Make it easier to find the active 'tile'.

[mkrueger]

Is there a standard way doing that?

The active tile could be made more visible btw. atm it's really lacking in that department.

Or can you tell me which file is selected here:

For a library like that getting the selected document is vital.

ps. I can probably hack up a solution to that but this would be my 4th feature that's not going to be taken. I think that many users will run into that problem. Adding tiles should be easier as well.

Doing an application with documents & dockable tool windows should be as easy as possible.

[voidentente]

Note that it's as simple as

fn get_focused_pane<Pane>(tree: &Tree<Pane>, ui: &Ui) -> Option<TileId> {
    for (&id, tile) in tree.tiles.iter() {
        if tile.is_container() {
            continue;
        }

        let Some(rect) = tree.tiles.rect(id) else {
            continue;
        };

        if ui.rect_contains_pointer(rect) {
            return Some(id);
        }
    }

    None
}

to get the currently hovered pane. If you only want to activate a pane on click, you could use ctx.pointer_interact_pos() and check if that pos lies within the rect.