tnt-form/dist/lib/component/file.js

## Use

"use strict";

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var Component = require('../component'),
    util = require('../util/util.js');

var File = function (_Component) {
	_inherits(File, _Component);

	function File(id) {
		var opts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

		_classCallCheck(this, File);

		var _this = _possibleConstructorReturn(this, (File.__proto__ || Object.getPrototypeOf(File)).call(this, id, opts));

		var _opts$accept = opts.accept;
		_this.accept = _opts$accept === undefined ? '' : _opts$accept;
		var _opts$multiple = opts.multiple;
		_this.multiple = _opts$multiple === undefined ? false : _opts$multiple;
		return _this;
	}

	_createClass(File, [{
		key: 'getValue',
		value: function getValue() {
			return this.input.files;
		}
	}, {
		key: 'validate',
		value: function validate() {

			_get(File.prototype.__proto__ || Object.getPrototypeOf(File.prototype), 'validate', this).call(this);
			this.postValidate();
		}
	}, {
		key: 'build',
		value: function build() {
			var _this2 = this;

			_get(File.prototype.__proto__ || Object.getPrototypeOf(File.prototype), 'build', this).call(this);

			this.input = document.createElement('input');
			this.input.setAttribute('type', 'file');
			this.input.setAttribute('accept', this.accept);

			if (this.v8nRequired) {
				this.input.required = true;
			}

			if (this.multiple) {
				this.input.setAttribute('multiple', '');
			}

			this.preview = document.createElement('div');
			this.preview.classList.add('file-preview');

			this.getContainer().appendChild(this.input);
			this.getContainer().appendChild(this.preview);

			this.input.addEventListener('change', function (e) {

				_this2.trigger('change');

				var files = _this2.input.files;
				var imageType = /image.*/;
				_this2.preview.innerHTML = '';

				var _loop = function _loop(i) {

					var file = files[i];

					var previewEl = document.createElement('div');
					previewEl.classList.add('file-preview-item');

					var filenameEl = document.createElement('div');
					filenameEl.classList.add('file-preview-item-filename');
					filenameEl.textContent = file.name;

					if (file.type.match(imageType)) {

						var reader = new FileReader();

						reader.onload = function (e) {

							var img = new Image();
							img.src = reader.result;

							previewEl.appendChild(img);
						};

						reader.readAsDataURL(file);
					}

					previewEl.appendChild(filenameEl);
					_this2.preview.appendChild(previewEl);
				};

				for (var i = 0; i < files.length; i++) {
					_loop(i);
				}
			});

			return this.getContainer();
		}
	}]);

	return File;
}(Component);

module.exports = File;