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<?php
/**
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @author Daniel Friesen
* @file
*/
use Liuggio\StatsdClient\Factory\StatsdDataFactory;
use MediaWiki\MediaWikiServices;
/**
* An IContextSource implementation which will inherit context from another source
* but allow individual pieces of context to be changed locally
* eg: A ContextSource that can inherit from the main RequestContext but have
* a different Title instance set on it.
* @since 1.19
*/
class DerivativeContext extends ContextSource implements MutableContext {
/**
* @var WebRequest
*/
private $request;
/**
* @var Title
*/
private $title;
/**
* @var WikiPage
*/
private $wikipage;
/**
* @var OutputPage
*/
private $output;
/**
* @var User
*/
private $user;
/**
* @var Language
*/
private $lang;
/**
* @var Skin
*/
private $skin;
/**
* @var Config
*/
private $config;
/**
* @var Timing
*/
private $timing;
/**
* Constructor
* @param IContextSource $context Context to inherit from
*/
public function __construct( IContextSource $context ) {
$this->setContext( $context );
}
/**
* Set the SiteConfiguration object
*
* @param Config $s
*/
public function setConfig( Config $s ) {
$this->config = $s;
}
/**
* Get the Config object
*
* @return Config
*/
public function getConfig() {
if ( !is_null( $this->config ) ) {
return $this->config;
} else {
return $this->getContext()->getConfig();
}
}
/**
* Get the stats object
*
* @deprecated since 1.27 use a StatsdDataFactory from MediaWikiServices (preferably injected)
*
* @return StatsdDataFactory
*/
public function getStats() {
return MediaWikiServices::getInstance()->getStatsdDataFactory();
}
/**
* Get the timing object
*
* @return Timing
*/
public function getTiming() {
if ( !is_null( $this->timing ) ) {
return $this->timing;
} else {
return $this->getContext()->getTiming();
}
}
/**
* Set the WebRequest object
*
* @param WebRequest $r
*/
public function setRequest( WebRequest $r ) {
$this->request = $r;
}
/**
* Get the WebRequest object
*
* @return WebRequest
*/
public function getRequest() {
if ( !is_null( $this->request ) ) {
return $this->request;
} else {
return $this->getContext()->getRequest();
}
}
/**
* Set the Title object
*
* @param Title $t
*/
public function setTitle( Title $t ) {
$this->title = $t;
}
/**
* Get the Title object
*
* @return Title|null
*/
public function getTitle() {
if ( !is_null( $this->title ) ) {
return $this->title;
} else {
return $this->getContext()->getTitle();
}
}
/**
* Check whether a WikiPage object can be get with getWikiPage().
* Callers should expect that an exception is thrown from getWikiPage()
* if this method returns false.
*
* @since 1.19
* @return bool
*/
public function canUseWikiPage() {
if ( $this->wikipage !== null ) {
return true;
} elseif ( $this->title !== null ) {
return $this->title->canExist();
} else {
return $this->getContext()->canUseWikiPage();
}
}
/**
* Set the WikiPage object
*
* @since 1.19
* @param WikiPage $p
*/
public function setWikiPage( WikiPage $p ) {
$this->wikipage = $p;
}
/**
* Get the WikiPage object.
* May throw an exception if there's no Title object set or the Title object
* belongs to a special namespace that doesn't have WikiPage, so use first
* canUseWikiPage() to check whether this method can be called safely.
*
* @since 1.19
* @return WikiPage
*/
public function getWikiPage() {
if ( !is_null( $this->wikipage ) ) {
return $this->wikipage;
} else {
return $this->getContext()->getWikiPage();
}
}
/**
* Set the OutputPage object
*
* @param OutputPage $o
*/
public function setOutput( OutputPage $o ) {
$this->output = $o;
}
/**
* Get the OutputPage object
*
* @return OutputPage
*/
public function getOutput() {
if ( !is_null( $this->output ) ) {
return $this->output;
} else {
return $this->getContext()->getOutput();
}
}
/**
* Set the User object
*
* @param User $u
*/
public function setUser( User $u ) {
$this->user = $u;
}
/**
* Get the User object
*
* @return User
*/
public function getUser() {
if ( !is_null( $this->user ) ) {
return $this->user;
} else {
return $this->getContext()->getUser();
}
}
/**
* Set the Language object
*
* @param Language|string $l Language instance or language code
* @throws MWException
* @since 1.19
*/
public function setLanguage( $l ) {
if ( $l instanceof Language ) {
$this->lang = $l;
} elseif ( is_string( $l ) ) {
$l = RequestContext::sanitizeLangCode( $l );
$obj = Language::factory( $l );
$this->lang = $obj;
} else {
throw new MWException( __METHOD__ . " was passed an invalid type of data." );
}
}
/**
* Get the Language object
*
* @return Language
* @since 1.19
*/
public function getLanguage() {
if ( !is_null( $this->lang ) ) {
return $this->lang;
} else {
return $this->getContext()->getLanguage();
}
}
/**
* Set the Skin object
*
* @param Skin $s
*/
public function setSkin( Skin $s ) {
$this->skin = clone $s;
$this->skin->setContext( $this );
}
/**
* Get the Skin object
*
* @return Skin
*/
public function getSkin() {
if ( !is_null( $this->skin ) ) {
return $this->skin;
} else {
return $this->getContext()->getSkin();
}
}
/**
* Get a message using the current context.
*
* This can't just inherit from ContextSource, since then
* it would set only the original context, and not take
* into account any changes.
*
* @param mixed $args,... Arguments to wfMessage
* @return Message
*/
public function msg() {
$args = func_get_args();
return call_user_func_array( 'wfMessage', $args )->setContext( $this );
}
}