includes/specials/SpecialFilepath.php

   1 <?php
   2 /**
   3  * Implements Special:Filepath
   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  * A special page that redirects to the URL of a given file
  26  *
  27  * @ingroup SpecialPage
  28  */
  29 class SpecialFilepath extends SpecialPage {
  30
  31         function __construct() {
  32                 parent::__construct( 'Filepath' );
  33         }
  34
  35         function execute( $par ) {
  36                 $this->setHeaders();
  37                 $this->outputHeader();
  38
  39                 $request = $this->getRequest();
  40                 $file = !is_null( $par ) ? $par : $request->getText( 'file' );
  41
  42                 $title = Title::newFromText( $file, NS_FILE );
  43
  44                 if ( ! $title instanceof Title || $title->getNamespace() != NS_FILE ) {
  45                         $this->showForm( $title );
  46                 } else {
  47                         $file = wfFindFile( $title );
  48
  49                         if ( $file && $file->exists() ) {
  50                                 // Default behaviour: Use the direct link to the file.
  51                                 $url = $file->getURL();
  52                                 $width = $request->getInt( 'width', -1 );
  53                                 $height = $request->getInt( 'height', -1 );
  54
  55                                 // If a width is requested...
  56                                 if ( $width != -1 ) {
  57                                         $mto = $file->transform( array( 'width' => $width, 'height' => $height ) );
  58                                         // ... and we can
  59                                         if ( $mto && !$mto->isError() ) {
  60                                                 // ... change the URL to point to a thumbnail.
  61                                                 $url = $mto->getURL();
  62                                         }
  63                                 }
  64                                 $this->getOutput()->redirect( $url );
  65                         } else {
  66                                 $this->getOutput()->setStatusCode( 404 );
  67                                 $this->showForm( $title );
  68                         }
  69                 }
  70         }
  71
  72         /**
  73          * @param $title Title
  74          */
  75         function showForm( $title ) {
  76                 global $wgScript;
  77
  78                 $this->getOutput()->addHTML(
  79                         Html::openElement( 'form', array( 'method' => 'get', 'action' => $wgScript, 'id' => 'specialfilepath' ) ) .
  80                         Html::openElement( 'fieldset' ) .
  81                         Html::element( 'legend', null, wfMsg( 'filepath' ) ) .
  82                         Html::hidden( 'title', $this->getTitle()->getPrefixedText() ) .
  83                         Xml::inputLabel( wfMsg( 'filepath-page' ), 'file', 'file', 25, is_object( $title ) ? $title->getText() : '' ) . ' ' .
  84                         Xml::submitButton( wfMsg( 'filepath-submit' ) ) . "\n" .
  85                         Html::closeElement( 'fieldset' ) .
  86                         Html::closeElement( 'form' )
  87                 );
  88         }
  89 }