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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Extension\SecurePoll\Talliers; |
| 4 | |
| 5 | use MediaWiki\Extension\SecurePoll\Context; |
| 6 | use MediaWiki\Extension\SecurePoll\Entities\Question; |
| 7 | |
| 8 | /** |
| 9 | * Tallier that supports choose-one, approval and range voting |
| 10 | */ |
| 11 | class PluralityTallier extends Tallier { |
| 12 | /** @var int[] */ |
| 13 | public $tally = []; |
| 14 | |
| 15 | /** |
| 16 | * @param Context $context |
| 17 | * @param ElectionTallier $electionTallier |
| 18 | * @param Question $question |
| 19 | */ |
| 20 | public function __construct( $context, $electionTallier, $question ) { |
| 21 | parent::__construct( $context, $electionTallier, $question ); |
| 22 | foreach ( $question->getOptions() as $option ) { |
| 23 | $this->tally[$option->getId()] = 0; |
| 24 | } |
| 25 | } |
| 26 | |
| 27 | /** |
| 28 | * @inheritDoc |
| 29 | */ |
| 30 | public function addVote( $scores ) { |
| 31 | foreach ( $scores as $oid => $score ) { |
| 32 | if ( !isset( $this->tally[$oid] ) ) { |
| 33 | wfDebug( __METHOD__ . ": unknown OID $oid\n" ); |
| 34 | |
| 35 | return false; |
| 36 | } |
| 37 | $this->tally[$oid] += $score; |
| 38 | } |
| 39 | |
| 40 | return true; |
| 41 | } |
| 42 | |
| 43 | /** |
| 44 | * @inheritDoc |
| 45 | * |
| 46 | */ |
| 47 | public function finishTally() { |
| 48 | // Sort the scores |
| 49 | arsort( $this->tally ); |
| 50 | } |
| 51 | |
| 52 | /** |
| 53 | * @inheritDoc |
| 54 | * |
| 55 | */ |
| 56 | public function loadJSONResult( $data ) { |
| 57 | $this->tally = $data; |
| 58 | } |
| 59 | |
| 60 | public function getJSONResult() { |
| 61 | return $this->tally; |
| 62 | } |
| 63 | |
| 64 | /** |
| 65 | * @inheritDoc |
| 66 | * |
| 67 | */ |
| 68 | public function getHtmlResult() { |
| 69 | // Show the results |
| 70 | $s = "<table class=\"securepoll-results\">\n"; |
| 71 | |
| 72 | foreach ( $this->tally as $oid => $rank ) { |
| 73 | $option = $this->optionsById[$oid]; |
| 74 | $s .= '<tr><td>' . $option->parseMessageInline( |
| 75 | 'text' |
| 76 | ) . "</td>\n" . '<td>' . $this->tally[$oid] . "</td>\n" . "</tr>\n"; |
| 77 | } |
| 78 | $s .= "</table>\n"; |
| 79 | |
| 80 | return $s; |
| 81 | } |
| 82 | |
| 83 | public function getTextResult() { |
| 84 | // Calculate column width |
| 85 | $width = 10; |
| 86 | foreach ( $this->tally as $oid => $rank ) { |
| 87 | $option = $this->optionsById[$oid]; |
| 88 | $width = max( $width, strlen( $option->getMessage( 'text' ) ) ); |
| 89 | } |
| 90 | if ( $width > 57 ) { |
| 91 | $width = 57; |
| 92 | } |
| 93 | |
| 94 | // Show the results |
| 95 | $qtext = $this->question->getMessage( 'text' ); |
| 96 | $s = ''; |
| 97 | if ( $qtext !== '' ) { |
| 98 | $s .= wordwrap( $qtext ) . "\n"; |
| 99 | } |
| 100 | foreach ( $this->tally as $oid => $rank ) { |
| 101 | $option = $this->optionsById[$oid]; |
| 102 | $otext = $option->getMessage( 'text' ); |
| 103 | if ( strlen( $otext ) > $width ) { |
| 104 | $otext = substr( $otext, 0, $width - 3 ) . '...'; |
| 105 | } else { |
| 106 | $otext = str_pad( $otext, $width ); |
| 107 | } |
| 108 | $s .= $otext . ' | ' . $this->tally[$option->getId()] . "\n"; |
| 109 | } |
| 110 | |
| 111 | return $s; |
| 112 | } |
| 113 | |
| 114 | public function getRanks() { |
| 115 | $ranks = []; |
| 116 | $currentRank = 1; |
| 117 | $oids = array_keys( $this->tally ); |
| 118 | $scores = array_values( $this->tally ); |
| 119 | foreach ( $oids as $i => $oid ) { |
| 120 | if ( $i > 0 && $scores[$i - 1] !== $scores[$i] ) { |
| 121 | $currentRank = $i + 1; |
| 122 | } |
| 123 | $ranks[$oid] = $currentRank; |
| 124 | } |
| 125 | |
| 126 | return $ranks; |
| 127 | } |
| 128 | } |