registration: redesign email verification page (#8554)

src/components/structures/auth/header/AuthHeaderContext.tsx

@@ -0,0 +1,26 @@
+/*
+Copyright 2022 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { createContext, Dispatch, ReducerAction, ReducerState } from "react";
+
+import type { AuthHeaderReducer } from "./AuthHeaderProvider";
+
+interface AuthHeaderContextType {
+    state: ReducerState<AuthHeaderReducer>;
+    dispatch: Dispatch<ReducerAction<AuthHeaderReducer>>;
+}
+
+export const AuthHeaderContext = createContext<AuthHeaderContextType>(undefined);

src/components/structures/auth/header/AuthHeaderDisplay.tsx

@@ -0,0 +1,41 @@
+/*
+Copyright 2022 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React, { Fragment, PropsWithChildren, ReactNode, useContext } from "react";
+
+import { AuthHeaderContext } from "./AuthHeaderContext";
+
+interface Props {
+    title: ReactNode;
+    icon?: ReactNode;
+    serverPicker: ReactNode;
+}
+
+export function AuthHeaderDisplay({ title, icon, serverPicker, children }: PropsWithChildren<Props>) {
+    const context = useContext(AuthHeaderContext);
+    if (!context) {
+        return null;
+    }
+    const current = context.state.length ? context.state[0] : null;
+    return (
+        <Fragment>
+            { current?.icon ?? icon }
+            <h2>{ current?.title ?? title }</h2>
+            { children }
+            { current?.hideServerPicker !== true && serverPicker }
+        </Fragment>
+    );
+}

src/components/structures/auth/header/AuthHeaderModifier.tsx

@@ -0,0 +1,39 @@
+/*
+Copyright 2022 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { ReactNode, useContext, useEffect } from "react";
+
+import { AuthHeaderContext } from "./AuthHeaderContext";
+import { AuthHeaderActionType } from "./AuthHeaderProvider";
+
+interface Props {
+    title: ReactNode;
+    icon?: ReactNode;
+    hideServerPicker?: boolean;
+}
+
+export function AuthHeaderModifier(props: Props) {
+    const context = useContext(AuthHeaderContext);
+    const dispatch = context ? context.dispatch : null;
+    useEffect(() => {
+        if (!dispatch) {
+            return;
+        }
+        dispatch({ type: AuthHeaderActionType.Add, value: props });
+        return () => dispatch({ type: AuthHeaderActionType.Remove, value: props });
+    }, [props, dispatch]);
+    return null;
+}

src/components/structures/auth/header/AuthHeaderProvider.tsx

@@ -0,0 +1,52 @@
+/*
+Copyright 2022 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { isEqual } from "lodash";
+import React, { ComponentProps, PropsWithChildren, Reducer, useReducer } from "react";
+
+import { AuthHeaderContext } from "./AuthHeaderContext";
+import { AuthHeaderModifier } from "./AuthHeaderModifier";
+
+export enum AuthHeaderActionType {
+    Add,
+    Remove
+}
+
+interface AuthHeaderAction {
+    type: AuthHeaderActionType;
+    value: ComponentProps<typeof AuthHeaderModifier>;
+}
+
+export type AuthHeaderReducer = Reducer<ComponentProps<typeof AuthHeaderModifier>[], AuthHeaderAction>;
+
+export function AuthHeaderProvider({ children }: PropsWithChildren<{}>) {
+    const [state, dispatch] = useReducer<AuthHeaderReducer>(
+        (state: ComponentProps<typeof AuthHeaderModifier>[], action: AuthHeaderAction) => {
+            switch (action.type) {
+                case AuthHeaderActionType.Add:
+                    return [action.value, ...state];
+                case AuthHeaderActionType.Remove:
+                    return (state.length && isEqual(state[0], action.value)) ? state.slice(1) : state;
+            }
+        },
+        [] as ComponentProps<typeof AuthHeaderModifier>[],
+    );
+    return (
+        <AuthHeaderContext.Provider value={{ state, dispatch }}>
+            { children }
+        </AuthHeaderContext.Provider>
+    );
+}