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<?php |
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namespace Algorithms\GraphTools; |
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class ConnectionsContainer |
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{ |
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private $connections = array(); |
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public function __construct($connections = null) |
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{ |
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if (is_array($connections)) { |
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foreach ($connections as $connection) { |
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$this->add($connection); |
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} |
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} elseif(!is_null($connections)) { |
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throw new ConnectionException('ConnectionsContainer contructor only accept connections array'); |
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} |
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} |
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protected function getLastConnection() |
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{ |
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$lastPos = count($this->connections) - 1; |
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if ($lastPos == -1) { |
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return null; |
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} else { |
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return $this->connections[$lastPos]; |
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} |
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} |
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protected function addToLastConnection(Point $point, $distance) |
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{ |
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$lastConnection = $this->getLastConnection(); |
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if (is_null($lastConnection)) { |
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throw new ConnectionException('Can\'t add to last connection because last connection do not exists'); |
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} |
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return $this->add($this->createNewConnection($lastConnection->from, $point, $distance)); |
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} |
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protected function createNewConnection(Point $from, Point $to, $distance) |
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{ |
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return new Connection($from, $to, $distance); |
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} |
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public function addConnection(Point $first, $second, $third = null) |
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{ |
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if (!Point::check($second) && is_null($third)) { |
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return $this->addToLastConnection($first, $second); |
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} else { |
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return $this->add($this->createNewConnection($first, $second, $third)); |
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} |
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} |
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public function add(Connection $connection) |
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{ |
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$this->connections[] = $connection; |
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return $this; |
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} |
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public function each(\Closure $function) |
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{ |
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foreach ($this->connections as $connection) { |
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call_user_func($function, $connection); |
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} |
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} |
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public function get($from) |
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{ |
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$connections = array(); |
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$this->each(function ($connection) use (&$connections, $from) { |
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if ($connection->from |
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->id == $from) { |
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$connections[] = $connection; |
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} |
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}); |
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return $connections; |
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} |
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public function all() |
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{ |
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return $this->connections; |
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} |
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} |
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PHPAlgorithms /
GraphTools
