1 | /** |
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2 | * Copyright (c) 2008-2010 The Open Source Geospatial Foundation |
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3 | * |
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4 | * Published under the BSD license. |
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5 | * See http://svn.geoext.org/core/trunk/geoext/license.txt for the full text |
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6 | * of the license. |
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7 | */ |
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8 | Ext.namespace("GeoExt.data"); |
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9 | |
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10 | /** api: (define) |
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11 | * module = GeoExt.data |
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12 | * class = PrintProvider |
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13 | * base_link = `Ext.util.Observable <http://dev.sencha.com/deploy/dev/docs/?class=Ext.util.Observable>`_ |
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14 | */ |
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15 | |
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16 | /** api: example |
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17 | * Minimal code to print as much of the current map extent as possible as |
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18 | * soon as the print service capabilities are loaded, using the first layout |
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19 | * reported by the print service: |
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20 | * |
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21 | * .. code-block:: javascript |
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22 | * |
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23 | * var mapPanel = new GeoExt.MapPanel({ |
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24 | * renderTo: "mappanel", |
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25 | * layers: [new OpenLayers.Layer.WMS("wms", "/geoserver/wms", |
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26 | * {layers: "topp:tasmania_state_boundaries"})], |
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27 | * center: [146.56, -41.56], |
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28 | * zoom: 7 |
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29 | * }); |
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30 | * var printProvider = new GeoExt.data.PrintProvider({ |
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31 | * url: "/geoserver/pdf", |
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32 | * listeners: { |
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33 | * "loadcapabilities": function() { |
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34 | * var printPage = new GeoExt.data.PrintPage({ |
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35 | * printProvider: printProvider |
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36 | * }); |
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37 | * printPage.fit(mapPanel, true); |
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38 | * printProvider.print(mapPanel, printPage); |
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39 | * } |
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40 | * } |
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41 | * }); |
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42 | */ |
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43 | |
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44 | /** api: constructor |
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45 | * .. class:: PrintProvider |
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46 | * |
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47 | * Provides an interface to a Mapfish or GeoServer print module. For printing, |
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48 | * one or more instances of :class:`GeoExt.data.PrintPage` are also required |
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49 | * to tell the PrintProvider about the scale and extent (and optionally |
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50 | * rotation) of the page(s) we want to print. |
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51 | */ |
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52 | GeoExt.data.PrintProvider = Ext.extend(Ext.util.Observable, { |
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53 | |
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54 | /** api: config[url] |
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55 | * ``String`` Base url of the print service. Only required if |
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56 | * ``capabilities`` is not provided. This |
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57 | * is usually something like http://path/to/mapfish/print for Mapfish, |
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58 | * and http://path/to/geoserver/pdf for GeoServer with the printing |
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59 | * extension installed. This property requires that the print service is |
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60 | * at the same origin as the application (or accessible via proxy). |
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61 | */ |
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62 | |
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63 | /** private: property[url] |
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64 | * ``String`` Base url of the print service. Will always have a trailing |
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65 | * "/". |
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66 | */ |
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67 | url: null, |
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68 | |
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69 | /** api: config[autoLoad] |
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70 | * ``Boolean`` If set to true, the capabilities will be loaded upon |
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71 | * instance creation, and ``loadCapabilities`` does not need to be called |
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72 | * manually. Setting this when ``capabilities`` and no ``url`` is provided |
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73 | * has no effect. Default is false. |
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74 | */ |
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75 | |
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76 | /** api: config[capabilities] |
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77 | * ``Object`` Capabilities of the print service. Only required if ``url`` |
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78 | * is not provided. This is the object returned by the ``info.json`` |
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79 | * endpoint of the print service, and is usually obtained by including a |
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80 | * script tag pointing to |
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81 | * http://path/to/printservice/info.json?var=myvar in the head of the |
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82 | * html document, making the capabilities accessible as ``window.myvar``. |
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83 | * This property should be used when no local print service or proxy is |
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84 | * available, or when you do not listen for the ``loadcapabilities`` |
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85 | * events before creating components that require the PrintProvider's |
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86 | * capabilities to be available. |
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87 | */ |
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88 | |
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89 | /** private: property[capabilities] |
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90 | * ``Object`` Capabilities as returned from the print service. |
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91 | */ |
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92 | capabilities: null, |
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93 | |
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94 | /** api: config[method] |
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95 | * ``String`` Either ``POST`` or ``GET`` (case-sensitive). Method to use |
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96 | * when sending print requests to the servlet. If the print service is at |
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97 | * the same origin as the application (or accessible via proxy), then |
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98 | * ``POST`` is recommended. Use ``GET`` when accessing a remote print |
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99 | * service with no proxy available, but expect issues with character |
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100 | * encoding and URLs exceeding the maximum length. Default is ``POST``. |
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101 | */ |
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102 | |
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103 | /** private: property[method] |
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104 | * ``String`` Either ``POST`` or ``GET`` (case-sensitive). Method to use |
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105 | * when sending print requests to the servlet. |
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106 | */ |
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107 | method: "POST", |
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108 | |
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109 | /** api: config[customParams] |
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110 | * ``Object`` Key-value pairs of custom data to be sent to the print |
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111 | * service. Optional. This is e.g. useful for complex layout definitions |
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112 | * on the server side that require additional parameters. |
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113 | */ |
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114 | |
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115 | /** api: property[customParams] |
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116 | * ``Object`` Key-value pairs of custom data to be sent to the print |
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117 | * service. Optional. This is e.g. useful for complex layout definitions |
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118 | * on the server side that require additional parameters. |
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119 | */ |
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120 | customParams: null, |
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121 | |
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122 | /** api: config[baseParams] |
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123 | * ``Object`` Key-value pairs of base params to be add to every |
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124 | * request to the service. Optional. |
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125 | */ |
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126 | |
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127 | /** api: property[scales] |
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128 | * ``Ext.data.JsonStore`` read-only. A store representing the scales |
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129 | * available. |
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130 | * |
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131 | * Fields of records in this store: |
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132 | * |
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133 | * * name - ``String`` the name of the scale |
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134 | * * value - ``Float`` the scale denominator |
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135 | */ |
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136 | scales: null, |
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137 | |
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138 | /** api: property[dpis] |
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139 | * ``Ext.data.JsonStore`` read-only. A store representing the dpis |
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140 | * available. |
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141 | * |
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142 | * Fields of records in this store: |
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143 | * |
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144 | * * name - ``String`` the name of the dpi |
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145 | * * value - ``Float`` the dots per inch |
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146 | */ |
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147 | dpis: null, |
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148 | |
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149 | /** api: property[layouts] |
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150 | * ``Ext.data.JsonStore`` read-only. A store representing the layouts |
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151 | * available. |
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152 | * |
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153 | * Fields of records in this store: |
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154 | * |
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155 | * * name - ``String`` the name of the layout |
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156 | * * size - ``Object`` width and height of the map in points |
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157 | * * rotation - ``Boolean`` indicates if rotation is supported |
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158 | */ |
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159 | layouts: null, |
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160 | |
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161 | /** api: property[dpi] |
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162 | * ``Ext.data.Record`` the record for the currently used resolution. |
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163 | * Read-only, use ``setDpi`` to set the value. |
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164 | */ |
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165 | dpi: null, |
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166 | |
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167 | /** api: property[layout] |
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168 | * ``Ext.data.Record`` the record of the currently used layout. Read-only, |
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169 | * use ``setLayout`` to set the value. |
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170 | */ |
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171 | layout: null, |
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172 | |
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173 | /** private: method[constructor] |
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174 | * Private constructor override. |
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175 | */ |
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176 | constructor: function(config) { |
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177 | this.initialConfig = config; |
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178 | Ext.apply(this, config); |
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179 | |
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180 | if(!this.customParams) { |
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181 | this.customParams = {}; |
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182 | } |
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183 | |
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184 | this.addEvents( |
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185 | /** api: event[loadcapabilities] |
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186 | * Triggered when the capabilities have finished loading. This |
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187 | * event will only fire when ``capabilities`` is not configured. |
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188 | * |
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189 | * Listener arguments: |
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190 | * |
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191 | * * printProvider - :class:`GeoExt.data.PrintProvider` this |
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192 | * PrintProvider |
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193 | * * capabilities - ``Object`` the capabilities |
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194 | */ |
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195 | "loadcapabilities", |
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196 | |
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197 | /** api: event[layoutchange] |
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198 | * Triggered when the layout is changed. |
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199 | * |
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200 | * Listener arguments: |
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201 | * |
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202 | * * printProvider - :class:`GeoExt.data.PrintProvider` this |
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203 | * PrintProvider |
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204 | * * layout - ``Ext.data.Record`` the new layout |
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205 | */ |
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206 | "layoutchange", |
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207 | |
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208 | /** api: event[dpichange] |
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209 | * Triggered when the dpi value is changed. |
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210 | * |
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211 | * Listener arguments: |
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212 | * |
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213 | * * printProvider - :class:`GeoExt.data.PrintProvider` this |
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214 | * PrintProvider |
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215 | * * dpi - ``Ext.data.Record`` the new dpi record |
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216 | */ |
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217 | "dpichange", |
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218 | |
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219 | /** api: event[beforeprint] |
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220 | * Triggered when the print method is called. |
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221 | * |
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222 | * Listener arguments: |
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223 | * |
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224 | * * printProvider - :class:`GeoExt.data.PrintProvider` this |
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225 | * PrintProvider |
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226 | * * map - ``OpenLayers.Map`` the map being printed |
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227 | * * pages - Array of :class:`GeoExt.data.PrintPage` the print |
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228 | * pages being printed |
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229 | * * options - ``Object`` the options to the print command |
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230 | */ |
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231 | "beforeprint", |
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232 | |
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233 | /** api: event[print] |
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234 | * Triggered when the print document is opened. |
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235 | * |
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236 | * Listener arguments: |
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237 | * |
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238 | * * printProvider - :class:`GeoExt.data.PrintProvider` this |
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239 | * PrintProvider |
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240 | * * url - ``String`` the url of the print document |
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241 | */ |
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242 | "print", |
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243 | |
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244 | /** api: event[printexception] |
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245 | * Triggered when using the ``POST`` method, when the print |
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246 | * backend returns an exception. |
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247 | * |
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248 | * Listener arguments: |
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249 | * |
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250 | * * printProvider - :class:`GeoExt.data.PrintProvider` this |
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251 | * PrintProvider |
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252 | * * response - ``Object`` the response object of the XHR |
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253 | */ |
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254 | "printexception", |
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255 | |
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256 | /** api: event[beforeencodelayer] |
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257 | * Triggered before a layer is encoded. This can be used to |
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258 | * exclude layers from the printing, by having the listener |
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259 | * return false. |
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260 | * |
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261 | * Listener arguments: |
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262 | * |
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263 | * * printProvider - :class:`GeoExt.data.PrintProvider` this |
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264 | * PrintProvider |
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265 | * * layer - ``OpenLayers.Layer`` the layer which is about to be |
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266 | * encoded. |
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267 | */ |
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268 | "beforeencodelayer", |
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269 | |
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270 | /** api: event[encodelayer] |
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271 | * Triggered when a layer is encoded. This can be used to modify |
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272 | * the encoded low-level layer object that will be sent to the |
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273 | * print service. |
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274 | * |
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275 | * Listener arguments: |
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276 | * |
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277 | * * printProvider - :class:`GeoExt.data.PrintProvider` this |
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278 | * PrintProvider |
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279 | * * layer - ``OpenLayers.Layer`` the layer which is about to be |
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280 | * encoded. |
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281 | * * encodedLayer - ``Object`` the encoded layer that will be |
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282 | * sent to the print service. |
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283 | */ |
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284 | "encodelayer" |
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285 | |
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286 | ); |
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287 | |
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288 | GeoExt.data.PrintProvider.superclass.constructor.apply(this, arguments); |
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289 | |
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290 | this.scales = new Ext.data.JsonStore({ |
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291 | root: "scales", |
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292 | sortInfo: {field: "value", direction: "DESC"}, |
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293 | fields: ["name", {name: "value", type: "float"}] |
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294 | }); |
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295 | |
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296 | this.dpis = new Ext.data.JsonStore({ |
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297 | root: "dpis", |
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298 | fields: ["name", {name: "value", type: "float"}] |
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299 | }); |
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300 | |
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301 | this.layouts = new Ext.data.JsonStore({ |
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302 | root: "layouts", |
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303 | fields: [ |
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304 | "name", |
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305 | {name: "size", mapping: "map"}, |
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306 | {name: "rotation", type: "boolean"} |
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307 | ] |
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308 | }); |
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309 | |
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310 | if(config.capabilities) { |
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311 | this.loadStores(); |
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312 | } else { |
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313 | if(this.url.split("/").pop()) { |
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314 | this.url += "/"; |
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315 | } |
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316 | this.initialConfig.autoLoad && this.loadCapabilities(); |
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317 | } |
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318 | }, |
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319 | |
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320 | /** api: method[setLayout] |
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321 | * :param layout: ``Ext.data.Record`` the record of the layout. |
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322 | * |
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323 | * Sets the layout for this printProvider. |
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324 | */ |
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325 | setLayout: function(layout) { |
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326 | this.layout = layout; |
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327 | this.fireEvent("layoutchange", this, layout); |
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328 | }, |
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329 | |
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330 | /** api: method[setDpi] |
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331 | * :param dpi: ``Ext.data.Record`` the dpi record. |
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332 | * |
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333 | * Sets the dpi for this printProvider. |
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334 | */ |
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335 | setDpi: function(dpi) { |
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336 | this.dpi = dpi; |
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337 | this.fireEvent("dpichange", this, dpi); |
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338 | }, |
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339 | |
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340 | /** api: method[print] |
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341 | * :param map: ``GeoExt.MapPanel`` or ``OpenLayers.Map`` The map to print. |
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342 | * :param pages: ``Array`` of :class:`GeoExt.data.PrintPage` or |
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343 | * :class:`GeoExt.data.PrintPage` page(s) to print. |
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344 | * :param options: ``Object`` of additional options, see below. |
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345 | * |
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346 | * Sends the print command to the print service and opens a new window |
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347 | * with the resulting PDF. |
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348 | * |
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349 | * Valid properties for the ``options`` argument: |
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350 | * |
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351 | * * ``legend`` - :class:`GeoExt.LegendPanel` If provided, the legend |
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352 | * will be added to the print document. For the printed result to |
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353 | * look like the LegendPanel, the following ``!legends`` block |
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354 | * should be included in the ``items`` of your page layout in the |
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355 | * print module's configuration file: |
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356 | * |
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357 | * .. code-block:: none |
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358 | * |
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359 | * - !legends |
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360 | * maxIconWidth: 0 |
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361 | * maxIconHeight: 0 |
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362 | * classIndentation: 0 |
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363 | * layerSpace: 5 |
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364 | * layerFontSize: 10 |
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365 | * |
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366 | * * ``overview`` - :class:`OpenLayers.Control.OverviewMap` If provided, |
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367 | * the layers for the overview map in the printout will be taken from |
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368 | * the OverviewMap control. If not provided, the print service will |
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369 | * use the main map's layers for the overview map. Applies only for |
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370 | * layouts configured to print an overview map. |
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371 | */ |
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372 | print: function(map, pages, options) { |
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373 | if(map instanceof GeoExt.MapPanel) { |
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374 | map = map.map; |
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375 | } |
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376 | pages = pages instanceof Array ? pages : [pages]; |
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377 | options = options || {}; |
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378 | if(this.fireEvent("beforeprint", this, map, pages, options) === false) { |
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379 | return; |
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380 | } |
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381 | |
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382 | var jsonData = Ext.apply({ |
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383 | units: map.getUnits(), |
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384 | srs: map.baseLayer.projection.getCode(), |
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385 | layout: this.layout.get("name"), |
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386 | dpi: this.dpi.get("value") |
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387 | }, this.customParams); |
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388 | |
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389 | var pagesLayer = pages[0].feature.layer; |
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390 | var encodedLayers = []; |
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391 | Ext.each(map.layers, function(layer){ |
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392 | if(layer !== pagesLayer && layer.getVisibility() === true) { |
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393 | var enc = this.encodeLayer(layer); |
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394 | enc && encodedLayers.push(enc); |
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395 | } |
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396 | }, this); |
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397 | jsonData.layers = encodedLayers; |
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398 | |
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399 | var encodedPages = []; |
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400 | Ext.each(pages, function(page) { |
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401 | encodedPages.push(Ext.apply({ |
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402 | center: [page.center.lon, page.center.lat], |
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403 | scale: page.scale.get("value"), |
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404 | rotation: page.rotation |
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405 | }, page.customParams)); |
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406 | }, this); |
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407 | jsonData.pages = encodedPages; |
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408 | |
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409 | if (options.overview) { |
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410 | var encodedOverviewLayers = []; |
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411 | Ext.each(options.overview.layers, function(layer) { |
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412 | var enc = this.encodeLayer(layer); |
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413 | enc && encodedOverviewLayers.push(enc); |
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414 | }, this); |
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415 | jsonData.overviewLayers = encodedOverviewLayers; |
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416 | } |
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417 | |
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418 | if(options.legend) { |
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419 | var legend = options.legend; |
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420 | var rendered = legend.rendered; |
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421 | if (!rendered) { |
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422 | legend = legend.cloneConfig({ |
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423 | renderTo: document.body, |
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424 | hidden: true |
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425 | }); |
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426 | } |
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427 | var encodedLegends = []; |
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428 | legend.items.each(function(cmp) { |
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429 | if(!cmp.hidden) { |
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430 | var encFn = this.encoders.legends[cmp.getXType()]; |
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431 | encodedLegends = encodedLegends.concat( |
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432 | encFn.call(this, cmp)); |
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433 | } |
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434 | }, this); |
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435 | if (!rendered) { |
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436 | legend.destroy(); |
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437 | } |
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438 | jsonData.legends = encodedLegends; |
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439 | } |
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440 | |
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441 | if(this.method === "GET") { |
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442 | var url = Ext.urlAppend(this.capabilities.printURL, |
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443 | "spec=" + encodeURIComponent(Ext.encode(jsonData))); |
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444 | window.open(url); |
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445 | this.fireEvent("print", this, url); |
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446 | } else { |
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447 | Ext.Ajax.request({ |
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448 | url: this.capabilities.createURL, |
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449 | jsonData: jsonData, |
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450 | success: function(response) { |
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451 | // In IE, using a Content-disposition: attachment header |
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452 | // may make it hard or impossible to download the pdf due |
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453 | // to security settings. So we'll display the pdf inline. |
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454 | var url = Ext.decode(response.responseText).getURL + |
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455 | (Ext.isIE ? "?inline=true" : ""); |
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456 | if(Ext.isOpera || Ext.isIE) { |
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457 | // Make sure that Opera and IE don't replace the |
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458 | // content tab with the pdf |
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459 | window.open(url); |
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460 | } else { |
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461 | // This avoids popup blockers for all other browsers |
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462 | window.location.href = url; |
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463 | } |
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464 | this.fireEvent("print", this, url); |
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465 | }, |
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466 | failure: function(response) { |
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467 | this.fireEvent("printexception", this, response); |
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468 | }, |
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469 | params: this.initialConfig.baseParams, |
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470 | scope: this |
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471 | }); |
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472 | } |
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473 | }, |
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474 | |
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475 | /** api: method[loadCapabilities] |
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476 | * |
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477 | * Loads the capabilities from the print service. If this instance is |
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478 | * configured with either ``capabilities`` or a ``url`` and ``autoLoad`` |
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479 | * set to true, then this method does not need to be called from the |
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480 | * application. |
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481 | */ |
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482 | loadCapabilities: function() { |
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483 | if (!this.url) { |
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484 | return; |
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485 | } |
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486 | var url = this.url + "info.json"; |
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487 | Ext.Ajax.request({ |
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488 | url: url, |
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489 | method: "GET", |
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490 | disableCaching: false, |
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491 | success: function(response) { |
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492 | this.capabilities = Ext.decode(response.responseText); |
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493 | this.loadStores(); |
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494 | }, |
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495 | params: this.initialConfig.baseParams, |
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496 | scope: this |
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497 | }); |
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498 | }, |
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499 | |
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500 | /** private: method[loadStores] |
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501 | */ |
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502 | loadStores: function() { |
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503 | this.scales.loadData(this.capabilities); |
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504 | this.dpis.loadData(this.capabilities); |
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505 | this.layouts.loadData(this.capabilities); |
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506 | |
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507 | this.setLayout(this.layouts.getAt(0)); |
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508 | this.setDpi(this.dpis.getAt(0)); |
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509 | this.fireEvent("loadcapabilities", this, this.capabilities); |
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510 | }, |
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511 | |
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512 | /** private: method[encodeLayer] |
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513 | * :param layer: ``OpenLayers.Layer`` |
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514 | * :return: ``Object`` |
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515 | * |
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516 | * Encodes a layer for the print service. |
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517 | */ |
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518 | encodeLayer: function(layer) { |
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519 | var encLayer; |
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520 | for(var c in this.encoders.layers) { |
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521 | if(OpenLayers.Layer[c] && layer instanceof OpenLayers.Layer[c]) { |
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522 | if(this.fireEvent("beforeencodelayer", this, layer) === false) { |
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523 | return; |
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524 | } |
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525 | encLayer = this.encoders.layers[c].call(this, layer); |
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526 | this.fireEvent("encodelayer", this, layer, encLayer); |
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527 | break; |
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528 | } |
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529 | } |
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530 | // only return the encLayer object when we have a type. Prevents a |
---|
531 | // fallback on base encoders like HTTPRequest. |
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532 | return (encLayer && encLayer.type) ? encLayer : null; |
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533 | }, |
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534 | |
---|
535 | /** private: method[getAbsoluteUrl] |
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536 | * :param url: ``String`` |
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537 | * :return: ``String`` |
---|
538 | * |
---|
539 | * Converts the provided url to an absolute url. |
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540 | */ |
---|
541 | getAbsoluteUrl: function(url) { |
---|
542 | var a; |
---|
543 | if(Ext.isIE) { |
---|
544 | a = document.createElement("<a href='" + url + "'/>"); |
---|
545 | a.style.display = "none"; |
---|
546 | document.body.appendChild(a); |
---|
547 | a.href = a.href; |
---|
548 | document.body.removeChild(a); |
---|
549 | } else { |
---|
550 | a = document.createElement("a"); |
---|
551 | a.href = url; |
---|
552 | } |
---|
553 | return a.href; |
---|
554 | }, |
---|
555 | |
---|
556 | /** private: property[encoders] |
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557 | * ``Object`` Encoders for all print content |
---|
558 | */ |
---|
559 | encoders: { |
---|
560 | "layers": { |
---|
561 | "WMS": function(layer) { |
---|
562 | var enc = this.encoders.layers.HTTPRequest.call(this, layer); |
---|
563 | Ext.apply(enc, { |
---|
564 | type: 'WMS', |
---|
565 | layers: [layer.params.LAYERS].join(",").split(","), |
---|
566 | format: layer.params.FORMAT, |
---|
567 | styles: [layer.params.STYLES].join(",").split(",") |
---|
568 | }); |
---|
569 | var param; |
---|
570 | for(var p in layer.params) { |
---|
571 | param = p.toLowerCase(); |
---|
572 | if(!layer.DEFAULT_PARAMS[param] && |
---|
573 | "layers,styles,width,height,srs".indexOf(param) == -1) { |
---|
574 | if(!enc.customParams) { |
---|
575 | enc.customParams = {}; |
---|
576 | } |
---|
577 | enc.customParams[p] = layer.params[p]; |
---|
578 | } |
---|
579 | } |
---|
580 | return enc; |
---|
581 | }, |
---|
582 | "OSM": function(layer) { |
---|
583 | var enc = this.encoders.layers.TileCache.call(this, layer); |
---|
584 | return Ext.apply(enc, { |
---|
585 | type: 'OSM', |
---|
586 | baseURL: enc.baseURL.substr(0, enc.baseURL.indexOf("$")), |
---|
587 | extension: "png" |
---|
588 | }); |
---|
589 | }, |
---|
590 | "TMS": function(layer) { |
---|
591 | var enc = this.encoders.layers.TileCache.call(this, layer); |
---|
592 | return Ext.apply(enc, { |
---|
593 | type: 'TMS', |
---|
594 | format: layer.type |
---|
595 | }); |
---|
596 | }, |
---|
597 | "TileCache": function(layer) { |
---|
598 | var enc = this.encoders.layers.HTTPRequest.call(this, layer); |
---|
599 | return Ext.apply(enc, { |
---|
600 | type: 'TileCache', |
---|
601 | layer: layer.layername, |
---|
602 | maxExtent: layer.maxExtent.toArray(), |
---|
603 | tileSize: [layer.tileSize.w, layer.tileSize.h], |
---|
604 | extension: layer.extension, |
---|
605 | resolutions: layer.serverResolutions || layer.resolutions |
---|
606 | }); |
---|
607 | }, |
---|
608 | "KaMapCache": function(layer) { |
---|
609 | var enc = this.encoders.layers.KaMap.call(this, layer); |
---|
610 | return Ext.apply(enc, { |
---|
611 | type: 'KaMapCache', |
---|
612 | // group param is mandatory when using KaMapCache |
---|
613 | group: layer.params['g'], |
---|
614 | metaTileWidth: layer.params['metaTileSize']['w'], |
---|
615 | metaTileHeight: layer.params['metaTileSize']['h'] |
---|
616 | }); |
---|
617 | }, |
---|
618 | "KaMap": function(layer) { |
---|
619 | var enc = this.encoders.layers.HTTPRequest.call(this, layer); |
---|
620 | return Ext.apply(enc, { |
---|
621 | type: 'KaMap', |
---|
622 | map: layer.params['map'], |
---|
623 | extension: layer.params['i'], |
---|
624 | // group param is optional when using KaMap |
---|
625 | group: layer.params['g'] || "", |
---|
626 | maxExtent: layer.maxExtent.toArray(), |
---|
627 | tileSize: [layer.tileSize.w, layer.tileSize.h], |
---|
628 | resolutions: layer.serverResolutions || layer.resolutions |
---|
629 | }); |
---|
630 | }, |
---|
631 | "HTTPRequest": function(layer) { |
---|
632 | return { |
---|
633 | baseURL: this.getAbsoluteUrl(layer.url instanceof Array ? |
---|
634 | layer.url[0] : layer.url), |
---|
635 | opacity: (layer.opacity != null) ? layer.opacity : 1.0, |
---|
636 | singleTile: layer.singleTile |
---|
637 | }; |
---|
638 | }, |
---|
639 | "Image": function(layer) { |
---|
640 | return { |
---|
641 | type: 'Image', |
---|
642 | baseURL: this.getAbsoluteUrl(layer.getURL(layer.extent)), |
---|
643 | opacity: (layer.opacity != null) ? layer.opacity : 1.0, |
---|
644 | extent: layer.extent.toArray(), |
---|
645 | pixelSize: [layer.size.w, layer.size.h], |
---|
646 | name: layer.name |
---|
647 | }; |
---|
648 | }, |
---|
649 | "Vector": function(layer) { |
---|
650 | if(!layer.features.length) { |
---|
651 | return; |
---|
652 | } |
---|
653 | |
---|
654 | var encFeatures = []; |
---|
655 | var encStyles = {}; |
---|
656 | var features = layer.features; |
---|
657 | var featureFormat = new OpenLayers.Format.GeoJSON(); |
---|
658 | var styleFormat = new OpenLayers.Format.JSON(); |
---|
659 | var nextId = 1; |
---|
660 | var styleDict = {}; |
---|
661 | var feature, style, dictKey, dictItem, styleName; |
---|
662 | for(var i=0, len=features.length; i<len; ++i) { |
---|
663 | feature = features[i]; |
---|
664 | style = feature.style || layer.style || |
---|
665 | layer.styleMap.createSymbolizer(feature, |
---|
666 | feature.renderIntent); |
---|
667 | dictKey = styleFormat.write(style); |
---|
668 | dictItem = styleDict[dictKey]; |
---|
669 | if(dictItem) { |
---|
670 | //this style is already known |
---|
671 | styleName = dictItem; |
---|
672 | } else { |
---|
673 | //new style |
---|
674 | styleDict[dictKey] = styleName = nextId++; |
---|
675 | if(style.externalGraphic) { |
---|
676 | encStyles[styleName] = Ext.applyIf({ |
---|
677 | externalGraphic: this.getAbsoluteUrl( |
---|
678 | style.externalGraphic)}, style); |
---|
679 | } else { |
---|
680 | encStyles[styleName] = style; |
---|
681 | } |
---|
682 | } |
---|
683 | var featureGeoJson = featureFormat.extract.feature.call( |
---|
684 | featureFormat, feature); |
---|
685 | |
---|
686 | featureGeoJson.properties = OpenLayers.Util.extend({ |
---|
687 | _gx_style: styleName |
---|
688 | }, featureGeoJson.properties); |
---|
689 | |
---|
690 | encFeatures.push(featureGeoJson); |
---|
691 | } |
---|
692 | |
---|
693 | return { |
---|
694 | type: 'Vector', |
---|
695 | styles: encStyles, |
---|
696 | styleProperty: '_gx_style', |
---|
697 | geoJson: { |
---|
698 | type: "FeatureCollection", |
---|
699 | features: encFeatures |
---|
700 | }, |
---|
701 | name: layer.name, |
---|
702 | opacity: (layer.opacity != null) ? layer.opacity : 1.0 |
---|
703 | }; |
---|
704 | } |
---|
705 | }, |
---|
706 | "legends": { |
---|
707 | "gx_wmslegend": function(legend) { |
---|
708 | var enc = this.encoders.legends.base.call(this, legend); |
---|
709 | var icons = []; |
---|
710 | for(var i=1, len=legend.items.getCount(); i<len; ++i) { |
---|
711 | icons.push(this.getAbsoluteUrl(legend.items.get(i).url)); |
---|
712 | } |
---|
713 | enc[0].classes[0] = { |
---|
714 | name: "", |
---|
715 | icons: icons |
---|
716 | }; |
---|
717 | return enc; |
---|
718 | }, |
---|
719 | "gx_urllegend": function(legend) { |
---|
720 | var enc = this.encoders.legends.base.call(this, legend); |
---|
721 | enc[0].classes.push({ |
---|
722 | name: "", |
---|
723 | icon: this.getAbsoluteUrl(legend.items.get(1).url) |
---|
724 | }); |
---|
725 | return enc; |
---|
726 | }, |
---|
727 | "base": function(legend){ |
---|
728 | return [{ |
---|
729 | name: legend.items.get(0).text, |
---|
730 | classes: [] |
---|
731 | }]; |
---|
732 | } |
---|
733 | } |
---|
734 | } |
---|
735 | |
---|
736 | }); |
---|