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          *
  25          * @param String name: the name of a tab without the prefix ("mw-prefsection-")
  26          * @param String mode: [optional] A hash will be set according to the current
  27          * open section. Set mode 'noHash' to surpress this.
  28          */
  29         function switchPrefTab( name, mode ) {
  30                 var $tab, scrollTop;
  31                 // Handle hash manually to prevent jumping,
  32                 // therefore save and restore scrollTop to prevent jumping.
  33                 scrollTop = $( window ).scrollTop();
  34                 if ( mode !== 'noHash' ) {
  35                         window.location.hash = '#mw-prefsection-' + name;
  36                 }
  37                 $( window ).scrollTop( scrollTop );
  38
  39                 $preftoc.find( 'li' ).removeClass( 'selected' );
  40                 $tab = $( document.getElementById( 'preftab-' + name ) );
  41                 if ( $tab.length ) {
  42                         $tab.parent().addClass( 'selected' );
  43                         $preferences.children( 'fieldset' ).hide();
  44                         $( document.getElementById( 'mw-prefsection-' + name ) ).show();
  45                 }
  46         }
  47
  48         // Populate the prefToc
  49         $legends.each( function ( i, legend ) {
  50                 var $legend = $(legend),
  51                         ident, $li, $a;
  52                 if ( i === 0 ) {
  53                         $legend.parent().show();
  54                 }
  55                 ident = $legend.parent().attr( 'id' );
  56
  57                 $li = $( '<li>' )
  58                         .addClass( i === 0 ? 'selected' : '' );
  59                 $a = $( '<a>' )
  60                         .attr( {
  61                                 id: ident.replace( 'mw-prefsection', 'preftab' ),
  62                                 href: '#' + ident
  63                         } )
  64                         .text( $legend.text() );
  65                 $li.append( $a );
  66                 $preftoc.append( $li );
  67         } );
  68
  69         // If we've reloaded the page or followed an open-in-new-window,
  70         // make the selected tab visible.
  71         hash = window.location.hash;
  72         if ( hash.match( /^#mw-prefsection-[\w\-]+/ ) ) {
  73                 switchPrefTab( hash.replace( '#mw-prefsection-' , '' ) );
  74         }
  75
  76         // In browsers that support the onhashchange event we will not bind click
  77         // handlers and instead let the browser do the default behavior (clicking the
  78         // <a href="#.."> will naturally set the hash, handled by onhashchange.
  79         // But other things that change the hash will also be catched (e.g. using
  80         // the Back and Forward browser navigation).
  81         // Note the special check for IE "compatibility" mode.
  82         if ( 'onhashchange' in window &&
  83                 ( document.documentMode === undefined || document.documentMode >= 8 )
  84         ) {
  85                 $(window).on( 'hashchange' , function () {
  86                         var hash = window.location.hash;
  87                         if ( hash.match( /^#mw-prefsection-[\w\-]+/ ) ) {
  88                                 switchPrefTab( hash.replace( '#mw-prefsection-', '' ) );
  89                         } else if ( hash === '' ) {
  90                                 switchPrefTab( 'personal', 'noHash' );
  91                         }
  92                 });
  93         // In older browsers we'll bind a click handler as fallback.
  94         // We must not have onhashchange *and* the click handlers, other wise
  95         // the click handler calls switchPrefTab() which sets the hash value,
  96         // which triggers onhashcange and calls switchPrefTab() again.
  97         } else {
  98                 $preftoc.on( 'click', 'li a', function ( e ) {
  99                         switchPrefTab( $( this ).attr( 'href' ).replace( '#mw-prefsection-', '' ) );
 100                         e.preventDefault();
 101                 });
 102         }
 103
 104         /**
 105         * Timezone functions.
 106         * Guesses Timezone from browser and updates fields onchange
 107         */
 108
 109         $tzSelect = $( '#mw-input-wptimecorrection' );
 110         $tzTextbox = $( '#mw-input-wptimecorrection-other' );
 111         $localtimeHolder = $( '#wpLocalTime' );
 112         servertime = parseInt( $( 'input[name="wpServerTime"]' ).val(), 10 );
 113
 114         function minutesToHours( min ) {
 115                 var tzHour = Math.floor( Math.abs( min ) / 60 ),
 116                         tzMin = Math.abs( min ) % 60,
 117                         tzString = ( ( min >= 0 ) ? '' : '-' ) + ( ( tzHour < 10 ) ? '0' : '' ) + tzHour +
 118                                 ':' + ( ( tzMin < 10 ) ? '0' : '' ) + tzMin;
 119                 return tzString;
 120         }
 121
 122         function hoursToMinutes( hour ) {
 123                 var minutes,
 124                         arr = hour.split( ':' );
 125
 126                 arr[0] = parseInt( arr[0], 10 );
 127
 128                 if ( arr.length === 1 ) {
 129                         // Specification is of the form [-]XX
 130                         minutes = arr[0] * 60;
 131                 } else {
 132                         // Specification is of the form [-]XX:XX
 133                         minutes = Math.abs( arr[0] ) * 60 + parseInt( arr[1], 10 );
 134                         if ( arr[0] < 0 ) {
 135                                 minutes *= -1;
 136                         }
 137                 }
 138                 // Gracefully handle non-numbers.
 139                 if ( isNaN( minutes ) ) {
 140                         return 0;
 141                 } else {
 142                         return minutes;
 143                 }
 144         }
 145
 146         function updateTimezoneSelection () {
 147                 var minuteDiff, localTime,
 148                         type = $tzSelect.val();
 149
 150                 if ( type === 'guess' ) {
 151                         // Get browser timezone & fill it in
 152                         minuteDiff = -( new Date().getTimezoneOffset() );
 153                         $tzTextbox.val( minutesToHours( minuteDiff ) );
 154                         $tzSelect.val( 'other' );
 155                         $tzTextbox.prop( 'disabled', false );
 156                 } else if ( type === 'other' ) {
 157                         // Grab data from the textbox, parse it.
 158                         minuteDiff = hoursToMinutes( $tzTextbox.val() );
 159                 } else {
 160                         // Grab data from the $tzSelect value
 161                         minuteDiff = parseInt( type.split( '|' )[1], 10 ) || 0;
 162                         $tzTextbox.val( minutesToHours( minuteDiff ) );
 163                 }
 164
 165                 // Determine local time from server time and minutes difference, for display.
 166                 localTime = servertime + minuteDiff;
 167
 168                 // Bring time within the [0,1440) range.
 169                 while ( localTime < 0 ) {
 170                         localTime += 1440;
 171                 }
 172                 while ( localTime >= 1440 ) {
 173                         localTime -= 1440;
 174                 }
 175                 $localtimeHolder.text( minutesToHours( localTime ) );
 176         }
 177
 178         if ( $tzSelect.length && $tzTextbox.length ) {
 179                 $tzSelect.change( updateTimezoneSelection );
 180                 $tzTextbox.blur( updateTimezoneSelection );
 181                 updateTimezoneSelection();
 182         }
 183
 184         // Preserve the tab after saving the preferences
 185         // Not using cookies, because their deletion results are inconsistent.
 186         // Not using jStorage due to its enormous size (for this feature)
 187         if ( window.sessionStorage ) {
 188                 if ( sessionStorage.getItem( 'mediawikiPreferencesTab' ) !== null ) {
 189                         switchPrefTab( sessionStorage.getItem( 'mediawikiPreferencesTab' ), 'noHash' );
 190                 }
 191                 // Deleting the key, the tab states should be reset until we press Save
 192                 sessionStorage.removeItem( 'mediawikiPreferencesTab' );
 193
 194                 $( '#mw-prefs-form' ).submit( function () {
 195                         var storageData = $( $preftoc ).find( 'li.selected a' ).attr( 'id' ).replace( 'preftab-', '' );
 196                         sessionStorage.setItem( 'mediawikiPreferencesTab', storageData );
 197                 } );
 198         }
 199 } );