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