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