editor_tab_functions.inc.php

/home/editor/editor_tab_functions.inc.php

https://github.com/supungs/AContent
PHP | 845 lines | 365 code | 97 blank | 383 comment | 119 complexity | 5d04e7e48aa385294ef65f138ed2eea6 MD5 | raw file
Possible License(s): LGPL-2.0, LGPL-2.1, MPL-2.0-no-copyleft-exception, MIT, AGPL-1.0

<?php
/************************************************************************/
/* AContent                                                             */
/************************************************************************/
/* Copyright (c) 2013                                                   */
/* Inclusive Design Institute                                           */
/*                                                                      */
/* This program is free software. You can redistribute it and/or        */
/* modify it under the terms of the GNU General Public License          */
/* as published by the Free Software Foundation.                        */
/************************************************************************/

if (!defined('TR_INCLUDE_PATH')) { exit; }

function in_array_cin($strItem, $arItems)
{
   foreach ($arItems as $key => $strValue)
   {
       if (strtoupper($strItem) == strtoupper($strValue))
       {
		   return $key;
       }
   }
   return false;
} 


function get_tabs() {
	//these are the _AT(x) variable names and their include file
	/* tabs[tab_id] = array(tab_name, file_name,                accesskey) */

/* Check if the page template_layout and are enabled or disabled */
        include_once(TR_INCLUDE_PATH.'classes/DAO/DAO.class.php');
        $dao = new DAO();
        
        $inc=0; 
        $tabs[$inc] = array('content',       		'edit.inc.php',          'n');
        
        $sql="SELECT value FROM ".TABLE_PREFIX."config WHERE name='enable_template_layout'";
        $result=$dao->execute($sql);
        if(is_array($result))
        {
            foreach ($result as $support) {
                if($support['value']==TR_STATUS_ENABLED)
                    $tabs[++$inc] = array('layout', 'layout.inc.php', 'l');
            }  
        }
        $sql="SELECT value FROM ".TABLE_PREFIX."config WHERE name='enable_template_page'";
        $result=$dao->execute($sql);
        if(is_array($result))
        {
            foreach ($result as $support) {
                if($support['value']==TR_STATUS_ENABLED)
                    $tabs[++$inc] = array('page_template', 'page_template.inc.php', 'g');
            }  
        }

	$tabs[++$inc] = array('metadata',    		'properties.inc.php',    'p');
	$tabs[++$inc] = array('alternative_content', 'alternatives.inc.php',  'a');	
	$tabs[++$inc] = array('tests',               'tests.inc.php',         't');

   /* DEFAULT IS TO PROF
	$tabs[0] = array('content',       		'edit.inc.php',          'n');
        $tabs[1] = array('layout', 'layout.inc.php', 'l');
        $tabs[2] = array('page_template', 'page_template.inc.php', 'g');
	$tabs[3] = array('metadata',    		'properties.inc.php',    'p');
	$tabs[4] = array('alternative_content', 'alternatives.inc.php',  'a');	
	$tabs[5] = array('tests',               'tests.inc.php',         't');
	//catia
	//$tabs[4] = array('forums', '');
    * 
    * END DEFAULT
    */

	return $tabs;
}


function output_tabs($current_tab, $changes) {
	global $_base_path;
	$tabs = get_tabs();
	$num_tabs = count($tabs);
?>
	<table class="etabbed-table" border="0" cellpadding="0" cellspacing="0" width="95%">
	<tr>		
		<?php 
		for ($i=0; $i < $num_tabs; $i++): 
			if ($current_tab == $i):?>
				<td class="editor_tab_selected">
					<?php if ($changes[$i]): ?>
						<img src="<?php echo $_base_path; ?>images/changes_bullet.gif" alt="<?php echo _AT('usaved_changes_made'); ?>" height="12" width="15" />
					<?php endif; ?>
					<?php echo _AT($tabs[$i][0]); ?>
				</td>
				<td class="tab-spacer">&nbsp;</td>
			<?php else: ?>
				<td class="editor_tab">
					<?php if ($changes[$i]): ?>
						<img src="<?php echo $_base_path; ?>images/changes_bullet.gif" alt="<?php echo _AT('usaved_changes_made'); ?>" height="12" width="15" />
					<?php endif; ?>

					<?php echo '<input type="submit" name="button_'.$i.'" value="'._AT($tabs[$i][0]).'" title="'._AT($tabs[$i][0]).' - alt '.$tabs[$i][2].'" class="editor_buttontab" accesskey="'.$tabs[$i][2].'" onmouseover="this.style.cursor=\'pointer\';" '.$clickEvent.' />'; ?>
				</td>
				<td class="tab-spacer">&nbsp;</td>
			<?php endif; ?>
		<?php endfor; ?>
		<td >&nbsp;</td>
	</tr>
	</table>
<?php }
/**
 * Strips all tags and encodes special characters in the URL
 * Returns false if the URL is invalid
 * 
 * @param string $url
 * @return mixed - returns a stripped and encoded URL or false if URL is invalid
 */
function isValidURL($url) {
    if (substr($url,0,4) === 'http') {
        return filter_var(filter_var($url, FILTER_SANITIZE_STRING), FILTER_VALIDATE_URL);
    }
    return false;
}

/*
 * Parse the primary resources out of the content and save into db.
 * Clean up the removed primary resources from db.
 * @param: $cid: content id
 * @param: $content
 * @return: none
 */
function populate_a4a($cid, $content, $formatting){
	global $my_files, $content_base_href, $contentManager;
	
	// Defining alternatives is only available for content type "html".
	// But don't clean up the a4a tables at other content types in case the user needs them back at html.
	
	
	if ($formatting <> 1) return;

	include_once(TR_INCLUDE_PATH.'classes/A4a/A4a.class.php');
	include_once(TR_INCLUDE_PATH.'classes/XML/XML_HTMLSax/XML_HTMLSax.php');	/* for XML_HTMLSax */
	include_once(TR_INCLUDE_PATH.'classes/ContentOutputParser.class.php');	/* for parser */
	
	// initialize content_base_href; used in format_content
	if (!isset($content_base_href)) {
		$content_row = $contentManager->getContentPage($cid);
		// return if the cid is not found
		if (!is_array($content_row)) {
			return;
		}
		$content_base_href = $content_row["content_path"].'/';
	}
	
	$body = ContentUtility::formatContent($content, $formatting);
    
	$handler = new ContentOutputParser();
	$parser = new XML_HTMLSax();
	$parser->set_object($handler);
	$parser->set_element_handler('openHandler','closeHandler');
	
	$my_files 		= array();
	$parser->parse($body);
	$my_files = array_unique($my_files);
	
	foreach ($my_files as $file) {
		/* filter out full urls */
		$url_parts = @parse_url($file);
		
		// file should be relative to content
		if ((substr($file, 0, 1) == '/')) {
			continue;
		}
		
		// The URL of the movie from youtube.com has been converted above in embed_media().
		// For example:  http://www.youtube.com/watch?v=a0ryB0m0MiM is converted to
		// http://www.youtube.com/v/a0ryB0m0MiM to make it playable. This creates the problem
		// that the parsed-out url (http://www.youtube.com/v/a0ryB0m0MiM) does not match with
		// the URL saved in content table (http://www.youtube.com/watch?v=a0ryB0m0MiM).
		// The code below is to convert the URL back to original.
		$file = ContentUtility::convertYoutubePlayURLToWatchURL($file);
		
		$resources[] = convertAmp($file);  // converts & to &amp;
	}
    
    $a4a = new A4a($cid);
    $db_primary_resources = $a4a->getPrimaryResources();
    
    // clean up the removed resources
    foreach ($db_primary_resources  as $primary_rid=>$db_resource){
        //if this file from our table is not found in the $resource, then it's not used.
    	if(count($resources) == 0 || !in_array($db_resource['resource'], $resources)){
        	$a4a->deletePrimaryResource($primary_rid);
        }
    }
    
    if (count($resources) == 0) return;

	// insert the new resources
    foreach($resources as $primary_resource)
	{
		if (!$a4a->getPrimaryResourceByName($primary_resource)){
			$a4a->setPrimaryResource($cid, $primary_resource, $_SESSION['lang']);
		}
	}
}

// save all changes to the DB
function save_changes($redir, $current_tab) {
	global $contentManager, $addslashes, $msg, $_course_id, $_content_id, $stripslashes;
	
	$_POST['pid']	= intval($_POST['pid']);
	$_POST['_cid']	= intval($_POST['_cid']);
	
	
	$_POST['alternatives'] = intval($_POST['alternatives']);
	
	$_POST['title'] = trim($_POST['title']);
	$_POST['head']	= trim($_POST['head']);
	$_POST['use_customized_head']	= isset($_POST['use_customized_head'])?$_POST['use_customized_head']:0;
	$_POST['body_text']	= $stripslashes(trim($_POST['body_text']));
	$_POST['weblink_text'] = trim($_POST['weblink_text']);
	$_POST['formatting'] = intval($_POST['formatting']);
	$_POST['keywords']	= $stripslashes(trim($_POST['keywords']));
	$_POST['test_message'] = trim($_POST['test_message']);

	//if weblink is selected, use it
	if ($_POST['formatting']==CONTENT_TYPE_WEBLINK) {
	    $url = $_POST['weblink_text'];
	    $validated_url = isValidURL($url);
        if (!validated_url || $validated_url !== $url) {
	       $msg->addError(array('INVALID_INPUT', _AT('weblink')));
	    } else {
		    $_POST['body_text'] = $url;
		    $content_type_pref = CONTENT_TYPE_WEBLINK;
	    }
	} else {
		$content_type_pref = CONTENT_TYPE_CONTENT;
	}

	/*if (!($release_date = generate_release_date())) {
		$msg->addError('BAD_DATE');
	}*/

//	if ($_POST['title'] == '') {
//		$msg->addError(array('EMPTY_FIELDS', _AT('title')));
//	}
		
//	if (!$msg->containsErrors()) {
        $orig_body_text = $_POST['body_text'];  // used to populate a4a tables
//		$_POST['title']			= $addslashes($_POST['title']);
//		$_POST['body_text']		= $addslashes($_POST['body_text']);
//		$_POST['head']  		= $addslashes($_POST['head']);
//		$_POST['keywords']		= $addslashes($_POST['keywords']);
//		$_POST['test_message']	= $addslashes($_POST['test_message']);		

		// add or edit content
		if ($_POST['_cid']) {
			/* editing an existing page */
			$err = $contentManager->editContent($_POST['_cid'], $_POST['title'], $_POST['body_text'], 
			                                    $_POST['keywords'], $_POST['formatting'], 
			                                    $_POST['head'], $_POST['use_customized_head'], 
			                                    $_POST['test_message']);
/*                                                            
//ceppini matteo 09/11/2012
// 13/11/2012                        
// 14/11/2012  
                
$first_part='<table style="width: 100%; display: table;" class="page_template linee_guida">
                <tbody>
                    <tr>
                        <td>
                        <div class="removePageTemplateTopBar" style="display: none;">
                        <div class="removePageTemplate">X</div>
                        </div>
                        </td>
                    </tr><tr><td class="pageTemplateContent" style="border: medium none;">';
$second_part='</tr></td>
            <tr>
                <td>
                    <div style="visibility: hidden;" class="sortTools">
                            <img src="'.TR_BASE_HREF.'/templates/system/top.png" class="movePageTemplateTop" alt="move top">
                            <img src="'.TR_BASE_HREF.'/templates/system/up.png" class="movePageTemplateUp" alt="move up">
                            <img src="'.TR_BASE_HREF.'/templates/system/down.png" class="movePageTemplateDown" alt="move down">
                            <img src="'.TR_BASE_HREF.'/templates/system/bottom.png" class="movePageTemplateBottom" alt="move bottom">
                    </div>
                        
                </td>
            </tr>
        </tbody>
    </table>';




if(strstr($orig_body_text,'removePageTemplateTopBar')===false){
  //$control_string="non trovata";
    $first_part= $first_part. $_POST['body_text'];
    $control_string= $first_part. $second_part;
    $err = $contentManager->editContent($_POST['_cid'], $_POST['title'], $control_string, 
                                        $_POST['keywords'], $_POST['formatting'], 
                                        $_POST['head'], $_POST['use_customized_head'], 
                                        $_POST['test_message']);
}else{
  $first_part= $first_part. $_POST['body_text'];
  $second_part='</tbody></table>';
  $control_string= $first_part. $second_part;
$err = $contentManager->editContent($_POST['_cid'], $_POST['title'], $control_string, 
                                        $_POST['keywords'], $_POST['formatting'], 
                                        $_POST['head'], $_POST['use_customized_head'], 
                                        $_POST['test_message']);
}
                      
// IDEA SOTTARRE AL NUOVO TESTO QUELLO PRECEDENTE E CONTROLLARE SE CONTIENE TESTO E POI RACCHIUDERLO
                        
define('TR_INCLUDE_PATH', '../../include/');
global $associated_forum, $_course_id, $_content_id;
include_once(TR_INCLUDE_PATH.'classes/DAO/DAO.class.php');
require_once(TR_INCLUDE_PATH.'lib/tinymce.inc.php');
require_once(TR_INCLUDE_PATH.'classes/FileUtility.class.php');
Utility::authenticate(TR_PRIV_ISAUTHOR);
$dao = new DAO();
$cid = $_POST['_cid'];
$sql="SELECT text FROM ".TABLE_PREFIX."content WHERE content_id=".$cid."";
$result=$dao->execute($sql);
    if(is_array($result))
    {
        foreach ($result as $support) {
           $text=$support['text'];
           break;
        }  
    }
    //************************************************
    // In $text ho il vecchio contenuto               
    // In $orig_body_text ho tutto il nuovo contenuto 
    //************************************************
    
    //$appoggio=substr($orig_body_text, $text); NON VA
    //$appogio=substr_compare($orig_body_text, $text);
    
    $rr= strlen($text);
    $err = $contentManager->editContent($_POST['_cid'], $_POST['title'], $rr, 
                                                $_POST['keywords'], $_POST['formatting'], 
                                                $_POST['head'], $_POST['use_customized_head'], 
                                                $_POST['test_message']);
    if(!empty($text)){
       // $appoggio=str_replace($text,"",$orig_body_text);
        
     //   $appoggio=str_ireplace($orig_body_text, "", $text);
        // appoggio-->contenuto vecchio
      //  die($text);
      //  $appoggio=substr($orig_body_text,strlen($appoggio));
        $a=(string)$text;
        $lunghezza=strlen($a);
       // die($lunghezza);
        
       $rrrr=str_replace($orig_body_text,"",$text);
        
        $appoggio=substr($orig_body_text,$lunghezza);
        $appoggio=strip_tags($appoggio);
       // die($appoggio);
        
        if(strstr($appoggio,'removePageTemplateTopBar')===false){
          //$control_string="non trovata";
            $first_part=$first_part. '<br>';
            $first_part= $first_part. $appoggio;
            $appoggio= $first_part. $second_part;
            $control_string=$rrrr. $appoggio;
            //die($rrrr);
            $err = $contentManager->editContent($_POST['_cid'], $_POST['title'], $control_string, 
                                                $_POST['keywords'], $_POST['formatting'], 
                                                $_POST['head'], $_POST['use_customized_head'], 
                                                $_POST['test_message']);
        }else{
            $err = $contentManager->editContent($_POST['_cid'], $_POST['title'], $orig_body_text, 
                                                $_POST['keywords'], $_POST['formatting'], 
                                                $_POST['head'], $_POST['use_customized_head'], 
                                                $_POST['test_message']);

        }   
    }else{
        if(strstr($orig_body_text,'removePageTemplateTopBar')===false){
          
            $first_part= $first_part. $_POST['body_text'];
            $control_string= $first_part. $second_part;
            $err = $contentManager->editContent($_POST['_cid'], $_POST['title'], $control_string, 
                                                $_POST['keywords'], $_POST['formatting'], 
                                                $_POST['head'], $_POST['use_customized_head'], 
                                                $_POST['test_message']);
        }else{
          $err = $contentManager->editContent($_POST['_cid'], $_POST['title'], $_POST['body_text'], 
                                                $_POST['keywords'], $_POST['formatting'], 
                                                $_POST['head'], $_POST['use_customized_head'], 
                                                $_POST['test_message']);
        }
    }*/
    
    
                                           
			$cid = $_POST['_cid'];
		} else {
			/* insert new */
			$cid = $contentManager->addContent($_course_id,
												  $_POST['pid'],
												  $_POST['ordering'],
												  $_POST['title'],
												  $_POST['body_text'],
												  $_POST['keywords'],
												  $_POST['related'],
												  $_POST['formatting'],
												  $_POST['head'],
												  $_POST['use_customized_head'],
												  $_POST['test_message'],
												  $content_type_pref);
												  
			$_POST['_cid']    = $cid;
			$_REQUEST['_cid'] = $cid;
		}
		
		
        
        
		if ($cid == 0) return;
		
		// re-populate a4a tables based on the new content
		populate_a4a($cid, $orig_body_text, $_POST['formatting']);
		
		
		
//	}

	/* insert glossary terms */
	/*
	if (is_array($_POST['glossary_defs']) && ($num_terms = count($_POST['glossary_defs']))) {
		global $glossary, $glossary_ids, $msg;

		foreach($_POST['glossary_defs'] as $w => $d) {
			$old_w = $w;
			$key = in_array_cin($w, $glossary_ids);
			$w = urldecode($w);
			$d = $addslashes($d);

			if (($key !== false) && (($glossary[$old_w] != $d) || isset($_POST['related_term'][$old_w])) ) {
				$w = addslashes($w);
				$related_id = intval($_POST['related_term'][$old_w]);
				$sql = "UPDATE ".TABLE_PREFIX."glossary SET definition='$d', related_word_id=$related_id WHERE word_id=$key AND course_id=$_SESSION[course_id]";
				$result = mysql_query($sql, $db);
				$glossary[$old_w] = $d;
			} else if ($key === false && ($d != '')) {
				$w = addslashes($w);
				$related_id = intval($_POST['related_term'][$old_w]);
				$sql = "INSERT INTO ".TABLE_PREFIX."glossary VALUES (NULL, $_SESSION[course_id], '$w', '$d', $related_id)";

				$result = mysql_query($sql, $db);
				$glossary[$old_w] = $d;
			}
		}
	}*/
	if (isset($_GET['tab'])) {
		$current_tab = intval($_GET['tab']);
	}
	if (isset($_POST['current_tab'])) {
		$current_tab = intval($_POST['current_tab']);
	}

	// adapted content: save primary content type
	if (isset($_POST['use_post_for_alt']))
	{
		include_once(TR_INCLUDE_PATH.'classes/DAO/PrimaryResourcesTypesDAO.class.php');
		$primaryResourcesTypesDAO = new PrimaryResourcesTypesDAO();
		
		// 1. delete old primary content type
		$sql = "DELETE FROM ".TABLE_PREFIX."primary_resources_types
		         WHERE primary_resource_id in 
		               (SELECT DISTINCT primary_resource_id 
		                  FROM ".TABLE_PREFIX."primary_resources
		                 WHERE content_id=".$cid."
		                   AND language_code='".$_SESSION['lang']."')";
		$primaryResourcesTypesDAO->execute($sql);
		
		// 2. insert the new primary content type
		$sql = "SELECT pr.primary_resource_id, rt.type_id
		          FROM ".TABLE_PREFIX."primary_resources pr, ".
		                 TABLE_PREFIX."resource_types rt
		         WHERE pr.content_id = ".$cid."
		           AND pr.language_code = '".$_SESSION['lang']."'";
		$all_types_rows = $primaryResourcesTypesDAO->execute($sql);
		
		if (is_array($all_types_rows)) {
			foreach ($all_types_rows as $type) {
				if (isset($_POST['alt_'.$type['primary_resource_id'].'_'.$type['type_id']]))
				{
					$primaryResourcesTypesDAO->Create($type['primary_resource_id'], $type['type_id']);
//					$sql = "INSERT INTO ".TABLE_PREFIX."primary_resources_types (primary_resource_id, type_id)
//					        VALUES (".$type['primary_resource_id'].", ".$type['type_id'].")";
//					$result = mysql_query($sql, $db);
				}
			}
		}
	}
	
	include_once(TR_INCLUDE_PATH.'classes/DAO/ContentTestsAssocDAO.class.php');
	$contentTestsAssocDAO = new ContentTestsAssocDAO();
	$test_rows = $contentTestsAssocDAO->getByContent($_POST['_cid']);
//	$sql = 'SELECT * FROM '.TABLE_PREFIX."content_tests_assoc WHERE content_id=$_POST[cid]";
//	$result = mysql_query($sql, $db);
	$db_test_array = array();
	if (is_array($test_rows)) {
		foreach ($test_rows as $row) {
			$db_test_array[] = $row['test_id'];
		}
	}

	if (is_array($_POST['tid']) && sizeof($_POST['tid']) > 0){
		$toBeDeleted = array_diff($db_test_array, $_POST['tid']);
		$toBeAdded = array_diff($_POST['tid'], $db_test_array);
		//Delete entries
		if (!empty($toBeDeleted)){
			$tids = implode(",", $toBeDeleted);
			$sql = 'DELETE FROM '. TABLE_PREFIX . "content_tests_assoc WHERE content_id=$_POST[cid] AND test_id IN ($tids)";
			$contentTestsAssocDAO->execute($sql);
		}
	
		//Add entries
		if (!empty($toBeAdded)){
			foreach ($toBeAdded as $i => $tid){
				$tid = intval($tid);
//				$sql = 'INSERT INTO '. TABLE_PREFIX . "content_tests_assoc SET content_id=$_POST[cid], test_id=$tid";
//				$result = mysql_query($sql, $db);
				if ($contentTestsAssocDAO->Create($_POST['_cid'], $tid) === false){
					$msg->addError('DB_NOT_UPDATED');
				}
			}
		}
	} else {
		//All tests has been removed.
		$contentTestsAssocDAO->DeleteByContentID($_POST['_cid']);
//		$sql = 'DELETE FROM '. TABLE_PREFIX . "content_tests_assoc WHERE content_id=$_POST[cid]";
//		$result = mysql_query($sql, $db);
	}
	//End Add test

	//TODO*******************BOLOGNA****************REMOVE ME**************/
/*
	if(isset($_SESSION['associated_forum']) && !$msg->containsErrors()){
		if($_SESSION['associated_forum']=='none'){
			$sql = "DELETE FROM ".TABLE_PREFIX."content_forums_assoc WHERE content_id='$_POST[cid]'";
			mysql_query($sql,$db);
		} else {
			$sql = "DELETE FROM ".TABLE_PREFIX."content_forums_assoc WHERE content_id='$_POST[cid]'";
			mysql_query($sql,$db);
			$associated_forum = $_SESSION['associated_forum'];
			for($i=0; $i<count($associated_forum); $i++){
				$sql="INSERT INTO ".TABLE_PREFIX."content_forums_assoc SET content_id='$_POST[cid]',forum_id='$associated_forum[$i]'";
				mysql_query($sql,$db);
			}
		}
		unset($_SESSION['associated_forum']);
	}
*/
	if (!$msg->containsErrors() && $redir) {
		$_SESSION['save_n_close'] = $_POST['save_n_close'];
		
		$msg->addFeedback('ACTION_COMPLETED_SUCCESSFULLY');
		header('Location: '.basename($_SERVER['PHP_SELF']).'?_cid='.$cid.SEP.'close='.$addslashes($_POST['save_n_close']).SEP.'tab='.$addslashes($_POST['current_tab']).SEP.'displayhead='.$addslashes($_POST['displayhead']).SEP.'alternatives='.$addslashes($_POST['alternatives']));
		exit;
	} else {
		return;
	}
}
/*
function generate_release_date($now = false) {
	if ($now) {
		$day  = date('d');
		$month= date('m');
		$year = date('Y');
		$hour = date('H');
		$min  = 0;
	} else {
		$day	= intval($_POST['day']);
		$month	= intval($_POST['month']);
		$year	= intval($_POST['year']);
		$hour	= intval($_POST['hour']);
		$min	= intval($_POST['min']);
	}

	if (!checkdate($month, $day, $year)) {
		return false;
	}

	if (strlen($month) == 1){
		$month = "0$month";
	}
	if (strlen($day) == 1){
		$day = "0$day";
	}
	if (strlen($hour) == 1){
		$hour = "0$hour";
	}
	if (strlen($min) == 1){
		$min = "0$min";
	}
	$release_date = "$year-$month-$day $hour:$min:00";
	
	return $release_date;
}
*/
function check_for_changes($row, $row_alternatives) {
	global $contentManager, $cid, $glossary, $glossary_ids_related, $addslashes;

	$changes = array();

	if ($row && strcmp(trim($addslashes($_POST['title'])), addslashes($row['title']))) {
		$changes[0] = true;
	} else if (!$row && $_POST['title']) {
		$changes[0] = true;
	}

	if ($row && strcmp($addslashes(trim($_POST['head'])), trim(addslashes($row['head'])))) {
		$changes[0] = true;
	} else if (!$row && $_POST['head']) {
		$changes[0] = true;
	}

	if ($row && strcmp($addslashes(trim($_POST['body_text'])), trim(addslashes($row['text'])))) {
		$changes[0] = true;
	} else if (!$row && $_POST['body_text']) {
		$changes[0] = true;
	}
	
    if ($row && strcmp($addslashes(trim($_POST['weblink_text'])), trim(addslashes($row['text'])))) {
        $changes[0] = true;
    } else if (!$row && $_POST['weblink_text']) {
        $changes[0] = true;
    }

	/* use customized head: */
	if ($row && isset($_POST['use_customized_head']) && ($_POST['use_customized_head'] != $row['use_customized_head'])) {
		$changes[0] = true;
	}

	/* formatting: */
	if ($row && strcmp(trim($_POST['formatting']), $row['formatting'])) {
		$changes[0] = true;
	} else if (!$row && $_POST['formatting']) {
		$changes[0] = true;
	}

	/* release date: */
//	if ($row && strcmp(substr(generate_release_date(), 0, -2), substr($row['release_date'], 0, -2))) {
//		/* the substr was added because sometimes the release_date in the db has the seconds field set, which we dont use */
//		/* so it would show a difference, even though it should actually be the same, so we ignore the seconds with the -2 */
//		/* the seconds gets added if the course was created during the installation process. */
//		$changes[1] = true;
//	} else if (!$row && strcmp(generate_release_date(), generate_release_date(true))) {
//		$changes[1] = true;
//	}

	/* related content: */
//	$row_related = $contentManager->getRelatedContent($cid);
//
//	if (is_array($_POST['related']) && is_array($row_related)) {
//		$sum = array_sum(array_diff($_POST['related'], $row_related));
//		$sum += array_sum(array_diff($row_related, $_POST['related']));
//		if ($sum > 0) {
//			$changes[1] = true;
//		}
//	} else if (!is_array($_POST['related']) && !empty($row_related)) {
//		$changes[1] = true;
//	}

	/* keywords */
	if ($row && strcmp(trim($_POST['keywords']), $row['keywords'])) {
		$changes[1] = true;
	}  else if (!$row && $_POST['keywords']) {
		$changes[1] = true;
	}


	/* glossary */
//	if (is_array($_POST['glossary_defs'])) {
//		global $glossary_ids;
//		foreach ($_POST['glossary_defs'] as $w => $d) {
//
//			$key = in_array_cin($w, $glossary_ids);
//			if ($key === false) {
//				/* new term */
//				$changes[2] = true;
//				break;
//			} else if ($cid && ($d &&($d != $glossary[$glossary_ids[$key]]))) {
//				/* changed term */
//				$changes[2] = true;
//				break;
//			}
//		}
//
//		if (is_array($_POST['related_term'])) {
//			foreach($_POST['related_term'] as $term => $r_id) {
//				if ($glossary_ids_related[$term] != $r_id) {
//					$changes[2] = true;
//					break;
//				}
//			}
//		}
//	}

	/* adapted content */
	if (isset($_POST['use_post_for_alt']))
	{
		foreach ($_POST as $alt_id => $alt_value) {
			if (substr($alt_id, 0 ,4) == 'alt_' && $alt_value != $row_alternatives[$alt_id]){
				$changes[2] = true;
				break;
			}
		}
	}
	
	/* test & survey */	
	if ($row && isset($_POST['test_message']) && $_POST['test_message'] != $row['test_message']){
		$changes[3] = true;
	}
	
	$content_tests = $contentManager->getContentTestsAssoc($cid);
	
	if (isset($_POST['visited_tests'])) {
		if (!is_array($content_tests) && is_array($_POST['tid'])) {
			$changes[3] = true;
		}
		if (is_array($content_tests)) {
			for ($i = 0; $i < count($content_tests); $i++) {
				if ($content_tests[$i]['test_id'] <> $_POST['tid'][$i]) {
					$changes[3] = true;
					break;
				}
			}
		}
	}

	return $changes;
}

function paste_from_file() {
	global $msg;
	
	include_once(TR_INCLUDE_PATH.'../home/classes/ContentUtility.class.php');
	if ($_FILES['uploadedfile_paste']['name'] == '')	{
		$msg->addError('FILE_NOT_SELECTED');
		return;
	}
	if ($_FILES['uploadedfile_paste']['name']
		&& (($_FILES['uploadedfile_paste']['type'] == 'text/plain')
			|| ($_FILES['uploadedfile_paste']['type'] == 'text/html')) )
		{

		$path_parts = pathinfo($_FILES['uploadedfile_paste']['name']);
		$ext = strtolower($path_parts['extension']);

		if (in_array($ext, array('html', 'htm'))) {
			$_POST['body_text'] = file_get_contents($_FILES['uploadedfile_paste']['tmp_name']);

			/* get the <title></title> of this page				*/

			$start_pos	= strpos(strtolower($_POST['body_text']), '<title>');
			$end_pos	= strpos(strtolower($_POST['body_text']), '</title>');

			if (($start_pos !== false) && ($end_pos !== false)) {
				$start_pos += strlen('<title>');
				$_POST['title'] = trim(substr($_POST['body_text'], $start_pos, $end_pos-$start_pos));
			}
			unset($start_pos);
			unset($end_pos);

			$_POST['head'] = ContentUtility::getHtmlHeadByTag($_POST['body_text'], array("link", "style", "script")); 
			if (strlen(trim($_POST['head'])) > 0)	
				$_POST['use_customized_head'] = 1;
			else
				$_POST['use_customized_head'] = 0;
			
			$_POST['body_text'] = ContentUtility::getHtmlBody($_POST['body_text']); 

			$msg->addFeedback('FILE_PASTED');
		} else if ($ext == 'txt') {
			$_POST['body_text'] = file_get_contents($_FILES['uploadedfile_paste']['tmp_name']);
			//LAW
			$msg->addFeedback('FILE_PASTED');

		}
	} else {
		$msg->addError('BAD_FILE_TYPE');
	}

	return;
}

//for accessibility checker
function write_temp_file() {
	global $_POST, $msg;

	if (defined('TR_FORCE_GET_FILE') && TR_FORCE_GET_FILE) {
		$content_base = 'get.php/';
	} else {
		$content_base = 'content/' . $_SESSION['course_id'] . '/';
	}

	if ($_POST['content_path']) {
		$content_base .= $_POST['content_path'] . '/';
	}

	$file_name = $_POST['_cid'].'.html';

	if ($handle = fopen(TR_CONTENT_DIR . $file_name, 'wb+')) {
//		$temp_content = '<h2>'.TR_print(stripslashes($_POST['title']), 'content.title').'</h2>';
//
//		if ($_POST['body_text'] != '') {
//			$temp_content .= format_content(stripslashes($_POST['body_text']), $_POST['formatting'], $_POST['glossary_defs']);
//		}
//		$temp_title = $_POST['title'];
//
//		$html_template = '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
//			"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
//		<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
//		<head>
//			<base href="{BASE_HREF}" />
//			<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
//			<title>{TITLE}</title>
//			<meta name="Generator" content="ATutor accessibility checker file - can be deleted">
//		</head>
//		<body>
//		{CONTENT}
//		</body>
//		</html>';
//
//		$page_html = str_replace(	array('{BASE_HREF}', '{TITLE}', '{CONTENT}'),
//									array($content_base, $temp_title, $temp_content),
//									$html_template);
		
		if (!@fwrite($handle, stripslashes($_POST['body_text']))) {
			$msg->addError('FILE_NOT_SAVED');       
	   }
	} else {
		$msg->addError('FILE_NOT_SAVED');
	}
	$msg->printErrors();
}
?>