[76] | 1 | /* Copyright (c) 2006-2010 by OpenLayers Contributors (see authors.txt for |
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| 2 | * full list of contributors). Published under the Clear BSD license. |
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| 3 | * See http://svn.openlayers.org/trunk/openlayers/license.txt for the |
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| 4 | * full text of the license. */ |
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| 5 | |
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| 6 | /** |
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| 7 | * @requires OpenLayers/Format/XML.js |
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| 8 | * @requires OpenLayers/Style.js |
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| 9 | * @requires OpenLayers/Rule.js |
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| 10 | * @requires OpenLayers/Filter/FeatureId.js |
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| 11 | * @requires OpenLayers/Filter/Logical.js |
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| 12 | * @requires OpenLayers/Filter/Comparison.js |
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| 13 | * @requires OpenLayers/Filter/Spatial.js |
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| 14 | */ |
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| 15 | |
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| 16 | /** |
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| 17 | * Class: OpenLayers.Format.SLD |
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| 18 | * Read/Wite SLD. Create a new instance with the <OpenLayers.Format.SLD> |
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| 19 | * constructor. |
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| 20 | * |
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| 21 | * Inherits from: |
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| 22 | * - <OpenLayers.Format.XML> |
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| 23 | */ |
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| 24 | OpenLayers.Format.SLD = OpenLayers.Class(OpenLayers.Format.XML, { |
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| 25 | |
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| 26 | /** |
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| 27 | * APIProperty: defaultVersion |
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| 28 | * {String} Version number to assume if none found. Default is "1.0.0". |
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| 29 | */ |
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| 30 | defaultVersion: "1.0.0", |
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| 31 | |
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| 32 | /** |
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| 33 | * APIProperty: version |
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| 34 | * {String} Specify a version string if one is known. |
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| 35 | */ |
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| 36 | version: null, |
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| 37 | |
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| 38 | /** |
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| 39 | * APIProperty: namedLayersAsArray |
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| 40 | * {Boolean} Generate a namedLayers array. If false, the namedLayers |
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| 41 | * property value will be an object keyed by layer name. Default is |
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| 42 | * false. |
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| 43 | */ |
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| 44 | namedLayersAsArray: false, |
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| 45 | |
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| 46 | /** |
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| 47 | * Property: parser |
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| 48 | * {Object} Instance of the versioned parser. Cached for multiple read and |
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| 49 | * write calls of the same version. |
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| 50 | */ |
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| 51 | parser: null, |
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| 52 | |
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| 53 | /** |
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| 54 | * Constructor: OpenLayers.Format.SLD |
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| 55 | * Create a new parser for SLD. |
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| 56 | * |
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| 57 | * Parameters: |
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| 58 | * options - {Object} An optional object whose properties will be set on |
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| 59 | * this instance. |
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| 60 | */ |
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| 61 | initialize: function(options) { |
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| 62 | OpenLayers.Format.XML.prototype.initialize.apply(this, [options]); |
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| 63 | }, |
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| 64 | |
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| 65 | /** |
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| 66 | * APIMethod: write |
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| 67 | * Write a SLD document given a list of styles. |
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| 68 | * |
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| 69 | * Parameters: |
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| 70 | * sld - {Object} An object representing the SLD. |
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| 71 | * options - {Object} Optional configuration object. |
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| 72 | * |
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| 73 | * Returns: |
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| 74 | * {String} An SLD document string. |
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| 75 | */ |
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| 76 | write: function(sld, options) { |
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| 77 | var version = (options && options.version) || |
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| 78 | this.version || this.defaultVersion; |
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| 79 | if(!this.parser || this.parser.VERSION != version) { |
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| 80 | var format = OpenLayers.Format.SLD[ |
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| 81 | "v" + version.replace(/\./g, "_") |
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| 82 | ]; |
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| 83 | if(!format) { |
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| 84 | throw "Can't find a SLD parser for version " + |
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| 85 | version; |
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| 86 | } |
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| 87 | this.parser = new format(this.options); |
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| 88 | } |
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| 89 | var root = this.parser.write(sld); |
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| 90 | return OpenLayers.Format.XML.prototype.write.apply(this, [root]); |
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| 91 | }, |
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| 92 | |
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| 93 | /** |
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| 94 | * APIMethod: read |
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| 95 | * Read and SLD doc and return an object representing the SLD. |
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| 96 | * |
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| 97 | * Parameters: |
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| 98 | * data - {String | DOMElement} Data to read. |
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| 99 | * options - {Object} Options for the reader. |
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| 100 | * |
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| 101 | * Returns: |
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| 102 | * {Object} An object representing the SLD. |
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| 103 | */ |
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| 104 | read: function(data, options) { |
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| 105 | if(typeof data == "string") { |
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| 106 | data = OpenLayers.Format.XML.prototype.read.apply(this, [data]); |
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| 107 | } |
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| 108 | var root = data.documentElement; |
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| 109 | var version = this.version; |
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| 110 | if(!version) { |
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| 111 | version = root.getAttribute("version"); |
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| 112 | if(!version) { |
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| 113 | version = this.defaultVersion; |
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| 114 | } |
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| 115 | } |
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| 116 | if(!this.parser || this.parser.VERSION != version) { |
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| 117 | var format = OpenLayers.Format.SLD[ |
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| 118 | "v" + version.replace(/\./g, "_") |
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| 119 | ]; |
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| 120 | if(!format) { |
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| 121 | throw "Can't find a SLD parser for version " + |
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| 122 | version; |
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| 123 | } |
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| 124 | this.parser = new format(this.options); |
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| 125 | } |
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| 126 | var sld = this.parser.read(data, options); |
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| 127 | return sld; |
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| 128 | }, |
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| 129 | |
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| 130 | CLASS_NAME: "OpenLayers.Format.SLD" |
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| 131 | }); |
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