Struct Group 

pub struct Group { /* private fields */ }

RAII wrapper for an LVGL input focus group (lv_group_t).

Groups route keyboard/encoder/button events to a focused member widget. Essential for non-touch targets. Create a group, add widgets via Group::add, then wire it to an input device via the backend-specific indev registration (outside this crate).

Dropping the Group deletes the underlying lv_group_t.

Implementations

impl Group

pub fn new() -> Self

Create a fresh focus group.

pub fn as_raw(&self) -> *mut lv_group_t

Raw lv_group_t * for FFI interop.

pub fn set_as_default(&self) -> &Self

Fluent: mark this group as the default.

pub fn add(&self, obj: impl Widget) -> &Self

Fluent: add a widget to the group’s focusable list.

pub fn remove_all(&self) -> &Self

Fluent: remove all widgets from this group.

pub fn focus_next(&self) -> &Self

Fluent: move focus to the next member.

pub fn focus_prev(&self) -> &Self

Fluent: move focus to the previous member.

pub fn focus_freeze(&self, freeze: bool) -> &Self

Fluent: freeze/unfreeze focus movement.

pub fn focused(&self) -> Option<Obj>

Returns the currently focused widget as an Obj handle, or None if the group is empty.

pub fn edit_mode(&self, enable: bool) -> &Self

Fluent: enable/disable encoder edit mode.

pub fn is_editing(&self) -> bool

Returns the current edit-mode flag.

pub fn obj_count(&self) -> u32

Returns the number of widgets in the group.

pub fn focus_obj(obj: impl Widget)

Static helper: focus a widget regardless of its group.

pub fn remove_obj(obj: impl Widget)

Static helper: remove a widget from whatever group it’s in.

Trait Implementations

impl Default for Group

fn default() -> Self

Returns the “default value” for a type.

impl Drop for Group

fn drop(&mut self)

Executes the destructor for this type.

impl Send for Group

impl Sync for Group