box-ui-elements-mlh/src/utils/download.js

Box UI Elements

/**
 * @flow
 * @file Utility for copying and downloading
 * @author Box
 */

/**
 * Function to download string as txt file
 *
 * @private
 * @param {String} string - string to download
 * @param {String} name - file name to use
 * @return {void}
 */
function download(string: string, name: string) {
    const blob = new Blob([string], { type: 'text/plain;charset=utf-8' });

    // IE11
    if (window.navigator.msSaveBlob) {
        window.navigator.msSaveBlob(blob, name);
        return;
    }

    const url = URL.createObjectURL(blob);
    const a = document.createElement('a');

    a.style.display = 'none';
    a.href = url;
    a.download = name;
    if (document.body) {
        document.body.appendChild(a);
    }

    a.click();

    setTimeout(() => {
        if (document.body) {
            document.body.removeChild(a);
        }

        URL.revokeObjectURL(url);
    }, 100);
}

/**
 * Function to copy string to the clipboard
 *
 * @private
 * @param {String} string - string to copy
 * @return {void}
 */
function copy(string: string) {
    const textarea = document.createElement('textarea');
    const { body } = document;

    textarea.value = string;
    textarea.style.display = 'hidden';

    if (body) {
        body.appendChild(textarea);
        textarea.select();
        document.execCommand('copy');
        body.removeChild(textarea);
    }
}

export { download, copy };