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/*!
* JavaScript for Special:Preferences: Timezone field enhancements.
*/
( function ( mw, $ ) {
$( function () {
var
$tzSelect, $tzTextbox, $localtimeHolder, servertime;
// Timezone functions.
// Guesses Timezone from browser and updates fields onchange.
$tzSelect = $( '#mw-input-wptimecorrection' );
$tzTextbox = $( '#mw-input-wptimecorrection-other' );
$localtimeHolder = $( '#wpLocalTime' );
servertime = parseInt( $( 'input[name="wpServerTime"]' ).val(), 10 );
function minutesToHours( min ) {
var tzHour = Math.floor( Math.abs( min ) / 60 ),
tzMin = Math.abs( min ) % 60,
tzString = ( ( min >= 0 ) ? '' : '-' ) + ( ( tzHour < 10 ) ? '0' : '' ) + tzHour +
':' + ( ( tzMin < 10 ) ? '0' : '' ) + tzMin;
return tzString;
}
function hoursToMinutes( hour ) {
var minutes,
arr = hour.split( ':' );
arr[ 0 ] = parseInt( arr[ 0 ], 10 );
if ( arr.length === 1 ) {
// Specification is of the form [-]XX
minutes = arr[ 0 ] * 60;
} else {
// Specification is of the form [-]XX:XX
minutes = Math.abs( arr[ 0 ] ) * 60 + parseInt( arr[ 1 ], 10 );
if ( arr[ 0 ] < 0 ) {
minutes *= -1;
}
}
// Gracefully handle non-numbers.
if ( isNaN( minutes ) ) {
return 0;
} else {
return minutes;
}
}
function updateTimezoneSelection() {
var minuteDiff, localTime,
type = $tzSelect.val();
if ( type === 'other' ) {
// User specified time zone manually in <input>
// Grab data from the textbox, parse it.
minuteDiff = hoursToMinutes( $tzTextbox.val() );
} else {
// Time zone not manually specified by user
if ( type === 'guess' ) {
// Get browser timezone & fill it in
minuteDiff = -( new Date().getTimezoneOffset() );
$tzTextbox.val( minutesToHours( minuteDiff ) );
$tzSelect.val( 'other' );
} else {
// Grab data from the $tzSelect value
minuteDiff = parseInt( type.split( '|' )[ 1 ], 10 ) || 0;
}
}
// Determine local time from server time and minutes difference, for display.
localTime = servertime + minuteDiff;
// Bring time within the [0,1440) range.
localTime = ( ( localTime % 1440 ) + 1440 ) % 1440;
$localtimeHolder.text( mw.language.convertNumber( minutesToHours( localTime ) ) );
}
if ( $tzSelect.length && $tzTextbox.length ) {
$tzSelect.change( updateTimezoneSelection );
$tzTextbox.blur( updateTimezoneSelection );
updateTimezoneSelection();
}
} );
}( mediaWiki, jQuery ) );
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