Can we add Focus()/Blur() function in list? Or Do we have these function for list?

[chengxilo]

I am working on a tui project and I use list as a sidebar of my project. In my use case I need to change the focus between my sidebar and my main conent.
Like this:

But I realize that list doesn't have Focus()/Blur() function so I have to munually prevent list from handling tea.KeyMsg().
Like this...

So, since table do support Focus()/Blur() function, can we add this function to list? If we can, I'd like to do this job.

[Nishchal-ll]

In Bubble Tea / Bubbles, the Elm Architecture expects parent models to own focus and routing for sub-models. While input components like textinput have Focus()/Blur() primarily to control cursor blinking and state, larger container components like list.Model leave routing and active state up to the parent model.

Here is the idiomatic way to manage focus between a list sidebar and other components:

---

1. Control event routing in the parent Update

The parent model tracks which pane is active (e.g., using an enum/iota) and only forwards key events to the list when it is focused:

type focusPane int

const (
    focusSidebar focusPane = iota
    focusContent
)

type model struct {
    focused focusPane
    list    list.Model
    // other components...
}

func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
    var (
        cmd  tea.Cmd
        cmds []tea.Cmd
    )

    switch msg := msg.(type) {
    case tea.KeyMsg:
        switch msg.String() {
        case "tab":
            // Switch focus between sidebar and content
            if m.focused == focusSidebar {
                m.focused = focusContent
            } else {
                m.focused = focusSidebar
            }
            return m, nil

        case "ctrl+c", "q":
            return m, tea.Quit
        }
    }

    // Only forward keys to the list if the sidebar is focused
    if m.focused == focusSidebar {
        m.list, cmd = m.list.Update(msg)
        cmds = append(cmds, cmd)
    }

    // Forward other messages (WindowSizeMsg, custom msgs, etc.) if not a KeyMsg
    if _, isKey := msg.(tea.KeyMsg); !isKey {
        m.list, cmd = m.list.Update(msg)
        cmds = append(cmds, cmd)
    }

    return m, tea.Batch(cmds...)
}