Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package ed.cracken.pos.ui.seller; import com.vaadin.event.FieldEvents; import com.vaadin.event.SelectionEvent; import com.vaadin.navigator.View; import com.vaadin.navigator.ViewChangeListener; import com.vaadin.server.FontAwesome; import com.vaadin.shared.ui.label.ContentMode; import com.vaadin.ui.Alignment; import com.vaadin.ui.Button; import com.vaadin.ui.CssLayout; import com.vaadin.ui.HorizontalLayout; import com.vaadin.ui.Label; import com.vaadin.ui.TextField; import com.vaadin.ui.UI; import com.vaadin.ui.VerticalLayout; import com.vaadin.ui.themes.ValoTheme; import ed.cracken.pos.ui.helpers.DataFormatHelper; import ed.cracken.pos.ui.seller.to.ItemTo; import ed.cracken.pos.ui.seller.to.SellSummaryTo; import java.math.BigDecimal; /** * * @author edcracken */ public final class SellerView extends CssLayout implements View { public static final String VIEW_NAME = "Ventas"; private Button addProductBtn; private TextField productCode; private Label total; private Label totalValue; private Label quantity; private Label quantityValue; private Button saveTrx; private Button cancelTrx; private final SellerGrid grid; private final SellerLogic viewLogic; private final SellSummaryTo summary; private final SellerPaymentView paymentView; private final SellItemForm sellItemForm; public SellerView() { summary = SellSummaryTo.builder().count(BigDecimal.ZERO).total(BigDecimal.ZERO).build(); setSizeFull(); addStyleName("crud-view"); viewLogic = new SellerLogic(this); paymentView = new SellerPaymentView(); grid = new SellerGrid(); grid.addSelectionListener((SelectionEvent event) -> { viewLogic.editItem(grid.getSelectedRow()); }); VerticalLayout barAndGridLayout = new VerticalLayout(); HorizontalLayout foot; barAndGridLayout.addComponent(createTopBar()); barAndGridLayout.addComponent(grid); barAndGridLayout.addComponent(foot = createFooter()); barAndGridLayout.setMargin(true); barAndGridLayout.setSpacing(true); barAndGridLayout.setSizeFull(); barAndGridLayout.setExpandRatio(grid, 1); barAndGridLayout.setStyleName("crud-main-layout"); barAndGridLayout.setComponentAlignment(foot, Alignment.TOP_CENTER); addComponent(barAndGridLayout); addComponent(sellItemForm = new SellItemForm(viewLogic)); } public void editItem(ItemTo item) { if (item != null) { sellItemForm.addStyleName("visible"); sellItemForm.setEnabled(true); } else { sellItemForm.removeStyleName("visible"); sellItemForm.setEnabled(false); } sellItemForm.editItem(item); } public void updateItem(ItemTo item) { grid.refresh(item); sellItemForm.removeStyleName("visible"); sellItemForm.setEnabled(false); } public void cancelItemEdit() { sellItemForm.removeStyleName("visible"); sellItemForm.setEnabled(false); } public void removeItem(ItemTo item) { grid.remove(item); sellItemForm.removeStyleName("visible"); sellItemForm.setEnabled(false); } /** * top bar includes product's code * * @return */ public HorizontalLayout createTopBar() { productCode = new TextField(); productCode.setStyleName("filter-textfield"); productCode.setInputPrompt("Codigo Producto"); productCode.setImmediate(true); productCode.addTextChangeListener((FieldEvents.TextChangeEvent event) -> { if (!event.getText().isEmpty()) { viewLogic.findAndAddProduct(event.getText()); } }); addProductBtn = new Button("Buscar"); addProductBtn.setIcon(FontAwesome.SEARCH); addProductBtn.addStyleName(ValoTheme.BUTTON_PRIMARY); addProductBtn.setIcon(FontAwesome.PLUS_CIRCLE); addProductBtn.addClickListener((Button.ClickEvent event) -> { if (!productCode.getValue().isEmpty()) { viewLogic.findAndAddProduct(productCode.getValue()); } }); HorizontalLayout topLayout = new HorizontalLayout(productCode, addProductBtn); topLayout.setStyleName("top-bar"); topLayout.setSpacing(true); return topLayout; } private void refreshInternal() { totalValue.setValue("<h2><strong>" + DataFormatHelper.formatNumber(summary.getTotal()) + "</strong></h2>"); quantityValue .setValue("<h2><strong>" + DataFormatHelper.formatNumber(summary.getCount()) + "</strong></h2>"); } public HorizontalLayout createFooter() { total = new Label("<h2><strong>Total:</strong></h2>"); total.setContentMode(ContentMode.HTML); totalValue = new Label("<h2><strong>" + DataFormatHelper.formatNumber(BigDecimal.ZERO) + "</strong></h2>"); totalValue.setContentMode(ContentMode.HTML); quantity = new Label("<h2><strong>Cantidad:</strong></h2>"); quantity.setContentMode(ContentMode.HTML); quantityValue = new Label( "<h2><strong>" + DataFormatHelper.formatNumber(BigDecimal.ZERO) + "</strong></h2>"); quantityValue.setContentMode(ContentMode.HTML); saveTrx = new Button("Guardar", FontAwesome.CHECK_CIRCLE_O); saveTrx.addStyleName(ValoTheme.BUTTON_PRIMARY); saveTrx.setHeight("60px"); saveTrx.addClickListener((Button.ClickEvent event) -> { UI.getCurrent().addWindow(paymentView); }); cancelTrx = new Button("Cancelar", FontAwesome.CLOSE); cancelTrx.addStyleName(ValoTheme.BUTTON_DANGER); cancelTrx.setHeight("60px"); HorizontalLayout bottom = new HorizontalLayout(); HorizontalLayout labelsArea = new HorizontalLayout(); HorizontalLayout buttonsArea = new HorizontalLayout(); labelsArea.setSpacing(true); labelsArea.addComponent(total); labelsArea.addComponent(totalValue); labelsArea.addComponent(quantity); labelsArea.addComponent(quantityValue); labelsArea.setComponentAlignment(total, Alignment.MIDDLE_LEFT); labelsArea.setComponentAlignment(totalValue, Alignment.MIDDLE_LEFT); labelsArea.setComponentAlignment(quantity, Alignment.MIDDLE_RIGHT); labelsArea.setComponentAlignment(quantityValue, Alignment.MIDDLE_RIGHT); buttonsArea.setSpacing(true); buttonsArea.addComponent(saveTrx); buttonsArea.addComponent(cancelTrx); bottom.setSpacing(true); bottom.addComponent(buttonsArea); bottom.addComponent(labelsArea); bottom.setComponentAlignment(buttonsArea, Alignment.MIDDLE_LEFT); bottom.setComponentAlignment(labelsArea, Alignment.MIDDLE_RIGHT); bottom.setWidth("100%"); return bottom; } public void addItem(ItemTo item) { grid.add(item); summary.setCount(summary.getCount().add(item.getQuantity())); summary.setTotal(summary.getTotal().add(item.getSubtotal())); refreshInternal(); } private void refreshFooter() { } /** * */ public void createFootBar() { saveTrx = new Button("Grabar"); } @Override public void enter(ViewChangeListener.ViewChangeEvent event) { System.out.println(">> entered"); } }