private void performExit()

in app/src/main/java/com/oracle/javafx/scenebuilder/app/SceneBuilderApp.java [710:790]
65 lines of code
15 McCabe index (conditional complexity)

    private void performExit() {

        // Check if an editing session is on going
        for (DocumentWindowController dwc : windowList) {
            if (dwc.getEditorController().isTextEditingSessionOnGoing()) {
                // Check if we can commit the editing session
                if (dwc.getEditorController().canGetFxmlText() == false) {
                    // Commit failed
                    return;
                }
            }
        }

        // Collects the documents with pending changes
        final List<DocumentWindowController> pendingDocs = new ArrayList<>();
        for (DocumentWindowController dwc : windowList) {
            if (dwc.isDocumentDirty()) {
                pendingDocs.add(dwc);
            }
        }

        // Notifies the user if some documents are dirty
        final boolean exitConfirmed;
        switch (pendingDocs.size()) {
            case 0: {
                exitConfirmed = true;
                break;
            }

            case 1: {
                final DocumentWindowController dwc0 = pendingDocs.get(0);
                exitConfirmed = dwc0.performCloseAction() == ActionStatus.DONE;
                break;
            }

            default: {
                assert pendingDocs.size() >= 2;

                final AlertDialog d = new AlertDialog(null);
                d.setMessage(I18N.getString("alert.review.question.message", pendingDocs.size()));
                d.setDetails(I18N.getString("alert.review.question.details"));
                d.setOKButtonTitle(I18N.getString("label.review.changes"));
                d.setActionButtonTitle(I18N.getString("label.discard.changes"));
                d.setActionButtonVisible(true);

                switch (d.showAndWait()) {
                    default:
                    case OK: { // Review
                        int i = 0;
                        ActionStatus status;
                        do {
                            status = pendingDocs.get(i++).performCloseAction();
                        } while ((status == ActionStatus.DONE) && (i < pendingDocs.size()));
                        exitConfirmed = (status == ActionStatus.DONE);
                        break;
                    }
                    case CANCEL: {
                        exitConfirmed = false;
                        break;
                    }
                    case ACTION: { // Do not review
                        exitConfirmed = true;
                        break;
                    }
                }
                break;
            }
        }

        // Exit if confirmed
        if (exitConfirmed) {
            for (DocumentWindowController dwc : new ArrayList<>(windowList)) {
                // Write to java preferences before closing
                dwc.updatePreferences();
                documentWindowRequestClose(dwc);
            }
            logTimestamp(ACTION.STOP);
            // TODO (elp): something else here ?
            Platform.exit();
        }
    }