public with sharing class GDPR_Dynamic_Extension {

    public Case thisCase {get; set;}
    public List <TaskAndComment> tacList {get; set;}
    public List <Integer> indexList = new List<Integer>();

    //Get the fields from FieldSet
    Schema.SObjectType SObjectTypeObj = Schema.getGlobalDescribe().get('Case');
    transient Schema.DescribeSObjectResult DescribeSObjectResultObj = SObjectTypeObj.getDescribe();
    transient Schema.FieldSet fieldSetObj = DescribeSObjectResultObj.FieldSets.getMap().get('GDPR_Task_Fields');

    public Integer fieldSetSize = fieldSetObj.getFields().size();

    public List<Integer> getIntegers() {
            indexList = createIndex(fieldSetSize);
            return indexList;
    }

    public GDPR_Dynamic_Extension(ApexPages.StandardController controller) {
        controller.addFields(new String[]{
                'GDPR_IS_Apps__c',
                'GDPR_TON_Head__c'
        });
        thisCase            = (Case)controller.getRecord();
        tacList             = new List<taskAndComment>();
    }

    public List<taskAndComment> getTheList() {

        if (tacList.isEmpty()) {
            for (Schema.FieldSetMember eachFieldSetMember : fieldSetObj.getFields()) {

                String path      = eachFieldSetMember.getFieldPath();
                String label     = eachFieldSetMember.getLabel();
                Boolean value    = (Boolean)thisCase.get(eachFieldSetMember.getFieldPath());

                taskAndComment t = new taskAndComment(path, label, value);
                tacList.add(t);
            }
            return tacList;
        } else return tacList;
    }

    public PageReference processSelected() {

        for (Integer i = 0; i < tacList.size() ; i++) {
            thisCase.put(tacList[i].fieldPath, tacList[i].fieldValue);
            System.debug(tacList[i].taskComment);
        }
        update thisCase;
        return null;
    }

    public class TaskAndComment{

        public String   fieldPath   {get; set;}
        public String   fieldLabel  {get; set;}
        public Boolean  fieldValue  {get; set;}
        public String   taskComment {get; set;}

        public TaskAndComment(String theFieldPath, String theFieldLabel, Boolean theFieldValue){
            System.debug('5');
            fieldPath   = theFieldPath;
            fieldLabel  = theFieldLabel;
            fieldValue  = theFieldValue;
            taskComment = '';
        }
    }

    public static List<Integer> createIndex(Integer count){
        List<Integer> indexList = new List<Integer>();
        for (Integer i = 0; i < count; i++) {
            indexList.add(i);
        }
        return indexList;
    }

    public void postToChatter(Id c, String message){
        ConnectApi.FeedElement feedElement = ConnectApi.ChatterFeeds.postFeedElement(Network.getNetworkId(), c, ConnectApi.FeedElementType.FeedItem, message);
    }
}