| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  * SMW result printer for graphs using graphViz. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  |  * In order to use this printer you need to have both | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  |  * the graphViz library installed on your system and | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  |  * have the graphViz MediaWiki extension installed. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  |  * @file SRF_Graph.php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  |  * @ingroup SemanticResultFormats | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  |  * @licence GNU GPL v2+ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  |  * @author Frank Dengler | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  |  * @author Jeroen De Dauw < [email protected] > | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  | class SRFGraph extends SMWResultPrinter { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  | 	const NODELABEL_DISPLAYTITLE = 'displaytitle'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  | 	public static $NODE_LABELS = [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  | 		self::NODELABEL_DISPLAYTITLE, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  | 	]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  | 	public static $NODE_SHAPES = [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  | 		'box', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  | 		'box3d', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  | 		'circle', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  | 		'component', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  | 		'diamond', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  | 		'doublecircle', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  | 		'doubleoctagon', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  | 		'egg', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  | 		'ellipse', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  | 		'folder', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  | 		'hexagon', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  | 		'house', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  | 		'invhouse', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  | 		'invtrapezium', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  | 		'invtriangle', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  | 		'Mcircle', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  | 		'Mdiamond', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  | 		'Msquare', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  | 		'none', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  | 		'note', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  | 		'octagon', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  | 		'parallelogram', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  | 		'pentagon ', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  | 		'plaintext', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  | 		'point', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  | 		'polygon', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  | 		'rect', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  | 		'rectangle', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  | 		'septagon', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  | 		'square', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  | 		'tab', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  | 		'trapezium', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  | 		'triangle', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  | 		'tripleoctagon', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  | 	]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  | 	protected $m_graphName; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  | 	protected $m_graphLabel; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  | 	protected $m_graphColor; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  | 	protected $m_graphLegend; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  | 	protected $m_graphLink; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  | 	protected $m_rankdir; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  | 	protected $m_graphSize; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  | 	protected $m_labelArray = []; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  | 	protected $m_graphColors = [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  | 		'black', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  | 		'red', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  | 		'green', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  | 		'blue', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  | 		'darkviolet', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  | 		'gold', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  | 		'deeppink', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  | 		'brown', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 |  |  | 		'bisque', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  | 		'darkgreen', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  | 		'yellow', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  | 		'darkblue', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 |  |  | 		'magenta', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  | 		'steelblue2' ]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  | 	protected $m_nameProperty; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 85 |  |  | 	protected $m_nodeShape; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  | 	protected $m_parentRelation; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 |  |  | 	protected $m_wordWrapLimit; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 88 |  |  | 	protected $m_nodeLabel; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 89 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 90 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 91 |  |  | 	 * (non-PHPdoc) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 92 |  |  | 	 * @see SMWResultPrinter::handleParameters() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 93 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 94 |  |  | 	protected function handleParameters( array $params, $outputmode ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 95 |  |  | 		parent::handleParameters( $params, $outputmode ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 96 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 97 |  |  | 		$this->m_graphName = trim( $params['graphname'] ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 98 |  |  | 		$this->m_graphSize = trim( $params['graphsize'] ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 99 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 100 |  |  | 		$this->m_graphLegend = $params['graphlegend']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 101 |  |  | 		$this->m_graphLabel = $params['graphlabel']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 102 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 103 |  |  | 		$this->m_rankdir = strtoupper( trim( $params['arrowdirection'] ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 104 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 105 |  |  | 		$this->m_graphLink = $params['graphlink']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 106 |  |  | 		$this->m_graphColor = $params['graphcolor']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 107 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 108 |  |  | 		$this->m_nameProperty = $params['nameproperty'] === false ? false : trim( $params['nameproperty'] ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 109 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 110 |  |  | 		$this->m_parentRelation = strtolower( trim( $params['relation'] ) ) == 'parent'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 111 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 112 |  |  | 		$this->m_nodeShape = $params['nodeshape']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 113 |  |  | 		$this->m_wordWrapLimit = $params['wordwraplimit']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 114 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 115 |  |  | 		$this->m_nodeLabel = $params['nodelabel']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 116 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 117 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 118 |  |  | 	protected function getResultText( SMWQueryResult $res, $outputmode ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 119 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 120 |  |  | 		if ( !class_exists( 'GraphViz' ) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 121 |  |  | 			&& !class_exists( '\\MediaWiki\\Extension\\GraphViz\\GraphViz' ) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 122 |  |  | 		) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 123 |  |  | 			wfWarn( 'The SRF Graph printer needs the GraphViz extension to be installed.' ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 124 |  |  | 			return ''; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 125 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 126 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 127 |  |  | 		$this->isHTML = true; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 128 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 129 |  |  | 		$graphInput = "digraph $this->m_graphName {"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 130 |  |  | 		if ( $this->m_graphSize != '' ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 131 |  |  | 			$graphInput .= "size=\"$this->m_graphSize\";"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 132 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 133 |  |  | 		if ( $this->m_nodeShape ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 134 |  |  | 			$graphInput .= "node [shape=$this->m_nodeShape];"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 135 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 136 |  |  | 		$graphInput .= "rankdir=$this->m_rankdir;"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 137 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 138 |  |  | 		while ( $row = $res->getNext() ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 139 |  |  | 			$graphInput .= $this->getGVForItem( $row, $outputmode ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 140 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 141 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 142 |  |  | 		$graphInput .= "}"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 143 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 144 |  |  | 		// Calls graphvizParserHook function from MediaWiki GraphViz extension | 
            
                                                                                                            
                            
            
                                    
            
            
                | 145 |  |  | 		$result = $GLOBALS['wgParser']->recursiveTagParse( "<graphviz>$graphInput</graphviz>" ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 146 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 147 |  |  | 		if ( $this->m_graphLegend && $this->m_graphColor ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 148 |  |  | 			$arrayCount = 0; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 149 |  |  | 			$arraySize = count( $this->m_graphColors ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 150 |  |  | 			$result .= "<P>"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 151 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 152 |  |  | 			foreach ( $this->m_labelArray as $m_label ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 153 |  |  | 				if ( $arrayCount >= $arraySize ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 154 |  |  | 					$arrayCount = 0; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 155 |  |  | 				} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 156 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 157 |  |  | 				$color = $this->m_graphColors[$arrayCount]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 158 |  |  | 				$result .= "<font color=$color>$color: $m_label </font><br />"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 159 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 160 |  |  | 				$arrayCount += 1; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 161 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 162 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 163 |  |  | 			$result .= "</P>"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 164 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 165 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 166 |  |  | 		return $result; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 167 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 168 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 169 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 170 |  |  | 	 * Returns the GV for a single subject. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 171 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 172 |  |  | 	 * @since 1.5.4 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 173 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 174 |  |  | 	 * @param array $row | 
            
                                                                                                            
                            
            
                                    
            
            
                | 175 |  |  | 	 * @param $outputmode | 
            
                                                                                                            
                            
            
                                    
            
            
                | 176 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 177 |  |  | 	 * @return string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 178 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 179 |  |  | 	protected function getGVForItem( array /* of SMWResultArray */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 180 |  |  | 	$row, $outputmode ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 181 |  |  | 		$segments = []; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 182 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 183 |  |  | 		// Loop throught all fields of the record. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 184 |  |  | 		foreach ( $row as $i => $resultArray ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 185 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 186 |  |  | 			// Loop throught all the parts of the field value. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 187 |  |  | 			while ( ( $object = $resultArray->getNextDataValue() ) !== false ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 188 |  |  | 				$propName = $resultArray->getPrintRequest()->getLabel(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 189 |  |  | 				$isName = $this->m_nameProperty ? ( $i != 0 && $this->m_nameProperty === $propName ) : $i == 0; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 190 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 191 |  |  | 				if ( $isName ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 192 |  |  | 					$name = $this->getWordWrappedText( $object->getShortText( $outputmode ), $this->m_wordWrapLimit ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 193 |  |  | 				} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 194 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 195 |  |  | 				if ( !( $this->m_nameProperty && $i == 0 ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 196 |  |  | 					$segments[] = $this->getGVForDataValue( $object, $outputmode, $isName, $name, $propName ); | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 197 |  |  | 				} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 198 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 199 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 200 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 201 |  |  | 		return implode( "\n", $segments ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 202 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 203 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 204 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 205 |  |  | 	 * Returns the GV for a single SMWDataValue. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 206 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 207 |  |  | 	 * @since 1.5.4 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 208 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 209 |  |  | 	 * @param SMWDataValue $object | 
            
                                                                                                            
                            
            
                                    
            
            
                | 210 |  |  | 	 * @param $outputmode | 
            
                                                                                                            
                            
            
                                    
            
            
                | 211 |  |  | 	 * @param boolean $isName Is this the name that should be used for the node? | 
            
                                                                                                            
                            
            
                                    
            
            
                | 212 |  |  | 	 * @param string $name | 
            
                                                                                                            
                            
            
                                    
            
            
                | 213 |  |  | 	 * @param string $labelName | 
            
                                                                                                            
                            
            
                                    
            
            
                | 214 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 215 |  |  | 	 * @return string | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 216 |  |  | 	 */ | 
            
                                                                        
                            
            
                                    
            
            
                | 217 |  |  | 	protected function getGVForDataValue( SMWDataValue $object, $outputmode, $isName, $name, $labelName ) { | 
            
                                                                        
                            
            
                                    
            
            
                | 218 |  |  | 		$graphInput = ''; | 
            
                                                                        
                            
            
                                    
            
            
                | 219 |  |  | 		$nodeLabel = ''; | 
            
                                                                        
                            
            
                                    
            
            
                | 220 |  |  | 		$text = $object->getShortText( $outputmode ); | 
            
                                                                        
                            
            
                                    
            
            
                | 221 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 222 |  |  | 		if ( $this->m_graphLink ) { | 
            
                                                                        
                            
            
                                    
            
            
                | 223 |  |  | 			$nodeLinkURL = "[[" . $text . "]]"; | 
            
                                                                        
                            
            
                                    
            
            
                | 224 |  |  | 		} | 
            
                                                                        
                            
            
                                    
            
            
                | 225 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 226 |  |  | 		$text = $this->getWordWrappedText( $text, $this->m_wordWrapLimit ); | 
            
                                                                        
                            
            
                                    
            
            
                | 227 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 228 |  |  | 		if ( $this->m_nodeLabel === self::NODELABEL_DISPLAYTITLE && $object instanceof SMWWikiPageValue ) { | 
            
                                                                        
                            
            
                                    
            
            
                | 229 |  |  | 			$objectDisplayTitle = $object->getDisplayTitle(); | 
            
                                                                        
                            
            
                                    
            
            
                | 230 |  |  | 			if ( !empty( $objectDisplayTitle )) { | 
            
                                                                        
                            
            
                                    
            
            
                | 231 |  |  | 				$nodeLabel = $this->getWordWrappedText( $objectDisplayTitle, $this->m_wordWrapLimit ); | 
            
                                                                        
                            
            
                                    
            
            
                | 232 |  |  | 			} | 
            
                                                                        
                            
            
                                    
            
            
                | 233 |  |  | 		} | 
            
                                                                        
                            
            
                                    
            
            
                | 234 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 235 |  |  | 		if ( $this->m_graphLink ) { | 
            
                                                                        
                            
            
                                    
            
            
                | 236 |  |  | 			if( $nodeLabel === '' ) { | 
            
                                                                        
                            
            
                                    
            
            
                | 237 |  |  | 				$graphInput .= " \"$text\" [URL = \"$nodeLinkURL\"]; "; | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                        
                            
            
                                    
            
            
                | 238 |  |  | 			} else { | 
            
                                                                        
                            
            
                                    
            
            
                | 239 |  |  | 				$graphInput .= " \"$text\" [URL = \"$nodeLinkURL\", label = \"$nodeLabel\"]; "; | 
            
                                                                        
                            
            
                                    
            
            
                | 240 |  |  | 			} | 
            
                                                                        
                            
            
                                    
            
            
                | 241 |  |  | 		} | 
            
                                                                        
                            
            
                                    
            
            
                | 242 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 243 |  |  | 		if ( !$isName ) { | 
            
                                                                        
                            
            
                                    
            
            
                | 244 |  |  | 			$graphInput .= $this->m_parentRelation ? " \"$text\" -> \"$name\" " : " \"$name\" -> \"$text\" "; | 
            
                                                                        
                            
            
                                    
            
            
                | 245 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 246 |  |  | 			if ( $this->m_graphLabel || $this->m_graphColor ) { | 
            
                                                                        
                            
            
                                    
            
            
                | 247 |  |  | 				$graphInput .= ' ['; | 
            
                                                                        
                            
            
                                    
            
            
                | 248 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 249 |  |  | 				if ( array_search( $labelName, $this->m_labelArray, true ) === false ) { | 
            
                                                                        
                            
            
                                    
            
            
                | 250 |  |  | 					$this->m_labelArray[] = $labelName; | 
            
                                                                        
                            
            
                                    
            
            
                | 251 |  |  | 				} | 
            
                                                                        
                            
            
                                    
            
            
                | 252 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 253 |  |  | 				$color = $this->m_graphColors[array_search( $labelName, $this->m_labelArray, true )]; | 
            
                                                                        
                            
            
                                    
            
            
                | 254 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 255 |  |  | 				if ( $this->m_graphLabel ) { | 
            
                                                                        
                            
            
                                    
            
            
                | 256 |  |  | 					$graphInput .= "label=\"$labelName\""; | 
            
                                                                        
                            
            
                                    
            
            
                | 257 |  |  | 					if ( $this->m_graphColor ) { | 
            
                                                                        
                            
            
                                    
            
            
                | 258 |  |  | 						$graphInput .= ",fontcolor=$color,"; | 
            
                                                                        
                            
            
                                    
            
            
                | 259 |  |  | 					} | 
            
                                                                        
                            
            
                                    
            
            
                | 260 |  |  | 				} | 
            
                                                                        
                            
            
                                    
            
            
                | 261 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 262 |  |  | 				if ( $this->m_graphColor ) { | 
            
                                                                        
                            
            
                                    
            
            
                | 263 |  |  | 					$graphInput .= "color=$color"; | 
            
                                                                        
                            
            
                                    
            
            
                | 264 |  |  | 				} | 
            
                                                                        
                            
            
                                    
            
            
                | 265 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 266 |  |  | 				$graphInput .= ']'; | 
            
                                                                        
                            
            
                                    
            
            
                | 267 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 268 |  |  | 			} | 
            
                                                                        
                            
            
                                    
            
            
                | 269 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 270 |  |  | 			$graphInput .= ';'; | 
            
                                                                        
                            
            
                                    
            
            
                | 271 |  |  | 		} | 
            
                                                                        
                            
            
                                    
            
            
                | 272 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 273 |  |  | 		return $graphInput; | 
            
                                                                        
                            
            
                                    
            
            
                | 274 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 275 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 276 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 277 |  |  | 	 * Returns the word wrapped version of the provided text. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 278 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 279 |  |  | 	 * @since 1.5.4 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 280 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 281 |  |  | 	 * @param string $text | 
            
                                                                                                            
                            
            
                                    
            
            
                | 282 |  |  | 	 * @param integer $charLimit | 
            
                                                                                                            
                            
            
                                    
            
            
                | 283 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 284 |  |  | 	 * @return string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 285 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 286 |  |  | 	protected function getWordWrappedText( $text, $charLimit ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 287 |  |  | 		$charLimit = max( [ $charLimit, 1 ] ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 288 |  |  | 		$segments = []; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 289 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 290 |  |  | 		while ( strlen( $text ) > $charLimit ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 291 |  |  | 			// Find the last space in the allowed range. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 292 |  |  | 			$splitPosition = strrpos( substr( $text, 0, $charLimit ), ' ' ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 293 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 294 |  |  | 			if ( $splitPosition === false ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 295 |  |  | 				// If there is no space (lond word), find the next space. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 296 |  |  | 				$splitPosition = strpos( $text, ' ' ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 297 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 298 |  |  | 				if ( $splitPosition === false ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 299 |  |  | 					// If there are no spaces, everything goes on one line. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 300 |  |  | 					$splitPosition = strlen( $text ) - 1; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 301 |  |  | 				} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 302 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 303 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 304 |  |  | 			$segments[] = substr( $text, 0, $splitPosition + 1 ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 305 |  |  | 			$text = substr( $text, $splitPosition + 1 ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 306 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 307 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 308 |  |  | 		$segments[] = $text; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 309 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 310 |  |  | 		return implode( '\n', $segments ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 311 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 312 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 313 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 314 |  |  | 	 * (non-PHPdoc) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 315 |  |  | 	 * @see SMWResultPrinter::getName() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 316 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 317 |  |  | 	public function getName() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 318 |  |  | 		return wfMessage( 'srf-printername-graph' )->text(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 319 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 320 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 321 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 322 |  |  | 	 * @see SMWResultPrinter::getParamDefinitions | 
            
                                                                                                            
                            
            
                                    
            
            
                | 323 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 324 |  |  | 	 * @since 1.8 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 325 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 326 |  |  | 	 * @param $definitions array of IParamDefinition | 
            
                                                                                                            
                            
            
                                    
            
            
                | 327 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 328 |  |  | 	 * @return array of IParamDefinition|array | 
            
                                                                                                            
                            
            
                                    
            
            
                | 329 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 330 |  |  | 	public function getParamDefinitions( array $definitions ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 331 |  |  | 		$params = parent::getParamDefinitions( $definitions ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 332 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 333 |  |  | 		$params['graphname'] = [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 334 |  |  | 			'default' => 'QueryResult', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 335 |  |  | 			'message' => 'srf-paramdesc-graphname', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 336 |  |  | 		]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 337 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 338 |  |  | 		$params['graphsize'] = [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 339 |  |  | 			'type' => 'string', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 340 |  |  | 			'default' => '', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 341 |  |  | 			'message' => 'srf-paramdesc-graphsize', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 342 |  |  | 			'manipulatedefault' => false, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 343 |  |  | 		]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 344 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 345 |  |  | 		$params['graphlegend'] = [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 346 |  |  | 			'type' => 'boolean', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 347 |  |  | 			'default' => false, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 348 |  |  | 			'message' => 'srf-paramdesc-graphlegend', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 349 |  |  | 		]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 350 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 351 |  |  | 		$params['graphlabel'] = [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 352 |  |  | 			'type' => 'boolean', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 353 |  |  | 			'default' => false, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 354 |  |  | 			'message' => 'srf-paramdesc-graphlabel', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 355 |  |  | 		]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 356 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 357 |  |  | 		$params['graphlink'] = [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 358 |  |  | 			'type' => 'boolean', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 359 |  |  | 			'default' => false, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 360 |  |  | 			'message' => 'srf-paramdesc-graphlink', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 361 |  |  | 		]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 362 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 363 |  |  | 		$params['graphcolor'] = [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 364 |  |  | 			'type' => 'boolean', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 365 |  |  | 			'default' => false, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 366 |  |  | 			'message' => 'srf-paramdesc-graphcolor', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 367 |  |  | 		]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 368 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 369 |  |  | 		$params['arrowdirection'] = [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 370 |  |  | 			'aliases' => 'rankdir', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 371 |  |  | 			'default' => 'LR', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 372 |  |  | 			'message' => 'srf-paramdesc-rankdir', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 373 |  |  | 			'values' => [ 'LR', 'RL', 'TB', 'BT' ], | 
            
                                                                                                            
                            
            
                                    
            
            
                | 374 |  |  | 		]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 375 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 376 |  |  | 		$params['nodeshape'] = [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 377 |  |  | 			'default' => false, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 378 |  |  | 			'message' => 'srf-paramdesc-graph-nodeshape', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 379 |  |  | 			'manipulatedefault' => false, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 380 |  |  | 			'values' => self::$NODE_SHAPES, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 381 |  |  | 		]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 382 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 383 |  |  | 		$params['relation'] = [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 384 |  |  | 			'default' => 'child', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 385 |  |  | 			'message' => 'srf-paramdesc-graph-relation', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 386 |  |  | 			'manipulatedefault' => false, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 387 |  |  | 			'values' => [ 'parent', 'child' ], | 
            
                                                                                                            
                            
            
                                    
            
            
                | 388 |  |  | 		]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 389 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 390 |  |  | 		$params['nameproperty'] = [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 391 |  |  | 			'default' => false, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 392 |  |  | 			'message' => 'srf-paramdesc-graph-nameprop', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 393 |  |  | 			'manipulatedefault' => false, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 394 |  |  | 		]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 395 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 396 |  |  | 		$params['wordwraplimit'] = [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 397 |  |  | 			'type' => 'integer', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 398 |  |  | 			'default' => 25, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 399 |  |  | 			'message' => 'srf-paramdesc-graph-wwl', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 400 |  |  | 			'manipulatedefault' => false, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 401 |  |  | 		]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 402 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 403 |  |  | 		$params['nodelabel'] = [ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 404 |  |  | 			'default' => [], | 
            
                                                                                                            
                            
            
                                    
            
            
                | 405 |  |  | 			'message' => 'srf-paramdesc-nodelabel', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 406 |  |  | 			'values' => self::$NODE_LABELS, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 407 |  |  | 		]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 408 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 409 |  |  | 		return $params; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 410 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 411 |  |  |  | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 412 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 413 |  |  |  | 
            
                        
If you define a variable conditionally, it can happen that it is not defined for all execution paths.
Let’s take a look at an example:
In the above example, the variable $x is defined if you pass “foo” or “bar” as argument for $a. However, since the switch statement has no default case statement, if you pass any other value, the variable $x would be undefined.
Available Fixes
Check for existence of the variable explicitly:
Define a default value for the variable:
Add a value for the missing path: