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<?php
namespace Laravel\Prompts\Concerns;
use Closure;
trait Fallback
{
/**
* Whether to fallback to a custom implementation
*/
protected static bool $shouldFallback = false;
/**
* The fallback implementations.
*
* @var array<class-string, Closure($this): mixed>
*/
protected static array $fallbacks = [];
/**
* Enable the fallback implementation.
*/
public static function fallbackWhen(bool $condition): void
{
static::$shouldFallback = $condition || static::$shouldFallback;
}
/**
* Whether the prompt should fallback to a custom implementation.
*/
public static function shouldFallback(): bool
{
return static::$shouldFallback && isset(static::$fallbacks[static::class]);
}
/**
* Set the fallback implementation.
*
* @param Closure($this): mixed $fallback
*/
public static function fallbackUsing(Closure $fallback): void
{
static::$fallbacks[static::class] = $fallback;
}
/**
* Call the registered fallback implementation.
*/
public function fallback(): mixed
{
$fallback = static::$fallbacks[static::class];
return $fallback($this);
}
}