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src/lib.rs

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+mod utils;
+
+use wasm_bindgen::prelude::*;
+use web_sys;
+use wasm_bindgen::JsCast;
+use rand::prelude::*;
+
+// When the `wee_alloc` feature is enabled, use `wee_alloc` as the global
+// allocator.
+#[cfg(feature = "wee_alloc")]
+#[global_allocator]
+static ALLOC: wee_alloc::WeeAlloc = wee_alloc::WeeAlloc::INIT;
+
+#[wasm_bindgen]
+extern {
+    fn alert(s: &str);
+}
+
+#[wasm_bindgen]
+pub fn greet() {
+    alert("Hello, kikikoz!");
+}
+
+#[wasm_bindgen]
+pub fn next() {
+    let window = web_sys::window().expect("no global `window` exists");
+    let document = window.document().expect("should have a document on window");
+
+    let prochain = document.get_element_by_id("prochain").expect("blu");
+    let queue_prio = document.get_element_by_id("queue_prio").expect("bla");
+    let queue_non_prio = document.get_element_by_id("queue_non_prio").expect("bla");
+    let lis_prio = queue_prio.get_elements_by_tag_name("li");
+    let queue = if lis_prio.length() == 0 {
+	queue_non_prio
+    } else {
+	queue_prio
+    };
+    let lis = queue.get_elements_by_tag_name("li");
+    match lis.item(0) {
+	Some(li) => {
+	    let nom_prochain = li.text_content().expect("");
+	    prochain.set_text_content(Some(nom_prochain.as_str()));
+	    li.parent_element().expect("").remove_child(&li);
+	    prochain.set_class_name("");
+	},
+	None => {
+	    prochain.set_text_content(Some("Personne"));
+	    prochain.set_class_name("personne");
+	}
+    }
+}
+
+#[wasm_bindgen]
+pub fn ajoute(id: &str) {
+    let window = web_sys::window().expect("no global `window` exists");
+    let document = window.document().expect("should have a document on window");
+
+    let section = document.get_element_by_id(id).expect("bla");
+    let inputs = section.get_elements_by_tag_name("input");
+    let input = inputs.item(0).unwrap().dyn_into::<web_sys::HtmlInputElement>().unwrap();
+    let content = input.value();
+
+    let ols = section.get_elements_by_tag_name("ol");
+    let ol = ols.item(0).unwrap().dyn_into::<web_sys::HtmlOListElement>().unwrap();
+    let lis = ol.get_elements_by_tag_name("li");
+    let n = lis.length();
+    let mut rng = thread_rng();
+    let k = rng.gen_range(0, n+1);
+    let new_li = document.create_element("li").unwrap();
+    new_li.set_inner_html(&content);
+    if k == n {
+	ol.append_child(&new_li);
+    } else {
+	let li = lis.item(k).unwrap();
+	li.after_with_node_1(&new_li);
+    }
+
+    
+}

src/utils.rs

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+pub fn set_panic_hook() {
+    // When the `console_error_panic_hook` feature is enabled, we can call the
+    // `set_panic_hook` function at least once during initialization, and then
+    // we will get better error messages if our code ever panics.
+    //
+    // For more details see
+    // https://github.com/rustwasm/console_error_panic_hook#readme
+    #[cfg(feature = "console_error_panic_hook")]
+    console_error_panic_hook::set_once();
+}