Extension:Treeview3.php

<?php

1. MediaWiki Treeview Extension
2. - See http://www.mediawiki.org/wiki/Extension:Tree_view for installation and usage details
3. - Licenced under LGPL (http://www.gnu.org/copyleft/lesser.html)
4. - Author: http://www.organicdesign.co.nz/nad

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

define('TREEVIEW_VERSION','3.6.0, 2007-08-30');

if (!is_array($wgTreeViewImages)) $wgTreeViewImages = array( 'plus' => "$wgUploadPath/7/72/Plus.gif", 'minus' => "$wgUploadPath/a/a0/Minus.gif", 'opened' => "$wgUploadPath/4/46/Folder_opn_sml_yel.gif", 'closed' => "$wgUploadPath/6/6e/Folder_sml_yel.gif", 'doc' => "$wgUploadPath/e/e3/Doc-icon.gif", 'spacer' => "$wgUploadPath/c/c0/Blank.gif" );

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

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

$wgTreeViewMagic = "tree"; # the parser-function name for trees $wgExtensionFunctions[] = 'wfSetupTreeView'; $wgHooks['LanguageGetMagic'][] = 'wfTreeViewLanguageGetMagic';

$wgExtensionCredits['parserhook'][] = array( 'name' => 'Treeview', 'author' => 'User:Nad', 'url' => 'http://www.mediawiki.org/wiki/Extension:Treeview', 'description' => 'Allows dynamic tree-views to be made with bullet-list syntax', 'version' => TREEVIEW_VERSION );

class TreeView {

var $version = TREEVIEW_VERSION; var $token = '@@@'; var $id = 1; var $js = 0; var $info; var $args;

# Constructor function TreeView($magic) { global $wgParser,$wgHooks; $this->info = array(); $this->args = array(); $wgParser->setFunctionHook($magic,array($this,'Tree')); $wgParser->setHook('TreeViewRowStart',array($this,'RowStart')); $wgParser->setHook('TreeViewRowEnd',array($this,'RowEnd')); }

# Restructure recursive trees to single root trees surrounded by $magic tags function Tree(&$parser) { $args = array(); foreach (func_get_args() as $arg) if (!is_object($arg)) { if (preg_match('/^(.+?)=(.+)$/',$arg,$match)) $args[$match[1]] = $match[2]; else $args[] = $arg; } $text = $args[0]; $tree = ; $token = $this->token; $ver = $this->version; $id = uniqid(); if (count($parser->mTemplatePath)) $tree = "*O$token\n$text\n*C$token"; elseif (preg_match_all("/^(\\*+)(.$token)? *(.*?) *$/m",$text,$match)) { $this->args[$id] = $args; $this->info[$id] = array(); $nest = array(); $ld = ; $row = -1; foreach ($match[1] as $i => $indent) { if ($sub = $match[2][$i]) $sub == "O$token" ? $nest[] = substr($ld,0,-1) : array_pop($nest); elseif ($item = $match[3][$i]) { $this->info[$id][++$row] = strlen($indent.join(,$nest))-1; $tree .= "<TreeViewRowStart>$id,$row</TreeViewRowStart>$item<TreeViewRowEnd/>\n"; } $ld = $indent; }

$tree = "

\n$tree

";

} return $tree; }

# Convert each row into HTML function RowStart($text,$argv,&$parser) { global $wgTreeViewImages; list($id,$row) = split(',',$text);

$args = $this->args[$id]; $info = $this->info[$id]; $depth = $info[$row]; $next = isset($info[$row+1])  ? $info[$row+1] : 0; $plus = isset($args['plus'])  ? $args['plus']  : $wgTreeViewImages['plus']; $minus = isset($args['minus'])  ? $args['minus']  : $wgTreeViewImages['minus']; $opened = isset($args['opened'])  ? $args['opened']  : $wgTreeViewImages['opened']; $closed = isset($args['closed'])  ? $args['closed']  : $wgTreeViewImages['closed']; $spacer = isset($args['spacer'])  ? $args['spacer']  : $wgTreeViewImages['spacer']; $doc = isset($args['doc'])  ? $args['doc']  : $wgTreeViewImages['doc']; $default = isset($args['openlevels']) ? $args['openlevels'] : 0;

$show = $depth > $default ? ' style="display:none"' : ; if ($depth >= $default) { $open = $plus; $icon = $closed; } else { $open = $minus; $icon = $opened; } if ($depth >= $next) { $open = ; $icon = $doc; } else $open = "<a href='javascript:toggleTreeviewItem(\"$id\",$row)'><img id='tvi$id$row' src='$open'/></a>";

return "<tr$show class='tree-row' depth='$depth' id='tvr$id$row'>"

. "<img src='$spacer' width='".($depth*16)."' height='1'/>$open"

. " <img id='tvf$id$row' src='$icon'/> "; }

function RowEnd($text,$argv,&$parser) {

return "\n"; } # Add the javascript to the output object if not added yet and there is at least one tree function addJS() { global $wgOut,$wgTreeViewImages,$wgJS,$wgJsMimeType; if (isset($wgJS['TreeView'])) return; $wgJS['TreeView'] = true; $plus = $wgTreeViewImages['plus']; $minus = $wgTreeViewImages['minus']; $opened = $wgTreeViewImages['opened']; $closed = $wgTreeViewImages['closed']; $spacer = $wgTreeViewImages['spacer']; $doc = $wgTreeViewImages['doc']; $wgOut->addScript('<script type="'.$wgJsMimeType.'"> function toggleTreeviewItem(id,row) { var plus = "'.$plus.'"; var minus = "'.$minus.'"; var opened = "'.$opened.'"; var closed = "'.$closed.'"; var doc = "'.$doc.'"; var item = document.getElementById("tvr"+id+row); var next = document.getElementById("tvr"+id+(row+1)); var depth = 0+item.getAttribute("depth"); var close = next.style.display != "none"; var img = document.getElementById("tvi"+id+row); var fld = document.getElementById("tvf"+id+row); fld.setAttribute("src",close ? closed : opened); img.setAttribute("src",close ? plus : minus); while ((item = document.getElementById("tvr"+id+(++row))) && (0+item.getAttribute("depth") > depth)) { if (close) item.style.display = "none"; else if (depth == item.getAttribute("depth")-1) { item.style.display = ""; if (img = document.getElementById("tvi"+id+row)) img.setAttribute("src",plus); if (fld = document.getElementById("tvf"+id+row)) if (fld.getAttribute("src") == opened) fld.setAttribute("src",closed); } } }</script>'); } }

1. Called from $wgExtensionFunctions array when initialising extensions

function wfSetupTreeView() { global $wgTreeView,$wgTreeViewMagic,$wgVersion; $wgTreeView = new TreeView($wgTreeViewMagic); $wgTreeView->addJS(); # Make code unconditional for now due to parser caching }

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

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