#174 - Hide client connection state icon if no connections are configured

PlayWallPlugins/PlayWallPluginWebAPI/src/main/java/de/tobias/playpad/plugin/api/client/WebApiRemoteConnectionStateListener.java

 package de.tobias.playpad.plugin.api.client;
 
+import com.neovisionaries.ws.client.WebSocketException;
 import com.neovisionaries.ws.client.WebSocketState;
+import de.thecodelabs.logger.Logger;
+import de.thecodelabs.utils.threading.Worker;
 import de.thecodelabs.utils.ui.icon.FontAwesomeType;
 import de.thecodelabs.utils.ui.icon.FontIcon;
 import de.thecodelabs.utils.util.Localization;
@@ -8,13 +11,18 @@ import de.tobias.playpad.api.PlayPadClient;
 import de.tobias.playpad.plugin.MainWindowListener;
 import de.tobias.playpad.plugin.api.WebApiPlugin$;
 import de.tobias.playpad.viewcontroller.main.IMainViewController;
+import javafx.application.Platform;
 import javafx.beans.InvalidationListener;
 import javafx.beans.binding.Bindings;
 import javafx.beans.property.IntegerProperty;
 import javafx.beans.property.ObjectProperty;
 import javafx.beans.property.SimpleIntegerProperty;
 import javafx.scene.control.Tooltip;
+import javafx.scene.input.MouseEvent;
 
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.stream.Collectors;
 
 public class WebApiRemoteConnectionStateListener implements MainWindowListener {
@@ -28,8 +36,8 @@ public class WebApiRemoteConnectionStateListener implements MainWindowListener {
 
 		connectedProperty = new SimpleIntegerProperty(0);
 		connectedProperty.addListener((observable, oldValue, newValue) -> {
+			Platform.runLater(() -> {
 				boolean allConnected = newValue.intValue() == 0;
-
 				connectionStateIcon.setIcons(allConnected ? FontAwesomeType.CLOUD : FontAwesomeType.EXCLAMATION_CIRCLE);
 				if (!allConnected) {
 					final String disconnectedServers = WebApiPlugin$.MODULE$.connections().entrySet().stream()
@@ -42,8 +50,13 @@ public class WebApiRemoteConnectionStateListener implements MainWindowListener {
 					connectionStateIcon.setStyle("");
 				}
 			});
+		});
 
-		WebApiPlugin$.MODULE$.connections().addListener((InvalidationListener) observable -> createConnectionStateBinding());
+		WebApiPlugin$.MODULE$.connections().addListener((InvalidationListener) observable -> {
+			createConnectionStateBinding();
+			connectionStateIcon.setVisible(!WebApiPlugin$.MODULE$.connections().isEmpty());
+		});
+		connectionStateIcon.setVisible(!WebApiPlugin$.MODULE$.connections().isEmpty());
 		createConnectionStateBinding();
 	}