Extension:ListView.php

From OrganicDesign Wiki

<?php
# Extension:ListView
# - Licenced under LGPL (http://www.gnu.org/copyleft/lesser.html)
# - Author: [http://www.organicdesign.co.nz/nad User:Nad]
# - Started: 2008-04-16
 
if (!defined('MEDIAWIKI')) die('Not an entry point.');
 
define('LISTVIEW_VERSION','0.0.0, 2008-04-16');
 
$egListViewAction     = 'list';
$egRecordTemplatesCat = 'Record_templates'; # DBkey of category that valid record templates are members of
 
$wgExtensionFunctions[]        = 'efSetupListView';
$wgExtensionCredits['other'][] = array(
	'name'        => 'ListView',
	'author'      => '[http://www.organicdesign.co.nz/nad User:Nad]',
	'description' => 'Allows categories or articles containing lists of article links to be rendered as a sortable list',
	'url'         => 'http://www.organicdesign.co.nz/Extension:ListView.php',
	'version'     => LISTVIEW_VERSION
	);
 
function efSetupListView() {
	global $wgHooks,$wgOut,$wgUser;
	$wgHooks['SkinTemplateTabs'][] = 'efListViewUpdateActions';
	$wgHooks['UnknownAction'][]    = 'efListViewUnknownAction';
}
 
function efListViewUpdateActions(&$skin,&$actions) {
	global $wgTitle,$wgRequest,$egListViewAction;
	$selected = $wgRequest->getText('action') == $egListViewAction ? 'selected' : false;
	$url      = $wgTitle->getLocalURL("action=$egListViewAction");
	if (is_object($wgTitle)) {
		$actions[$egListViewAction] = array(
			'text'  => 'list', # todo: should use wfMsg($egListViewAction)
			'class' => $selected,
			'href'  => $url
		);
	}
	return true;
}
 
function efListViewUnknownAction($action,&$article) {
	global $wgOut,$wgUser,$wgTitle,$wgParser,$wgRequest,$egRecordTemplatesCat,$egListViewAction;
	if ($action != $egListViewAction) return true;
 
	# Get the list of titles
	if ($wgRequest->getText('template')) {
 
		# Template was specified, list comes from template and query if specified
		# - also other parameters incl. query=DPL|SMW
 
	}
	else {
 
		# Read the valid links into $links array	
		$title = $article->getTitle();
		if ($title->getNamespace() == NS_CATEGORY) {
			$links = array();
			$dbr   = &wfGetDB(DB_SLAVE);
			$cl    = $dbr->tableName('categorylinks');
			$to    = $title->getDbKey();
			$res   = $dbr->select($cl,'cl_from',"cl_to = '$to'",__METHOD__,array('ORDER BY' => 'cl_sortkey'));
			while ($row = $dbr->fetchRow($res)) {
				$t = Title::newFromID($row[0]);
				$u = $t->getLocalURL();
				$t = $t->getPrefixedText();
				$links[] = array(1 => "<a title=\"$t\" href=\"$u\">$t</a>");
			}
		}
		else {
			if (is_object($wgParser)) { $psr = $wgParser; $opt = $wgParser->mOptions; }
			else { $psr = new Parser; $opt = NULL; }
			if (!is_object($opt)) $opt = ParserOptions::newFromUser($wgUser);
			$html = $psr->parse($article->fetchContent(),$title,$opt,true,true)->getText();
			preg_match_all("|<li>\\s*(<a[^>]+title=[\"'](.*?)[\"'][^>]*>(.+?)</a>)|s",$html,$links,PREG_SET_ORDER);
		}
	}
 
	# Render a generic selection form (a dropdown of all the record types found in Category:Record templates)
	# - later add generic query form
	$select = '<option selected>Select record type</option>';
	$dbr    = &wfGetDB(DB_SLAVE);
	$cl     = $dbr->tableName('categorylinks');
	$res    = $dbr->select($cl,'cl_from',"cl_to = '$egRecordTemplatesCat'",__METHOD__,array('ORDER BY' => 'cl_sortkey'));
	while ($row = $dbr->fetchRow($res)) $select .= '<option>'.(Title::newFromID($row[0])->getText()).'</option>';
	$select = "<select name=\"template\">\n$select\n</select>";
	$wgOut->addHtml($select);
 
	# Pager
	# - todo: add pager links accounting for limit and offset
	$pager = '....';
 
	# PreProcess the list
	# - get common templates
	# - calculate totals
 
	# Get meta information (if any) from templates
	# - could be useful to allow record templates to contain parameters for list-view
 
	# Render the list
	# - todo: add limit and offset
	$wgOut->setPageTitle($title);
	$wgOut->addHtml($pager);
	$wgOut->addHtml("<table>\n");
	$class = 'even';
	foreach ($links as $link) {
		$class = $class == 'even' ? 'odd' : 'even';
		$wgOut->addHtml("<tr class=\"$class\">");
		$wgOut->addHtml("<td><input type=\"checkbox\" /></td>");
		$wgOut->addHtml("<td>$link[1]</td>");
		$wgOut->addHtml("</tr>\n");
	}
	$wgOut->addHtml($totals);
	$wgOut->addHtml("</table>\n");
	$wgOut->addHtml($pager);
	return false;
}