Per component focus border

[ebourg]

The focus border configured with Component.focusedBorderColor is applied to all components. It would be nice to be able to disable it for some components such as the JScrollPanes.

[DevCharly]

You can disable focus border for single scroll pane:

Component view = myScrollPane.getViewport().getView();
((JComponent)view).putClientProperty(
    FlatClientProperties.COMPONENT_FOCUS_OWNER,
    (Predicate<JComponent>) c -> false );

[ebourg]

Thank you for the tip, I guess making the scroll pane non focusable would work too, but I was looking for something more like a ScrollPane.focusedBorderColor property overriding the default Component.focusedBorderColor.

[DevCharly]

There is actually a simple solution.

Create a own border class that changes the color:

public class MyScrollPaneBorder extends FlatBorder {
    public MyScrollPaneBorder() {
        focusedBorderColor = Color.red;
    }
}

And install it:

MyScrollPaneBorder myScrollPaneBorder = new MyScrollPaneBorder();
UIManager.put( "ScrollPane.border", myScrollPaneBorder );
UIManager.put( "Table.scrollPaneBorder", myScrollPaneBorder );