https://www.ontimedumpstergr.com/cp/resources/views/test_slot/slot/plugins/Shot.js

1export default function Shot({setComp, onReturn, flow}) {
2
3    if (typeof flow !== "function") {
4        if (typeof flow === "undefined") {
5            throw new ReferenceError("flow is undefined");
6        } else {
7            throw new TypeError("flow must be a function");
8        }
9    }
10
11    this.running = false;
12    this.initialize = async () => {
13        this.running = true;
14    };
15
16    this.show = async (comp, _opts) => {
17        setComp(comp);
18    };
19    this.reset = async () => {
20        return this.show("");
21    };
22    this.finalize = async () => {
23        this.running = false;
24    };
25
26    // called by Slot.js in the component's render()
27    this.setParent = parent => {
28        console.log("setting parent to ", parent);
29        this.parent = parent;
30    };
31
32
33    // used when the flow function exits for any reason:
34    // used to implement deferred statements.
35    this.onreturn = async () => {};
36
37    class ResetError extends Error {}
38    this.reset = (newflow) => {
39        flow = newflow;
40        return new ResetError;
41    };
42
43    const slot = this;
44    this.runloop = async function runloop() {
45        onReturn = onReturn || (()=>{});
46        let err = false;
47        try {
48            const answer = await flow(slot);
49            await onReturn(answer);
50        } catch (e) {
51            if (e instanceof ResetError) {
52                setTimeout(() => runloop());
53                return;
54            } else {
55                err = e;
56            }
57        } finally {
58            await slot.onreturn();
59            if (err) {
60                throw err;
61            } else if (slot.running) {
62                setTimeout(() => runloop());
63            }
64        }
65    };
66}