joomla plugin

<?php
/**
* @version		$Id: usratevote.php 12228 2009-06-21 02:01:44Z ian $
* @package		Joomla
* @copyright	Copyright (C) 2009 - 2010 uniquescience. All rights reserved.
* @license		GNU/GPL, see LICENSE.php
* Joomla! is free software. This version may have been modified pursuant
* to the GNU General Public License, and as distributed it includes or
* is derivative of works licensed under the GNU General Public License or
* other free or open source software licenses.
* See COPYRIGHT.php for copyright notices and details.
*/

// no direct access
defined( '_JEXEC' ) or die( 'Restricted access' );

//global $mainframe;
//$mainframe->registerEvent( 'onAfterDisplayTitle', 'plgContentusratevote' );
//$mainframe->registerEvent( 'onPrepareContent', 'plgContentusratevote' );

/**
* Tech Rating plugin
* <b>Usage:</b>
* <span class="system-usrate">{uniquescience-ratevote:rateVal}</span>
*/

class plgContentUsratevote extends JPlugin
{
	/**
	 * Constructor
	 *
	 * @access      protected
	 * @param       object  $subject The object to observe
	 * @param       array   $config  An array that holds the plugin configuration
	 * @since       1.5
	 */
	public function __construct(& $subject, $config)
	{
		parent::__construct($subject, $config);
		$this->loadLanguage();
	}

	function onContentBeforeDisplay($context, &$row, &$params, $page=0 )
	{
		global $document, $path;
		// expression to search for
		$regex = "#<span([^>]*?)class=(\"|')system-usrate(\"|\')([^>]*?)>.*?</span>#iU";

	// Get Plugin info
	//$plugin			=& JPluginHelper::getPlugin('content', 'usratevote');
	//$pluginParams	= new JParameter( $plugin->params );
	$frontpageflag = trim($this->params->get('frontpageflag'));
	$ussitename = trim($this->params->get('ussitename'));
	$usratelink = trim($this->params->get('usratelink'));
	$innovaPermission = trim($this->params->get('usratevote')); // title
	$textcolor = trim($this->params->get('textcolor'));
	$bordercolor = trim($this->params->get('bordercolor'));
	$bgcolor = trim($this->params->get('bgcolor'));
	$usvotingcount = trim($this->params->get('usvotingcount'));
	$votetitle = trim($this->params->get('votetitle'));
	$allflag = trim($this->params->get('allflag'));
	$defaultrate = trim($this->params->get('defaultrate'));

	$textcolor = ($textcolor!="")?$textcolor:"#666666";
	$bordercolor = ($bordercolor!="")?$bordercolor:"#ccc";
	$bgcolor = ($bgcolor!="")?$bgcolor:"#ffffff";
	//JPlugin::loadLanguage( 'plg_content_usratevote' );

	//simple performance check to determine whether bot should process further
  if ( preg_match( "!class=(\"|')system-usrate!", $row->text ) === false ) {
		return true;
	}
	$db		=& JFactory::getDBO();
	$view  = JRequest::getCmd('view');

	if(!$page) {
		$page = 0;
	}
	$userLoginObj =& JFactory::getUser();
	$allow_vote_permission = false;
	if($innovaPermission == 'allow_all'){
		$allow_vote_permission = true;
	} elseif($innovaPermission == 'disallow_all') {
		$allow_vote_permission = false;
	} else {
		$innovagroupArray = array('Registered', 'Author', 'Editor', 'Publisher', 'Manager', 'Administrator', 'Super Administrator');
		$db_key = array_search($innovaPermission, $innovagroupArray);
		$sess_key = array_search(trim($userLoginObj->usertype), $innovagroupArray);
		if($db_key <= $sess_key) {
			$allow_vote_permission = true;
		}
	}
	// check whether plugin has been unpublished
	//if (!JPluginHelper::isEnabled('content', 'usratevote') || $params->get( 'intro_only' )|| $params->get( 'popup' ) || $view != 'article') {
	if (!JPluginHelper::isEnabled('content', 'usratevote') || ($frontpageflag=="no" && $view == "frontpage") ) {
		$row->text = preg_replace( $regex, '', $row->text );
		return;
	}
	$patternExtractVal = "#<span([^>]*?)class=(\"|')system-usrate(\"|')([^>]*?)>.*?:(.*?)\}</span>#iU";
	if(preg_match($patternExtractVal, $row->text, $matches)) {
		$ratingVal = $matches[5];
		$replaceStatus = true;
	} else {
		$ratingVal = $defaultrate;
		$replaceStatus = false;
	}
	$id = $row->id;

	$query = 'SELECT rating_sum, rating_count' .
			' FROM #__content_rating' .
			' WHERE content_id='.$id;
	$rating_sum = $ratingVal;
	$rating_count = 1;
	$db->setQuery($query);
	$result = $db->loadRowList();
	if(isset($result[0])) {
		$rating_row = $result[0];
		$rating_sum += (isset($rating_row[0]))?$rating_row[0]:0;
		$rating_count += (isset($rating_row[1]))?$rating_row[1]:0;
	}
	if($rating_count>0) {
		$ratingVal = round((($rating_sum/$rating_count)), 1);
	} else {
		$ratingVal = 0;
	}

	$linkratingText = (trim($usratelink) != "")?'<a href="'.$usratelink.'" class="usratevote">'.$ratingVal.'</a>':'<span class="usratevote_rt">'.$ratingVal.'</span>';

	$voteDivWidth = ($usvotingcount == 5)?"310px":"480px";
	$html = '';
	$html .= '
	<style>
		table.usratevote { margin: 5px 5px 0px 5px; border: 1px solid '.$bordercolor.'; width: 85px; text-align: center; color: '.$textcolor.'; position: relative;float:right;clear:left; background-color:'.$bgcolor.';}
		table.usratevote td { padding: 2px 5px 2px 5px; background-color:'.$bgcolor.'; }
		td.usratevote_td { border-bottom: 1px solid '.$bordercolor.'; color: '.$textcolor.'; background-color:'.$bgcolor.'; }
		div.usratevote { font-size: 10px; text-align: center; font-weight: normal; padding: 1px 0px 1px 0px; background-color:'.$bgcolor.'; }
		a.usratevote { font-size: 28px; font-weight: bold; color: '.$textcolor.'; }
		.usratevote_rt { font-size: 28px; font-weight: bold; color: '.$textcolor.'; }
		a.usratevote_sm { font-size: 12px; font-weight: normal; color: '.$textcolor.'; }
		.usratevote_vote { display: none; border: 1px solid '.$bordercolor.'; margin: 0px 5px 5px 5px; padding: 5px 5px 5px 5px; width:'.$voteDivWidth.'; background-color:'.$bgcolor.'; }
		.usratevote_form { margin: 0px; }
	</style>
	<script>
	function show_usratevote_vote_'.$id.'() {
		if(document.getElementById("usratevote_vote_'.$id.'")) {
			document.getElementById("usratevote_vote_'.$id.'").style.display = "block";
		}
	}
	function hideRate_'.$id.'(){
		if(document.getElementById("usratevote_vote_'.$id.'")) {
			document.getElementById("usratevote_vote_'.$id.'").style.display = "none";
		}
	}
	</script>
	<div id="mainContainer">
		<div>
			<table cellpadding="0" cellspacing="0" class="usratevote">
				<tr><td align="center" class="usratevote_td"><b>'.$ussitename.'</b></td></tr>
				<tr><td><span align="center" class="usratevote">'.$usratevote_title.'</span></td></tr>
				<tr><td><span align="center" class="usratevote">'.$linkratingText.'</span></td></tr>
	';
	if($allow_vote_permission) {
		$uri =  JFactory::getURI();
		$html .= '
				<tr><td>
					<div style="position:relative;">
						<div align="center" class="usratevote">
							<a href="javascript:void(0);" style="margin-left:12px;" onclick="return show_usratevote_vote_'.$id.'();" class="usratevote_sm">'.$votetitle.'</a>
						</div>
						<div id="subContainer" style="position:absolute; top:21px; right:-10px;">
							<form class="usratevote_form" id="frmRatevote" name="frmRatevote" method="post" action="'.$uri->toString().'">
								<div class="usratevote_vote" id="usratevote_vote_'.$id.'">
									<div><div style="position:absolute; right:10px; z-index:1000; top:2px;"><a href="javascript:void(0);" onClick="hideRate_'.$id.'();" class="usratevote_sm">Close</a></div></div>
							';
							$headText = "<tr><td>&nbsp;</td>";
							$optionText = "<tr><td>".JText::_( 'Poor' )."</td>";
							if(isset($usvotingcount) && $usvotingcount>0) {
								for($i=1;$i<=$usvotingcount;$i++) {
									$headText .= "<td align='center'>".$i."</td>";
									$optionText .= "<td align='center'>".'<input type="radio" alt="vote '.$i.' star" name="user_rating" value="'.$i.'" />'."</td>";
								}
							}
							$headText .= "<td>&nbsp;</td><td>&nbsp;</td></tr>";
							$optionText .= "<td>".JText::_( 'Best' )."</td><td><input type='submit' name='submit_vote' value='". JText::_('Rate')."' /></td></tr>";
							$html .= '<table cellpadding="2px" border="0">'.$headText.$optionText.'</table>';
							$html .= '<input type="hidden" name="task" value="article.vote" />';
							$html .= '<input type="hidden" name="view" value="article" />';
							$html .= '<input type="hidden" name="option" value="com_content" />';
							$html .= '<input type="hidden" name="cid" value="'. $id .'" />';
							$html .= '<input type="hidden" name="id" value="'. $id .'" />';
							$html .= '<input type="hidden" name="url" value="'.  $uri->toString( ) .'" />';
							$html .= JHtml::_('form.token');
							$html .= '
								</div>
							</form>
						</div>
					</div>
				</td></tr>';
	}
	$html .= '
			</table>
		</div>
	</div>

	';


	// look for images in template if available
	$starImageOn 	= JHTML::_('image.site',  'rating_star.png', '/images/M_images/' );
	$starImageOff 	= JHTML::_('image.site',  'rating_star_blank.png', '/images/M_images/' );

	// find all instances of plugin and put in $matches
	$matches = array();
	if($replaceStatus) {
		$row->text = preg_replace( $regex, $html, $row->text, 1);
	} elseif($allflag == "yes") {
		$row->text = preg_replace( $regex, "", $row->text, 1);
		$row->text = $html.$row->text;
	}

	return $html;
}
}