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

   1 /*!
   2  * JavaScript for Special:Preferences
   3  */
   4 ( function ( mw, $ ) {
   5         $( function () {
   6                 var $preftoc, $preferences, $fieldsets,
   7                         labelFunc,
   8                         $tzSelect, $tzTextbox, $localtimeHolder, servertime,
   9                         allowCloseWindow, notif;
  10
  11                 labelFunc = function () {
  12                         return this.id.replace( /^mw-prefsection/g, 'preftab' );
  13                 };
  14
  15                 $( '#prefsubmit' ).attr( 'id', 'prefcontrol' );
  16                 $preftoc = $( '#preftoc' );
  17                 $preferences = $( '#preferences' );
  18
  19                 $fieldsets = $preferences.children( 'fieldset' )
  20                         .attr( {
  21                                 role: 'tabpanel',
  22                                 'aria-labelledby': labelFunc
  23                         } );
  24                 $fieldsets.not( '#mw-prefsection-personal' )
  25                                 .hide()
  26                                 .attr( 'aria-hidden', 'true' );
  27
  28                 // T115692: The following is kept for backwards compatibility with older skins
  29                 $preferences.addClass( 'jsprefs' );
  30                 $fieldsets.addClass( 'prefsection' );
  31                 $fieldsets.children( 'legend' ).addClass( 'mainLegend' );
  32
  33                 // Make sure the accessibility tip is selectable so that screen reader users take notice,
  34                 // but hide it per default to reduce interface clutter. Also make sure it becomes visible
  35                 // when selected. Similar to jquery.mw-jump
  36                 $( '<div>' ).addClass( 'mw-navigation-hint' )
  37                         .text( mw.msg( 'prefs-tabs-navigation-hint' ) )
  38                         .attr( 'tabIndex', 0 )
  39                         .on( 'focus blur', function ( e ) {
  40                                 if ( e.type === 'blur' || e.type === 'focusout' ) {
  41                                         $( this ).css( 'height', '0' );
  42                                 } else {
  43                                         $( this ).css( 'height', 'auto' );
  44                                 }
  45                         } ).insertBefore( $preftoc );
  46
  47                 /**
  48                  * It uses document.getElementById for security reasons (HTML injections in $()).
  49                  *
  50                  * @ignore
  51                  * @param {string} name the name of a tab without the prefix ("mw-prefsection-")
  52                  * @param {string} [mode] A hash will be set according to the current
  53                  *  open section. Set mode 'noHash' to surpress this.
  54                  */
  55                 function switchPrefTab( name, mode ) {
  56                         var $tab, scrollTop;
  57                         // Handle hash manually to prevent jumping,
  58                         // therefore save and restore scrollTop to prevent jumping.
  59                         scrollTop = $( window ).scrollTop();
  60                         if ( mode !== 'noHash' ) {
  61                                 location.hash = '#mw-prefsection-' + name;
  62                         }
  63                         $( window ).scrollTop( scrollTop );
  64
  65                         $preftoc.find( 'li' ).removeClass( 'selected' )
  66                                 .find( 'a' ).attr( {
  67                                         tabIndex: -1,
  68                                         'aria-selected': 'false'
  69                                 } );
  70
  71                         $tab = $( document.getElementById( 'preftab-' + name ) );
  72                         if ( $tab.length ) {
  73                                 $tab.attr( {
  74                                         tabIndex: 0,
  75                                         'aria-selected': 'true'
  76                                 } )
  77                                 .focus()
  78                                         .parent().addClass( 'selected' );
  79
  80                                 $preferences.children( 'fieldset' ).hide().attr( 'aria-hidden', 'true' );
  81                                 $( document.getElementById( 'mw-prefsection-' + name ) ).show().attr( 'aria-hidden', 'false' );
  82                         }
  83                 }
  84
  85                 // Check for messageboxes (.successbox, .warningbox, .errorbox) to replace with notifications
  86                 if ( $( '.mw-preferences-messagebox' ).length ) {
  87                         // If there is a #mw-preferences-success box and javascript is enabled, use a slick notification instead!
  88                         if ( $( '#mw-preferences-success' ).length ) {
  89                                 notif = mw.notification.notify( mw.message( 'savedprefs' ), { autoHide: false } );
  90                                 // 'change' event not reliable!
  91                                 $( '#preftoc, .prefsection' ).one( 'change keydown mousedown', function () {
  92                                         if ( notif ) {
  93                                                 notif.close();
  94                                                 notif = null;
  95                                         }
  96                                 } );
  97
  98                                 // Remove now-unnecessary success=1 querystring to prevent reappearance of notification on reload
  99                                 if ( history.replaceState ) {
 100                                         history.replaceState( {}, document.title, location.href.replace( /&?success=1/, '' ) );
 101                                 }
 102                         }
 103                 }
 104
 105                 // Enable keyboard users to use left and right keys to switch tabs
 106                 $preftoc.on( 'keydown', function ( event ) {
 107                         var keyLeft = 37,
 108                                 keyRight = 39,
 109                                 $el;
 110
 111                         if ( event.keyCode === keyLeft ) {
 112                                 $el = $( '#preftoc li.selected' ).prev().find( 'a' );
 113                         } else if ( event.keyCode === keyRight ) {
 114                                 $el = $( '#preftoc li.selected' ).next().find( 'a' );
 115                         } else {
 116                                 return;
 117                         }
 118                         if ( $el.length > 0 ) {
 119                                 switchPrefTab( $el.attr( 'href' ).replace( '#mw-prefsection-', '' ) );
 120                         }
 121                 } );
 122
 123                 // Jump to correct section as indicated by the hash.
 124                 // This function is called onload and onhashchange.
 125                 function detectHash() {
 126                         var hash = location.hash,
 127                                 matchedElement, parentSection;
 128                         if ( hash.match( /^#mw-prefsection-[\w\-]+/ ) ) {
 129                                 switchPrefTab( hash.replace( '#mw-prefsection-', '' ) );
 130                         } else if ( hash.match( /^#mw-[\w\-]+/ ) ) {
 131                                 matchedElement = document.getElementById( hash.slice( 1 ) );
 132                                 parentSection = $( matchedElement ).closest( '.prefsection' );
 133                                 if ( parentSection.length ) {
 134                                         // Switch to proper tab and scroll to selected item.
 135                                         switchPrefTab( parentSection.attr( 'id' ).replace( 'mw-prefsection-', '' ), 'noHash' );
 136                                         matchedElement.scrollIntoView();
 137                                 }
 138                         }
 139                 }
 140
 141                 // In browsers that support the onhashchange event we will not bind click
 142                 // handlers and instead let the browser do the default behavior (clicking the
 143                 // <a href="#.."> will naturally set the hash, handled by onhashchange.
 144                 // But other things that change the hash will also be caught (e.g. using
 145                 // the Back and Forward browser navigation).
 146                 // Note the special check for IE "compatibility" mode.
 147                 if ( 'onhashchange' in window &&
 148                         ( document.documentMode === undefined || document.documentMode >= 8 )
 149                 ) {
 150                         $( window ).on( 'hashchange', function () {
 151                                 var hash = location.hash;
 152                                 if ( hash.match( /^#mw-[\w\-]+/ ) ) {
 153                                         detectHash();
 154                                 } else if ( hash === '' ) {
 155                                         switchPrefTab( 'personal', 'noHash' );
 156                                 }
 157                         } )
 158                         // Run the function immediately to select the proper tab on startup.
 159                         .trigger( 'hashchange' );
 160                 // In older browsers we'll bind a click handler as fallback.
 161                 // We must not have onhashchange *and* the click handlers, otherwise
 162                 // the click handler calls switchPrefTab() which sets the hash value,
 163                 // which triggers onhashchange and calls switchPrefTab() again.
 164                 } else {
 165                         $preftoc.on( 'click', 'li a', function ( e ) {
 166                                 switchPrefTab( $( this ).attr( 'href' ).replace( '#mw-prefsection-', '' ) );
 167                                 e.preventDefault();
 168                         } );
 169                         // If we've reloaded the page or followed an open-in-new-window,
 170                         // make the selected tab visible.
 171                         detectHash();
 172                 }
 173
 174                 // Timezone functions.
 175                 // Guesses Timezone from browser and updates fields onchange.
 176
 177                 $tzSelect = $( '#mw-input-wptimecorrection' );
 178                 $tzTextbox = $( '#mw-input-wptimecorrection-other' );
 179                 $localtimeHolder = $( '#wpLocalTime' );
 180                 servertime = parseInt( $( 'input[name="wpServerTime"]' ).val(), 10 );
 181
 182                 function minutesToHours( min ) {
 183                         var tzHour = Math.floor( Math.abs( min ) / 60 ),
 184                                 tzMin = Math.abs( min ) % 60,
 185                                 tzString = ( ( min >= 0 ) ? '' : '-' ) + ( ( tzHour < 10 ) ? '0' : '' ) + tzHour +
 186                                         ':' + ( ( tzMin < 10 ) ? '0' : '' ) + tzMin;
 187                         return tzString;
 188                 }
 189
 190                 function hoursToMinutes( hour ) {
 191                         var minutes,
 192                                 arr = hour.split( ':' );
 193
 194                         arr[ 0 ] = parseInt( arr[ 0 ], 10 );
 195
 196                         if ( arr.length === 1 ) {
 197                                 // Specification is of the form [-]XX
 198                                 minutes = arr[ 0 ] * 60;
 199                         } else {
 200                                 // Specification is of the form [-]XX:XX
 201                                 minutes = Math.abs( arr[ 0 ] ) * 60 + parseInt( arr[ 1 ], 10 );
 202                                 if ( arr[ 0 ] < 0 ) {
 203                                         minutes *= -1;
 204                                 }
 205                         }
 206                         // Gracefully handle non-numbers.
 207                         if ( isNaN( minutes ) ) {
 208                                 return 0;
 209                         } else {
 210                                 return minutes;
 211                         }
 212                 }
 213
 214                 function updateTimezoneSelection() {
 215                         var minuteDiff, localTime,
 216                                 type = $tzSelect.val();
 217
 218                         if ( type === 'guess' ) {
 219                                 // Get browser timezone & fill it in
 220                                 minuteDiff = -( new Date().getTimezoneOffset() );
 221                                 $tzTextbox.val( minutesToHours( minuteDiff ) );
 222                                 $tzSelect.val( 'other' );
 223                                 $tzTextbox.prop( 'disabled', false );
 224                         } else if ( type === 'other' ) {
 225                                 // Grab data from the textbox, parse it.
 226                                 minuteDiff = hoursToMinutes( $tzTextbox.val() );
 227                         } else {
 228                                 // Grab data from the $tzSelect value
 229                                 minuteDiff = parseInt( type.split( '|' )[ 1 ], 10 ) || 0;
 230                                 $tzTextbox.val( minutesToHours( minuteDiff ) );
 231                         }
 232
 233                         // Determine local time from server time and minutes difference, for display.
 234                         localTime = servertime + minuteDiff;
 235
 236                         // Bring time within the [0,1440) range.
 237                         localTime = ( ( localTime % 1440 ) + 1440 ) % 1440;
 238
 239                         $localtimeHolder.text( mw.language.convertNumber( minutesToHours( localTime ) ) );
 240                 }
 241
 242                 if ( $tzSelect.length && $tzTextbox.length ) {
 243                         $tzSelect.change( updateTimezoneSelection );
 244                         $tzTextbox.blur( updateTimezoneSelection );
 245                         updateTimezoneSelection();
 246                 }
 247
 248                 // Preserve the tab after saving the preferences
 249                 // Not using cookies, because their deletion results are inconsistent.
 250                 // Not using jStorage due to its enormous size (for this feature)
 251                 if ( window.sessionStorage ) {
 252                         if ( sessionStorage.getItem( 'mediawikiPreferencesTab' ) !== null ) {
 253                                 switchPrefTab( sessionStorage.getItem( 'mediawikiPreferencesTab' ), 'noHash' );
 254                         }
 255                         // Deleting the key, the tab states should be reset until we press Save
 256                         sessionStorage.removeItem( 'mediawikiPreferencesTab' );
 257
 258                         $( '#mw-prefs-form' ).submit( function () {
 259                                 var storageData = $( $preftoc ).find( 'li.selected a' ).attr( 'id' ).replace( 'preftab-', '' );
 260                                 sessionStorage.setItem( 'mediawikiPreferencesTab', storageData );
 261                         } );
 262                 }
 263
 264                 // Set up a message to notify users if they try to leave the page without
 265                 // saving.
 266                 $( '#mw-prefs-form' ).data( 'origdata', $( '#mw-prefs-form' ).serialize() );
 267                 allowCloseWindow = mw.confirmCloseWindow( {
 268                         test: function () {
 269                                 return $( '#mw-prefs-form' ).serialize() !== $( '#mw-prefs-form' ).data( 'origdata' );
 270                         },
 271
 272                         message: mw.msg( 'prefswarning-warning', mw.msg( 'saveprefs' ) ),
 273                         namespace: 'prefswarning'
 274                 } );
 275                 $( '#mw-prefs-form' ).submit( $.proxy( allowCloseWindow, 'release' ) );
 276                 $( '#mw-prefs-restoreprefs' ).click( $.proxy( allowCloseWindow, 'release' ) );
 277         } );
 278 }( mediaWiki, jQuery ) );