Remove compiler warnings in todo example

examples/todomvc/Cargo.toml

@@ -13,6 +13,7 @@ askama = "0.7.2"
 js-sys = "0.3.5"
 wasm-bindgen = "0.2.28"
 askama = "0.7.2"
+console_error_panic_hook = "0.1"
 
 [dependencies.web-sys]
 version = "0.3.4"

examples/todomvc/src/controller.rs

@@ -140,14 +140,11 @@ impl Controller {
     /// Set all items to complete or active.
     fn toggle_all(&mut self, completed: bool) {
         let mut vals = Vec::new();
-        self.store
-            .find(
-                ItemQuery::EmptyItemQuery,
-            ).map(|data| {
-                for item in data.iter() {
-                    vals.push(item.id.clone());
-                }
-            });
+        self.store.find(ItemQuery::EmptyItemQuery).map(|data| {
+            for item in data.iter() {
+                vals.push(item.id.clone());
+            }
+        });
         for id in vals.iter() {
             self.toggle_completed(id.to_string(), completed);
         }

examples/todomvc/src/element.rs

@@ -1,12 +1,26 @@
 extern crate wasm_bindgen;
 use wasm_bindgen::prelude::*;
 use wasm_bindgen::JsCast;
+use web_sys::EventTarget;
 
 /// Wrapper for `web_sys::Element` to simplify calling different interfaces
 pub struct Element {
     el: Option<web_sys::Element>,
 }
 
+impl From<web_sys::Element> for Element {
+    fn from(el: web_sys::Element) -> Element {
+        Element { el: Some(el) }
+    }
+}
+
+impl From<web_sys::EventTarget> for Element {
+    fn from(el: web_sys::EventTarget) -> Element {
+        let el = wasm_bindgen::JsCast::dyn_into::<web_sys::Element>(el);
+        Element { el: el.ok() }
+    }
+}
+
 impl From<Element> for Option<web_sys::Node> {
     fn from(obj: Element) -> Option<web_sys::Node> {
         if let Some(el) = obj.el {
@@ -17,8 +31,8 @@ impl From<Element> for Option<web_sys::Node> {
     }
 }
 
-impl From<Element> for Option<web_sys::EventTarget> {
-    fn from(obj: Element) -> Option<web_sys::EventTarget> {
+impl From<Element> for Option<EventTarget> {
+    fn from(obj: Element) -> Option<EventTarget> {
         if let Some(el) = obj.el {
             Some(el.into())
         } else {
@@ -28,6 +42,15 @@ impl From<Element> for Option<web_sys::EventTarget> {
 }
 
 impl Element {
+    // Create an element from a tag name
+    pub fn create_element(tag: &str) -> Option<Element> {
+        if let Some(el) = web_sys::window()?.document()?.create_element(tag).ok() {
+            Some(el.into())
+        } else {
+            None
+        }
+    }
+
     pub fn qs(selector: &str) -> Option<Element> {
         let body: web_sys::Element = web_sys::window()?.document()?.body()?.into();
         let el = body.query_selector(selector).ok()?;
@@ -41,8 +64,10 @@ impl Element {
     {
         let cb = Closure::wrap(Box::new(handler) as Box<FnMut(_)>);
         if let Some(el) = self.el.take() {
-            let el_et: web_sys::EventTarget = el.into();
-            el_et.add_event_listener_with_callback(event_name, cb.as_ref().unchecked_ref());
+            let el_et: EventTarget = el.into();
+            el_et
+                .add_event_listener_with_callback(event_name, cb.as_ref().unchecked_ref())
+                .unwrap();
             cb.forget();
             if let Ok(el) = el_et.dyn_into::<web_sys::Element>() {
                 self.el = Some(el);
@@ -64,22 +89,18 @@ impl Element {
             Some(e) => e,
             None => return,
         };
-        if let Some(dyn_el) = &el.dyn_ref::<web_sys::EventTarget>()
-        {
+        if let Some(dyn_el) = &el.dyn_ref::<EventTarget>() {
             if let Some(window) = web_sys::window() {
                 if let Some(document) = window.document() {
                     // TODO document selector to the target element
                     let tg_el = document;
 
                     let cb = Closure::wrap(Box::new(move |event: web_sys::Event| {
                         if let Some(target_element) = event.target() {
-                            let dyn_target_el: Option<
-                                &web_sys::Node,
-                            > = wasm_bindgen::JsCast::dyn_ref(&target_element);
+                            let dyn_target_el: Option<&web_sys::Node> =
+                                wasm_bindgen::JsCast::dyn_ref(&target_element);
                             if let Some(target_element) = dyn_target_el {
-                                if let Ok(potential_elements) =
-                                    tg_el.query_selector_all(selector)
-                                {
+                                if let Ok(potential_elements) = tg_el.query_selector_all(selector) {
                                     let mut has_match = false;
                                     for i in 0..potential_elements.length() {
                                         if let Some(el) = potential_elements.get(i) {
@@ -98,11 +119,13 @@ impl Element {
                         }
                     }) as Box<FnMut(_)>);
 
-                    dyn_el.add_event_listener_with_callback_and_bool(
-                        event,
-                        cb.as_ref().unchecked_ref(),
-                        use_capture,
-                    );
+                    dyn_el
+                        .add_event_listener_with_callback_and_bool(
+                            event,
+                            cb.as_ref().unchecked_ref(),
+                            use_capture,
+                        )
+                        .unwrap();
                     cb.forget(); // TODO cycle collect
                 }
             }
@@ -138,6 +161,43 @@ impl Element {
         }
     }
 
+    /// Gets the text content of the `self.el` element
+    pub fn text_content(&mut self) -> Option<String> {
+        let mut text = None;
+        if let Some(el) = self.el.as_ref() {
+            if let Some(node) = &el.dyn_ref::<web_sys::Node>() {
+                text = node.text_content();
+            }
+        }
+        text
+    }
+
+    /// Gets the parent of the `self.el` element
+    pub fn parent_element(&mut self) -> Option<Element> {
+        let mut parent = None;
+        if let Some(el) = self.el.as_ref() {
+            if let Some(node) = &el.dyn_ref::<web_sys::Node>() {
+                if let Some(parent_node) = node.parent_element() {
+                    parent = Some(parent_node.into());
+                }
+            }
+        }
+        parent
+    }
+
+    /// Gets the parent of the `self.el` element
+    pub fn append_child(&mut self, child: &mut Element) {
+        if let Some(el) = self.el.as_ref() {
+            if let Some(node) = &el.dyn_ref::<web_sys::Node>() {
+                if let Some(ref child_el) = child.el {
+                    if let Some(child_node) = child_el.dyn_ref::<web_sys::Node>() {
+                        node.append_child(child_node).unwrap();
+                    }
+                }
+            }
+        }
+    }
+
     /// Removes a class list item from the element
     ///
     /// ```
@@ -146,7 +206,14 @@ impl Element {
     /// ```
     pub fn class_list_remove(&mut self, value: &str) {
         if let Some(el) = self.el.take() {
-            el.class_list().remove_1(&value);
+            el.class_list().remove_1(&value).unwrap();
+            self.el = Some(el);
+        }
+    }
+
+    pub fn class_list_add(&mut self, value: &str) {
+        if let Some(el) = self.el.take() {
+            el.class_list().add_1(&value).unwrap();
             self.el = Some(el);
         }
     }
@@ -158,7 +225,7 @@ impl Element {
             if let Some(el) = self.el.take() {
                 if let Some(el_node) = el.dyn_ref::<web_sys::Node>() {
                     let child_node: web_sys::Node = child_el.into();
-                    el_node.remove_child(&child_node);
+                    el_node.remove_child(&child_node).unwrap();
                 }
                 self.el = Some(el);
             }
@@ -186,7 +253,57 @@ impl Element {
         }
     }
 
-    /// Sets the visibility for the element in `self.el` (The element must be an input)
+    pub fn blur(&mut self) {
+        if let Some(el) = self.el.take() {
+            {
+                let dyn_el: Option<&web_sys::HtmlElement> = wasm_bindgen::JsCast::dyn_ref(&el);
+                if let Some(el) = dyn_el {
+                    // There isn't much we can do with the result here so ignore
+                    el.blur().unwrap();
+                }
+            }
+            self.el = Some(el);
+        }
+    }
+
+    pub fn focus(&mut self) {
+        if let Some(el) = self.el.take() {
+            {
+                let dyn_el: Option<&web_sys::HtmlElement> = wasm_bindgen::JsCast::dyn_ref(&el);
+                if let Some(el) = dyn_el {
+                    // There isn't much we can do with the result here so ignore
+                    el.focus().unwrap();
+                }
+            }
+            self.el = Some(el);
+        }
+    }
+
+    pub fn dataset_set(&mut self, key: &str, value: &str) {
+        if let Some(el) = self.el.take() {
+            {
+                if let Some(el) = wasm_bindgen::JsCast::dyn_ref::<web_sys::HtmlElement>(&el) {
+                    el.dataset().set(key, value).unwrap();
+                }
+            }
+            self.el = Some(el);
+        }
+    }
+
+    pub fn dataset_get(&mut self, key: &str) -> String {
+        let mut text = String::new();
+        if let Some(el) = self.el.take() {
+            {
+                if let Some(el) = wasm_bindgen::JsCast::dyn_ref::<web_sys::HtmlElement>(&el) {
+                    text = el.dataset().get(key);
+                }
+            }
+            self.el = Some(el);
+        }
+        text
+    }
+
+    /// Sets the value for the element in `self.el` (The element must be an input)
     pub fn set_value(&mut self, value: &str) {
         if let Some(el) = self.el.take() {
             if let Some(el) = wasm_bindgen::JsCast::dyn_ref::<web_sys::HtmlInputElement>(&el) {
@@ -196,6 +313,18 @@ impl Element {
         }
     }
 
+    /// Gets the value for the element in `self.el` (The element must be an input)
+    pub fn value(&mut self) -> String {
+        let mut v = String::new();
+        if let Some(el) = self.el.take() {
+            if let Some(el) = wasm_bindgen::JsCast::dyn_ref::<web_sys::HtmlInputElement>(&el) {
+                v = el.value();
+            }
+            self.el = Some(el);
+        }
+        v
+    }
+
     /// Sets the checked state for the element in `self.el` (The element must be an input)
     pub fn set_checked(&mut self, checked: bool) {
         if let Some(el) = self.el.take() {
@@ -205,4 +334,16 @@ impl Element {
             self.el = Some(el);
         }
     }
+
+    /// Gets the checked state for the element in `self.el` (The element must be an input)
+    pub fn checked(&mut self) -> bool {
+        let mut checked = false;
+        if let Some(el) = self.el.take() {
+            if let Some(el) = wasm_bindgen::JsCast::dyn_ref::<web_sys::HtmlInputElement>(&el) {
+                checked = el.checked();
+            }
+            self.el = Some(el);
+        }
+        checked
+    }
 }

examples/todomvc/src/lib.rs

@@ -1,7 +1,6 @@
 //! # TODO MVC
 //!
 //! A [TODO MVC](https://todomvc.com/) implementation written using [web-sys](https://rustwasm.github.io/wasm-bindgen/web-sys/overview.html)
-#![warn(missing_docs)]
 
 extern crate wasm_bindgen;
 use wasm_bindgen::prelude::*;
@@ -11,6 +10,7 @@ extern crate web_sys;
 use std::rc::Rc;
 
 extern crate askama;
+extern crate console_error_panic_hook;
 
 /// Controller of the program
 pub mod controller;
@@ -65,5 +65,6 @@ fn app(name: &str) {
 /// Entry point into the program from JavaScript
 #[wasm_bindgen]
 pub fn run() {
+    console_error_panic_hook::set_once();
     app("todos-wasmbindgen");
 }

examples/todomvc/src/store.rs

@@ -70,7 +70,8 @@ impl Store {
         if let Ok(storage_string) = JSON::stringify(&JsValue::from(array)) {
             let storage_string: String = storage_string.to_string().into();
             self.local_storage
-                .set_item(&self.name, storage_string.as_str());
+                .set_item(&self.name, storage_string.as_str())
+                .unwrap();
         }
     }
 
@@ -82,7 +83,12 @@ impl Store {
     ///	 // data will contain items whose completed properties are true
     /// ```
     pub fn find(&mut self, query: ItemQuery) -> Option<ItemListSlice> {
-        Some(self.data.iter().filter(|todo| query.matches(*todo)).collect())
+        Some(
+            self.data
+                .iter()
+                .filter(|todo| query.matches(*todo))
+                .collect(),
+        )
     }
 
     /// Update an item in the Store.
@@ -161,12 +167,10 @@ pub struct ItemList {
     list: Vec<Item>,
 }
 impl ItemList {
-    fn into_iter(self) -> std::vec::IntoIter<Item> {
-        self.list.into_iter()
-    }
     fn retain<F>(&mut self, f: F)
     where
-      F: FnMut(&Item) -> bool {
+        F: FnMut(&Item) -> bool,
+    {
         self.list.retain(f);
     }
     fn iter_mut(&mut self) -> std::slice::IterMut<Item> {

examples/todomvc/src/template.rs

@@ -1,5 +1,5 @@
-use store::{ItemList, ItemListTrait, Item};
 use askama::Template as AskamaTemplate;
+use store::{ItemList, ItemListTrait};
 
 #[derive(AskamaTemplate)]
 #[template(path = "row.html")]
@@ -9,7 +9,6 @@ struct RowTemplate<'a> {
     completed: bool,
 }
 
-
 #[derive(AskamaTemplate)]
 #[template(path = "itemsLeft.html")]
 struct ItemsLeftTemplate {
@@ -46,9 +45,7 @@ impl Template {
     ///
     /// Returns the contents for an "items left" indicator
     pub fn item_counter(active_todos: usize) -> String {
-        let items_left = ItemsLeftTemplate {
-            active_todos
-        };
+        let items_left = ItemsLeftTemplate { active_todos };
         if let Ok(res) = items_left.render() {
             res
         } else {