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 ( function ( mw, $ ) {
   9         /*jshint latedef:false */
  10         var uploadWarning, uploadLicense,
  11                 ajaxUploadDestCheck = mw.config.get( 'wgAjaxUploadDestCheck' ),
  12                 $license = $( '#wpLicense' );
  13
  14         window.wgUploadWarningObj = uploadWarning = {
  15                 responseCache: { '': '&nbsp;' },
  16                 nameToCheck: '',
  17                 typing: false,
  18                 delay: 500, // ms
  19                 timeoutID: false,
  20
  21                 keypress: function () {
  22                         if ( !ajaxUploadDestCheck ) {
  23                                 return;
  24                         }
  25
  26                         // Find file to upload
  27                         if ( !$( '#wpDestFile' ).length || !$( '#wpDestFile-warning' ).length ) {
  28                                 return;
  29                         }
  30
  31                         this.nameToCheck = $( '#wpDestFile' ).val();
  32
  33                         // Clear timer
  34                         if ( this.timeoutID ) {
  35                                 clearTimeout( this.timeoutID );
  36                         }
  37                         // Check response cache
  38                         if ( this.responseCache.hasOwnProperty( this.nameToCheck ) ) {
  39                                 this.setWarning( this.responseCache[ this.nameToCheck ] );
  40                                 return;
  41                         }
  42
  43                         this.timeoutID = setTimeout( function () {
  44                                 uploadWarning.timeout();
  45                         }, this.delay );
  46                 },
  47
  48                 checkNow: function ( fname ) {
  49                         if ( !ajaxUploadDestCheck ) {
  50                                 return;
  51                         }
  52                         if ( this.timeoutID ) {
  53                                 clearTimeout( this.timeoutID );
  54                         }
  55                         this.nameToCheck = fname;
  56                         this.timeout();
  57                 },
  58
  59                 timeout: function () {
  60                         var $spinnerDestCheck, title;
  61                         if ( !ajaxUploadDestCheck || this.nameToCheck === '' ) {
  62                                 return;
  63                         }
  64                         $spinnerDestCheck = $.createSpinner().insertAfter( '#wpDestFile' );
  65                         title = mw.Title.newFromText( this.nameToCheck, mw.config.get( 'wgNamespaceIds' ).file );
  66
  67                         ( new mw.Api() ).get( {
  68                                 formatversion: 2,
  69                                 action: 'query',
  70                                 // If title is empty, user input is invalid, the API call will produce details about why
  71                                 titles: title ? title.getPrefixedText() : this.nameToCheck,
  72                                 prop: 'imageinfo',
  73                                 iiprop: 'uploadwarning'
  74                         } ).done( function ( result ) {
  75                                 var
  76                                         resultOut = '',
  77                                         page = result.query.pages[ 0 ];
  78                                 if ( page.imageinfo ) {
  79                                         resultOut = page.imageinfo[ 0 ].html;
  80                                 } else if ( page.invalidreason ) {
  81                                         resultOut = mw.html.escape( page.invalidreason );
  82                                 }
  83                                 $spinnerDestCheck.remove();
  84                                 uploadWarning.processResult( resultOut, uploadWarning.nameToCheck );
  85                         } );
  86                 },
  87
  88                 processResult: function ( result, fileName ) {
  89                         this.setWarning( result );
  90                         this.responseCache[ fileName ] = result;
  91                 },
  92
  93                 setWarning: function ( warning ) {
  94                         var $warning = $( $.parseHTML( warning ) );
  95                         mw.hook( 'wikipage.content' ).fire( $warning );
  96                         $( '#wpDestFile-warning' ).empty().append( $warning );
  97
  98                         // Set a value in the form indicating that the warning is acknowledged and
  99                         // doesn't need to be redisplayed post-upload
 100                         if ( !warning ) {
 101                                 $( '#wpDestFileWarningAck' ).val( '' );
 102                         } else {
 103                                 $( '#wpDestFileWarningAck' ).val( '1' );
 104                         }
 105
 106                 }
 107         };
 108
 109         uploadLicense = {
 110
 111                 responseCache: { '': '' },
 112
 113                 fetchPreview: function ( license ) {
 114                         var $spinnerLicense;
 115                         if ( !mw.config.get( 'wgAjaxLicensePreview' ) ) {
 116                                 return;
 117                         }
 118                         if ( this.responseCache.hasOwnProperty( license ) ) {
 119                                 this.showPreview( this.responseCache[ license ] );
 120                                 return;
 121                         }
 122
 123                         $spinnerLicense = $.createSpinner().insertAfter( '#wpLicense' );
 124
 125                         ( new mw.Api() ).get( {
 126                                 formatversion: 2,
 127                                 action: 'parse',
 128                                 text: '{{' + license + '}}',
 129                                 title: $( '#wpDestFile' ).val() || 'File:Sample.jpg',
 130                                 prop: 'text',
 131                                 pst: true
 132                         } ).done( function ( result ) {
 133                                 $spinnerLicense.remove();
 134                                 uploadLicense.processResult( result, license );
 135                         } );
 136                 },
 137
 138                 processResult: function ( result, license ) {
 139                         this.responseCache[ license ] = result.parse.text;
 140                         this.showPreview( this.responseCache[ license ] );
 141                 },
 142
 143                 showPreview: function ( preview ) {
 144                         $( '#mw-license-preview' ).html( preview );
 145                 }
 146
 147         };
 148
 149         $( function () {
 150                 // AJAX wpDestFile warnings
 151                 if ( ajaxUploadDestCheck ) {
 152                         // Insert an event handler that fetches upload warnings when wpDestFile
 153                         // has been changed
 154                         $( '#wpDestFile' ).change( function () {
 155                                 uploadWarning.checkNow( $( this ).val() );
 156                         } );
 157                         // Insert a row where the warnings will be displayed just below the
 158                         // wpDestFile row
 159                         $( '#mw-htmlform-description tbody' ).append(
 160                                 $( '<tr>' ).append(
 161                                         $( '<td>' )
 162                                                 .attr( 'id', 'wpDestFile-warning' )
 163                                                 .attr( 'colspan', 2 )
 164                                 )
 165                         );
 166                 }
 167
 168                 if ( mw.config.get( 'wgAjaxLicensePreview' ) && $license.length ) {
 169                         // License selector check
 170                         $license.change( function () {
 171                                 // We might show a preview
 172                                 uploadLicense.fetchPreview( $license.val() );
 173                         } );
 174
 175                         // License selector table row
 176                         $license.closest( 'tr' ).after(
 177                                 $( '<tr>' ).append(
 178                                         $( '<td>' ),
 179                                         $( '<td>' ).attr( 'id', 'mw-license-preview' )
 180                                 )
 181                         );
 182                 }
 183
 184                 // fillDestFile setup
 185                 $.each( mw.config.get( 'wgUploadSourceIds' ), function ( index, sourceId ) {
 186                         $( '#' + sourceId ).change( function () {
 187                                 var path, slash, backslash, fname;
 188                                 if ( !mw.config.get( 'wgUploadAutoFill' ) ) {
 189                                         return;
 190                                 }
 191                                 // Remove any previously flagged errors
 192                                 $( '#mw-upload-permitted' ).attr( 'class', '' );
 193                                 $( '#mw-upload-prohibited' ).attr( 'class', '' );
 194
 195                                 path = $( this ).val();
 196                                 // Find trailing part
 197                                 slash = path.lastIndexOf( '/' );
 198                                 backslash = path.lastIndexOf( '\\' );
 199                                 if ( slash === -1 && backslash === -1 ) {
 200                                         fname = path;
 201                                 } else if ( slash > backslash ) {
 202                                         fname = path.slice( slash + 1 );
 203                                 } else {
 204                                         fname = path.slice( backslash + 1 );
 205                                 }
 206
 207                                 // Clear the filename if it does not have a valid extension.
 208                                 // URLs are less likely to have a useful extension, so don't include them in the
 209                                 // extension check.
 210                                 if (
 211                                         mw.config.get( 'wgCheckFileExtensions' ) &&
 212                                         mw.config.get( 'wgStrictFileExtensions' ) &&
 213                                         mw.config.get( 'wgFileExtensions' ) &&
 214                                         $( this ).attr( 'id' ) !== 'wpUploadFileURL'
 215                                 ) {
 216                                         if (
 217                                                 fname.lastIndexOf( '.' ) === -1 ||
 218                                                 $.inArray(
 219                                                         fname.slice( fname.lastIndexOf( '.' ) + 1 ).toLowerCase(),
 220                                                         $.map( mw.config.get( 'wgFileExtensions' ), function ( element ) {
 221                                                                 return element.toLowerCase();
 222                                                         } )
 223                                                 ) === -1
 224                                         ) {
 225                                                 // Not a valid extension
 226                                                 // Clear the upload and set mw-upload-permitted to error
 227                                                 $( this ).val( '' );
 228                                                 $( '#mw-upload-permitted' ).attr( 'class', 'error' );
 229                                                 $( '#mw-upload-prohibited' ).attr( 'class', 'error' );
 230                                                 // Clear wpDestFile as well
 231                                                 $( '#wpDestFile' ).val( '' );
 232
 233                                                 return false;
 234                                         }
 235                                 }
 236
 237                                 // Replace spaces by underscores
 238                                 fname = fname.replace( / /g, '_' );
 239                                 // Capitalise first letter if needed
 240                                 if ( mw.config.get( 'wgCapitalizeUploads' ) ) {
 241                                         fname = fname[ 0 ].toUpperCase() + fname.slice( 1 );
 242                                 }
 243
 244                                 // Output result
 245                                 if ( $( '#wpDestFile' ).length ) {
 246                                         // Call decodeURIComponent function to remove possible URL-encoded characters
 247                                         // from the file name (bug 30390). Especially likely with upload-form-url.
 248                                         // decodeURIComponent can throw an exception if input is invalid utf-8
 249                                         try {
 250                                                 $( '#wpDestFile' ).val( decodeURIComponent( fname ) );
 251                                         } catch ( err ) {
 252                                                 $( '#wpDestFile' ).val( fname );
 253                                         }
 254                                         uploadWarning.checkNow( fname );
 255                                 }
 256                         } );
 257                 } );
 258         } );
 259
 260         // Add a preview to the upload form
 261         $( function () {
 262                 /**
 263                  * Is the FileAPI available with sufficient functionality?
 264                  */
 265                 function hasFileAPI() {
 266                         return window.FileReader !== undefined;
 267                 }
 268
 269                 /**
 270                  * Check if this is a recognizable image type...
 271                  * Also excludes files over 10M to avoid going insane on memory usage.
 272                  *
 273                  * TODO: Is there a way we can ask the browser what's supported in `<img>`s?
 274                  *
 275                  * TODO: Put SVG back after working around Firefox 7 bug <https://phabricator.wikimedia.org/T33643>
 276                  *
 277                  * @param {File} file
 278                  * @return {boolean}
 279                  */
 280                 function fileIsPreviewable( file ) {
 281                         var known = [ 'image/png', 'image/gif', 'image/jpeg', 'image/svg+xml' ],
 282                                 tooHuge = 10 * 1024 * 1024;
 283                         return ( $.inArray( file.type, known ) !== -1 ) && file.size > 0 && file.size < tooHuge;
 284                 }
 285
 286                 /**
 287                  * Format a file size attractively.
 288                  *
 289                  * TODO: Match numeric formatting
 290                  *
 291                  * @param {number} s
 292                  * @return {string}
 293                  */
 294                 function prettySize( s ) {
 295                         var sizeMsgs = [ 'size-bytes', 'size-kilobytes', 'size-megabytes', 'size-gigabytes' ];
 296                         while ( s >= 1024 && sizeMsgs.length > 1 ) {
 297                                 s /= 1024;
 298                                 sizeMsgs = sizeMsgs.slice( 1 );
 299                         }
 300                         return mw.msg( sizeMsgs[ 0 ], Math.round( s ) );
 301                 }
 302
 303                 /**
 304                  * Show a thumbnail preview of PNG, JPEG, GIF, and SVG files prior to upload
 305                  * in browsers supporting HTML5 FileAPI.
 306                  *
 307                  * As of this writing, known good:
 308                  *
 309                  * - Firefox 3.6+
 310                  * - Chrome 7.something
 311                  *
 312                  * TODO: Check file size limits and warn of likely failures
 313                  *
 314                  * @param {File} file
 315                  */
 316                 function showPreview( file ) {
 317                         var $canvas,
 318                                 ctx,
 319                                 meta,
 320                                 previewSize = 180,
 321                                 $spinner = $.createSpinner( { size: 'small', type: 'block' } )
 322                                         .css( { width: previewSize, height: previewSize } ),
 323                                 thumb = mw.template.get( 'mediawiki.special.upload', 'thumbnail.html' ).render();
 324
 325                         thumb
 326                                 .find( '.filename' ).text( file.name ).end()
 327                                 .find( '.fileinfo' ).text( prettySize( file.size ) ).end()
 328                                 .find( '.thumbinner' ).prepend( $spinner ).end();
 329
 330                         $canvas = $( '<canvas>' ).attr( { width: previewSize, height: previewSize } );
 331                         ctx = $canvas[ 0 ].getContext( '2d' );
 332                         $( '#mw-htmlform-source' ).parent().prepend( thumb );
 333
 334                         fetchPreview( file, function ( dataURL ) {
 335                                 var img = new Image(),
 336                                         rotation = 0;
 337
 338                                 if ( meta && meta.tiff && meta.tiff.Orientation ) {
 339                                         rotation = ( 360 - ( function () {
 340                                                 // See includes/media/Bitmap.php
 341                                                 switch ( meta.tiff.Orientation.value ) {
 342                                                         case 8:
 343                                                                 return 90;
 344                                                         case 3:
 345                                                                 return 180;
 346                                                         case 6:
 347                                                                 return 270;
 348                                                         default:
 349                                                                 return 0;
 350                                                 }
 351                                         }() ) ) % 360;
 352                                 }
 353
 354                                 img.onload = function () {
 355                                         var info, width, height, x, y, dx, dy, logicalWidth, logicalHeight;
 356
 357                                         // Fit the image within the previewSizexpreviewSize box
 358                                         if ( img.width > img.height ) {
 359                                                 width = previewSize;
 360                                                 height = img.height / img.width * previewSize;
 361                                         } else {
 362                                                 height = previewSize;
 363                                                 width = img.width / img.height * previewSize;
 364                                         }
 365                                         // Determine the offset required to center the image
 366                                         dx = ( 180 - width ) / 2;
 367                                         dy = ( 180 - height ) / 2;
 368                                         switch ( rotation ) {
 369                                                 // If a rotation is applied, the direction of the axis
 370                                                 // changes as well. You can derive the values below by
 371                                                 // drawing on paper an axis system, rotate it and see
 372                                                 // where the positive axis direction is
 373                                                 case 0:
 374                                                         x = dx;
 375                                                         y = dy;
 376                                                         logicalWidth = img.width;
 377                                                         logicalHeight = img.height;
 378                                                         break;
 379                                                 case 90:
 380
 381                                                         x = dx;
 382                                                         y = dy - previewSize;
 383                                                         logicalWidth = img.height;
 384                                                         logicalHeight = img.width;
 385                                                         break;
 386                                                 case 180:
 387                                                         x = dx - previewSize;
 388                                                         y = dy - previewSize;
 389                                                         logicalWidth = img.width;
 390                                                         logicalHeight = img.height;
 391                                                         break;
 392                                                 case 270:
 393                                                         x = dx - previewSize;
 394                                                         y = dy;
 395                                                         logicalWidth = img.height;
 396                                                         logicalHeight = img.width;
 397                                                         break;
 398                                         }
 399
 400                                         ctx.clearRect( 0, 0, 180, 180 );
 401                                         ctx.rotate( rotation / 180 * Math.PI );
 402                                         ctx.drawImage( img, x, y, width, height );
 403                                         $spinner.replaceWith( $canvas );
 404
 405                                         // Image size
 406                                         info = mw.msg( 'widthheight', logicalWidth, logicalHeight ) +
 407                                                 ', ' + prettySize( file.size );
 408
 409                                         $( '#mw-upload-thumbnail .fileinfo' ).text( info );
 410                                 };
 411                                 img.onerror = function () {
 412                                         // Can happen for example for invalid SVG files
 413                                         clearPreview();
 414                                 };
 415                                 img.src = dataURL;
 416                         }, mw.config.get( 'wgFileCanRotate' ) ? function ( data ) {
 417                                 try {
 418                                         meta = mw.libs.jpegmeta( data, file.fileName );
 419                                         // jscs:disable requireCamelCaseOrUpperCaseIdentifiers, disallowDanglingUnderscores
 420                                         meta._binary_data = null;
 421                                         // jscs:enable
 422                                 } catch ( e ) {
 423                                         meta = null;
 424                                 }
 425                         } : null );
 426                 }
 427
 428                 /**
 429                  * Start loading a file into memory; when complete, pass it as a
 430                  * data URL to the callback function. If the callbackBinary is set it will
 431                  * first be read as binary and afterwards as data URL. Useful if you want
 432                  * to do preprocessing on the binary data first.
 433                  *
 434                  * @param {File} file
 435                  * @param {Function} callback
 436                  * @param {Function} callbackBinary
 437                  */
 438                 function fetchPreview( file, callback, callbackBinary ) {
 439                         var reader = new FileReader();
 440                         if ( callbackBinary && 'readAsBinaryString' in reader ) {
 441                                 // To fetch JPEG metadata we need a binary string; start there.
 442                                 // TODO
 443                                 reader.onload = function () {
 444                                         callbackBinary( reader.result );
 445
 446                                         // Now run back through the regular code path.
 447                                         fetchPreview( file, callback );
 448                                 };
 449                                 reader.readAsBinaryString( file );
 450                         } else if ( callbackBinary && 'readAsArrayBuffer' in reader ) {
 451                                 // readAsArrayBuffer replaces readAsBinaryString
 452                                 // However, our JPEG metadata library wants a string.
 453                                 // So, this is going to be an ugly conversion.
 454                                 reader.onload = function () {
 455                                         var i,
 456                                                 buffer = new Uint8Array( reader.result ),
 457                                                 string = '';
 458                                         for ( i = 0; i < buffer.byteLength; i++ ) {
 459                                                 string += String.fromCharCode( buffer[ i ] );
 460                                         }
 461                                         callbackBinary( string );
 462
 463                                         // Now run back through the regular code path.
 464                                         fetchPreview( file, callback );
 465                                 };
 466                                 reader.readAsArrayBuffer( file );
 467                         } else if ( 'URL' in window && 'createObjectURL' in window.URL ) {
 468                                 // Supported in Firefox 4.0 and above <https://developer.mozilla.org/en/DOM/window.URL.createObjectURL>
 469                                 // WebKit has it in a namespace for now but that's ok. ;)
 470                                 //
 471                                 // Lifetime of this URL is until document close, which is fine
 472                                 // for Special:Upload -- if this code gets used on longer-running
 473                                 // pages, add a revokeObjectURL() when it's no longer needed.
 474                                 //
 475                                 // Prefer this over readAsDataURL for Firefox 7 due to bug reading
 476                                 // some SVG files from data URIs <https://bugzilla.mozilla.org/show_bug.cgi?id=694165>
 477                                 callback( window.URL.createObjectURL( file ) );
 478                         } else {
 479                                 // This ends up decoding the file to base-64 and back again, which
 480                                 // feels horribly inefficient.
 481                                 reader.onload = function () {
 482                                         callback( reader.result );
 483                                 };
 484                                 reader.readAsDataURL( file );
 485                         }
 486                 }
 487
 488                 /**
 489                  * Clear the file upload preview area.
 490                  */
 491                 function clearPreview() {
 492                         $( '#mw-upload-thumbnail' ).remove();
 493                 }
 494
 495                 /**
 496                  * Check if the file does not exceed the maximum size
 497                  */
 498                 function checkMaxUploadSize( file ) {
 499                         var maxSize, $error;
 500
 501                         function getMaxUploadSize( type ) {
 502                                 var sizes = mw.config.get( 'wgMaxUploadSize' );
 503
 504                                 if ( sizes[ type ] !== undefined ) {
 505                                         return sizes[ type ];
 506                                 }
 507                                 return sizes[ '*' ];
 508                         }
 509
 510                         $( '.mw-upload-source-error' ).remove();
 511
 512                         maxSize = getMaxUploadSize( 'file' );
 513                         if ( file.size > maxSize ) {
 514                                 $error = $( '<p class="error mw-upload-source-error" id="wpSourceTypeFile-error">' +
 515                                         mw.message( 'largefileserver', file.size, maxSize ).escaped() + '</p>' );
 516
 517                                 $( '#wpUploadFile' ).after( $error );
 518
 519                                 return false;
 520                         }
 521
 522                         return true;
 523                 }
 524
 525                 /* Initialization */
 526                 if ( hasFileAPI() ) {
 527                         // Update thumbnail when the file selection control is updated.
 528                         $( '#wpUploadFile' ).change( function () {
 529                                 clearPreview();
 530                                 if ( this.files && this.files.length ) {
 531                                         // Note: would need to be updated to handle multiple files.
 532                                         var file = this.files[ 0 ];
 533
 534                                         if ( !checkMaxUploadSize( file ) ) {
 535                                                 return;
 536                                         }
 537
 538                                         if ( fileIsPreviewable( file ) ) {
 539                                                 showPreview( file );
 540                                         }
 541                                 }
 542                         } );
 543                 }
 544         } );
 545
 546         // Disable all upload source fields except the selected one
 547         $( function () {
 548                 var $rows = $( '.mw-htmlform-field-UploadSourceField' );
 549
 550                 $rows.on( 'change', 'input[type="radio"]', function ( e ) {
 551                         var currentRow = e.delegateTarget;
 552
 553                         if ( !this.checked ) {
 554                                 return;
 555                         }
 556
 557                         $( '.mw-upload-source-error' ).remove();
 558
 559                         // Enable selected upload method
 560                         $( currentRow ).find( 'input' ).prop( 'disabled', false );
 561
 562                         // Disable inputs of other upload methods
 563                         // (except for the radio button to re-enable it)
 564                         $rows
 565                                 .not( currentRow )
 566                                 .find( 'input[type!="radio"]' )
 567                                 .prop( 'disabled', true );
 568                 } );
 569
 570                 // Set initial state
 571                 if ( !$( '#wpSourceTypeurl' ).prop( 'checked' ) ) {
 572                         $( '#wpUploadFileURL' ).prop( 'disabled', true );
 573                 }
 574         } );
 575
 576         $( function () {
 577                 // Prevent losing work
 578                 var allowCloseWindow,
 579                         $uploadForm = $( '#mw-upload-form' );
 580
 581                 if ( !mw.user.options.get( 'useeditwarning' ) ) {
 582                         // If the user doesn't want edit warnings, don't set things up.
 583                         return;
 584                 }
 585
 586                 $uploadForm.data( 'origtext', $uploadForm.serialize() );
 587
 588                 allowCloseWindow = mw.confirmCloseWindow( {
 589                         test: function () {
 590                                 return $( '#wpUploadFile' ).get( 0 ).files.length !== 0 ||
 591                                         $uploadForm.data( 'origtext' ) !== $uploadForm.serialize();
 592                         },
 593
 594                         message: mw.msg( 'editwarning-warning' ),
 595                         namespace: 'uploadwarning'
 596                 } );
 597
 598                 $uploadForm.submit( function () {
 599                         allowCloseWindow.release();
 600                 } );
 601         } );
 602 }( mediaWiki, jQuery ) );