connection toggle tooltip

src/main/java/com/sparrowwallet/sparrow/AppController.java

@@ -234,6 +234,7 @@ public class AppController implements Initializable {
         });
 
         onlineProperty.bindBidirectional(serverToggle.selectedProperty());
+        onlineProperty().addListener((observable, oldValue, newValue) -> serverToggle.setTooltip(new Tooltip(newValue ? "Connected to " + Config.get().getElectrumServer() : "Disconnected")));
 
         Config config = Config.get();
         connectionService = createConnectionService();

src/main/resources/com/sparrowwallet/sparrow/app.fxml

@@ -76,7 +76,11 @@
 
         <StatusBar fx:id="statusBar" text="" minHeight="36">
             <rightItems>
-                <UnlabeledToggleSwitch fx:id="serverToggle" />
+                <UnlabeledToggleSwitch fx:id="serverToggle">
+                    <tooltip>
+                        <Tooltip text="Disconnected" />
+                    </tooltip>
+                </UnlabeledToggleSwitch>
             </rightItems>
         </StatusBar>
     </children>