re-attempt receiving key after registering device

src/main/java/org/cryptomator/ui/keyloading/hub/ReceiveKeyController.java

@@ -78,7 +78,11 @@ public class ReceiveKeyController implements FxController {
 
 	@FXML
 	public void initialize() {
-		requestApiConfig(); // FIXME: only called once - need to restart after returning from register device
+		receiveKey();
+	}
+
+	public void receiveKey() {
+		requestApiConfig();
 	}
 
 	/**

src/main/java/org/cryptomator/ui/keyloading/hub/RegisterSuccessController.java

@@ -1,24 +1,43 @@
 package org.cryptomator.ui.keyloading.hub;
 
+import dagger.Lazy;
 import org.cryptomator.ui.common.FxController;
+import org.cryptomator.ui.common.FxmlFile;
+import org.cryptomator.ui.common.FxmlScene;
 import org.cryptomator.ui.keyloading.KeyLoading;
 
 import javax.inject.Inject;
 import javafx.fxml.FXML;
+import javafx.scene.Scene;
 import javafx.stage.Stage;
+import javafx.stage.WindowEvent;
+import java.util.concurrent.CompletableFuture;
 
 public class RegisterSuccessController implements FxController {
 
 	private final Stage window;
+	private final CompletableFuture<ReceivedKey> result;
+	private final Lazy<Scene> receiveKeyScene;
+	private final ReceiveKeyController receiveKeyController;
 
 	@Inject
-	public RegisterSuccessController(@KeyLoading Stage window) {
+	public RegisterSuccessController(@KeyLoading Stage window, CompletableFuture<ReceivedKey> result, @FxmlScene(FxmlFile.HUB_RECEIVE_KEY) Lazy<Scene> receiveKeyScene, ReceiveKeyController receiveKeyController) {
 		this.window = window;
+		this.result = result;
+		this.receiveKeyScene = receiveKeyScene;
+		this.receiveKeyController = receiveKeyController;
+		this.window.addEventHandler(WindowEvent.WINDOW_HIDING, this::windowClosed);
 	}
 
 	@FXML
-	public void close() {
-		window.close();
+	public void complete() {
+		window.setScene(receiveKeyScene.get());
+		receiveKeyController.receiveKey();
 	}
 
+	private void windowClosed(WindowEvent windowEvent) {
+		result.cancel(true);
+	}
+
+
 }

src/main/resources/fxml/hub_register_success.fxml

@@ -41,9 +41,9 @@
 			<Label text="%hub.registerSuccess.description" wrapText="true"/>
 
 			<Region VBox.vgrow="ALWAYS" minHeight="18"/>
-			<ButtonBar buttonMinWidth="120" buttonOrder="+C">
+			<ButtonBar buttonMinWidth="120" buttonOrder="+X">
 				<buttons>
-					<Button text="%generic.button.close" ButtonBar.buttonData="CANCEL_CLOSE" defaultButton="true" onAction="#close"/>
+					<Button text="%generic.button.next" ButtonBar.buttonData="NEXT_FORWARD" defaultButton="true" onAction="#complete"/>
 					<!-- TODO: add request access button -->
 				</buttons>
 			</ButtonBar>