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Direktori : /proc/self/root/home2/selectio/www/ramali.in/pdf/src/Frame/ |
Current File : //proc/self/root/home2/selectio/www/ramali.in/pdf/src/Frame/FrameTreeIterator.php |
<?php namespace Dompdf\Frame; use Iterator; use Dompdf\Frame; /** * Pre-order Iterator * * Returns frames in preorder traversal order (parent then children) * * @access private * @package dompdf */ class FrameTreeIterator implements Iterator { /** * @var Frame */ protected $_root; /** * @var array */ protected $_stack = []; /** * @var int */ protected $_num; /** * @param Frame $root */ public function __construct(Frame $root) { $this->_stack[] = $this->_root = $root; $this->_num = 0; } /** * */ public function rewind() { $this->_stack = [$this->_root]; $this->_num = 0; } /** * @return bool */ public function valid() { return count($this->_stack) > 0; } /** * @return int */ public function key() { return $this->_num; } /** * @return Frame */ public function current() { return end($this->_stack); } /** * @return Frame */ public function next() { $b = end($this->_stack); // Pop last element unset($this->_stack[key($this->_stack)]); $this->_num++; // Push all children onto the stack in reverse order if ($c = $b->get_last_child()) { $this->_stack[] = $c; while ($c = $c->get_prev_sibling()) { $this->_stack[] = $c; } } return $b; } }