Extension:DisplayFilter.php

<?php

1. Extension:Display Filter

These are the MediaWiki extensions we're using and/or developing. Please refer to the information on the mediawiki.org wiki for installation and usage details. Extensions here which have no corresponding mediawiki article are either not ready for use or have been superseded. You can also browse our extension code in our local Subversion repository or our GitHub mirror.

1. - Licenced under LGPL (http://www.gnu.org/copyleft/lesser.html)
2. - Author: User:NadCategory:Extensions created with Template:Extension

if (!defined('MEDIAWIKI')) die('Not an entry point.');

define('DISPLAYFILTER_VERSION','0.0.2, 2007-05-15');

$wgDisplayFilterMagic = "filter"; $wgExtensionFunctions[] = 'wfSetupDisplayFilter'; $wgHooks['LanguageGetMagic'][] = 'wfDisplayFilterLanguageGetMagic';

$wgExtensionCredits['parserhook'][] = array( 'name' => 'Display Filter', 'author' => 'User:Nad', 'description' => 'Create links which control visibility of areas by CSS class', 'url' => 'http://www.mediawiki.org/wiki/Extension:Display_Filter', 'version' => DISPLAYFILTER_VERSION );

1. Keep track of JavaScript added to page to avoid doubleups

if (!isset($wgJS)) $wgJS = array();

class DisplayFilter {

# Constructor function DisplayFilter() { global $wgParser,$wgDisplayFilterMagic; $wgParser->setFunctionHook($wgDisplayFilterMagic,array($this,'filter')); }

# Expand the filter-magic function filter(&$parser) { $this->addJS(); $argv = array(); foreach (func_get_args() as $arg) if (!is_object($arg)) { $arg = ereg_replace('[\\\\\'"]',,$arg); if (preg_match('/^(.+?)\\s*=\\s*(.+)$/',$arg,$match)) $argv[$match[1]] = $match[2]; else $argv[] = $arg; } $anchor = array_shift($argv); $atts = array(); $atts['href'] = "javascript:filter(['".join("','",$argv)."'])"; $link = '<a'; foreach ($atts as $k => $v) $link .= " $k=\"$v\""; $link .= ">$anchor</a>"; return array($link,'noparse' => true, 'isHTML' => true); }

# Add the javascript to the output object if not added yet and there is at least one tree function addJS() { global $wgOut,$wgJS,$wgJsMimeType; if (isset($wgJS['DisplayFilter'])) return; $wgJS['DisplayFilter'] = true; $wgOut->addScript('<script type="'.$wgJsMimeType.'"> function filter(args) { if (args.length == 1) { } else { } } </script>'); }

# Needed in some versions to prevent Special:Version from breaking function __toString() { return 'Display Filter'; }

	}

1. Called from $wgExtensionFunctions array when initialising extensions

function wfSetupDisplayFilter() { global $wgDisplayFilter; $wgDisplayFilter = new DisplayFilter(); $wgDisplayFilter->addJS(); # addScript doesn't seem to work from within parser }

1. Needed in MediaWiki >1.8.0 for magic word hooks to work properly

function wfDisplayFilterLanguageGetMagic(&$magicWords,$langCode = 0) { global $wgDisplayFilterMagic; $magicWords[$wgDisplayFilterMagic] = array(0,$wgDisplayFilterMagic); return true; } ?>