survey/templates/components/error/index.ts
2021-10-14 21:25:19 +05:30

77 lines
2.2 KiB
TypeScript

/*
* Copyright (C) 2021 Aravinth Manivannan <realaravinth@batsense.net>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
export const ERR_CONTAINER_ID = "err__container";
export const ERR_MSG_CONTAINER = "err__msg-container"; // class
export const ERR_CLOSE = "err__close"; // class
export const DEFAULT_LIFETIME = 5000;
const err = () => {
let element;
return (() => {
if (element === undefined) {
element = document.getElementById(ERR_CONTAINER_ID);
}
return element;
})();
};
/**
* create error message
*
* @param {string|HTMLElement} message: an error message
* @param {number} lifetime: duration in milliseconds after which error
* message will be deleted
*/
const createError = (
message: string | HTMLElement,
lifetime: number = DEFAULT_LIFETIME,
): void => {
const box = document.createElement("div");
const msg = () => {
if (typeof message === "string") {
return document.createTextNode(message);
} else {
return message;
}
};
box.className = ERR_MSG_CONTAINER;
box.appendChild(msg());
const deleteBtn = document.createElement("button");
const deleteMsg = document.createTextNode("x");
deleteBtn.appendChild(deleteMsg);
deleteBtn.className = ERR_CLOSE;
box.appendChild(deleteBtn);
err().appendChild(box);
const timer = setTimeout(() => box.remove(), lifetime);
const deleteHandler = (e: Event) => {
e.preventDefault();
window.clearTimeout(timer);
box.remove();
};
deleteBtn.addEventListener("click", e => deleteHandler(e));
};
export default createError;