converting some things to choo/component

app/ui/account.js

@@ -1,58 +1,101 @@
 const html = require('choo/html');
+const Component = require('choo/component');
 
-module.exports = function(state, emit) {
-  if (!state.capabilities.account) {
-    return null;
+class Account extends Component {
+  constructor(name, state, emit) {
+    super(name);
+    this.state = state;
+    this.emit = emit;
+    this.enabled = state.capabilities.account;
+    this.local = state.components[name] = {};
+    this.setState();
   }
-  const user = state.user;
-  if (!user.loggedIn) {
-    return html`<button
-      class="p-2 border rounded border-white text-white hover:bg-white hover:text-blue md:text-blue md:border-blue md:hover:text-white md:hover:bg-blue"
-      onclick=${login}>
-        ${state.translate('signInMenuOption')}
-      </button>`;
-  }
-  return html`<div class="relative h-8">
-    <input
-      type="image"
-      alt="${user.email}"
-      class="w-8 h-8 rounded-full text-white"
-      src="${user.avatar}"
-      onclick=${avatarClick}/>
-    <ul
-      id="accountMenu"
-      class="invisible list-reset absolute pin-t pin-r mt-10 pt-2 pb-2 bg-white shadow-md whitespace-no-wrap outline-none z-50"
-      onblur="${hideMenu}"
-      tabindex="-1">
-      <li class="p-2 text-grey-dark">${user.email}</li>
-      <li>
-        <a class="block px-4 py-2 text-grey-darkest hover:bg-blue hover:text-white cursor-pointer" onclick=${logout}>
-          ${state.translate('logOut')}
-        </a>
-      </li>
-    </ul>
-  </div>`;
 
-  function avatarClick(event) {
+  avatarClick(event) {
     event.preventDefault();
     const menu = document.getElementById('accountMenu');
     menu.classList.toggle('invisible');
     menu.focus();
   }
 
-  function hideMenu(event) {
+  hideMenu(event) {
     event.stopPropagation();
     const menu = document.getElementById('accountMenu');
     menu.classList.add('invisible');
   }
 
-  function login(event) {
+  login(event) {
     event.preventDefault();
-    emit('login');
+    this.emit('login');
   }
 
-  function logout(event) {
+  logout(event) {
     event.preventDefault();
-    emit('logout');
+    this.emit('logout');
   }
-};
+
+  changed() {
+    return this.local.loggedIn !== this.state.user.loggedIn;
+  }
+
+  setState() {
+    const changed = this.changed();
+    if (changed) {
+      this.local.loggedIn = this.state.user.loggedIn;
+    }
+    return changed;
+  }
+
+  update() {
+    return this.setState();
+  }
+
+  createElement() {
+    if (!this.enabled) {
+      return null;
+    }
+    const user = this.state.user;
+    const translate = this.state.translate;
+    if (!this.local.loggedIn) {
+      return html`
+      <div>
+        <button
+          class="p-2 border rounded border-white text-white hover:bg-white hover:text-blue md:text-blue md:border-blue md:hover:text-white md:hover:bg-blue"
+          onclick="${e => this.login(e)}"
+        >
+          ${translate('signInMenuOption')}
+        </button>
+      </div>
+      `;
+    }
+    return html`
+      <div class="relative h-8">
+        <input
+          type="image"
+          alt="${user.email}"
+          class="w-8 h-8 rounded-full text-white"
+          src="${user.avatar}"
+          onclick="${e => this.avatarClick(e)}"
+        />
+        <ul
+          id="accountMenu"
+          class="invisible list-reset absolute pin-t pin-r mt-10 pt-2 pb-2 bg-white shadow-md whitespace-no-wrap outline-none z-50"
+          onblur="${e => this.hideMenu(e)}"
+          tabindex="-1"
+        >
+          <li class="p-2 text-grey-dark">${user.email}</li>
+          <li>
+            <a
+              class="block px-4 py-2 text-grey-darkest hover:bg-blue hover:text-white cursor-pointer"
+              onclick="${e => this.logout(e)}"
+            >
+              ${translate('logOut')}
+            </a>
+          </li>
+        </ul>
+      </div>
+    `;
+  }
+}
+
+module.exports = Account;