Sync in background for RN

ReactNativeClient/lib/event-dispatcher.js

@@ -0,0 +1,35 @@
+class EventDispatcher {
+
+	constructor() {
+		this.listeners_ = [];
+	}
+
+	dispatch(eventName, event = null) {
+		if (!this.listeners_[eventName]) return;
+
+		let ls = this.listeners_[eventName];
+		for (let i = 0; i < ls.length; i++) {
+			ls[i](event);
+		}
+	}
+
+	on(eventName, callback) {
+		if (!this.listeners_[eventName]) this.listeners_[eventName] = [];
+		this.listeners_[eventName].push(callback);
+	}
+
+	off(eventName, callback) {
+		if (!this.listeners_[eventName]) return;
+
+		let ls = this.listeners_[eventName];
+		for (let i = 0; i < ls.length; i++) {
+			if (ls[i] === callback) {
+				ls.splice(i, 1);
+				return;
+			}
+		}
+	}
+
+}
+
+export { EventDispatcher };