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<?php |
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namespace StefanoTree\NestedSet\MoveStrategy; |
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use StefanoTree\NestedSet\NodeInfo; |
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abstract class MoveStrategyAbstract |
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implements MoveStrategyInterface |
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{ |
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protected $sourceNode; |
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protected $targetNode; |
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/** |
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* @param NodeInfo $sourceNode |
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* @param NodeInfo $targetNode |
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*/ |
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public function __construct(NodeInfo $sourceNode, NodeInfo $targetNode) |
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{ |
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$this->sourceNode = $sourceNode; |
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$this->targetNode = $targetNode; |
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} |
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/** |
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* @return NodeInfo |
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*/ |
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protected function getSourceNode() |
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{ |
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return $this->sourceNode; |
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} |
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/** |
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* @return NodeInfo |
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*/ |
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protected function getTargetNode() |
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{ |
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return $this->targetNode; |
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} |
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/** |
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* @return boolean |
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*/ |
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protected function isMovedUp() |
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{ |
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return ($this->getTargetNode()->getRight() < $this->getSourceNode()->getLeft()) ? |
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true : false; |
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} |
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/** |
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* @return boolean |
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*/ |
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protected function isMovedDown() |
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{ |
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return ($this->getSourceNode()->getRight() < $this->getTargetNode()->getLeft()) ? |
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true : false; |
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} |
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/** |
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* @return boolean |
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*/ |
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protected function isMovedToRoot() |
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{ |
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return ($this->getSourceNode()->getLeft() > $this->getTargetNode()->getLeft() && |
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$this->getSourceNode()->getRight() < $this->getTargetNode()->getRight()) ? |
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true : false; |
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} |
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public function getIndexShift() |
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{ |
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return $this->getSourceNode()->getRight() - $this->getSourceNode()->getLeft() + 1; |
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} |
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public function canMoveBranch() |
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{ |
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return ($this->isTargetNodeInsideSourceBranch()) ? |
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false : true; |
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} |
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protected function isTargetNodeInsideSourceBranch() |
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{ |
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$targetNode = $this->getTargetNode(); |
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$sourceNode = $this->getSourceNode(); |
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return ($targetNode->getLeft() > $sourceNode->getLeft() && |
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$targetNode->getRight() < $sourceNode->getRight()) ? |
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true : false; |
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} |
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} |
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bartko-s /
stefano-tree
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