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Direktori : /home2/selectio/public_html/bharath/a1tex.in/vendor/dompdf/dompdf/src/Frame/ |
Current File : /home2/selectio/public_html/bharath/a1tex.in/vendor/dompdf/dompdf/src/Frame/FrameListIterator.php |
<?php /** * @package dompdf * @link https://github.com/dompdf/dompdf * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License */ namespace Dompdf\Frame; use Iterator; use Dompdf\Frame; /** * Linked-list Iterator * * Returns children in order and allows for the list to change during iteration, * provided the changes occur to or after the current element. * * @package dompdf */ class FrameListIterator implements Iterator { /** * @var Frame */ protected $parent; /** * @var Frame|null */ protected $cur; /** * @var Frame|null */ protected $prev; /** * @var int */ protected $num; /** * @param Frame $frame */ public function __construct(Frame $frame) { $this->parent = $frame; $this->rewind(); } public function rewind(): void { $this->cur = $this->parent->get_first_child(); $this->prev = null; $this->num = 0; } /** * @return bool */ public function valid(): bool { return $this->cur !== null; } /** * @return int */ public function key(): int { return $this->num; } /** * @return Frame|null */ public function current(): ?Frame { return $this->cur; } public function next(): void { if ($this->cur === null) { return; } if ($this->cur->get_parent() === $this->parent) { $this->prev = $this->cur; $this->cur = $this->cur->get_next_sibling(); $this->num++; } else { // Continue from the previous child if the current frame has been // moved to another parent $this->cur = $this->prev !== null ? $this->prev->get_next_sibling() : $this->parent->get_first_child(); } } }