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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
*
* @file
*/
namespace MediaWiki\Context;
use MediaWiki\Config\Config;
use MediaWiki\Language\Language;
use MediaWiki\Language\LocalizationContext;
use MediaWiki\Output\OutputPage;
use MediaWiki\Page\WikiPage;
use MediaWiki\Permissions\Authority;
use MediaWiki\Request\WebRequest;
use MediaWiki\Session\CsrfTokenSetProvider;
use MediaWiki\Skin\Skin;
use MediaWiki\Title\Title;
use MediaWiki\User\User;
use Wikimedia\Timing\Timing;
/**
* Interface for objects which can provide a MediaWiki context on request
*
* Context objects contain request-dependent objects that manage the core
* web request/response logic for essentially all requests to MediaWiki.
* The contained objects include:
* a) Key objects that depend (for construction/loading) on the HTTP request
* b) Key objects used for response building and PHP session state control
* c) Performance metric deltas accumulated from request execution
* d) The site configuration object
* All these objects are useful for the vast majority of MediaWiki requests.
* The site configuration object is included on grounds of extreme
* utility, even though it should not depend on the web request.
*
* More specifically, the scope of the context includes:
* a) Objects that represent the HTTP request/response and PHP session state
* b) Object representing the MediaWiki user (as determined by the HTTP request)
* c) Primary MediaWiki output builder objects (OutputPage, user skin object)
* d) The language object for the user/request
* e) The title and wiki page objects requested via URL (if any)
* f) Performance metric deltas accumulated from request execution
* g) The site configuration object
*
* This class is not intended as a service-locator nor a service singleton.
* Objects that only depend on site configuration do not belong here (aside
* from Config itself). Objects that represent persistent data stores do not
* belong here either. Session state changes should only be propagated on
* shutdown by separate persistence handler objects, for example.
*
* Must not be implemented directly by extensions, extend ContextSource instead.
*
* @since 1.18
* @stable to type
* @author Happy-melon
*/
interface IContextSource extends LocalizationContext, CsrfTokenSetProvider {
/**
* @return WebRequest
*/
public function getRequest();
/**
* @return Title|null
*/
public function getTitle();
/**
* Check whether a WikiPage object can be obtained 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();
/**
* 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();
/**
* Get the action name for the current web request.
*
* @since 1.38
* @return string
*/
public function getActionName(): string;
/**
* @return OutputPage
*/
public function getOutput();
/**
* @return User
*/
public function getUser();
/**
* @since 1.36
* @return Authority
*/
public function getAuthority(): Authority;
/**
* @since 1.19
* @return Language
*/
public function getLanguage();
/**
* @return Skin
*/
public function getSkin();
/**
* Get the site configuration
*
* @since 1.23
* @return Config
*/
public function getConfig();
/**
* @since 1.27
* @return Timing
*/
public function getTiming();
/**
* Export the resolved user IP, HTTP headers, user ID, and session ID.
*
* The result will be reasonably sized to allow for serialization.
*
* @return array
* @since 1.21
*/
public function exportSession();
}
/** @deprecated class alias since 1.42 */
class_alias( IContextSource::class, 'IContextSource' );