Resolve "supprimer un des emplacements parents"

Closes #8 (closed)

src/main/java/fr/inra/po2vocabmanager/utils/VocabTreeCell.java

@@ -256,6 +256,41 @@ public class VocabTreeCell extends TextFieldTreeCell<VocabConcept> {
                     deprecatedNode.disableProperty().bind(Bindings.not(mainApp.getEditProperty()));
                     menu.getItems().add(deprecatedNode);
 
+                    if(item.getFathers().size() > 1) {
+                        MenuItem removeNodeFromOneParent = new MenuItem("Remove " + item.getName() + " from one parent");
+                        removeNodeFromOneParent.setOnAction(event -> {
+                            Dialog selectParent = new Dialog();
+                            selectParent.setTitle(item.getName() + " have multiple parents");
+                            DialogPane dp = selectParent.getDialogPane();
+                            VBox box = new VBox();
+                            Label l = new Label("This concept have " + item.getFathers().size() + " parents.\nPlease select from which parents you want to remove this concept.\n\n");
+                            box.getChildren().add(l);
+                            VocabConcept parentToRemoveFrom = null;
+                            ToggleGroup group = new ToggleGroup();
+                            for (VocabConcept p : item.getFathers()) {
+                                RadioButton b = new RadioButton(p.getName());
+                                b.setUserData(p);
+                                b.setToggleGroup(group);
+                                box.getChildren().add(b);
+                            }
+                            dp.setContent(box);
+                            dp.getButtonTypes().addAll(ButtonType.CANCEL, ButtonType.OK);
+                            selectParent.initOwner(MainApp.primaryStage);
+                            Optional<ButtonType> click = selectParent.showAndWait();
+
+                            if (click.isPresent() && click.get().getButtonData().equals(ButtonBar.ButtonData.OK_DONE)) {
+                                if(group.getSelectedToggle() != null) {
+                                    VocabConcept p = (VocabConcept) group.getSelectedToggle().getUserData();
+                                    p.getSubNode().removeAll(item);
+                                    item.getFathers().remove(p);
+                                    MainApp.getOntologyControler().modified(true);
+                                }
+                            }
+                        });
+                        removeNodeFromOneParent.disableProperty().bind(Bindings.not(mainApp.getEditProperty()));
+                        menu.getItems().add(removeNodeFromOneParent);
+                    }
+
                 } else {
                     if (item.isDeletable() && item.getDeprecated()) {
                         MenuItem deleteNode = new MenuItem("Delete " + item.getName());