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