resources/mediawiki.special/mediawiki.special.preferences.js

   1 /*
   2  * JavaScript for Special:Preferences
   3  */
   4 jQuery( document ).ready( function ( $ ) {
   5         var $preftoc, $preferences, $fieldsets, $legends,
   6                 hash,
   7                 $tzSelect, $tzTextbox, $localtimeHolder, servertime;
   8
   9         $( '#prefsubmit' ).attr( 'id', 'prefcontrol' );
  10
  11                 $preftoc = $('<ul id="preftoc"></ul>'),
  12                 $preferences = $( '#preferences' )
  13                         .addClass( 'jsprefs' )
  14                         .before( $preftoc ),
  15                 $fieldsets = $preferences.children( 'fieldset' )
  16                         .hide()
  17                         .addClass( 'prefsection' ),
  18                 $legends = $fieldsets
  19                         .children( 'legend' )
  20                         .addClass( 'mainLegend' );
  21
  22         /**
  23          * It uses document.getElementById for security reasons (html injections in
  24          * jQuery()).
  25          *
  26          * @param String name: the name of a tab without the prefix ("mw-prefsection-")
  27          * @param String mode: [optional] A hash will be set according to the current
  28          * open section. Set mode 'noHash' to surpress this.
  29          */
  30         function switchPrefTab( name, mode ) {
  31                 var $tab, scrollTop;
  32                 // Handle hash manually to prevent jumping,
  33                 // therefore save and restore scrollTop to prevent jumping.
  34                 scrollTop = $( window ).scrollTop();
  35                 if ( mode !== 'noHash' ) {
  36                         window.location.hash = '#mw-prefsection-' + name;
  37                 }
  38                 $( window ).scrollTop( scrollTop );
  39
  40                 $preftoc.find( 'li' ).removeClass( 'selected' );
  41                 $tab = $( document.getElementById( 'preftab-' + name ) );
  42                 if ( $tab.length ) {
  43                         $tab.parent().addClass( 'selected' );
  44                         $preferences.children( 'fieldset' ).hide();
  45                         $( document.getElementById( 'mw-prefsection-' + name ) ).show();
  46                 }
  47         }
  48
  49         // Populate the prefToc
  50         $legends.each( function ( i, legend ) {
  51                 var $legend = $(legend),
  52                         ident, $li, $a;
  53                 if ( i === 0 ) {
  54                         $legend.parent().show();
  55                 }
  56                 ident = $legend.parent().attr( 'id' );
  57
  58                 $li = $( '<li>' )
  59                         .addClass( i === 0 ? 'selected' : '' );
  60                 $a = $( '<a>' )
  61                         .attr( {
  62                                 id: ident.replace( 'mw-prefsection', 'preftab' ),
  63                                 href: '#' + ident
  64                         } )
  65                         .text( $legend.text() );
  66                 $li.append( $a );
  67                 $preftoc.append( $li );
  68         } );
  69
  70         // If we've reloaded the page or followed an open-in-new-window,
  71         // make the selected tab visible.
  72         hash = window.location.hash;
  73         if ( hash.match( /^#mw-prefsection-[\w\-]+/ ) ) {
  74                 switchPrefTab( hash.replace( '#mw-prefsection-' , '' ) );
  75         }
  76
  77         // In browsers that support the onhashchange event we will not bind click
  78         // handlers and instead let the browser do the default behavior (clicking the
  79         // <a href="#.."> will naturally set the hash, handled by onhashchange.
  80         // But other things that change the hash will also be catched (e.g. using
  81         // the Back and Forward browser navigation).
  82         if ( 'onhashchange' in window ) {
  83                 $(window).on( 'hashchange' , function () {
  84                         var hash = window.location.hash;
  85                         if ( hash.match( /^#mw-prefsection-[\w\-]+/ ) ) {
  86                                 switchPrefTab( hash.replace( '#mw-prefsection-', '' ) );
  87                         } else if ( hash === '' ) {
  88                                 switchPrefTab( 'personal', 'noHash' );
  89                         }
  90                 });
  91         // In older browsers we'll bind a click handler as fallback.
  92         // We must not have onhashchange *and* the click handlers, other wise
  93         // the click handler calls switchPrefTab() which sets the hash value,
  94         // which triggers onhashcange and calls switchPrefTab() again.
  95         } else {
  96                 $preftoc.on( 'click', 'li a', function ( e ) {
  97                         switchPrefTab( $( this ).attr( 'href' ).replace( '#mw-prefsection-', '' ) );
  98                         e.preventDefault();
  99                 });
 100         }
 101
 102         /**
 103         * Timezone functions.
 104         * Guesses Timezone from browser and updates fields onchange
 105         */
 106
 107         $tzSelect = $( '#mw-input-wptimecorrection' );
 108         $tzTextbox = $( '#mw-input-wptimecorrection-other' );
 109         $localtimeHolder = $( '#wpLocalTime' );
 110         servertime = parseInt( $( 'input[name="wpServerTime"]' ).val(), 10 );
 111
 112         function minutesToHours( min ) {
 113                 var tzHour = Math.floor( Math.abs( min ) / 60 ),
 114                         tzMin = Math.abs( min ) % 60,
 115                         tzString = ( ( min >= 0 ) ? '' : '-' ) + ( ( tzHour < 10 ) ? '0' : '' ) + tzHour +
 116                                 ':' + ( ( tzMin < 10 ) ? '0' : '' ) + tzMin;
 117                 return tzString;
 118         }
 119
 120         function hoursToMinutes( hour ) {
 121                 var minutes,
 122                         arr = hour.split( ':' );
 123
 124                 arr[0] = parseInt( arr[0], 10 );
 125
 126                 if ( arr.length === 1 ) {
 127                         // Specification is of the form [-]XX
 128                         minutes = arr[0] * 60;
 129                 } else {
 130                         // Specification is of the form [-]XX:XX
 131                         minutes = Math.abs( arr[0] ) * 60 + parseInt( arr[1], 10 );
 132                         if ( arr[0] < 0 ) {
 133                                 minutes *= -1;
 134                         }
 135                 }
 136                 // Gracefully handle non-numbers.
 137                 if ( isNaN( minutes ) ) {
 138                         return 0;
 139                 } else {
 140                         return minutes;
 141                 }
 142         }
 143
 144         function updateTimezoneSelection () {
 145                 var minuteDiff, localTime,
 146                         type = $tzSelect.val();
 147
 148                 if ( type === 'guess' ) {
 149                         // Get browser timezone & fill it in
 150                         minuteDiff = -( new Date().getTimezoneOffset() );
 151                         $tzTextbox.val( minutesToHours( minuteDiff ) );
 152                         $tzSelect.val( 'other' );
 153                         $tzTextbox.prop( 'disabled', false );
 154                 } else if ( type === 'other' ) {
 155                         // Grab data from the textbox, parse it.
 156                         minuteDiff = hoursToMinutes( $tzTextbox.val() );
 157                 } else {
 158                         // Grab data from the $tzSelect value
 159                         minuteDiff = parseInt( type.split( '|' )[1], 10 ) || 0;
 160                         $tzTextbox.val( minutesToHours( minuteDiff ) );
 161                 }
 162
 163                 // Determine local time from server time and minutes difference, for display.
 164                 localTime = servertime + minuteDiff;
 165
 166                 // Bring time within the [0,1440) range.
 167                 while ( localTime < 0 ) {
 168                         localTime += 1440;
 169                 }
 170                 while ( localTime >= 1440 ) {
 171                         localTime -= 1440;
 172                 }
 173                 $localtimeHolder.text( minutesToHours( localTime ) );
 174         }
 175
 176         if ( $tzSelect.length && $tzTextbox.length ) {
 177                 $tzSelect.change( updateTimezoneSelection );
 178                 $tzTextbox.blur( updateTimezoneSelection );
 179                 updateTimezoneSelection();
 180         }
 181 } );