JavaFX thread bug fix

Author: georgweiss

app/logbook/olog/ui/src/main/java/org/phoebus/logbook/olog/ui/write/LogEntryEditorController.java

@@ -27,6 +27,8 @@
 import javafx.beans.property.SimpleBooleanProperty;
 import javafx.beans.property.SimpleObjectProperty;
 import javafx.beans.property.SimpleStringProperty;
+import javafx.beans.property.StringProperty;
+import javafx.beans.value.ObservableStringValue;
 import javafx.collections.FXCollections;
 import javafx.collections.ListChangeListener;
 import javafx.collections.ObservableList;
@@ -208,7 +210,7 @@ public class LogEntryEditorController {
     private final ObservableList<String> availableLevels = FXCollections.observableArrayList();
     private final SimpleStringProperty titleProperty = new SimpleStringProperty();
     private final SimpleStringProperty descriptionProperty = new SimpleStringProperty();
-    private final SimpleStringProperty selectedLevelProperty = new SimpleStringProperty();
+    private final StringProperty selectedLevelProperty = new SimpleStringProperty();
     private final SimpleStringProperty usernameProperty = new SimpleStringProperty();
     private final SimpleStringProperty passwordProperty = new SimpleStringProperty();
 
@@ -830,11 +832,11 @@ private void getServerSideStaticData() {
             Optional<LogEntryLevel> optionalLevel = levels.stream().filter(LogEntryLevel::defaultLevel).findFirst();
             String defaultLevel = null;
             if(optionalLevel.isPresent()){
-                // One level value should be the default level
+                // One level value *should* be the default level
                defaultLevel = optionalLevel.get().name();
             }
             selectedLevelProperty.set(logEntry.getLevel() != null ? logEntry.getLevel() : defaultLevel);
-            levelSelector.getSelectionModel().select(selectedLevelProperty.get());
+            Platform.runLater(() -> levelSelector.getSelectionModel().select(selectedLevelProperty.get()));
         });
     }