mirror of
https://github.com/YunoHost-Apps/mediawiki_ynh.git
synced 2024-09-03 19:46:05 +02:00
320 lines
9.1 KiB
JavaScript
320 lines
9.1 KiB
JavaScript
/**
|
|
* JavaScript for Special:Upload
|
|
* Note that additional code still lives in skins/common/upload.js
|
|
*/
|
|
( function ( mw, $ ) {
|
|
/**
|
|
* Add a preview to the upload form
|
|
*/
|
|
$( function () {
|
|
/**
|
|
* Is the FileAPI available with sufficient functionality?
|
|
*/
|
|
function hasFileAPI() {
|
|
return window.FileReader !== undefined;
|
|
}
|
|
|
|
/**
|
|
* Check if this is a recognizable image type...
|
|
* Also excludes files over 10M to avoid going insane on memory usage.
|
|
*
|
|
* @todo is there a way we can ask the browser what's supported in <img>s?
|
|
* @todo put SVG back after working around Firefox 7 bug <https://bugzilla.wikimedia.org/show_bug.cgi?id=31643>
|
|
*
|
|
* @param {File} file
|
|
* @return boolean
|
|
*/
|
|
function fileIsPreviewable( file ) {
|
|
var known = ['image/png', 'image/gif', 'image/jpeg', 'image/svg+xml'],
|
|
tooHuge = 10 * 1024 * 1024;
|
|
return ( $.inArray( file.type, known ) !== -1 ) && file.size > 0 && file.size < tooHuge;
|
|
}
|
|
|
|
/**
|
|
* 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 ) {
|
|
var $canvas,
|
|
ctx,
|
|
meta,
|
|
previewSize = 180,
|
|
thumb = $( '<div id="mw-upload-thumbnail" class="thumb tright">' +
|
|
'<div class="thumbinner">' +
|
|
'<div class="mw-small-spinner" style="width: 180px; height: 180px"></div>' +
|
|
'<div class="thumbcaption"><div class="filename"></div><div class="fileinfo"></div></div>' +
|
|
'</div>' +
|
|
'</div>' );
|
|
|
|
thumb.find( '.filename' ).text( file.name ).end()
|
|
.find( '.fileinfo' ).text( prettySize( file.size ) ).end();
|
|
|
|
$canvas = $('<canvas width="' + previewSize + '" height="' + previewSize + '" ></canvas>');
|
|
ctx = $canvas[0].getContext( '2d' );
|
|
$( '#mw-htmlform-source' ).parent().prepend( thumb );
|
|
|
|
fetchPreview( file, function ( dataURL ) {
|
|
var img = new Image(),
|
|
rotation = 0;
|
|
|
|
if ( meta && meta.tiff && meta.tiff.Orientation ) {
|
|
rotation = ( 360 - ( function () {
|
|
// See includes/media/Bitmap.php
|
|
switch ( meta.tiff.Orientation.value ) {
|
|
case 8:
|
|
return 90;
|
|
case 3:
|
|
return 180;
|
|
case 6:
|
|
return 270;
|
|
default:
|
|
return 0;
|
|
}
|
|
}() ) ) % 360;
|
|
}
|
|
|
|
img.onload = function () {
|
|
var info, width, height, x, y, dx, dy, logicalWidth, logicalHeight;
|
|
|
|
// Fit the image within the previewSizexpreviewSize box
|
|
if ( img.width > img.height ) {
|
|
width = previewSize;
|
|
height = img.height / img.width * previewSize;
|
|
} else {
|
|
height = previewSize;
|
|
width = img.width / img.height * previewSize;
|
|
}
|
|
// Determine the offset required to center the image
|
|
dx = (180 - width) / 2;
|
|
dy = (180 - height) / 2;
|
|
switch ( rotation ) {
|
|
// If a rotation is applied, the direction of the axis
|
|
// changes as well. You can derive the values below by
|
|
// drawing on paper an axis system, rotate it and see
|
|
// where the positive axis direction is
|
|
case 0:
|
|
x = dx;
|
|
y = dy;
|
|
logicalWidth = img.width;
|
|
logicalHeight = img.height;
|
|
break;
|
|
case 90:
|
|
|
|
x = dx;
|
|
y = dy - previewSize;
|
|
logicalWidth = img.height;
|
|
logicalHeight = img.width;
|
|
break;
|
|
case 180:
|
|
x = dx - previewSize;
|
|
y = dy - previewSize;
|
|
logicalWidth = img.width;
|
|
logicalHeight = img.height;
|
|
break;
|
|
case 270:
|
|
x = dx - previewSize;
|
|
y = dy;
|
|
logicalWidth = img.height;
|
|
logicalHeight = img.width;
|
|
break;
|
|
}
|
|
|
|
ctx.clearRect( 0, 0, 180, 180 );
|
|
ctx.rotate( rotation / 180 * Math.PI );
|
|
ctx.drawImage( img, x, y, width, height );
|
|
thumb.find('.mw-small-spinner').replaceWith($canvas);
|
|
|
|
// Image size
|
|
info = mw.msg( 'widthheight', logicalWidth, logicalHeight ) +
|
|
', ' + prettySize( file.size );
|
|
|
|
$( '#mw-upload-thumbnail .fileinfo' ).text( info );
|
|
};
|
|
img.src = dataURL;
|
|
}, mw.config.get( 'wgFileCanRotate' ) ? function ( data ) {
|
|
/*jshint camelcase: false, nomen: false */
|
|
try {
|
|
meta = mw.libs.jpegmeta( data, file.fileName );
|
|
meta._binary_data = null;
|
|
} catch ( e ) {
|
|
meta = null;
|
|
}
|
|
} : null );
|
|
}
|
|
|
|
/**
|
|
* 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 ) {
|
|
var 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() {
|
|
var i,
|
|
buffer = new Uint8Array( reader.result ),
|
|
string = '';
|
|
for ( 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 <https://developer.mozilla.org/en/DOM/window.URL.createObjectURL>
|
|
// 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 <https://bugzilla.mozilla.org/show_bug.cgi?id=694165>
|
|
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 );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Format a file size attractively.
|
|
* @todo match numeric formatting
|
|
*
|
|
* @param {number} s
|
|
* @return string
|
|
*/
|
|
function prettySize( s ) {
|
|
var sizeMsgs = ['size-bytes', 'size-kilobytes', 'size-megabytes', 'size-gigabytes'];
|
|
while ( s >= 1024 && sizeMsgs.length > 1 ) {
|
|
s /= 1024;
|
|
sizeMsgs = sizeMsgs.slice( 1 );
|
|
}
|
|
return mw.msg( sizeMsgs[0], Math.round( s ) );
|
|
}
|
|
|
|
/**
|
|
* Clear the file upload preview area.
|
|
*/
|
|
function clearPreview() {
|
|
$( '#mw-upload-thumbnail' ).remove();
|
|
}
|
|
|
|
/**
|
|
* Check if the file does not exceed the maximum size
|
|
*/
|
|
function checkMaxUploadSize( file ) {
|
|
var maxSize, $error;
|
|
|
|
function getMaxUploadSize( type ) {
|
|
var sizes = mw.config.get( 'wgMaxUploadSize' );
|
|
|
|
if ( sizes[type] !== undefined ) {
|
|
return sizes[type];
|
|
}
|
|
return sizes['*'];
|
|
}
|
|
|
|
$( '.mw-upload-source-error' ).remove();
|
|
|
|
maxSize = getMaxUploadSize( 'file' );
|
|
if ( file.size > maxSize ) {
|
|
$error = $( '<p class="error mw-upload-source-error" id="wpSourceTypeFile-error">' +
|
|
mw.message( 'largefileserver', file.size, maxSize ).escaped() + '</p>' );
|
|
|
|
$( '#wpUploadFile' ).after( $error );
|
|
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
/**
|
|
* Initialization
|
|
*/
|
|
if ( hasFileAPI() ) {
|
|
// Update thumbnail when the file selection control is updated.
|
|
$( '#wpUploadFile' ).change( function () {
|
|
clearPreview();
|
|
if ( this.files && this.files.length ) {
|
|
// Note: would need to be updated to handle multiple files.
|
|
var file = this.files[0];
|
|
|
|
if ( !checkMaxUploadSize( file ) ) {
|
|
return;
|
|
}
|
|
|
|
if ( fileIsPreviewable( file ) ) {
|
|
showPreview( file );
|
|
}
|
|
}
|
|
} );
|
|
}
|
|
} );
|
|
|
|
/**
|
|
* Disable all upload source fields except the selected one
|
|
*/
|
|
$( function () {
|
|
var i, $row,
|
|
$rows = $( '.mw-htmlform-field-UploadSourceField' );
|
|
|
|
function createHandler( $currentRow ) {
|
|
/**
|
|
* @param {jQuery.Event}
|
|
*/
|
|
return function () {
|
|
$( '.mw-upload-source-error' ).remove();
|
|
if ( this.checked ) {
|
|
// Disable all inputs
|
|
$rows.find( 'input[name!="wpSourceType"]' ).prop( 'disabled', true );
|
|
// Re-enable the current one
|
|
$currentRow.find( 'input' ).prop( 'disabled', false );
|
|
}
|
|
};
|
|
}
|
|
|
|
for ( i = $rows.length; i; i-- ) {
|
|
$row = $rows.eq(i - 1);
|
|
$row
|
|
.find( 'input[name="wpSourceType"]' )
|
|
.change( createHandler( $row ) );
|
|
}
|
|
} );
|
|
|
|
}( mediaWiki, jQuery ) );
|