Handle [type] attribute on the Button element (#1033)

* initial

* handle button

* handle button

* remove std_web

* merge

* revert

* Fix unresolved import error. (#5)

* fix yew-stdweb

Co-authored-by: Teymour Aldridge <42674621+teymour-aldridge@users.noreply.github.com>
Co-authored-by: Justin Starry <justin.starry@icloud.com>

yew/Cargo.toml

@@ -71,6 +71,7 @@ features = [
   "FocusEvent",
   "Headers",
   "HtmlElement",
+  "HtmlButtonElement",
   "HtmlInputElement",
   "HtmlSelectElement",
   "HtmlTextAreaElement",

yew/src/virtual_dom/vtag.rs

@@ -22,7 +22,7 @@ cfg_if! {
         use std::ops::Deref;
         use wasm_bindgen::JsCast;
         use web_sys::{
-            Element, HtmlInputElement as InputElement, HtmlTextAreaElement as TextAreaElement, Node,
+            Element, HtmlInputElement as InputElement, HtmlTextAreaElement as TextAreaElement, Node, HtmlButtonElement
         };
     }
 }
@@ -268,6 +268,21 @@ impl VTag {
             }
         }
 
+        // TODO: add std_web after https://github.com/koute/stdweb/issues/395 will be approved
+        // Check this out: https://github.com/yewstack/yew/pull/1033/commits/4b4e958bb1ccac0524eb20f63f06ae394c20553d
+        #[cfg(feature = "web_sys")]
+        {
+            if let Some(button) = element.dyn_ref::<HtmlButtonElement>() {
+                if let Some(change) = self.diff_kind(ancestor) {
+                    let kind = match change {
+                        Patch::Add(kind, _) | Patch::Replace(kind, _) => kind,
+                        Patch::Remove(_) => "",
+                    };
+                    button.set_type(kind);
+                }
+            }
+        }
+
         // `input` element has extra parameters to control
         // I override behavior of attributes to make it more clear
         // and useful in templates. For example I interpret `checked`