JavaFX auto-scroll down scrollpane

Question

Is there any way of auto scroll down a ScrollPane control when it content\'s height increases ? For example, I have a TitledPane on the bottom of the screen (inside a Scroll

Answer 1

You have to tell scrollpane where is the current coordinates before pass a value to the vertical or horizontal bar.

This code works pretty fine for me:

// the owner's node of your scrollPane;
titledPane.layout(); 
// the maxValue for scrollPane bar ( 1.0 it's the default value )
scrollPane.setVvalue( 1.0d ); 

You have to code this where your scrollpane grows. For example, if you add nodes to the scrollpane inner node, them, add a listener to it's children list.

If the inner node of scrollpane change it's height, add a listener to the heightProperty.

For example, the inner node of your scrollPane it's an AnchorPane and you add nodes to this pane, so do like this:

anchorPane.getChildren().addListener( 
    ( ListChangeListener.Change c ) -> {
        titledPane.layout();
        scrollPane.setVvalue( 1.0d ); 
    }
);

If it's the height which grows...

heightProperty().addListener(
    (observable, oldValue, newValue) -> {
        titledPane.layout();
        scrollPane.setVvalue( 1.0d ); 
    }
);

That's it!