handle validation in own thread

src/main/java/ninja/javafx/smartcsv/fx/table/model/CSVModel.java

@@ -28,6 +28,8 @@ package ninja.javafx.smartcsv.fx.table.model;
 
 import javafx.collections.FXCollections;
 import javafx.collections.ObservableList;
+import javafx.concurrent.Service;
+import javafx.concurrent.Task;
 import ninja.javafx.smartcsv.validation.ValidationConfiguration;
 import ninja.javafx.smartcsv.validation.ValidationError;
 import ninja.javafx.smartcsv.validation.Validator;
@@ -49,6 +51,7 @@ public class CSVModel {
     private ObservableList<CSVRow> rows = FXCollections.observableArrayList();
     private String[] header;
     private ObservableList<ValidationError> validationError  = FXCollections.observableArrayList();
+    private RevalidationService revalidationService = new RevalidationService();
 
     /**
      * sets the validator configuration for the data revalidates
@@ -111,6 +114,41 @@ public class CSVModel {
 
         if (!hasValidator()) return;
 
+        revalidationService.setHeader(header);
+        revalidationService.setRows(rows);
+        revalidationService.setValidator(validator);
+        revalidationService.setOnSucceeded(t -> validationError.setAll(revalidationService.getValue()));
+        revalidationService.setOnFailed(t -> logger.error("revalidation service failed!"));
+        revalidationService.restart();
+    }
+
+    private boolean hasValidator() {
+        return validator != null && validator.hasConfig();
+    }
+
+    private static class RevalidationService extends Service<List<ValidationError>> {
+
+        private Validator validator;
+        private List<CSVRow> rows;
+        private String[] header;
+
+        public void setValidator(Validator validator) {
+            this.validator = validator;
+        }
+
+        public void setRows(List<CSVRow> rows) {
+            this.rows = rows;
+        }
+
+        public void setHeader(String[] header) {
+            this.header = header;
+        }
+
+        @Override
+        protected Task<List<ValidationError>> createTask() {
+            return new Task<List<ValidationError>>() {
+                @Override
+                protected List<ValidationError> call() throws Exception {
                     List<ValidationError> errors = new ArrayList<>();
 
                     if (header != null) {
@@ -141,12 +179,10 @@ public class CSVModel {
                             }
                         }
                     }
-
-        validationError.setAll(errors);
+                    return errors;
+                }
+            };
         }
-
-    private boolean hasValidator() {
-        return validator != null && validator.hasConfig();
     }
 
 }