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/*
* HTMLForm enhancements:
* Enable the "Fill in from browser" option for the timezone selector
*/
function minutesToHours( min ) {
const 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;
}
mw.hook( 'htmlform.enhance' ).add( ( $root ) => {
mw.loader.using( 'mediawiki.widgets.SelectWithInputWidget', () => {
$root.find( '.mw-htmlform-timezone-field' ).each( function () {
// This is identical to OO.ui.infuse( ... ), but it makes the class name of the result known.
const timezoneWidget = mw.widgets.SelectWithInputWidget.static.infuse( $( this ) );
function maybeGuessTimezone() {
if ( timezoneWidget.dropdowninput.getValue() !== 'guess' ) {
return;
}
// If available, get the named time zone from the browser.
// (We also support older browsers where this API is not available.)
let timeZone;
try {
// This may return undefined
timeZone = Intl.DateTimeFormat().resolvedOptions().timeZone;
} catch ( err ) {
timeZone = null;
}
// Get the time offset
const minuteDiff = -( new Date().getTimezoneOffset() );
let newValue;
if ( timeZone ) {
// Try to save both time zone and offset
newValue = 'ZoneInfo|' + minuteDiff + '|' + timeZone;
timezoneWidget.dropdowninput.setValue( newValue );
}
if ( !timeZone || timezoneWidget.dropdowninput.getValue() !== newValue ) {
// No time zone, or it's unknown to MediaWiki. Save only offset
timezoneWidget.dropdowninput.setValue( 'other' );
timezoneWidget.textinput.setValue( minutesToHours( minuteDiff ) );
}
}
timezoneWidget.dropdowninput.on( 'change', maybeGuessTimezone );
maybeGuessTimezone();
} );
} );
} );