Struct FormState 

pub struct FormState {
    pub fields: Vec<FormField>,
    pub focused: usize,
    pub cursors: Vec<usize>,
    pub touched: HashSet<String>,
}

Form state: fields + focus + per-field cursor + touched set.

Fields

fields: Vec<FormField>

focused: usize

cursors: Vec<usize>

Char-index cursor per field (relevant for Text / Integer / Float).

touched: HashSet<String>

Field ids that the user has visited and then left. Callers render validation errors only for ids in this set (error-on-leave pattern).

Implementations

impl FormState

pub fn new(fields: Vec<FormField>) -> Self

Build a new state. The cursor for each Text field starts at the end of its value; other kinds start at 0.

pub fn focus_next(&mut self) -> bool

Move focus to the next visible field. Records the previously focused field as touched. Returns true if focus actually changed.

pub fn focus_prev(&mut self) -> bool

Move focus to the previous visible field.

pub fn handle_key(&mut self, key: KeyEvent) -> FormEvent

Route a key event. Returns a FormEvent describing the outcome.

pub fn touch_all(&mut self)

Mark the focused field as touched without moving focus. Useful when a caller commits a form (e.g. on Enter-save) and wants every row’s error visible.

pub fn untouch_all(&mut self)

Reset touched state — typically called when re-opening a form fresh.

Trait Implementations

impl Clone for FormState

fn clone(&self) -> FormState

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for FormState

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.