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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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