devextreme/cjs/exporter/file_saver.js

HTML5 JavaScript Component Suite for Responsive Web Development

/**
 * DevExtreme (cjs/exporter/file_saver.js)
 * Version: 24.2.6
 * Build date: Mon Mar 17 2025
 *
 * Copyright (c) 2012 - 2025 Developer Express Inc. ALL RIGHTS RESERVED
 * Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
 */

"use strict";
exports.fileSaver = exports.MIME_TYPES = void 0;
var _dom_adapter = _interopRequireDefault(require("../core/dom_adapter"));
var _window = require("../core/utils/window");
var _ui = _interopRequireDefault(require("../ui/widget/ui.errors"));
var _type = require("../core/utils/type");
var _console = require("../core/utils/console");

function _interopRequireDefault(e) {
    return e && e.__esModule ? e : {
        default: e
    }
}
const window = (0, _window.getWindow)();
const navigator = (0, _window.getNavigator)();
const FILE_EXTESIONS = {
    EXCEL: "xlsx",
    CSS: "css",
    PNG: "png",
    JPEG: "jpeg",
    GIF: "gif",
    SVG: "svg",
    PDF: "pdf"
};
const MIME_TYPES = exports.MIME_TYPES = {
    CSS: "text/css",
    EXCEL: "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
    PNG: "image/png",
    JPEG: "image/jpeg",
    GIF: "image/gif",
    SVG: "image/svg+xml",
    PDF: "application/pdf"
};
const fileSaver = exports.fileSaver = {
    _revokeObjectURLTimeout: 3e4,
    _getDataUri: function(format, data) {
        const mimeType = this._getMimeType(format);
        return `data:${mimeType};base64,${data}`
    },
    _getMimeType: function(format) {
        return MIME_TYPES[format] || "application/octet-stream"
    },
    _linkDownloader: function(fileName, href) {
        const exportLinkElement = _dom_adapter.default.createElement("a");
        exportLinkElement.download = fileName;
        exportLinkElement.href = href;
        exportLinkElement.target = "_blank";
        return exportLinkElement
    },
    _winJSBlobSave: function(blob, fileName, format) {
        const savePicker = new Windows.Storage.Pickers.FileSavePicker;
        savePicker.suggestedStartLocation = Windows.Storage.Pickers.PickerLocationId.documentsLibrary;
        const fileExtension = FILE_EXTESIONS[format];
        if (fileExtension) {
            const mimeType = this._getMimeType(format);
            savePicker.fileTypeChoices.insert(mimeType, ["." + fileExtension])
        }
        savePicker.suggestedFileName = fileName;
        savePicker.pickSaveFileAsync().then((function(file) {
            if (file) {
                file.openAsync(Windows.Storage.FileAccessMode.readWrite).then((function(outputStream) {
                    const inputStream = blob.msDetachStream();
                    Windows.Storage.Streams.RandomAccessStream.copyAsync(inputStream, outputStream).then((function() {
                        outputStream.flushAsync().done((function() {
                            inputStream.close();
                            outputStream.close()
                        }))
                    }))
                }))
            }
        }))
    },
    _click: function(link) {
        try {
            link.dispatchEvent(new MouseEvent("click", {
                cancelable: true
            }))
        } catch (e) {
            const event = _dom_adapter.default.getDocument().createEvent("MouseEvents");
            event.initMouseEvent("click", true, true, window, 0, 0, 0, 80, 20, false, false, false, false, 0, null);
            link.dispatchEvent(event)
        }
    },
    _saveBlobAs: function(fileName, format, data) {
        this._blobSaved = false;
        if ((0, _type.isDefined)(navigator.msSaveOrOpenBlob)) {
            navigator.msSaveOrOpenBlob(data, fileName);
            this._blobSaved = true
        } else if ((0, _type.isDefined)(window.WinJS)) {
            this._winJSBlobSave(data, fileName, format);
            this._blobSaved = true
        } else {
            const URL = window.URL || window.webkitURL || window.mozURL || window.msURL || window.oURL;
            if ((0, _type.isDefined)(URL)) {
                const objectURL = URL.createObjectURL(data);
                const downloadLink = this._linkDownloader(fileName, objectURL);
                setTimeout((() => {
                    URL.revokeObjectURL(objectURL);
                    this._objectUrlRevoked = true
                }), this._revokeObjectURLTimeout);
                this._click(downloadLink)
            } else {
                _console.logger.warn("window.URL || window.webkitURL || window.mozURL || window.msURL || window.oURL is not defined")
            }
        }
    },
    saveAs: function(fileName, format, data) {
        const fileExtension = FILE_EXTESIONS[format];
        if (fileExtension) {
            fileName += "." + fileExtension
        }
        if ((0, _type.isFunction)(window.Blob)) {
            this._saveBlobAs(fileName, format, data)
        } else {
            if (!(0, _type.isDefined)(navigator.userAgent.match(/iPad/i))) {
                _ui.default.log("E1034")
            }
            const downloadLink = this._linkDownloader(fileName, this._getDataUri(format, data));
            this._click(downloadLink)
        }
    }
};