Mobile: Fixes #244: When accessing configuration or encrypt configuration option while making a note and the going back, the note gets erased

ReactNativeClient/lib/services/NavService.js

@@ -0,0 +1,35 @@
+class NavService {
+
+	static async go(routeName) {
+		if (this.handlers_.length) {
+			let r = await this.handlers_[this.handlers_.length - 1]();
+			if (r) return r;
+		}
+
+		this.dispatch({
+			type: 'NAV_GO',
+			routeName: routeName,
+		});	
+	}
+
+	static addHandler(handler) {
+		for (let i = this.handlers_.length - 1; i >= 0; i--) {
+			const h = this.handlers_[i];
+			if (h === handler) return;
+		}
+
+		return this.handlers_.push(handler);
+	}
+
+	static removeHandler(hanlder) {
+		for (let i = this.handlers_.length - 1; i >= 0; i--) {
+			const h = this.handlers_[i];
+			if (h === hanlder) this.handlers_.splice(i, 1);
+		}
+	}
+
+}
+
+NavService.handlers_ = [];
+
+module.exports = NavService;