r2mo_webel/
session.rs

1use std::collections::HashSet;
2use wasm_bindgen::prelude::*;
3
4#[wasm_bindgen]
5extern "C" {
6    #[wasm_bindgen(js_namespace = sessionStorage)]
7    fn setItem(key: &str, value: &str);
8
9    #[wasm_bindgen(js_namespace = sessionStorage)]
10    fn getItem(key: &str) -> Option<String>;
11
12    #[wasm_bindgen(js_namespace = sessionStorage)]
13    fn removeItem(key: &str);
14}
15
16/// SessionManager provides utilities for managing session storage in WebAssembly
17pub struct SessionManager;
18
19impl SessionManager {
20    const EXPANDED_MENUS_KEY: &'static str = "r2mo_expanded_menus";
21
22    /// Save the set of expanded menu IDs to session storage
23    pub fn save_expanded_menus(menus: &HashSet<String>) {
24        if menus.is_empty() {
25            removeItem(Self::EXPANDED_MENUS_KEY);
26            return;
27        }
28
29        match serde_json::to_string(menus) {
30            Ok(json) => {
31                setItem(Self::EXPANDED_MENUS_KEY, &json);
32            }
33            Err(_) => {
34                // 如果序列化失败，就清除存储
35                removeItem(Self::EXPANDED_MENUS_KEY);
36            }
37        }
38    }
39
40    /// Load the set of expanded menu IDs from session storage
41    pub fn load_expanded_menus() -> HashSet<String> {
42        match getItem(Self::EXPANDED_MENUS_KEY) {
43            Some(json) => serde_json::from_str(&json).unwrap_or_default(),
44            None => HashSet::new(),
45        }
46    }
47
48    /// Clear the stored expanded menus
49    pub fn clear_expanded_menus() {
50        removeItem(Self::EXPANDED_MENUS_KEY);
51    }
52}
r2mo_webel/session.rs

r2mo_webel/
session.rs
