Файл: vendor/laravel/prompts/src/Themes/Default/Concerns/DrawsScrollbars.php
Строк: 75
<?php
namespace LaravelPromptsThemesDefaultConcerns;
use IlluminateSupportCollection;
trait DrawsScrollbars
{
/**
* Render a scrollbar beside the visible items.
*
* @template T of array<int, string>|IlluminateSupportCollection<int, string>
*
* @param T $visible
* @return T
*/
protected function scrollbar(array|Collection $visible, int $firstVisible, int $height, int $total, int $width, string $color = 'cyan'): array|Collection
{
if ($height >= $total) {
return $visible;
}
$scrollPosition = $this->scrollPosition($firstVisible, $height, $total);
$lines = $visible instanceof Collection ? $visible->all() : $visible;
$result = array_map(fn ($line, $index) => match ($index) {
$scrollPosition => preg_replace('/.$/', $this->{$color}('┃'), $this->pad($line, $width)) ?? '',
default => preg_replace('/.$/', $this->gray('│'), $this->pad($line, $width)) ?? '',
}, array_values($lines), range(0, count($lines) - 1));
return $visible instanceof Collection ? new Collection($result) : $result; // @phpstan-ignore return.type (https://github.com/phpstan/phpstan/issues/11663)
}
/**
* Return the position where the scrollbar "handle" should be rendered.
*/
protected function scrollPosition(int $firstVisible, int $height, int $total): int
{
if ($firstVisible === 0) {
return 0;
}
$maxPosition = $total - $height;
if ($firstVisible === $maxPosition) {
return $height - 1;
}
if ($height <= 2) {
return -1;
}
$percent = $firstVisible / $maxPosition;
return (int) round($percent * ($height - 3)) + 1;
}
}