Migrated Hosted Explorer to React (#360)

Co-authored-by: Victor Meng <vimeng@microsoft.com>
Co-authored-by: Steve Faulkner <stfaul@microsoft.com>

src/Platform/Hosted/Components/MeControl.tsx

@@ -0,0 +1,68 @@
+import {
+  FocusZone,
+  DefaultButton,
+  DirectionalHint,
+  Persona,
+  PersonaInitialsColor,
+  PersonaSize
+} from "office-ui-fabric-react";
+import * as React from "react";
+import { Account } from "msal";
+import { useGraphPhoto } from "../../../hooks/useGraphPhoto";
+
+interface Props {
+  graphToken: string;
+  account: Account;
+  openPanel: () => void;
+  logout: () => void;
+}
+
+export const MeControl: React.FunctionComponent<Props> = ({ openPanel, logout, account, graphToken }: Props) => {
+  const photo = useGraphPhoto(graphToken);
+  return (
+    <FocusZone>
+      <DefaultButton
+        id="mecontrolHeader"
+        className="mecontrolHeaderButton"
+        menuProps={{
+          className: "mecontrolContextualMenu",
+          isBeakVisible: false,
+          directionalHintFixed: true,
+          directionalHint: DirectionalHint.bottomRightEdge,
+          calloutProps: {
+            minPagePadding: 0
+          },
+          items: [
+            {
+              key: "SwitchDirectory",
+              text: "Switch Directory",
+              onClick: openPanel
+            },
+            {
+              key: "SignOut",
+              text: "Sign Out",
+              onClick: logout
+            }
+          ]
+        }}
+        styles={{
+          rootHovered: { backgroundColor: "#393939" },
+          rootFocused: { backgroundColor: "#393939" },
+          rootPressed: { backgroundColor: "#393939" },
+          rootExpanded: { backgroundColor: "#393939" }
+        }}
+      >
+        <Persona
+          imageUrl={photo}
+          text={account?.name}
+          secondaryText={account?.userName}
+          showSecondaryText={true}
+          showInitialsUntilImageLoads={true}
+          initialsColor={PersonaInitialsColor.teal}
+          size={PersonaSize.size28}
+          className="mecontrolHeaderPersona"
+        />
+      </DefaultButton>
+    </FocusZone>
+  );
+};