includes/specials/SpecialPrefixindex.php

   1 <?php
   2 /**
   3  * Implements Special:Prefixindex
   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:Prefixindex
  26  *
  27  * @ingroup SpecialPage
  28  */
  29 class SpecialPrefixindex extends SpecialAllPages {
  30
  31         /**
  32          * Whether to remove the searched prefix from the displayed link. Useful
  33          * for inclusion of a set of sub pages in a root page.
  34          */
  35         protected $stripPrefix = false;
  36
  37         protected $hideRedirects = false;
  38
  39         // number of columns in output table
  40         protected $columns = 3;
  41
  42         // Inherit $maxPerPage
  43
  44         function __construct() {
  45                 parent::__construct( 'Prefixindex' );
  46         }
  47
  48         /**
  49          * Entry point : initialise variables and call subfunctions.
  50          * @param string $par Becomes "FOO" when called like Special:Prefixindex/FOO (default null)
  51          */
  52         function execute( $par ) {
  53                 global $wgContLang;
  54
  55                 $this->setHeaders();
  56                 $this->outputHeader();
  57
  58                 $out = $this->getOutput();
  59                 $out->addModuleStyles( 'mediawiki.special' );
  60
  61                 # GET values
  62                 $request = $this->getRequest();
  63                 $from = $request->getVal( 'from', '' );
  64                 $prefix = $request->getVal( 'prefix', '' );
  65                 $ns = $request->getIntOrNull( 'namespace' );
  66                 $namespace = (int)$ns; // if no namespace given, use 0 (NS_MAIN).
  67                 $this->hideRedirects = $request->getBool( 'hideredirects', $this->hideRedirects );
  68                 $this->stripPrefix = $request->getBool( 'stripprefix', $this->stripPrefix );
  69                 $this->columns = $request->getInt( 'columns', $this->columns );
  70
  71                 $namespaces = $wgContLang->getNamespaces();
  72                 $out->setPageTitle(
  73                         ( $namespace > 0 && array_key_exists( $namespace, $namespaces ) )
  74                                 ? $this->msg( 'prefixindex-namespace', str_replace( '_', ' ', $namespaces[$namespace] ) )
  75                                 : $this->msg( 'prefixindex' )
  76                 );
  77
  78                 $showme = '';
  79                 if ( $par !== null ) {
  80                         $showme = $par;
  81                 } elseif ( $prefix != '' ) {
  82                         $showme = $prefix;
  83                 } elseif ( $from != '' && $ns === null ) {
  84                         // For back-compat with Special:Allpages
  85                         // Don't do this if namespace is passed, so paging works when doing NS views.
  86                         $showme = $from;
  87                 }
  88
  89                 // Bug 27864: if transcluded, show all pages instead of the form.
  90                 if ( $this->including() || $showme != '' || $ns !== null ) {
  91                         $this->showPrefixChunk( $namespace, $showme, $from );
  92                 } else {
  93                         $out->addHTML( $this->namespacePrefixForm( $namespace, null ) );
  94                 }
  95         }
  96
  97         /**
  98          * HTML for the top form
  99          * @param int $namespace A namespace constant (default NS_MAIN).
 100          * @param string $from DbKey we are starting listing at.
 101          * @return string
 102          */
 103         protected function namespacePrefixForm( $namespace = NS_MAIN, $from = '' ) {
 104                 $out = Xml::openElement( 'div', array( 'class' => 'namespaceoptions' ) );
 105                 $out .= Xml::openElement(
 106                         'form',
 107                         array( 'method' => 'get', 'action' => $this->getConfig()->get( 'Script' ) )
 108                 );
 109                 $out .= Html::hidden( 'title', $this->getPageTitle()->getPrefixedText() );
 110                 $out .= Xml::openElement( 'fieldset' );
 111                 $out .= Xml::element( 'legend', null, $this->msg( 'allpages' )->text() );
 112                 $out .= Xml::openElement( 'table', array( 'id' => 'nsselect', 'class' => 'allpages' ) );
 113                 $out .= "<tr>
 114                                 <td class='mw-label'>" .
 115                         Xml::label( $this->msg( 'allpagesprefix' )->text(), 'nsfrom' ) .
 116                         "</td>
 117                                 <td class='mw-input'>" .
 118                         Xml::input( 'prefix', 30, str_replace( '_', ' ', $from ), array( 'id' => 'nsfrom' ) ) .
 119                         "</td>
 120                         </tr>
 121                         <tr>
 122                         <td class='mw-label'>" .
 123                         Xml::label( $this->msg( 'namespace' )->text(), 'namespace' ) .
 124                         "</td>
 125                                 <td class='mw-input'>" .
 126                         Html::namespaceSelector( array(
 127                                 'selected' => $namespace,
 128                         ), array(
 129                                 'name' => 'namespace',
 130                                 'id' => 'namespace',
 131                                 'class' => 'namespaceselector',
 132                         ) ) .
 133                         Xml::checkLabel(
 134                                 $this->msg( 'allpages-hide-redirects' )->text(),
 135                                 'hideredirects',
 136                                 'hideredirects',
 137                                 $this->hideRedirects
 138                         ) . ' ' .
 139                         Xml::checkLabel(
 140                                 $this->msg( 'prefixindex-strip' )->text(),
 141                                 'stripprefix',
 142                                 'stripprefix',
 143                                 $this->stripPrefix
 144                         ) . ' ' .
 145                         Xml::submitButton( $this->msg( 'allpagessubmit' )->text() ) .
 146                         "</td>
 147                         </tr>";
 148                 $out .= Xml::closeElement( 'table' );
 149                 $out .= Xml::closeElement( 'fieldset' );
 150                 $out .= Xml::closeElement( 'form' );
 151                 $out .= Xml::closeElement( 'div' );
 152
 153                 return $out;
 154         }
 155
 156         /**
 157          * @param int $namespace Default NS_MAIN
 158          * @param string $prefix
 159          * @param string $from List all pages from this name (default false)
 160          */
 161         protected function showPrefixChunk( $namespace = NS_MAIN, $prefix, $from = null ) {
 162                 global $wgContLang;
 163
 164                 if ( $from === null ) {
 165                         $from = $prefix;
 166                 }
 167
 168                 $fromList = $this->getNamespaceKeyAndText( $namespace, $from );
 169                 $prefixList = $this->getNamespaceKeyAndText( $namespace, $prefix );
 170                 $namespaces = $wgContLang->getNamespaces();
 171                 $res = null;
 172
 173                 if ( !$prefixList || !$fromList ) {
 174                         $out = $this->msg( 'allpagesbadtitle' )->parseAsBlock();
 175                 } elseif ( !array_key_exists( $namespace, $namespaces ) ) {
 176                         // Show errormessage and reset to NS_MAIN
 177                         $out = $this->msg( 'allpages-bad-ns', $namespace )->parse();
 178                         $namespace = NS_MAIN;
 179                 } else {
 180                         list( $namespace, $prefixKey, $prefix ) = $prefixList;
 181                         list( /* $fromNS */, $fromKey, ) = $fromList;
 182
 183                         ### @todo FIXME: Should complain if $fromNs != $namespace
 184
 185                         $dbr = wfGetDB( DB_SLAVE );
 186
 187                         $conds = array(
 188                                 'page_namespace' => $namespace,
 189                                 'page_title' . $dbr->buildLike( $prefixKey, $dbr->anyString() ),
 190                                 'page_title >= ' . $dbr->addQuotes( $fromKey ),
 191                         );
 192
 193                         if ( $this->hideRedirects ) {
 194                                 $conds['page_is_redirect'] = 0;
 195                         }
 196
 197                         $res = $dbr->select( 'page',
 198                                 array( 'page_namespace', 'page_title', 'page_is_redirect' ),
 199                                 $conds,
 200                                 __METHOD__,
 201                                 array(
 202                                         'ORDER BY' => 'page_title',
 203                                         'LIMIT' => $this->maxPerPage + 1,
 204                                         'USE INDEX' => 'name_title',
 205                                 )
 206                         );
 207
 208                         ### @todo FIXME: Side link to previous
 209
 210                         $n = 0;
 211                         if ( $res->numRows() > 0 ) {
 212                                 $out = Xml::openElement( 'table', array( 'class' => 'mw-prefixindex-list-table' ) );
 213
 214                                 $prefixLength = strlen( $prefix );
 215                                 while ( ( $n < $this->maxPerPage ) && ( $s = $res->fetchObject() ) ) {
 216                                         $t = Title::makeTitle( $s->page_namespace, $s->page_title );
 217                                         if ( $t ) {
 218                                                 $displayed = $t->getText();
 219                                                 // Try not to generate unclickable links
 220                                                 if ( $this->stripPrefix && $prefixLength !== strlen( $displayed ) ) {
 221                                                         $displayed = substr( $displayed, $prefixLength );
 222                                                 }
 223                                                 $link = ( $s->page_is_redirect ? '<div class="allpagesredirect">' : '' ) .
 224                                                         Linker::linkKnown(
 225                                                                 $t,
 226                                                                 htmlspecialchars( $displayed ),
 227                                                                 $s->page_is_redirect ? array( 'class' => 'mw-redirect' ) : array()
 228                                                         ) .
 229                                                         ( $s->page_is_redirect ? '</div>' : '' );
 230                                         } else {
 231                                                 $link = '[[' . htmlspecialchars( $s->page_title ) . ']]';
 232                                         }
 233                                         if ( $n % $this->columns == 0 ) {
 234                                                 $out .= '<tr>';
 235                                         }
 236                                         $out .= "<td>$link</td>";
 237                                         $n++;
 238                                         if ( $n % $this->columns == 0 ) {
 239                                                 $out .= '</tr>';
 240                                         }
 241                                 }
 242
 243                                 if ( $n % $this->columns != 0 ) {
 244                                         $out .= '</tr>';
 245                                 }
 246
 247                                 $out .= Xml::closeElement( 'table' );
 248                         } else {
 249                                 $out = '';
 250                         }
 251                 }
 252
 253                 $footer = '';
 254                 if ( $this->including() ) {
 255                         $out2 = '';
 256                 } else {
 257                         $nsForm = $this->namespacePrefixForm( $namespace, $prefix );
 258                         $self = $this->getPageTitle();
 259                         $out2 = Xml::openElement( 'table', array( 'id' => 'mw-prefixindex-nav-table' ) ) .
 260                                 '<tr>
 261                                         <td>' .
 262                                 $nsForm .
 263                                 '</td>
 264                                 <td id="mw-prefixindex-nav-form" class="mw-prefixindex-nav">';
 265
 266                         if ( $res && ( $n == $this->maxPerPage ) && ( $s = $res->fetchObject() ) ) {
 267                                 $query = array(
 268                                         'from' => $s->page_title,
 269                                         'prefix' => $prefix,
 270                                         'hideredirects' => $this->hideRedirects,
 271                                         'stripprefix' => $this->stripPrefix,
 272                                         'columns' => $this->columns,
 273                                 );
 274
 275                                 if ( $namespace || $prefix == '' ) {
 276                                         // Keep the namespace even if it's 0 for empty prefixes.
 277                                         // This tells us we're not just a holdover from old links.
 278                                         $query['namespace'] = $namespace;
 279                                 }
 280
 281                                 $nextLink = Linker::linkKnown(
 282                                         $self,
 283                                         $this->msg( 'nextpage', str_replace( '_', ' ', $s->page_title ) )->escaped(),
 284                                         array(),
 285                                         $query
 286                                 );
 287
 288                                 $out2 .= $nextLink;
 289
 290                                 $footer = "\n" . Html::element( 'hr' ) .
 291                                         Html::rawElement(
 292                                                 'div',
 293                                                 array( 'class' => 'mw-prefixindex-nav' ),
 294                                                 $nextLink
 295                                         );
 296                         }
 297                         $out2 .= "</td></tr>" .
 298                                 Xml::closeElement( 'table' );
 299                 }
 300
 301                 $this->getOutput()->addHTML( $out2 . $out . $footer );
 302         }
 303
 304         protected function getGroupName() {
 305                 return 'pages';
 306         }
 307 }