45 lines
876 B
Rust
Executable File
45 lines
876 B
Rust
Executable File
#[derive(Debug)]
|
|
pub struct ContentList<T> {
|
|
pub list: Vec<T>,
|
|
pub index: usize,
|
|
}
|
|
|
|
impl<T> ContentList<T> {
|
|
pub fn new() -> Self {
|
|
ContentList {
|
|
list: Vec::new(),
|
|
index: 0,
|
|
}
|
|
}
|
|
|
|
// Go to next item in list
|
|
pub fn next(&mut self) {
|
|
let len = self.list.len();
|
|
if len != 0 && self.index < len - 1 {
|
|
self.index += 1;
|
|
}
|
|
}
|
|
|
|
/// Go to previous item in list
|
|
pub fn prev(&mut self) {
|
|
if self.index != 0 {
|
|
self.index -= 1;
|
|
}
|
|
}
|
|
|
|
pub fn reset_index(&mut self) {
|
|
self.index = 0;
|
|
}
|
|
|
|
/// Returns the self.list[self.index] item
|
|
pub fn get_item_at_current_index(&mut self) -> &T {
|
|
self.list.get(self.index).unwrap()
|
|
}
|
|
}
|
|
|
|
impl<T> Default for ContentList<T> {
|
|
fn default() -> Self {
|
|
Self::new()
|
|
}
|
|
}
|