BaseController.ts (Typescript version of UI5 BaseController from which view controller inherit)

BaseController.ts

sap.ui.define([
	"sap/ui/core/mvc/Controller",
	"sap/ui/core/routing/History",
	"de/tammenit/ui5/AppAdminApp/Component",
	"sap/ui/model/json/JSONModel"
], function(Controller: typeof sap.ui.core.mvc.Controller,
						History: typeof sap.ui.core.routing.History,
						Component: typeof de.tammenit.ui5.AppAdminApp.Component,
						JSONModel: typeof sap.ui.model.json.JSONModel) {
	"use strict";

	class BaseController extends Controller {
		private model: sap.ui.model.json.JSONModel;

		constructor() {
			// it's important to call the extend method here. It creates metadata that is used in UI5 apps via
			// the method getMetadata. Hence we also assign this method to the prototype of our class.
			let fnClass = Controller.extend("de.tammenit.ui5.AppAdminApp.controller.BaseController", {});
			BaseController.prototype.getMetadata = fnClass.prototype.getMetadata;

			super("de.tammenit.ui5.AppAdminApp.controller.BaseController");
		}

		public onInit(): void {
		}

		public getOwnerAppComponent(): de.tammenit.ui5.AppAdminApp.Component {
			// this double cast is weired but is documented here: https://basarat.gitbooks.io/typescript/docs/types/type-assertion.html
			let comp = this.getOwnerComponent() as any as de.tammenit.ui5.AppAdminApp.Component;
			return comp;
		}

		/**
		 * get the Router for this view
		 *
		 * @returns {*}
		 * @memberof BaseController
		 */
		getRouter(): any {
			return Component.getRouterFor(this);
		}

		getModel(sName?: string): sap.ui.model.json.JSONModel {
			if(sName) {
				return <sap.ui.model.json.JSONModel>this.getView().getModel(sName);
			} else {
				return <sap.ui.model.json.JSONModel>this.getView().getModel();
			}
		}

		getResourceBundle(): {getText(value: string): string, setText(value: string): void} {
			return (<sap.ui.model.resource.ResourceModel>this.getOwnerAppComponent().getModel("i18n")).getResourceBundle()
		}

		onNavBack(): void {
			var oHistory, sPreviousHash;

			oHistory = History.getInstance();
			sPreviousHash = oHistory.getPreviousHash();

			if (sPreviousHash !== undefined) {
				window.history.go(-1);
			} else {
				this.getRouter().navTo("RouteMain", {}, true /*no history*/);
			}
		}

	}

	return BaseController;

});