includes/specials/SpecialAllPages.php

   1 <?php
   2 /**
   3  * Implements Special:Allpages
   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  * @file
  21  * @ingroup SpecialPage
  22  */
  23
  24 /**
  25  * Implements Special:Allpages
  26  *
  27  * @ingroup SpecialPage
  28  * @todo Rewrite using IndexPager
  29  */
  30 class SpecialAllPages extends IncludableSpecialPage {
  31
  32         /**
  33          * Maximum number of pages to show on single subpage.
  34          *
  35          * @var int $maxPerPage
  36          */
  37         protected $maxPerPage = 345;
  38
  39         /**
  40          * Determines, which message describes the input field 'nsfrom'.
  41          *
  42          * @var string $nsfromMsg
  43          */
  44         protected $nsfromMsg = 'allpagesfrom';
  45
  46         /**
  47          * @param string $name Name of the special page, as seen in links and URLs (default: 'Allpages')
  48          */
  49         function __construct( $name = 'Allpages' ) {
  50                 parent::__construct( $name );
  51         }
  52
  53         /**
  54          * Entry point : initialise variables and call subfunctions.
  55          *
  56          * @param string $par Becomes "FOO" when called like Special:Allpages/FOO (default null)
  57          */
  58         function execute( $par ) {
  59                 $request = $this->getRequest();
  60                 $out = $this->getOutput();
  61
  62                 $this->setHeaders();
  63                 $this->outputHeader();
  64                 $out->allowClickjacking();
  65
  66                 # GET values
  67                 $from = $request->getVal( 'from', null );
  68                 $to = $request->getVal( 'to', null );
  69                 $namespace = $request->getInt( 'namespace' );
  70
  71                 $miserMode = (bool)$this->getConfig()->get( 'MiserMode' );
  72
  73                 // Redirects filter is disabled in MiserMode
  74                 $hideredirects = $request->getBool( 'hideredirects', false ) && !$miserMode;
  75
  76                 $namespaces = $this->getLanguage()->getNamespaces();
  77
  78                 $out->setPageTitle(
  79                         ( $namespace > 0 && array_key_exists( $namespace, $namespaces ) ) ?
  80                                 $this->msg( 'allinnamespace', str_replace( '_', ' ', $namespaces[$namespace] ) ) :
  81                                 $this->msg( 'allarticles' )
  82                 );
  83                 $out->addModuleStyles( 'mediawiki.special' );
  84
  85                 if ( $par !== null ) {
  86                         $this->showChunk( $namespace, $par, $to, $hideredirects );
  87                 } elseif ( $from !== null && $to === null ) {
  88                         $this->showChunk( $namespace, $from, $to, $hideredirects );
  89                 } else {
  90                         $this->showToplevel( $namespace, $from, $to, $hideredirects );
  91                 }
  92         }
  93
  94         /**
  95          * Outputs the HTMLForm used on this page
  96          *
  97          * @param int $namespace A namespace constant (default NS_MAIN).
  98          * @param string $from DbKey we are starting listing at.
  99          * @param string $to DbKey we are ending listing at.
 100          * @param bool $hideRedirects Dont show redirects  (default false)
 101          */
 102         protected function outputHTMLForm( $namespace = NS_MAIN,
 103                 $from = '', $to = '', $hideRedirects = false
 104         ) {
 105                 $miserMode = (bool)$this->getConfig()->get( 'MiserMode' );
 106                 $fields = [
 107                         'from' => [
 108                                 'type' => 'text',
 109                                 'name' => 'from',
 110                                 'id' => 'nsfrom',
 111                                 'size' => 30,
 112                                 'label-message' => 'allpagesfrom',
 113                                 'default' => str_replace( '_', ' ', $from ),
 114                         ],
 115                         'to' => [
 116                                 'type' => 'text',
 117                                 'name' => 'to',
 118                                 'id' => 'nsto',
 119                                 'size' => 30,
 120                                 'label-message' => 'allpagesto',
 121                                 'default' => str_replace( '_', ' ', $to ),
 122                         ],
 123                         'namespace' => [
 124                                 'type' => 'namespaceselect',
 125                                 'name' => 'namespace',
 126                                 'id' => 'namespace',
 127                                 'label-message' => 'namespace',
 128                                 'all' => null,
 129                                 'value' => $namespace,
 130                         ],
 131                         'hideredirects' => [
 132                                 'type' => 'check',
 133                                 'name' => 'hideredirects',
 134                                 'id' => 'hidredirects',
 135                                 'label-message' => 'allpages-hide-redirects',
 136                                 'value' => $hideRedirects,
 137                         ],
 138                 ];
 139
 140                 if ( $miserMode ) {
 141                         unset( $fields['hideredirects'] );
 142                 }
 143
 144                 $form = HTMLForm::factory( 'table', $fields, $this->getContext() );
 145                 $form->setMethod( 'get' )
 146                         ->setWrapperLegendMsg( 'allpages' )
 147                         ->setSubmitTextMsg( 'allpagessubmit' )
 148                         ->prepareForm()
 149                         ->displayForm( false );
 150         }
 151
 152         /**
 153          * @param int $namespace (default NS_MAIN)
 154          * @param string $from List all pages from this name
 155          * @param string $to List all pages to this name
 156          * @param bool $hideredirects Dont show redirects (default false)
 157          */
 158         function showToplevel( $namespace = NS_MAIN, $from = '', $to = '', $hideredirects = false ) {
 159                 $from = Title::makeTitleSafe( $namespace, $from );
 160                 $to = Title::makeTitleSafe( $namespace, $to );
 161                 $from = ( $from && $from->isLocal() ) ? $from->getDBkey() : null;
 162                 $to = ( $to && $to->isLocal() ) ? $to->getDBkey() : null;
 163
 164                 $this->showChunk( $namespace, $from, $to, $hideredirects );
 165         }
 166
 167         /**
 168          * @param int $namespace Namespace (Default NS_MAIN)
 169          * @param string $from List all pages from this name (default false)
 170          * @param string $to List all pages to this name (default false)
 171          * @param bool $hideredirects Dont show redirects (default false)
 172          */
 173         function showChunk( $namespace = NS_MAIN, $from = false, $to = false, $hideredirects = false ) {
 174                 $output = $this->getOutput();
 175
 176                 $fromList = $this->getNamespaceKeyAndText( $namespace, $from );
 177                 $toList = $this->getNamespaceKeyAndText( $namespace, $to );
 178                 $namespaces = $this->getContext()->getLanguage()->getNamespaces();
 179                 $n = 0;
 180                 $prevTitle = null;
 181
 182                 if ( !$fromList || !$toList ) {
 183                         $out = $this->msg( 'allpagesbadtitle' )->parseAsBlock();
 184                 } elseif ( !array_key_exists( $namespace, $namespaces ) ) {
 185                         // Show errormessage and reset to NS_MAIN
 186                         $out = $this->msg( 'allpages-bad-ns', $namespace )->parse();
 187                         $namespace = NS_MAIN;
 188                 } else {
 189                         list( $namespace, $fromKey, $from ) = $fromList;
 190                         list( , $toKey, $to ) = $toList;
 191
 192                         $dbr = wfGetDB( DB_REPLICA );
 193                         $filterConds = [ 'page_namespace' => $namespace ];
 194                         if ( $hideredirects ) {
 195                                 $filterConds['page_is_redirect'] = 0;
 196                         }
 197
 198                         $conds = $filterConds;
 199                         $conds[] = 'page_title >= ' . $dbr->addQuotes( $fromKey );
 200                         if ( $toKey !== "" ) {
 201                                 $conds[] = 'page_title <= ' . $dbr->addQuotes( $toKey );
 202                         }
 203
 204                         $res = $dbr->select( 'page',
 205                                 [ 'page_namespace', 'page_title', 'page_is_redirect', 'page_id' ],
 206                                 $conds,
 207                                 __METHOD__,
 208                                 [
 209                                         'ORDER BY' => 'page_title',
 210                                         'LIMIT' => $this->maxPerPage + 1,
 211                                         'USE INDEX' => 'name_title',
 212                                 ]
 213                         );
 214
 215                         $linkRenderer = $this->getLinkRenderer();
 216                         if ( $res->numRows() > 0 ) {
 217                                 $out = Html::openElement( 'ul', [ 'class' => 'mw-allpages-chunk' ] );
 218
 219                                 while ( ( $n < $this->maxPerPage ) && ( $s = $res->fetchObject() ) ) {
 220                                         $t = Title::newFromRow( $s );
 221                                         if ( $t ) {
 222                                                 $out .= '<li' .
 223                                                         ( $s->page_is_redirect ? ' class="allpagesredirect"' : '' ) .
 224                                                         '>' .
 225                                                         $linkRenderer->makeLink( $t ) .
 226                                                         "</li>\n";
 227                                         } else {
 228                                                 $out .= '<li>[[' . htmlspecialchars( $s->page_title ) . "]]</li>\n";
 229                                         }
 230                                         $n++;
 231                                 }
 232                                 $out .= Html::closeElement( 'ul' );
 233
 234                                 if ( $res->numRows() > 2 ) {
 235                                         // Only apply CSS column styles if there's more than 2 entries.
 236                                         // Otherwise, rendering is broken as "mw-allpages-body"'s CSS column count is 3.
 237                                         $out = Html::rawElement( 'div', [ 'class' => 'mw-allpages-body' ], $out );
 238                                 }
 239                         } else {
 240                                 $out = '';
 241                         }
 242
 243                         if ( $fromKey !== '' && !$this->including() ) {
 244                                 # Get the first title from previous chunk
 245                                 $prevConds = $filterConds;
 246                                 $prevConds[] = 'page_title < ' . $dbr->addQuotes( $fromKey );
 247                                 $prevKey = $dbr->selectField(
 248                                         'page',
 249                                         'page_title',
 250                                         $prevConds,
 251                                         __METHOD__,
 252                                         [ 'ORDER BY' => 'page_title DESC', 'OFFSET' => $this->maxPerPage - 1 ]
 253                                 );
 254
 255                                 if ( $prevKey === false ) {
 256                                         # The previous chunk is not complete, need to link to the very first title
 257                                         # available in the database
 258                                         $prevKey = $dbr->selectField(
 259                                                 'page',
 260                                                 'page_title',
 261                                                 $prevConds,
 262                                                 __METHOD__,
 263                                                 [ 'ORDER BY' => 'page_title' ]
 264                                         );
 265                                 }
 266
 267                                 if ( $prevKey !== false ) {
 268                                         $prevTitle = Title::makeTitle( $namespace, $prevKey );
 269                                 }
 270                         }
 271                 }
 272
 273                 if ( $this->including() ) {
 274                         $output->addHTML( $out );
 275                         return;
 276                 }
 277
 278                 $navLinks = [];
 279                 $self = $this->getPageTitle();
 280
 281                 $linkRenderer = $this->getLinkRenderer();
 282                 // Generate a "previous page" link if needed
 283                 if ( $prevTitle ) {
 284                         $query = [ 'from' => $prevTitle->getText() ];
 285
 286                         if ( $namespace ) {
 287                                 $query['namespace'] = $namespace;
 288                         }
 289
 290                         if ( $hideredirects ) {
 291                                 $query['hideredirects'] = $hideredirects;
 292                         }
 293
 294                         $navLinks[] = $linkRenderer->makeKnownLink(
 295                                 $self,
 296                                 $this->msg( 'prevpage', $prevTitle->getText() )->text(),
 297                                 [],
 298                                 $query
 299                         );
 300
 301                 }
 302
 303                 // Generate a "next page" link if needed
 304                 if ( $n == $this->maxPerPage && $s = $res->fetchObject() ) {
 305                         # $s is the first link of the next chunk
 306                         $t = Title::makeTitle( $namespace, $s->page_title );
 307                         $query = [ 'from' => $t->getText() ];
 308
 309                         if ( $namespace ) {
 310                                 $query['namespace'] = $namespace;
 311                         }
 312
 313                         if ( $hideredirects ) {
 314                                 $query['hideredirects'] = $hideredirects;
 315                         }
 316
 317                         $navLinks[] = $linkRenderer->makeKnownLink(
 318                                 $self,
 319                                 $this->msg( 'nextpage', $t->getText() )->text(),
 320                                 [],
 321                                 $query
 322                         );
 323                 }
 324
 325                 $this->outputHTMLForm( $namespace, $from, $to, $hideredirects );
 326
 327                 if ( count( $navLinks ) ) {
 328                         // Add pagination links
 329                         $pagination = Html::rawElement( 'div',
 330                                 [ 'class' => 'mw-allpages-nav' ],
 331                                 $this->getLanguage()->pipeList( $navLinks )
 332                         );
 333
 334                         $output->addHTML( $pagination );
 335                         $out .= Html::element( 'hr' ) . $pagination; // Footer
 336                 }
 337
 338                 $output->addHTML( $out );
 339         }
 340
 341         /**
 342          * @param int $ns The namespace of the article
 343          * @param string $text The name of the article
 344          * @return array|null [ int namespace, string dbkey, string pagename ] or null on error
 345          */
 346         protected function getNamespaceKeyAndText( $ns, $text ) {
 347                 if ( $text == '' ) {
 348                         # shortcut for common case
 349                         return [ $ns, '', '' ];
 350                 }
 351
 352                 $t = Title::makeTitleSafe( $ns, $text );
 353                 if ( $t && $t->isLocal() ) {
 354                         return [ $t->getNamespace(), $t->getDBkey(), $t->getText() ];
 355                 } elseif ( $t ) {
 356                         return null;
 357                 }
 358
 359                 # try again, in case the problem was an empty pagename
 360                 $text = preg_replace( '/(#|$)/', 'X$1', $text );
 361                 $t = Title::makeTitleSafe( $ns, $text );
 362                 if ( $t && $t->isLocal() ) {
 363                         return [ $t->getNamespace(), '', '' ];
 364                 } else {
 365                         return null;
 366                 }
 367         }
 368
 369         /**
 370          * Return an array of subpages beginning with $search that this special page will accept.
 371          *
 372          * @param string $search Prefix to search for
 373          * @param int $limit Maximum number of results to return (usually 10)
 374          * @param int $offset Number of results to skip (usually 0)
 375          * @return string[] Matching subpages
 376          */
 377         public function prefixSearchSubpages( $search, $limit, $offset ) {
 378                 return $this->prefixSearchString( $search, $limit, $offset );
 379         }
 380
 381         protected function getGroupName() {
 382                 return 'pages';
 383         }
 384 }