moth/theme/common.mjs

64 lines
1.3 KiB
JavaScript

/**
* Common functionality
*/
const Millisecond = 1
const Second = Millisecond * 1000
const Minute = Second * 60
/**
* Display a transient message to the user.
*
* @param {String} message Message to display
* @param {Number} timeout How long before removing this message
*/
function Toast(message, timeout=5*Second) {
console.info(message)
for (let toasts of document.querySelectorAll(".toasts")) {
let p = toasts.appendChild(document.createElement("p"))
p.classList.add("toast")
p.textContent = message
setTimeout(() => p.remove(), timeout)
}
}
/**
* Run a function when the DOM has been loaded.
*
* @param {function():void} cb Callback function
*/
function WhenDOMLoaded(cb) {
if (document.readyState === "loading") {
document.addEventListener("DOMContentLoaded", cb)
} else {
cb()
}
}
/**
* Interprets a String as a Boolean.
*
* Values like "no" or "disabled" to mean false here.
*
* @param {String} s
* @returns {Boolean}
*/
function Truthy(s) {
switch (s.toLowerCase()) {
case "disabled":
case "no":
case "off":
case "false":
return false
}
return true
}
export {
Millisecond,
Second,
Minute,
Toast,
WhenDOMLoaded,
Truthy,
}