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<?php |
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/** |
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* LayerFeatues Widget class |
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* |
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* @project GeoDan OWT Chart |
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* @revision $Id: LayerFeatures.widget.php,v 1.11 2004/10/14 18:19:15 pspencer Exp $ |
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* @purpose LayerFeatures Widget class puts the features of a layer |
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* into a shared resource for the use in a table widget |
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* @author DM Solutions Group (dev@dmsolutions.ca) |
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* @copyright |
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* <b>Copyright (c) 2004 DM Solutions Group Inc.</b> |
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* Permission is hereby granted, free of charge, to any person obtaining a |
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* copy of this software and associated documentation files (the "Software"), |
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* to deal in the Software without restriction, including without limitation |
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* the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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* and/or sell copies of the Software, and to permit persons to whom the |
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* Software is furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included |
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* in all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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* DEALINGS IN THE SOFTWARE. |
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*/ |
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include_once(dirname(__FILE__)."/../Widget.php"); |
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include_once( dirname(__FILE__)."/../LayerAttributes.php" ); |
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|
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/** |
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* LayerFeatures Widget |
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* |
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* @desc a widget that extracts the features of a map layer and inserts it |
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* into a SharedResource. |
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*/ |
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class LayerFeatures extends CWCWidget |
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{ |
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/* the name of the shared resource to dump the results into */ |
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var $mszSharedResourceName; |
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|
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// the name of the layer template mapfile |
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var $mszLayerTemplateFile; |
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|
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/** |
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* LayerFeatures |
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* |
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* Constructor method for the LayerFeatures widget. |
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*/ |
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function LayerFeatures() |
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{ |
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// invoke constructor of parent |
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parent::CWCWidget(); |
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|
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// set the priority to low so that it is processed almost last |
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$this->mnPriority = PRIORITY_LAST; |
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|
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// set the description for this widget |
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$this->szWidgetDescription = <<<EOT |
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The LayerFeatures widget gets the contents of a mapfile layer and adds an array to |
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a SharedResource widget in a format suitable for feeding a table widget. |
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The layer to process can be passed in the url as "selectedlayers" or be |
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set in the layer's metadata. |
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EOT; |
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$this->maAttributes["SHAREDRESOURCENAME"] = |
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new StringAttribute( "SHAREDRESOURCENAME", true ); |
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|
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$this->maAttributes["LAYERTEMPLATEFILE"] = |
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new StringAttribute( "LAYERTEMPLATEFILE", true ); |
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$this->mnMaturityLevel = MATURITY_BETA; |
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} |
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|
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/** |
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* initialize respectable defaults |
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*/ |
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function InitDefaults() |
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{ |
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parent::InitDefaults(); |
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|
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if ( isset( $this->maParams["SHAREDRESOURCENAME"] ) ) |
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{ |
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$this->mszSharedResourceName = |
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$this->maParams["SHAREDRESOURCENAME"]; |
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} |
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if ( isset( $this->maParams["LAYERTEMPLATEFILE"] ) ) |
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{ |
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$this->mszLayerTemplateFile = |
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$this->maParams["LAYERTEMPLATEFILE"]; |
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} |
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} |
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|
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/** |
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* return an array of HTML variables to include in the page |
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*/ |
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function GetHTMLHiddenVariables() |
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{ |
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$aReturn = array(); |
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$szVariable = 'WFS_FILTER'; |
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$szValue = "<INPUT TYPE=hidden NAME=$szVariable VALUE=\"". |
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$this->getVar("WFS_FILTER")."\">\n"; |
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//$szValue = "<INPUT TYPE=text NAME=$szVariable VALUE=\"%3Cor%3E%3CPropertyIsEqualTo%3E%3CPropertyName%3EDIRNAAM%3C%2FPropertyName%3E%3CLiteral%3ELimburg%3C%2FLiteral%3E%3C%2FPropertyIsEqualTo%3E%3CPropertyIsEqualTo%3E%3CPropertyName%3EDIRNAAM%3C%2FPropertyName%3E%3CLiteral%3EZeeland%3C%2FLiteral%3E%3C%2FPropertyIsEqualTo%3E%3C%2For%3E\">\n"; |
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$aReturn[$szVariable] = $szValue; |
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$szVariable = 'WFS_SELECTED_LAYER'; |
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$szValue = "<INPUT TYPE=hidden NAME=$szVariable VALUE=\"". |
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$this->getVar("WFS_SELECTED_LAYER")."\">\n"; |
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$aReturn[$szVariable] = $szValue; |
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$szVariable = 'LF_CLASS_FILTER'; |
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$szValue = "<INPUT TYPE=hidden NAME=$szVariable VALUE=\"". |
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$this->getVar("LF_CLASS_FILTER")."\">\n"; |
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$aReturn[$szVariable] = $szValue; |
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return $aReturn; |
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} |
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|
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function GetJavascriptOnLoadFunctions() |
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{ |
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$aReturn = array(); |
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$aReturn = parent::GetJavascriptOnLoadFunctions(); |
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$szJsFunctionName = "readSRtoJS"; |
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$szFunction = "$szJsFunctionName();\n"; |
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$aReturn[$szJsFunctionName] = $szFunction; |
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return $aReturn; |
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} |
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function GetJavascriptVariables() |
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{ |
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$aReturn = array(); |
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$aReturn = parent::GetJavascriptVariables(); |
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$aReturn['gaxSRFeatures'] = "var gaxSRFeatures = new Array();\n"; |
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return $aReturn; |
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} |
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|
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/** |
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* Get all the javascript functions |
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* shared resource. |
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*/ |
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function GetJavascriptFunctions() |
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{ |
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$aReturn = array(); |
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// loop and build the javascript array |
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$szJSArray = ''; |
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$nCount = count( $this->maSharedResourceWidgets[$this-> |
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mszSharedResourceName]->maszContents ); |
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for( $i=0; $i<$nCount; $i++ ) |
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{ |
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// create a new field array |
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$szJSArray .= 'gaxSRFeatures['.$i.'] = new Array();'."\n"; |
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|
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// loop for each field |
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$j=0; |
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foreach( $this->maSharedResourceWidgets[$this-> |
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mszSharedResourceName]->maszContents[$i] as |
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$key=>$value ) |
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{ |
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// create a new key value array for this field and populate |
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$szJSArray .= 'gaxSRFeatures['.$i.']['.$j.'] = new Array();'."\n"; |
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$szJSArray .= 'gaxSRFeatures['.$i.']['.$j.'][0] = "'.$key.'";'."\n"; |
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$szJSArray .= 'gaxSRFeatures['.$i.']['.$j.'][1] = "'.$value.'";'."\n"; |
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$j++; |
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} |
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} |
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// add an on load function to make the shared resource into a javascript var |
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$szJsFunctionName = "readSRtoJS"; |
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$szFunction = <<<EOT |
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/** |
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* {$szJsFunctionName} |
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* Convert the shared resource into a javascript array |
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*/ |
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function {$szJsFunctionName}() |
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{ |
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// convert the SR to JS array |
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{$szJSArray} |
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// return |
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return; |
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} |
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EOT; |
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$aReturn[$szJsFunctionName] = $szFunction; |
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return $aReturn; |
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} |
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|
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/** |
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* Parse the layer and create the necessary entries in the |
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* shared resource. |
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*/ |
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function ParseURL() |
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{ |
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// set the timeout |
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set_time_limit( 0 ); |
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// set shared resource variable |
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$srName = $this->mszSharedResourceName; |
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// set the map object |
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$oMap = $this->moMapObject->oMap; |
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// check of the layer has been passed on the url |
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if( $this->isVarSet( "WFS_SELECTED_LAYER" ) && |
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strlen( $this->getVar("WFS_SELECTED_LAYER") ) > 0 ) |
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{ |
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$szSelectedLayer = $this->getVar("WFS_SELECTED_LAYER"); |
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} |
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else |
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{ |
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// loop through the layers and check for metadata |
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for( $i=0; $i<$oMap->numlayers; $i++ ) |
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{ |
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// get layer object and check metadata |
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$oLayer = $oMap->getlayer( $i ); |
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if ( $oLayer->getmetadata("selected") == 1 ) |
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{ |
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$szSelectedLayer = $oLayer->name; |
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break; |
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} |
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} |
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// return an empty array to the shared resource |
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if ( !isset( $szSelectedLayer ) ) |
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{ |
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$this->maSharedResourceWidgets[$srName]->maszContents = array(); |
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return true; |
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} |
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} |
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// check if the layer name exists |
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if ( strlen( $szSelectedLayer ) <= 0 ) |
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{ |
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$this->maSharedResourceWidgets[$srName]->maszContents = array(); |
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return true; |
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} |
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|
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// get the layer object |
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if ( $this->isVarSet( 'LF_CLASS_FILTER' ) && ($this->getVar('LF_CLASS_FILTER') != "")) |
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{ |
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$oLayer = $this->getWMSLayer( $szSelectedLayer ); |
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} |
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// set wfs_filter |
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if ( $this->isVarSet( "WFS_FILTER" ) && |
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strlen( $this->getVar("WFS_FILTER") ) > 0 ) |
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{ |
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$oLayer->setmetadata( 'wfs_filter', |
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urldecode( $this->getVar("WFS_FILTER") ) ); |
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} |
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|
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// build array of attributes to return |
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$aszAttributes = array(); |
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|
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// get and re-order the results for the shared resource |
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$aszTmpResults = array(); |
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$aszResults = GetLayerFeatures( $oMap, $oLayer, $aszAttributes ); |
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// get the layer's features and push them into shared resource |
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$this->maSharedResourceWidgets[$srName]->maszContents = $aszResults; |
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// return success |
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return true; |
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} |
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function getWMSLayer( $szSelectedLayer ) |
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{ |
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// init vars |
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$oMap = $this->moMapObject->oMap; |
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$szTempLayerName = 'layer_features_widget_tmp'; |
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$szClassItem = ''; |
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$szClassExpression = ''; |
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|
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// get the class item and expression |
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if ( $this->isVarSet( 'LF_CLASS_FILTER' ) ) |
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{ |
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$aszClass = explode( ",", urldecode( $this->getVar( 'LF_CLASS_FILTER' ) ) ); |
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if ( isset( $aszClass[0] ) ) |
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{ |
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$szClassItem = $aszClass[0]; |
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} |
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if ( isset( $aszClass[1] ) ) |
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{ |
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$szClassExpression = $aszClass[1]; |
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} |
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} |
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|
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// check if the temp layer exists |
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$aszMapLayers = $oMap->getAllLayerNames(); |
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if ( in_array( $szTempLayerName, $aszMapLayers ) ) |
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{ |
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// get layer |
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$oLayer = $oMap->getLayerByName( $szTempLayerName ); |
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} |
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else |
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{ |
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// create layer from template layer |
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$oTemplateMap = ms_newMapObj( $this->mszLayerTemplateFile ); |
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$oTemplateLayer = $oTemplateMap->getLayer( 0 ); |
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$oLayer = ms_newLayerObj( $oMap, $oTemplateLayer ); |
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$oLayer->set( 'name', $szTempLayerName ); |
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|
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} |
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|
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// update necessary info |
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$oLayer->set( 'classitem', $szClassItem ); |
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$oLayer->setmetadata( 'wms_name', $szSelectedLayer ); |
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$oLayer->setmetadata( 'wms_title', $szSelectedLayer ); |
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$oLayer->setmetadata( 'wms_sld_body', 'AUTO' ); |
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|
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// get the hilite class and set expression |
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$nCount = $oLayer->numclasses; |
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for( $i=0; $i<$nCount; $i++ ) |
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{ |
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$oClass = $oLayer->getclass($i); |
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if ( strtolower( $oClass->name ) == 'hilite' ) |
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{ |
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$oClass->setexpression( $szClassExpression ); |
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break; |
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} |
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} |
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|
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// return ponter to new layer |
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return $oLayer; |
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} |
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} |
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|
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?> |
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