feat: Installable PWA (#1882)

app/components/CenteredContent.js

@@ -11,7 +11,7 @@ type Props = {|
 const Container = styled.div`
   width: 100%;
   max-width: 100vw;
-  padding: ${(props) => (props.withStickyHeader ? "4px 20px" : "60px 20px")};
+  padding: ${(props) => (props.withStickyHeader ? "4px 12px" : "60px 12px")};
 
   ${breakpoint("tablet")`
     padding: ${(props) => (props.withStickyHeader ? "4px 60px" : "60px")};

app/components/DocumentListItem.js

@@ -163,8 +163,11 @@ const DocumentLink = styled(Link)`
   padding: 6px 8px;
   border-radius: 8px;
   max-height: 50vh;
-  min-width: 100%;
-  max-width: calc(100vw - 40px);
+  width: calc(100vw - 8px);
+
+  ${breakpoint("tablet")`
+    width: auto;
+  `};
 
   ${Actions} {
     opacity: 0;

app/components/Layout.js

@@ -7,7 +7,7 @@ import { Helmet } from "react-helmet";
 import { withTranslation, type TFunction } from "react-i18next";
 import keydown from "react-keydown";
 import { Switch, Route, Redirect } from "react-router-dom";
-import styled, { withTheme } from "styled-components";
+import styled from "styled-components";
 import breakpoint from "styled-components-breakpoint";
 import AuthStore from "stores/AuthStore";
 import DocumentsStore from "stores/DocumentsStore";
@@ -24,7 +24,6 @@ import Sidebar from "components/Sidebar";
 import SettingsSidebar from "components/Sidebar/Settings";
 import SkipNavContent from "components/SkipNavContent";
 import SkipNavLink from "components/SkipNavLink";
-import { type Theme } from "types";
 import { meta } from "utils/keyboard";
 import {
   homeUrl,
@@ -40,7 +39,6 @@ type Props = {
   auth: AuthStore,
   ui: UiStore,
   notifications?: React.Node,
-  theme: Theme,
   i18n: Object,
   t: TFunction,
 };
@@ -51,24 +49,12 @@ class Layout extends React.Component<Props> {
   @observable redirectTo: ?string;
   @observable keyboardShortcutsOpen: boolean = false;
 
-  constructor(props: Props) {
-    super();
-    this.updateBackground(props);
-  }
-
   componentDidUpdate() {
-    this.updateBackground(this.props);
-
     if (this.redirectTo) {
       this.redirectTo = undefined;
     }
   }
 
-  updateBackground(props: Props) {
-    // ensure the wider page color always matches the theme
-    window.document.body.style.background = props.theme.background;
-  }
-
   @keydown(`${meta}+.`)
   handleToggleSidebar() {
     this.props.ui.toggleCollapsedSidebar();
@@ -212,5 +198,5 @@ const Content = styled(Flex)`
 `;
 
 export default withTranslation()<Layout>(
-  inject("auth", "ui", "documents")(withTheme(Layout))
+  inject("auth", "ui", "documents")(Layout)
 );

app/components/PageTheme.js

@@ -0,0 +1,35 @@
+// @flow
+import * as React from "react";
+import { useTheme } from "styled-components";
+import useStores from "hooks/useStores";
+
+export default function PageTheme() {
+  const { ui } = useStores();
+  const theme = useTheme();
+
+  React.useEffect(() => {
+    // wider page background beyond the React root
+    if (document.body) {
+      document.body.style.background = theme.background;
+    }
+
+    // theme-color adjusts the title bar color for desktop PWA
+    const themeElement = document.querySelector('meta[name="theme-color"]');
+    if (themeElement) {
+      themeElement.setAttribute("content", theme.background);
+    }
+
+    // status bar color for iOS PWA
+    const statusElement = document.querySelector(
+      'meta[name="apple-mobile-web-app-status-bar-style"]'
+    );
+    if (statusElement) {
+      statusElement.setAttribute(
+        "content",
+        ui.resolvedTheme === "dark" ? "black-translucent" : "default"
+      );
+    }
+  }, [theme, ui.resolvedTheme]);
+
+  return null;
+}

app/components/Sidebar/components/Toggle.js

@@ -46,6 +46,7 @@ export const ToggleButton = styled.button`
 `;
 
 export const Positioner = styled.div`
+  display: none;
   z-index: 2;
   position: absolute;
   top: 0;
@@ -56,6 +57,10 @@ export const Positioner = styled.div`
   &:hover ${ToggleButton}, &:focus-within ${ToggleButton} {
     opacity: 1;
   }
+
+  ${breakpoint("tablet")`
+    display: block;
+  `}
 `;
 
 export default Toggle;

app/components/Subheading.js

@@ -33,7 +33,7 @@ const Sticky = styled.div`
   padding: 0 8px;
   background: ${(props) => props.theme.background};
   transition: ${(props) => props.theme.backgroundTransition};
-  z-index: ${(props) => props.theme.depths.stickyHeader};
+  z-index: 1;
 `;
 
 const Subheading = ({ children, ...rest }: Props) => {

app/components/Tabs.js

@@ -19,7 +19,7 @@ const Sticky = styled.div`
   padding: 0 8px;
   background: ${(props) => props.theme.background};
   transition: ${(props) => props.theme.backgroundTransition};
-  z-index: ${(props) => props.theme.depths.stickyHeader};
+  z-index: 1;
 `;
 
 export const Separator = styled.span`

app/index.js

@@ -10,6 +10,7 @@ import { Router } from "react-router-dom";
 import { initI18n } from "shared/i18n";
 import stores from "stores";
 import ErrorBoundary from "components/ErrorBoundary";
+import PageTheme from "components/PageTheme";
 import ScrollToTop from "components/ScrollToTop";
 import Theme from "components/Theme";
 import Toasts from "components/Toasts";
@@ -19,13 +20,28 @@ import { initSentry } from "utils/sentry";
 
 initI18n();
 
-const element = document.getElementById("root");
+const element = window.document.getElementById("root");
 const history = createBrowserHistory();
 
 if (env.SENTRY_DSN) {
   initSentry(history);
 }
 
+if ("serviceWorker" in window.navigator) {
+  window.addEventListener("load", () => {
+    window.navigator.serviceWorker
+      .register("/static/service-worker.js", {
+        scope: "/",
+      })
+      .then((registration) => {
+        console.log("SW registered: ", registration);
+      })
+      .catch((registrationError) => {
+        console.log("SW registration failed: ", registrationError);
+      });
+  });
+}
+
 if (element) {
   render(
     <Provider {...stores}>
@@ -34,6 +50,7 @@ if (element) {
           <DndProvider backend={HTML5Backend}>
             <Router history={history}>
               <>
+                <PageTheme />
                 <ScrollToTop>
                   <Routes />
                 </ScrollToTop>

app/scenes/Document/components/DataLoader.js

@@ -7,7 +7,6 @@ import { observer, inject } from "mobx-react";
 import * as React from "react";
 import type { RouterHistory, Match } from "react-router-dom";
 import { withRouter } from "react-router-dom";
-import { withTheme } from "styled-components";
 import parseDocumentSlug from "shared/utils/parseDocumentSlug";
 import DocumentsStore from "stores/DocumentsStore";
 import PoliciesStore from "stores/PoliciesStore";
@@ -22,7 +21,7 @@ import DocumentComponent from "./Document";
 import HideSidebar from "./HideSidebar";
 import Loading from "./Loading";
 import SocketPresence from "./SocketPresence";
-import { type LocationWithState, type Theme } from "types";
+import { type LocationWithState } from "types";
 import { NotFoundError, OfflineError } from "utils/errors";
 import { matchDocumentEdit, updateDocumentUrl } from "utils/routeHelpers";
 import { isInternalUrl } from "utils/urls";
@@ -35,7 +34,6 @@ type Props = {|
   policies: PoliciesStore,
   revisions: RevisionsStore,
   ui: UiStore,
-  theme: Theme,
   history: RouterHistory,
 |};
 
@@ -49,7 +47,6 @@ class DataLoader extends React.Component<Props> {
     const { documents, match } = this.props;
     this.document = documents.getByUrl(match.params.documentSlug);
     this.loadDocument();
-    this.updateBackground();
   }
 
   componentDidUpdate(prevProps: Props) {
@@ -74,13 +71,6 @@ class DataLoader extends React.Component<Props> {
     ) {
       this.loadRevision();
     }
-    this.updateBackground();
-  }
-
-  updateBackground() {
-    // ensure the wider page color always matches the theme. This is to
-    // account for share links which don't sit in the wider Layout component
-    window.document.body.style.background = this.props.theme.background;
   }
 
   get isEditing() {
@@ -266,5 +256,5 @@ export default withRouter(
     "revisions",
     "policies",
     "shares"
-  )(withTheme(DataLoader))
+  )(DataLoader)
 );

app/scenes/Document/components/Document.js

@@ -480,7 +480,7 @@ const ReferencesWrapper = styled("div")`
 const MaxWidth = styled(Flex)`
   ${(props) =>
     props.archived && `* { color: ${props.theme.textSecondary} !important; } `};
-  padding: 0 16px;
+  padding: 0 12px;
   max-width: 100vw;
   width: 100%;