diff --git a/src/Chamilo/CourseBundle/Component/CourseCopy/CourseSelectForm.php b/src/Chamilo/CourseBundle/Component/CourseCopy/CourseSelectForm.php
index b231dde464..56e213e432 100644
--- a/src/Chamilo/CourseBundle/Component/CourseCopy/CourseSelectForm.php
+++ b/src/Chamilo/CourseBundle/Component/CourseCopy/CourseSelectForm.php
@@ -51,61 +51,61 @@ class CourseSelectForm
         $resource_titles[RESOURCE_ATTENDANCE] = get_lang('Attendance');
         $resource_titles[RESOURCE_WORK] = get_lang('ToolStudentPublication');
 ?>
-		<script>
-			function exp(item) {
-				el = document.getElementById('div_'+item);
+        <script>
+            function exp(item) {
+                el = document.getElementById('div_'+item);
                 if (el.style.display == 'none') {
                     el.style.display = '';
                     if (document.getElementById('img_'+item).length)
-					document.getElementById('img_'+item).className = 'fa fa-minus-square-o fa-lg';
-				} else {
-					el.style.display='none';
-					if (document.getElementById('img_'+item).length)
-					document.getElementById('img_'+item).className ='fa fa-plus-square-o fa-lg';
-				}
-			}
+                    document.getElementById('img_'+item).className = 'fa fa-minus-square-o fa-lg';
+                } else {
+                    el.style.display='none';
+                    if (document.getElementById('img_'+item).length)
+                    document.getElementById('img_'+item).className ='fa fa-plus-square-o fa-lg';
+                }
+            }
 
             function setCheckboxForum(type, value, item_id) {
- 				d = document.course_select_form;
- 				for (i = 0; i < d.elements.length; i++) {
-   					if (d.elements[i].type == "checkbox") {
-						var name = d.elements[i].attributes.getNamedItem('name').nodeValue;
- 						if (name.indexOf(type) > 0 || type == 'all') {
+                d = document.course_select_form;
+                for (i = 0; i < d.elements.length; i++) {
+                    if (d.elements[i].type == "checkbox") {
+                        var name = d.elements[i].attributes.getNamedItem('name').nodeValue;
+                        if (name.indexOf(type) > 0 || type == 'all') {
                             if ($(d.elements[i]).attr('rel') == item_id) {
                                 d.elements[i].checked = value;
                             }
-						}
-   					}
- 				}
-			}
-
-			function setCheckbox(type,value) {
- 				d = document.course_select_form;
- 				for (i = 0; i < d.elements.length; i++) {
-   					if (d.elements[i].type == "checkbox") {
-						var name = d.elements[i].attributes.getNamedItem('name').nodeValue;
- 						if( name.indexOf(type) > 0 || type == 'all' ){
-						     d.elements[i].checked = value;
-						}
-   					}
- 				}
-			}
-
-			function checkLearnPath(message){
-				d = document.course_select_form;
- 				for (i = 0; i < d.elements.length; i++) {
- 					if (d.elements[i].type == "checkbox") {
-						var name = d.elements[i].attributes.getNamedItem('name').nodeValue;
- 						if( name.indexOf('learnpath') > 0){
- 							if(d.elements[i].checked){
-	 							setCheckbox('document',true);
-	 							alert(message);
-	 							break;
- 							}
- 						}
- 					}
- 				}
-			}
+                        }
+                    }
+                }
+            }
+
+            function setCheckbox(type,value) {
+                d = document.course_select_form;
+                for (i = 0; i < d.elements.length; i++) {
+                    if (d.elements[i].type == "checkbox") {
+                        var name = d.elements[i].attributes.getNamedItem('name').nodeValue;
+                        if( name.indexOf(type) > 0 || type == 'all' ){
+                             d.elements[i].checked = value;
+                        }
+                    }
+                }
+            }
+
+            function checkLearnPath(message){
+                d = document.course_select_form;
+                for (i = 0; i < d.elements.length; i++) {
+                    if (d.elements[i].type == "checkbox") {
+                        var name = d.elements[i].attributes.getNamedItem('name').nodeValue;
+                        if( name.indexOf('learnpath') > 0){
+                            if(d.elements[i].checked){
+                                setCheckbox('document',true);
+                                alert(message);
+                                break;
+                            }
+                        }
+                    }
+                }
+            }
 
             function check_forum(obj) {
                 var id = $(obj).attr('rel');
@@ -143,48 +143,48 @@ class CourseSelectForm
                 $('#resource_Forum_Category_'+my_id).attr('checked','checked');
                 $('#resource_forum_'+forum_id).attr('checked','checked');
             }
-		</script>
-		<?php
-		// get destination course title
+        </script>
+        <?php
+        // get destination course title
         if (!empty($hidden_fields['destination_course'])) {
             $sessionTitle = !empty($hidden_fields['destination_session']) ? ' ('.api_get_session_name($hidden_fields['destination_session']).')' : null;
-            $course_infos = CourseManager::get_course_information($hidden_fields['destination_course']);
-			echo '<h3>';
-			echo get_lang('DestinationCourse').' : '.$course_infos['title'].' ('.$course_infos['code'].') '.$sessionTitle;
-			echo '</h3>';
-		}
+            $courseInfo = api_get_course_info($hidden_fields['destination_course']);
+            echo '<h3>';
+            echo get_lang('DestinationCourse').' : '.$courseInfo['title'].' ('.$courseInfo['code'].') '.$sessionTitle;
+            echo '</h3>';
+        }
         echo '<script src="'.api_get_path(WEB_CODE_PATH).'inc/lib/javascript/upload.js" type="text/javascript"></script>';
         echo '<div class="tool-backups-options">';
-		echo '<form method="post" id="upload_form" name="course_select_form">';
-		echo '<input type="hidden" name="action" value="course_select_form"/>';
+        echo '<form method="post" id="upload_form" name="course_select_form">';
+        echo '<input type="hidden" name="action" value="course_select_form"/>';
 
-		if (!empty($hidden_fields['destination_course']) &&
+        if (!empty($hidden_fields['destination_course']) &&
             !empty($hidden_fields['origin_course']) &&
             !empty($hidden_fields['destination_session']) &&
             !empty($hidden_fields['origin_session'])
         ) {
-			echo '<input type="hidden" name="destination_course" 	value="'.$hidden_fields['destination_course'].'"/>';
-			echo '<input type="hidden" name="origin_course" 		value="'.$hidden_fields['origin_course'].'"/>';
-			echo '<input type="hidden" name="destination_session" 	value="'.$hidden_fields['destination_session'].'"/>';
-			echo '<input type="hidden" name="origin_session" 		value="'.$hidden_fields['origin_session'].'"/>';
-		}
+            echo '<input type="hidden" name="destination_course" 	value="'.$hidden_fields['destination_course'].'"/>';
+            echo '<input type="hidden" name="origin_course" 		value="'.$hidden_fields['origin_course'].'"/>';
+            echo '<input type="hidden" name="destination_session" 	value="'.$hidden_fields['destination_session'].'"/>';
+            echo '<input type="hidden" name="origin_session" 		value="'.$hidden_fields['origin_session'].'"/>';
+        }
 
-		$element_count = 0;
+        $element_count = 0;
         $forum_categories = array();
         $forums = array();
         $forum_topics = array();
 
         echo '<p>';
-		echo get_lang('SelectResources');
-		echo '</p>';
+        echo get_lang('SelectResources');
+        echo '</p>';
 
         echo Display::return_message(get_lang('DontForgetToSelectTheMediaFilesIfYourResourceNeedIt'));
 
         foreach ($course->resources as $type => $resources) {
             if (count($resources) > 0) {
-				switch ($type) {
-					//Resources to avoid
-					case RESOURCE_FORUMCATEGORY:
+                switch ($type) {
+                    //Resources to avoid
+                    case RESOURCE_FORUMCATEGORY:
                         foreach ($resources as $id => $resource) {
                             $forum_categories[$id] = $resource;
                         }
@@ -211,29 +211,44 @@ class CourseSelectForm
                         break;
                     default:
                         echo '<div class="item-backup" onclick="javascript:exp('."'$type'".');">';
-						echo '<em id="img_'.$type.'" class="fa fa-minus-square-o fa-lg" ></em>';
-						echo '<span class="title">'.$resource_titles[$type].'</span></div>';
-						echo '<div class="item-content" id="div_'.$type.'">';
-						if ($type == RESOURCE_LEARNPATH) {
-    						echo Display::return_message(get_lang('ToExportLearnpathWithQuizYouHaveToSelectQuiz'), 'warning');
-    						echo Display::return_message(get_lang('IfYourLPsHaveAudioFilesIncludedYouShouldSelectThemFromTheDocuments'), 'warning');
-						}
-						if ($type == RESOURCE_DOCUMENT) {
+                        echo '<em id="img_'.$type.'" class="fa fa-minus-square-o fa-lg" ></em>';
+                        echo '<span class="title">'.$resource_titles[$type].'</span></div>';
+                        echo '<div class="item-content" id="div_'.$type.'">';
+                        if ($type == RESOURCE_LEARNPATH) {
+                            echo Display::return_message(
+                                get_lang(
+                                    'ToExportLearnpathWithQuizYouHaveToSelectQuiz'
+                                ),
+                                'warning'
+                            );
+                            echo Display::return_message(
+                                get_lang(
+                                    'IfYourLPsHaveAudioFilesIncludedYouShouldSelectThemFromTheDocuments'
+                                ),
+                                'warning'
+                            );
+                        }
+                        if ($type == RESOURCE_DOCUMENT) {
                             if (api_get_setting('show_glossary_in_documents') != 'none') {
-                                echo Display::return_message(get_lang('ToExportDocumentsWithGlossaryYouHaveToSelectGlossary'), 'warning');
+                                echo Display::return_message(
+                                    get_lang(
+                                        'ToExportDocumentsWithGlossaryYouHaveToSelectGlossary'
+                                    ),
+                                    'warning'
+                                );
                             }
-						}
+                        }
 
-						echo '<div class="well">';
+                        echo '<div class="well">';
                         echo '<div class="btn-group">';
-						echo "<a class=\"btn btn-default\" href=\"javascript: void(0);\" onclick=\"javascript: setCheckbox('$type',true);\" >".get_lang('All')."</a>";
+                        echo "<a class=\"btn btn-default\" href=\"javascript: void(0);\" onclick=\"javascript: setCheckbox('$type',true);\" >".get_lang('All')."</a>";
                         echo "<a class=\"btn btn-default\" href=\"javascript: void(0);\" onclick=\"javascript:setCheckbox('$type',false);\" >".get_lang('None')."</a>";
-						echo '</div>';
+                        echo '</div>';
                         echo '<ul class="list-backups-options">';
-						foreach ($resources as $id => $resource) {
+                        foreach ($resources as $id => $resource) {
                             if ($resource) {
                                 echo '<li>';
-								// Event obj in 1.9.x in 1.10.x the class is CalendarEvent
+                                // Event obj in 1.9.x in 1.10.x the class is CalendarEvent
                                 Resource::setClassType($resource);
                                 echo '<label class="checkbox">';
                                 echo '<input type="checkbox" name="resource['.$type.']['.$id.']"  id="resource['.$type.']['.$id.']" />';
@@ -241,15 +256,15 @@ class CourseSelectForm
                                 echo '</label>';
                                 echo '</li>';
                             }
-						}
+                        }
                         echo '</ul>';
-						echo '</div>';
-						echo '</div>';
-						echo '<script language="javascript">exp('."'$type'".')</script>';
-						$element_count++;
+                        echo '</div>';
+                        echo '</div>';
+                        echo '<script language="javascript">exp('."'$type'".')</script>';
+                        $element_count++;
                 }
-			}
-		}
+            }
+        }
 
         //Fixes forum order
         if (!empty($forum_categories)) {
@@ -303,66 +318,65 @@ class CourseSelectForm
             echo '<script language="javascript">exp('."'$type'".')</script>';
         }
 
-		if ($avoid_serialize) {
-			/*Documents are avoided due the huge amount of memory that the serialize php function "eats"
-			(when there are directories with hundred/thousand of files) */
-			// this is a known issue of serialize
-			$course->resources['document'] = null;
-		}
-
-		echo '<input type="hidden" name="course" value="'.base64_encode(Course::serialize($course)).'"/>';
+        if ($avoid_serialize) {
+            /*Documents are avoided due the huge amount of memory that the serialize php function "eats"
+            (when there are directories with hundred/thousand of files) */
+            // this is a known issue of serialize
+            $course->resources['document'] = null;
+        }
 
-		if (is_array($hidden_fields)) {
-			foreach ($hidden_fields as $key => $value) {
-				echo '<input type="hidden" name="'.$key.'" value="'.$value.'"/>';
-			}
-		}
+        echo '<input type="hidden" name="course" value="'.base64_encode(Course::serialize($course)).'"/>';
+        if (is_array($hidden_fields)) {
+            foreach ($hidden_fields as $key => $value) {
+                echo '<input type="hidden" name="'.$key.'" value="'.$value.'"/>';
+            }
+        }
 
         $recycleOption = isset($_POST['recycle_option']) ? true : false;
 
-		if (empty($element_count)) {
-		    echo Display::return_message(get_lang('NoDataAvailable'), 'warning');
-		} else {
-    		if (!empty($hidden_fields['destination_session'])) {
-    			echo '<br /><button class="save" type="submit" onclick="javascript:if(!confirm('."'".addslashes(api_htmlentities(get_lang("ConfirmYourChoice"), ENT_QUOTES, $charset))."'".')) return false;" >'.
+        if (empty($element_count)) {
+            echo Display::return_message(get_lang('NoDataAvailable'), 'warning');
+        } else {
+            if (!empty($hidden_fields['destination_session'])) {
+                echo '<br /><button class="save" type="submit" onclick="javascript:if(!confirm('."'".addslashes(api_htmlentities(get_lang("ConfirmYourChoice"), ENT_QUOTES, $charset))."'".')) return false;" >'.
                     get_lang('Ok').'</button>';
-    		} else {
+            } else {
                 if ($recycleOption) {
                     echo '<br /><button class="save" type="submit">'.
                         get_lang('Ok').'</button>';
                 } else {
-    			    echo '<br /><button class="save" type="submit" onclick="checkLearnPath(\''.addslashes(get_lang('DocumentsWillBeAddedToo')).'\')">'.
+                    echo '<br /><button class="save" type="submit" onclick="checkLearnPath(\''.addslashes(get_lang('DocumentsWillBeAddedToo')).'\')">'.
                     get_lang('Ok').'</button>';
                 }
-    		}
-		}
+            }
+        }
 
-		self::display_hidden_quiz_questions($course);
-		self::display_hidden_scorm_directories($course);
-		echo '</form>';
+        self::display_hidden_quiz_questions($course);
+        self::display_hidden_scorm_directories($course);
+        echo '</form>';
         echo '</div>';
-		echo '<div id="dynamic_div" style="display:block;margin-left:40%;margin-top:10px;height:50px;"></div>';
-	}
+        echo '<div id="dynamic_div" style="display:block;margin-left:40%;margin-top:10px;height:50px;"></div>';
+    }
 
     /**
      * @param $course
      */
     public static function display_hidden_quiz_questions($course)
     {
-		if (is_array($course->resources)) {
-			foreach ($course->resources as $type => $resources) {
-				if (count($resources) > 0) {
-					switch ($type) {
-						case RESOURCE_QUIZQUESTION:
-							foreach ($resources as $id => $resource) {
-								echo '<input type="hidden" name="resource['.RESOURCE_QUIZQUESTION.']['.$id.']" id="resource['.RESOURCE_QUIZQUESTION.']['.$id.']" value="On" />';
-							}
-							break;
-					}
-				}
-			}
-		}
-	}
+        if (is_array($course->resources)) {
+            foreach ($course->resources as $type => $resources) {
+                if (count($resources) > 0) {
+                    switch ($type) {
+                        case RESOURCE_QUIZQUESTION:
+                            foreach ($resources as $id => $resource) {
+                                echo '<input type="hidden" name="resource['.RESOURCE_QUIZQUESTION.']['.$id.']" id="resource['.RESOURCE_QUIZQUESTION.']['.$id.']" value="On" />';
+                            }
+                            break;
+                    }
+                }
+            }
+        }
+    }
 
     /**
      * @param $course
@@ -370,30 +384,30 @@ class CourseSelectForm
     public static function display_hidden_scorm_directories($course)
     {
         if (is_array($course->resources)) {
-			foreach ($course->resources as $type => $resources) {
-				if (count($resources) > 0) {
-					switch ($type) {
-						case RESOURCE_SCORM:
-							foreach ($resources as $id => $resource) {
-								echo '<input type="hidden" name="resource['.RESOURCE_SCORM.']['.$id.']" id="resource['.RESOURCE_SCORM.']['.$id.']" value="On" />';
-							}
-							break;
-					}
-				}
-			}
-		}
-	}
-
-	/**
-	 * Get the posted course
-	 * @param string $from who calls the function?
+            foreach ($course->resources as $type => $resources) {
+                if (count($resources) > 0) {
+                    switch ($type) {
+                        case RESOURCE_SCORM:
+                            foreach ($resources as $id => $resource) {
+                                echo '<input type="hidden" name="resource['.RESOURCE_SCORM.']['.$id.']" id="resource['.RESOURCE_SCORM.']['.$id.']" value="On" />';
+                            }
+                            break;
+                    }
+                }
+            }
+        }
+    }
+
+    /**
+     * Get the posted course
+     * @param string $from who calls the function?
      * It can be copy_course, create_backup, import_backup or recycle_course
      * @param int $session_id
      * @param string $course_code
-	 * @return course The course-object with all resources selected by the user
-	 * in the form given by display_form(...)
-	 */
-	public static function get_posted_course($from = '', $session_id = 0, $course_code = '')
+     * @return course The course-object with all resources selected by the user
+     * in the form given by display_form(...)
+     */
+    public static function get_posted_course($from = '', $session_id = 0, $course_code = '')
     {
         $course = null;
         if (isset($_POST['course'])) {
@@ -402,40 +416,40 @@ class CourseSelectForm
             return false;
         }
 
-		// Create the resource DOCUMENT objects
-		// Loading the results from the checkboxes of ethe javascript
-		$resource = isset($_POST['resource'][RESOURCE_DOCUMENT]) ? $_POST['resource'][RESOURCE_DOCUMENT] : null;
+        // Create the resource DOCUMENT objects
+        // Loading the results from the checkboxes of ethe javascript
+        $resource = isset($_POST['resource'][RESOURCE_DOCUMENT]) ? $_POST['resource'][RESOURCE_DOCUMENT] : null;
 
-		$course_info = api_get_course_info($course_code);
-		$table_doc = Database::get_course_table(TABLE_DOCUMENT);
-		$table_prop = Database::get_course_table(TABLE_ITEM_PROPERTY);
-		$course_id = $course_info['real_id'];
+        $course_info = api_get_course_info($course_code);
+        $table_doc = Database::get_course_table(TABLE_DOCUMENT);
+        $table_prop = Database::get_course_table(TABLE_ITEM_PROPERTY);
+        $course_id = $course_info['real_id'];
 
-		/* Searching the documents resource that have been set to null because
+        /* Searching the documents resource that have been set to null because
         $avoid_serialize is true in the display_form() function*/
-		if ($from === 'copy_course') {
-			if (is_array($resource)) {
-				$resource = array_keys($resource);
-				foreach ($resource as $resource_item) {
-					$conditionSession = '';
-					if (!empty($session_id)) {
-						$session_id = intval($session_id);
-						$conditionSession = ' AND d.session_id ='.$session_id;
-					}
-
-					$sql = 'SELECT d.id, d.path, d.comment, d.title, d.filetype, d.size
-							FROM '.$table_doc.' d 
-							INNER JOIN '.$table_prop.' p
-							ON (d.c_id = p.c_id)
-							WHERE
-							    d.c_id = '.$course_id.' AND
+        if ($from === 'copy_course') {
+            if (is_array($resource)) {
+                $resource = array_keys($resource);
+                foreach ($resource as $resource_item) {
+                    $conditionSession = '';
+                    if (!empty($session_id)) {
+                        $session_id = intval($session_id);
+                        $conditionSession = ' AND d.session_id ='.$session_id;
+                    }
+
+                    $sql = 'SELECT d.id, d.path, d.comment, d.title, d.filetype, d.size
+                            FROM '.$table_doc.' d 
+                            INNER JOIN '.$table_prop.' p
+                            ON (d.c_id = p.c_id)
+                            WHERE
+                                d.c_id = '.$course_id.' AND
                                 p.c_id = '.$course_id.' AND
                                 tool = \''.TOOL_DOCUMENT.'\' AND
                                 p.ref = d.id AND p.visibility != 2 AND
                                 d.id = '.$resource_item.$conditionSession.'
-							ORDER BY path';
-					$db_result = Database::query($sql);
-					while ($obj = Database::fetch_object($db_result)) {
+                            ORDER BY path';
+                    $db_result = Database::query($sql);
+                    while ($obj = Database::fetch_object($db_result)) {
                         $doc = new Document(
                             $obj->id,
                             $obj->path,
@@ -459,24 +473,24 @@ class CourseSelectForm
                             }
                             $course->resources[RESOURCE_DOCUMENT][$resource_item]->item_properties = $all_properties;
                         }
-					}
-				}
-			}
-		}
-
-		if (is_array($course->resources)) {
-			foreach ($course->resources as $type => $resources) {
-				switch ($type) {
-					case RESOURCE_SURVEYQUESTION:
-						foreach ($resources as $id => $obj) {
-						    if (isset($_POST['resource'][RESOURCE_SURVEY]) &&
+                    }
+                }
+            }
+        }
+
+        if (is_array($course->resources)) {
+            foreach ($course->resources as $type => $resources) {
+                switch ($type) {
+                    case RESOURCE_SURVEYQUESTION:
+                        foreach ($resources as $id => $obj) {
+                            if (isset($_POST['resource'][RESOURCE_SURVEY]) &&
                                 is_array($_POST['resource'][RESOURCE_SURVEY]) &&
                                 !in_array($obj->survey_id, array_keys($_POST['resource'][RESOURCE_SURVEY]))
                             ) {
-								unset($course->resources[$type][$id]);
-							}
-						}
-						break;
+                                unset($course->resources[$type][$id]);
+                            }
+                        }
+                        break;
                     case RESOURCE_FORUMTOPIC:
                     case RESOURCE_FORUMPOST:
                        //Add post from topic
@@ -529,24 +543,24 @@ class CourseSelectForm
                             }
                         }
                         // no break
-					case RESOURCE_LINKCATEGORY:
-					    // no break
-					case RESOURCE_FORUMCATEGORY:
-					    // no break
-					case RESOURCE_QUIZQUESTION:
-					    // no break
-					case RESOURCE_DOCUMENT:
-						// Mark folders to import which are not selected by the user to import,
-						// but in which a document was selected.
-						$documents = isset($_POST['resource'][RESOURCE_DOCUMENT]) ? $_POST['resource'][RESOURCE_DOCUMENT] : null;
-						if (!empty($resources) && is_array($resources))
-							foreach ($resources as $id => $obj) {
-								if (isset($obj->file_type) && $obj->file_type == 'folder' &&
+                    case RESOURCE_LINKCATEGORY:
+                        // no break
+                    case RESOURCE_FORUMCATEGORY:
+                        // no break
+                    case RESOURCE_QUIZQUESTION:
+                        // no break
+                    case RESOURCE_DOCUMENT:
+                        // Mark folders to import which are not selected by the user to import,
+                        // but in which a document was selected.
+                        $documents = isset($_POST['resource'][RESOURCE_DOCUMENT]) ? $_POST['resource'][RESOURCE_DOCUMENT] : null;
+                        if (!empty($resources) && is_array($resources))
+                            foreach ($resources as $id => $obj) {
+                                if (isset($obj->file_type) && $obj->file_type == 'folder' &&
                                     !isset($_POST['resource'][RESOURCE_DOCUMENT][$id]) &&
                                     is_array($documents)
                                 ) {
-									foreach ($documents as $id_to_check => $post_value) {
-									    if (isset($resources[$id_to_check])) {
+                                    foreach ($documents as $id_to_check => $post_value) {
+                                        if (isset($resources[$id_to_check])) {
                                             $obj_to_check = $resources[$id_to_check];
                                             $shared_path_part = substr(
                                                 $obj_to_check->path,
@@ -558,151 +572,153 @@ class CourseSelectForm
                                                 break;
                                             }
                                         }
-									}
-								}
-							}
+                                    }
+                                }
+                            }
                         // no break
-					default:
-						if (!empty($resources) && is_array($resources)) {
-							foreach ($resources as $id => $obj) {
-								$resource_is_used_elsewhere = $course->is_linked_resource($obj);
-								// check if document is in a quiz (audio/video)
-								if ($type == RESOURCE_DOCUMENT && $course->has_resources(RESOURCE_QUIZ)) {
-									foreach ($course->resources[RESOURCE_QUIZ] as $quiz) {
+                    default:
+                        if (!empty($resources) && is_array($resources)) {
+                            foreach ($resources as $id => $obj) {
+                                $resource_is_used_elsewhere = $course->is_linked_resource($obj);
+                                // check if document is in a quiz (audio/video)
+                                if ($type == RESOURCE_DOCUMENT && $course->has_resources(RESOURCE_QUIZ)) {
+                                    foreach ($course->resources[RESOURCE_QUIZ] as $quiz) {
                                         $quiz = $quiz->obj;
-										if (isset($quiz->media) && $quiz->media == $id) {
-											$resource_is_used_elsewhere = true;
-										}
-									}
-								}
-								if (!isset($_POST['resource'][$type][$id]) && !$resource_is_used_elsewhere) {
-									unset($course->resources[$type][$id]);
-								}
-							}
-						}
-				}
-			}
-		}
-
-		return $course;
-	}
-
-	/**
-	 * Display the form session export
+                                        if (isset($quiz->media) && $quiz->media == $id) {
+                                            $resource_is_used_elsewhere = true;
+                                        }
+                                    }
+                                }
+                                if (!isset($_POST['resource'][$type][$id]) && !$resource_is_used_elsewhere) {
+                                    unset($course->resources[$type][$id]);
+                                }
+                            }
+                        }
+                }
+            }
+        }
+
+        return $course;
+    }
+
+    /**
+     * Display the form session export
      * @param array $list_course
-	 * @param array $hidden_fields Hidden fields to add to the form.
+     * @param array $hidden_fields Hidden fields to add to the form.
      * @param boolean $avoid_serialize the document array will be serialize. This is used in the course_copy.php file
-	 */
+     */
     public static function display_form_session_export(
         $list_course,
         $hidden_fields = null,
         $avoid_serialize = false
     ) {
         ?>
-		<script>
-			function exp(item) {
-				el = document.getElementById('div_'+item);
+        <script>
+            function exp(item) {
+                el = document.getElementById('div_'+item);
                 if (el.style.display == 'none') {
                     el.style.display = '';
                     if (document.getElementById('img_'+item).length)
-					document.getElementById('img_'+item).className('fa fa-minus-square-o fa-lg');
-				}
-				else{
+                    document.getElementById('img_'+item).className('fa fa-minus-square-o fa-lg');
+                }
+                else{
                     el.style.display = 'none';
                     if (document.getElementById('img_'+item).length)
-					document.getElementById('img_'+item).className('fa fa-plus-square-o fa-lg');
-				}
-			}
-			function setCheckbox(type,value) {
- 				d = document.course_select_form;
- 				for (i = 0; i < d.elements.length; i++) {
-   					if (d.elements[i].type == "checkbox") {
-						var name = d.elements[i].attributes.getNamedItem('name').nodeValue;
- 						if( name.indexOf(type) > 0 || type == 'all' ){
-						     d.elements[i].checked = value;
-						}
-   					}
- 				}
-			}
-			function checkLearnPath(message){
-				d = document.course_select_form;
- 				for (i = 0; i < d.elements.length; i++) {
- 					if (d.elements[i].type == "checkbox") {
-						var name = d.elements[i].attributes.getNamedItem('name').nodeValue;
- 						if( name.indexOf('learnpath') > 0){
- 							if(d.elements[i].checked){
-	 							setCheckbox('document',true);
-	 							alert(message);
-	 							break;
- 							}
- 						}
- 					}
- 				}
-			}
-		</script>
-		<?php
-
-		//get destination course title
-		if (!empty($hidden_fields['destination_course'])) {
-             if (!empty($hidden_fields['destination_session'])) {
-                 $sessionTitle = ' ('.api_get_session_name($hidden_fields['destination_session']).')';
-             } else {
-                 $sessionTitle = null;
-             }
-            $course_infos = CourseManager::get_course_information($hidden_fields['destination_course']);
-			echo '<h3>';
-				echo get_lang('DestinationCourse').' : '.$course_infos['title'].$sessionTitle;
-			echo '</h3>';
-		}
-
-		echo '<script src="'.api_get_path(WEB_CODE_PATH).'inc/lib/javascript/upload.js" type="text/javascript"></script>';
+                    document.getElementById('img_'+item).className('fa fa-plus-square-o fa-lg');
+                }
+            }
+            function setCheckbox(type,value) {
+                d = document.course_select_form;
+                for (i = 0; i < d.elements.length; i++) {
+                    if (d.elements[i].type == "checkbox") {
+                        var name = d.elements[i].attributes.getNamedItem('name').nodeValue;
+                        if( name.indexOf(type) > 0 || type == 'all' ){
+                             d.elements[i].checked = value;
+                        }
+                    }
+                }
+            }
+            function checkLearnPath(message){
+                d = document.course_select_form;
+                for (i = 0; i < d.elements.length; i++) {
+                    if (d.elements[i].type == "checkbox") {
+                        var name = d.elements[i].attributes.getNamedItem('name').nodeValue;
+                        if( name.indexOf('learnpath') > 0){
+                            if(d.elements[i].checked){
+                                setCheckbox('document',true);
+                                alert(message);
+                                break;
+                            }
+                        }
+                    }
+                }
+            }
+        </script>
+        <?php
+
+        //get destination course title
+        if (!empty($hidden_fields['destination_course'])) {
+            if (!empty($hidden_fields['destination_session'])) {
+                $sessionTitle = ' ('.api_get_session_name($hidden_fields['destination_session']).')';
+            } else {
+                $sessionTitle = null;
+            }
+            $courseInfo = api_get_course_info(
+                $hidden_fields['destination_course']
+            );
+            echo '<h3>';
+            echo get_lang('DestinationCourse').' : '.$courseInfo['title'].$sessionTitle;
+            echo '</h3>';
+        }
+
+        echo '<script src="'.api_get_path(WEB_CODE_PATH).'inc/lib/javascript/upload.js" type="text/javascript"></script>';
         $icon = Display::returnIconPath('progress_bar.gif');
         echo '<div class="tool-backups-options">';
-		echo '<form method="post" id="upload_form" name="course_select_form">';
-		echo '<input type="hidden" name="action" value="course_select_form"/>';
-		foreach ($list_course as $course) {
-			foreach ($course->resources as $type => $resources) {
-				if (count($resources) > 0) {
+        echo '<form method="post" id="upload_form" name="course_select_form">';
+        echo '<input type="hidden" name="action" value="course_select_form"/>';
+        foreach ($list_course as $course) {
+            foreach ($course->resources as $type => $resources) {
+                if (count($resources) > 0) {
                     echo '<div class="item-backup" onclick="javascript:exp('."'$course->code'".');">';
-					echo '<em id="img_'.$course->code.'" class="fa fa-minus-square-o fa-lg"></em>';
-					echo '<span class="title"> '.$course->code.'</span></div>';
-					echo '<div class="item-content" id="div_'.$course->code.'">';
-					echo '<blockquote>';
+                    echo '<em id="img_'.$course->code.'" class="fa fa-minus-square-o fa-lg"></em>';
+                    echo '<span class="title"> '.$course->code.'</span></div>';
+                    echo '<div class="item-content" id="div_'.$course->code.'">';
+                    echo '<blockquote>';
 
                     echo '<div class="btn-group">';
-					echo "<a class=\"btn\" href=\"#\" onclick=\"javascript:setCheckbox('".$course->code."',true);\" >".get_lang('All')."</a>";
+                    echo "<a class=\"btn\" href=\"#\" onclick=\"javascript:setCheckbox('".$course->code."',true);\" >".get_lang('All')."</a>";
                     echo "<a class=\"btn\" href=\"#\" onclick=\"javascript:setCheckbox('".$course->code."',false);\" >".get_lang('None')."</a>";
-					echo '</div>';
+                    echo '</div>';
 
-					foreach ($resources as $id => $resource) {
-						echo '<label class="checkbox" for="resource['.$course->code.']['.$id.']">';
+                    foreach ($resources as $id => $resource) {
+                        echo '<label class="checkbox" for="resource['.$course->code.']['.$id.']">';
                         echo '<input type="checkbox" name="resource['.$course->code.']['.$id.']" id="resource['.$course->code.']['.$id.']"/>';
-						$resource->show();
-						echo '</label>';
-					}
-					echo '</blockquote>';
-					echo '</div>';
-					echo '<script type="text/javascript">exp('."'$course->code'".')</script>';
-				}
-			}
-		}
-		if ($avoid_serialize) {
-			//Documents are avoided due the huge amount of memory that the serialize php function "eats" (when there are directories with hundred/thousand of files)
-			// this is a known issue of serialize
-			$course->resources['document'] = null;
-		}
-		echo '<input type="hidden" name="course" value="'.base64_encode(Course::serialize($course)).'"/>';
-		if (is_array($hidden_fields)) {
-			foreach ($hidden_fields as $key => $value) {
-				echo "\n";
-				echo '<input type="hidden" name="'.$key.'" value="'.$value.'"/>';
-			}
-		}
-		echo '<br /><button class="save" type="submit" onclick="checkLearnPath(\''.addslashes(get_lang('DocumentsWillBeAddedToo')).'\')">'.get_lang('Ok').'</button>';
-		self::display_hidden_quiz_questions($course);
-		self::display_hidden_scorm_directories($course);
-		echo '</form>';
+                        $resource->show();
+                        echo '</label>';
+                    }
+                    echo '</blockquote>';
+                    echo '</div>';
+                    echo '<script type="text/javascript">exp('."'$course->code'".')</script>';
+                }
+            }
+        }
+        if ($avoid_serialize) {
+            //Documents are avoided due the huge amount of memory that the serialize php function "eats" (when there are directories with hundred/thousand of files)
+            // this is a known issue of serialize
+            $course->resources['document'] = null;
+        }
+        echo '<input type="hidden" name="course" value="'.base64_encode(Course::serialize($course)).'"/>';
+        if (is_array($hidden_fields)) {
+            foreach ($hidden_fields as $key => $value) {
+                echo "\n";
+                echo '<input type="hidden" name="'.$key.'" value="'.$value.'"/>';
+            }
+        }
+        echo '<br /><button class="save" type="submit" onclick="checkLearnPath(\''.addslashes(get_lang('DocumentsWillBeAddedToo')).'\')">'.get_lang('Ok').'</button>';
+        self::display_hidden_quiz_questions($course);
+        self::display_hidden_scorm_directories($course);
+        echo '</form>';
         echo '</div>';
-		echo '<div id="dynamic_div" style="display:block;margin-left:40%;margin-top:10px;height:50px;"></div>';
-	}
+        echo '<div id="dynamic_div" style="display:block;margin-left:40%;margin-top:10px;height:50px;"></div>';
+    }
 }