JavaFX:添加单击侦听器以标识在TableView中单击了哪个单元格 [英] JavaFX: Adding Click Listener to identify which cell was clicked in TableView
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问题描述
我试图添加一个Click Listener/MouseEvent，它可以识别TableView中的哪个单元格被单击.我用字符串填充TableView列.目前，我寻找的所有解决方案都可以获取TableView的整行内容，但是我希望能够仅选择一个单元格并对该数据进行某些处理.我还需要获取所单击的单元格的行和列，以便可以将其映射到我的本地数据arraylist.因此，总而言之: (1)可以识别单击哪个单元格的侦听器 (2)获取点击的单元格的行和列
I am trying to add a Click Listener/MouseEvent that can identify which cell in my TableView was clicked. I populate my TableView Columns with Strings. Currently all the solutions I have looked for get the whole row of the TableView, but I want to be able to select just one cell and do something with that data. I would also need to get the row and column of the clicked cell so that I can map it to my local data arraylist. So in summary: (1) Listener that can identify which cell was clicked (2) Get Row and Col of clicked cell
这是我当前使用TableView的类的控制器:
This is my Controller for the class with the TableView currently:
public class BookingsUIController {
@FXML
private ResourceBundle resources;
@FXML
private URL location;
@FXML
private MenuButton monthMenuButton;
@FXML
private Button updateTableButton;
@FXML
private MenuButton dateMenuButton;
@FXML
private Button submitBookingsButton;
@FXML
private TableView<Object> tableView;
private int currentMonth;
private int currentDate;
@FXML
void updateTableButtonClicked(ActionEvent event) {
updateTableButton.setDisable(true);
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.MONTH, currentMonth);
calendar.set(Calendar.DATE, currentDate);
boolean dateChanged = Runner.changeDate(calendar);
if(dateChanged) {
//UPDATECELLS
try {
Main.showLoadingAlertLayout();
//SHOW ALERT LOADING DIALOG FOR 2 SECs
Thread.sleep(2000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Main.dismissLoadingAlertLayout();
Runner.updateCellsWithAvailability();
populateTable();
}
else {
//SHOW FAIL DIALOG
}
updateTableButton.setDisable(false);
}
@FXML
void submitBookingsClicked(ActionEvent event) {
}
@FXML
void initialize() {
assert monthMenuButton != null : "fx:id=\"monthMenuButton\" was not injected: check your FXML file 'BookingsUIFXML.fxml'.";
assert updateTableButton != null : "fx:id=\"updateTableButton\" was not injected: check your FXML file 'BookingsUIFXML.fxml'.";
assert dateMenuButton != null : "fx:id=\"dateMenuButton\" was not injected: check your FXML file 'BookingsUIFXML.fxml'.";
assert submitBookingsButton != null : "fx:id=\"submitBookingsButton\" was not injected: check your FXML file 'BookingsUIFXML.fxml'.";
Calendar cal = Calendar.getInstance();
currentMonth = cal.get(Calendar.MONTH);
currentDate = cal.get(Calendar.DATE);
populateMenus();
initTable();
populateTable();
}
void populateMenus() {
String[] months = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
for(int k = 0; k < months.length; k++) {
MenuItem item = new MenuItem(months[k]);
item.setId(k+"");
item.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent event) {
monthMenuButton.setText(item.getText());
currentMonth = Integer.parseInt(item.getId());
}
});
monthMenuButton.getItems().add(item);
}
for(int i = 1; i <= 31; i++) {
MenuItem item = new MenuItem(i + "");
item.setId(i + "");
item.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent event) {
dateMenuButton.setText(item.getText());
currentDate = Integer.parseInt(item.getId());
}
});
dateMenuButton.getItems().add(item);
}
}
void initTable() {
tableView.skinProperty().addListener((obs, oldSkin, newSkin) -> {
final TableHeaderRow header = (TableHeaderRow) tableView.lookup("TableHeaderRow");
header.reorderingProperty().addListener((o, oldVal, newVal) -> header.setReordering(false));
});
tableView.setOnMouseReleased(new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent event) {
// // TODO Auto-generated method stub
//
// if(event.getButton().equals(MouseButton.PRIMARY)) {
//
// tableView.getSelectionModel().;
// TableCell<Object, String> cell = (TableCell<Object, String>)event.getSource();
// System.out.println("CLICKED: " + cell.getItem());
// }
}
});
TableColumn<Object, String> roomsCol = new TableColumn<Object, String>("");
// roomsCol.setCellValueFactory(new Callback<TableColumn.CellDataFeatures<Object,String>, ObservableValue<String>>() {
//
// @Override
// public ObservableValue<String> call(CellDataFeatures<Object, String> param) {
// // TODO Auto-generated method stub
// return new ReadOnlyObjectWrapper<String>((String)param.getValue());
// }
// });
roomsCol.setCellValueFactory(createCellValueCallback(0));
roomsCol.setSortable(false);
tableView.getColumns().add(roomsCol);
// for(String room : Runner.rooms) {
// tableView.getItems().add(room);
// }
//
for(int i = 0; i < (Runner.times).size(); i++) {
String time = Runner.times.get(i);
final int index = i;
TableColumn<Object, String> timesCol = new TableColumn<Object, String>(time);
timesCol.setCellValueFactory(createCellValueCallback(i + 1));
timesCol.setSortable(false);
tableView.getColumns().add(timesCol);
// tableView.getColumns().add(new TableColumn<ObservableList<Cell>, String>(time));
}
}
void emptyTable() {
// for(int i = 0; i < tableView.getItems().size(); i++) {
// tableView.getItems().set(i, "");
// }
tableView.getItems().clear();
}
void populateTable() {
emptyTable();
for(ArrayList<Cell> cells : Runner.cellsByRows) {
ObservableList<String> stringList = FXCollections.observableArrayList();
stringList.add(cells.get(0).getRoom());
for(int i = 0; i < cells.size(); i++) {
String show = "";
if(cells.get(i).isAvailable()) {
show = "OPEN";
}
else {
show = "X";
}
stringList.add(show);
}
tableView.getItems().add(stringList);
}
Runner.displayCells();
}
Callback<TableColumn.CellDataFeatures<Object,String>, ObservableValue<String>> createCellValueCallback(int i){
final int index = i;
return new Callback<TableColumn.CellDataFeatures<Object,String>, ObservableValue<String>>() {
@Override
public ObservableValue<String> call(CellDataFeatures<Object, String> param) {
// TODO Auto-generated method stub
return new ReadOnlyObjectWrapper<String>(((ObservableList<String>)param.getValue()).get(index));
}
};
}
}
感谢任何帮助.请让我知道是否可以提供更多信息！
Any Help is Appreciated. Please let me know if I can provide any more info!
预先感谢
推荐答案
在每列上设置一个单元格工厂，以使用适当的侦听器创建单元格:
Set a cell factory on each column that creates cells with an appropriate listener:
for(int i = 0; i < (Runner.times).size(); i++) {
String time = Runner.times.get(i);
final int index = i;
TableColumn<Object, String> timesCol = new TableColumn<Object, String>(time);
timesCol.setCellValueFactory(createCellValueCallback(i + 1));
timesCol.setCellFactory(tc -> {
TableCell<Object, String> cell = new TableCell<Object, String>() {
@Override
protected void updateItem(String item, boolean empty) {
super.updateItem(item, empty);
setText(item);
}
};
cell.setOnMouseClicked(event -> {
if (! cell.isEmpty()) {
System.out.println("Click on column "+index+", row "+cell.getIndex());
}
});
return cell ;
});
timesCol.setSortable(false);
tableView.getColumns().add(timesCol);
}
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