Command pallete: first draft!

src/commandPaletteService.js

@@ -0,0 +1,29 @@
+import { deferred } from './deferred';
+import { log } from 'util';
+
+export const SWITCH_FILE_EVENT = 'switchFileEvent';
+export const OPEN_SAVED_CREATIONS_EVENT = 'openSavedCreationsEvent';
+export const SAVE_EVENT = 'saveEvent';
+
+export const commandPaletteService = {
+	subscriptions: {},
+	subscribe(eventName, callback) {
+		console.log('subscribed for ', eventName);
+		this.subscriptions[eventName] = this.subscriptions[eventName] || [];
+		this.subscriptions[eventName].push(callback);
+		return () => {
+			console.log('Unsubscribing ', eventName);
+			this.subscriptions[eventName].splice(
+				this.subscriptions[eventName].indexOf(callback),
+				1
+			);
+		};
+	},
+	publish(eventName, ...args) {
+		console.log('published ', eventName, args);
+		const callbacks = this.subscriptions[eventName] || [];
+		callbacks.forEach(callback => {
+			callback.apply(null, args);
+		});
+	}
+};