includes/page/CategoryPage.php

   1 <?php
   2 /**
   3  * Special handling for category description pages.
   4  * Modelled after ImagePage.php.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  19  * http://www.gnu.org/copyleft/gpl.html
  20  *
  21  * @file
  22  */
  23
  24 /**
  25  * Special handling for category description pages, showing pages,
  26  * subcategories and file that belong to the category
  27  */
  28 class CategoryPage extends Article {
  29         # Subclasses can change this to override the viewer class.
  30         protected $mCategoryViewerClass = 'CategoryViewer';
  31
  32         /**
  33          * @var WikiCategoryPage
  34          */
  35         protected $mPage;
  36
  37         /**
  38          * @param Title $title
  39          * @return WikiCategoryPage
  40          */
  41         protected function newPage( Title $title ) {
  42                 // Overload mPage with a category-specific page
  43                 return new WikiCategoryPage( $title );
  44         }
  45
  46         /**
  47          * Constructor from a page id
  48          * @param int $id Article ID to load
  49          * @return CategoryPage|null
  50          */
  51         public static function newFromID( $id ) {
  52                 $t = Title::newFromID( $id );
  53                 # @todo FIXME: Doesn't inherit right
  54                 return $t == null ? null : new self( $t );
  55                 # return $t == null ? null : new static( $t ); // PHP 5.3
  56         }
  57
  58         function view() {
  59                 $request = $this->getContext()->getRequest();
  60                 $diff = $request->getVal( 'diff' );
  61                 $diffOnly = $request->getBool( 'diffonly',
  62                         $this->getContext()->getUser()->getOption( 'diffonly' ) );
  63
  64                 if ( $diff !== null && $diffOnly ) {
  65                         parent::view();
  66                         return;
  67                 }
  68
  69                 if ( !Hooks::run( 'CategoryPageView', [ &$this ] ) ) {
  70                         return;
  71                 }
  72
  73                 $title = $this->getTitle();
  74                 if ( $title->inNamespace( NS_CATEGORY ) ) {
  75                         $this->openShowCategory();
  76                 }
  77
  78                 parent::view();
  79
  80                 if ( $title->inNamespace( NS_CATEGORY ) ) {
  81                         $this->closeShowCategory();
  82                 }
  83         }
  84
  85         function openShowCategory() {
  86                 # For overloading
  87         }
  88
  89         function closeShowCategory() {
  90                 // Use these as defaults for back compat --catrope
  91                 $request = $this->getContext()->getRequest();
  92                 $oldFrom = $request->getVal( 'from' );
  93                 $oldUntil = $request->getVal( 'until' );
  94
  95                 $reqArray = $request->getValues();
  96
  97                 $from = $until = [];
  98                 foreach ( [ 'page', 'subcat', 'file' ] as $type ) {
  99                         $from[$type] = $request->getVal( "{$type}from", $oldFrom );
 100                         $until[$type] = $request->getVal( "{$type}until", $oldUntil );
 101
 102                         // Do not want old-style from/until propagating in nav links.
 103                         if ( !isset( $reqArray["{$type}from"] ) && isset( $reqArray["from"] ) ) {
 104                                 $reqArray["{$type}from"] = $reqArray["from"];
 105                         }
 106                         if ( !isset( $reqArray["{$type}to"] ) && isset( $reqArray["to"] ) ) {
 107                                 $reqArray["{$type}to"] = $reqArray["to"];
 108                         }
 109                 }
 110
 111                 unset( $reqArray["from"] );
 112                 unset( $reqArray["to"] );
 113
 114                 $viewer = new $this->mCategoryViewerClass(
 115                         $this->getContext()->getTitle(),
 116                         $this->getContext(),
 117                         $from,
 118                         $until,
 119                         $reqArray
 120                 );
 121                 $out = $this->getContext()->getOutput();
 122                 $out->addHTML( $viewer->getHTML() );
 123                 $this->addHelpLink( 'Help:Categories' );
 124         }
 125 }