我想设置可编辑以下代码的quantityColumn：
public class ControladorView implements Initializable {
@FXML private MenuItem mNew, mOpen, mSave, mPrint;
@FXML
private MenuButton mCategory;
@FXML private Button bAccept, bCancel, bAdd, bRemove, bClear;
@FXML private TableView tableViewItem;
@FXML private TableColumn<Product, String> nameItemColumn;
@FXML private TableColumn<Product, Double> priceColumn;
@FXML private TableColumn<Product, Integer> availableColumn;
private ObservableList<Product> itemData;
@FXML private TableView tableViewBudget;
@FXML private TableColumn<Product, String> nameBudgetColumn;
@FXML private TableColumn<Product, Double> outTaxColumn;
@FXML private TableColumn<Product, Double> inTaxColumn;
@FXML private TableColumn<Product, Integer> quantityColumn;
private ObservableList<Product> budgetData;
@FXML private TextField tFName, tFMin, tFMax;
@Override
public void initialize(URL location, ResourceBundle resources) {
//Items Table
nameItemColumn.setCellValueFactory(
new PropertyValueFactory<>("description"));
priceColumn.setCellValueFactory(
new PropertyValueFactory<>("price"));
availableColumn.setCellValueFactory(
new PropertyValueFactory<>("stock"));
//Se utiliza para Añadir
itemData = FXCollections.observableArrayList();
//Budget Table
nameBudgetColumn.setCellValueFactory(
new PropertyValueFactory<>("description"));
inTaxColumn.setCellValueFactory(
new PropertyValueFactory<>("price"));
outTaxColumn.setCellValueFactory(cellData ->
new SimpleDoubleProperty(cellData.getValue().getPrice() * 0.79 ).asObject());
nameBudgetColumn.setCellFactory(tc -> new TextFieldTableCell<>());
//Se utiliza para Eliminar y Limpiar
budgetData = FXCollections.observableArrayList();
tableViewBudget.setItems(budgetData);
//Bindings Filter
final BooleanBinding noFiltOp = Bindings.equal(mCategory.textProperty(), "Categoría").or(
Bindings.equal(mCategory.textProperty(), "Categoría").and(
Bindings.isEmpty(tFMin.textProperty())).and(
Bindings.isEmpty(tFMax.textProperty()))).or(
Bindings.equal(mCategory.textProperty(), "Categoría").and(
Bindings.isEmpty(tFName.textProperty()))).or(
Bindings.equal(mCategory.textProperty(), "Categoría").and(
Bindings.isEmpty(tFName.textProperty())).and(
Bindings.isEmpty(tFMin.textProperty())).and(
Bindings.isEmpty(tFMax.textProperty())));
final BooleanBinding noCancel = Bindings.isEmpty(tFName.textProperty()).and(
Bindings.equal(mCategory.textProperty(), "Categoría")).and(
Bindings.isEmpty(tFMin.textProperty())).and(
Bindings.isEmpty(tFMax.textProperty()));
//Bindings Item
final BooleanBinding noItemSelectedI = Bindings.isNull(
tableViewItem.getSelectionModel().selectedItemProperty());
//Bindings Budget
final BooleanBinding noItemSelectedB = Bindings.isNull(
tableViewBudget.getSelectionModel().selectedItemProperty());
final BooleanBinding emptyBudget = Bindings.isEmpty(tableViewBudget.getItems());
//Disable buttons
bAccept.disableProperty().bind(noFiltOp);
bCancel.disableProperty().bind(noCancel);
bAdd.disableProperty().bind(noItemSelectedI);
bRemove.disableProperty().bind(noItemSelectedB);
bClear.disableProperty().bind(emptyBudget);
}
@FXML
private void onSelect(ActionEvent event) {
mCategory.setText(((MenuItem) event.getSource()).getText());
}
@FXML
private void onAccept(ActionEvent event) {
Category op = Product.Category.POWER_SUPPLY;
switch(mCategory.getText()) {
case "Placas Base": op = Product.Category.MOTHERBOARD; break;
case "Procesadores": op = Product.Category.CPU; break;
case "Memorias RAM": op = Product.Category.RAM; break;
case "Tarjetas gráficas": op = Product.Category.GPU; break;
case "HDD": op = Product.Category.HDD; break;
case "SSD": op = Product.Category.HDD_SSD; break;
case "Torres": op = Product.Category.CASE; break;
case "Teclados": op = Product.Category.KEYBOARD; break;
case "Ratones": op = Product.Category.MOUSE; break;
case "Monitores": op = Product.Category.SCREEN; break;
case "Altavoces": op = Product.Category.SPEAKER; break;
case "Multilectores": op = Product.Category.MULTIREADER; break;
case "Grabadoras": op = Product.Category.DVD_WRITER; break;
case "Ventiladores": op = Product.Category.FAN; break;
}
//Condiciones (true) para metodos Database
final boolean cat = !mCategory.getText().equals("Categoría"),
des = !tFName.getText().isEmpty(),
min = !tFMin.getText().isEmpty(),
max = !tFMax.getText().isEmpty();
if(cat && des && min && max)
tableViewItem.getItems().setAll(
Database.getProductByCategoryDescriptionAndPrice(
op, tFName.getText(), Double.parseDouble(tFMin.getText()),
Double.parseDouble(tFMax.getText()), true));
else if(cat && min && max)
tableViewItem.getItems().setAll(
Database.getProductByCategoryAndPrice(
op, Double.parseDouble(tFMin.getText()),
Double.parseDouble(tFMax.getText()), true));
else if(cat && des)
tableViewItem.getItems().setAll(
Database.getProductByCategoryAndDescription(
op, tFName.getText(), true));
else tableViewItem.getItems().setAll(Database.getProductByCategory(op));
}
@FXML
private void onCancel(ActionEvent event) {
tFName.clear();
mCategory.setText("Categoría");
tFMin.clear();
tFMax.clear();
tableViewItem.getItems().clear();
}
@FXML
private void onAdd(ActionEvent event) {
Product prod =
((Product) tableViewItem.getSelectionModel().selectedItemProperty().getValue());
if(!budgetData.isEmpty()) {
Product[] elArray = new Product[budgetData.size()];
elArray = budgetData.toArray(elArray);
Category cat = prod.getCategory();
try {
int i = 0;
while(!elArray[i].getCategory().equals(cat)) i++;
} catch(ArrayIndexOutOfBoundsException e) {
budgetData.add(prod);
}
} else budgetData.add(prod);
}
@FXML
private void onRemove(ActionEvent event) {
budgetData.remove(tableViewBudget.getSelectionModel().getSelectedIndex());
}
@FXML
private void onClear(ActionEvent event) {
tableViewBudget.getItems().clear();
}
}
我尝试了很多事情，但总是在ClassCastException和Product之间抛出Producto（Product无法投放到Producto） 。所以我决定发布原始的控制器类。
产品类别：
public class Product {
public enum Category {
SPEAKER, HDD, HDD_SSD, POWER_SUPPLY, DVD_WRITER, RAM, SCREEN,
MULTIREADER, MOTHERBOARD, CPU, MOUSE, GPU, KEYBOARD, CASE, FAN
}
public Product(String description, double price, int stock, Category category) {
this.description = description;
this.price = price;
this.stock = stock;
this.category = category;
}
public Category getCategory() {
return category;
}
public String getDescription() {
return description;
}
public double getPrice() {
return price;
}
public int getStock() {
return stock;
}
private final String description;
private final double price;
private final int stock;
private final Category category;
}
产品类：
public class Producto extends Product {
private int cantidad;
public Producto(String description, double price, int stock, Category category) {
super(description, price, stock, category);
this.cantidad = 1;
}
public int getCantidad() {
return cantidad;
}
public void setCantidad(int i) {
cantidad = i;
}
}
FXML代码：
<?xml version="1.0" encoding="UTF-8"?>
<?import javafx.geometry.Insets?>
<?import javafx.scene.control.Accordion?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.Menu?>
<?import javafx.scene.control.MenuBar?>
<?import javafx.scene.control.MenuButton?>
<?import javafx.scene.control.MenuItem?>
<?import javafx.scene.control.TableColumn?>
<?import javafx.scene.control.TableView?>
<?import javafx.scene.control.TextField?>
<?import javafx.scene.control.TitledPane?>
<?import javafx.scene.layout.HBox?>
<?import javafx.scene.layout.VBox?>
<?import javafx.scene.text.Font?>
<VBox maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns="http://javafx.com/javafx/8.0.65" xmlns:fx="http://javafx.com/fxml/1" fx:controller="configuradordepc.controller.ControladorView">
<children>
<MenuBar>
<menus>
<Menu mnemonicParsing="false" text="Archivo">
<items>
<MenuItem fx:id="mNew" mnemonicParsing="false" text="Nuevo" />
<MenuItem fx:id="mOpen" mnemonicParsing="false" text="Abrir" />
<MenuItem fx:id="mSave" mnemonicParsing="false" text="Guardar" />
<MenuItem fx:id="mPrint" mnemonicParsing="false" text="Imprimir" />
</items>
</Menu>
</menus>
</MenuBar>
<Accordion VBox.vgrow="ALWAYS">
<panes>
<TitledPane animated="false" text="Nuevo PC">
<content>
<VBox fx:id="vBox" spacing="10.0">
<children>
<HBox spacing="10.0" VBox.vgrow="ALWAYS">
<children>
<VBox alignment="TOP_CENTER" spacing="10.0">
<children>
<Label text="Filtrar Productos">
<font>
<Font name="System Bold" size="12.0" />
</font>
</Label>
<HBox alignment="CENTER">
<children>
<Label prefWidth="87.0" text="Nombre" />
<TextField fx:id="tFName" HBox.hgrow="ALWAYS" />
</children>
</HBox>
<MenuButton fx:id="mCategory" maxWidth="1.7976931348623157E308" mnemonicParsing="false" text="Categoría">
<items>
<MenuItem fx:id="mMother" mnemonicParsing="false" onAction="#onSelect" text="Placas base" />
<MenuItem fx:id="mCPU" mnemonicParsing="false" onAction="#onSelect" text="Procesadores" />
<MenuItem fx:id="mRAM" mnemonicParsing="false" onAction="#onSelect" text="Memorias RAM" />
<MenuItem fx:id="mGPU" mnemonicParsing="false" onAction="#onSelect" text="Tarjetas gráficas" />
<MenuItem fx:id="mHDD" mnemonicParsing="false" onAction="#onSelect" text="HDD" />
<MenuItem fx:id="mSSD" mnemonicParsing="false" onAction="#onSelect" text="SSD" />
<MenuItem fx:id="mCase" mnemonicParsing="false" onAction="#onSelect" text="Torres" />
<MenuItem fx:id="mKey" mnemonicParsing="false" onAction="#onSelect" text="Teclados" />
<MenuItem fx:id="mMouse" mnemonicParsing="false" onAction="#onSelect" text="Ratones" />
<MenuItem fx:id="mScreen" mnemonicParsing="false" onAction="#onSelect" text="Monitores" />
<MenuItem fx:id="mSpeak" mnemonicParsing="false" onAction="#onSelect" text="Altavoces" />
<MenuItem fx:id="mMulti" mnemonicParsing="false" onAction="#onSelect" text="Multilectores" />
<MenuItem fx:id="mDVD" mnemonicParsing="false" onAction="#onSelect" text="Grabadoras" />
<MenuItem fx:id="mFan" mnemonicParsing="false" onAction="#onSelect" text="Ventiladores" />
<MenuItem fx:id="mPower" mnemonicParsing="false" onAction="#onSelect" text="Fuentes de alimentación" />
</items>
</MenuButton>
<HBox alignment="CENTER_LEFT">
<children>
<Label prefWidth="87.0" text="Precio Mín." />
<TextField fx:id="tFMin" HBox.hgrow="ALWAYS" />
</children>
</HBox>
<HBox alignment="CENTER_LEFT">
<children>
<Label prefWidth="87.0" text="Precio Máx." />
<TextField fx:id="tFMax" HBox.hgrow="ALWAYS" />
</children>
</HBox>
<HBox alignment="CENTER" spacing="10.0">
<children>
<Button fx:id="bAccept" mnemonicParsing="false" onAction="#onAccept" text="Aceptar" />
<Button fx:id="bCancel" mnemonicParsing="false" onAction="#onCancel" text="Cancelar" />
</children>
</HBox>
</children>
<HBox.margin>
<Insets top="4.0" />
</HBox.margin>
</VBox>
<VBox alignment="CENTER" spacing="10.0" HBox.hgrow="ALWAYS">
<HBox.margin>
<Insets />
</HBox.margin>
<children>
<TableView fx:id="tableViewItem" VBox.vgrow="ALWAYS">
<columns>
<TableColumn editable="false" prefWidth="75.0" sortable="false" text="Productos">
<columns>
<TableColumn fx:id="nameItemColumn" editable="false" prefWidth="75.0" sortable="false" text="Nombre" />
<TableColumn fx:id="priceColumn" editable="false" prefWidth="75.0" sortable="false" text="Precio" />
<TableColumn fx:id="availableColumn" editable="false" prefWidth="75.0" sortable="false" text="Disponibilidad" />
</columns>
</TableColumn>
</columns>
<columnResizePolicy>
<TableView fx:constant="CONSTRAINED_RESIZE_POLICY" />
</columnResizePolicy>
</TableView>
<Button fx:id="bAdd" mnemonicParsing="false" onAction="#onAdd" text="Añadir" />
</children>
</VBox>
<VBox spacing="10.0" HBox.hgrow="ALWAYS">
<children>
<TableView fx:id="tableViewBudget" editable="true" VBox.vgrow="ALWAYS">
<columns>
<TableColumn prefWidth="75.0" sortable="false" text="Presupuesto">
<columns>
<TableColumn fx:id="nameBudgetColumn" editable="false" prefWidth="75.0" sortable="false" text="Nombre" />
<TableColumn fx:id="outTaxColumn" editable="false" prefWidth="75.0" sortable="false" text="Sin IVA" />
<TableColumn fx:id="inTaxColumn" editable="false" prefWidth="75.0" sortable="false" text="Con IVA" />
<TableColumn fx:id="quantityColumn" prefWidth="75.0" sortable="false" text="Cantidad" />
</columns>
</TableColumn>
</columns>
<columnResizePolicy>
<TableView fx:constant="CONSTRAINED_RESIZE_POLICY" />
</columnResizePolicy>
</TableView>
<HBox alignment="CENTER" spacing="10.0">
<children>
<Button fx:id="bRemove" mnemonicParsing="false" onAction="#onRemove" text="Eliminar" />
<Button fx:id="bClear" mnemonicParsing="false" onAction="#onClear" text="Limpiar" />
</children>
</HBox>
</children>
</VBox>
</children>
</HBox>
</children>
<padding>
<Insets bottom="5.0" left="5.0" right="5.0" top="5.0" />
</padding>
</VBox>
</content>
</TitledPane>
<TitledPane animated="false" text="Configuraciones" />
</panes>
</Accordion>
</children>
</VBox>
答案 0 :(得分：1)
您可以使用Map<Product, ObjectProperty<Integer>>来存储数量。
final int defaultValue = 0;
Map<StringItem, ObjectProperty<Integer>> map = new HashMap<>();
// fill map with existing keys
budgetData.forEach(i -> map.put(i, new SimpleObjectProperty(defaultValue)));
// update map on change of list
budgetData.addListener((ListChangeListener.Change<? extends StringItem> c) -> {
while (c.next()) {
c.getRemoved().forEach(map::remove);
c.getAddedSubList().forEach(i -> map.put(i, new SimpleObjectProperty(defaultValue)));
}
});
// use value in map as value for column
quantityColumn.setCellValueFactory(d -> map.get(d.getValue()));
quantityColumn.setCellFactory(TextFieldTableCell.forTableColumn(new IntegerStringConverter()));
请注意，这要求列表中的所有项目与equals成对不同。如果不满足此条件，则必须使用唯一键作为TableView的项目类型，并将数量和原始项目类型关联到地图中。
答案 1 :(得分：0)
您需要使用单元工厂来实现：
nameBudgetColumn.setCellFactory(tc -> new TextFieldTableCell<>());