includes/ImageQueryPage.php

   1 <?php
   2
   3 /**
   4  * Variant of QueryPage which uses a gallery to output results, thus
   5  * suited for reports generating images
   6  *
   7  * @package MediaWiki
   8  * @addtogroup SpecialPage
   9  * @author Rob Church <robchur@gmail.com>
  10  */
  11 class ImageQueryPage extends QueryPage {
  12
  13         /**
  14          * Format and output report results using the given information plus
  15          * OutputPage
  16          *
  17          * @param OutputPage $out OutputPage to print to
  18          * @param Skin $skin User skin to use
  19          * @param Database $dbr Database (read) connection to use
  20          * @param int $res Result pointer
  21          * @param int $num Number of available result rows
  22          * @param int $offset Paging offset
  23          */
  24         protected function outputResults( $out, $skin, $dbr, $res, $num, $offset ) {
  25                 if( $num > 0 ) {
  26                         $gallery = new ImageGallery();
  27                         $gallery->useSkin( $skin );
  28
  29                         # $res might contain the whole 1,000 rows, so we read up to
  30                         # $num [should update this to use a Pager]
  31                         for( $i = 0; $i < $num && $row = $dbr->fetchObject( $res ); $i++ ) {
  32                                 $image = $this->prepareImage( $row );
  33                                 if( $image instanceof Image ) {
  34                                         $gallery->add( $image, $this->getCellHtml( $row ) );
  35                                 }
  36                         }
  37
  38                         $out->addHtml( $gallery->toHtml() );
  39                 }
  40         }
  41
  42         /**
  43          * Prepare an image object given a result row
  44          *
  45          * @param object $row Result row
  46          * @return Image
  47          */
  48         private function prepareImage( $row ) {
  49                 $namespace = isset( $row->namespace ) ? $row->namespace : NS_IMAGE;
  50                 $title = Title::makeTitleSafe( $namespace, $row->title );
  51                 return ( $title instanceof Title && $title->getNamespace() == NS_IMAGE )
  52                         ? new Image( $title )
  53                         : null;
  54         }
  55
  56         /**
  57          * Get additional HTML to be shown in a results' cell
  58          *
  59          * @param object $row Result row
  60          * @return string
  61          */
  62         protected function getCellHtml( $row ) {
  63                 return '';
  64         }
  65
  66 }
  67
  68 ?>