resources/src/mediawiki.special/mediawiki.special.preferences.timezone.js

   1 /*!
   2  * JavaScript for Special:Preferences: Timezone field enhancements.
   3  */
   4 ( function ( mw, $ ) {
   5         $( function () {
   6                 var
   7                         timezoneWidget, $localtimeHolder, servertime;
   8
   9                 // Timezone functions.
  10                 // Guesses Timezone from browser and updates fields onchange.
  11
  12                 // This is identical to OO.ui.infuse( ... ), but it makes the class name of the result known.
  13                 try {
  14                         timezoneWidget = mw.widgets.SelectWithInputWidget.static.infuse( $( '#wpTimeCorrection' ) );
  15                 } catch ( err ) {
  16                         // This preference could theoretically be disabled ($wgHiddenPrefs)
  17                         timezoneWidget = null;
  18                 }
  19
  20                 $localtimeHolder = $( '#wpLocalTime' );
  21                 servertime = parseInt( $( 'input[name="wpServerTime"]' ).val(), 10 );
  22
  23                 function minutesToHours( min ) {
  24                         var tzHour = Math.floor( Math.abs( min ) / 60 ),
  25                                 tzMin = Math.abs( min ) % 60,
  26                                 tzString = ( ( min >= 0 ) ? '' : '-' ) + ( ( tzHour < 10 ) ? '0' : '' ) + tzHour +
  27                                         ':' + ( ( tzMin < 10 ) ? '0' : '' ) + tzMin;
  28                         return tzString;
  29                 }
  30
  31                 function hoursToMinutes( hour ) {
  32                         var minutes,
  33                                 arr = hour.split( ':' );
  34
  35                         arr[ 0 ] = parseInt( arr[ 0 ], 10 );
  36
  37                         if ( arr.length === 1 ) {
  38                                 // Specification is of the form [-]XX
  39                                 minutes = arr[ 0 ] * 60;
  40                         } else {
  41                                 // Specification is of the form [-]XX:XX
  42                                 minutes = Math.abs( arr[ 0 ] ) * 60 + parseInt( arr[ 1 ], 10 );
  43                                 if ( arr[ 0 ] < 0 ) {
  44                                         minutes *= -1;
  45                                 }
  46                         }
  47                         // Gracefully handle non-numbers.
  48                         if ( isNaN( minutes ) ) {
  49                                 return 0;
  50                         } else {
  51                                 return minutes;
  52                         }
  53                 }
  54
  55                 function updateTimezoneSelection() {
  56                         var minuteDiff, localTime,
  57                                 type = timezoneWidget.dropdowninput.getValue();
  58
  59                         if ( type === 'other' ) {
  60                                 // User specified time zone manually in <input>
  61                                 // Grab data from the textbox, parse it.
  62                                 minuteDiff = hoursToMinutes( timezoneWidget.textinput.getValue() );
  63                         } else {
  64                                 // Time zone not manually specified by user
  65                                 if ( type === 'guess' ) {
  66                                         // Get browser timezone & fill it in
  67                                         minuteDiff = -( new Date().getTimezoneOffset() );
  68                                         timezoneWidget.textinput.setValue( minutesToHours( minuteDiff ) );
  69                                         timezoneWidget.dropdowninput.setValue( 'other' );
  70                                 } else {
  71                                         // Grab data from the dropdown value
  72                                         minuteDiff = parseInt( type.split( '|' )[ 1 ], 10 ) || 0;
  73                                 }
  74                         }
  75
  76                         // Determine local time from server time and minutes difference, for display.
  77                         localTime = servertime + minuteDiff;
  78
  79                         // Bring time within the [0,1440) range.
  80                         localTime = ( ( localTime % 1440 ) + 1440 ) % 1440;
  81
  82                         $localtimeHolder.text( mw.language.convertNumber( minutesToHours( localTime ) ) );
  83                 }
  84
  85                 if ( timezoneWidget ) {
  86                         timezoneWidget.dropdowninput.on( 'change', updateTimezoneSelection );
  87                         timezoneWidget.textinput.on( 'change', updateTimezoneSelection );
  88                         updateTimezoneSelection();
  89                 }
  90
  91         } );
  92 }( mediaWiki, jQuery ) );