CategoryPage.php

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<?php
class CategoryPage extends Article {
    # Subclasses can change this to override the viewer class.
    protected $mCategoryViewerClass = 'CategoryViewer';
 
    protected function newPage( Title $title ) {
        // Overload mPage with a category-specific page
        return new WikiCategoryPage( $title );
    }
 
    public static function newFromID( $id ) {
        $t = Title::newFromID( $id );
        # @todo FIXME: Doesn't inherit right
        return $t == null ? null : new self( $t );
        # return $t == null ? null : new static( $t ); // PHP 5.3
    }
 
    function view() {
        $request = $this->getContext()->getRequest();
        $diff = $request->getVal( 'diff' );
        $diffOnly = $request->getBool( 'diffonly',
            $this->getContext()->getUser()->getOption( 'diffonly' ) );
 
        if ( $diff !== null && $diffOnly ) {
            parent::view();
            return;
        }
 
        if ( !wfRunHooks( 'CategoryPageView', array( &$this ) ) ) {
            return;
        }
 
        $title = $this->getTitle();
        if ( NS_CATEGORY == $title->getNamespace() ) {
            $this->openShowCategory();
        }
 
        parent::view();
 
        if ( NS_CATEGORY == $title->getNamespace() ) {
            $this->closeShowCategory();
        }
    }
 
    function openShowCategory() {
        # For overloading
    }
 
    function closeShowCategory() {
        // Use these as defaults for back compat --catrope
        $request = $this->getContext()->getRequest();
        $oldFrom = $request->getVal( 'from' );
        $oldUntil = $request->getVal( 'until' );
 
        $reqArray = $request->getValues();
 
        $from = $until = array();
        foreach ( array( 'page', 'subcat', 'file' ) as $type ) {
            $from[$type] = $request->getVal( "{$type}from", $oldFrom );
            $until[$type] = $request->getVal( "{$type}until", $oldUntil );
 
            // Do not want old-style from/until propagating in nav links.
            if ( !isset( $reqArray["{$type}from"] ) && isset( $reqArray["from"] ) ) {
                $reqArray["{$type}from"] = $reqArray["from"];
            }
            if ( !isset( $reqArray["{$type}to"] ) && isset( $reqArray["to"] ) ) {
                $reqArray["{$type}to"] = $reqArray["to"];
            }
        }
 
        unset( $reqArray["from"] );
        unset( $reqArray["to"] );
 
        $viewer = new $this->mCategoryViewerClass(
            $this->getContext()->getTitle(),
            $this->getContext(),
            $from,
            $until,
            $reqArray
        );
        $this->getContext()->getOutput()->addHTML( $viewer->getHTML() );
    }
}