Java Fx table with checkbox row selection - checkbox

Question

I want to create a simple table with multiple selection using checkboxes on the first column.
I've created a custom "TableColumn" to handle this feature in every table I need. I've implemented all the features except one: when I select or deselect a single row the corresponding checkbox on the first colum must be selected or unselected. I need help to develop this last function.
public class ColumnSelectRow extends TableColumn{
private CheckBox headerCheckBox = new CheckBox();
public ColumnSelectRow(String title) {
super(title);
setSortable(false);
setPrefWidth(100);
setMaxWidth(100);
setMinWidth(100);
setResizable(false);
setGraphic(headerCheckBox);
setCellValueFactory( new Callback<TableColumn.CellDataFeatures<Object, Boolean>, ObservableValue<Boolean>>() {
#Override
public ObservableValue<Boolean> call(TableColumn.CellDataFeatures<Object, Boolean> p) {
return new SimpleBooleanProperty(p.getValue() != null);
}
});
setCellFactory(new Callback<javafx.scene.control.TableColumn<Object, Boolean>, TableCell<Object, Boolean>>() {
#Override
public TableCell<Object, Boolean> call(javafx.scene.control.TableColumn<Object, Boolean> p) {
return new SelectButtonCell();
}
});
headerCheckBox.setOnAction(t->{
if(disableEvents) return;
TableView table = ColumnSelectRow.this.getTableView();
if (table == null) return;
if(headerCheckBox.isSelected()) table.getSelectionModel().selectAll();
else table.getSelectionModel().clearSelection();
});
}
public CheckBox getHeaderCheckBox() {
return headerCheckBox;
}
private boolean disableEvents = false;
private class SelectButtonCell extends TableCell {
private final CheckBox checkBox = new CheckBox();
public SelectButtonCell(){
setAlignment(Pos.CENTER);
checkBox.setOnAction(t -> {
int row = getTableRow().getIndex();
TableView table = SelectButtonCell.this.getTableView();
if (table == null) return;
if(checkBox.isSelected()) table.getSelectionModel().select(row);
else table.getSelectionModel().clearSelection(row);
table.getFocusModel().focus(row);
boolean empty = table.getSelectionModel().isEmpty();
boolean full = table.getSelectionModel().getSelectedCells().size()==table.getItems().size();
disableEvents = true;
headerCheckBox.setIndeterminate(false);
if(empty) headerCheckBox.setSelected(false);
else if(full) headerCheckBox.setSelected(true);
else headerCheckBox.setIndeterminate(true);
disableEvents = false;
});
}
public CheckBox getCheckBox() {
return checkBox;
}
#Override
protected void updateItem(Object item, boolean empty) {
super.updateItem(item, empty);
if(!empty){
setGraphic(checkBox);
}
int row = getTableRow().getIndex();
TableView table = SelectButtonCell.this.getTableView();
checkBox.setSelected(table.getSelectionModel().isSelected(row));
}
public boolean isCheckBoxSelected(){
return checkBox.isSelected();
}
}
thanks!!
Edit: a custom table with the first column selectable
import javafx.application.Application;
import javafx.beans.property.SimpleIntegerProperty;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.control.SelectionMode;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.stage.Stage;
public class MyTable extends Application {
private ColumnSelectRow columSelect;
#Override
public void start(Stage primaryStage) throws Exception {
columSelect = new ColumnSelectRow();
TableView T = new TableView<>();
T.getSelectionModel().setSelectionMode(SelectionMode.MULTIPLE);
ObservableList<myObject> al = FXCollections.observableArrayList();
al.add(new myObject(1));
al.add(new myObject(2));
al.add(new myObject(3));
T.setItems(al);
T.getColumns().add(columSelect);
TableColumn<myObject, Number> number = new TableColumn("Number");
number.setCellValueFactory(cellData->cellData.getValue().propetry);
T.getColumns().add(number);
Scene scene = new Scene(T);
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
private class myObject{
public SimpleIntegerProperty propetry = new SimpleIntegerProperty();
public myObject(int i) {
propetry.set(i);
}
}
}