resources/src/mediawiki.special/mediawiki.special.upload.js

   1 /**
   2  * JavaScript for Special:Upload
   3  *
   4  * @private
   5  * @class mw.special.upload
   6  * @singleton
   7  */
   8
   9 /* eslint-disable no-use-before-define */
  10 /* global Uint8Array */
  11
  12 ( function ( mw, $ ) {
  13         var uploadWarning, uploadLicense,
  14                 ajaxUploadDestCheck = mw.config.get( 'wgAjaxUploadDestCheck' ),
  15                 $license = $( '#wpLicense' );
  16
  17         window.wgUploadWarningObj = uploadWarning = {
  18                 responseCache: { '': '&nbsp;' },
  19                 nameToCheck: '',
  20                 typing: false,
  21                 delay: 500, // ms
  22                 timeoutID: false,
  23
  24                 keypress: function () {
  25                         if ( !ajaxUploadDestCheck ) {
  26                                 return;
  27                         }
  28
  29                         // Find file to upload
  30                         if ( !$( '#wpDestFile' ).length || !$( '#wpDestFile-warning' ).length ) {
  31                                 return;
  32                         }
  33
  34                         this.nameToCheck = $( '#wpDestFile' ).val();
  35
  36                         // Clear timer
  37                         if ( this.timeoutID ) {
  38                                 clearTimeout( this.timeoutID );
  39                         }
  40                         // Check response cache
  41                         if ( this.responseCache.hasOwnProperty( this.nameToCheck ) ) {
  42                                 this.setWarning( this.responseCache[ this.nameToCheck ] );
  43                                 return;
  44                         }
  45
  46                         this.timeoutID = setTimeout( function () {
  47                                 uploadWarning.timeout();
  48                         }, this.delay );
  49                 },
  50
  51                 checkNow: function ( fname ) {
  52                         if ( !ajaxUploadDestCheck ) {
  53                                 return;
  54                         }
  55                         if ( this.timeoutID ) {
  56                                 clearTimeout( this.timeoutID );
  57                         }
  58                         this.nameToCheck = fname;
  59                         this.timeout();
  60                 },
  61
  62                 timeout: function () {
  63                         var $spinnerDestCheck, title;
  64                         if ( !ajaxUploadDestCheck || this.nameToCheck === '' ) {
  65                                 return;
  66                         }
  67                         $spinnerDestCheck = $.createSpinner().insertAfter( '#wpDestFile' );
  68                         title = mw.Title.newFromText( this.nameToCheck, mw.config.get( 'wgNamespaceIds' ).file );
  69
  70                         ( new mw.Api() ).get( {
  71                                 formatversion: 2,
  72                                 action: 'query',
  73                                 // If title is empty, user input is invalid, the API call will produce details about why
  74                                 titles: title ? title.getPrefixedText() : this.nameToCheck,
  75                                 prop: 'imageinfo',
  76                                 iiprop: 'uploadwarning'
  77                         } ).done( function ( result ) {
  78                                 var
  79                                         resultOut = '',
  80                                         page = result.query.pages[ 0 ];
  81                                 if ( page.imageinfo ) {
  82                                         resultOut = page.imageinfo[ 0 ].html;
  83                                 } else if ( page.invalidreason ) {
  84                                         resultOut = mw.html.escape( page.invalidreason );
  85                                 }
  86                                 uploadWarning.processResult( resultOut, uploadWarning.nameToCheck );
  87                         } ).always( function () {
  88                                 $spinnerDestCheck.remove();
  89                         } );
  90                 },
  91
  92                 processResult: function ( result, fileName ) {
  93                         this.setWarning( result );
  94                         this.responseCache[ fileName ] = result;
  95                 },
  96
  97                 setWarning: function ( warning ) {
  98                         var $warningBox = $( '#wpDestFile-warning' ),
  99                                 $warning = $( $.parseHTML( warning ) );
 100                         mw.hook( 'wikipage.content' ).fire( $warning );
 101                         $warningBox.empty().append( $warning );
 102
 103                         // Set a value in the form indicating that the warning is acknowledged and
 104                         // doesn't need to be redisplayed post-upload
 105                         if ( !warning ) {
 106                                 $( '#wpDestFileWarningAck' ).val( '' );
 107                                 $warningBox.removeAttr( 'class' );
 108                         } else {
 109                                 $( '#wpDestFileWarningAck' ).val( '1' );
 110                                 $warningBox.attr( 'class', 'mw-destfile-warning' );
 111                         }
 112
 113                 }
 114         };
 115
 116         uploadLicense = {
 117
 118                 responseCache: { '': '' },
 119
 120                 fetchPreview: function ( license ) {
 121                         var $spinnerLicense;
 122                         if ( !mw.config.get( 'wgAjaxLicensePreview' ) ) {
 123                                 return;
 124                         }
 125                         if ( this.responseCache.hasOwnProperty( license ) ) {
 126                                 this.showPreview( this.responseCache[ license ] );
 127                                 return;
 128                         }
 129
 130                         $spinnerLicense = $.createSpinner().insertAfter( '#wpLicense' );
 131
 132                         ( new mw.Api() ).get( {
 133                                 formatversion: 2,
 134                                 action: 'parse',
 135                                 text: '{{' + license + '}}',
 136                                 title: $( '#wpDestFile' ).val() || 'File:Sample.jpg',
 137                                 prop: 'text',
 138                                 pst: true
 139                         } ).done( function ( result ) {
 140                                 uploadLicense.processResult( result, license );
 141                         } ).always( function () {
 142                                 $spinnerLicense.remove();
 143                         } );
 144                 },
 145
 146                 processResult: function ( result, license ) {
 147                         this.responseCache[ license ] = result.parse.text;
 148                         this.showPreview( this.responseCache[ license ] );
 149                 },
 150
 151                 showPreview: function ( preview ) {
 152                         $( '#mw-license-preview' ).html( preview );
 153                 }
 154
 155         };
 156
 157         $( function () {
 158                 // AJAX wpDestFile warnings
 159                 if ( ajaxUploadDestCheck ) {
 160                         // Insert an event handler that fetches upload warnings when wpDestFile
 161                         // has been changed
 162                         $( '#wpDestFile' ).change( function () {
 163                                 uploadWarning.checkNow( $( this ).val() );
 164                         } );
 165                         // Insert a row where the warnings will be displayed just below the
 166                         // wpDestFile row
 167                         $( '#mw-htmlform-description tbody' ).append(
 168                                 $( '<tr>' ).append(
 169                                         $( '<td>' )
 170                                                 .attr( 'id', 'wpDestFile-warning' )
 171                                                 .attr( 'colspan', 2 )
 172                                 )
 173                         );
 174                 }
 175
 176                 if ( mw.config.get( 'wgAjaxLicensePreview' ) && $license.length ) {
 177                         // License selector check
 178                         $license.change( function () {
 179                                 // We might show a preview
 180                                 uploadLicense.fetchPreview( $license.val() );
 181                         } );
 182
 183                         // License selector table row
 184                         $license.closest( 'tr' ).after(
 185                                 $( '<tr>' ).append(
 186                                         $( '<td>' ),
 187                                         $( '<td>' ).attr( 'id', 'mw-license-preview' )
 188                                 )
 189                         );
 190                 }
 191
 192                 // fillDestFile setup
 193                 $.each( mw.config.get( 'wgUploadSourceIds' ), function ( index, sourceId ) {
 194                         $( '#' + sourceId ).change( function () {
 195                                 var path, slash, backslash, fname;
 196                                 if ( !mw.config.get( 'wgUploadAutoFill' ) ) {
 197                                         return;
 198                                 }
 199                                 // Remove any previously flagged errors
 200                                 $( '#mw-upload-permitted' ).attr( 'class', '' );
 201                                 $( '#mw-upload-prohibited' ).attr( 'class', '' );
 202
 203                                 path = $( this ).val();
 204                                 // Find trailing part
 205                                 slash = path.lastIndexOf( '/' );
 206                                 backslash = path.lastIndexOf( '\\' );
 207                                 if ( slash === -1 && backslash === -1 ) {
 208                                         fname = path;
 209                                 } else if ( slash > backslash ) {
 210                                         fname = path.slice( slash + 1 );
 211                                 } else {
 212                                         fname = path.slice( backslash + 1 );
 213                                 }
 214
 215                                 // Clear the filename if it does not have a valid extension.
 216                                 // URLs are less likely to have a useful extension, so don't include them in the
 217                                 // extension check.
 218                                 if (
 219                                         mw.config.get( 'wgCheckFileExtensions' ) &&
 220                                         mw.config.get( 'wgStrictFileExtensions' ) &&
 221                                         mw.config.get( 'wgFileExtensions' ) &&
 222                                         $( this ).attr( 'id' ) !== 'wpUploadFileURL'
 223                                 ) {
 224                                         if (
 225                                                 fname.lastIndexOf( '.' ) === -1 ||
 226                                                 $.inArray(
 227                                                         fname.slice( fname.lastIndexOf( '.' ) + 1 ).toLowerCase(),
 228                                                         $.map( mw.config.get( 'wgFileExtensions' ), function ( element ) {
 229                                                                 return element.toLowerCase();
 230                                                         } )
 231                                                 ) === -1
 232                                         ) {
 233                                                 // Not a valid extension
 234                                                 // Clear the upload and set mw-upload-permitted to error
 235                                                 $( this ).val( '' );
 236                                                 $( '#mw-upload-permitted' ).attr( 'class', 'error' );
 237                                                 $( '#mw-upload-prohibited' ).attr( 'class', 'error' );
 238                                                 // Clear wpDestFile as well
 239                                                 $( '#wpDestFile' ).val( '' );
 240
 241                                                 return false;
 242                                         }
 243                                 }
 244
 245                                 // Replace spaces by underscores
 246                                 fname = fname.replace( / /g, '_' );
 247                                 // Capitalise first letter if needed
 248                                 if ( mw.config.get( 'wgCapitalizeUploads' ) ) {
 249                                         fname = fname[ 0 ].toUpperCase() + fname.slice( 1 );
 250                                 }
 251
 252                                 // Output result
 253                                 if ( $( '#wpDestFile' ).length ) {
 254                                         // Call decodeURIComponent function to remove possible URL-encoded characters
 255                                         // from the file name (T32390). Especially likely with upload-form-url.
 256                                         // decodeURIComponent can throw an exception if input is invalid utf-8
 257                                         try {
 258                                                 $( '#wpDestFile' ).val( decodeURIComponent( fname ) );
 259                                         } catch ( err ) {
 260                                                 $( '#wpDestFile' ).val( fname );
 261                                         }
 262                                         uploadWarning.checkNow( fname );
 263                                 }
 264                         } );
 265                 } );
 266         } );
 267
 268         // Add a preview to the upload form
 269         $( function () {
 270                 /**
 271                  * Is the FileAPI available with sufficient functionality?
 272                  *
 273                  * @return {boolean}
 274                  */
 275                 function hasFileAPI() {
 276                         return window.FileReader !== undefined;
 277                 }
 278
 279                 /**
 280                  * Check if this is a recognizable image type...
 281                  * Also excludes files over 10M to avoid going insane on memory usage.
 282                  *
 283                  * TODO: Is there a way we can ask the browser what's supported in `<img>`s?
 284                  *
 285                  * TODO: Put SVG back after working around Firefox 7 bug <https://phabricator.wikimedia.org/T33643>
 286                  *
 287                  * @param {File} file
 288                  * @return {boolean}
 289                  */
 290                 function fileIsPreviewable( file ) {
 291                         var known = [ 'image/png', 'image/gif', 'image/jpeg', 'image/svg+xml' ],
 292                                 tooHuge = 10 * 1024 * 1024;
 293                         return ( $.inArray( file.type, known ) !== -1 ) && file.size > 0 && file.size < tooHuge;
 294                 }
 295
 296                 /**
 297                  * Format a file size attractively.
 298                  *
 299                  * TODO: Match numeric formatting
 300                  *
 301                  * @param {number} s
 302                  * @return {string}
 303                  */
 304                 function prettySize( s ) {
 305                         var sizeMsgs = [ 'size-bytes', 'size-kilobytes', 'size-megabytes', 'size-gigabytes' ];
 306                         while ( s >= 1024 && sizeMsgs.length > 1 ) {
 307                                 s /= 1024;
 308                                 sizeMsgs = sizeMsgs.slice( 1 );
 309                         }
 310                         return mw.msg( sizeMsgs[ 0 ], Math.round( s ) );
 311                 }
 312
 313                 /**
 314                  * Show a thumbnail preview of PNG, JPEG, GIF, and SVG files prior to upload
 315                  * in browsers supporting HTML5 FileAPI.
 316                  *
 317                  * As of this writing, known good:
 318                  *
 319                  * - Firefox 3.6+
 320                  * - Chrome 7.something
 321                  *
 322                  * TODO: Check file size limits and warn of likely failures
 323                  *
 324                  * @param {File} file
 325                  */
 326                 function showPreview( file ) {
 327                         var $canvas,
 328                                 ctx,
 329                                 meta,
 330                                 previewSize = 180,
 331                                 $spinner = $.createSpinner( { size: 'small', type: 'block' } )
 332                                         .css( { width: previewSize, height: previewSize } ),
 333                                 thumb = mw.template.get( 'mediawiki.special.upload', 'thumbnail.html' ).render();
 334
 335                         thumb
 336                                 .find( '.filename' ).text( file.name ).end()
 337                                 .find( '.fileinfo' ).text( prettySize( file.size ) ).end()
 338                                 .find( '.thumbinner' ).prepend( $spinner ).end();
 339
 340                         $canvas = $( '<canvas>' ).attr( { width: previewSize, height: previewSize } );
 341                         ctx = $canvas[ 0 ].getContext( '2d' );
 342                         $( '#mw-htmlform-source' ).parent().prepend( thumb );
 343
 344                         fetchPreview( file, function ( dataURL ) {
 345                                 var img = new Image(),
 346                                         rotation = 0;
 347
 348                                 if ( meta && meta.tiff && meta.tiff.Orientation ) {
 349                                         rotation = ( 360 - ( function () {
 350                                                 // See includes/media/Bitmap.php
 351                                                 switch ( meta.tiff.Orientation.value ) {
 352                                                         case 8:
 353                                                                 return 90;
 354                                                         case 3:
 355                                                                 return 180;
 356                                                         case 6:
 357                                                                 return 270;
 358                                                         default:
 359                                                                 return 0;
 360                                                 }
 361                                         }() ) ) % 360;
 362                                 }
 363
 364                                 img.onload = function () {
 365                                         var info, width, height, x, y, dx, dy, logicalWidth, logicalHeight;
 366
 367                                         // Fit the image within the previewSizexpreviewSize box
 368                                         if ( img.width > img.height ) {
 369                                                 width = previewSize;
 370                                                 height = img.height / img.width * previewSize;
 371                                         } else {
 372                                                 height = previewSize;
 373                                                 width = img.width / img.height * previewSize;
 374                                         }
 375                                         // Determine the offset required to center the image
 376                                         dx = ( 180 - width ) / 2;
 377                                         dy = ( 180 - height ) / 2;
 378                                         switch ( rotation ) {
 379                                                 // If a rotation is applied, the direction of the axis
 380                                                 // changes as well. You can derive the values below by
 381                                                 // drawing on paper an axis system, rotate it and see
 382                                                 // where the positive axis direction is
 383                                                 case 0:
 384                                                         x = dx;
 385                                                         y = dy;
 386                                                         logicalWidth = img.width;
 387                                                         logicalHeight = img.height;
 388                                                         break;
 389                                                 case 90:
 390
 391                                                         x = dx;
 392                                                         y = dy - previewSize;
 393                                                         logicalWidth = img.height;
 394                                                         logicalHeight = img.width;
 395                                                         break;
 396                                                 case 180:
 397                                                         x = dx - previewSize;
 398                                                         y = dy - previewSize;
 399                                                         logicalWidth = img.width;
 400                                                         logicalHeight = img.height;
 401                                                         break;
 402                                                 case 270:
 403                                                         x = dx - previewSize;
 404                                                         y = dy;
 405                                                         logicalWidth = img.height;
 406                                                         logicalHeight = img.width;
 407                                                         break;
 408                                         }
 409
 410                                         ctx.clearRect( 0, 0, 180, 180 );
 411                                         ctx.rotate( rotation / 180 * Math.PI );
 412                                         ctx.drawImage( img, x, y, width, height );
 413                                         $spinner.replaceWith( $canvas );
 414
 415                                         // Image size
 416                                         info = mw.msg( 'widthheight', logicalWidth, logicalHeight ) +
 417                                                 ', ' + prettySize( file.size );
 418
 419                                         $( '#mw-upload-thumbnail .fileinfo' ).text( info );
 420                                 };
 421                                 img.onerror = function () {
 422                                         // Can happen for example for invalid SVG files
 423                                         clearPreview();
 424                                 };
 425                                 img.src = dataURL;
 426                         }, mw.config.get( 'wgFileCanRotate' ) ? function ( data ) {
 427                                 try {
 428                                         meta = mw.libs.jpegmeta( data, file.fileName );
 429                                         // eslint-disable-next-line no-underscore-dangle, camelcase
 430                                         meta._binary_data = null;
 431                                 } catch ( e ) {
 432                                         meta = null;
 433                                 }
 434                         } : null );
 435                 }
 436
 437                 /**
 438                  * Start loading a file into memory; when complete, pass it as a
 439                  * data URL to the callback function. If the callbackBinary is set it will
 440                  * first be read as binary and afterwards as data URL. Useful if you want
 441                  * to do preprocessing on the binary data first.
 442                  *
 443                  * @param {File} file
 444                  * @param {Function} callback
 445                  * @param {Function} callbackBinary
 446                  */
 447                 function fetchPreview( file, callback, callbackBinary ) {
 448                         var reader = new FileReader();
 449                         if ( callbackBinary && 'readAsBinaryString' in reader ) {
 450                                 // To fetch JPEG metadata we need a binary string; start there.
 451                                 // TODO
 452                                 reader.onload = function () {
 453                                         callbackBinary( reader.result );
 454
 455                                         // Now run back through the regular code path.
 456                                         fetchPreview( file, callback );
 457                                 };
 458                                 reader.readAsBinaryString( file );
 459                         } else if ( callbackBinary && 'readAsArrayBuffer' in reader ) {
 460                                 // readAsArrayBuffer replaces readAsBinaryString
 461                                 // However, our JPEG metadata library wants a string.
 462                                 // So, this is going to be an ugly conversion.
 463                                 reader.onload = function () {
 464                                         var i,
 465                                                 buffer = new Uint8Array( reader.result ),
 466                                                 string = '';
 467                                         for ( i = 0; i < buffer.byteLength; i++ ) {
 468                                                 string += String.fromCharCode( buffer[ i ] );
 469                                         }
 470                                         callbackBinary( string );
 471
 472                                         // Now run back through the regular code path.
 473                                         fetchPreview( file, callback );
 474                                 };
 475                                 reader.readAsArrayBuffer( file );
 476                         } else if ( 'URL' in window && 'createObjectURL' in window.URL ) {
 477                                 // Supported in Firefox 4.0 and above <https://developer.mozilla.org/en/DOM/window.URL.createObjectURL>
 478                                 // WebKit has it in a namespace for now but that's ok. ;)
 479                                 //
 480                                 // Lifetime of this URL is until document close, which is fine
 481                                 // for Special:Upload -- if this code gets used on longer-running
 482                                 // pages, add a revokeObjectURL() when it's no longer needed.
 483                                 //
 484                                 // Prefer this over readAsDataURL for Firefox 7 due to bug reading
 485                                 // some SVG files from data URIs <https://bugzilla.mozilla.org/show_bug.cgi?id=694165>
 486                                 callback( window.URL.createObjectURL( file ) );
 487                         } else {
 488                                 // This ends up decoding the file to base-64 and back again, which
 489                                 // feels horribly inefficient.
 490                                 reader.onload = function () {
 491                                         callback( reader.result );
 492                                 };
 493                                 reader.readAsDataURL( file );
 494                         }
 495                 }
 496
 497                 /**
 498                  * Clear the file upload preview area.
 499                  */
 500                 function clearPreview() {
 501                         $( '#mw-upload-thumbnail' ).remove();
 502                 }
 503
 504                 /**
 505                  * Check if the file does not exceed the maximum size
 506                  *
 507                  * @param {File} file
 508                  * @return {boolean}
 509                  */
 510                 function checkMaxUploadSize( file ) {
 511                         var maxSize, $error;
 512
 513                         function getMaxUploadSize( type ) {
 514                                 var sizes = mw.config.get( 'wgMaxUploadSize' );
 515
 516                                 if ( sizes[ type ] !== undefined ) {
 517                                         return sizes[ type ];
 518                                 }
 519                                 return sizes[ '*' ];
 520                         }
 521
 522                         $( '.mw-upload-source-error' ).remove();
 523
 524                         maxSize = getMaxUploadSize( 'file' );
 525                         if ( file.size > maxSize ) {
 526                                 $error = $( '<p class="error mw-upload-source-error" id="wpSourceTypeFile-error">' +
 527                                         mw.message( 'largefileserver', file.size, maxSize ).escaped() + '</p>' );
 528
 529                                 $( '#wpUploadFile' ).after( $error );
 530
 531                                 return false;
 532                         }
 533
 534                         return true;
 535                 }
 536
 537                 /* Initialization */
 538                 if ( hasFileAPI() ) {
 539                         // Update thumbnail when the file selection control is updated.
 540                         $( '#wpUploadFile' ).change( function () {
 541                                 var file;
 542                                 clearPreview();
 543                                 if ( this.files && this.files.length ) {
 544                                         // Note: would need to be updated to handle multiple files.
 545                                         file = this.files[ 0 ];
 546
 547                                         if ( !checkMaxUploadSize( file ) ) {
 548                                                 return;
 549                                         }
 550
 551                                         if ( fileIsPreviewable( file ) ) {
 552                                                 showPreview( file );
 553                                         }
 554                                 }
 555                         } );
 556                 }
 557         } );
 558
 559         // Disable all upload source fields except the selected one
 560         $( function () {
 561                 var $rows = $( '.mw-htmlform-field-UploadSourceField' );
 562
 563                 $rows.on( 'change', 'input[type="radio"]', function ( e ) {
 564                         var currentRow = e.delegateTarget;
 565
 566                         if ( !this.checked ) {
 567                                 return;
 568                         }
 569
 570                         $( '.mw-upload-source-error' ).remove();
 571
 572                         // Enable selected upload method
 573                         $( currentRow ).find( 'input' ).prop( 'disabled', false );
 574
 575                         // Disable inputs of other upload methods
 576                         // (except for the radio button to re-enable it)
 577                         $rows
 578                                 .not( currentRow )
 579                                 .find( 'input[type!="radio"]' )
 580                                 .prop( 'disabled', true );
 581                 } );
 582
 583                 // Set initial state
 584                 if ( !$( '#wpSourceTypeurl' ).prop( 'checked' ) ) {
 585                         $( '#wpUploadFileURL' ).prop( 'disabled', true );
 586                 }
 587         } );
 588
 589         $( function () {
 590                 // Prevent losing work
 591                 var allowCloseWindow,
 592                         $uploadForm = $( '#mw-upload-form' );
 593
 594                 if ( !mw.user.options.get( 'useeditwarning' ) ) {
 595                         // If the user doesn't want edit warnings, don't set things up.
 596                         return;
 597                 }
 598
 599                 $uploadForm.data( 'origtext', $uploadForm.serialize() );
 600
 601                 allowCloseWindow = mw.confirmCloseWindow( {
 602                         test: function () {
 603                                 return $( '#wpUploadFile' ).get( 0 ).files.length !== 0 ||
 604                                         $uploadForm.data( 'origtext' ) !== $uploadForm.serialize();
 605                         },
 606
 607                         message: mw.msg( 'editwarning-warning' ),
 608                         namespace: 'uploadwarning'
 609                 } );
 610
 611                 $uploadForm.submit( function () {
 612                         allowCloseWindow.release();
 613                 } );
 614         } );
 615
 616         // Add tabindex to mw-editTools
 617         $( function () {
 618                 // Function to change tabindex for all links within mw-editTools
 619                 function setEditTabindex( $val ) {
 620                         $( '.mw-editTools' ).find( 'a' ).each( function () {
 621                                 $( this ).attr( 'tabindex', $val );
 622                         } );
 623                 }
 624
 625                 // Change tabindex to 0 if user pressed spaced or enter while focused
 626                 $( '.mw-editTools' ).on( 'keypress', function ( e ) {
 627                         // Don't continue if pressed key was not enter or spacebar
 628                         if ( e.which !== 13 && e.which !== 32 ) {
 629                                 return;
 630                         }
 631
 632                         // Change tabindex only when main div has focus
 633                         if ( $( this ).is( ':focus' ) ) {
 634                                 $( this ).find( 'a' ).first().focus();
 635                                 setEditTabindex( '0' );
 636                         }
 637                 } );
 638
 639                 // Reset tabindex for elements when user focused out mw-editTools
 640                 $( '.mw-editTools' ).on( 'focusout', function ( e ) {
 641                         // Don't continue if relatedTarget is within mw-editTools
 642                         if ( e.relatedTarget !== null && $( e.relatedTarget ).closest( '.mw-editTools' ).length > 0 ) {
 643                                 return;
 644                         }
 645
 646                         // Reset tabindex back to -1
 647                         setEditTabindex( '-1' );
 648                 } );
 649
 650                 // Set initial tabindex for mw-editTools to 0 and to -1 for all links
 651                 $( '.mw-editTools' ).attr( 'tabindex', '0' );
 652                 setEditTabindex( '-1' );
 653         } );
 654 }( mediaWiki, jQuery ) );