[docs] Revamp the notifications

docs/notifications.json

@@ -1,15 +1,20 @@
 [
-  {
-    "id": 27,
-    "text": "You can <a style=\"color: inherit;\" target=\"_blank\" rel=\"noopener\" href=\"https://twitter.com/MaterialUI\">follow us on Twitter</a> to receive exclusive tips and updates about Material-UI and the React ecosystem."
-  },
   {
     "id": 35,
-    "text": "Let's translate! <a style=\"color: inherit;\" target=\"_blank\" rel=\"noopener\" data-ga-event-category=\"l10n\" data-ga-event-action=\"notification\" data-ga-event-label=\"zh\" href=\"https://translate.material-ui.com/\">帮助 Material-UI 将文档翻译成中文</a>. 🇨🇳",
+    "title": "Let's translate!",
+    "text": "<a style=\"color: inherit;\" target=\"_blank\" rel=\"noopener\" data-ga-event-category=\"l10n\" data-ga-event-action=\"notification\" data-ga-event-label=\"zh\" href=\"https://translate.material-ui.com/\">帮助 Material-UI 将文档翻译成中文</a>. 🇨🇳",
     "userLanguage": "zh"
   },
+  {
+    "id": 47,
+    "date": "2020-01-25",
+    "title": "New blog post",
+    "text": "<a style=\"color: inherit;\" target=\"_blank\" rel=\"noopener\" href=\"https://medium.com/material-ui/2019-in-review-and-beyond-34f85e29926\">2019 in review and beyond</a>. 2019 was a great year for Material-UI. It puts us on an exciting path to solve even greater challenges in the coming years!"
+  },
   {
     "id": 48,
-    "text": "Material-UI is hiring <a style=\"color: inherit;\" target=\"_blank\" rel=\"noopener\" href=\"https://material-ui.com/company/software-engineer/\">a senior software developer</a>."
+    "date": "2020-02-08",
+    "title": "Material-UI is hiring",
+    "text": "We're looking for <a style=\"color: inherit;\" target=\"_blank\" rel=\"noopener\" href=\"https://material-ui.com/company/software-engineer/\">a senior software developer</a> to join the team."
   }
-]
+]

docs/src/modules/components/AppFrame.js

@@ -204,7 +204,6 @@ function AppFrame(props) {
       <MuiLink color="secondary" className={classes.skipNav} href="#main-content">
         {t('skipToContent')}
       </MuiLink>
-      <Notifications />
       <MarkdownLinks />
       <AppBar className={appBarClassName}>
         <Toolbar>
@@ -320,6 +319,7 @@ function AppFrame(props) {
               )}
             </IconButton>
           </Tooltip>
+          <Notifications />
           <Tooltip title={t('github')} enterDelay={300}>
             <IconButton
               edge="end"

docs/src/modules/components/Notifications.js

@@ -2,11 +2,37 @@
 import 'isomorphic-fetch';
 import React from 'react';
 import { useSelector } from 'react-redux';
-import Button from '@material-ui/core/Button';
-import { useRouter } from 'next/router';
-import Snackbar from '@material-ui/core/Snackbar';
+import { makeStyles } from '@material-ui/core/styles';
+import NotificationsIcon from '@material-ui/icons/Notifications';
+import Tooltip from '@material-ui/core/Tooltip';
+import IconButton from '@material-ui/core/IconButton';
+import Badge from '@material-ui/core/Badge';
+import Popper from '@material-ui/core/Popper';
+import Grow from '@material-ui/core/Grow';
+import Paper from '@material-ui/core/Paper';
+import ClickAwayListener from '@material-ui/core/ClickAwayListener';
+import List from '@material-ui/core/List';
+import ListItem from '@material-ui/core/ListItem';
+import ListItemText from '@material-ui/core/ListItemText';
+import Divider from '@material-ui/core/Divider';
 import sleep from 'modules/waterfall/sleep';
 import { getCookie } from 'docs/src/modules/utils/helpers';
+import notifications from '../../../notifications.json';
+
+const useStyles = makeStyles(theme => ({
+  paper: {
+    transformOrigin: 'top right',
+  },
+  list: {
+    maxWidth: theme.spacing(40),
+    maxHeight: theme.spacing(40),
+    overflow: 'auto',
+  },
+  listItem: {
+    display: 'flex',
+    flexDirection: 'column',
+  },
+}));
 
 function getLastSeenNotification() {
   const seen = getCookie('lastSeenNotification');
@@ -15,6 +41,10 @@ function getLastSeenNotification() {
 
 let messages = null;
 
+if (process.env.NODE_ENV !== 'production') {
+  messages = notifications;
+}
+
 async function getMessages() {
   try {
     if (!messages) {
@@ -32,43 +62,58 @@ async function getMessages() {
 }
 
 export default function Notifications() {
+  const classes = useStyles();
+  const [messageList, setMessageList] = React.useState([]);
+  const [unseenNotificationsCount, setUnseenNotificationsCount] = React.useState(0);
   const [open, setOpen] = React.useState(false);
-  const [message, setMessage] = React.useState({});
-  const { route } = useRouter();
+  const [tooltipOpen, setTooltipOpen] = React.useState(false);
+  const anchorRef = React.useRef(null);
   const t = useSelector(state => state.options.t);
   const userLanguage = useSelector(state => state.options.userLanguage);
 
+  const handleToggle = () => {
+    setOpen(prevOpen => !prevOpen);
+    setTooltipOpen(false);
+    setUnseenNotificationsCount(0);
+    document.cookie = `lastSeenNotification=${messageList[0].id};path=/;max-age=31536000`;
+  };
+
+  const handleClose = () => {
+    setOpen(false);
+  };
+
+  const handleTooltipOpen = () => {
+    setTooltipOpen(!open);
+  };
+
+  const handleTooltipClose = () => {
+    setTooltipOpen(false);
+  };
+
   const handleMessage = () => {
     const lastSeen = getLastSeenNotification();
-    const unseenMessages = messages.filter(message2 => {
-      if (message2.id <= lastSeen) {
-        return false;
-      }
 
+    const userMessages = messages.filter(message => {
       if (
-        message2.userLanguage &&
-        message2.userLanguage !== userLanguage &&
-        message2.userLanguage !== navigator.language.substring(0, 2)
+        message.userLanguage &&
+        message.userLanguage !== userLanguage &&
+        message.userLanguage !== navigator.language.substring(0, 2)
       ) {
         return false;
       }
-
-      if (message2.route && message2.route !== route) {
-        return false;
-      }
-
       return true;
     });
 
-    if (unseenMessages.length > 0) {
-      setMessage(unseenMessages[0]);
-      setOpen(true);
+    const unseenCount = userMessages.reduce(
+      (count, message) => (message.id > lastSeen ? count + 1 : count),
+      0,
+    );
+
+    if (unseenCount > 0) {
+      setUnseenNotificationsCount(unseenCount);
     }
-  };
 
-  const handleClose = () => {
-    setOpen(false);
-    document.cookie = `lastSeenNotification=${message.id};path=/;max-age=31536000`;
+    setMessageList(userMessages.reverse());
   };
 
   React.useEffect(() => {
@@ -89,25 +134,78 @@ export default function Notifications() {
     return () => {
       active = false;
     };
-  }, [route]);
+  }, []);
 
   return (
-    <Snackbar
-      key={message.id}
-      anchorOrigin={{ vertical: 'top', horizontal: 'center' }}
-      ContentProps={{ 'aria-describedby': 'notification-message' }}
-      message={
-        <span id="notification-message" dangerouslySetInnerHTML={{ __html: message.text }} />
-      }
-      action={
-        <Button size="small" color="secondary" onClick={handleClose}>
-          {t('close')}
-        </Button>
-      }
-      open={open}
-      autoHideDuration={20e3}
-      onClose={handleClose}
-      onExited={handleMessage}
-    />
+    <React.Fragment>
+      <Tooltip
+        open={tooltipOpen}
+        onOpen={handleTooltipOpen}
+        onClose={handleTooltipClose}
+        title={t('toggleNotifications')}
+        enterDelay={300}
+      >
+        <IconButton
+          color="inherit"
+          ref={anchorRef}
+          aria-controls={open ? 'notifications-popup' : undefined}
+          aria-haspopup="true"
+          aria-label={t('toggleNotifications')}
+          onClick={handleToggle}
+          data-ga-event-category="AppBar"
+          data-ga-event-action="toggleNotifications"
+        >
+          <Badge color="secondary" badgeContent={unseenNotificationsCount}>
+            <NotificationsIcon />
+          </Badge>
+        </IconButton>
+      </Tooltip>
+      <Popper
+        id="notifications-popup"
+        anchorEl={anchorRef.current}
+        open={open}
+        placement="bottom-end"
+        transition
+        disablePortal
+        role={undefined}
+      >
+        {({ TransitionProps }) => (
+          <ClickAwayListener onClickAway={handleClose}>
+            <Grow in={open} {...TransitionProps}>
+              <Paper className={classes.paper}>
+                <List className={classes.list}>
+                  {messageList.map((message, index) => (
+                    <React.Fragment key={message.id}>
+                      <ListItem alignItems="flex-start" className={classes.listItem}>
+                        {message.date && (
+                          <ListItemText
+                            secondary={new Date(message.date).toLocaleDateString('en-US', {
+                              year: 'numeric',
+                              month: 'long',
+                              day: 'numeric',
+                            })}
+                          />
+                        )}
+                        <ListItemText
+                          primary={message.title}
+                          secondary={
+                            <span
+                              id="notification-message"
+                              dangerouslySetInnerHTML={{ __html: message.text }}
+                            />
+                          }
+                          secondaryTypographyProps={{ color: 'textPrimary' }}
+                        />
+                      </ListItem>
+                      {index < messageList.length - 1 ? <Divider variant="middle" /> : null}
+                    </React.Fragment>
+                  ))}
+                </List>
+              </Paper>
+            </Grow>
+          </ClickAwayListener>
+        )}
+      </Popper>
+    </React.Fragment>
   );
 }

docs/translations/translations.json

@@ -5,6 +5,7 @@
   "useDarkTheme": "Use dark theme",
   "toggleTheme": "Toggle light/dark theme",
   "toggleRTL": "Toggle right-to-left/left-to-right",
+  "toggleNotifications": "Toggle notifications panel",
   "github": "GitHub repository",
   "strapline": "React components for faster and easier web development. Build your own design system, or start with Material Design.",
   "getStarted": "Get Started",