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use tui::widgets::ListState;
pub struct StatefulList<T> {
pub state: ListState,
pub items: Vec<T>,
}
impl<T> StatefulList<T> {
pub fn new() -> StatefulList<T> {
StatefulList {
state: ListState::default(),
items: Vec::new(),
}
}
pub fn with_items(items: Vec<T>) -> StatefulList<T> {
StatefulList {
state: ListState::default(),
items,
}
}
pub fn next(&mut self) {
let i = match self.state.selected() {
Some(i) => {
if i >= self.items.len() - 1 {
0
} else {
i + 1
}
}
None => 0,
};
self.state.select(Some(i));
}
pub fn previous(&mut self) {
let i = match self.state.selected() {
Some(i) => {
if i == 0 {
self.items.len() - 1
} else {
i - 1
}
}
None => 0,
};
self.state.select(Some(i));
}
pub fn unselect(&mut self) {
self.state.select(None);
}
}
impl<T> From<Vec<T>> for StatefulList<T> {
fn from(v: Vec<T>) -> Self {
StatefulList::with_items(v)
}
}
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