ad54169479
git-svn-id: http://svn.openlayers.org/trunk/openlayers@10995 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
82 lines
2.6 KiB
JavaScript
82 lines
2.6 KiB
JavaScript
/* Copyright (c) 2006-2011 by OpenLayers Contributors (see authors.txt for
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* full list of contributors). Published under the Clear BSD license.
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* See http://svn.openlayers.org/trunk/openlayers/license.txt for the
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* full text of the license. */
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/**
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* @requires OpenLayers/Format/Context.js
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*/
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/**
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* Class: OpenLayers.Format.OWSContext
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* Read and write OWS Context documents. OWS Context documents are a
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* preliminary OGC (Open Geospatial Consortium) standard for storing the
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* state of a web mapping application. In a way it is the successor to
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* Web Map Context (WMC), since it is more generic and more types of layers
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* can be stored. Also, nesting of layers is supported since version 0.3.1.
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* For more information see: http://www.ogcnetwork.net/context
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*/
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OpenLayers.Format.OWSContext = OpenLayers.Class(OpenLayers.Format.Context,{
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/**
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* APIProperty: defaultVersion
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* {String} Version number to assume if none found. Default is "0.3.1".
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*/
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defaultVersion: "0.3.1",
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/**
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* Method: getParser
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* Get the OWSContext parser given a version. Create a new parser if it does not
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* already exist.
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*
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* Parameters:
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* version - {String} The version of the parser.
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*
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* Returns:
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* {<OpenLayers.Format.OWSContext>} An OWSContext parser.
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*/
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getParser: function(version) {
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var v = version || this.version || this.defaultVersion;
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// 0.3.1 is backwards compatible with 0.3.0
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if (v === "0.3.0") {
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v = this.defaultVersion;
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}
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if(!this.parser || this.parser.VERSION != v) {
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var format = OpenLayers.Format.OWSContext[
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"v" + v.replace(/\./g, "_")
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];
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if(!format) {
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throw "Can't find a OWSContext parser for version " + v;
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}
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this.parser = new format(this.options);
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}
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return this.parser;
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},
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/**
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* Method: toContext
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* Create a context object free from layer given a map or a
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* context object.
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*
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* Parameters:
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* obj - {<OpenLayers.Map> | Object} The map or context.
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*
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* Returns:
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* {Object} A context object.
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*/
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toContext: function(obj) {
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var context = {};
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if(obj.CLASS_NAME == "OpenLayers.Map") {
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context.bounds = obj.getExtent();
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context.maxExtent = obj.maxExtent;
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context.projection = obj.projection;
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context.size = obj.getSize();
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context.layers = obj.layers;
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}
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return context;
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},
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CLASS_NAME: "OpenLayers.Format.OWSContext"
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});
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