wikimedia/mediawiki-extensions-AJAXPoll
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mediawiki-extensions-AJAXPoll/AJAXPoll_body.php

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<?php
/**
* AJAX Poll class
* Created by Dariusz Siedlecki, based on the work by Eric David.
* Licensed under the GFDL.
*
* @file
* @ingroup Extensions
* @author Dariusz Siedlecki <datrio@gmail.com>
* @author Jack Phoenix <jack@countervandalism.net>
* @author Thomas Gries
* @maintainer Thomas Gries
* @link http://www.mediawiki.org/wiki/Extension:AJAX_Poll Documentation
*/
class AJAXPoll {
/**
* Register <poll> tag with the parser
*
* @param $parser Object: instance of Parser (not necessarily $wgParser)
* @return Boolean: true
*/
static function onParserInit( $parser ) {
global $wgOut;
$parser->setHook( 'poll', array( __CLASS__, 'AJAXPollRender' ) );
$wgOut->addModules( 'ext.ajaxpoll' );
return true;
}
# The callback function for converting the input text to HTML output
static function AJAXPollRender( $input, $params = array(), Parser $parser ) {
global $wgUser, $wgOut, $wgTitle, $wgScriptPath, $wgUseAjax;
$parser->disableCache();
$parser->addTrackingCategory( 'ajaxpoll-tracking-category' );
if ( $wgUser->getName() == '' ) {
$user = wfGetIP();
} else {
$user = $wgUser->getName();
}
// ID of the poll
$id = strtoupper( md5( $input ) );
$par = new Parser();
$input = $par->parse( $input, $wgTitle, $wgOut->parserOptions() );
$input = trim( strip_tags( $input->getText() ) );
$lines = explode( "\n", trim( $input ) );
// compatibility for non-ajax requests - just in case
if ( !$wgUseAjax ) {
$responseId = "ajaxpoll-post-id";
$responseAnswer = "ajaxpoll-post-answer-$id";
if ( isset( $_POST[$responseId] ) && isset( $_POST[$responseAnswer] ) && $_POST[$responseId] == $id ) {
AJAXPoll::submitVote( $id, intval( $_POST[$responseAnswer] ) );
}
}
$dbw = wfGetDB( DB_MASTER );
$dbw->begin( __METHOD__ );
/**
* Register poll in the database
*/
$row = $dbw->selectRow(
array( 'ajaxpoll_info' ),
array( 'COUNT(poll_id) AS count' ),
array( 'poll_id' => $id ),
__METHOD__
);
if( empty( $row->count ) ) {
$dbw->insert(
'ajaxpoll_info',
array(
'poll_id' => $id,
'poll_txt' => $input,
'poll_date' => wfTimestampNow(),
),
__METHOD__
);
}
$dbw->commit( __METHOD__ );
switch( $lines[0] ) {
case 'STATS':
$retVal = AJAXPoll::buildStats( $id, $user );
break;
default:
$retVal = '
<div id="ajaxpoll-container-' . $id . '">' . AJAXPoll::buildHTML( $id, $user, $lines ) . '</div>';
break;
}
return $retVal;
}
private static function buildStats( $id, $user ) {
$dbr = wfGetDB( DB_SLAVE );
$res = $dbr->select(
'ajaxpoll_vote',
array(
'COUNT(*)',
'COUNT(DISTINCT poll_id)',
'COUNT(DISTINCT poll_user)',
'TIMEDIFF(NOW(), MAX(poll_date))'
),
array(),
__METHOD__
);
$tab = $dbr->fetchRow( $res );
$clock = explode( ':', $tab[3] );
if ( $clock[0] == '00' && $clock[1] == '00' ) {
$x = $clock[2];
$y = 'second';
} elseif( $clock[0] == '00' ) {
$x = $clock[1];
$y = 'minute';
} else {
if ( $clock[0] < 24 ) {
$x = $clock[0];
$y = 'hour';
} else {
$x = floor( $hr / 24 );
$y = 'day';
}
}
$clockago = $x . ' ' . $y . ( $x > 1 ? 's' : '' );
$res = $dbr->select(
'ajaxpoll_vote',
'COUNT(*)',
array( 'DATE_SUB(CURDATE(), INTERVAL 2 DAY) <= poll_date' ),
__METHOD__
);
$tab2 = $dbr->fetchRow( $res );
return "There are $tab[1] polls and $tab[0] votes given by $tab[2] different people.<br />
The last vote has been given $clockago ago.<br/>
During the last 48 hours, $tab2[0] votes have been given.";
}
public static function submitVote( $id, $answer ) {
global $wgUser,$wgOut;
// echo "id: $id ans $answer<br/>";
$dbw = wfGetDB( DB_MASTER );
if ( $wgUser->getName() == '' ) {
$user = wfGetIP();
} else {
$user = $wgUser->getName();
}
if ( !$wgUser->isAllowed( 'ajaxpoll-vote' ) || $wgUser->isAllowed( 'bot' ) ) {
return AJAXPoll::buildHTML( $id, $user );
}
if ( $answer != 0 ) {
$answer = ++$answer;
$q = $dbw->select(
'ajaxpoll_vote',
'COUNT(*) AS count',
array(
'poll_id' => $id,
'poll_user' => $user
),
__METHOD__
);
$row = $dbw->fetchRow( $q );
if ( $row['count'] > 0 ) {
$updateQuery = $dbw->update(
'ajaxpoll_vote',
array(
'poll_answer' => $answer,
'poll_date' => wfTimestampNow()
),
array(
'poll_id' => $id,
'poll_user' => $user,
),
__METHOD__
);
$dbw->commit();
$pollContainerText = ( $updateQuery ) ? 'ajaxpoll-vote-update' : 'ajaxpoll-vote-error';
} else {
$insertQuery = $dbw->insert(
'ajaxpoll_vote',
array(
'poll_id' => $id,
'poll_user' => $user,
'poll_ip' => wfGetIP(),
'poll_answer' => $answer,
'poll_date' => wfTimestampNow()
),
__METHOD__
);
$dbw->commit();
$pollContainerText = ( $insertQuery ) ? 'ajaxpoll-vote-add' : 'ajaxpoll-vote-error';
}
} else { // revoking a vote
$deleteQuery = $dbw->delete(
'ajaxpoll_vote',
array(
'poll_id' => $id,
'poll_user' => $user,
),
__METHOD__
);
$dbw->commit();
$pollContainerText = ( $deleteQuery ) ? 'ajaxpoll-vote-revoked' : 'ajaxpoll-vote-error';
}
return AJAXPoll::buildHTML( $id, $user, '', $pollContainerText );
}
private static function buildHTML( $id, $user, $lines = '', $extra_from_ajax = '' ) {
global $wgTitle, $wgUser, $wgLang, $wgUseAjax;
$dbr = wfGetDB( DB_SLAVE );
$q = $dbr->select(
'ajaxpoll_info',
array( 'poll_txt', 'poll_date' ),
array( 'poll_id' => $id ),
__METHOD__
);
$row = $dbr->fetchRow( $q );
if ( empty( $lines ) ) {
$lines = explode( "\n", trim( $row['poll_txt'] ) );
}
$start_date = $row['poll_date'];
$q = $dbr->select(
'ajaxpoll_vote',
array( 'poll_answer', 'COUNT(*)' ),
array( 'poll_id' => $id ),
__METHOD__,
array( 'GROUP BY' => 'poll_answer' )
);
$poll_result = array();
while ( $row = $q->fetchRow() ) {
$poll_result[$row[0]] = $row[1];
}
$amountOfVotes = array_sum( $poll_result );
// Did we vote?
$q = $dbr->select(
'ajaxpoll_vote',
array( 'poll_answer', 'poll_date' ),
array(
'poll_id' => $id,
'poll_user' => $user
),
__METHOD__
);
if ( $row = $dbr->fetchRow( $q ) ) {
$ourLastVoteDate = wfMsg(
'ajaxpoll-your-vote',
$lines[$row[0] - 1],
$wgLang->timeanddate( wfTimestamp( TS_MW, $row[1] ), true /* adjust? */ )
);
}
if ( is_object( $wgTitle ) ) {
if( !empty( $extra_from_ajax ) ) {
$attributes = ' style="display:block;"';
$ajaxMessage = wfMsg( $extra_from_ajax );
} else {
$attributes = ' style="display:none;"';
$ajaxMessage = '';
}
// HTML output has to be on one line thanks to a MediaWiki bug
// @see https://bugzilla.wikimedia.org/show_bug.cgi?id=1319
$ret = '<script>var useAjax='. ( !empty($wgUseAjax) ? "true" : "false" ) . ';</script>
<div id="ajaxpoll-id-' . $id . '" class="ajaxpoll">
<div id="ajaxpoll-ajax-' . $id . '" class="ajaxpoll-ajax"' . $attributes . '>' . $ajaxMessage . '</div>
<div class="ajaxpoll-question">' . strip_tags( $lines[0] ) . '</div>';
// Different message depending on if the user has already voted or not, or is entitled to vote
$canRevoke = false;
if ( $wgUser->isAllowed( 'ajaxpoll-vote' ) ) {
if ( isset( $row[0] ) ) {
$message = $ourLastVoteDate;
$canRevoke = true;
$lines[] = wfMsg( 'ajaxpoll-revoke-vote' );
} else {
$message = wfMsg( 'ajaxpoll-no-vote' );
}
} else {
$message = wfMsg( 'ajaxpoll-vote-permission' );
}
$ret .= '<div class="ajaxpoll-misc">' . $message . '
</div>';
$ret .= '<form method="post" action="' . $wgTitle->getLocalURL() .
'" id="ajaxpoll-answer-id-' . $id . '"><input type="hidden" name="ajaxpoll-post-id" value="' . $id . '" />';
for ( $i = 1; $i < count( $lines ); $i++ ) {
$vote = !( $canRevoke && ( $i == count( $lines ) - 1 ) );
// answers are counted from 1 ... n
// last answer is pseudo-answer for "I want to revoke vote"
// and becomes answer number 0
$answer = ( $vote ) ? $i : 0;
$xid = $id . "-" . $answer;
if ( $amountOfVotes == 0 ) {
$percent = 0;
} else {
$percent = $wgLang->formatNum( round( ( isset( $poll_result[$i + 1] ) ? $poll_result[$i + 1] : 0 ) * 100 / $amountOfVotes, 2 ) );
}
$our = ( isset( $row[0] ) && ( $row[0] - 1 == $i ) );
// If AJAX is enabled, as it is by default in modern MWs, we can
// just use sajax library function here for that AJAX-y feel.
// If not, we'll have to submit the form old-school way...
if ( $wgUser->isAllowed( 'ajaxpoll-vote' ) ) {
// HTML output has to be on one line thanks to a MediaWiki bug
// @see https://bugzilla.wikimedia.org/show_bug.cgi?id=1319
if ( $vote ) {
$ret .= "
<div id='ajaxpoll-answer-$xid' class='ajaxpoll-answer' poll='$id' answer='$answer'><div class='ajaxpoll-answer-name'><label for='ajaxpoll-post-answer-$xid'><input type='radio' id='ajaxpoll-post-answer-$xid' name='ajaxpoll-post-answer-$id' value='" . $answer . "' " . ( $our ? 'checked=true ' : '' ) . "/>" . strip_tags( $lines[$i] ) .
"</label></div><div class='ajaxpoll-answer-vote" . ( $our ? ' ajaxpoll-our-vote' : '' ) ."'><span title='" . wfMsg( 'ajaxpoll-percent-votes', sprintf( $percent ) ) . "'>" . ( ( isset( $poll_result ) && !empty( $poll_result[$i + 1] ) ) ? $poll_result[$i + 1] : 0 ) . "</span><div style='width: " . $percent . "%;" . ( $percent == 0 ? ' border:0;' : '' ) . "'></div></div>
</div>
";
} else {
$ret .= "
<div id='ajaxpoll-answer-$xid' class='ajaxpoll-answer' poll='$id' answer='$answer'><div class='ajaxpoll-answer-name ajaxpoll-answer-name-revoke'><label for='ajaxpoll-post-answer-$xid'><input type='radio' id='ajaxpoll-post-answer-$xid' name='ajaxpoll-post-answer-$id' value='" . $answer . "' " . ( $our ? 'checked=true ' : '' ) . "/>" . strip_tags( $lines[$i] ) .
"</label></div>
</div>
";
}
} else {
$ret .= "
<div id='ajaxpoll-answer-" . $xid . "' class='ajaxpoll-answer' poll='$id' answer='$answer'><div class='ajaxpoll-answer-name'><label for='ajaxpoll-post-answer-" . $xid . "' onclick='$(\"#ajaxpoll-ajax-" . $xid . "\").html(\"" . wfMsg( 'ajaxpoll-vote-permission' ) . "\").css(\"display\",\"block\");'><input disabled='disabled' type='radio' id='ajaxpoll-post-answer-" . $xid . "' name='ajaxpoll-post-answer-" . $id . "' value='" . $answer . "'/>" . strip_tags( $lines[$i] ) .
"</label></div><div class='ajaxpoll-answer-vote" . ( $our ? ' ajaxpoll-our-vote' : '' ) ."'><span title='" . wfMsg( 'ajaxpoll-percent-votes', sprintf( $percent ) ) . "'>" . ( ( isset( $poll_result ) && !empty( $poll_result[$i + 1] ) ) ? $poll_result[$i + 1] : 0 ) . "</span><div style='width: " . $percent . "%;" . ( $percent == 0 ? ' border:0;' : '' ) . "'></div></div>
</div>
";
}
}
$ret .= '</form>';
// Display information about the poll (creation date, amount of votes)
$pollSummary = wfMsgExt(
'ajaxpoll-info',
'parsemag', // parse PLURAL
$amountOfVotes, // amount of votes
$wgLang->timeanddate( wfTimestamp( TS_MW, $start_date ), true /* adjust? */ )
);
$ret .= '<div id="ajaxpoll-info-' . $id . '" class="ajaxpoll-info">' . $pollSummary . '<div class="ajaxpoll-id-info">poll-id ' . $id . '</div></div></div>';
} else {
$ret = '';
}
return $ret;
}
public static function onLoadExtensionSchemaUpdates( $updater = null ) {
if ( $updater === null ) {
// no < 1.17 support
} else {
// >= 1.17 support
if ( $updater->tableExists( 'poll_info' ) ) {
# poll_info.poll_title field was dropped in AJAXPoll version 1.72
$updater->dropExtensionField(
'poll_info',
'poll_title',
dirname( __FILE__ ) . '/patches/drop-field--poll_info-poll_title.sql'
);
$updater->addExtensionTable(
'ajaxpoll_info',
dirname( __FILE__ ) . '/patches/rename-table--poll_info.sql'
);
} else {
$updater->addExtensionTable(
'ajaxpoll_info',
dirname( __FILE__ ) . '/patches/create-table--ajaxpoll_info.sql'
);
}
if ( $updater->tableExists( 'poll_vote' ) ) {
$updater->addExtensionTable(
'ajaxpoll_vote',
dirname( __FILE__ ) . '/patches/rename-table--poll_vote.sql'
);
} else {
$updater->addExtensionTable(
'ajaxpoll_vote',
dirname( __FILE__ ) . '/patches/create-table--ajaxpoll_vote.sql'
);
}
}
return true;
}
} /* class AJAXPoll */
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