CODEWITHSUNDEEP
javajavafxtableview
Zephyr
Zephyr

Reputation: 10253

TableView / CellValueFactory - Change displayed property based on value of another property

I have a TableView populated with a custom object; the table displays the properties of that object.

My question is how can I bind a different property to the column based on the value of another property for that row?

For example, suppose I have this object:

public class MyObject() {
    private SimpleStringProperty name = new SimpleStringProperty("");
    private SimpleStringProperty type = new SimpleStringProperty("");
}

Now in the TableView, I have the two columns:

+---------+--------+
| NAME    | TYPE   |
+---------+--------+
| Robert  | Mgr    |
+---------+--------+

However, if type = "Something", I want the Type column to actually display the value of the name property instead:

+---------+--------+
| NAME    | TYPE   |
+---------+--------+
| Robert  | Robert |
+---------+--------+

I am unclear how to go about setting a different PropertyValueFactory based on the value of another property within the same object instance.

Upvotes: 0

Views: 842

Answers (2)

Zephyr
Zephyr

Reputation: 10253

I was able to use the following solution as well:

colType.setCellValueFactory(param -> {
            if (param.getValue() != null) {
                if (param.getValue().getType().equals("Something")) {
                    return new SimpleStringProperty(param.getValue().getName);
                } else {
                    return new SimpleStringProperty(param.getValue().getType());
                }
            } else {
                return new SimpleStringProperty("");
            }
        });

Upvotes: 0

purring pigeon
purring pigeon

Reputation: 4209

You should be able to do something like this:

Edit to show column definition - this needs to take the object as a whole, not a string.

@FXML 
private TableColumn<MyObject,MyObject> changingColumn;

...

//Where you initialize the table
changingColumn.setCellValueFactory(cellData -> new ReadOnlyObjectWrapper<>(cellData.getValue()));
changingColumn.setCellFactory(tc -> new TableCell<MyObject, MyObject>() {
        @Override
        public void updateItem(MyObject item, boolean empty) {
            super.updateItem(item, empty);
            if (item == null || empty) {
                setText("");
            } else if ("something".equals(item.getType())){
                setText(item.getName());
            }else {
                setText(item.getType());
            }
        }
    });

Upvotes: 1

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