function qpuserchoice(Parser &$parser, PPFrame $frame, array $args)
{
$this->frame = $frame;
$this->args =& $args;
if (isset($args[0])) {
# args[0] is a poll address
$this->pollAddr = trim($this->frame->expand($this->args[0]));
$this->pollStore = qp_PollStore::newFromAddr($this->pollAddr);
if ($this->pollStore instanceof qp_PollStore && $this->pollStore->pid !== null) {
$this->error_message = 'missing_question_id';
if (isset($args[1])) {
# args[1] is question_id
$qdata = $this->getQuestionData(trim($frame->expand($args[1])));
if ($qdata instanceof qp_QuestionData) {
$this->error_message = 'missing_proposal_id';
if (isset($args[2])) {
# get poll's proposal choice
$this->proposal_id = trim($frame->expand($args[2]));
$this->error_message = 'invalid_proposal_id';
if (preg_match(qp_Setup::PREG_NON_NEGATIVE_INT4_MATCH, $this->proposal_id)) {
$this->defaultProposalText = isset($args[3]) ? trim($frame->expand($args[3])) : '';
$this->proposal_id = intval($this->proposal_id);
$this->error_message = 'missing_proposal_id';
if (array_key_exists($this->proposal_id, $qdata->ProposalText)) {
return $this->qpuserchoiceValidResult($qdata);
}
}
}
}
}
}
}
return '<strong class="error">qpuserchoice: ' . wfMsgHTML('qp_func_' . $this->error_message, qp_Setup::specialchars($this->pollAddr), qp_Setup::specialchars($this->question_id), qp_Setup::specialchars($this->proposal_id)) . '</strong>';
}
/**
* Prepares qp_PollStore object
* @return boolean true on success ($this->pollStore has been created successfully)
* string error message on failure
*/
function getPollStore() {
$this->pollStore = qp_PollStore::newFromAddr( $this->pollAddr );
if ( !( $this->pollStore instanceof qp_PollStore ) || $this->pollStore->pid === null ) {
return self::fatalErrorQuote( 'qp_error_no_such_poll', $this->pollAddr );
}
if ( !$this->pollStore->loadQuestions() ) {
$this->mState = "error";
return self::fatalErrorQuote( 'qp_error_no_stats', $this->pollAddr );
}
$this->pollStore->setLastUser( $this->username );
# do not check the result, because we may show results even if the user hasn't voted
$this->pollStore->loadUserAlreadyVoted();
return true;
}
/**
* Returns either scalar or associative array with structured interpretation
* of the specified poll for the current user
*
* @return scalar/array when success; null when there is no structured interpretation
*/
function qp_getStructuredInterpretation($poll_address)
{
$pollStore = qp_PollStore::newFromAddr($poll_address);
if (!$pollStore instanceof qp_PollStore || $pollStore->pid === null) {
return null;
}
$username = qp_Setup::getCurrUserName();
$pollStore->loadQuestions();
$pollStore->setLastUser($username);
if ($pollStore->interpResult->structured === '') {
return null;
}
return unserialize($pollStore->interpResult->structured);
}
private function checkDependance( $dependsOn, $nonVotedDepLink = false ) {
# check the headers for dependance to other polls
if ( $dependsOn === '' ) {
return true;
}
$depPollStore = qp_PollStore::newFromAddr( $dependsOn );
if ( $depPollStore instanceof qp_PollStore ) {
# process recursive dependance
$depTitle = $depPollStore->getTitle();
$depPollId = $depPollStore->mPollId;
$depLink = $this->view->link( $depTitle, $depTitle->getPrefixedText() . ' (' . $depPollStore->mPollId . ')' );
if ( $depPollStore->pid === null ) {
return self::fatalErrorNoQuote( 'qp_error_missed_dependance_poll', qp_Setup::specialchars( $this->mPollId ), $depLink, qp_Setup::specialchars( $depPollId ) );
}
if ( !$depPollStore->loadQuestions() ) {
return self::fatalErrorNoQuote( 'qp_error_vote_dependance_poll', $depLink );
}
$depPollStore->setLastUser( $this->username );
if ( $depPollStore->loadUserAlreadyVoted() ) {
# user already voted in current the poll in chain
if ( $depPollStore->dependsOn === '' ) {
if ( $nonVotedDepLink === false ) {
# there was no non-voted deplinks in the chain at some previous level of recursion
return true;
} else {
# there is an non-voted deplink in the chain at some previous level of recursion
return self::fatalErrorNoQuote( 'qp_error_vote_dependance_poll', $nonVotedDepLink );
}
} else {
return $this->checkDependance( $depPollStore->dependsOn, $nonVotedDepLink );
}
} else {
# user hasn't voted in current the poll in chain
if ( $depPollStore->dependsOn === '' ) {
# current element of chain is not voted and furthermore, doesn't depend on any other polls
return self::fatalErrorNoQuote( 'qp_error_vote_dependance_poll', $depLink );
} else {
# current element of chain is not voted, BUT it has it's own dependance
# so we will check for the most deeply nested poll which hasn't voted, yet
return $this->checkDependance( $depPollStore->dependsOn, $depLink );
}
}
} else {
# process poll address errors
switch ( $depPollStore ) {
case qp_Setup::ERROR_INVALID_ADDRESS :
return self::fatalErrorQuote( 'qp_error_invalid_dependance_value', $this->mPollId, $dependsOn );
case qp_Setup::ERROR_MISSED_TITLE :
$depSplit = self::getPrefixedPollAddress( $dependsOn );
if ( is_array( $depSplit ) ) {
list( $depTitleStr, $depPollId ) = $depSplit;
$depTitle = Title::newFromURL( $depTitleStr );
$depTitleStr = $depTitle->getPrefixedText();
$depLink = $this->view->link( $depTitle, $depTitleStr );
return self::fatalErrorNoQuote( 'qp_error_missed_dependance_title', qp_Setup::specialchars( $this->mPollId ), $depLink, qp_Setup::specialchars( $depPollId ) );
} else {
return self::fatalErrorQuote( 'qp_error_invalid_dependance_value', $this->mPollId, $dependsOn );
}
default :
throw new MWException( __METHOD__ . ' invalid dependance poll store found' );
}
}
}
