raf.js
715 Bytes
import raf from "rc-util/es/raf";
var id = 0;
var ids = {}; // Support call raf with delay specified frame
export default function wrapperRaf(callback) {
var delayFrames = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 1;
var myId = id++;
var restFrames = delayFrames;
function internalCallback() {
restFrames -= 1;
if (restFrames <= 0) {
callback();
delete ids[myId];
} else {
ids[myId] = raf(internalCallback);
}
}
ids[myId] = raf(internalCallback);
return myId;
}
wrapperRaf.cancel = function cancel(pid) {
if (pid === undefined) return;
raf.cancel(ids[pid]);
delete ids[pid];
};
wrapperRaf.ids = ids; // export this for test usage