class.ilPollBlock.php

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<?php
/* Copyright (c) 1998-2009 ILIAS open source, Extended GPL, see docs/LICENSE */

include_once("./Services/Block/classes/class.ilCustomBlock.php");

class ilPollBlock extends ilCustomBlock
{
        protected $poll; // [ilObjPoll]
        protected $answers; // [array]
        protected $visible; // [bool]
        protected $active; // [bool]
        
        public function setRefId($a_id)
        {                                               
                include_once "Modules/Poll/classes/class.ilObjPoll.php";
                $this->poll = new ilObjPoll($a_id, true);
                $this->answers = $this->poll->getAnswers();
        }
        
        public function getPoll()
        {
                return $this->poll;
        }
        
        public function hasAnyContent($a_user_id, $a_ref_id)
        {               
                if(!sizeof($this->answers))
                {
                        return false;
                }
                
                include_once "Modules/Poll/classes/class.ilObjPollAccess.php";
                $this->active = ilObjPollAccess::_isActivated($a_ref_id);
                if(!$this->active)
                {
                        return false;
                }
                
                if(!$this->mayVote($a_user_id) &&
                        !$this->maySeeResults($a_user_id))
                {
                        return false;
                }
                
                return true;
        }
        
        public function mayVote($a_user_id)
        {
                if(!$this->active)
                {
                        return false;
                }
                
                if($a_user_id == ANONYMOUS_USER_ID)
                {
                        return false;
                }
                
                if($this->poll->hasUserVoted($a_user_id))
                {
                        return false;                                           
                }
                
                if($this->poll->getVotingPeriod() && 
                        ($this->poll->getVotingPeriodBegin() > time() ||
                        $this->poll->getVotingPeriodEnd() < time()))
                {
                        return false;
                }
                
                return true;
        }
        
        public function mayNotResultsYet()
        {
                if($this->poll->getViewResults() == ilObjPoll::VIEW_RESULTS_AFTER_PERIOD &&
                        $this->poll->getVotingPeriod() &&
                        $this->poll->getVotingPeriodEnd() > time())
                {
                        return true;
                }
                return false;   
        }
        
        public function maySeeResults($a_user_id)
        {
                if(!$this->active)
                {
                        return false;
                }
                
                switch($this->poll->getViewResults())
                {
                        case ilObjPoll::VIEW_RESULTS_NEVER:
                                return false;
                                
                        case ilObjPoll::VIEW_RESULTS_ALWAYS:
                                // fallthrough
                                
                        // #12023 - see mayNotResultsYet()
                        case ilObjPoll::VIEW_RESULTS_AFTER_PERIOD:              
                                return true;
                                
                        case ilObjPoll::VIEW_RESULTS_AFTER_VOTE:        
                                if($this->poll->hasUserVoted($a_user_id))
                                {
                                        return true;
                                }
                                return false;
                }                                               
        }
        
        public function getMessage($a_user_id)
        {
                global $lng;
                
                if(!sizeof($this->answers))
                {
                        return $lng->txt("poll_block_message_no_answers");
                }
                
                if(!$this->active)
                {
                        if(!$this->poll->isOnline())
                        {
                                return $lng->txt("poll_block_message_offline");
                        }
                        if($this->poll->getAccessBegin() > time())
                        {
                                $date = ilDatePresentation::formatDate(new ilDateTime($this->poll->getAccessBegin(), IL_CAL_UNIX));
                                return sprintf($lng->txt("poll_block_message_inactive"), $date);
                        }
                }                       
        }
}

?>