use derive_more::Deref;
use serde::{Deserialize, Serialize};
use std::collections::VecDeque;
static DEFAULT_SIZE: u32 = 20;
#[derive(Debug, Clone, Serialize, Deserialize, Deref)]
pub struct Frame<T> {
size: u32,
#[deref]
frame: VecDeque<T>,
}
impl<T> Default for Frame<T> {
fn default() -> Self {
Self::new(DEFAULT_SIZE)
}
}
impl<T> Frame<T> {
pub fn new(size: u32) -> Self {
Self {
size,
frame: VecDeque::with_capacity(size as usize),
}
}
pub fn insert_pop(&mut self, item: T) -> Option<T> {
let result = {
if self.frame.len() > self.size as usize {
self.frame.pop_front()
} else {
None
}
};
self.frame.push_back(item);
result
}
pub fn size(&self) -> u32 {
self.size
}
}