====== HandlerRegistry ======

**Layer:** ''Handler'' · **Source:** ''lib/handler/HandlerRegistry.php:15'' (lines 15–57)

----
<code>
class HandlerRegistry
</code>

Registry for front-end request handlers.

Maps route keys (e.g. 'home', 'post', 'page') to their corresponding
FrontRequestHandler implementations. Used by the dispatcher to look up
the correct handler for each incoming request.

======= Inheritance =======

//No parent, interface or trait. This is a root type.//

======= Constants (0) =======

//None.//

======= Properties (1) =======

^ Visibility ^ Type ^ Name ^ Default ^ Line ^
| ''private'' | ''array'' | ''$handlers'' | ''[]'' | 22 |

======= Methods (3) =======

^ Visibility ^ Method ^ Summary ^ Line ^
| public | ''register()'' | Register a handler for a given route key. | 31 |
| public | ''get()'' | Retrieve a handler by route key. | 42 |
| public | ''has()'' | Check whether a handler is registered for the given route key. | 53 |


======== register() ========

<code>
public function register(string $key, FrontRequestHandler $handler): void
</code>

//lines 31–34 (4)//

Register a handler for a given route key.

^  Parameter ^  Type ^  Default ^  Description ^
|  ''$key'' |  ''string'' |  //required// |  The route identifier (e.g. 'home', 'post'). |
|  ''$handler'' |  [[scriptlog:lib:handler:frontrequesthandler|''FrontRequestHandler'']] |  //required// |  The handler instance. |

**Returns:** ''void'' — void


======== get() ========

<code>
public function get(string $key): ?FrontRequestHandler
</code>

//lines 42–45 (4)//

Retrieve a handler by route key.

^  Parameter ^  Type ^  Default ^  Description ^
|  ''$key'' |  ''string'' |  //required// |  The route identifier. |

**Returns:** [[scriptlog:lib:handler:frontrequesthandler|''?FrontRequestHandler'']] — FrontRequestHandler&#124;null The handler instance, or null if not registered.


======== has() ========

<code>
public function has(string $key): bool
</code>

//lines 53–56 (4)//

Check whether a handler is registered for the given route key.

^  Parameter ^  Type ^  Default ^  Description ^
|  ''$key'' |  ''string'' |  //required// |  The route identifier. |

**Returns:** ''bool'' — bool True if a handler is registered for the key.


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