returns:
* {Element} An element node.
*/
createElementDefaultNS: function(name, childValue, attributes) {
var node = this.createElementNS(
this.namespaces[this.defaultPrefix],
name
);
if(childValue) {
node.appendChild(this.createTextNode(childValue));
}
if(attributes) {
this.setAttributes(node, attributes);
}
return node;
},
/**
* Method: setAttributes
* Set multiple attributes given key value pairs from an object.
*
* Parameters:
* node - {Element} An element node.
* obj - {Object} An object whose properties represent attribute names and
* values represent attribute values.
*/
setAttributes: function(node, obj) {
var value;
for(var name in obj) {
value = obj[name].toString();
if(value.match(/[A-Z]/)) {
// safari lowercases attributes with setAttribute
this.setAttributeNS(node, null, name, value);
} else {
node.setAttribute(name, value);
}
}
},
/**
* Method: write_wmc_General
* Create a General node given an context object.
*
* Parameters:
* context - {Object} Context object.
*
* Returns:
* {Element} A WMC General element node.
*/
write_wmc_General: function(context) {
var node = this.createElementDefaultNS("General");
// optional Window element
if(context.size) {
node.appendChild(this.createElementDefaultNS(
"Window", null,
{
width: context.size.w,
height: context.size.h
}
));
}
// required BoundingBox element
var bounds = context.bounds;
node.appendChild(this.createElementDefaultNS(
"BoundingBox", null,
{
minx: bounds.left.toPrecision(18),
miny: bounds.bottom.toPrecision(18),
maxx: bounds.right.toPrecision(18),
maxy: bounds.top.toPrecision(18),
SRS: context.projection
}
));
// required Title element
node.appendChild(this.createElementDefaultNS(
"Title", context.title
));
// optional KeywordList element
if (context.keywords) {
node.appendChild(this.write_wmc_KeywordList(context.keywords));
}
// optional Abstract element
if (context["abstract"]) {
node.appendChild(this.createElementDefaultNS(
"Abstract", context["abstract"]
));
}
// Optional LogoURL element
if (context.logo) {
node.appendChild(this.write_wmc_URLType("LogoURL", context.logo.href, context.logo));
}
// Optional DescriptionURL element
if (context.descriptionURL) {
node.appendChild(this.write_wmc_URLType("DescriptionURL", context.descriptionURL));
}
// Optional ContactInformation element
if (context.contactInformation) {
node.appendChild(this.write_wmc_ContactInformation(context.contactInformation));
}
// OpenLayers specific map properties
node.appendChild(this.write_ol_MapExtension(context));
return node;
},
/**
* Method: write_wmc_KeywordList
*/
write_wmc_KeywordList: function(keywords) {
var node = this.createElementDefaultNS("KeywordList");
for (var i=0, len=keywords.length; i<len; i++) {
node.appendChild(this.createElementDefaultNS(
"Keyword", keywords[i]
));
}
return node;
},
/**
* Method: write_wmc_ContactInformation
*/
write_wmc_ContactInformation: function(contact) {
var node = this.createElementDefaultNS("ContactInformation");
if (contact.personPrimary) {
node.appendChild(this.write_wmc_ContactPersonPrimary(contact.personPrimary));
}
if (contact.position) {
node.appendChild(this.createElementDefaultNS(
"ContactPosition", contact.position
));
}
if (contact.contactAddress) {
node.appendChild(this.write_wmc_ContactAddress(contact.contactAddress));
}
if (contact.phone) {
node.appendChild(this.createElementDefaultNS(
"ContactVoiceTelephone", contact.phone
));
}
if (contact.fax) {
node.appendChild(this.createElementDefaultNS(
"ContactFacsimileTelephone", contact.fax
));
}
if (contact.email) {
node.appendChild(this.createElementDefaultNS(
"ContactElectronicMailAddress", contact.email
));
}
return node;
},
/**
* Method: write_wmc_ContactPersonPrimary
*/
write_wmc_ContactPersonPrimary: function(personPrimary) {
var node = this.createElementDefaultNS("ContactPersonPrimary");
if (personPrimary.person) {
node.appendChild(this.createElementDefaultNS(
"ContactPerson", personPrimary.person
));
}
if (personPrimary.organization) {
node.appendChild(this.createElementDefaultNS(
"ContactOrganization", personPrimary.organization
));
}
return node;
},
/**
* Method: write_wmc_ContactAddress
*/
write_wmc_ContactAddress: function(contactAddress) {
var node = this.createElementDefaultNS("ContactAddress");
if (contactAddress.type) {
node.appendChild(this.createElementDefaultNS(
"AddressType", contactAddress.type
));
}
if (contactAddress.address) {
node.appendChild(this.createElementDefaultNS(
"Address", contactAddress.address
));
}
if (contactAddress.city) {
node.appendChild(this.createElementDefaultNS(
"City", contactAddress.city
));
}
if (contactAddress.stateOrProvince) {
node.appendChild(this.createElementDefaultNS(
"StateOrProvince", contactAddress.stateOrProvince
));
}
if (contactAddress.postcode) {
node.appendChild(this.createElementDefaultNS(
"PostCode", contactAddress.postcode
));
}
if (contactAddress.country) {
node.appendChild(this.createElementDefaultNS(
"Country", contactAddress.country
));
}
return node;
},
/**
* Method: write_ol_MapExtension
*/
write_ol_MapExtension: function(context) {
var node = this.createElementDefaultNS("Extension");
var bounds = context.maxExtent;
if(bounds) {
var maxExtent = this.createElementNS(
this.namespaces.ol, "ol:maxExtent"
);
this.setAttributes(maxExtent, {
minx: bounds.left.toPrecision(18),
miny: bounds.bottom.toPrecision(18),
maxx: bounds.right.toPrecision(18),
maxy: bounds.top.toPrecision(18)
});
node.appendChild(maxExtent);
}
return node;
},
/**
* Method: write_wmc_LayerList
* Create a LayerList node given an context object.
*
* Parameters:
* context - {Object} Context object.
*
* Returns:
* {Element} A WMC LayerList element node.
*/
write_wmc_LayerList: function(context) {
var list = this.createElementDefaultNS("LayerList");
for(var i=0, len=context.layersContext.length; i<len; ++i) {
list.appendChild(this.write_wmc_Layer(context.layersContext[i]));
}
return list;
},
/**
* Method: write_wmc_Layer
* Create a Layer node given a layer context object.
*
* Parameters:
* context - {Object} A layer context object.}
*
* Returns:
* {Element} A WMC Layer element node.
*/
write_wmc_Layer: function(context) {
var node = this.createElementDefaultNS(
"Layer", null, {
queryable: context.queryable ? "1" : "0",
hidden: context.visibility ? "0" : "1"
}
);
// required Server element
node.appendChild(this.write_wmc_Server(context));
// required Name element
node.appendChild(this.createElementDefaultNS(
"Name", context.name
));
// required Title element
node.appendChild(this.createElementDefaultNS(
"Title", context.title
));
// optional Abstract element
if (context["abstract"]) {
node.appendChild(this.createElementDefaultNS(
"Abstract", context["abstract"]
));
}
// optional DataURL element
if (context.dataURL) {
node.appendChild(this.write_wmc_URLType("DataURL", context.dataURL));
}
// optional MetadataURL element
if (context.metadataURL) {
node.appendChild(this.write_wmc_URLType("MetadataURL", context.metadataURL));
}
return node;
},
/**
* Method: write_wmc_LayerExtension
* Add OpenLayers specific layer parameters to an Extension element.
*
* Parameters:
* context - {Object} A layer context object.
*
* Returns:
* {Element} A WMC Extension element (for a layer).
*/
write_wmc_LayerExtension: function(context) {
var node = this.createElementDefaultNS("Extension");
var bounds = context.maxExtent;
var maxExtent = this.createElementNS(
this.namespaces.ol, "ol:maxExtent"
);
this.setAttributes(maxExtent, {
minx: bounds.left.toPrecision(18),
miny: bounds.bottom.toPrecision(18),
maxx: bounds.right.toPrecision(18),
maxy: bounds.top.toPrecision(18)
});
node.appendChild(maxExtent);
if (context.tileSize && !context.singleTile) {
var size = this.createElementNS(
this.namespaces.ol, "ol:tileSize"
);
this.setAttributes(size, context.tileSize);
node.appendChild(size);
}
var properties = [
"transparent", "numZoomLevels", "units", "isBaseLayer",
"opacity", "displayInLayerSwitcher", "singleTile"
];
var child;
for(var i=0, len=properties.length; i<len; ++i) {
child = this.createOLPropertyNode(context, properties[i]);
if(child) {
node.appendChild(child);
}
}
return node;
},
/**
* Method: createOLPropertyNode
* Create a node representing an OpenLayers property. If the property is
* null or undefined, null will be returned.
*
* Parameters:
* obj - {Object} An object.
* prop - {String} A property.
*
* Returns:
* {Element} A property node.
*/
createOLPropertyNode: function(obj, prop) {
var node = null;
if(obj[prop] != null) {
node = this.createElementNS(this.namespaces.ol, "ol:" + prop);
node.appendChild(this.createTextNode(obj[prop].toString()));
}
return node;
},
/**
* Method: write_wmc_Server
* Create a Server node given a layer context object.
*
* Parameters:
* context - {Object} Layer context object.
*
* Returns:
* {Element} A WMC Server element node.
*/
write_wmc_Server: function(context) {
var server = context.server;
var node = this.createElementDefaultNS("Server");
var attributes = {
service: "OGC:WMS",
version: server.version
};
if (server.title) {
attributes.title = server.title;
}
this.setAttributes(node, attributes);
// required OnlineResource element
node.appendChild(this.write_wmc_OnlineResource(server.url));
return node;
},
/**
* Method: write_wmc_URLType
* Create a LogoURL/DescriptionURL/MetadataURL/DataURL/LegendURL node given a object and elementName.
*
* Parameters:
* elName - {String} Name of element (LogoURL/DescriptionURL/MetadataURL/LegendURL)
* url - {String} URL string value
* attr - {Object} Optional attributes (width, height, format)
*
* Returns:
* {Element} A WMC element node.
*/
write_wmc_URLType: function(elName, url, attr) {
var node = this.createElementDefaultNS(elName);
node.appendChild(this.write_wmc_OnlineResource(url));
if (attr) {
var optionalAttributes = ["width", "height", "format"];
for (var i=0; i<optionalAttributes.length; i++) {
if (optionalAttributes[i] in attr) {
node.setAttribute(optionalAttributes[i], attr[optionalAttributes[i]]);
}
}
}
return node;
},
/**
* Method: write_wmc_DimensionList
*/
write_wmc_DimensionList: function(context) {
var node = this.createElementDefaultNS("DimensionList");
var required_attributes = {
name: true,
units: true,
unitSymbol: true,
userValue: true
};
for (var dim in context.dimensions) {
var attributes = {};
var dimension = context.dimensions[dim];
for (var name in dimension) {
if (typeof dimension[name] == "boolean") {
attributes[name] = Number(dimension[name]);
} else {
attributes[name] = dimension[name];
}
}
var values = "";
if (attributes.values) {
values = attributes.values.join(",");
delete attributes.values;
}
node.appendChild(this.createElementDefaultNS(
"Dimension", values, attributes
));
}
return node;
},
/**
* Method: write_wmc_FormatList
* Create a FormatList node given a layer context.
*
* Parameters:
* context - {Object} Layer context object.
*
* Returns:
* {Element} A WMC FormatList element node.
*/
write_wmc_FormatList: function(context) {
var node = this.createElementDefaultNS("FormatList");
for (var i=0, len=context.formats.length; i<len; i++) {
var format = context.formats[i];
node.appendChild(this.createElementDefaultNS(
"Format",
format.value,
(format.current && format.current == true) ?
{current: "1"} : null
));
}
return node;
},
/**
* Method: write_wmc_StyleList
* Create a StyleList node given a layer context.
*
* Parameters:
* layer - {Object} Layer context object.
*
* Returns:
* {Element} A WMC StyleList element node.
*/
write_wmc_StyleList: function(layer) {
var node = this.createElementDefaultNS("StyleList");
var styles = layer.styles;
if (styles && OpenLayers.Util.isArray(styles)) {
var sld;
for (var i=0, len=styles.length; i<len; i++) {
var s = styles[i];
// three style types to consider
// [1] linked SLD
// [2] inline SLD
// [3] named style
// running child nodes always gets name, optionally gets href or body
var style = this.createElementDefaultNS(
"Style",
null,
(s.current && s.current == true) ?
{current: "1"} : null
);
if(s.href) { // [1]
sld = this.createElementDefaultNS("SLD");
// Name is optional.
if (s.name) {
sld.appendChild(this.createElementDefaultNS("Name", s.name));
}
// Title is optional.
if (s.title) {
sld.appendChild(this.createElementDefaultNS("Title", s.title));
}
// LegendURL is optional
if (s.legend) {
sld.appendChild(this.write_wmc_URLType("LegendURL", s.legend.href, s.legend));
}
var link = this.write_wmc_OnlineResource(s.href);
sld.appendChild(link);
style.appendChild(sld);
} else if(s.body) { // [2]
sld = this.createElementDefaultNS("SLD");
// Name is optional.
if (s.name) {
sld.appendChild(this.createElementDefaultNS("Name", s.name));
}
// Title is optional.
if (s.title) {
sld.appendChild(this.createElementDefaultNS("Title", s.title));
}
// LegendURL is optional
if (s.legend) {
sld.appendChild(this.write_wmc_URLType("LegendURL", s.legend.href, s.legend));
}
// read in body as xml doc - assume proper namespace declarations
var doc = OpenLayers.Format.XML.prototype.read.apply(this, [s.body]);
// append to StyledLayerDescriptor node
var imported = doc.documentElement;
if(sld.ownerDocument && sld.ownerDocument.importNode) {
imported = sld.ownerDocument.importNode(imported, true);
}
sld.appendChild(imported);
style.appendChild(sld);
} else { // [3]
// both Name and Title are required.
style.appendChild(this.createElementDefaultNS("Name", s.name));
style.appendChild(this.createElementDefaultNS("Title", s.title));
// Abstract is optional
if (s['abstract']) { // abstract is a js keyword
style.appendChild(this.createElementDefaultNS(
"Abstract", s['abstract']
));
}
// LegendURL is optional
if (s.legend) {
style.appendChild(this.write_wmc_URLType("LegendURL", s.legend.href, s.legend));
}
}
node.appendChild(style);
}
}
return node;
},
/**
* Method: write_wmc_OnlineResource
* Create an OnlineResource node given a URL.
*
* Parameters:
* href - {String} URL for the resource.
*
* Returns:
* {Element} A WMC OnlineResource element node.
*/
write_wmc_OnlineResource: function(href) {
var node = this.createElementDefaultNS("OnlineResource");
this.setAttributeNS(node, this.namespaces.xlink, "xlink:type", "simple");
this.setAttributeNS(node, this.namespaces.xlink, "xlink:href", href);
return node;
},
/**
* Method: getOnlineResource_href
*/
getOnlineResource_href: function(node) {
var object = {};
var links = node.getElementsByTagName("OnlineResource");
if(links.length > 0) {
this.read_wmc_OnlineResource(object, links[0]);
}
return object.href;
},
CLASS_NAME: "OpenLayers.Format.WMC.v1"
});