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* VisualEditor UserInterface data transfer handler class.
*
* @copyright See AUTHORS.txt
*/
/**
* Data transfer handler.
*
* @class
* @extends ve.ui.DataTransferHandler
* @abstract
*
* @constructor
* @param {ve.ui.Surface} surface
* @param {ve.ui.DataTransferItem} item
*/
ve.ui.FileTransferHandler = function VeUiFileTransferHandler() {
// Parent constructor
ve.ui.FileTransferHandler.super.apply( this, arguments );
// Properties
this.file = this.item.getAsFile();
this.reader = new FileReader();
// Events
this.reader.addEventListener( 'progress', this.onFileProgress.bind( this ) );
this.reader.addEventListener( 'load', this.onFileLoad.bind( this ) );
this.reader.addEventListener( 'error', this.onFileError.bind( this ) );
};
/* Inheritance */
OO.inheritClass( ve.ui.FileTransferHandler, ve.ui.DataTransferHandler );
/* Static properties */
ve.ui.FileTransferHandler.static.kinds = [ 'file' ];
/**
* List of file extensions supported by this handler
*
* This is used as a fallback if no types were matched.
*
* @static
* @property {string[]}
* @inheritable
*/
ve.ui.FileTransferHandler.static.extensions = [];
/* Methods */
/**
* @inheritdoc
*/
ve.ui.FileTransferHandler.prototype.process = function () {
this.createProgress( this.insertableDataDeferred.promise() );
this.reader.readAsText( this.file );
};
/**
* Handle progress events from the file reader
*
* @param {Event} e Progress event
*/
ve.ui.FileTransferHandler.prototype.onFileProgress = function ( e ) {
if ( e.lengthComputable ) {
this.setProgress( 100 * e.loaded / e.total );
} else {
this.setProgress( false );
}
};
/**
* Handle load events from the file reader
*
* @param {Event} e Load event
*/
ve.ui.FileTransferHandler.prototype.onFileLoad = function () {
this.setProgress( 100 );
};
/**
* Handle error events from the file reader
*
* @param {Event} e Error event
*/
ve.ui.FileTransferHandler.prototype.onFileError = function () {
this.abort();
};
/**
* @inheritdoc
*/
ve.ui.FileTransferHandler.prototype.abort = function () {
// Parent method
ve.ui.FileTransferHandler.super.prototype.abort.apply( this, arguments );
this.reader.abort();
};
/**
* Overrides the parent to make the default label the filename
*
* @param {jQuery.Promise} progressCompletePromise
* @param {jQuery|string|Function} [label] Progress bar label, defaults to file name
*/
ve.ui.FileTransferHandler.prototype.createProgress = function ( progressCompletePromise, label ) {
// Make the default label the filename
label = label || this.file.name;
// Parent method
ve.ui.FileTransferHandler.super.prototype.createProgress.call( this, progressCompletePromise, label );
};
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