Examples with EntityManagerRunnable au.com.vaadinutils.dao.EntityManagerRunnable used on opensource projects

Example 1 with EntityManagerRunnable

use of au.com.vaadinutils.dao.EntityManagerRunnable in project VaadinUtils by rlsutton1.

the class BaseCrudView method initButtons.

private void initButtons() {
    actionNewButton.addClickListener(new ClickEventLogged.ClickListener() {

        private static final long serialVersionUID = 1L;

        @Override
        public void clicked(ClickEvent event) {
            if (isDirty()) {
                Notification.show("You must Save or Discard your changes first", Type.ERROR_MESSAGE);
                return;
            }
            newClicked();
        }
    });
    actionApplyButton.addClickListener(new ClickEventLogged.ClickListener() {

        private static final long serialVersionUID = 1L;

        @Override
        public void clicked(ClickEvent event) {
            final Object entityId = entityTable.getValue();
            if (entityId != null) {
                @SuppressWarnings("unchecked") CrudAction<E> action = (CrudAction<E>) actionCombo.getValue();
                if (action != null) {
                    if (action.showPreparingDialog()) {
                        performActionWithWaitDialog(entityId, action);
                    } else {
                        performAction(entityId, action);
                    }
                } else {
                    Notification.show("Please select an Action first.");
                }
            } else {
                Notification.show("Please select record first.");
            }
        }

        private void performAction(final Object entityId, final CrudAction<E> action) {
            EntityItem<E> entity = container.getItem(entityId);
            if (interceptAction(action, entity)) {
                action.exec(BaseCrudView.this, entity);
            }
            container.commit();
            container.refreshItem(entity.getItemId());
        // actionCombo.select(actionCombo.getNullSelectionItemId());
        }

        private void performActionWithWaitDialog(final Object entityId, final CrudAction<E> action) {
            final ConfirmDialog pleaseWaitMessage = createPleaseWaitDialog();
            if (action != null) {
                // we have to delay, because if we try to close the window
                // before it's created - that won't work.
                final ScheduledExecutorService exec = Executors.newScheduledThreadPool(1);
                final EntityManagerRunnable runner = invokeAction(entityId, pleaseWaitMessage, action);
                exec.schedule(runner, 1, TimeUnit.SECONDS);
                exec.shutdown();
                UI.getCurrent().setPollInterval(500);
            }
        }

        private EntityManagerRunnable invokeAction(final Object entityId, final ConfirmDialog pleaseWaitMessage, final CrudAction<E> action) {
            final EntityManagerRunnable runner = new EntityManagerRunnable(new RunnableUI(UI.getCurrent()) {

                @Override
                protected void run(final UI ui) {
                    ui.access(new Runnable() {

                        @Override
                        public void run() {
                            try {
                                EntityItem<E> entity = container.getItem(entityId);
                                if (interceptAction(action, entity)) {
                                    action.exec(BaseCrudView.this, entity);
                                }
                                container.commit();
                                container.refreshItem(entity.getItemId());
                            // actionCombo.select(actionCombo.getNullSelectionItemId());
                            } finally {
                                pleaseWaitMessage.close();
                                ui.setPollInterval(-1);
                            }
                        }
                    });
                }
            });
            return runner;
        }

        private ConfirmDialog createPleaseWaitDialog() {
            final ConfirmDialog pleaseWaitMessage = ConfirmDialog.show(UI.getCurrent(), "Please wait...", new ConfirmDialog.Listener() {

                private static final long serialVersionUID = 1L;

                @Override
                public void onClose(ConfirmDialog dialog) {
                }
            });
            pleaseWaitMessage.setClosable(false);
            pleaseWaitMessage.getCancelButton().setVisible(false);
            pleaseWaitMessage.getOkButton().setVisible(false);
            pleaseWaitMessage.setModal(true);
            pleaseWaitMessage.setCaption("Preparing Action");
            return pleaseWaitMessage;
        }
    });
}