alexion
4def357d09
Imported as a linear vendor commit so forge rebases do not replay the upstream root tree. git-subtree-dir: third_party/pi git-subtree-split: d981de1229ef899957bbe968bc8dcda02a21f477
44 lines
1.3 KiB
TypeScript
44 lines
1.3 KiB
TypeScript
/**
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* Inter-extension event bus example.
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*
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* Shows pi.events for communication between extensions. One extension
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* can emit events that other extensions listen to.
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*
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* Usage: /emit [event-name] [data] - emit an event on the bus
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*/
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import type { ExtensionAPI, ExtensionContext } from "@earendil-works/pi-coding-agent";
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export default function (pi: ExtensionAPI) {
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// Store ctx for use in event handler
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let currentCtx: ExtensionContext | undefined;
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pi.on("session_start", async (_event, ctx) => {
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currentCtx = ctx;
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});
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// Listen for events from other extensions
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pi.events.on("my:notification", (data) => {
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const { message, from } = data as { message: string; from: string };
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currentCtx?.ui.notify(`Event from ${from}: ${message}`, "info");
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});
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// Command to emit events (emits "my:notification" which the listener above receives)
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pi.registerCommand("emit", {
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description: "Emit my:notification event (usage: /emit message)",
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handler: async (args, _ctx) => {
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const message = args.trim() || "hello";
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pi.events.emit("my:notification", { message, from: "/emit command" });
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// Listener above will show the notification
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},
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});
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// Example: emit on session start
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pi.on("session_start", async () => {
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pi.events.emit("my:notification", {
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message: "Session started",
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from: "event-bus-example",
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});
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});
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}
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