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         var uploadWarning, uploadLicense,
  10                 ajaxUploadDestCheck = mw.config.get( 'wgAjaxUploadDestCheck' ),
  11                 $license = $( '#wpLicense' );
  12
  13         window.wgUploadWarningObj = uploadWarning = {
  14                 responseCache: { '': '&nbsp;' },
  15                 nameToCheck: '',
  16                 typing: false,
  17                 delay: 500, // ms
  18                 timeoutID: false,
  19
  20                 keypress: function () {
  21                         if ( !ajaxUploadDestCheck ) {
  22                                 return;
  23                         }
  24
  25                         // Find file to upload
  26                         if ( !$( '#wpDestFile' ).length || !$( '#wpDestFile-warning' ).length ) {
  27                                 return;
  28                         }
  29
  30                         this.nameToCheck = $( '#wpDestFile' ).val();
  31
  32                         // Clear timer
  33                         if ( this.timeoutID ) {
  34                                 clearTimeout( this.timeoutID );
  35                         }
  36                         // Check response cache
  37                         if ( this.responseCache.hasOwnProperty( this.nameToCheck ) ) {
  38                                 this.setWarning( this.responseCache[this.nameToCheck] );
  39                                 return;
  40                         }
  41
  42                         this.timeoutID = setTimeout( function () {
  43                                 uploadWarning.timeout();
  44                         }, this.delay );
  45                 },
  46
  47                 checkNow: function ( fname ) {
  48                         if ( !ajaxUploadDestCheck ) {
  49                                 return;
  50                         }
  51                         if ( this.timeoutID ) {
  52                                 clearTimeout( this.timeoutID );
  53                         }
  54                         this.nameToCheck = fname;
  55                         this.timeout();
  56                 },
  57
  58                 timeout: function () {
  59                         var $spinnerDestCheck;
  60                         if ( !ajaxUploadDestCheck || this.nameToCheck === '' ) {
  61                                 return;
  62                         }
  63                         $spinnerDestCheck = $.createSpinner().insertAfter( '#wpDestFile' );
  64
  65                         ( new mw.Api() ).get( {
  66                                 action: 'query',
  67                                 titles: ( new mw.Title( this.nameToCheck, mw.config.get( 'wgNamespaceIds' ).file ) ).getPrefixedText(),
  68                                 prop: 'imageinfo',
  69                                 iiprop: 'uploadwarning',
  70                                 indexpageids: ''
  71                         } ).done( function ( result ) {
  72                                 var resultOut = '';
  73                                 if ( result.query ) {
  74                                         resultOut = result.query.pages[result.query.pageids[0]].imageinfo[0];
  75                                 }
  76                                 $spinnerDestCheck.remove();
  77                                 uploadWarning.processResult( resultOut, uploadWarning.nameToCheck );
  78                         } );
  79                 },
  80
  81                 processResult: function ( result, fileName ) {
  82                         this.setWarning( result.html );
  83                         this.responseCache[fileName] = result.html;
  84                 },
  85
  86                 setWarning: function ( warning ) {
  87                         $( '#wpDestFile-warning' ).html( warning );
  88
  89                         // Set a value in the form indicating that the warning is acknowledged and
  90                         // doesn't need to be redisplayed post-upload
  91                         if ( !warning ) {
  92                                 $( '#wpDestFileWarningAck' ).val( '' );
  93                         } else {
  94                                 $( '#wpDestFileWarningAck' ).val( '1' );
  95                         }
  96
  97                 }
  98         };
  99
 100         uploadLicense = {
 101
 102                 responseCache: { '': '' },
 103
 104                 fetchPreview: function ( license ) {
 105                         var $spinnerLicense;
 106                         if ( !mw.config.get( 'wgAjaxLicensePreview' ) ) {
 107                                 return;
 108                         }
 109                         if ( this.responseCache.hasOwnProperty( license ) ) {
 110                                 this.showPreview( this.responseCache[license] );
 111                                 return;
 112                         }
 113
 114                         $spinnerLicense = $.createSpinner().insertAfter( '#wpLicense' );
 115
 116                         ( new mw.Api() ).get( {
 117                                 action: 'parse',
 118                                 text: '{{' + license + '}}',
 119                                 title: $( '#wpDestFile' ).val() || 'File:Sample.jpg',
 120                                 prop: 'text',
 121                                 pst: ''
 122                         } ).done( function ( result ) {
 123                                 $spinnerLicense.remove();
 124                                 uploadLicense.processResult( result, license );
 125                         } );
 126                 },
 127
 128                 processResult: function ( result, license ) {
 129                         this.responseCache[license] = result.parse.text['*'];
 130                         this.showPreview( this.responseCache[license] );
 131                 },
 132
 133                 showPreview: function ( preview ) {
 134                         $( '#mw-license-preview' ).html( preview );
 135                 }
 136
 137         };
 138
 139         $( function () {
 140                 // Disable URL box if the URL copy upload source type is not selected
 141                 if ( !$( '#wpSourceTypeurl' ).prop( 'checked' ) ) {
 142                         $( '#wpUploadFileURL' ).prop( 'disabled', true );
 143                 }
 144
 145                 // AJAX wpDestFile warnings
 146                 if ( ajaxUploadDestCheck ) {
 147                         // Insert an event handler that fetches upload warnings when wpDestFile
 148                         // has been changed
 149                         $( '#wpDestFile' ).change( function () {
 150                                 uploadWarning.checkNow( $( this ).val() );
 151                         } );
 152                         // Insert a row where the warnings will be displayed just below the
 153                         // wpDestFile row
 154                         $( '#mw-htmlform-description tbody' ).append(
 155                                 $( '<tr>' ).append(
 156                                         $( '<td>' )
 157                                                 .attr( 'id', 'wpDestFile-warning' )
 158                                                 .attr( 'colspan', 2 )
 159                                 )
 160                         );
 161                 }
 162
 163                 if ( mw.config.get( 'wgAjaxLicensePreview' ) && $license.length ) {
 164                         // License selector check
 165                         $license.change( function () {
 166                                 // We might show a preview
 167                                 uploadLicense.fetchPreview( $license.val() );
 168                         } );
 169
 170                         // License selector table row
 171                         $license.closest( 'tr' ).after(
 172                                 $( '<tr>' ).append(
 173                                         $( '<td>' ),
 174                                         $( '<td>' ).attr( 'id', 'mw-license-preview' )
 175                                 )
 176                         );
 177                 }
 178
 179                 // fillDestFile setup
 180                 $.each( mw.config.get( 'wgUploadSourceIds' ), function ( index, sourceId ) {
 181                         $( '#' + sourceId ).change( function () {
 182                                 var path, slash, backslash, fname;
 183                                 if ( !mw.config.get( 'wgUploadAutoFill' ) ) {
 184                                         return;
 185                                 }
 186                                 // Remove any previously flagged errors
 187                                 $( '#mw-upload-permitted' ).attr( 'class', '' );
 188                                 $( '#mw-upload-prohibited' ).attr( 'class', '' );
 189
 190                                 path = $( this ).val();
 191                                 // Find trailing part
 192                                 slash = path.lastIndexOf( '/' );
 193                                 backslash = path.lastIndexOf( '\\' );
 194                                 if ( slash === -1 && backslash === -1 ) {
 195                                         fname = path;
 196                                 } else if ( slash > backslash ) {
 197                                         fname = path.slice( slash + 1 );
 198                                 } else {
 199                                         fname = path.slice( backslash + 1 );
 200                                 }
 201
 202                                 // Clear the filename if it does not have a valid extension.
 203                                 // URLs are less likely to have a useful extension, so don't include them in the
 204                                 // extension check.
 205                                 if (
 206                                         mw.config.get( 'wgCheckFileExtensions' ) &&
 207                                         mw.config.get( 'wgStrictFileExtensions' ) &&
 208                                         mw.config.get( 'wgFileExtensions' ) &&
 209                                         $( this ).attr( 'id' ) !== 'wpUploadFileURL'
 210                                 ) {
 211                                         if (
 212                                                 fname.lastIndexOf( '.' ) === -1 ||
 213                                                 $.inArray(
 214                                                         fname.slice( fname.lastIndexOf( '.' ) + 1 ).toLowerCase(),
 215                                                         $.map( mw.config.get( 'wgFileExtensions' ), function ( element ) {
 216                                                                 return element.toLowerCase();
 217                                                         } )
 218                                                 ) === -1
 219                                         ) {
 220                                                 // Not a valid extension
 221                                                 // Clear the upload and set mw-upload-permitted to error
 222                                                 $( this ).val( '' );
 223                                                 $( '#mw-upload-permitted' ).attr( 'class', 'error' );
 224                                                 $( '#mw-upload-prohibited' ).attr( 'class', 'error' );
 225                                                 // Clear wpDestFile as well
 226                                                 $( '#wpDestFile' ).val( '' );
 227
 228                                                 return false;
 229                                         }
 230                                 }
 231
 232                                 // Replace spaces by underscores
 233                                 fname = fname.replace( / /g, '_' );
 234                                 // Capitalise first letter if needed
 235                                 if ( mw.config.get( 'wgCapitalizeUploads' ) ) {
 236                                         fname = fname.charAt( 0 ).toUpperCase().concat( fname.slice( 1 ) );
 237                                 }
 238
 239                                 // Output result
 240                                 if ( $( '#wpDestFile' ).length ) {
 241                                         // Call decodeURIComponent function to remove possible URL-encoded characters
 242                                         // from the file name (bug 30390). Especially likely with upload-form-url.
 243                                         // decodeURIComponent can throw an exception if input is invalid utf-8
 244                                         try {
 245                                                 $( '#wpDestFile' ).val( decodeURIComponent( fname ) );
 246                                         } catch ( err ) {
 247                                                 $( '#wpDestFile' ).val( fname );
 248                                         }
 249                                         uploadWarning.checkNow( fname );
 250                                 }
 251                         } );
 252                 } );
 253         } );
 254
 255         // Add a preview to the upload form
 256         $( function () {
 257                 /**
 258                  * Is the FileAPI available with sufficient functionality?
 259                  */
 260                 function hasFileAPI() {
 261                         return window.FileReader !== undefined;
 262                 }
 263
 264                 /**
 265                  * Check if this is a recognizable image type...
 266                  * Also excludes files over 10M to avoid going insane on memory usage.
 267                  *
 268                  * TODO: Is there a way we can ask the browser what's supported in `<img>`s?
 269                  *
 270                  * TODO: Put SVG back after working around Firefox 7 bug <https://bugzilla.wikimedia.org/show_bug.cgi?id=31643>
 271                  *
 272                  * @param {File} file
 273                  * @return boolean
 274                  */
 275                 function fileIsPreviewable( file ) {
 276                         var known = ['image/png', 'image/gif', 'image/jpeg', 'image/svg+xml'],
 277                                 tooHuge = 10 * 1024 * 1024;
 278                         return ( $.inArray( file.type, known ) !== -1 ) && file.size > 0 && file.size < tooHuge;
 279                 }
 280
 281                 /**
 282                  * Show a thumbnail preview of PNG, JPEG, GIF, and SVG files prior to upload
 283                  * in browsers supporting HTML5 FileAPI.
 284                  *
 285                  * As of this writing, known good:
 286                  *
 287                  * - Firefox 3.6+
 288                  * - Chrome 7.something
 289                  *
 290                  * TODO: Check file size limits and warn of likely failures
 291                  *
 292                  * @param {File} file
 293                  */
 294                 function showPreview( file ) {
 295                         var $canvas,
 296                                 ctx,
 297                                 meta,
 298                                 previewSize = 180,
 299                                 thumb = mw.template.get( 'mediawiki.special.upload', 'thumbnail.html' ).render();
 300
 301                         thumb.find( '.filename' ).text( file.name ).end()
 302                                 .find( '.fileinfo' ).text( prettySize( file.size ) ).end();
 303
 304                         $canvas = $( '<canvas width="' + previewSize + '" height="' + previewSize + '" ></canvas>' );
 305                         ctx = $canvas[0].getContext( '2d' );
 306                         $( '#mw-htmlform-source' ).parent().prepend( thumb );
 307
 308                         fetchPreview( file, function ( dataURL ) {
 309                                 var img = new Image(),
 310                                         rotation = 0;
 311
 312                                 if ( meta && meta.tiff && meta.tiff.Orientation ) {
 313                                         rotation = ( 360 - ( function () {
 314                                                 // See includes/media/Bitmap.php
 315                                                 switch ( meta.tiff.Orientation.value ) {
 316                                                         case 8:
 317                                                                 return 90;
 318                                                         case 3:
 319                                                                 return 180;
 320                                                         case 6:
 321                                                                 return 270;
 322                                                         default:
 323                                                                 return 0;
 324                                                 }
 325                                         }() ) ) % 360;
 326                                 }
 327
 328                                 img.onload = function () {
 329                                         var info, width, height, x, y, dx, dy, logicalWidth, logicalHeight;
 330
 331                                         // Fit the image within the previewSizexpreviewSize box
 332                                         if ( img.width > img.height ) {
 333                                                 width = previewSize;
 334                                                 height = img.height / img.width * previewSize;
 335                                         } else {
 336                                                 height = previewSize;
 337                                                 width = img.width / img.height * previewSize;
 338                                         }
 339                                         // Determine the offset required to center the image
 340                                         dx = ( 180 - width ) / 2;
 341                                         dy = ( 180 - height ) / 2;
 342                                         switch ( rotation ) {
 343                                                 // If a rotation is applied, the direction of the axis
 344                                                 // changes as well. You can derive the values below by
 345                                                 // drawing on paper an axis system, rotate it and see
 346                                                 // where the positive axis direction is
 347                                                 case 0:
 348                                                         x = dx;
 349                                                         y = dy;
 350                                                         logicalWidth = img.width;
 351                                                         logicalHeight = img.height;
 352                                                         break;
 353                                                 case 90:
 354
 355                                                         x = dx;
 356                                                         y = dy - previewSize;
 357                                                         logicalWidth = img.height;
 358                                                         logicalHeight = img.width;
 359                                                         break;
 360                                                 case 180:
 361                                                         x = dx - previewSize;
 362                                                         y = dy - previewSize;
 363                                                         logicalWidth = img.width;
 364                                                         logicalHeight = img.height;
 365                                                         break;
 366                                                 case 270:
 367                                                         x = dx - previewSize;
 368                                                         y = dy;
 369                                                         logicalWidth = img.height;
 370                                                         logicalHeight = img.width;
 371                                                         break;
 372                                         }
 373
 374                                         ctx.clearRect( 0, 0, 180, 180 );
 375                                         ctx.rotate( rotation / 180 * Math.PI );
 376                                         ctx.drawImage( img, x, y, width, height );
 377                                         thumb.find( '.mw-small-spinner' ).replaceWith( $canvas );
 378
 379                                         // Image size
 380                                         info = mw.msg( 'widthheight', logicalWidth, logicalHeight ) +
 381                                                 ', ' + prettySize( file.size );
 382
 383                                         $( '#mw-upload-thumbnail .fileinfo' ).text( info );
 384                                 };
 385                                 img.src = dataURL;
 386                         }, mw.config.get( 'wgFileCanRotate' ) ? function ( data ) {
 387                                 try {
 388                                         meta = mw.libs.jpegmeta( data, file.fileName );
 389                                         // jscs:disable requireCamelCaseOrUpperCaseIdentifiers, disallowDanglingUnderscores
 390                                         meta._binary_data = null;
 391                                         // jscs:enable
 392                                 } catch ( e ) {
 393                                         meta = null;
 394                                 }
 395                         } : null );
 396                 }
 397
 398                 /**
 399                  * Start loading a file into memory; when complete, pass it as a
 400                  * data URL to the callback function. If the callbackBinary is set it will
 401                  * first be read as binary and afterwards as data URL. Useful if you want
 402                  * to do preprocessing on the binary data first.
 403                  *
 404                  * @param {File} file
 405                  * @param {Function} callback
 406                  * @param {Function} callbackBinary
 407                  */
 408                 function fetchPreview( file, callback, callbackBinary ) {
 409                         var reader = new FileReader();
 410                         if ( callbackBinary && 'readAsBinaryString' in reader ) {
 411                                 // To fetch JPEG metadata we need a binary string; start there.
 412                                 // todo:
 413                                 reader.onload = function () {
 414                                         callbackBinary( reader.result );
 415
 416                                         // Now run back through the regular code path.
 417                                         fetchPreview( file, callback );
 418                                 };
 419                                 reader.readAsBinaryString( file );
 420                         } else if ( callbackBinary && 'readAsArrayBuffer' in reader ) {
 421                                 // readAsArrayBuffer replaces readAsBinaryString
 422                                 // However, our JPEG metadata library wants a string.
 423                                 // So, this is going to be an ugly conversion.
 424                                 reader.onload = function () {
 425                                         var i,
 426                                                 buffer = new Uint8Array( reader.result ),
 427                                                 string = '';
 428                                         for ( i = 0; i < buffer.byteLength; i++ ) {
 429                                                 string += String.fromCharCode( buffer[i] );
 430                                         }
 431                                         callbackBinary( string );
 432
 433                                         // Now run back through the regular code path.
 434                                         fetchPreview( file, callback );
 435                                 };
 436                                 reader.readAsArrayBuffer( file );
 437                         } else if ( 'URL' in window && 'createObjectURL' in window.URL ) {
 438                                 // Supported in Firefox 4.0 and above <https://developer.mozilla.org/en/DOM/window.URL.createObjectURL>
 439                                 // WebKit has it in a namespace for now but that's ok. ;)
 440                                 //
 441                                 // Lifetime of this URL is until document close, which is fine
 442                                 // for Special:Upload -- if this code gets used on longer-running
 443                                 // pages, add a revokeObjectURL() when it's no longer needed.
 444                                 //
 445                                 // Prefer this over readAsDataURL for Firefox 7 due to bug reading
 446                                 // some SVG files from data URIs <https://bugzilla.mozilla.org/show_bug.cgi?id=694165>
 447                                 callback( window.URL.createObjectURL( file ) );
 448                         } else {
 449                                 // This ends up decoding the file to base-64 and back again, which
 450                                 // feels horribly inefficient.
 451                                 reader.onload = function () {
 452                                         callback( reader.result );
 453                                 };
 454                                 reader.readAsDataURL( file );
 455                         }
 456                 }
 457
 458                 /**
 459                  * Format a file size attractively.
 460                  *
 461                  * TODO: Match numeric formatting
 462                  *
 463                  * @param {number} s
 464                  * @return {string}
 465                  */
 466                 function prettySize( s ) {
 467                         var sizeMsgs = ['size-bytes', 'size-kilobytes', 'size-megabytes', 'size-gigabytes'];
 468                         while ( s >= 1024 && sizeMsgs.length > 1 ) {
 469                                 s /= 1024;
 470                                 sizeMsgs = sizeMsgs.slice( 1 );
 471                         }
 472                         return mw.msg( sizeMsgs[0], Math.round( s ) );
 473                 }
 474
 475                 /**
 476                  * Clear the file upload preview area.
 477                  */
 478                 function clearPreview() {
 479                         $( '#mw-upload-thumbnail' ).remove();
 480                 }
 481
 482                 /**
 483                  * Check if the file does not exceed the maximum size
 484                  */
 485                 function checkMaxUploadSize( file ) {
 486                         var maxSize, $error;
 487
 488                         function getMaxUploadSize( type ) {
 489                                 var sizes = mw.config.get( 'wgMaxUploadSize' );
 490
 491                                 if ( sizes[type] !== undefined ) {
 492                                         return sizes[type];
 493                                 }
 494                                 return sizes['*'];
 495                         }
 496
 497                         $( '.mw-upload-source-error' ).remove();
 498
 499                         maxSize = getMaxUploadSize( 'file' );
 500                         if ( file.size > maxSize ) {
 501                                 $error = $( '<p class="error mw-upload-source-error" id="wpSourceTypeFile-error">' +
 502                                         mw.message( 'largefileserver', file.size, maxSize ).escaped() + '</p>' );
 503
 504                                 $( '#wpUploadFile' ).after( $error );
 505
 506                                 return false;
 507                         }
 508
 509                         return true;
 510                 }
 511
 512                 /* Initialization */
 513                 if ( hasFileAPI() ) {
 514                         // Update thumbnail when the file selection control is updated.
 515                         $( '#wpUploadFile' ).change( function () {
 516                                 clearPreview();
 517                                 if ( this.files && this.files.length ) {
 518                                         // Note: would need to be updated to handle multiple files.
 519                                         var file = this.files[0];
 520
 521                                         if ( !checkMaxUploadSize( file ) ) {
 522                                                 return;
 523                                         }
 524
 525                                         if ( fileIsPreviewable( file ) ) {
 526                                                 showPreview( file );
 527                                         }
 528                                 }
 529                         } );
 530                 }
 531         } );
 532
 533         // Disable all upload source fields except the selected one
 534         $( function () {
 535                 var i, $row,
 536                         $rows = $( '.mw-htmlform-field-UploadSourceField' );
 537
 538                 /**
 539                  * @param {jQuery} $currentRow
 540                  * @return {Function} Handler
 541                  * @return {jQuery.Event} return.e
 542                  */
 543                 function createHandler( $currentRow ) {
 544                         return function () {
 545                                 $( '.mw-upload-source-error' ).remove();
 546                                 if ( this.checked ) {
 547                                         // Disable all inputs
 548                                         $rows.find( 'input[name!="wpSourceType"]' ).prop( 'disabled', true );
 549                                         // Re-enable the current one
 550                                         $currentRow.find( 'input' ).prop( 'disabled', false );
 551                                 }
 552                         };
 553                 }
 554
 555                 for ( i = $rows.length; i; i-- ) {
 556                         $row = $rows.eq( i - 1 );
 557                         $row
 558                                 .find( 'input[name="wpSourceType"]' )
 559                                 .change( createHandler( $row ) );
 560                 }
 561         } );
 562
 563         $( function () {
 564                 // Prevent losing work
 565                 var allowCloseWindow,
 566                         $uploadForm = $( '#mw-upload-form' );
 567
 568                 if ( !mw.user.options.get( 'useeditwarning' ) ) {
 569                         // If the user doesn't want edit warnings, don't set things up.
 570                         return;
 571                 }
 572
 573                 $uploadForm.data( 'origtext', $uploadForm.serialize() );
 574
 575                 allowCloseWindow = mw.confirmCloseWindow( {
 576                         test: function () {
 577                                 return $( '#wpUploadFile' ).get( 0 ).files.length !== 0 ||
 578                                         $uploadForm.data( 'origtext' ) !== $uploadForm.serialize();
 579                         },
 580
 581                         message: mw.msg( 'editwarning-warning' ),
 582                         namespace: 'uploadwarning'
 583                 } );
 584
 585                 $uploadForm.submit( function () {
 586                         allowCloseWindow();
 587                 } );
 588         } );
 589 }( mediaWiki, jQuery ) );