向TableView添加不同的按钮

Question

我已经发现如何在行的TableView中插入一个按钮，但我不确定如何为该按钮添加不同的值：

column
    .setCellFactory(new Callback<TableColumn<GuiObject, Boolean>, TableCell<GuiObject, Boolean>>() {
                    @Override
                    public TableCell<GuiObject, Boolean> call(
                            TableColumn<GuiObject, Boolean> p) {

                        return new ButtonCell();
                    }

                });

其中ButtonCell是TableCell<GuiObject, Boolean>的自实现按钮，但我希​​望能够根据我插入的行动态插入不同的按钮。

Answer 1

如果您从java访问TableView，请执行以下操作：

@FXML
TableView myTable;

@Override
public void initialize(URL url, ResourceBundle rb) {
    TableColumn<Item, String> firstColumn = new TableColumn<>("First Column");
    firstColumn.setCellValueFactory(new Callback<TableColumn.CellDataFeatures<Item, String>, ObservableValue<String>>() {
        @Override
        public ObservableValue<String> call(TableColumn.CellDataFeatures<Item, String> p) {
            return new ReadOnlyObjectWrapper(p.getValue().column1);
        }
    });

    TableColumn<Item, String> secondColumn = new TableColumn<>("Second Column");
    secondColumn.setCellValueFactory(new Callback<TableColumn.CellDataFeatures<Item, String>, ObservableValue<String>>() {
        @Override
        public ObservableValue<String> call(TableColumn.CellDataFeatures<Item, String> p) {
            return new ReadOnlyObjectWrapper(p.getValue().column2);
        }
    });

    TableColumn<Item, Button> buttonCol = new TableColumn<>("ButtonColumn");
    buttonCol.setSortable(false);
    buttonCol.setCellValueFactory(new Callback<TableColumn.CellDataFeatures<Item, Button>, ObservableValue<Button>>() {
        @Override
        public ObservableValue<Button> call(TableColumn.CellDataFeatures<Item, Button> features) {
            return new ReadOnlyObjectWrapper(features.getValue().button);
        }
    });
    myTable.getColumns().add(buttonCol);
    myTable.getColumns().add(firstColumn);
    myTable.getColumns().add(secondColumn);
    myTable.getItems().add(new Item("Test 1", "Test 1", new Button("Test 1"), new EventHandler<ActionEvent>() {
        @Override
        public void handle(ActionEvent t) {
            //ON ACTION CODE HERE
            System.out.println("TEST 1 CLICKED!");
        }
    }));
    myTable.getItems().add(new Item("Test 2", "Test 2", new Button("Test 2"), new EventHandler<ActionEvent>() {
        @Override
        public void handle(ActionEvent t) {
            //ON ACTION CODE HERE
            System.out.println("TEST 2 BUTTON CLICKED");
        }
    }));
}

和Item类：

public class Item {

    public String column1, column2;
    public Button button;

    public Item(String column1, String column2, Button b) {
        this.column1 = column1;
        this.column2 = column2;
        button = b;
    }
}

证明它有效：

Answer 2

由于Cobbles的代码，我修复了最后一期。我只是添加了一个方法addAddButton()，它为新行添加了一个按钮，并为Item类型的现有对象提供了功能：

private void addAddButton() {
        Button b = new Button(" + ");
        final Item item = new Item(="<new>",
                "<new>", b);
        b.setOnAction(new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent t) {
                Button deleteButton = new Button(" - ");
                deleteButton.setOnAction(new EventHandler<ActionEvent>() {
                    @Override
                    public void handle(ActionEvent t) {
                        selectedItems.remove(item); // a predefined list of selected items
                        myTable.getItems().clear();
                        for (Item current : selectedItems) {
                            myTable.getItems().add(current);
                        }
                        addAddButton();
                    }
                });
                item.setButton(deleteButton);
                selectedItems.add(item);

                myTable.getItems().clear();
                for (Item current : selectedItems) {
                    myTable.getItems().add(current);
                }
                addAddButton();
            }
        });

        tableAvailabilites.getItems().add(ga1);
    }

它还没有超级高效，但它正在发挥作用！