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

   1 /*!
   2  * JavaScript for Special:Preferences
   3  */
   4 jQuery( function ( $ ) {
   5         var $preftoc, $preferences, $fieldsets, $legends,
   6                 hash, labelFunc,
   7                 $tzSelect, $tzTextbox, $localtimeHolder, servertime,
   8                 $checkBoxes, savedWindowOnBeforeUnload;
   9
  10         labelFunc = function () {
  11                 return this.id.replace( /^mw-prefsection/g, 'preftab' );
  12         };
  13
  14         $( '#prefsubmit' ).attr( 'id', 'prefcontrol' );
  15         $preftoc = $( '<ul id="preftoc"></ul>' )
  16                 .attr( 'role', 'tablist' );
  17         $preferences = $( '#preferences' )
  18                 .addClass( 'jsprefs' )
  19                 .before( $preftoc );
  20         $fieldsets = $preferences.children( 'fieldset' )
  21                 .hide()
  22                 .attr( {
  23                         role: 'tabpanel',
  24                         'aria-hidden': 'true',
  25                         'aria-labelledby': labelFunc
  26                 } )
  27                 .addClass( 'prefsection' );
  28         $legends = $fieldsets
  29                 .children( 'legend' )
  30                 .addClass( 'mainLegend' );
  31
  32         // Make sure the accessibility tip is selectable so that screen reader users take notice,
  33         // but hide it per default to reduce interface clutter. Also make sure it becomes visible
  34         // when selected. Similar to jquery.mw-jump
  35         $( '<div>' ).addClass( 'mw-navigation-hint' )
  36                 .text( mediaWiki.msg( 'prefs-tabs-navigation-hint' ) )
  37                 .attr( 'tabIndex', 0 )
  38                 .on( 'focus blur', function ( e ) {
  39                         if ( e.type === 'blur' || e.type === 'focusout' ) {
  40                                 $( this ).css( 'height', '0' );
  41                         } else {
  42                                 $( this ).css( 'height', 'auto' );
  43                         }
  44         } ).insertBefore( $preftoc );
  45
  46         /**
  47          * It uses document.getElementById for security reasons (HTML injections in $()).
  48          *
  49          * @ignore
  50          * @param String name: the name of a tab without the prefix ("mw-prefsection-")
  51          * @param String mode: [optional] A hash will be set according to the current
  52          *  open section. Set mode 'noHash' to surpress this.
  53          */
  54         function switchPrefTab( name, mode ) {
  55                 var $tab, scrollTop;
  56                 // Handle hash manually to prevent jumping,
  57                 // therefore save and restore scrollTop to prevent jumping.
  58                 scrollTop = $( window ).scrollTop();
  59                 if ( mode !== 'noHash' ) {
  60                         location.hash = '#mw-prefsection-' + name;
  61                 }
  62                 $( window ).scrollTop( scrollTop );
  63
  64                 $preftoc.find( 'li' ).removeClass( 'selected' )
  65                         .find( 'a' ).attr( {
  66                                 tabIndex: -1,
  67                                 'aria-selected': 'false'
  68                         } );
  69
  70                 $tab = $( document.getElementById( 'preftab-' + name ) );
  71                 if ( $tab.length ) {
  72                         $tab.attr( {
  73                                 tabIndex: 0,
  74                                 'aria-selected': 'true'
  75                         } )
  76                         .focus()
  77                                 .parent().addClass( 'selected' );
  78
  79                         $preferences.children( 'fieldset' ).hide().attr( 'aria-hidden', 'true' );
  80                         $( document.getElementById( 'mw-prefsection-' + name ) ).show().attr( 'aria-hidden', 'false' );
  81                 }
  82         }
  83
  84         // Populate the prefToc
  85         $legends.each( function ( i, legend ) {
  86                 var $legend = $( legend ),
  87                         ident, $li, $a;
  88                 if ( i === 0 ) {
  89                         $legend.parent().show();
  90                 }
  91                 ident = $legend.parent().attr( 'id' );
  92
  93                 $li = $( '<li>' )
  94                         .attr( 'role', 'presentation' )
  95                         .addClass( i === 0 ? 'selected' : '' );
  96                 $a = $( '<a>' )
  97                         .attr( {
  98                                 id: ident.replace( 'mw-prefsection', 'preftab' ),
  99                                 href: '#' + ident,
 100                                 role: 'tab',
 101                                 tabIndex: i === 0 ? 0 : -1,
 102                                 'aria-selected': i === 0 ? 'true' : 'false',
 103                                 'aria-controls': ident
 104                         } )
 105                         .text( $legend.text() );
 106                 $li.append( $a );
 107                 $preftoc.append( $li );
 108         } );
 109
 110         // Enable keyboard users to use left and right keys to switch tabs
 111         $preftoc.on( 'keydown', function ( event ) {
 112                 var keyLeft = 37,
 113                         keyRight = 39,
 114                         $el;
 115
 116                 if ( event.keyCode === keyLeft ) {
 117                         $el = $( '#preftoc li.selected' ).prev().find( 'a' );
 118                 } else if ( event.keyCode === keyRight ) {
 119                         $el = $( '#preftoc li.selected' ).next().find( 'a' );
 120                 } else {
 121                         return;
 122                 }
 123                 if ( $el.length > 0 ) {
 124                         switchPrefTab( $el.attr( 'href' ).replace( '#mw-prefsection-', '' ) );
 125                 }
 126         } );
 127
 128         // If we've reloaded the page or followed an open-in-new-window,
 129         // make the selected tab visible.
 130         hash = location.hash;
 131         if ( hash.match( /^#mw-prefsection-[\w\-]+/ ) ) {
 132                 switchPrefTab( hash.replace( '#mw-prefsection-', '' ) );
 133         }
 134
 135         // In browsers that support the onhashchange event we will not bind click
 136         // handlers and instead let the browser do the default behavior (clicking the
 137         // <a href="#.."> will naturally set the hash, handled by onhashchange.
 138         // But other things that change the hash will also be catched (e.g. using
 139         // the Back and Forward browser navigation).
 140         // Note the special check for IE "compatibility" mode.
 141         if ( 'onhashchange' in window &&
 142                 ( document.documentMode === undefined || document.documentMode >= 8 )
 143         ) {
 144                 $( window ).on( 'hashchange', function () {
 145                         var hash = location.hash;
 146                         if ( hash.match( /^#mw-prefsection-[\w\-]+/ ) ) {
 147                                 switchPrefTab( hash.replace( '#mw-prefsection-', '' ) );
 148                         } else if ( hash === '' ) {
 149                                 switchPrefTab( 'personal', 'noHash' );
 150                         }
 151                 } );
 152         // In older browsers we'll bind a click handler as fallback.
 153         // We must not have onhashchange *and* the click handlers, other wise
 154         // the click handler calls switchPrefTab() which sets the hash value,
 155         // which triggers onhashcange and calls switchPrefTab() again.
 156         } else {
 157                 $preftoc.on( 'click', 'li a', function ( e ) {
 158                         switchPrefTab( $( this ).attr( 'href' ).replace( '#mw-prefsection-', '' ) );
 159                         e.preventDefault();
 160                 } );
 161         }
 162
 163         // Timezone functions.
 164         // Guesses Timezone from browser and updates fields onchange.
 165
 166         $tzSelect = $( '#mw-input-wptimecorrection' );
 167         $tzTextbox = $( '#mw-input-wptimecorrection-other' );
 168         $localtimeHolder = $( '#wpLocalTime' );
 169         servertime = parseInt( $( 'input[name="wpServerTime"]' ).val(), 10 );
 170
 171         function minutesToHours( min ) {
 172                 var tzHour = Math.floor( Math.abs( min ) / 60 ),
 173                         tzMin = Math.abs( min ) % 60,
 174                         tzString = ( ( min >= 0 ) ? '' : '-' ) + ( ( tzHour < 10 ) ? '0' : '' ) + tzHour +
 175                                 ':' + ( ( tzMin < 10 ) ? '0' : '' ) + tzMin;
 176                 return tzString;
 177         }
 178
 179         function hoursToMinutes( hour ) {
 180                 var minutes,
 181                         arr = hour.split( ':' );
 182
 183                 arr[0] = parseInt( arr[0], 10 );
 184
 185                 if ( arr.length === 1 ) {
 186                         // Specification is of the form [-]XX
 187                         minutes = arr[0] * 60;
 188                 } else {
 189                         // Specification is of the form [-]XX:XX
 190                         minutes = Math.abs( arr[0] ) * 60 + parseInt( arr[1], 10 );
 191                         if ( arr[0] < 0 ) {
 192                                 minutes *= -1;
 193                         }
 194                 }
 195                 // Gracefully handle non-numbers.
 196                 if ( isNaN( minutes ) ) {
 197                         return 0;
 198                 } else {
 199                         return minutes;
 200                 }
 201         }
 202
 203         function updateTimezoneSelection() {
 204                 var minuteDiff, localTime,
 205                         type = $tzSelect.val();
 206
 207                 if ( type === 'guess' ) {
 208                         // Get browser timezone & fill it in
 209                         minuteDiff = -( new Date().getTimezoneOffset() );
 210                         $tzTextbox.val( minutesToHours( minuteDiff ) );
 211                         $tzSelect.val( 'other' );
 212                         $tzTextbox.prop( 'disabled', false );
 213                 } else if ( type === 'other' ) {
 214                         // Grab data from the textbox, parse it.
 215                         minuteDiff = hoursToMinutes( $tzTextbox.val() );
 216                 } else {
 217                         // Grab data from the $tzSelect value
 218                         minuteDiff = parseInt( type.split( '|' )[1], 10 ) || 0;
 219                         $tzTextbox.val( minutesToHours( minuteDiff ) );
 220                 }
 221
 222                 // Determine local time from server time and minutes difference, for display.
 223                 localTime = servertime + minuteDiff;
 224
 225                 // Bring time within the [0,1440) range.
 226                 while ( localTime < 0 ) {
 227                         localTime += 1440;
 228                 }
 229                 while ( localTime >= 1440 ) {
 230                         localTime -= 1440;
 231                 }
 232                 $localtimeHolder.text( mediaWiki.language.convertNumber( minutesToHours( localTime ) ) );
 233         }
 234
 235         if ( $tzSelect.length && $tzTextbox.length ) {
 236                 $tzSelect.change( updateTimezoneSelection );
 237                 $tzTextbox.blur( updateTimezoneSelection );
 238                 updateTimezoneSelection();
 239         }
 240
 241         // Preserve the tab after saving the preferences
 242         // Not using cookies, because their deletion results are inconsistent.
 243         // Not using jStorage due to its enormous size (for this feature)
 244         if ( window.sessionStorage ) {
 245                 if ( sessionStorage.getItem( 'mediawikiPreferencesTab' ) !== null ) {
 246                         switchPrefTab( sessionStorage.getItem( 'mediawikiPreferencesTab' ), 'noHash' );
 247                 }
 248                 // Deleting the key, the tab states should be reset until we press Save
 249                 sessionStorage.removeItem( 'mediawikiPreferencesTab' );
 250
 251                 $( '#mw-prefs-form' ).submit( function () {
 252                         var storageData = $( $preftoc ).find( 'li.selected a' ).attr( 'id' ).replace( 'preftab-', '' );
 253                         sessionStorage.setItem( 'mediawikiPreferencesTab', storageData );
 254                 } );
 255         }
 256
 257         // To disable all 'namespace' checkboxes in Search preferences
 258         // when 'Search in all namespaces' checkbox is ticked.
 259         $checkBoxes = $( '#mw-htmlform-advancedsearchoptions input[id^=mw-input-wpsearchnamespaces]' );
 260         if ( $( '#mw-input-wpsearcheverything' ).prop( 'checked' ) ) {
 261                 $checkBoxes.prop( 'disabled', true );
 262         }
 263         $( '#mw-input-wpsearcheverything' ).change( function () {
 264                 $checkBoxes.prop( 'disabled', $( this ).prop( 'checked' ) );
 265         } );
 266
 267         // Set up a message to notify users if they try to leave the page without
 268         // saving.
 269         $( '#mw-prefs-form' ).data( 'origdata', $( '#mw-prefs-form' ).serialize() );
 270         $( window )
 271                 .on( 'beforeunload.prefswarning', function () {
 272                         var retval;
 273
 274                         // Check if anything changed
 275                         if ( $( '#mw-prefs-form' ).serialize() !== $( '#mw-prefs-form' ).data( 'origdata' ) ) {
 276                                 // Return our message
 277                                 retval = mediaWiki.msg( 'prefswarning-warning', mediaWiki.msg( 'saveprefs' ) );
 278                         }
 279
 280                         // Unset the onbeforeunload handler so we don't break page caching in Firefox
 281                         savedWindowOnBeforeUnload = window.onbeforeunload;
 282                         window.onbeforeunload = null;
 283                         if ( retval !== undefined ) {
 284                                 // ...but if the user chooses not to leave the page, we need to rebind it
 285                                 setTimeout( function () {
 286                                         window.onbeforeunload = savedWindowOnBeforeUnload;
 287                                 }, 1 );
 288                                 return retval;
 289                         }
 290                 } )
 291                 .on( 'pageshow.prefswarning', function () {
 292                         // Re-add onbeforeunload handler
 293                         if ( !window.onbeforeunload ) {
 294                                 window.onbeforeunload = savedWindowOnBeforeUnload;
 295                         }
 296                 } );
 297         $( '#mw-prefs-form' ).submit( function () {
 298                 // Unbind our beforeunload handler
 299                 $( window ).off( '.prefswarning' );
 300         } );
 301         $( '#mw-prefs-restoreprefs' ).click( function () {
 302                 // Unbind our beforeunload handler
 303                 $( window ).off( '.prefswarning' );
 304         } );
 305 } );