How to get parent Window in FXML Controller?

Question

For example, I want open a DirectoryChooser when clicking on the button:

<VBox fx:controller="com.foo.MyController"
    xmlns:fx="http://javafx.com/fxml">
    <children>
        <Button text="Click Me!" onAction="#handleButtonAction"/>
    </children>
</VBox>

And the Controller class:

package com.foo;

public class MyController {
    public void handleButtonAction(ActionEvent event) {
        DirectoryChooser dc = new DirectoryChooser();
        File folder = dc.showDialog(null);//I want to put the WIndows here.
    }
}

I want to put the main Window to the ShowDialog so that it will be blocked but how can I access it?

score 53 · Accepted Answer · edited Feb 06 '22 at 17:37

53

You can ask any node for the Scene and then call Scene#getWindow().

((Node) event.getTarget()).getScene().getWindow()

From @osvein if this is a handler for a MenuItem it should be:

((MenuItem) event.getTarget()).getParentPopup().getOwnerWindow()

edited Feb 06 '22 at 17:37

Dexter Legaspi

3,192
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answered Nov 27 '12 at 18:07

Sergey Grinev

34,078
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4

Can this be done for a MenuItem? Your code gives this error for me: `Caused by: java.lang.ClassCastException: javafx.scene.control.MenuItem cannot be cast to javafx.scene.Node` – zygimantus Jun 08 '18 at 13:03
7

@zygimantus `((MenuItem)event.getTarget()).getParentPopup().getOwnerWindow()` – osvein Mar 13 '19 at 21:38

How to get parent Window in FXML Controller?

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