import com.vaadin.event.SelectionEvent; //导入依赖的package包/类
protected void onRowClick(final SelectionEvent event) {
    final Set<Object> itemsSelected = event.getSelected();
    if (!itemsSelected.isEmpty()) {
        popualateKeyValue(itemsSelected.iterator().next());
        addIcon.setEnabled(true);
    } else {
        clearFields();
        if (hasCreatePermission()) {
            enableEditing();
            addIcon.setEnabled(false);
        } else {
            keyTextField.setEnabled(false);
            valueTextArea.setEnabled(false);
        }
    }
    metadataWindow.setSaveButtonEnabled(false);
}
 

import com.vaadin.event.SelectionEvent; //导入依赖的package包/类
/**
 * Init Grid Selection Listeners
 */
private void initSelectionListeners() {
	grid.addSelectionListener(new SelectionListener() {

		/**
		 * 
		 */
		private static final long serialVersionUID = 7630487081608214268L;

		@Override
		public void select(SelectionEvent event) {
			Set<Object> itemIDs = event.getSelected();
			if (itemIDs.isEmpty()) {
				label.setValue("");
			} else {
				StringBuilder renderingText = new StringBuilder();
				for (Object itemID : itemIDs) {
					Customer customer = (Customer) itemID;
					renderingText.append("Customer with ID - "
							+ customer.getCustomerID() + " and Name - "
							+ customer.getCustomerName() + "<br/>");
				}
				label.setValue(renderingText.toString());
			}

		}
	});
}
 

import com.vaadin.event.SelectionEvent; //导入依赖的package包/类
@Override
public void select(SelectionEvent selectionEvent) {
    if (selectionEvent.getSelected().iterator().hasNext()) {
        navigation.setCurrentItemId(selectionEvent.getSelected().iterator().next());
    } else {
        navigation.setCurrentItemId(null);

    }
}
 

import com.vaadin.event.SelectionEvent; //导入依赖的package包/类
public SampleCrudView() {
    setSizeFull();
    addStyleName("crud-view");
    HorizontalLayout topLayout = createTopBar();

    grid = new ProductGrid();
    grid.addSelectionListener(new SelectionListener() {

        @Override
        public void select(SelectionEvent event) {
            viewLogic.rowSelected(grid.getSelectedRow());
        }
    });

    form = new ProductForm(viewLogic);
    form.setCategories(DataService.get().getAllCategories());

    VerticalLayout barAndGridLayout = new VerticalLayout();
    barAndGridLayout.addComponent(topLayout);
    barAndGridLayout.addComponent(grid);
    barAndGridLayout.setMargin(true);
    barAndGridLayout.setSpacing(true);
    barAndGridLayout.setSizeFull();
    barAndGridLayout.setExpandRatio(grid, 1);
    barAndGridLayout.setStyleName("crud-main-layout");

    addComponent(barAndGridLayout);
    addComponent(form);

    viewLogic.init();
}
 

import com.vaadin.event.SelectionEvent; //导入依赖的package包/类
protected void rowSelected(SelectionEvent event) {
    Collection<Object> packages = event.getSelected();
    enableDisableButtonsForSelectionSize(packages.size());
    disableFinalizeIfPackageAlreadyReleased(packages);
}