如何在JavaFX表格视图中添加按钮

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如何在JavaFX表格视图中添加按钮

我在Google和Stackoverflow上搜索了这个问题，但我对给出的例子一点都不了解。有人能解释一下吗？

我想在表格视图的最后一列中添加一个按钮，当点击按钮时，它应该触发一个监听器并传递按钮所在行的对象。我对gist.github.com上的示例不太理解。

这是我的完整代码：

public class SchermdeelWerkplaats extends BorderPane{

//ATD moeder klasse met alle collecties etc.

private ATD $;

TableView tabel = new TableView();

Button nieuwTaak = new Button("Nieuwe taak inboeken");

final ObservableList data = FXCollections.observableArrayList();

public SchermdeelWerkplaats(ATD a) {

$ = a;

data.addAll($.agenda);

tabel.setEditable(false);

tabel.setPlaceholder(new Label("Geen taken"));

TableColumn c1 = new TableColumn("datum");

c1.setMinWidth(200);

TableColumn c2 = new TableColumn("type");

c2.setMinWidth(100);

TableColumn c3 = new TableColumn("uren");

c3.setMinWidth(100);

TableColumn c4 = new TableColumn("klaar");

c4.setMinWidth(200);

TableColumn c5 = new TableColumn("Werknemer");

c5.setMinWidth(100);

TableColumn c6= new TableColumn("Auto");

c6.setMinWidth(400);

TableColumn c7= new TableColumn("Actie");

c7.setMinWidth(400);

TableColumn col_action = new TableColumn<>("Action");

col_action.setCellValueFactory(

new Callback,

ObservableValue>() {

@Override

public ObservableValue call(TableColumn.CellDataFeatures p) {

return new SimpleBooleanProperty(p.getValue() != null);

}

});

col_action.setCellFactory(

new Callback, TableCell>() {

@Override

public TableCell call(TableColumn p) {

return new ButtonCell();

}

}

);

c1.setCellValueFactory(

new PropertyValueFactory("date")

);

c2.setCellValueFactory(

new PropertyValueFactory("type")

);

c3.setCellValueFactory(

new PropertyValueFactory("hours")

);

c4.setCellValueFactory(

new PropertyValueFactory("done")

);

c5.setCellValueFactory(

new PropertyValueFactory("employee")

);

c6.setCellValueFactory(

new PropertyValueFactory("car")

);

tabel.getColumns().addAll(c1, c2, c3, c4, c5, c6, c7);

tabel.setItems(data);

setCenter(tabel);

setBottom(nieuwTaak);

}

//letterlijk van internet geplukt en datatype aangepast

private class ButtonCell extends TableCell {

private Button cellButton;

ButtonCell(){

cellButton = new Button("jjhjhjh");

cellButton.setOnAction(new EventHandler(){

@Override

public void handle(ActionEvent t) {

// do something when button clicked

Task record = getItem();

// do something with record....

}

});

}

//Display button if the row is not empty

@Override

protected void updateItem(Task record, boolean empty) {

super.updateItem(record, empty);

if(!empty){

cellButton.setText("Something with "+record);

setGraphic(cellButton);

} else {

setGraphic(null);

}

}

}

}

现在我需要创建一个ButtonCell extends TableCell，这部分是可以理解的。但是如何将其分配给列呢？

我理解这个：

c1.setCellValueFactory(
        new PropertyValueFactory("date")
    );

但是这个我不理解：

           TableColumn col_action = new TableColumn<>("Action");
            col_action.setCellValueFactory(
                    new Callback, 
                    ObservableValue>() {
                @Override
                public ObservableValue call(TableColumn.CellDataFeatures p) {
                    return new SimpleBooleanProperty(p.getValue() != null);
                }
            });
            col_action.setCellFactory(
                new Callback, TableCell>() {
                    @Override
                    public TableCell call(TableColumn p) {
                        return new ButtonCell();
                    }
                }
            );

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