' ).append(
$( '| ' ),
$( ' | ' ).attr( 'id', 'mw-license-preview' )
)
);
}
// fillDestFile setup. Note if the upload wiki does not allow uploads,
// e.g. Polish Wikipedia - this code still runs amnd this will be undefined,
// so fallback to empty array.
mw.config.get( 'wgUploadSourceIds', [] ).forEach( ( sourceId ) => {
$( '#' + sourceId ).on( 'change', function () {
if ( !mw.config.get( 'wgUploadAutoFill' ) ) {
return;
}
// Remove any previously flagged errors
$( '#mw-upload-permitted, #mw-upload-prohibited' ).removeClass();
const path = $( this ).val();
// Find trailing part
const slash = path.lastIndexOf( '/' );
const backslash = path.lastIndexOf( '\\' );
let fname;
if ( slash === -1 && backslash === -1 ) {
fname = path;
} else if ( slash > backslash ) {
fname = path.slice( slash + 1 );
} else {
fname = path.slice( backslash + 1 );
}
// Clear the filename if it does not have a valid extension.
// URLs are less likely to have a useful extension, so don't include them in the
// extension check.
if (
mw.config.get( 'wgCheckFileExtensions' ) &&
mw.config.get( 'wgStrictFileExtensions' ) &&
Array.isArray( mw.config.get( 'wgFileExtensions' ) ) &&
$( this ).attr( 'id' ) !== 'wpUploadFileURL'
) {
if (
fname.lastIndexOf( '.' ) === -1 ||
!mw.config.get( 'wgFileExtensions' ).map( ( element ) => element.toLowerCase() ).includes( fname.slice( fname.lastIndexOf( '.' ) + 1 ).toLowerCase() )
) {
// Not a valid extension
// Clear the upload and set mw-upload-permitted to error
$( this ).val( '' );
$( '#mw-upload-permitted' ).attr( 'class', 'error' );
$( '#mw-upload-prohibited' ).attr( 'class', 'error' );
// Clear wpDestFile as well
$( '#wpDestFile' ).val( '' );
return false;
}
}
// Replace spaces by underscores and capitalise first letter if needed.
const title = mw.Title.makeTitle( NS_FILE, fname );
if ( !title ) {
// This happens on invalid characters like <, >, [, ]
return false;
}
fname = title.getMain();
// Output result
if ( $( '#wpDestFile' ).length ) {
// Call decodeURIComponent function to remove possible URL-encoded characters
// from the file name (T32390). Especially likely with upload-form-url.
// decodeURIComponent can throw an exception if input is invalid utf-8
try {
$( '#wpDestFile' ).val( decodeURIComponent( fname ) );
} catch ( err ) {
$( '#wpDestFile' ).val( fname );
}
uploadWarning.checkNow( fname );
}
} );
} );
} );
// Add a preview to the upload form
$( () => {
/**
* Is the FileAPI available with sufficient functionality?
*
* @return {boolean}
*/
function hasFileAPI() {
return window.FileReader !== undefined;
}
/**
* Check if this is a recognizable image type...
* Also excludes files over 10 MiB to avoid excessive memory usage.
*
* TODO: Is there a way we can ask the browser what's supported in `![]() `s?
*
* @param {File} file
* @return {boolean}
*/
function fileIsPreviewable( file ) {
const known = [ 'image/png', 'image/gif', 'image/jpeg', 'image/svg+xml', 'image/webp' ],
tooHuge = 10 * 1024 * 1024;
return ( known.includes( file.type ) ) && file.size > 0 && file.size < tooHuge;
}
/**
* Format a file size attractively.
*
* TODO: Match numeric formatting
*
* @param {number} s
* @return {string}
*/
function prettySize( s ) {
let sizeMsgs = [ 'size-bytes', 'size-kilobytes', 'size-megabytes', 'size-gigabytes' ];
while ( s >= 1024 && sizeMsgs.length > 1 ) {
s /= 1024;
sizeMsgs = sizeMsgs.slice( 1 );
}
// The following messages are used here:
// * size-bytes
// * size-kilobytes
// * size-megabytes
// * size-gigabytes
return mw.msg( sizeMsgs[ 0 ], Math.round( s ) );
}
/**
* Start loading a file into memory; when complete, pass it as a
* data URL to the callback function. If the callbackBinary is set it will
* first be read as binary and afterwards as data URL. Useful if you want
* to do preprocessing on the binary data first.
*
* @param {File} file
* @param {Function} callback
* @param {Function} callbackBinary
*/
function fetchPreview( file, callback, callbackBinary ) {
const reader = new FileReader();
if ( callbackBinary && 'readAsBinaryString' in reader ) {
// To fetch JPEG metadata we need a binary string; start there.
// TODO
reader.onload = function () {
callbackBinary( reader.result );
// Now run back through the regular code path.
fetchPreview( file, callback );
};
reader.readAsBinaryString( file );
} else if ( callbackBinary && 'readAsArrayBuffer' in reader ) {
// readAsArrayBuffer replaces readAsBinaryString
// However, our JPEG metadata library wants a string.
// So, this is going to be an ugly conversion.
reader.onload = function () {
const buffer = new Uint8Array( reader.result );
let string = '';
for ( let i = 0; i < buffer.byteLength; i++ ) {
string += String.fromCharCode( buffer[ i ] );
}
callbackBinary( string );
// Now run back through the regular code path.
fetchPreview( file, callback );
};
reader.readAsArrayBuffer( file );
} else if ( 'URL' in window && 'createObjectURL' in window.URL ) {
// Supported in Firefox 4.0 and above
// WebKit has it in a namespace for now but that's ok. ;)
//
// Lifetime of this URL is until document close, which is fine
// for Special:Upload -- if this code gets used on longer-running
// pages, add a revokeObjectURL() when it's no longer needed.
//
// Prefer this over readAsDataURL for Firefox 7 due to bug reading
// some SVG files from data URIs
callback( window.URL.createObjectURL( file ) );
} else {
// This ends up decoding the file to base-64 and back again, which
// feels horribly inefficient.
reader.onload = function () {
callback( reader.result );
};
reader.readAsDataURL( file );
}
}
/**
* Clear the file upload preview area.
*/
function clearPreview() {
$( '#mw-upload-thumbnail' ).remove();
}
/**
* Show a thumbnail preview of PNG, JPEG, GIF, and SVG files prior to upload
* in browsers supporting HTML5 FileAPI.
*
* As of this writing, known good:
*
* - Firefox 3.6+
* - Chrome 7.something
*
* TODO: Check file size limits and warn of likely failures
*
* @param {File} file
*/
function showPreview( file ) {
let meta;
const previewSize = 180,
$spinner = $.createSpinner( { size: 'small', type: 'block' } )
.css( { width: previewSize, height: previewSize } ),
thumb = mw.template.get( 'mediawiki.special.upload', 'thumbnail.html' ).render();
thumb
.find( '.filename' ).text( file.name ).end()
.find( '.fileinfo' ).text( prettySize( file.size ) ).end()
.children().first().prepend( $spinner ).end();
const $canvas = $( ' |