Extension:JSpoiler

The JSpoiler extension allows to hide the text between the tags behind a JavaScript spoiler block. Based on the work of Brian Enigma: http://vanishingpointwiki.com/wiki/MediaWiki:Spoiler.

Usage

Syntax

<spoiler [text="string"]>

Examples

<spoiler> some text </spoiler>

<spoiler text="something"> some text </spoiler>

Installation

• Copy the code into a file called "JSpoiler.php" and place the file(s) in a directory called JSpoiler in your extensions/ folder.
• Add the following code at the bottom of your LocalSettings.php :

  require_once "$IP/extensions/JSpoiler/JSpoiler.php";
  $defaultText = "Show text";
  $spoilerCSS = "border: 1px dashed #000; background-color: #eeeef2; padding: 3px;";
  $spoilerHeaderCSS = "font-size: 135%; color: #f00;";
  $spoilerLinkCSS = "background-color: #eeeef2; color: #00f; padding: 2px 4px 2px 4px; border: solid black 1px; text-decoration: underline;";
  

•  Done – Navigate to Special:Version on your wiki to verify that the extension is successfully installed.

Code

JSpoiler.php

<?php
# MediaWiki spoiler extension
# <spoiler> some text </spoiler>
# <spoiler text="something"> some text </spoiler>
# the function registered by the extension hides the text between the
# tags behind a JavaScript spoiler block.
#
# Based on the work of Brian Enigma: http://vanishingpointwiki.com/wiki/MediaWiki:Spoiler
#
# (C) Copyright 2009, ddsx <ddsx@live.it>
# This work is licensed under a Creative Commons Attribution-Noncommercial-Share 
# Alike 2.5 License.  Some rights reserved.
# https://creativecommons.org/licenses/by-nc-sa/2.5/

# Configuration:
$defaultText = "Details anzeigen";
$spoilerCSS = "border: 1px dashed #000000; background-color: #EEEEF2; padding: 3px;";
$spoilerHeaderCSS = "font-size:135%; color:#ff0000;";
$spoilerLinkCSS = "background-color:#EEEEF2; color:#0000FF; padding:2px 4px 2px 4px; border:solid black 1px; text-decoration: underline;";
# End Configuration

$wgExtensionFunctions[] = "wfSpoilerExtension";
$wgHooks['OutputPageBeforeHTML'][] = 'spoilerParserHook' ;
$JSpoilerVersion = '1.2';
$wgExtensionCredits['parserhook'][] = array(
	'name'=>'JSpoiler',
	'version'=>$JSpoilerVersion,
	'author'=>'ddsx, Thomas Candrian',
	'url'=>'https://www.mediawiki.org/wiki/Extension:JSpoiler',
	'description' => htmlentities('Adds a <spoiler [text="string"]> tag')
    );

use MediaWiki\MediaWikiServices;
 
function wfSpoilerExtension() {
    global $wgParser;
    # register the extension with the WikiText parser
    $wgParser->setHook( "spoiler", "renderSpoiler" );
}
 
function wfSpoilerJavaScript() {
        global $spoilerCSS;
        global $spoilerHeaderCSS;
        global $spoilerLinkCSS;
return  "<script language=\"JavaScript\">\n" .
        "\n" . 
        "function getStyleObject(objectId) {\n" .
        "    // checkW3C DOM, then MSIE 4, then NN 4.\n" .
        "    //\n" .
        "    if(document.getElementById) {\n" .
        "      if (document.getElementById(objectId)) {\n" .
        "	     return document.getElementById(objectId).style;\n" .
        "      }\n" . 
        "    } else if (document.all) {\n" .
        "      if (document.all(objectId)) {\n" .
        "	     return document.all(objectId).style;\n" .
        "      }\n" . 
        "    } else if (document.layers) { \n" . 
        "      if (document.layers[objectId]) { \n" .
        "	     return document.layers[objectId];\n" .
        "      }\n" . 
        "    } else {\n" .
        "	   return false;\n" .
        "    }\n" .
        "}\n" .
        "\n" .
        "function toggleObjectVisibility(objectId) {\n" .
        "    // first get the object's stylesheet\n" .
        "    var styleObject = getStyleObject(objectId);\n" .
        "\n" .
        "    // then if we find a stylesheet, set its visibility\n" .
        "    // as requested\n" .
        "    //\n" .
        "    if (styleObject) {\n" .
        "        if (styleObject.display == 'none') {\n" .
        "            styleObject.display = 'block';\n" .
        "        } else {\n" .
        "            styleObject.display = 'none';\n" .
        "        }\n" .
        "        return true;\n" .
        "    } else {\n" .
        "        return false;\n" .
        "    }\n" .
        "}\n" .
        "</script>\n" .
        "<style type=\"text/css\"><!--\n" .
        "div.spoiler {" . $spoilerCSS . "}\n" .
        "span.spoilerHeader {" . $spoilerHeaderCSS . "}\n" . 
        "a.spoilerLink {" . $spoilerLinkCSS . "}\n" . 
        "--></style>\n";
}
 
function spoilerParserHook( &$parser , &$text ) { 
    $text = wfSpoilerJavaScript() . $text;
    return true;
}
 
function wfMakeSpoilerId() {
    $result = "";
    for ($i=0; $i<20; $i++)
        $result .= chr(rand(ord('A'), ord('Z')));
    return $result;
}
 
# The callback function for converting the input text to HTML output
function renderSpoiler( $input, $argv, $parser ) {
    global $defaultText;
    $localParser = MediaWikiServices::getInstance()->getParserFactory()->create();
    $outputObj = $localParser->parse($input, $parser->mTitle, $parser->mOptions);
    $spoilerId = wfMakeSpoilerId();
    $output  = "<a href=\"#\"onclick=\"toggleObjectVisibility('" . $spoilerId . "'); return false;\" class=\"spoilerLink\">";
    if (!isset($argv['text']) or $argv["text"] == "") {
			$output .= $defaultText . "</a>\n";
		} else {
			$output .= $argv["text"] . "</a>\n";
		}
    $output .= "<div id=\"" . $spoilerId . "\" class=\"spoiler\" style=\"display: none;\">\n";
    $output .= $outputObj->getText() . "\n";
    $output .= "</div>\n";
    return $output;
}