Corrects setLayout and layout when central widget is set on QMainWindow

src/lib/QtGui/QWidget/index.ts

@@ -33,9 +33,9 @@ export abstract class NodeWidget extends EventWidget {
   setMouseTracking = (isMouseTracked: boolean) => {
     this.native.setMouseTracking(isMouseTracked);
   };
-  setEnabled = (enabled: boolean)=>{
+  setEnabled = (enabled: boolean) => {
     this.native.setEnabled(enabled);
-  }
+  };
 }
 
 export class QWidget extends NodeWidget {

src/lib/QtWidgets/QMainWindow/index.ts

@@ -3,13 +3,14 @@ import { NodeWidget } from "../../QtGui/QWidget";
 import { BaseWidgetEvents } from "../../core/EventWidget";
 import { FlexNode } from "../../core/YogaWidget";
 import { NativeElement } from "../../core/Component";
+import { NodeLayout } from "../QLayout";
 
 export const QMainWindowEvents = Object.freeze({
   ...BaseWidgetEvents
 });
 export class QMainWindow extends NodeWidget {
   native: NativeElement;
-  protected centralWidget?: NodeWidget;
+  public centralWidget?: NodeWidget;
   constructor(parent?: NodeWidget) {
     let native;
     if (parent) {
@@ -23,8 +24,8 @@ export class QMainWindow extends NodeWidget {
     // bind member functions
     this.setCentralWidget.bind(this);
     this.setFixedSize.bind(this);
+    this.setLayout = this._setLayout.bind(this);
   }
-
   setCentralWidget(widget: NodeWidget) {
     this.centralWidget = widget;
     this.native.setCentralWidget(
@@ -32,6 +33,20 @@ export class QMainWindow extends NodeWidget {
       widget.getFlexNode()
     );
   }
+  get layout() {
+    if (this.centralWidget) {
+      return this.centralWidget.layout;
+    } else {
+      return super.layout;
+    }
+  }
+  private _setLayout(parentLayout: NodeLayout) {
+    if (this.centralWidget) {
+      return this.centralWidget.setLayout(parentLayout);
+    } else {
+      return super.setLayout(parentLayout);
+    }
+  }
   setFixedSize(width: number, height: number) {
     this.native.setFixedSize(width, height);
   }