remove some warnings, add configuration pane

src/lib.rs

@@ -1,5 +1,3 @@
-mod utils;
-
 use js_sys::Date;
 use rand::prelude::*;
 use wasm_bindgen::prelude::*;
@@ -16,29 +14,37 @@ extern "C" {
     fn alert(s: &str);
 }
 
+fn le_document() -> web_sys::Document {
+    let window = web_sys::window().expect("pas de window");
+    window.document().expect("pas_de_document")
+}
+
 #[wasm_bindgen]
 pub fn intervalle_orateurice() {
     let document = le_document();
     let now: f64 = Date::new_0().get_time();
-    let prochain = document.get_element_by_id("orateurice").expect("blu");
-    let compte = document.get_element_by_id("compte").expect("blaou");
-    match js_sys::Reflect::get(&prochain, &JsValue::from("debut")) {
-        Err(_) => return,
-        Ok(date_debut) => {
-            let date_debut = date_debut.as_f64().expect("tut tut");
-            let diff = ((now - date_debut) / 1000.0) as u64;
-            let sec = diff % 60;
-            let min = diff / 60;
-            compte.set_inner_html(&format!("{}:{:02}", min, sec));
-        }
+    let prochain = document
+        .get_element_by_id("orateurice")
+        .expect("pas de prochain");
+    let compte = document.get_element_by_id("compte");
+    match compte {
+        None => return,
+        Some(compte) => match js_sys::Reflect::get(&prochain, &JsValue::from("debut")) {
+            Err(_) => return,
+            Ok(date_debut) => {
+                if date_debut == JsValue::UNDEFINED {
+                    return;
+                };
+                let date_debut = date_debut.as_f64().expect("tut tut");
+                let diff = ((now - date_debut) / 1000.0) as u64;
+                let sec = diff % 60;
+                let min = diff / 60;
+                compte.set_inner_html(&format!("{}:{:02}", min, sec));
+            }
+        },
     }
 }
 
-fn le_document() -> web_sys::Document {
-    let window = web_sys::window().expect("no global `window` exists");
-    window.document().expect("should have a document on window")
-}
-
 #[wasm_bindgen]
 pub fn next() {
     let document = le_document();
@@ -66,12 +72,13 @@ pub fn next() {
             let nom_prochain = li.text_content().expect("");
             let temps_debut = Date::new_0().get_time();
             prochain.set_text_content(Some(nom_prochain.as_str()));
-            js_sys::Reflect::set(
+            let _ = js_sys::Reflect::set(
                 &prochain,
                 &JsValue::from("debut"),
                 &JsValue::from(temps_debut),
-            );
-            li.parent_element().expect("").remove_child(&li);
+            )
+            .unwrap();
+            li.parent_element().expect("").remove_child(&li).unwrap();
             prochain.set_class_name("");
         }
         None => {
@@ -113,12 +120,19 @@ pub fn ajoute(id: &str) {
     let n = lis.length();
     let mut rng = thread_rng();
     let k = rng.gen_range(0, n + 1);
+    let old_new_lis = document.get_elements_by_class_name("dernier_arrive");
+    for i in 0..old_new_lis.length() {
+        if let Some(li) = old_new_lis.item(i) {
+            li.class_list().remove_1("dernier_arrive").unwrap();
+        }
+    }
     let new_li = document.create_element("li").unwrap();
     new_li.set_inner_html(&content);
+    new_li.set_class_name("dernier_arrive");
     if k == n {
-        ol.append_child(&new_li);
+        ol.append_child(&new_li).unwrap();
     } else {
         let li = lis.item(k).unwrap();
-        li.after_with_node_1(&new_li);
+        li.after_with_node_1(&new_li).unwrap();
     }
 }