Current File : //vendor/psy/psysh/src/Readline/Interactive/Input/ClosureKeyBindings.php
<?php
/*
* This file is part of Psy Shell.
*
* (c) 2012-2026 Justin Hileman
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Psy\Readline\Interactive\Input;
/**
* Closure-valued key binding map.
*
* Lighter sibling of KeyBindings. Instead of dispatching to ActionInterface
* (which assumes a Buffer + Readline context), each binding is a
* `callable(Key)`. Useful anywhere a small TUI surface needs its own input
* dispatch without the full Action machinery: Pager today, future
* interactive widgets later.
*
* The variadic bind() makes it easy to attach the same closure to several
* key patterns, which is the common case (j/Down/Ctrl-N all do the same
* thing).
*/
class ClosureKeyBindings
{
/** @var callable[] Keyed by key pattern */
private array $bindings = [];
/**
* Bind one or more key patterns to the same action.
*
* @param callable $action Action to invoke; receives the Key
* @param string ...$patterns One or more key patterns (e.g. 'char:j', 'escape:[B')
*/
public function bind(callable $action, string ...$patterns): void
{
foreach ($patterns as $pattern) {
$this->bindings[$pattern] = $action;
}
}
/**
* Get the action bound to a key, or null if none.
*/
public function get(Key $key): ?callable
{
return $this->bindings[(string) $key] ?? null;
}
}
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