More trip planner testing with colors
[busui.git] / labs / openlayers / lib / OpenLayers / Format / SLD.js
blob:a/labs/openlayers/lib/OpenLayers/Format/SLD.js -> blob:b/labs/openlayers/lib/OpenLayers/Format/SLD.js
  /* 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/XML.js
  * @requires OpenLayers/Style.js
  * @requires OpenLayers/Rule.js
  * @requires OpenLayers/Filter/FeatureId.js
  * @requires OpenLayers/Filter/Logical.js
  * @requires OpenLayers/Filter/Comparison.js
  * @requires OpenLayers/Filter/Spatial.js
  */
   
  /**
  * Class: OpenLayers.Format.SLD
  * Read/Wite SLD. Create a new instance with the <OpenLayers.Format.SLD>
  * constructor.
  *
  * Inherits from:
  * - <OpenLayers.Format.XML>
  */
  OpenLayers.Format.SLD = OpenLayers.Class(OpenLayers.Format.XML, {
   
  /**
  * APIProperty: defaultVersion
  * {String} Version number to assume if none found. Default is "1.0.0".
  */
  defaultVersion: "1.0.0",
   
  /**
  * APIProperty: version
  * {String} Specify a version string if one is known.
  */
  version: null,
   
  /**
  * APIProperty: namedLayersAsArray
  * {Boolean} Generate a namedLayers array. If false, the namedLayers
  * property value will be an object keyed by layer name. Default is
  * false.
  */
  namedLayersAsArray: false,
   
  /**
  * Property: parser
  * {Object} Instance of the versioned parser. Cached for multiple read and
  * write calls of the same version.
  */
  parser: null,
   
  /**
  * Constructor: OpenLayers.Format.SLD
  * Create a new parser for SLD.
  *
  * 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: write
  * Write a SLD document given a list of styles.
  *
  * Parameters:
  * sld - {Object} An object representing the SLD.
  * options - {Object} Optional configuration object.
  *
  * Returns:
  * {String} An SLD document string.
  */
  write: function(sld, options) {
  var version = (options && options.version) ||
  this.version || this.defaultVersion;
  if(!this.parser || this.parser.VERSION != version) {
  var format = OpenLayers.Format.SLD[
  "v" + version.replace(/\./g, "_")
  ];
  if(!format) {
  throw "Can't find a SLD parser for version " +
  version;
  }
  this.parser = new format(this.options);
  }
  var root = this.parser.write(sld);
  return OpenLayers.Format.XML.prototype.write.apply(this, [root]);
  },
   
  /**
  * APIMethod: read
  * Read and SLD doc and return an object representing the SLD.
  *
  * Parameters:
  * data - {String | DOMElement} Data to read.
  * options - {Object} Options for the reader.
  *
  * Returns:
  * {Object} An object representing the SLD.
  */
  read: function(data, options) {
  if(typeof data == "string") {
  data = OpenLayers.Format.XML.prototype.read.apply(this, [data]);
  }
  var root = data.documentElement;
  var version = this.version;
  if(!version) {
  version = root.getAttribute("version");
  if(!version) {
  version = this.defaultVersion;
  }
  }
  if(!this.parser || this.parser.VERSION != version) {
  var format = OpenLayers.Format.SLD[
  "v" + version.replace(/\./g, "_")
  ];
  if(!format) {
  throw "Can't find a SLD parser for version " +
  version;
  }
  this.parser = new format(this.options);
  }
  var sld = this.parser.read(data, options);
  return sld;
  },
   
  CLASS_NAME: "OpenLayers.Format.SLD"
  });