Inheritance diagram for MediaWiki\HookContainer\HookContainer:

Collaboration diagram for MediaWiki\HookContainer\HookContainer:

[legend]

Public Member Functions
	__construct (HookRegistry $hookRegistry, ObjectFactory $objectFactory)

	clear (string $hook)
	Clear hooks registered via Hooks::register(). More...

	emitDeprecationWarnings ()
	Will log a deprecation warning if: More...

	getHandlers (string $hook, array $options=[])
	Return array of handler objects registered with given hook in the new system. More...

	getLegacyHandlers (string $hook)
	Get all handlers for legacy hooks system, plus any handlers added using register(). More...

	isRegistered (string $hook)
	Return whether hook has any handlers registered to it. More...

	register (string $hook, $callback)
	Attach an event handler to a given hook. More...

	run (string $hook, array $args=[], array $options=[])
	Call registered hook functions through either the legacy $wgHooks or extension.json. More...

	salvage (SalvageableService $other)
	Salvage the state of HookContainer by retaining existing handler objects and hooks registered via HookContainer::register(). More...

	scopedRegister (string $hook, $callback, bool $replace=false)
	Register hook and handler, allowing for easy removal. More...

Private Member Functions
	callLegacyHook (string $hook, $handler, array $args, array $options)
	Run legacy hooks Hook can be: a function, an object, an array of $function and $data, an array of just a function, an array of object and method, or an array of object, method, and data (See hooks.txt for more details) More...

	normalizeHandler ( $handler, string $hook)
	Normalize/clean up format of argument passed as hook handler. More...

Private Attributes
array	$dynamicHandlers = []
	Hooks and their callbacks registered through $this->register() More...

array	$handlersByName = []
	handler name and their handler objects More...

int	$nextScopedRegisterId = 0
	The next ID to be used by scopedRegister() More...

ObjectFactory	$objectFactory

HookRegistry	$registry

array	$tombstones = []
	Tombstone count by hook name. More...

Detailed Description

HookContainer class.

Main class for managing hooks

Since: 1.35

Definition at line 45 of file HookContainer.php.

Constructor & Destructor Documentation

◆ __construct()

MediaWiki\HookContainer\HookContainer::__construct	(	HookRegistry	$hookRegistry,
		ObjectFactory	$objectFactory
	)

Parameters

HookRegistry	$hookRegistry
ObjectFactory	$objectFactory

Definition at line 75 of file HookContainer.php.

References MediaWiki\HookContainer\HookContainer\$objectFactory.

Member Function Documentation

◆ callLegacyHook()

MediaWiki\HookContainer\HookContainer::callLegacyHook	(	string	$hook,
			$handler,
		array	$args,
		array	$options
	)

private

Run legacy hooks Hook can be: a function, an object, an array of $function and $data, an array of just a function, an array of object and method, or an array of object, method, and data (See hooks.txt for more details)

Parameters

string	$hook
array \| callable	$handler	The name of the hooks handler function
array	$args	Arguments for hook handler function
array	$options

Returns: null|string|bool

Definition at line 319 of file HookContainer.php.

References $args, and wfDeprecated().

Referenced by MediaWiki\HookContainer\HookContainer\run().

◆ clear()

MediaWiki\HookContainer\HookContainer::clear ( string $hook )

Clear hooks registered via Hooks::register().

This is intended for use while testing and will fail if MW_PHPUNIT_TEST and MW_PARSER_TEST are not defined.

Parameters

string $hook Name of hook to clear

Access: internal: For use by Hooks.php

Exceptions

MWException If not in testing mode.

Definition at line 187 of file HookContainer.php.

◆ emitDeprecationWarnings()

MediaWiki\HookContainer\HookContainer::emitDeprecationWarnings ( )

Will log a deprecation warning if:

the hook is marked deprecated
the "silent" flag is absent or false, and
an extension registers a handler in the new way but does not acknowledge deprecation

Definition at line 479 of file HookContainer.php.

References MWDebug\sendRawDeprecated().

◆ getHandlers()

MediaWiki\HookContainer\HookContainer::getHandlers	(	string	$hook,
		array	$options = `[]`
	)

Return array of handler objects registered with given hook in the new system.

This does not include handlers registered dynamically using register(), nor does it include hooks registered via the old mechanism using $wgHooks.

Access: internal: For use by Hooks.php

Parameters

string	$hook	Name of the hook
array	$options	Handler options, which may include: noServices: Do not allow hook handlers with service dependencies

Returns: array non-deprecated handler objects

Definition at line 433 of file HookContainer.php.

Referenced by MediaWiki\HookContainer\HookContainer\run().

◆ getLegacyHandlers()

MediaWiki\HookContainer\HookContainer::getLegacyHandlers ( string $hook )

Get all handlers for legacy hooks system, plus any handlers added using register().

Access: internal: For use by Hooks.php

Parameters

string $hook Name of hook

Returns: callable[]

Definition at line 388 of file HookContainer.php.

References $keys.

Referenced by MediaWiki\HookContainer\HookContainer\isRegistered(), and MediaWiki\HookContainer\HookContainer\run().

◆ isRegistered()

MediaWiki\HookContainer\HookContainer::isRegistered ( string $hook )

Return whether hook has any handlers registered to it.

The function may have been registered via Hooks::register or in extension.json

Parameters

string $hook Name of hook

Returns: bool Whether the hook has a handler registered to it

Definition at line 340 of file HookContainer.php.

References MediaWiki\HookContainer\HookContainer\getLegacyHandlers().

◆ normalizeHandler()

MediaWiki\HookContainer\HookContainer::normalizeHandler	(		$handler,
		string	$hook
	)

private

Normalize/clean up format of argument passed as hook handler.

Parameters

array \| callable	$handler	Executable handler function
string	$hook	Hook name

Returns

array|false

handler: (callable) Executable handler function
functionName: (string) Handler name for passing to wfDeprecated() or Exceptions thrown
args: (array) handler function arguments

Definition at line 252 of file HookContainer.php.

Referenced by MediaWiki\HookContainer\HookContainer\run().

◆ register()

MediaWiki\HookContainer\HookContainer::register	(	string	$hook,
			$callback
	)

Attach an event handler to a given hook.

Parameters

string	$hook	Name of hook
callable \| string \| array	$callback	handler object to attach

Definition at line 364 of file HookContainer.php.

References wfDeprecated().

◆ run()

MediaWiki\HookContainer\HookContainer::run	(	string	$hook,
		array	$args = `[]`,
		array	$options = `[]`
	)

Call registered hook functions through either the legacy $wgHooks or extension.json.

For the given hook, fetch the array of handler objects and process them. Determine the proper callback for each hook and then call the actual hook using the appropriate arguments. Finally, process the return value and return/throw accordingly.

Parameters

string	$hook	Name of the hook
array	$args	Arguments to pass to hook handler
array	$options	options map: abortable: (bool) If false, handlers will not be allowed to abort the call sequenece. An exception will be raised if a handler returns anything other than true or null. deprecatedVersion: (string) Version of MediaWiki this hook was deprecated in. For supporting Hooks::run() legacy $deprecatedVersion parameter. New core code should add deprecated hooks to the DeprecatedHooks::$deprecatedHooks array literal. New extension code should use the DeprecatedHooks attribute. silent: (bool) If true, do not raise a deprecation warning noServices: (bool) If true, do not allow hook handlers with service dependencies

Returns: bool True if no handler aborted the hook

Exceptions

UnexpectedValueException if handlers return an invalid value

Definition at line 125 of file HookContainer.php.

References $args, MediaWiki\HookContainer\HookContainer\callLegacyHook(), MediaWiki\HookContainer\HookContainer\getHandlers(), MediaWiki\HookContainer\HookContainer\getLegacyHandlers(), MediaWiki\HookContainer\HookContainer\normalizeHandler(), and wfDeprecatedMsg().

◆ salvage()

MediaWiki\HookContainer\HookContainer::salvage ( SalvageableService $other )

Salvage the state of HookContainer by retaining existing handler objects and hooks registered via HookContainer::register().

Necessary in the event that MediaWikiServices::resetGlobalInstance() is called after hooks have already been registered.

Parameters

HookContainer | SalvageableService $other The object to salvage state from. $other be of type HookContainer

Exceptions

MWException

Definition at line 93 of file HookContainer.php.

◆ scopedRegister()

MediaWiki\HookContainer\HookContainer::scopedRegister	(	string	$hook,
			$callback,
		bool	$replace = `false`
	)

Register hook and handler, allowing for easy removal.

Intended for use in temporary registration e.g. testing

Parameters

string	$hook	Name of hook
callable \| string \| array	$callback	Handler object to attach
bool	$replace	(optional) By default adds callback to handler array. Set true to remove all existing callbacks for the hook.

Returns: ScopedCallback

Definition at line 212 of file HookContainer.php.

Member Data Documentation

◆ $dynamicHandlers

array MediaWiki\HookContainer\HookContainer::$dynamicHandlers = []

private

Hooks and their callbacks registered through $this->register()

Definition at line 49 of file HookContainer.php.

◆ $handlersByName

array MediaWiki\HookContainer\HookContainer::$handlersByName = []

private

handler name and their handler objects

Definition at line 60 of file HookContainer.php.

◆ $nextScopedRegisterId

int MediaWiki\HookContainer\HookContainer::$nextScopedRegisterId = 0

private

The next ID to be used by scopedRegister()

Definition at line 69 of file HookContainer.php.

◆ $objectFactory

ObjectFactory MediaWiki\HookContainer\HookContainer::$objectFactory

private

Definition at line 66 of file HookContainer.php.

Referenced by MediaWiki\HookContainer\HookContainer\__construct().

◆ $registry

HookRegistry MediaWiki\HookContainer\HookContainer::$registry

private

Definition at line 63 of file HookContainer.php.

◆ $tombstones

array MediaWiki\HookContainer\HookContainer::$tombstones = []

private

Tombstone count by hook name.

Definition at line 54 of file HookContainer.php.

The documentation for this class was generated from the following file:

includes/HookContainer/HookContainer.php

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ __construct()

Member Function Documentation

◆ callLegacyHook()

◆ clear()

◆ emitDeprecationWarnings()

◆ getHandlers()

◆ getLegacyHandlers()

◆ isRegistered()

◆ normalizeHandler()

◆ register()

◆ run()

◆ salvage()

◆ scopedRegister()

Member Data Documentation

◆ $dynamicHandlers

◆ $handlersByName

◆ $nextScopedRegisterId

◆ $objectFactory

◆ $registry

◆ $tombstones