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| <?php | |
| /** | |
| * Class to print query results in a "tree" display, using a field that | |
| * defines a "parent" relationship between rows. | |
| * | |
| * @author Yaron Koren | |
| * @ingroup Cargo | |
| */ | |
| class CargoTreeFormatTree { | |
| private $mNodes = []; | |
| public function getNodes() { | |
| return $this->mNodes; | |
| } | |
| public function getNode( $nodeName ) { | |
| return $this->mNodes[$nodeName]; | |
| } | |
| /** | |
| * @param string $nodeName | |
| * @param string $parentName | |
| * @param array $nodeValues | |
| * @throws MWException | |
| */ | |
| public function addNode( $nodeName, $parentName, $nodeValues ) { | |
| // Add node for child, if it's not already there. | |
| if ( array_key_exists( $nodeName, $this->mNodes ) ) { | |
| // Make sure it doesn't have more than one parent. | |
| $existingParent = $this->mNodes[$nodeName]->getParent(); | |
| if ( $existingParent != null && $existingParent != $parentName ) { | |
| throw new MWException( "The value \"$nodeName\" cannot have more than one parent " | |
| . "defined for it" ); | |
| } | |
| } else { | |
| $this->mNodes[$nodeName] = new CargoTreeFormatNode(); | |
| } | |
| $this->mNodes[$nodeName]->setParent( $parentName ); | |
| $this->mNodes[$nodeName]->setValues( $nodeValues ); | |
| // Add node for parent, if it's not already there | |
| if ( !array_key_exists( $parentName, $this->mNodes ) ) { | |
| $this->mNodes[$parentName] = new CargoTreeFormatNode(); | |
| } | |
| $this->mNodes[$parentName]->addChild( $nodeName ); | |
| } | |
| } |