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

   1 /*!
   2  * JavaScript for Special:Preferences: Timezone field enhancements.
   3  */
   4 ( function ( mw, $ ) {
   5         $( function () {
   6                 var $tzSelect, $tzTextbox, timezoneWidget, $localtimeHolder, servertime,
   7                         oouiEnabled = $( '#mw-prefs-form' ).hasClass( 'mw-htmlform-ooui' );
   8
   9                 // Timezone functions.
  10                 // Guesses Timezone from browser and updates fields onchange.
  11
  12                 if ( oouiEnabled ) {
  13                         // This is identical to OO.ui.infuse( ... ), but it makes the class name of the result known.
  14                         try {
  15                                 timezoneWidget = mw.widgets.SelectWithInputWidget.static.infuse( $( '#wpTimeCorrection' ) );
  16                         } catch ( err ) {
  17                                 // This preference could theoretically be disabled ($wgHiddenPrefs)
  18                                 timezoneWidget = null;
  19                         }
  20                 } else {
  21                         $tzSelect = $( '#wpTimeCorrection' );
  22                         $tzTextbox = $( '#wpTimeCorrection-other' );
  23                 }
  24
  25                 $localtimeHolder = $( '#wpLocalTime' );
  26                 servertime = parseInt( $( 'input[name="wpServerTime"]' ).val(), 10 );
  27
  28                 function minutesToHours( min ) {
  29                         var tzHour = Math.floor( Math.abs( min ) / 60 ),
  30                                 tzMin = Math.abs( min ) % 60,
  31                                 tzString = ( ( min >= 0 ) ? '' : '-' ) + ( ( tzHour < 10 ) ? '0' : '' ) + tzHour +
  32                                         ':' + ( ( tzMin < 10 ) ? '0' : '' ) + tzMin;
  33                         return tzString;
  34                 }
  35
  36                 function hoursToMinutes( hour ) {
  37                         var minutes,
  38                                 arr = hour.split( ':' );
  39
  40                         arr[ 0 ] = parseInt( arr[ 0 ], 10 );
  41
  42                         if ( arr.length === 1 ) {
  43                                 // Specification is of the form [-]XX
  44                                 minutes = arr[ 0 ] * 60;
  45                         } else {
  46                                 // Specification is of the form [-]XX:XX
  47                                 minutes = Math.abs( arr[ 0 ] ) * 60 + parseInt( arr[ 1 ], 10 );
  48                                 if ( arr[ 0 ] < 0 ) {
  49                                         minutes *= -1;
  50                                 }
  51                         }
  52                         // Gracefully handle non-numbers.
  53                         if ( isNaN( minutes ) ) {
  54                                 return 0;
  55                         } else {
  56                                 return minutes;
  57                         }
  58                 }
  59
  60                 function updateTimezoneSelection() {
  61                         var minuteDiff, localTime,
  62                                 type = oouiEnabled ? timezoneWidget.dropdowninput.getValue() : $tzSelect.val(),
  63                                 val = oouiEnabled ? timezoneWidget.textinput.getValue() : $tzTextbox.val();
  64
  65                         if ( type === 'other' ) {
  66                                 // User specified time zone manually in <input>
  67                                 // Grab data from the textbox, parse it.
  68                                 minuteDiff = hoursToMinutes( val );
  69                         } else {
  70                                 // Time zone not manually specified by user
  71                                 if ( type === 'guess' ) {
  72                                         // Get browser timezone & fill it in
  73                                         minuteDiff = -( new Date().getTimezoneOffset() );
  74                                         if ( oouiEnabled ) {
  75                                                 timezoneWidget.textinput.setValue( minutesToHours( minuteDiff ) );
  76                                                 timezoneWidget.dropdowninput.setValue( 'other' );
  77                                         } else {
  78                                                 $tzTextbox.val( minutesToHours( minuteDiff ) );
  79                                                 $tzSelect.val( 'other' );
  80                                         }
  81                                 } else {
  82                                         // Grab data from the dropdown value
  83                                         minuteDiff = parseInt( type.split( '|' )[ 1 ], 10 ) || 0;
  84                                 }
  85                         }
  86
  87                         // Determine local time from server time and minutes difference, for display.
  88                         localTime = servertime + minuteDiff;
  89
  90                         // Bring time within the [0,1440) range.
  91                         localTime = ( ( localTime % 1440 ) + 1440 ) % 1440;
  92
  93                         $localtimeHolder.text( mw.language.convertNumber( minutesToHours( localTime ) ) );
  94                 }
  95
  96                 if ( oouiEnabled ) {
  97                         if ( timezoneWidget ) {
  98                                 timezoneWidget.dropdowninput.on( 'change', updateTimezoneSelection );
  99                                 timezoneWidget.textinput.on( 'change', updateTimezoneSelection );
 100                                 updateTimezoneSelection();
 101                         }
 102                 } else {
 103                         if ( $tzSelect.length && $tzTextbox.length ) {
 104                                 $tzSelect.change( updateTimezoneSelection );
 105                                 $tzTextbox.blur( updateTimezoneSelection );
 106                                 updateTimezoneSelection();
 107                         }
 108                 }
 109
 110         } );
 111 }( mediaWiki, jQuery ) );