kea-react/dist/upload.js

Componentes comunes de react

"use strict";
var __extends = (this && this.__extends) || (function () {
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})();
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Object.defineProperty(exports, "__esModule", { value: true });
var React = require("react");
var botones_1 = require("./botones");
function hideInput(el) {
    el.style.position = 'absolute';
    el.style.top = "0";
    el.style.left = "0";
    el.style.width = "0";
    el.style.height = "0";
    el.style.display = "none";
}
/**Obtiene un arreglo con los archivos seleccionados en un input. Devuelve null si no se seleccionó ningun archivo */
function getFiles(input) {
    if (!input.files || input.files.length == 0)
        return null;
    var multi = input.multiple;
    var inputFiles = input.files;
    var fileArray = [];
    for (var i = 0; i < inputFiles.length; i++) {
        fileArray.push(inputFiles[i]);
    }
    return fileArray;
}
function upload(multi) {
    //Creamos un elemento input escondido:
    var input = document.createElement("input");
    input.type = "file";
    hideInput(input);
    input.multiple = multi || false;
    //Lo agregamos al documento:
    document.body.appendChild(input);
    return new Promise(function (resolve) {
        input.onchange = function (ev) {
            var files = getFiles(input);
            var ret = files && (multi ? files : files[0]);
            //Quitamos el input del documento:
            document.body.removeChild(input);
            resolve(ret);
        };
        /**Bandera que indica si se debe de revisar si el input se cancelo, esto porque sólo se debe de hacer una vez */
        var checkCancel = true;
        function onBodyFocus() {
            if (!checkCancel)
                return;
            checkCancel = false;
            document.body.removeEventListener("focus", onfocus);
            //Realizamos el chequeo con un retraso, si lo revisamos inmediatamente el valor de input.value aun no
            //estará actualizado
            setTimeout(function () {
                if (!input.value) {
                    //El usuario no seleccionó ningún archivo
                    resolve(null);
                }
            }, 100);
        }
        document.body.addEventListener("focus", onBodyFocus, true);
        input.click();
    });
}
exports.upload = upload;
/**Esta clase sirve para mostrar un botón que nos permite abrir un filechooser y regresa un arreglo de tipo File
 * @deprecated Utilice en lugar de este componente un Button y la función upload()
 */
var Upload = /** @class */ (function (_super) {
    __extends(Upload, _super);
    function Upload(props) {
        var _this = _super.call(this, props) || this;
        _this.handleInput = function (input) {
            if (input) {
                _this.input = input;
            }
        };
        _this.handleOnChangeAsync = function (files) { return __awaiter(_this, void 0, void 0, function () {
            var ret, i;
            return __generator(this, function (_a) {
                switch (_a.label) {
                    case 0:
                        if (!this.props.onChange)
                            return [2 /*return*/];
                        if (!files || files.length == 0)
                            return [2 /*return*/];
                        ret = [];
                        for (i = 0; i < files.length; i++) {
                            ret.push(files.item(i));
                        }
                        return [4 /*yield*/, this.props.onChange(ret)];
                    case 1:
                        _a.sent();
                        return [2 /*return*/];
                }
            });
        }); };
        _this.handleOnChange = function (a) {
            _this.handleOnChangeAsync(_this.input.files);
            _this.input.value = null;
            return false;
        };
        _this.handleOnClick = function () {
            _this.input.click();
        };
        console.warn("@deprecated Utilice en lugar del componente <Upload /> un <Button /> y la función upload()");
        return _this;
    }
    Upload.prototype.render = function () {
        var esconder = {
            position: 'absolute',
            top: 0,
            left: 0,
            width: 0,
            height: 0,
            display: "none"
        };
        return (React.createElement("div", { style: { position: "relative", backgroundColor: "white" } },
            React.createElement("input", { type: "file", onChange: this.handleOnChange, style: esconder, multiple: this.props.multiple, ref: this.handleInput }),
            React.createElement(botones_1.Button, { onClick: this.handleOnClick, disabled: this.props.disabled, iconClass: this.props.iconClass || "fa fa-upload", style: this.props.style || "info", tooltip: this.props.tooltip }, this.props.children || "Buscar archivo")));
    };
    return Upload;
}(React.Component));
exports.Upload = Upload;