Add store to js runtime

runtime/js/core/main.js

@@ -15,6 +15,7 @@ import { NewBinding } from './bindings';
 import { Callback } from './calls';
 import { AddScript, InjectCSS } from './utils';
 import { AddIPCListener } from './ipc';
+import * as Store from './store';
 
 // Initialise global if not already
 window.wails = window.wails || {};
@@ -42,6 +43,7 @@ var runtime = {
 		Heartbeat,
 		Acknowledge,
 	},
+	Store,
 	_: internal,
 };
 

runtime/js/core/store.js

@@ -0,0 +1,65 @@
+/*
+ _       __      _ __    
+| |     / /___ _(_) /____
+| | /| / / __ `/ / / ___/
+| |/ |/ / /_/ / / (__  ) 
+|__/|__/\__,_/_/_/____/  
+The lightweight framework for web-like apps
+(c) Lea Anthony 2019-present
+*/
+/* jshint esversion: 6 */
+
+/**
+ * Creates a new sync store with the given name and optional default value
+ *
+ * @export
+ * @param {string} name
+ * @param {*} optionalDefault
+ */
+export function New(name, optionalDefault) {
+
+	var data;
+
+	if( !window.wails) {
+		throw Error('Wails is not initialised');
+	}
+
+	let callbacks = [];
+	
+	this.subscribe = (callback) => {
+		callbacks.push(callback);
+	};
+
+	this.set = (newdata) => {
+		
+		data = newdata;
+
+		// Emit the data
+		window.wails.Events.Emit('wails:sync:store:updated:'+name, data);
+	};
+
+	this.update = (updater) => {
+		var newValue = updater(data);
+		this.set(newValue);
+	};
+
+	// Setup event listener
+	window.wails.Events.On('wails:sync:store:updated:'+name, function(result) {
+
+		// Save data
+		data = result;
+
+		// Notify listeners
+		callbacks.forEach( function(callback) {
+			callback(data);
+		});
+
+	});
+
+	// Set to the optional default if set
+	if( optionalDefault ) {
+		this.set(optionalDefault);
+	}
+
+	return this;
+}