/usr/lib/nodejs/mithril/api/redraw.js is in node-mithril 1.1.6-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 | "use strict"
var coreRenderer = require("../render/render")
function throttle(callback) {
//60fps translates to 16.6ms, round it down since setTimeout requires int
var time = 16
var last = 0, pending = null
var timeout = typeof requestAnimationFrame === "function" ? requestAnimationFrame : setTimeout
return function() {
var now = Date.now()
if (last === 0 || now - last >= time) {
last = now
callback()
}
else if (pending === null) {
pending = timeout(function() {
pending = null
callback()
last = Date.now()
}, time - (now - last))
}
}
}
module.exports = function($window) {
var renderService = coreRenderer($window)
renderService.setEventCallback(function(e) {
if (e.redraw === false) e.redraw = undefined
else redraw()
})
var callbacks = []
function subscribe(key, callback) {
unsubscribe(key)
callbacks.push(key, throttle(callback))
}
function unsubscribe(key) {
var index = callbacks.indexOf(key)
if (index > -1) callbacks.splice(index, 2)
}
function redraw() {
for (var i = 1; i < callbacks.length; i += 2) {
callbacks[i]()
}
}
return {subscribe: subscribe, unsubscribe: unsubscribe, redraw: redraw, render: renderService.render}
}
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