Difference between revisions of "Extension:Workflow.php"

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<?php
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{{svn|extensions|Workflow/Workflow.php}}
# Extension:Workflow{{Category:Extensions|Workflow}}{{Category:Code that uses voodoo|Workflow}}{{php}}
 
# - Licenced under LGPL (http://www.gnu.org/copyleft/lesser.html)
 
# - Author: [http://www.organicdesign.co.nz/nad User:Nad]{{Category:Extensions created with Template:Extension}}
 
# - Started: 2007-10-06
 
 
 
if (!defined('MEDIAWIKI')) die('Not an entry point.');
 
 
 
define('WORKFLOW_VERSION','0.0.2, 2007-10-24');
 
 
 
$wgWorkflowMagic = "workflow";
 
 
 
$wgExtensionCredits['parserhook'][] = array(
 
'name'        => 'Workflow',
 
'author'      => '[http://www.organicdesign.co.nz/nad User:Nad]',
 
'description' => 'Adds the ability for articles to be part of workflow sequences and easily moved dynamically between phases in the sequence using AJAX.',
 
'url'        => 'http://www.mediawiki.org/wiki/Extension:Workflow',
 
'version'    => WORKFLOW_VERSION
 
);
 
 
 
class Workflow {
 
 
 
var $magic;
 
var $state;
 
var $name;
 
var $pagename;
 
var $update;
 
 
 
# Constructor
 
function Workflow() {
 
global $wgHooks,$wgExtensionFunctions,$wgWorkflowMagic;
 
$wgExtensionFunctions[] = array($this,'init');
 
$wgHooks['LanguageGetMagic'][] = array($this,'languageGetMagic');
 
$this->bypassAjaxDispatcher();
 
$this->magic = $wgWorkflowMagic;
 
$this->pagename = $_REQUEST['title'];
 
}
 
 
 
# Called from $wgExtensionFunctions array when initialising extensions
 
function init() {
 
global $wgParser,$wgWorkflowMagic,$wgWorkflowUpdateState;
 
$wgParser->setFunctionHook($wgWorkflowMagic,array($this,'expandMagic'));
 
if ($this->update) $this->updateState();
 
}
 
 
 
# Expand the #tags to reveal the current state and hide the others and add javascript
 
# - note the hidden states mustn't be rendered because they contain categorisation links which shouldn't be processed
 
function expandMagic() {
 
 
 
# Extend catlinks information to include workflows
 
$this->extendCatlinks();
 
 
 
# Populate $argv with both named and numeric parameters
 
$argv  = array();
 
$items = array();
 
foreach (func_get_args() as $arg) if (!is_object($arg)) {
 
if (preg_match('/^(.+?)\\s*=\\s*(.+)$/',$arg,$match)) $argv[$match[1]] = $match[2]; else $argv[] = $arg;
 
}
 
 
 
# Render the visible item
 
# - could also render all non-visible items here too, but with a cloned parser object so that the categorisation doesn't occur
 
# - that way the JS can instantly cycle through all rendered states, then set new state and get updated catlinks via ajax
 
$text = 'done';
 
foreach ($argv as $k => $v) {
 
if ($format == 'tag') {
 
$text = "<div class='$class' id='$id'>\n$text</div>";
 
}
 
elseif ($format == 'list') {
 
$text .= "<div class='$class item' id='$k'>$v</div>\n";
 
$text = "<div class='$class' id='$id'>\n$text</div>";
 
}
 
}
 
 
 
return $text;
 
}
 
 
 
# Update a tag state in an article
 
function updateState() {
 
$title = Title::newFromtext($this->pagename);
 
if (is_object($title) && $title->exists()) {
 
$article = new Article($title);
 
$text = $article->getContent();
 
preg_replace_callback("/\\{\\{#{$this->magic}:.*?id\\s*=\\s*['\"]?$id\\W.*?\\}\\}/s",array($this,'updateStateCallback'),$text,1,$count);
 
if ($count) $article->updateArticle($text,"summary",false,false);
 
}
 
}
 
 
 
# Replacement callback for updating tag state
 
function updateStateCallback($m) {
 
$m[0] = preg_replace("/(state\\s*=\\s*['\"]?)\\w+/","$1{$this->state}",$m[0],1,$count);
 
if ($count < 1) $m[0] = preg_replace("/(\\{\\{#{$this->magic}:/","$0state=${$this->state}|",$m[0]);
 
return $m[0];
 
}
 
 
 
# Extend catlinks information to include workflows
 
function extendCatlinks() {
 
static $done = 0;
 
if ($done++) return;
 
global $wgUser;
 
$skin = $wgUser->getSkin();
 
 
 
# Create a new Skin class (WorkflowSkin) by extending the existing one with overridden getCategoryLinks method
 
$class = get_class($skin);
 
eval("class WorkflowSkin extends {$class} ".'{
 
function getCategoryLinks() {
 
$catlinks = parent::getCategoryLinks();
 
$catlinks .= "<br>foo";
 
return $catlinks;
 
}
 
}');
 
 
 
# Replace user's skin with a WorkflowSkin replica
 
$wgUser->mSkin = new WorkflowSkin();
 
foreach (array_keys(get_class_vars($class)) as $k) $wgUser->mSkin->$k = $skin->$k;
 
}
 
 
 
# Return just the catlinks to the client after updating a tag state
 
function returnCatlinks() {
 
global $wgUser,$wgOut;
 
$skin = $wgUser->getSkin();
 
$catlinks = is_object($skin) ? $skin->getCategoryLinks() : 'Error: no skin!';
 
$wgOut->disable();
 
while(@ob_end_clean());
 
if (in_array('Content-Encoding: gzip',headers_list())) $catlinks = gzencode($catlinks);
 
echo($catlinks);
 
return false;
 
}
 
 
 
# If it's a workflow-related ajax call, don't use dispatcher (because we need the catlinks generated by normal page render)
 
function bypassAjaxDispatcher() {
 
global $wgUseAjax,$wgHooks;
 
if ($wgUseAjax && $_REQUEST['action'] == 'ajax' && $_REQUEST['rs'] == $this->magic && is_array($_REQUEST['rsargs'])) {
 
list($_REQUEST['title'],$this->name,$this->state) = $_REQUEST['rsargs'];
 
$wgHooks['OutputPageBeforeHTML'][] = array($this,'returnCatlinks');
 
$this->update = true;
 
$_REQUEST['action'] = 'render';
 
}
 
else $this->update = false;
 
}
 
 
 
# Needed in some versions to prevent Special:Version from breaking
 
function __toString() { return 'Workflow'; }
 
 
 
# Set up the magic words
 
function languageGetMagic(&$magicWords,$langCode = 0) {
 
$magicWords[$this->magic] = array(0,$this->magic);
 
return true;
 
}
 
 
}
 
 
 
$wgWorkflow = new Workflow();
 
?>
 

Latest revision as of 23:25, 3 August 2010

Info.svg This code is in our Git repository here.

Note: If there is no information in this page about this code and it's a MediaWiki extension, there may be something at mediawiki.org.