Verify origin and type of postMessage in select-dialog

src/components/select-dialog.tsx

@@ -32,9 +32,10 @@ class SelectDialog extends React.Component<DialogProps, DialogState> {
 	}
 
 	handlePostMessage = ( event: MessageEvent ) => {
-		console.log( 'PostMessage recieved:', event.data );
+		if (event.origin === baseUrl && event.data.type === 'cog-form-selected') {
 			this.props.onSelectForm( event.data );
-		this.setState({ isOpen: false });
+			this.setState({ isOpen: false }); // Close Dialog
+		}
 	}
 
 	render() {

src/globals.ts

@@ -1 +1 @@
-export const baseUrl: string = '//forms.cognito.test';
+export const baseUrl: string = 'https://forms.cognito.test';