includes/context/DerivativeContext.php

   1 <?php
   2 /**
   3  * Request-dependant objects containers.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @since 1.19
  21  *
  22  * @author Daniel Friesen
  23  * @file
  24  */
  25
  26 /**
  27  * An IContextSource implementation which will inherit context from another source
  28  * but allow individual pieces of context to be changed locally
  29  * eg: A ContextSource that can inherit from the main RequestContext but have
  30  *     a different Title instance set on it.
  31  */
  32 class DerivativeContext extends ContextSource {
  33
  34         /**
  35          * @var WebRequest
  36          */
  37         private $request;
  38
  39         /**
  40          * @var Title
  41          */
  42         private $title;
  43
  44         /**
  45          * @var OutputPage
  46          */
  47         private $output;
  48
  49         /**
  50          * @var User
  51          */
  52         private $user;
  53
  54         /**
  55          * @var Language
  56          */
  57         private $lang;
  58
  59         /**
  60          * @var Skin
  61          */
  62         private $skin;
  63
  64         /**
  65          * Constructor
  66          * @param $context IContextSource Context to inherit from
  67          */
  68         public function __construct( IContextSource $context ) {
  69                 $this->setContext( $context );
  70         }
  71
  72         /**
  73          * Set the WebRequest object
  74          *
  75          * @param $r WebRequest object
  76          */
  77         public function setRequest( WebRequest $r ) {
  78                 $this->request = $r;
  79         }
  80
  81         /**
  82          * Get the WebRequest object
  83          *
  84          * @return WebRequest
  85          */
  86         public function getRequest() {
  87                 if ( !is_null( $this->request ) ) {
  88                         return $this->request;
  89                 } else {
  90                         return $this->getContext()->getRequest();
  91                 }
  92         }
  93
  94         /**
  95          * Set the Title object
  96          *
  97          * @param $t Title object
  98          */
  99         public function setTitle( Title $t ) {
 100                 $this->title = $t;
 101         }
 102
 103         /**
 104          * Get the Title object
 105          *
 106          * @return Title
 107          */
 108         public function getTitle() {
 109                 if ( !is_null( $this->title ) ) {
 110                         return $this->title;
 111                 } else {
 112                         return $this->getContext()->getTitle();
 113                 }
 114         }
 115
 116         /**
 117          * @param $o OutputPage
 118          */
 119         public function setOutput( OutputPage $o ) {
 120                 $this->output = $o;
 121         }
 122
 123         /**
 124          * Get the OutputPage object
 125          *
 126          * @return OutputPage object
 127          */
 128         public function getOutput() {
 129                 if ( !is_null( $this->output ) ) {
 130                         return $this->output;
 131                 } else {
 132                         return $this->getContext()->getOutput();
 133                 }
 134         }
 135
 136         /**
 137          * Set the User object
 138          *
 139          * @param $u User
 140          */
 141         public function setUser( User $u ) {
 142                 $this->user = $u;
 143         }
 144
 145         /**
 146          * Get the User object
 147          *
 148          * @return User
 149          */
 150         public function getUser() {
 151                 if ( !is_null( $this->user ) ) {
 152                         return $this->user;
 153                 } else {
 154                         return $this->getContext()->getUser();
 155                 }
 156         }
 157
 158         /**
 159          * Set the Language object
 160          *
 161          * @param $l Mixed Language instance or language code
 162          */
 163         public function setLang( $l ) {
 164                 if ( $l instanceof Language ) {
 165                         $this->lang = $l;
 166                 } elseif ( is_string( $l ) ) {
 167                         $l = self::sanitizeLangCode( $l ); // FIXME: Undefined method, is at RequestContext::sanitizeLangCode()
 168                         $obj = Language::factory( $l );
 169                         $this->lang = $obj;
 170                 } else {
 171                         throw new MWException( __METHOD__ . " was passed an invalid type of data." );
 172                 }
 173         }
 174
 175         /**
 176          * Get the Language object
 177          *
 178          * @return Language
 179          */
 180         public function getLang() {
 181                 if ( !is_null( $this->lang ) ) {
 182                         return $this->lang;
 183                 } else {
 184                         return $this->getContext()->getLang();
 185                 }
 186         }
 187
 188         /**
 189          * Set the Skin object
 190          *
 191          * @param $s Skin
 192          */
 193         public function setSkin( Skin $s ) {
 194                 $this->skin = clone $s;
 195                 $this->skin->setContext( $this );
 196         }
 197
 198         /**
 199          * Get the Skin object
 200          *
 201          * @return Skin
 202          */
 203         public function getSkin() {
 204                 if ( !is_null( $this->skin ) ) {
 205                         return $this->skin;
 206                 } else {
 207                         return $this->getContext()->getSkin();
 208                 }
 209         }
 210
 211 }
 212