leetcode_tui_core/content/
topic.rs

1use crate::emit;
2use crate::utils::Paginate;
3use leetcode_tui_db::DbTopic;
4use leetcode_tui_shared::layout::Window;
5
6pub struct Topic {
7    paginate: Paginate<DbTopic>,
8    topics: Vec<DbTopic>,
9}
10
11impl<'a> Topic {
12    pub(crate) async fn new() -> Self {
13        let mut topics = vec![DbTopic::new("all")];
14        topics.extend(DbTopic::fetch_all().unwrap());
15        let s = Self {
16            paginate: Paginate::new(topics.clone()),
17            topics,
18        };
19        s.notify_change();
20        s
21    }
22
23    pub fn next_topic(&mut self) -> bool {
24        let has_topic_changed = self.paginate.next_elem(self.widget_height());
25        if has_topic_changed {
26            self.notify_change();
27        }
28        has_topic_changed
29    }
30
31    pub fn notify_change(&self) {
32        if let Some(hovered) = self.hovered() {
33            emit!(Topic(hovered.clone()));
34        }
35    }
36
37    pub fn prev_topic(&mut self) -> bool {
38        let has_topic_changed = self.paginate.prev_elem(self.widget_height());
39        if has_topic_changed {
40            self.notify_change()
41        };
42        has_topic_changed
43    }
44
45    pub fn set_topic(&mut self, topic: &DbTopic) -> bool {
46        if let Some(id) = self.topics.iter().position(|x| x.slug == topic.slug) {
47            self.paginate.set_element_by_index(id, self.widget_height());
48        }
49        return true;
50    }
51
52    pub fn window(&self) -> &[DbTopic] {
53        self.paginate.window(self.widget_height())
54    }
55
56    fn widget_height(&self) -> usize {
57        let window = Window::default();
58        let height = window.root.center_layout.topic.inner.height;
59        height as usize
60    }
61}
62
63impl Topic {
64    pub fn hovered(&self) -> Option<&DbTopic> {
65        self.paginate.hovered()
66    }
67}
leetcode_tui_core/content/topic.rs

leetcode_tui_core/content/
topic.rs
