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<?php
namespace SebLucas\EPubMeta\Contents;
use ArrayIterator;
/**
* A list of EPUB TOC navigation points.
*
* @author Simon Schrape <simon@epubli.com>
* @author mikespub
* @extends ArrayIterator<int, NavPoint>
*/
class NavPointList extends ArrayIterator
{
public function __construct() {}
/**
* @return NavPoint
*/
public function first()
{
$this->rewind();
return $this->current();
}
/**
* @return NavPoint
*/
public function last()
{
$this->seek($this->count() - 1);
return $this->current();
}
/**
* @param NavPoint $navPoint
* @return void
* @deprecated 2.1.0 use normal append() instead
*/
public function addNavPoint(NavPoint $navPoint)
{
$this->append($navPoint);
}
/**
* @param string $file
*
* @return array|NavPoint[]
*/
public function findNavPointsForFile($file)
{
$matches = [];
foreach ($this as $navPoint) {
if ($navPoint->getContentSourceFile() == $file) {
$matches[] = $navPoint;
}
$childMatches = $navPoint->getChildren()->findNavPointsForFile($file);
if (count($childMatches)) {
$matches = array_merge($matches, $childMatches);
}
}
return $matches;
}
}
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