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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/Context.js
*/
/**
* Class: OpenLayers.Format.OWSContext
* Read and write OWS Context documents. OWS Context documents are a
* preliminary OGC (Open Geospatial Consortium) standard for storing the
* state of a web mapping application. In a way it is the successor to
* Web Map Context (WMC), since it is more generic and more types of layers
* can be stored. Also, nesting of layers is supported since version 0.3.1.
* For more information see: http://www.ogcnetwork.net/context
*
* Inherits from:
* - <OpenLayers.Format.Context>
*/
OpenLayers.Format.OWSContext = OpenLayers.Class(OpenLayers.Format.Context,{
/**
* APIProperty: defaultVersion
* {String} Version number to assume if none found. Default is "0.3.1".
*/
defaultVersion: "0.3.1",
/**
* Constructor: OpenLayers.Format.OWSContext
* Create a new parser for OWS Context documents.
*
* Parameters:
* options - {Object} An optional object whose properties will be set on
* this instance.
*/
/**
* Method: getVersion
* Returns the version to use. Subclasses can override this function
* if a different version detection is needed.
*
* Parameters:
* root - {DOMElement}
* options - {Object} Optional configuration object.
*
* Returns:
* {String} The version to use.
*/
getVersion: function(root, options) {
var version = OpenLayers.Format.XML.VersionedOGC.prototype.getVersion.apply(
this, arguments);
// 0.3.1 is backwards compatible with 0.3.0
if (version === "0.3.0") {
version = this.defaultVersion;
}
return version;
},
/**
* Method: toContext
* Create a context object free from layer given a map or a
* context object.
*
* Parameters:
* obj - {<OpenLayers.Map> | Object} The map or context.
*
* Returns:
* {Object} A context object.
*/
toContext: function(obj) {
var context = {};
if(obj.CLASS_NAME == "OpenLayers.Map") {
context.bounds = obj.getExtent();
context.maxExtent = obj.maxExtent;
context.projection = obj.projection;
context.size = obj.getSize();
context.layers = obj.layers;
}
return context;
},
CLASS_NAME: "OpenLayers.Format.OWSContext"
});
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