<?php

namespace PhpOffice\PhpSpreadsheet\Worksheet;

use PhpOffice\PhpSpreadsheet\Spreadsheet;

/**
 * @implements \Iterator<int, Worksheet>
 */
class Iterator implements \Iterator
{
    /**
     * Spreadsheet to iterate.
     *
     * @var Spreadsheet
     */
    private $subject;

    /**
     * Current iterator position.
     *
     * @var int
     */
    private $position = 0;

    /**
     * Create a new worksheet iterator.
     */
    public function __construct(Spreadsheet $subject)
    {
        // Set subject
        $this->subject = $subject;
    }

    /**
     * Rewind iterator.
     */
    public function rewind(): void
    {
        $this->position = 0;
    }

    /**
     * Current Worksheet.
     */
    public function current(): Worksheet
    {
        return $this->subject->getSheet($this->position);
    }

    /**
     * Current key.
     */
    public function key(): int
    {
        return $this->position;
    }

    /**
     * Next value.
     */
    public function next(): void
    {
        ++$this->position;
    }

    /**
     * Are there more Worksheet instances available?
     */
    public function valid(): bool
    {
        return $this->position < $this->subject->getSheetCount() && $this->position >= 0;
    }
}

• [D] AutoFilter
• [D] Drawing
• [D] Table
• [F] AutoFilter.php
  Delete
• [F] AutoFit.php
  Delete
• [F] BaseDrawing.php
  Delete
• [F] CellIterator.php
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• [F] Column.php
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• [F] ColumnCellIterator.php
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• [F] ColumnDimension.php
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• [F] ColumnIterator.php
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• [F] Dimension.php
  Delete
• [F] Drawing.php
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• [F] HeaderFooter.php
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• [F] HeaderFooterDrawing.php
  Delete
• [F] Iterator.php
  Delete
• [F] MemoryDrawing.php
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• [F] PageBreak.php
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• [F] PageMargins.php
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• [F] PageSetup.php
  Delete
• [F] Protection.php
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• [F] Row.php
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• [F] RowCellIterator.php
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• [F] RowDimension.php
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• [F] RowIterator.php
  Delete
• [F] SheetView.php
  Delete
• [F] Table.php
  Delete
• [F] Validations.php
  Delete
• [F] Worksheet.php
  Delete

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