<?php

namespace PhpOffice\PhpSpreadsheet\Worksheet;

use Iterator as NativeIterator;
use PhpOffice\PhpSpreadsheet\Cell\Coordinate;
use PhpOffice\PhpSpreadsheet\Exception;
use PhpOffice\PhpSpreadsheet\Exception as PhpSpreadsheetException;

/**
 * @implements NativeIterator<string, Column>
 */
class ColumnIterator implements NativeIterator
{
    /**
     * Worksheet to iterate.
     *
     * @var Worksheet
     */
    private $worksheet;

    /**
     * Current iterator position.
     *
     * @var int
     */
    private $currentColumnIndex = 1;

    /**
     * Start position.
     *
     * @var int
     */
    private $startColumnIndex = 1;

    /**
     * End position.
     *
     * @var int
     */
    private $endColumnIndex = 1;

    /**
     * Create a new column iterator.
     *
     * @param Worksheet $worksheet The worksheet to iterate over
     * @param string $startColumn The column address at which to start iterating
     * @param string $endColumn Optionally, the column address at which to stop iterating
     */
    public function __construct(Worksheet $worksheet, $startColumn = 'A', $endColumn = null)
    {
        // Set subject
        $this->worksheet = $worksheet;
        $this->resetEnd($endColumn);
        $this->resetStart($startColumn);
    }

    /**
     * Destructor.
     */
    public function __destruct()
    {
        // @phpstan-ignore-next-line
        $this->worksheet = null;
    }

    /**
     * (Re)Set the start column and the current column pointer.
     *
     * @param string $startColumn The column address at which to start iterating
     *
     * @return $this
     */
    public function resetStart(string $startColumn = 'A')
    {
        $startColumnIndex = Coordinate::columnIndexFromString($startColumn);
        if ($startColumnIndex > Coordinate::columnIndexFromString($this->worksheet->getHighestColumn())) {
            throw new Exception(
                "Start column ({$startColumn}) is beyond highest column ({$this->worksheet->getHighestColumn()})"
            );
        }

        $this->startColumnIndex = $startColumnIndex;
        if ($this->endColumnIndex < $this->startColumnIndex) {
            $this->endColumnIndex = $this->startColumnIndex;
        }
        $this->seek($startColumn);

        return $this;
    }

    /**
     * (Re)Set the end column.
     *
     * @param string $endColumn The column address at which to stop iterating
     *
     * @return $this
     */
    public function resetEnd($endColumn = null)
    {
        $endColumn = $endColumn ?: $this->worksheet->getHighestColumn();
        $this->endColumnIndex = Coordinate::columnIndexFromString($endColumn);

        return $this;
    }

    /**
     * Set the column pointer to the selected column.
     *
     * @param string $column The column address to set the current pointer at
     *
     * @return $this
     */
    public function seek(string $column = 'A')
    {
        $column = Coordinate::columnIndexFromString($column);
        if (($column < $this->startColumnIndex) || ($column > $this->endColumnIndex)) {
            throw new PhpSpreadsheetException(
                "Column $column is out of range ({$this->startColumnIndex} - {$this->endColumnIndex})"
            );
        }
        $this->currentColumnIndex = $column;

        return $this;
    }

    /**
     * Rewind the iterator to the starting column.
     */
    public function rewind(): void
    {
        $this->currentColumnIndex = $this->startColumnIndex;
    }

    /**
     * Return the current column in this worksheet.
     */
    public function current(): Column
    {
        return new Column($this->worksheet, Coordinate::stringFromColumnIndex($this->currentColumnIndex));
    }

    /**
     * Return the current iterator key.
     */
    public function key(): string
    {
        return Coordinate::stringFromColumnIndex($this->currentColumnIndex);
    }

    /**
     * Set the iterator to its next value.
     */
    public function next(): void
    {
        ++$this->currentColumnIndex;
    }

    /**
     * Set the iterator to its previous value.
     */
    public function prev(): void
    {
        --$this->currentColumnIndex;
    }

    /**
     * Indicate if more columns exist in the worksheet range of columns that we're iterating.
     */
    public function valid(): bool
    {
        return $this->currentColumnIndex <= $this->endColumnIndex && $this->currentColumnIndex >= $this->startColumnIndex;
    }
}

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

About Section

About NFC Pay: Our Story and Mission

NFC Pay was founded with a vision to transform the way people handle transactions. Our journey is defined by a commitment to innovation, security, and convenience. We strive to deliver seamless, user-friendly payment solutions that make everyday transactions effortless and secure. Our mission is to empower you to pay with ease and confidence, anytime, anywhere.

• Simplifying Payments, One Tap at a Time.
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FAQ Section

Frequently Asked Questions About NFC Pay

Here are answers to some common questions about NFC Pay. We aim to provide clear and concise information to help you understand how our platform works and how it can benefit you. If you have any further inquiries, please don’t hesitate to contact our support team.

How do I register for NFC Pay?

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Is my payment information secure?

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Can I add multiple cards to my NFC Pay wallet?

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Can I track my payment status?

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