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// This file is part of Sydney <https://github.com/gemrest/sydney>.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 3.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
// Copyright (C) 2022-2022 Fuwn <[email protected]>
// SPDX-License-Identifier: GPL-3.0-only
//! <https://github.com/fdehau/tui-rs/blob/master/examples/list.rs>
use ratatui::widgets::ListState;
pub struct StatefulList<T> {
pub state: ListState,
pub items: Vec<T>,
pub selected: usize,
}
impl<T> StatefulList<T> {
pub fn with_items(items: Vec<T>) -> Self {
Self {
state: ListState::default(),
items,
selected: 0,
}
}
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.selected = i;
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.selected = i;
self.state.select(Some(i));
}
pub fn last(&mut self) {
self.state.select(Some(self.items.len() - 1));
self.selected = self.items.len() - 1;
}
pub fn first(&mut self) {
self.state.select(Some(0));
self.selected = 0;
}
pub fn unselect(&mut self) { self.state.select(None); }
}
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