CODEWITHSUNDEEP
javafx
NaveenBharadwaj
NaveenBharadwaj

Reputation: 1333

How to disable dragging of splitpane divider in JavaFX?

I have a splitpane which is divided into 4 different AnchorPanes. So there are 3 dividers and I need to set the dividers at a predefined size. I'm doing that using,

leftSplitPane.setDividerPositions(0.04f, 0.4f, 0.86f);

However in the UI, the dividers are still draggable. I need to disallow dragging of these dividers. I tried ResizableWithParent in SceneBuilder. But it doesn't work. I also tried to bind the anchorpane to splitpane like this, but it seems wrong.

leftAnchorPane.maxWidthProperty().bind(leftSplitPane.widthProperty().multiply(1));

Please help me on this.

Upvotes: 0

Views: 3509

Answers (1)

Uluk Biy
Uluk Biy

Reputation: 49215

One way to achieve this is to set the divider position to fixed value on its change listener:

final double pos[] =
{
    0.3f, 0.6f, 0.9f
};

sp.setDividerPositions( pos );

for ( int i = 0; i < sp.getDividers().size(); i++ )
{
    final int ind = i;
    SplitPane.Divider divider = sp.getDividers().get( i );
    divider.positionProperty().addListener(
            ( ObservableValue<? extends Number> observable, Number oldValue, Number newValue ) ->
            {
                divider.setPosition( pos[ind] );
            } );
}

Implicit full example:

@Override
public void start( Stage primaryStage )
{
    SplitPane sp = new SplitPane();
    final StackPane sp1 = new StackPane();
    sp1.getChildren().add( new Button( "Button One" ) );
    final StackPane sp2 = new StackPane();
    sp2.getChildren().add( new Button( "Button Two" ) );
    final StackPane sp3 = new StackPane();
    sp3.getChildren().add( new Button( "Button Three" ) );
    sp.getItems().addAll( sp1, sp2, sp3 );

    final double pos[] =
    {
        0.04f, 0.4f, 0.86f
    };

    sp.setDividerPositions( pos );

    for ( int i = 0; i < sp.getDividers().size(); i++ )
    {
        final int ind = i;
        SplitPane.Divider divider = sp.getDividers().get( i );
        divider.positionProperty().addListener(new ChangeListener<Number>()
        {
            @Override
            public void changed( ObservableValue<? extends Number> observable, Number oldValue, Number newValue )
            {
                divider.setPosition( pos[ind] );
            }
        });
    }

    Scene scene = new Scene( sp, 400, 400 );
    primaryStage.setScene( scene );
    primaryStage.show();
}

Upvotes: 3

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