mediawiki-extensions-Math/Math.hooks.php

165 lines
4.1 KiB
PHP
Raw Normal View History

<?php
/**
* MediaWiki math extension
*
* (c) 2002-2011 various MediaWiki contributors
* GPLv2 license; info in main package.
*/
class MathHooks {
/**
* Set up $wgMathPath and $wgMathDirectory globals if they're not already
* set.
*/
static function setup() {
global $wgMathPath, $wgMathDirectory;
global $wgUploadPath, $wgUploadDirectory;
if ( $wgMathPath === false ) {
$wgMathPath = "{$wgUploadPath}/math";
}
if ( $wgMathDirectory === false ) {
$wgMathDirectory = "{$wgUploadDirectory}/math";
}
}
/**
* Register the <math> tag with the Parser.
*
* @param $parser Parser instance of Parser
* @return Boolean: true
*/
static function onParserFirstCallInit( $parser ) {
$parser->setHook( 'math', array( 'MathHooks', 'mathTagHook' ) );
return true;
}
/**
* Callback function for the <math> parser hook.
*
* @param $content
* @param $attributes
* @param $parser Parser
* @return
*/
static function mathTagHook( $content, $attributes, $parser ) {
global $wgContLang, $wgUseMathJax;
$renderedMath = MathRenderer::renderMath(
$content, $attributes, $parser->getOptions()
);
if ( $wgUseMathJax ) {
self::addMathJax( $parser );
}
$output = $renderedMath;
return $wgContLang->armourMath( $output );
}
/**
* Add the new math rendering options to Special:Preferences.
*
* @param $user Object: current User object
* @param $defaultPreferences Object: Preferences object
* @return Boolean: true
*/
static function onGetPreferences( $user, &$defaultPreferences ) {
$defaultPreferences['math'] = array(
'type' => 'radio',
'options' => array_flip( array_map( 'wfMsgHtml', self::getMathNames() ) ),
'label' => '&#160;',
'section' => 'rendering/math',
);
return true;
}
/**
* List of message keys for the various math output settings.
*
* @return array of strings
*/
private static function getMathNames() {
return array(
MW_MATH_PNG => 'mw_math_png',
MW_MATH_SOURCE => 'mw_math_source'
);
}
/**
* MaintenanceRefreshLinksInit handler; optimize settings for refreshLinks batch job.
*
* @param Maintenance $maint
* @return boolean hook return code
*/
static function onMaintenanceRefreshLinksInit( $maint ) {
global $wgUser;
# Don't generate TeX PNGs (lack of a sensible current directory causes errors anyway)
$wgUser->setOption( 'math', MW_MATH_SOURCE );
return true;
}
/**
* LoadExtensionSchemaUpdates handler; set up math table on install/upgrade.
*
* @param $updater DatabaseUpdater
* @return bool
*/
static function onLoadExtensionSchemaUpdates( $updater = null ) {
if( is_null( $updater ) ) {
throw new MWException( "Math extension is only necessary in 1.18 or above" );
}
$map = array(
'mysql' => 'math.sql',
'sqlite' => 'math.sql',
'postgres' => 'math.pg.sql',
'oracle' => 'math.oracle.sql',
'mssql' => 'math.mssql.sql',
'db2' => 'math.db2.sql',
);
$type = $updater->getDB()->getType();
if ( isset( $map[$type] ) ) {
$sql = dirname( __FILE__ ) . '/db/' . $map[$type];
$updater->addExtensionTable( 'math', $sql );
} else {
throw new MWException( "Math extension does not currently support $type database." );
}
return true;
}
/**
* Add 'math' table to the list of tables that need to be copied to
* temporary tables for parser tests to run.
*
* @param array $tables
* @return bool
*/
static function onParserTestTables( &$tables ) {
$tables[] = 'math';
return true;
}
/**
* Hack to fake a default $wgMathPath value so parser test output
* that renders to images doesn't vary by who runs it.
*
* @global string $wgMathPath
* @param Parser $parser
* @return bool
*/
static function onParserTestParser( &$parser ) {
global $wgMathPath;
$wgMathPath = '/images/math';
return true;
}
static function addMathJax( $parser ) {
global $wgMathJaxUrl;
//$script = Html::element( 'script', array( 'type' => 'text/x-mathjax-config' ), $config );
$html = Html::element( 'script', array( 'src' => $wgMathJaxUrl ) );
//$parser->getOutput()->addHeadItem( $html, 'mathjax' );
$parser->getOutput()->addModules( array( 'ext.math.mathjax.enabler' ) );
}
}