betaflight-configurator/js/usb.js

'use strict';

var usbDevices = {
    STM32DFU: {'vendorId': 1155, 'productId': 57105}
};
var usbPermissions = {permissions: [{'usbDevices': [usbDevices.STM32DFU]}]};

function check_usb_permissions(callback) {
    chrome.permissions.contains(usbPermissions, function (result) {
        if (result) {
            GUI.optional_usb_permissions = true;
        } else {
            console.log('Optional USB permissions: missing');
            GUI.log(chrome.i18n.getMessage('please_grant_usb_permissions'));

            // display optional usb permissions request box
            $('div.optional_permissions').show();

            // UI hooks
            document.getElementById("requestOptionalPermissions").addEventListener('click', function () {
                chrome.permissions.request(usbPermissions, function (result) {
                    if (result) {
                        GUI.log(chrome.i18n.getMessage('usb_permissions_granted'));
                        $('div.optional_permissions').hide();

                        GUI.optional_usb_permissions = true;
                    }
                });
            });
        }

        if (callback) {
            callback();
        }
    });
}