v1.10: booterm container — xterm.js + tmux + node-pty

apps/web/src/lib/events.ts

@@ -0,0 +1,80 @@
+// Minimal pub/sub for ephemeral UI events that don't belong on the sessionEvents
+// bus (sessionEvents is for DB-state changes; this file is for UI-only signals
+// like "user clicked send-to-terminal on selected text").
+//
+// Also exposes a tiny registry of currently-mounted terminal panes so the
+// MessageBubble context menu can list them. TerminalPane registers on mount,
+// unregisters on unmount.
+
+type Listener<T> = (payload: T) => void;
+
+interface EventBus<T> {
+  emit(payload: T): void;
+  subscribe(listener: Listener<T>): () => void;
+}
+
+function createEvent<T>(): EventBus<T> {
+  const listeners = new Set<Listener<T>>();
+  return {
+    emit(payload) {
+      for (const l of listeners) {
+        try {
+          l(payload);
+        } catch {
+          /* one bad listener shouldn't break others */
+        }
+      }
+    },
+    subscribe(listener) {
+      listeners.add(listener);
+      return () => {
+        listeners.delete(listener);
+      };
+    },
+  };
+}
+
+export interface SendToTerminalPayload {
+  pane_id: string;
+  text: string;
+}
+
+export const sendToTerminal = createEvent<SendToTerminalPayload>();
+
+export interface TerminalRegistration {
+  paneId: string;
+  label: string;
+}
+
+const terminalRegistry = new Map<string, TerminalRegistration>();
+const registryListeners = new Set<Listener<void>>();
+
+function notifyRegistry(): void {
+  for (const l of registryListeners) {
+    try {
+      l();
+    } catch {
+      /* ignore */
+    }
+  }
+}
+
+export const terminalsRegistry = {
+  register(paneId: string, label: string): () => void {
+    terminalRegistry.set(paneId, { paneId, label });
+    notifyRegistry();
+    return () => {
+      terminalRegistry.delete(paneId);
+      notifyRegistry();
+    };
+  },
+  list(): TerminalRegistration[] {
+    return Array.from(terminalRegistry.values());
+  },
+  subscribe(listener: Listener<void>): () => void {
+    registryListeners.add(listener);
+    return () => {
+      registryListeners.delete(listener);
+    };
+  },
+};