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/Geometry/Polygon.js |
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9 | * @requires OpenLayers/Geometry/Point.js |
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10 | * @requires OpenLayers/Geometry/MultiPolygon.js |
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11 | * @requires OpenLayers/Geometry/LinearRing.js |
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12 | */ |
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13 | |
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14 | /** |
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15 | * Class: OpenLayers.Format.ArcXML |
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16 | * Read/Wite ArcXML. Create a new instance with the <OpenLayers.Format.ArcXML> |
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17 | * constructor. |
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18 | * |
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19 | * Inherits from: |
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20 | * - <OpenLayers.Format> |
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21 | */ |
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22 | OpenLayers.Format.ArcXML = OpenLayers.Class(OpenLayers.Format.XML, { |
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23 | |
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24 | /** |
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25 | * Property: fontStyleKeys |
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26 | * {Array} List of keys used in font styling. |
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27 | */ |
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28 | fontStyleKeys: [ |
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29 | 'antialiasing', 'blockout', 'font', 'fontcolor','fontsize', 'fontstyle', |
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30 | 'glowing', 'interval', 'outline', 'printmode', 'shadow', 'transparency' |
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31 | ], |
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32 | |
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33 | /** |
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34 | * Property: request |
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35 | * A get_image request destined for an ArcIMS server. |
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36 | */ |
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37 | request: null, |
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38 | |
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39 | /** |
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40 | * Property: response |
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41 | * A parsed response from an ArcIMS server. |
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42 | */ |
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43 | response: null, |
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44 | |
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45 | /** |
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46 | * Constructor: OpenLayers.Format.ArcXML |
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47 | * Create a new parser/writer for ArcXML. Create an instance of this class |
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48 | * to begin authoring a request to an ArcIMS service. This is used |
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49 | * primarily by the ArcIMS layer, but could be used to do other wild |
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50 | * stuff, like geocoding. |
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51 | * |
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52 | * Parameters: |
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53 | * options - {Object} An optional object whose properties will be set on |
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54 | * this instance. |
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55 | */ |
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56 | initialize: function(options) { |
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57 | this.request = new OpenLayers.Format.ArcXML.Request(); |
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58 | this.response = new OpenLayers.Format.ArcXML.Response(); |
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59 | |
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60 | if (options) { |
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61 | if (options.requesttype == "feature") { |
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62 | this.request.get_image = null; |
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63 | |
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64 | var qry = this.request.get_feature.query; |
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65 | this.addCoordSys(qry.featurecoordsys, options.featureCoordSys); |
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66 | this.addCoordSys(qry.filtercoordsys, options.filterCoordSys); |
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67 | |
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68 | if (options.polygon) { |
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69 | qry.isspatial = true; |
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70 | qry.spatialfilter.polygon = options.polygon; |
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71 | } else if (options.envelope) { |
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72 | qry.isspatial = true; |
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73 | qry.spatialfilter.envelope = {minx:0, miny:0, maxx:0, maxy:0}; |
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74 | this.parseEnvelope(qry.spatialfilter.envelope, options.envelope); |
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75 | } |
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76 | } else if (options.requesttype == "image") { |
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77 | this.request.get_feature = null; |
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78 | |
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79 | var props = this.request.get_image.properties; |
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80 | this.parseEnvelope(props.envelope, options.envelope); |
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81 | |
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82 | this.addLayers(props.layerlist, options.layers); |
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83 | this.addImageSize(props.imagesize, options.tileSize); |
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84 | this.addCoordSys(props.featurecoordsys, options.featureCoordSys); |
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85 | this.addCoordSys(props.filtercoordsys, options.filterCoordSys); |
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86 | } else { |
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87 | // if an arcxml object is being created with no request type, it is |
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88 | // probably going to consume a response, so do not throw an error if |
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89 | // the requesttype is not defined |
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90 | this.request = null; |
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91 | } |
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92 | } |
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93 | |
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94 | OpenLayers.Format.XML.prototype.initialize.apply(this, [options]); |
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95 | }, |
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96 | |
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97 | /** |
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98 | * Method: parseEnvelope |
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99 | * Parse an array of coordinates into an ArcXML envelope structure. |
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100 | * |
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101 | * Parameters: |
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102 | * env - {Object} An envelope object that will contain the parsed coordinates. |
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103 | * arr - {Array(double)} An array of coordinates in the order: [ minx, miny, maxx, maxy ] |
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104 | */ |
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105 | parseEnvelope: function(env, arr) { |
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106 | if (arr && arr.length == 4) { |
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107 | env.minx = arr[0]; |
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108 | env.miny = arr[1]; |
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109 | env.maxx = arr[2]; |
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110 | env.maxy = arr[3]; |
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111 | } |
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112 | }, |
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113 | |
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114 | /** |
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115 | * Method: addLayers |
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116 | * Add a collection of layers to another collection of layers. Each layer in the list is tuple of |
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117 | * { id, visible }. These layer collections represent the |
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118 | * /ARCXML/REQUEST/get_image/PROPERTIES/LAYERLIST/LAYERDEF items in ArcXML |
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119 | * |
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120 | * TODO: Add support for dynamic layer rendering. |
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121 | * |
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122 | * Parameters: |
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123 | * ll - {Array({id,visible})} A list of layer definitions. |
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124 | * lyrs - {Array({id,visible})} A list of layer definitions. |
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125 | */ |
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126 | addLayers: function(ll, lyrs) { |
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127 | for(var lind = 0, len=lyrs.length; lind < len; lind++) { |
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128 | ll.push(lyrs[lind]); |
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129 | } |
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130 | }, |
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131 | |
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132 | /** |
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133 | * Method: addImageSize |
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134 | * Set the size of the requested image. |
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135 | * |
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136 | * Parameters: |
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137 | * imsize - {Object} An ArcXML imagesize object. |
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138 | * olsize - {OpenLayers.Size} The image size to set. |
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139 | */ |
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140 | addImageSize: function(imsize, olsize) { |
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141 | if (olsize !== null) { |
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142 | imsize.width = olsize.w; |
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143 | imsize.height = olsize.h; |
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144 | imsize.printwidth = olsize.w; |
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145 | imsize.printheight = olsize.h; |
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146 | } |
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147 | }, |
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148 | |
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149 | /** |
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150 | * Method: addCoordSys |
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151 | * Add the coordinate system information to an object. The object may be |
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152 | * |
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153 | * Parameters: |
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154 | * featOrFilt - {Object} A featurecoordsys or filtercoordsys ArcXML structure. |
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155 | * fsys - {String} or {OpenLayers.Projection} or {filtercoordsys} or |
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156 | * {featurecoordsys} A projection representation. If it's a {String}, |
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157 | * the value is assumed to be the SRID. If it's a {OpenLayers.Projection} |
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158 | * AND Proj4js is available, the projection number and name are extracted |
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159 | * from there. If it's a filter or feature ArcXML structure, it is copied. |
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160 | */ |
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161 | addCoordSys: function(featOrFilt, fsys) { |
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162 | if (typeof fsys == "string") { |
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163 | featOrFilt.id = parseInt(fsys); |
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164 | featOrFilt.string = fsys; |
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165 | } |
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166 | // is this a proj4js instance? |
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167 | else if (typeof fsys == "object" && fsys.proj !== null){ |
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168 | featOrFilt.id = fsys.proj.srsProjNumber; |
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169 | featOrFilt.string = fsys.proj.srsCode; |
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170 | } else { |
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171 | featOrFilt = fsys; |
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172 | } |
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173 | }, |
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174 | |
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175 | /** |
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176 | * APIMethod: iserror |
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177 | * Check to see if the response from the server was an error. |
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178 | * |
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179 | * Parameters: |
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180 | * data - {String} or {DOMElement} data to read/parse. If nothing is supplied, |
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181 | * the current response is examined. |
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182 | * |
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183 | * Returns: |
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184 | * {Boolean} true if the response was an error. |
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185 | */ |
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186 | iserror: function(data) { |
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187 | var ret = null; |
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188 | |
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189 | if (!data) { |
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190 | ret = (this.response.error !== ''); |
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191 | } else { |
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192 | data = OpenLayers.Format.XML.prototype.read.apply(this, [data]); |
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193 | var errorNodes = data.documentElement.getElementsByTagName("ERROR"); |
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194 | ret = (errorNodes !== null && errorNodes.length > 0); |
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195 | } |
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196 | |
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197 | return ret; |
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198 | }, |
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199 | |
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200 | /** |
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201 | * APIMethod: read |
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202 | * Read data from a string, and return an response. |
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203 | * |
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204 | * Parameters: |
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205 | * data - {String} or {DOMElement} data to read/parse. |
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206 | * |
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207 | * Returns: |
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208 | * {OpenLayers.Format.ArcXML.Response} An ArcXML response. Note that this response |
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209 | * data may change in the future. |
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210 | */ |
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211 | read: function(data) { |
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212 | if(typeof data == "string") { |
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213 | data = OpenLayers.Format.XML.prototype.read.apply(this, [data]); |
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214 | } |
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215 | |
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216 | var arcNode = null; |
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217 | if (data && data.documentElement) { |
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218 | if(data.documentElement.nodeName == "ARCXML") { |
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219 | arcNode = data.documentElement; |
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220 | } else { |
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221 | arcNode = data.documentElement.getElementsByTagName("ARCXML")[0]; |
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222 | } |
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223 | } |
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224 | |
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225 | // in Safari, arcNode will be there but will have a child named |
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226 | // parsererror |
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227 | if (!arcNode || arcNode.firstChild.nodeName === 'parsererror') { |
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228 | var error, source; |
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229 | try { |
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230 | error = data.firstChild.nodeValue; |
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231 | source = data.firstChild.childNodes[1].firstChild.nodeValue; |
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232 | } catch (err) { |
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233 | // pass |
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234 | } |
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235 | throw { |
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236 | message: "Error parsing the ArcXML request", |
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237 | error: error, |
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238 | source: source |
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239 | }; |
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240 | } |
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241 | |
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242 | var response = this.parseResponse(arcNode); |
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243 | return response; |
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244 | }, |
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245 | |
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246 | /** |
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247 | * APIMethod: write |
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248 | * Generate an ArcXml document string for sending to an ArcIMS server. |
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249 | * |
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250 | * Returns: |
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251 | * {String} A string representing the ArcXML document request. |
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252 | */ |
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253 | write: function(request) { |
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254 | if (!request) { |
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255 | request = this.request; |
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256 | } |
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257 | var root = this.createElementNS("", "ARCXML"); |
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258 | root.setAttribute("version","1.1"); |
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259 | |
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260 | var reqElem = this.createElementNS("", "REQUEST"); |
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261 | |
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262 | if (request.get_image != null) { |
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263 | var getElem = this.createElementNS("", "GET_IMAGE"); |
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264 | reqElem.appendChild(getElem); |
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265 | |
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266 | var propElem = this.createElementNS("", "PROPERTIES"); |
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267 | getElem.appendChild(propElem); |
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268 | |
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269 | var props = request.get_image.properties; |
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270 | if (props.featurecoordsys != null) { |
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271 | var feat = this.createElementNS("", "FEATURECOORDSYS"); |
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272 | propElem.appendChild(feat); |
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273 | |
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274 | if (props.featurecoordsys.id === 0) { |
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275 | feat.setAttribute("string", props.featurecoordsys['string']); |
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276 | } |
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277 | else { |
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278 | feat.setAttribute("id", props.featurecoordsys.id); |
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279 | } |
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280 | } |
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281 | |
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282 | if (props.filtercoordsys != null) { |
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283 | var filt = this.createElementNS("", "FILTERCOORDSYS"); |
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284 | propElem.appendChild(filt); |
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285 | |
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286 | if (props.filtercoordsys.id === 0) { |
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287 | filt.setAttribute("string", props.filtercoordsys.string); |
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288 | } |
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289 | else { |
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290 | filt.setAttribute("id", props.filtercoordsys.id); |
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291 | } |
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292 | } |
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293 | |
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294 | if (props.envelope != null) { |
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295 | var env = this.createElementNS("", "ENVELOPE"); |
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296 | propElem.appendChild(env); |
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297 | |
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298 | env.setAttribute("minx", props.envelope.minx); |
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299 | env.setAttribute("miny", props.envelope.miny); |
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300 | env.setAttribute("maxx", props.envelope.maxx); |
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301 | env.setAttribute("maxy", props.envelope.maxy); |
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302 | } |
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303 | |
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304 | var imagesz = this.createElementNS("", "IMAGESIZE"); |
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305 | propElem.appendChild(imagesz); |
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306 | |
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307 | imagesz.setAttribute("height", props.imagesize.height); |
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308 | imagesz.setAttribute("width", props.imagesize.width); |
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309 | |
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310 | if (props.imagesize.height != props.imagesize.printheight || |
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311 | props.imagesize.width != props.imagesize.printwidth) { |
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312 | imagesz.setAttribute("printheight", props.imagesize.printheight); |
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313 | imagesz.setArrtibute("printwidth", props.imagesize.printwidth); |
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314 | } |
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315 | |
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316 | if (props.background != null) { |
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317 | var backgrnd = this.createElementNS("", "BACKGROUND"); |
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318 | propElem.appendChild(backgrnd); |
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319 | |
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320 | backgrnd.setAttribute("color", |
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321 | props.background.color.r + "," + |
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322 | props.background.color.g + "," + |
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323 | props.background.color.b); |
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324 | |
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325 | if (props.background.transcolor !== null) { |
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326 | backgrnd.setAttribute("transcolor", |
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327 | props.background.transcolor.r + "," + |
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328 | props.background.transcolor.g + "," + |
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329 | props.background.transcolor.b); |
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330 | } |
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331 | } |
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332 | |
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333 | if (props.layerlist != null && props.layerlist.length > 0) { |
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334 | var layerlst = this.createElementNS("", "LAYERLIST"); |
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335 | propElem.appendChild(layerlst); |
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336 | |
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337 | for (var ld = 0; ld < props.layerlist.length; ld++) { |
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338 | var ldef = this.createElementNS("", "LAYERDEF"); |
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339 | layerlst.appendChild(ldef); |
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340 | |
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341 | ldef.setAttribute("id", props.layerlist[ld].id); |
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342 | ldef.setAttribute("visible", props.layerlist[ld].visible); |
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343 | |
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344 | if (typeof props.layerlist[ld].query == "object") { |
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345 | var query = props.layerlist[ld].query; |
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346 | |
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347 | if (query.where.length < 0) { |
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348 | continue; |
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349 | } |
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350 | |
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351 | var queryElem = null; |
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352 | if (typeof query.spatialfilter == "boolean" && query.spatialfilter) { |
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353 | // handle spatial filter madness |
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354 | queryElem = this.createElementNS("", "SPATIALQUERY"); |
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355 | } |
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356 | else { |
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357 | queryElem = this.createElementNS("", "QUERY"); |
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358 | } |
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359 | |
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360 | queryElem.setAttribute("where", query.where); |
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361 | |
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362 | if (typeof query.accuracy == "number" && query.accuracy > 0) { |
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363 | queryElem.setAttribute("accuracy", query.accuracy); |
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364 | } |
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365 | if (typeof query.featurelimit == "number" && query.featurelimit < 2000) { |
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366 | queryElem.setAttribute("featurelimit", query.featurelimit); |
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367 | } |
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368 | if (typeof query.subfields == "string" && query.subfields != "#ALL#") { |
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369 | queryElem.setAttribute("subfields", query.subfields); |
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370 | } |
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371 | if (typeof query.joinexpression == "string" && query.joinexpression.length > 0) { |
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372 | queryElem.setAttribute("joinexpression", query.joinexpression); |
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373 | } |
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374 | if (typeof query.jointables == "string" && query.jointables.length > 0) { |
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375 | queryElem.setAttribute("jointables", query.jointables); |
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376 | } |
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377 | |
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378 | ldef.appendChild(queryElem); |
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379 | } |
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380 | |
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381 | if (typeof props.layerlist[ld].renderer == "object") { |
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382 | this.addRenderer(ldef, props.layerlist[ld].renderer); |
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383 | } |
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384 | } |
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385 | } |
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386 | } else if (request.get_feature != null) { |
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387 | var getElem = this.createElementNS("", "GET_FEATURES"); |
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388 | getElem.setAttribute("outputmode", "newxml"); |
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389 | getElem.setAttribute("checkesc", "true"); |
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390 | |
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391 | if (request.get_feature.geometry) { |
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392 | getElem.setAttribute("geometry", request.get_feature.geometry); |
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393 | } |
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394 | else { |
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395 | getElem.setAttribute("geometry", "false"); |
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396 | } |
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397 | |
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398 | if (request.get_feature.compact) { |
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399 | getElem.setAttribute("compact", request.get_feature.compact); |
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400 | } |
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401 | |
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402 | if (request.get_feature.featurelimit == "number") { |
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403 | getElem.setAttribute("featurelimit", request.get_feature.featurelimit); |
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404 | } |
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405 | |
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406 | getElem.setAttribute("globalenvelope", "true"); |
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407 | reqElem.appendChild(getElem); |
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408 | |
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409 | if (request.get_feature.layer != null && request.get_feature.layer.length > 0) { |
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410 | var lyrElem = this.createElementNS("", "LAYER"); |
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411 | lyrElem.setAttribute("id", request.get_feature.layer); |
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412 | getElem.appendChild(lyrElem); |
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413 | } |
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414 | |
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415 | var fquery = request.get_feature.query; |
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416 | if (fquery != null) { |
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417 | var qElem = null; |
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418 | if (fquery.isspatial) { |
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419 | qElem = this.createElementNS("", "SPATIALQUERY"); |
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420 | } else { |
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421 | qElem = this.createElementNS("", "QUERY"); |
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422 | } |
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423 | getElem.appendChild(qElem); |
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424 | |
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425 | if (typeof fquery.accuracy == "number") { |
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426 | qElem.setAttribute("accuracy", fquery.accuracy); |
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427 | } |
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428 | //qElem.setAttribute("featurelimit", "5"); |
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429 | |
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430 | if (fquery.featurecoordsys != null) { |
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431 | var fcsElem1 = this.createElementNS("", "FEATURECOORDSYS"); |
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432 | |
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433 | if (fquery.featurecoordsys.id == 0) { |
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434 | fcsElem1.setAttribute("string", fquery.featurecoordsys.string); |
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435 | } else { |
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436 | fcsElem1.setAttribute("id", fquery.featurecoordsys.id); |
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437 | } |
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438 | qElem.appendChild(fcsElem1); |
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439 | } |
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440 | |
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441 | if (fquery.filtercoordsys != null) { |
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442 | var fcsElem2 = this.createElementNS("", "FILTERCOORDSYS"); |
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443 | |
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444 | if (fquery.filtercoordsys.id === 0) { |
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445 | fcsElem2.setAttribute("string", fquery.filtercoordsys.string); |
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446 | } else { |
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447 | fcsElem2.setAttribute("id", fquery.filtercoordsys.id); |
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448 | } |
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449 | qElem.appendChild(fcsElem2); |
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450 | } |
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451 | |
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452 | if (fquery.buffer > 0) { |
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453 | var bufElem = this.createElementNS("", "BUFFER"); |
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454 | bufElem.setAttribute("distance", fquery.buffer); |
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455 | qElem.appendChild(bufElem); |
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456 | } |
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457 | |
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458 | if (fquery.isspatial) { |
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459 | var spfElem = this.createElementNS("", "SPATIALFILTER"); |
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460 | spfElem.setAttribute("relation", fquery.spatialfilter.relation); |
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461 | qElem.appendChild(spfElem); |
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462 | |
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463 | if (fquery.spatialfilter.envelope) { |
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464 | var envElem = this.createElementNS("", "ENVELOPE"); |
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465 | envElem.setAttribute("minx", fquery.spatialfilter.envelope.minx); |
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466 | envElem.setAttribute("miny", fquery.spatialfilter.envelope.miny); |
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467 | envElem.setAttribute("maxx", fquery.spatialfilter.envelope.maxx); |
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468 | envElem.setAttribute("maxy", fquery.spatialfilter.envelope.maxy); |
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469 | spfElem.appendChild(envElem); |
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470 | } else if(typeof fquery.spatialfilter.polygon == "object") { |
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471 | spfElem.appendChild(this.writePolygonGeometry(fquery.spatialfilter.polygon)); |
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472 | } |
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473 | } |
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474 | |
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475 | if (fquery.where != null && fquery.where.length > 0) { |
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476 | qElem.setAttribute("where", fquery.where); |
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477 | } |
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478 | } |
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479 | } |
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480 | |
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481 | root.appendChild(reqElem); |
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482 | |
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483 | return OpenLayers.Format.XML.prototype.write.apply(this, [root]); |
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484 | }, |
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485 | |
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486 | |
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487 | addGroupRenderer: function(ldef, toprenderer) { |
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488 | var topRelem = this.createElementNS("", "GROUPRENDERER"); |
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489 | ldef.appendChild(topRelem); |
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490 | |
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491 | for (var rind = 0; rind < toprenderer.length; rind++) { |
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492 | var renderer = toprenderer[rind]; |
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493 | this.addRenderer(topRelem, renderer); |
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494 | } |
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495 | }, |
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496 | |
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497 | |
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498 | addRenderer: function(topRelem, renderer) { |
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499 | if (renderer instanceof Array) { |
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500 | this.addGroupRenderer(topRelem, renderer); |
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501 | } else { |
---|
502 | var renderElem = this.createElementNS("", renderer.type.toUpperCase() + "RENDERER"); |
---|
503 | topRelem.appendChild(renderElem); |
---|
504 | |
---|
505 | if (renderElem.tagName == "VALUEMAPRENDERER") { |
---|
506 | this.addValueMapRenderer(renderElem, renderer); |
---|
507 | } else if (renderElem.tagName == "VALUEMAPLABELRENDERER") { |
---|
508 | this.addValueMapLabelRenderer(renderElem, renderer); |
---|
509 | } else if (renderElem.tagName == "SIMPLELABELRENDERER") { |
---|
510 | this.addSimpleLabelRenderer(renderElem, renderer); |
---|
511 | } else if (renderElem.tagName == "SCALEDEPENDENTRENDERER") { |
---|
512 | this.addScaleDependentRenderer(renderElem, renderer); |
---|
513 | } |
---|
514 | } |
---|
515 | }, |
---|
516 | |
---|
517 | |
---|
518 | addScaleDependentRenderer: function(renderElem, renderer) { |
---|
519 | if (typeof renderer.lower == "string" || typeof renderer.lower == "number") { |
---|
520 | renderElem.setAttribute("lower", renderer.lower); |
---|
521 | } |
---|
522 | if (typeof renderer.upper == "string" || typeof renderer.upper == "number") { |
---|
523 | renderElem.setAttribute("upper", renderer.upper); |
---|
524 | } |
---|
525 | |
---|
526 | this.addRenderer(renderElem, renderer.renderer); |
---|
527 | }, |
---|
528 | |
---|
529 | |
---|
530 | addValueMapLabelRenderer: function(renderElem, renderer) { |
---|
531 | renderElem.setAttribute("lookupfield", renderer.lookupfield); |
---|
532 | renderElem.setAttribute("labelfield", renderer.labelfield); |
---|
533 | |
---|
534 | if (typeof renderer.exacts == "object") { |
---|
535 | for (var ext=0, extlen=renderer.exacts.length; ext<extlen; ext++) { |
---|
536 | var exact = renderer.exacts[ext]; |
---|
537 | |
---|
538 | var eelem = this.createElementNS("", "EXACT"); |
---|
539 | |
---|
540 | if (typeof exact.value == "string") { |
---|
541 | eelem.setAttribute("value", exact.value); |
---|
542 | } |
---|
543 | if (typeof exact.label == "string") { |
---|
544 | eelem.setAttribute("label", exact.label); |
---|
545 | } |
---|
546 | if (typeof exact.method == "string") { |
---|
547 | eelem.setAttribute("method", exact.method); |
---|
548 | } |
---|
549 | |
---|
550 | renderElem.appendChild(eelem); |
---|
551 | |
---|
552 | if (typeof exact.symbol == "object") { |
---|
553 | var selem = null; |
---|
554 | |
---|
555 | if (exact.symbol.type == "text") { |
---|
556 | selem = this.createElementNS("", "TEXTSYMBOL"); |
---|
557 | } |
---|
558 | |
---|
559 | if (selem != null) { |
---|
560 | var keys = this.fontStyleKeys; |
---|
561 | for (var i = 0, len = keys.length; i < len; i++) { |
---|
562 | var key = keys[i]; |
---|
563 | if (exact.symbol[key]) { |
---|
564 | selem.setAttribute(key, exact.symbol[key]); |
---|
565 | } |
---|
566 | } |
---|
567 | eelem.appendChild(selem); |
---|
568 | } |
---|
569 | } |
---|
570 | } // for each exact |
---|
571 | } |
---|
572 | }, |
---|
573 | |
---|
574 | addValueMapRenderer: function(renderElem, renderer) { |
---|
575 | renderElem.setAttribute("lookupfield", renderer.lookupfield); |
---|
576 | |
---|
577 | if (typeof renderer.ranges == "object") { |
---|
578 | for(var rng=0, rnglen=renderer.ranges.length; rng<rnglen; rng++) { |
---|
579 | var range = renderer.ranges[rng]; |
---|
580 | |
---|
581 | var relem = this.createElementNS("", "RANGE"); |
---|
582 | relem.setAttribute("lower", range.lower); |
---|
583 | relem.setAttribute("upper", range.upper); |
---|
584 | |
---|
585 | renderElem.appendChild(relem); |
---|
586 | |
---|
587 | if (typeof range.symbol == "object") { |
---|
588 | var selem = null; |
---|
589 | |
---|
590 | if (range.symbol.type == "simplepolygon") { |
---|
591 | selem = this.createElementNS("", "SIMPLEPOLYGONSYMBOL"); |
---|
592 | } |
---|
593 | |
---|
594 | if (selem != null) { |
---|
595 | if (typeof range.symbol.boundarycolor == "string") { |
---|
596 | selem.setAttribute("boundarycolor", range.symbol.boundarycolor); |
---|
597 | } |
---|
598 | if (typeof range.symbol.fillcolor == "string") { |
---|
599 | selem.setAttribute("fillcolor", range.symbol.fillcolor); |
---|
600 | } |
---|
601 | if (typeof range.symbol.filltransparency == "number") { |
---|
602 | selem.setAttribute("filltransparency", range.symbol.filltransparency); |
---|
603 | } |
---|
604 | relem.appendChild(selem); |
---|
605 | } |
---|
606 | } |
---|
607 | } // for each range |
---|
608 | } else if (typeof renderer.exacts == "object") { |
---|
609 | for (var ext=0, extlen=renderer.exacts.length; ext<extlen; ext++) { |
---|
610 | var exact = renderer.exacts[ext]; |
---|
611 | |
---|
612 | var eelem = this.createElementNS("", "EXACT"); |
---|
613 | if (typeof exact.value == "string") { |
---|
614 | eelem.setAttribute("value", exact.value); |
---|
615 | } |
---|
616 | if (typeof exact.label == "string") { |
---|
617 | eelem.setAttribute("label", exact.label); |
---|
618 | } |
---|
619 | if (typeof exact.method == "string") { |
---|
620 | eelem.setAttribute("method", exact.method); |
---|
621 | } |
---|
622 | |
---|
623 | renderElem.appendChild(eelem); |
---|
624 | |
---|
625 | if (typeof exact.symbol == "object") { |
---|
626 | var selem = null; |
---|
627 | |
---|
628 | if (exact.symbol.type == "simplemarker") { |
---|
629 | selem = this.createElementNS("", "SIMPLEMARKERSYMBOL"); |
---|
630 | } |
---|
631 | |
---|
632 | if (selem != null) { |
---|
633 | if (typeof exact.symbol.antialiasing == "string") { |
---|
634 | selem.setAttribute("antialiasing", exact.symbol.antialiasing); |
---|
635 | } |
---|
636 | if (typeof exact.symbol.color == "string") { |
---|
637 | selem.setAttribute("color", exact.symbol.color); |
---|
638 | } |
---|
639 | if (typeof exact.symbol.outline == "string") { |
---|
640 | selem.setAttribute("outline", exact.symbol.outline); |
---|
641 | } |
---|
642 | if (typeof exact.symbol.overlap == "string") { |
---|
643 | selem.setAttribute("overlap", exact.symbol.overlap); |
---|
644 | } |
---|
645 | if (typeof exact.symbol.shadow == "string") { |
---|
646 | selem.setAttribute("shadow", exact.symbol.shadow); |
---|
647 | } |
---|
648 | if (typeof exact.symbol.transparency == "number") { |
---|
649 | selem.setAttribute("transparency", exact.symbol.transparency); |
---|
650 | } |
---|
651 | //if (typeof exact.symbol.type == "string") |
---|
652 | // selem.setAttribute("type", exact.symbol.type); |
---|
653 | if (typeof exact.symbol.usecentroid == "string") { |
---|
654 | selem.setAttribute("usecentroid", exact.symbol.usecentroid); |
---|
655 | } |
---|
656 | if (typeof exact.symbol.width == "number") { |
---|
657 | selem.setAttribute("width", exact.symbol.width); |
---|
658 | } |
---|
659 | |
---|
660 | eelem.appendChild(selem); |
---|
661 | } |
---|
662 | } |
---|
663 | } // for each exact |
---|
664 | } |
---|
665 | }, |
---|
666 | |
---|
667 | |
---|
668 | addSimpleLabelRenderer: function(renderElem, renderer) { |
---|
669 | renderElem.setAttribute("field", renderer.field); |
---|
670 | var keys = ['featureweight', 'howmanylabels', 'labelbufferratio', |
---|
671 | 'labelpriorities', 'labelweight', 'linelabelposition', |
---|
672 | 'rotationalangles']; |
---|
673 | for (var i=0, len=keys.length; i<len; i++) { |
---|
674 | var key = keys[i]; |
---|
675 | if (renderer[key]) { |
---|
676 | renderElem.setAttribute(key, renderer[key]); |
---|
677 | } |
---|
678 | } |
---|
679 | |
---|
680 | if (renderer.symbol.type == "text") { |
---|
681 | var symbol = renderer.symbol; |
---|
682 | var selem = this.createElementNS("", "TEXTSYMBOL"); |
---|
683 | renderElem.appendChild(selem); |
---|
684 | |
---|
685 | var keys = this.fontStyleKeys; |
---|
686 | for (var i=0, len=keys.length; i<len; i++) { |
---|
687 | var key = keys[i]; |
---|
688 | if (symbol[key]) { |
---|
689 | selem.setAttribute(key, renderer[key]); |
---|
690 | } |
---|
691 | } |
---|
692 | } |
---|
693 | }, |
---|
694 | |
---|
695 | writePolygonGeometry: function(polygon) { |
---|
696 | if (!(polygon instanceof OpenLayers.Geometry.Polygon)) { |
---|
697 | throw { |
---|
698 | message:'Cannot write polygon geometry to ArcXML with an ' + |
---|
699 | polygon.CLASS_NAME + ' object.', |
---|
700 | geometry: polygon |
---|
701 | }; |
---|
702 | } |
---|
703 | |
---|
704 | var polyElem = this.createElementNS("", "POLYGON"); |
---|
705 | |
---|
706 | for (var ln=0, lnlen=polygon.components.length; ln<lnlen; ln++) { |
---|
707 | var ring = polygon.components[ln]; |
---|
708 | var ringElem = this.createElementNS("", "RING"); |
---|
709 | |
---|
710 | for (var rn=0, rnlen=ring.components.length; rn<rnlen; rn++) { |
---|
711 | var point = ring.components[rn]; |
---|
712 | var pointElem = this.createElementNS("", "POINT"); |
---|
713 | |
---|
714 | pointElem.setAttribute("x", point.x); |
---|
715 | pointElem.setAttribute("y", point.y); |
---|
716 | |
---|
717 | ringElem.appendChild(pointElem); |
---|
718 | } |
---|
719 | |
---|
720 | polyElem.appendChild(ringElem); |
---|
721 | } |
---|
722 | |
---|
723 | return polyElem; |
---|
724 | }, |
---|
725 | |
---|
726 | /** |
---|
727 | * Method: parseResponse |
---|
728 | * Take an ArcXML response, and parse in into this object's internal properties. |
---|
729 | * |
---|
730 | * Parameters: |
---|
731 | * data - {String} or {DOMElement} The ArcXML response, as either a string or the |
---|
732 | * top level DOMElement of the response. |
---|
733 | */ |
---|
734 | parseResponse: function(data) { |
---|
735 | if(typeof data == "string") { |
---|
736 | var newData = new OpenLayers.Format.XML(); |
---|
737 | data = newData.read(data); |
---|
738 | } |
---|
739 | var response = new OpenLayers.Format.ArcXML.Response(); |
---|
740 | |
---|
741 | var errorNode = data.getElementsByTagName("ERROR"); |
---|
742 | |
---|
743 | if (errorNode != null && errorNode.length > 0) { |
---|
744 | response.error = this.getChildValue(errorNode, "Unknown error."); |
---|
745 | } else { |
---|
746 | var responseNode = data.getElementsByTagName("RESPONSE"); |
---|
747 | |
---|
748 | if (responseNode == null || responseNode.length == 0) { |
---|
749 | response.error = "No RESPONSE tag found in ArcXML response."; |
---|
750 | return response; |
---|
751 | } |
---|
752 | |
---|
753 | var rtype = responseNode[0].firstChild.nodeName; |
---|
754 | if (rtype == "#text") { |
---|
755 | rtype = responseNode[0].firstChild.nextSibling.nodeName; |
---|
756 | } |
---|
757 | |
---|
758 | if (rtype == "IMAGE") { |
---|
759 | var envelopeNode = data.getElementsByTagName("ENVELOPE"); |
---|
760 | var outputNode = data.getElementsByTagName("OUTPUT"); |
---|
761 | |
---|
762 | if (envelopeNode == null || envelopeNode.length == 0) { |
---|
763 | response.error = "No ENVELOPE tag found in ArcXML response."; |
---|
764 | } else if (outputNode == null || outputNode.length == 0) { |
---|
765 | response.error = "No OUTPUT tag found in ArcXML response."; |
---|
766 | } else { |
---|
767 | var envAttr = this.parseAttributes(envelopeNode[0]); |
---|
768 | var outputAttr = this.parseAttributes(outputNode[0]); |
---|
769 | |
---|
770 | if (typeof outputAttr.type == "string") { |
---|
771 | response.image = { |
---|
772 | envelope: envAttr, |
---|
773 | output: { |
---|
774 | type: outputAttr.type, |
---|
775 | data: this.getChildValue(outputNode[0]) |
---|
776 | } |
---|
777 | }; |
---|
778 | } else { |
---|
779 | response.image = { envelope: envAttr, output: outputAttr }; |
---|
780 | } |
---|
781 | } |
---|
782 | } else if (rtype == "FEATURES") { |
---|
783 | var features = responseNode[0].getElementsByTagName("FEATURES"); |
---|
784 | |
---|
785 | // get the feature count |
---|
786 | var featureCount = features[0].getElementsByTagName("FEATURECOUNT"); |
---|
787 | response.features.featurecount = featureCount[0].getAttribute("count"); |
---|
788 | |
---|
789 | if (response.features.featurecount > 0) { |
---|
790 | // get the feature envelope |
---|
791 | var envelope = features[0].getElementsByTagName("ENVELOPE"); |
---|
792 | response.features.envelope = this.parseAttributes(envelope[0], typeof(0)); |
---|
793 | |
---|
794 | // get the field values per feature |
---|
795 | var featureList = features[0].getElementsByTagName("FEATURE"); |
---|
796 | for (var fn = 0; fn < featureList.length; fn++) { |
---|
797 | var feature = new OpenLayers.Feature.Vector(); |
---|
798 | var fields = featureList[fn].getElementsByTagName("FIELD"); |
---|
799 | |
---|
800 | for (var fdn = 0; fdn < fields.length; fdn++) { |
---|
801 | var fieldName = fields[fdn].getAttribute("name"); |
---|
802 | var fieldValue = fields[fdn].getAttribute("value"); |
---|
803 | feature.attributes[ fieldName ] = fieldValue; |
---|
804 | } |
---|
805 | |
---|
806 | var geom = featureList[fn].getElementsByTagName("POLYGON"); |
---|
807 | |
---|
808 | if (geom.length > 0) { |
---|
809 | // if there is a polygon, create an openlayers polygon, and assign |
---|
810 | // it to the .geometry property of the feature |
---|
811 | var ring = geom[0].getElementsByTagName("RING"); |
---|
812 | |
---|
813 | var polys = []; |
---|
814 | for (var rn = 0; rn < ring.length; rn++) { |
---|
815 | var linearRings = []; |
---|
816 | linearRings.push(this.parsePointGeometry(ring[rn])); |
---|
817 | |
---|
818 | var holes = ring[rn].getElementsByTagName("HOLE"); |
---|
819 | for (var hn = 0; hn < holes.length; hn++) { |
---|
820 | linearRings.push(this.parsePointGeometry(holes[hn])); |
---|
821 | } |
---|
822 | holes = null; |
---|
823 | polys.push(new OpenLayers.Geometry.Polygon(linearRings)); |
---|
824 | linearRings = null; |
---|
825 | } |
---|
826 | ring = null; |
---|
827 | |
---|
828 | if (polys.length == 1) { |
---|
829 | feature.geometry = polys[0]; |
---|
830 | } else |
---|
831 | { |
---|
832 | feature.geometry = new OpenLayers.Geometry.MultiPolygon(polys); |
---|
833 | } |
---|
834 | } |
---|
835 | |
---|
836 | response.features.feature.push(feature); |
---|
837 | } |
---|
838 | } |
---|
839 | } else { |
---|
840 | response.error = "Unidentified response type."; |
---|
841 | } |
---|
842 | } |
---|
843 | return response; |
---|
844 | }, |
---|
845 | |
---|
846 | |
---|
847 | /** |
---|
848 | * Method: parseAttributes |
---|
849 | * |
---|
850 | * Parameters: |
---|
851 | * node - {<DOMElement>} An element to parse attributes from. |
---|
852 | * |
---|
853 | * Returns: |
---|
854 | * {Object} An attributes object, with properties set to attribute values. |
---|
855 | */ |
---|
856 | parseAttributes: function(node,type) { |
---|
857 | var attributes = {}; |
---|
858 | for(var attr = 0; attr < node.attributes.length; attr++) { |
---|
859 | if (type == "number") { |
---|
860 | attributes[node.attributes[attr].nodeName] = parseFloat(node.attributes[attr].nodeValue); |
---|
861 | } else { |
---|
862 | attributes[node.attributes[attr].nodeName] = node.attributes[attr].nodeValue; |
---|
863 | } |
---|
864 | } |
---|
865 | return attributes; |
---|
866 | }, |
---|
867 | |
---|
868 | |
---|
869 | /** |
---|
870 | * Method: parsePointGeometry |
---|
871 | * |
---|
872 | * Parameters: |
---|
873 | * node - {<DOMElement>} An element to parse <COORDS> or <POINT> arcxml data from. |
---|
874 | * |
---|
875 | * Returns: |
---|
876 | * {OpenLayers.Geometry.LinearRing} A linear ring represented by the node's points. |
---|
877 | */ |
---|
878 | parsePointGeometry: function(node) { |
---|
879 | var ringPoints = []; |
---|
880 | var coords = node.getElementsByTagName("COORDS"); |
---|
881 | |
---|
882 | if (coords.length > 0) { |
---|
883 | // if coords is present, it's the only coords item |
---|
884 | var coordArr = this.getChildValue(coords[0]); |
---|
885 | coordArr = coordArr.split(/;/); |
---|
886 | for (var cn = 0; cn < coordArr.length; cn++) { |
---|
887 | var coordItems = coordArr[cn].split(/ /); |
---|
888 | ringPoints.push(new OpenLayers.Geometry.Point(parseFloat(coordItems[0]), parseFloat(coordItems[1]))); |
---|
889 | } |
---|
890 | coords = null; |
---|
891 | } else { |
---|
892 | var point = node.getElementsByTagName("POINT"); |
---|
893 | if (point.length > 0) { |
---|
894 | for (var pn = 0; pn < point.length; pn++) { |
---|
895 | ringPoints.push( |
---|
896 | new OpenLayers.Geometry.Point( |
---|
897 | parseFloat(point[pn].getAttribute("x")), |
---|
898 | parseFloat(point[pn].getAttribute("y")) |
---|
899 | ) |
---|
900 | ); |
---|
901 | } |
---|
902 | } |
---|
903 | point = null; |
---|
904 | } |
---|
905 | |
---|
906 | return new OpenLayers.Geometry.LinearRing(ringPoints); |
---|
907 | }, |
---|
908 | |
---|
909 | CLASS_NAME: "OpenLayers.Format.ArcXML" |
---|
910 | }); |
---|
911 | |
---|
912 | OpenLayers.Format.ArcXML.Request = OpenLayers.Class({ |
---|
913 | initialize: function(params) { |
---|
914 | var defaults = { |
---|
915 | get_image: { |
---|
916 | properties: { |
---|
917 | background: null, |
---|
918 | /*{ |
---|
919 | color: { r:255, g:255, b:255 }, |
---|
920 | transcolor: null |
---|
921 | },*/ |
---|
922 | draw: true, |
---|
923 | envelope: { |
---|
924 | minx: 0, |
---|
925 | miny: 0, |
---|
926 | maxx: 0, |
---|
927 | maxy: 0 |
---|
928 | }, |
---|
929 | featurecoordsys: { |
---|
930 | id:0, |
---|
931 | string:"", |
---|
932 | datumtransformid:0, |
---|
933 | datumtransformstring:"" |
---|
934 | }, |
---|
935 | filtercoordsys:{ |
---|
936 | id:0, |
---|
937 | string:"", |
---|
938 | datumtransformid:0, |
---|
939 | datumtransformstring:"" |
---|
940 | }, |
---|
941 | imagesize:{ |
---|
942 | height:0, |
---|
943 | width:0, |
---|
944 | dpi:96, |
---|
945 | printheight:0, |
---|
946 | printwidth:0, |
---|
947 | scalesymbols:false |
---|
948 | }, |
---|
949 | layerlist:[], |
---|
950 | /* no support for legends */ |
---|
951 | output:{ |
---|
952 | baseurl:"", |
---|
953 | legendbaseurl:"", |
---|
954 | legendname:"", |
---|
955 | legendpath:"", |
---|
956 | legendurl:"", |
---|
957 | name:"", |
---|
958 | path:"", |
---|
959 | type:"jpg", |
---|
960 | url:"" |
---|
961 | } |
---|
962 | } |
---|
963 | }, |
---|
964 | |
---|
965 | get_feature: { |
---|
966 | layer: "", |
---|
967 | query: { |
---|
968 | isspatial: false, |
---|
969 | featurecoordsys: { |
---|
970 | id:0, |
---|
971 | string:"", |
---|
972 | datumtransformid:0, |
---|
973 | datumtransformstring:"" |
---|
974 | }, |
---|
975 | filtercoordsys: { |
---|
976 | id:0, |
---|
977 | string:"", |
---|
978 | datumtransformid:0, |
---|
979 | datumtransformstring:"" |
---|
980 | }, |
---|
981 | buffer:0, |
---|
982 | where:"", |
---|
983 | spatialfilter: { |
---|
984 | relation: "envelope_intersection", |
---|
985 | envelope: null |
---|
986 | } |
---|
987 | } |
---|
988 | }, |
---|
989 | |
---|
990 | environment: { |
---|
991 | separators: { |
---|
992 | cs:" ", |
---|
993 | ts:";" |
---|
994 | } |
---|
995 | }, |
---|
996 | |
---|
997 | layer: [], |
---|
998 | workspaces: [] |
---|
999 | }; |
---|
1000 | |
---|
1001 | return OpenLayers.Util.extend(this, defaults); |
---|
1002 | }, |
---|
1003 | |
---|
1004 | CLASS_NAME: "OpenLayers.Format.ArcXML.Request" |
---|
1005 | }); |
---|
1006 | |
---|
1007 | OpenLayers.Format.ArcXML.Response = OpenLayers.Class({ |
---|
1008 | initialize: function(params) { |
---|
1009 | var defaults = { |
---|
1010 | image: { |
---|
1011 | envelope:null, |
---|
1012 | output:'' |
---|
1013 | }, |
---|
1014 | |
---|
1015 | features: { |
---|
1016 | featurecount: 0, |
---|
1017 | envelope: null, |
---|
1018 | feature: [] |
---|
1019 | }, |
---|
1020 | |
---|
1021 | error:'' |
---|
1022 | }; |
---|
1023 | |
---|
1024 | return OpenLayers.Util.extend(this, defaults); |
---|
1025 | }, |
---|
1026 | |
---|
1027 | CLASS_NAME: "OpenLayers.Format.ArcXML.Response" |
---|
1028 | }); |
---|