src/App.tsx

@@ -27,6 +27,7 @@ import {
 import { Service } from "./serviceworker/services.js";
 import { makeEventListener } from "@solid-primitives/event-listener";
 import { ServiceWorkerProvider } from "./platform/host.js";
+import StackedRouter from "./platform/StackedRouter.js";
 
 const AccountSignIn = lazy(() => import("./accounts/SignIn.js"));
 const AccountMastodonOAuth2Callback = lazy(
@@ -37,24 +38,21 @@ const Settings = lazy(() => import("./settings/Settings.js"));
 const TootBottomSheet = lazy(() => import("./timelines/TootBottomSheet.js"));
 const MotionSettings = lazy(() => import("./settings/Motions.js"));
 const LanguageSettings = lazy(() => import("./settings/Language.js"));
-const RegionSettings = lazy(() => import("./settings/Region.jsx"));
+const RegionSettings = lazy(() => import("./settings/Region.js"));
 const UnexpectedError = lazy(() => import("./UnexpectedError.js"));
 const Profile = lazy(() => import("./profiles/Profile.js"));
 
 const Routing: Component = () => {
   return (
-    <Router>
+    <StackedRouter>
-      <Route path="/" component={TimelineHome}>
+      <Route path="/" component={TimelineHome} />
-        <Route path=""></Route>
+      <Route path="/settings" component={Settings} />
-        <Route path="/settings" component={Settings}>
+      <Route path="/settings/language" component={LanguageSettings} />
-          <Route path=""></Route>
+      <Route path="/settings/region" component={RegionSettings} />
-          <Route path="/language" component={LanguageSettings}></Route>
+      <Route path="/motions" component={MotionSettings} />
-          <Route path="/region" component={RegionSettings}></Route>
+      <Route path="/:acct/toot/:id" component={TootBottomSheet} />
-          <Route path="/motions" component={MotionSettings}></Route>
+      <Route path="/:acct/profile/:id" component={Profile} />
-        </Route>
+
-        <Route path="/:acct/toot/:id" component={TootBottomSheet}></Route>
-        <Route path="/:acct/profile/:id" component={Profile}></Route>
-      </Route>
       <Route path={"/accounts"}>
         <Route path={"/sign-in"} component={AccountSignIn} />
         <Route
@@ -62,7 +60,7 @@ const Routing: Component = () => {
           component={AccountMastodonOAuth2Callback}
         />
       </Route>
-    </Router>
+    </StackedRouter>
   );
 };
 
@@ -70,7 +68,9 @@ const App: Component = () => {
   const theme = useRootTheme();
   const accts = useStore($accounts);
   const lang = useLanguage();
-  const [serviceWorker, setServiceWorker] = createSignal<ServiceWorker>();
+  const [serviceWorker, setServiceWorker] = createSignal<
+    ServiceWorker | undefined
+  >(undefined, { name: "serviceWorker" });
   const dispatcher = new ResultDispatcher();
 
   let checkAge = 0;

src/accounts/MastodonOAuth2Callback.tsx

@@ -1,4 +1,4 @@
-import { useNavigate, useSearchParams } from "@solidjs/router";
+import { useSearchParams } from "@solidjs/router";
 import {
   Component,
   Show,
@@ -14,6 +14,7 @@ import { LinearProgress } from "@suid/material";
 import Img from "../material/Img";
 import { createRestAPIClient } from "masto";
 import { Title } from "../material/typography";
+import { useNavigator } from "../platform/StackedRouter";
 
 type OAuth2CallbackParams = {
   code?: string;
@@ -25,7 +26,7 @@ const MastodonOAuth2Callback: Component = () => {
   const progressId = createUniqueId();
   const titleId = createUniqueId();
   const [params] = useSearchParams<OAuth2CallbackParams>();
-  const navigate = useNavigate();
+  const { push: navigate } = useNavigator();
   const setDocumentTitle = useDocumentTitle("Back from Mastodon...");
   const [siteImg, setSiteImg] = createSignal<{
     src: string;

src/masto/clients.ts

@@ -8,7 +8,8 @@ import {
 } from "solid-js";
 import { Account } from "../accounts/stores";
 import { createRestAPIClient, mastodon } from "masto";
-import { useLocation, useNavigate } from "@solidjs/router";
+import { useLocation } from "@solidjs/router";
+import { useNavigator } from "../platform/StackedRouter";
 
 const restfulCache: Record<string, mastodon.rest.Client> = {};
 
@@ -56,12 +57,12 @@ export const Provider = Context.Provider;
 
 export function useSessions() {
   const sessions = useSessionsRaw();
-  const navigate = useNavigate();
+  const {push} = useNavigator();
   const location = useLocation();
 
   createRenderEffect(() => {
     if (sessions().length > 0) return;
-    navigate(
+    push(
       "/accounts/sign-in?back=" + encodeURIComponent(location.pathname),
       { replace: true },
     );

src/material/BottomSheet.css

@@ -25,22 +25,6 @@
 
   box-shadow: var(--tutu-shadow-e16);
 
-  .MuiToolbar-root {
-    >.MuiButtonBase-root {
-
-      &:first-child {
-        margin-left: -0.5em;
-        margin-right: 24px;
-      }
-
-      &:last-child {
-        margin-right: -0.5em;
-        margin-left: 24px;
-      }
-
-    }
-  }
-
   @media (max-width: 560px) {
     & {
       left: 0;

src/material/Scaffold.css

@@ -1,18 +1,32 @@
-
+.Scaffold>.topbar {
-.Scaffold__topbar {
   position: sticky;
   top: 0px;
   z-index: var(--tutu-zidx-nav, auto);
+
+  .MuiToolbar-root {
+    >.MuiButtonBase-root {
+      &:first-child {
+        margin-left: -0.5em;
+        margin-right: 24px;
+      }
+
+      &:last-child {
+        margin-right: -0.5em;
+        margin-left: 24px;
+      }
+
+    }
+  }
 }
 
-.Scaffold__fab-dock {
+.Scaffold>.fab-dock {
   position: fixed;
   bottom: 40px;
   right: 40px;
   z-index: var(--tutu-zidx-nav, auto);
 }
 
-.Scaffold__bottom-dock {
+.Scaffold>.bottom-dock {
   position: sticky;
   bottom: 0;
   left: 0;
@@ -20,3 +34,9 @@
   z-index: var(--tutu-zidx-nav, auto);
   padding-bottom: var(--safe-area-inset-bottom, 0);
 }
+
+.Scaffold {
+  height: 100%;
+  width: 100%;
+  background-color: var(--tutu-color-surface);
+}

src/material/Scaffold.tsx

@@ -28,22 +28,15 @@ const Scaffold: Component<ScaffoldProps> = (props) => {
     "bottom",
     "children",
     "ref",
+    "class",
   ]);
   const [topbarElement, setTopbarElement] = createSignal<HTMLElement>();
 
   const topbarSize = createElementSize(topbarElement);
 
   return (
-    <>
-      <Show when={props.topbar}>
-        <div class="Scaffold__topbar" ref={setTopbarElement} role="presentation">
-          {props.topbar}
-        </div>
-      </Show>
-      <Show when={props.fab}>
-        <div class="Scaffold__fab-dock" role="presentation">{props.fab}</div>
-      </Show>
     <div
+      class={`Scaffold ${managed.class || ""}`}
       ref={(e) => {
         createRenderEffect(() => {
           e.style.setProperty(
@@ -58,12 +51,25 @@ const Scaffold: Component<ScaffoldProps> = (props) => {
       }}
       {...rest}
     >
-        {managed.children}
+      <Show when={props.topbar}>
+        <div class="topbar" ref={setTopbarElement} role="presentation">
+          {props.topbar}
         </div>
-      <Show when={props.bottom}>
-        <div class="Scaffold__bottom-dock" role="presentation">{props.bottom}</div>
       </Show>
-    </>
+      <Show when={props.fab}>
+        <div class="fab-dock" role="presentation">
+          {props.fab}
+        </div>
+      </Show>
+
+      {managed.children}
+
+      <Show when={props.bottom}>
+        <div class="bottom-dock" role="presentation">
+          {props.bottom}
+        </div>
+      </Show>
+    </div>
   );
 };
 

src/platform/A.tsx

@@ -0,0 +1,19 @@
+import { type JSX } from "solid-js";
+import { useNavigator } from "./StackedRouter";
+
+function handleClick(
+  push: (name: string, state: unknown) => void,
+  event: MouseEvent & { currentTarget: HTMLAnchorElement },
+) {
+  const target = event.currentTarget;
+  event.preventDefault();
+  event.stopPropagation();
+  push(target.href, { state: target.getAttribute("state") || undefined });
+}
+
+const A = (oprops: JSX.HTMLElementTags["a"]) => {
+  const { push } = useNavigator();
+  return <a onClick={[handleClick, push]} {...oprops}></a>;
+};
+
+export default A;

src/platform/BackButton.tsx

@@ -0,0 +1,24 @@
+import type { IconButtonProps } from "@suid/material/IconButton";
+import IconButton from "@suid/material/IconButton";
+import { Show, type Component } from "solid-js";
+import { useCurrentFrame, useNavigator } from "./StackedRouter";
+import { ArrowBack, Close } from "@suid/icons-material";
+
+export type BackButtonProps = Omit<IconButtonProps, "onClick" | "children">;
+
+const BackButton: Component<BackButtonProps> = (props) => {
+  const currentFrame = useCurrentFrame();
+  const { pop } = useNavigator();
+
+  const hasPrevSubPage = () => currentFrame().index > 1;
+
+  return (
+    <IconButton onClick={[pop, 1]} {...props}>
+      <Show when={hasPrevSubPage()} fallback={<Close />}>
+        <ArrowBack />
+      </Show>
+    </IconButton>
+  );
+};
+
+export default BackButton;

src/platform/StackedRouter.css

@@ -0,0 +1,52 @@
+.StackedPage {
+  container: StackedPage / size;
+  display: contents;
+  max-width: 100vw;
+  max-width: 100dvw;
+}
+
+dialog.StackedPage {
+  border: none;
+  position: fixed;
+  padding: 0;
+  overscroll-behavior: none;
+  width: 560px;
+  max-height: 100vh;
+  max-height: 100dvh;
+  background: none;
+  display: none;
+
+  contain: strict;
+  contain-intrinsic-size: auto 560px auto 100vh;
+  contain-intrinsic-size: auto 560px auto 100dvh;
+  content-visibility: auto;
+
+  box-shadow: var(--tutu-shadow-e16);
+
+  @media (min-width: 560px) {
+    & {
+      left: 50%;
+      transform: translateX(-50%);
+    }
+  }
+
+  @media (max-width: 560px) {
+    & {
+      width: 100vw;
+      width: 100dvw;
+      height: 100vh;
+      height: 100dvh;
+      contain-intrinsic-size: 100vw 100vh;
+      contain-intrinsic-size: 100dvw 100dvh;
+    }
+
+  }
+
+  &[open] {
+    display: contents;
+  }
+
+  &::backdrop {
+    background: none;
+  }
+}

src/platform/StackedRouter.tsx

@@ -0,0 +1,228 @@
+import { StaticRouter, type RouterProps } from "@solidjs/router";
+import {
+  Component,
+  createContext,
+  createEffect,
+  createRenderEffect,
+  createUniqueId,
+  Index,
+  onMount,
+  Show,
+  untrack,
+  useContext,
+  type Accessor,
+} from "solid-js";
+import { createStore, unwrap } from "solid-js/store";
+import { insert, render } from "solid-js/web";
+import "./StackedRouter.css";
+import { animateSlideInFromRight } from "./anim";
+import { ANIM_CURVE_DECELERATION, ANIM_CURVE_STD } from "../material/theme";
+
+export type StackedRouterProps = Omit<RouterProps, "url">;
+
+export type StackFrame = {
+  path: string;
+  rootId: string;
+  state: unknown;
+  beforeShow?: (element: HTMLElement) => void;
+};
+
+export type NewFrameOptions<T> = (T extends undefined
+  ? {
+      state?: T;
+    }
+  : { state: T }) & {
+  replace?: boolean;
+};
+
+export type FramePusher<T, K extends keyof T = keyof T> = T[K] extends
+  | undefined
+  | any
+  ? (path: K, state?: Readonly<NewFrameOptions<T[K]>>) => Readonly<StackFrame>
+  : (path: K, state: Readonly<NewFrameOptions<T[K]>>) => Readonly<StackFrame>;
+
+export type Navigator<PushGuide = Record<string, any>> = {
+  frames: readonly StackFrame[];
+  push: FramePusher<PushGuide>;
+  pop: (depth?: number) => void;
+};
+
+const NavigatorContext = /* @__PURE__ */ createContext<Navigator>();
+
+/**
+ * Get the navigator of the {@link StackedRouter}.
+ *
+ * This function returns a {@link Navigator} without available
+ * push guide. Push guide is a record type contains available
+ * path and its state. If you need push guide, you may want to
+ * define your own function (like `useAppNavigator`) and cast the
+ * navigator to the type you need.
+ */
+export function useNavigator() {
+  const navigator = useContext(NavigatorContext);
+
+  if (!navigator) {
+    throw new TypeError("not in available scope of StackedRouter");
+  }
+
+  return navigator;
+}
+
+export type CurrentFrame = {
+  index: number;
+  frame: Readonly<StackFrame>;
+};
+
+const CurrentFrameContext =
+  /* @__PURE__ */ createContext<Accessor<Readonly<CurrentFrame>>>();
+
+export function useCurrentFrame() {
+  const frame = useContext(CurrentFrameContext);
+
+  if (!frame) {
+    throw new TypeError("not in available scope of StackedRouter");
+  }
+
+  return frame;
+}
+
+function onDialogClick(
+  onClose: () => void,
+  event: MouseEvent & { currentTarget: HTMLDialogElement },
+) {
+  if (event.target !== event.currentTarget) return;
+  const rect = event.currentTarget.getBoundingClientRect();
+  const isNotInDialog =
+    event.clientY < rect.top ||
+    event.clientY > rect.bottom ||
+    event.clientX < rect.left ||
+    event.clientX > rect.right;
+  if (isNotInDialog) {
+    onClose();
+  }
+}
+
+/**
+ * The router that stacks the pages.
+ */
+const StackedRouter: Component<StackedRouterProps> = (oprops) => {
+  const [stack, mutStack] = createStore([] as StackFrame[], { name: "stack" });
+
+  const pushFrame = (path: string, opts?: Readonly<NewFrameOptions<any>>) =>
+    untrack(() => {
+      const frame = {
+        path,
+        state: opts?.state,
+        rootId: createUniqueId(),
+      };
+      mutStack(opts?.replace ? stack.length - 1 : stack.length, frame);
+      return frame;
+    });
+
+  const popFrame = (depth: number = 1) =>
+    untrack(() => {
+      if (import.meta.env.DEV) {
+        if (depth < 0) {
+          console.warn("the depth to pop should not < 0, now is", depth);
+        }
+      }
+      if (stack.length > 1) {
+        const lastFrame = stack[stack.length - 1];
+        const element = document.getElementById(lastFrame.rootId)!;
+        requestAnimationFrame(() => {
+          const animation = element.animate(
+            {
+              opacity: [0.5, 0],
+            },
+            { easing: ANIM_CURVE_STD, duration: 220 },
+          );
+          animation.addEventListener("finish", () =>
+            mutStack((o) => o.toSpliced(o.length - depth, depth)),
+          );
+        });
+      } else {
+        mutStack((o) => {
+          return o.toSpliced(o.length - depth, depth);
+        });
+      }
+    });
+
+  /* createEffect(() => {
+    const length = stack.length;
+    console.debug("stack is changed", length, unwrap(stack));
+  }); */
+
+  createRenderEffect(() => {
+    if (stack.length === 0) {
+      pushFrame("/", undefined);
+    }
+  });
+
+  const onBeforeDialogMount = (element: HTMLDialogElement) => {
+    createEffect(() => {
+      requestAnimationFrame(() => {
+        element.showModal();
+        if (window.innerWidth <= 560) {
+          animateSlideInFromRight(element, { easing: ANIM_CURVE_DECELERATION });
+        } else {
+          element.animate(
+            {
+              opacity: [0.5, 1],
+            },
+            { easing: ANIM_CURVE_STD, duration: 220 },
+          );
+        }
+      });
+    });
+  };
+
+  return (
+    <NavigatorContext.Provider
+      value={{
+        push: pushFrame,
+        pop: popFrame,
+        frames: stack,
+      }}
+    >
+      <Index each={stack}>
+        {(frame, index) => {
+          const currentFrame = () => {
+            return {
+              index,
+              frame: frame(),
+            };
+          };
+
+          return (
+            <CurrentFrameContext.Provider value={currentFrame}>
+              <Show
+                when={index !== 0}
+                fallback={
+                  <div
+                    class="StackedPage"
+                    id={frame().rootId}
+                    role="presentation"
+                  >
+                    <StaticRouter url={frame().path} {...oprops} />
+                  </div>
+                }
+              >
+                <dialog
+                  ref={onBeforeDialogMount}
+                  class="StackedPage"
+                  onCancel={[popFrame, 1]}
+                  onClick={[onDialogClick, popFrame]}
+                  id={frame().rootId}
+                >
+                  <StaticRouter url={frame().path} {...oprops} />
+                </dialog>
+              </Show>
+            </CurrentFrameContext.Provider>
+          );
+        }}
+      </Index>
+    </NavigatorContext.Provider>
+  );
+};
+
+export default StackedRouter;

src/profiles/Profile.css

@@ -1,4 +1,6 @@
 .Profile {
+  height: 100%;
+
   .intro {
     background-color: var(--tutu-color-surface-d);
     color: var(--tutu-color-on-surface);

src/profiles/Profile.tsx

@@ -45,7 +45,7 @@ import {
   Verified,
 } from "@suid/icons-material";
 import { Body2, Title } from "../material/typography";
-import { useNavigate, useParams } from "@solidjs/router";
+import { useParams } from "@solidjs/router";
 import { useSessionForAcctStr } from "../masto/clients";
 import { resolveCustomEmoji } from "../masto/toot";
 import { FastAverageColor } from "fast-average-color";
@@ -57,9 +57,10 @@ import TootFilterButton from "./TootFilterButton";
 import Menu, { createManagedMenuState } from "../material/Menu";
 import { share } from "../platform/share";
 import "./Profile.css";
+import { useNavigator } from "../platform/StackedRouter";
 
 const Profile: Component = () => {
-  const navigate = useNavigate();
+  const { pop } = useNavigator();
   const params = useParams<{ acct: string; id: string }>();
   const acctText = () => decodeURIComponent(params.acct);
   const session = useSessionForAcctStr(acctText);
@@ -209,11 +210,7 @@ const Profile: Component = () => {
               paddingTop: "var(--safe-area-inset-top)",
             }}
           >
-            <IconButton
+            <IconButton color="inherit" onClick={[pop, 1]} aria-label="Close">
-              color="inherit"
-              onClick={[navigate, -1]}
-              aria-label="Close"
-            >
               <Close />
             </IconButton>
             <Title

src/settings/Language.tsx

@@ -24,10 +24,10 @@ import { Title } from "../material/typography";
 import type { Template } from "@solid-primitives/i18n";
 import { useStore } from "@nanostores/solid";
 import { $settings } from "./stores";
-import { useNavigate } from "@solidjs/router";
+import { useNavigator } from "../platform/StackedRouter";
 
 const ChooseLang: Component = () => {
-  const navigate = useNavigate()
+  const { pop } = useNavigator();
   const [t] = createTranslator(
     () => import("./i18n/lang-names.json"),
     (code) =>
@@ -37,9 +37,9 @@ const ChooseLang: Component = () => {
         };
       }>,
   );
-  const settings = useStore($settings)
+  const settings = useStore($settings);
 
-  const code = () => settings().language
+  const code = () => settings().language;
 
   const unsupportedLangCodes = createMemo(() => {
     return iso639_1.getAllCodes().filter((x) => !["zh", "en"].includes(x));
@@ -48,8 +48,8 @@ const ChooseLang: Component = () => {
   const matchedLangCode = createMemo(() => autoMatchLangTag());
 
   const onCodeChange = (code?: string) => {
-    $settings.setKey("language", code)
+    $settings.setKey("language", code);
-  }
+  };
 
   return (
     <Scaffold
@@ -59,7 +59,7 @@ const ChooseLang: Component = () => {
             variant="dense"
             sx={{ paddingTop: "var(--safe-area-inset-top, 0px)" }}
           >
-            <IconButton color="inherit" onClick={[navigate, -1]} disableRipple>
+            <IconButton color="inherit" onClick={[pop, 1]} disableRipple>
               <ArrowBack />
             </IconButton>
             <Title>{t("Choose Language")}</Title>
@@ -96,7 +96,10 @@ const ChooseLang: Component = () => {
                 <ListItemText>{t(`lang.${c}`)}</ListItemText>
                 <ListItemSecondaryAction>
                   <Radio
-                    checked={code() === c || (code() === undefined && matchedLangCode() == c)}
+                    checked={
+                      code() === c ||
+                      (code() === undefined && matchedLangCode() == c)
+                    }
                   />
                 </ListItemSecondaryAction>
               </ListItemButton>

src/settings/Motions.tsx

@@ -13,14 +13,14 @@ import {
   Toolbar,
 } from "@suid/material";
 import { Title } from "../material/typography";
-import { useNavigate } from "@solidjs/router";
 import { ArrowBack } from "@suid/icons-material";
 import { createTranslator } from "../platform/i18n";
 import { useStore } from "@nanostores/solid";
 import { $settings } from "./stores";
+import { useNavigator } from "../platform/StackedRouter";
 
 const Motions: Component = () => {
-  const navigate = useNavigate();
+  const {pop} = useNavigator();
   const [t] = createTranslator(
     (code) =>
       import(`./i18n/${code}.json`) as Promise<{
@@ -36,7 +36,7 @@ const Motions: Component = () => {
             variant="dense"
             sx={{ paddingTop: "var(--safe-area-inset-top, 0px)" }}
           >
-            <IconButton color="inherit" onClick={[navigate, -1]} disableRipple>
+            <IconButton color="inherit" onClick={[pop, 1]} disableRipple>
               <ArrowBack />
             </IconButton>
             <Title>{t("motions")}</Title>

src/settings/Region.tsx

@@ -20,12 +20,12 @@ import {
 } from "../platform/i18n";
 import { Title } from "../material/typography";
 import type { Template } from "@solid-primitives/i18n";
-import { useNavigate } from "@solidjs/router";
 import { $settings } from "./stores";
 import { useStore } from "@nanostores/solid";
+import { useNavigator } from "../platform/StackedRouter";
 
 const ChooseRegion: Component = () => {
-  const navigate = useNavigate();
+  const {pop} = useNavigator();
   const [t] = createTranslator(
     () => import("./i18n/lang-names.json"),
     (code) =>
@@ -54,7 +54,7 @@ const ChooseRegion: Component = () => {
             variant="dense"
             sx={{ paddingTop: "var(--safe-area-inset-top, 0px)" }}
           >
-            <IconButton color="inherit" onClick={[navigate, -1]} disableRipple>
+            <IconButton color="inherit" onClick={[pop, 1]} disableRipple>
               <ArrowBack />
             </IconButton>
             <Title>{t("Choose Region")}</Title>

src/settings/Settings.tsx

@@ -30,7 +30,7 @@ import {
   Refresh as RefreshIcon,
   Translate as TranslateIcon,
 } from "@suid/icons-material";
-import { A, useNavigate } from "@solidjs/router";
+import A from "../platform/A.js";
 import { Title } from "../material/typography.jsx";
 import { css } from "solid-styled";
 import { signOut, type Account } from "../accounts/stores.js";
@@ -47,6 +47,7 @@ import { type Template } from "@solid-primitives/i18n";
 import BottomSheet from "../material/BottomSheet.jsx";
 import { useServiceWorker } from "../platform/host.js";
 import { useSessions } from "../masto/clients.js";
+import { useNavigator } from "../platform/StackedRouter.jsx";
 
 type Inset = {
   top?: number;
@@ -170,7 +171,7 @@ const Settings: ParentComponent = (props) => {
       }>,
     () => import(`./i18n/lang-names.json`),
   );
-  const navigate = useNavigate();
+  const {pop} = useNavigator();
   const settings$ = useStore($settings);
   const { needRefresh, offlineReady } = useServiceWorker();
   const dateFnLocale = useDateFnLocale();
@@ -200,7 +201,7 @@ const Settings: ParentComponent = (props) => {
             variant="dense"
             sx={{ paddingTop: "var(--safe-area-inset-top, 0px)" }}
           >
-            <IconButton color="inherit" onClick={[navigate, -1]} disableRipple>
+            <IconButton color="inherit" onClick={[pop, 11]} disableRipple>
               <CloseIcon />
             </IconButton>
             <Title>{t("Settings")}</Title>
@@ -208,7 +209,7 @@ const Settings: ParentComponent = (props) => {
         </AppBar>
       }
     >
-      <BottomSheet open={!!subpage()} onClose={() => navigate(-1)}>
+      <BottomSheet open={!!subpage()} onClose={() => pop(1)}>
         {subpage()}
       </BottomSheet>
 

src/timelines/Home.tsx

@@ -29,11 +29,11 @@ import BottomSheet, {
 import { $settings } from "../settings/stores";
 import { useStore } from "@nanostores/solid";
 import { HeroSourceProvider, type HeroSource } from "../platform/anim";
-import { useNavigate } from "@solidjs/router";
 import { setCache as setTootBottomSheetCache } from "./TootBottomSheet";
 import TrendTimelinePanel from "./TrendTimelinePanel";
 import TimelinePanel from "./TimelinePanel";
 import { useSessions } from "../masto/clients";
+import { useNavigator } from "../platform/StackedRouter";
 
 const Home: ParentComponent = (props) => {
   let panelList: HTMLDivElement;
@@ -53,7 +53,7 @@ const Home: ParentComponent = (props) => {
     const all = profiles();
     return all?.[0]?.client;
   };
-  const navigate = useNavigate();
+  const {pop, push} = useNavigator();
 
   const [heroSrc, setHeroSrc] = createSignal<HeroSource>({});
   const [panelOffset, setPanelOffset] = createSignal(0);
@@ -151,7 +151,7 @@ const Home: ParentComponent = (props) => {
     );
     const acct = `${inf.username}@${p.account.site}`;
     setTootBottomSheetCache(acct, toot);
-    navigate(`/${encodeURIComponent(acct)}/toot/${toot.id}`, {
+    push(`/${encodeURIComponent(acct)}/toot/${toot.id}`, {
       state: reply
         ? {
             tootReply: true,
@@ -276,7 +276,7 @@ const Home: ParentComponent = (props) => {
             </Show>
           </TimeSourceProvider>
           <Suspense>
-            <BottomSheet open={!!child()} onClose={() => navigate(-1)}>
+            <BottomSheet open={!!child()} onClose={() => pop(1)}>
               {child()}
             </BottomSheet>
           </Suspense>

src/timelines/ProfileMenuButton.tsx

@@ -21,7 +21,7 @@ import {
   Star as LikeIcon,
   FeaturedPlayList as ListIcon,
 } from "@suid/icons-material";
-import { A } from "@solidjs/router";
+import A from "../platform/A";
 
 const ProfileMenuButton: ParentComponent<{
   profile?: {

src/timelines/TootBottomSheet.css

@@ -1,12 +1,11 @@
 .TootBottomSheet {
   overflow: hidden;
-  height: calc(100% - var(--scaffold-topbar-height, 0px));
 
   .Scrollable {
     padding-bottom: var(--safe-area-inset-bottom, 0);
     overflow-y: auto;
     overscroll-behavior-y: contain;
-    height: 100%;
+    height: calc(100% - var(--scaffold-topbar-height, 0px));
   }
 
   .progress-line {

src/timelines/TootBottomSheet.tsx

@@ -1,10 +1,9 @@
-import { useLocation, useNavigate, useParams } from "@solidjs/router";
+import { useLocation, useParams } from "@solidjs/router";
 import {
   catchError,
   createEffect,
   createRenderEffect,
   createResource,
-  createSignal,
   Show,
   type Component,
 } from "solid-js";
@@ -25,6 +24,8 @@ import { useDocumentTitle } from "../utils";
 import { createTimelineControlsForArray } from "../masto/timelines";
 import TootList from "./TootList";
 import "./TootBottomSheet.css";
+import { useNavigator } from "../platform/StackedRouter";
+import BackButton from "../platform/BackButton";
 
 let cachedEntry: [string, mastodon.v1.Status] | undefined;
 
@@ -43,7 +44,7 @@ const TootBottomSheet: Component = (props) => {
   const location = useLocation<{
     tootReply?: boolean;
   }>();
-  const navigate = useNavigate();
+  const { pop, push } = useNavigator();
   const time = createTimeSource();
   const acctText = () => decodeURIComponent(params.acct);
   const session = useSessionForAcctStr(acctText);
@@ -186,7 +187,7 @@ const TootBottomSheet: Component = (props) => {
           target.dataset.client || `@${new URL(target.href).origin}`,
         );
 
-        navigate(`/${acct}/profile/${target.dataset.acctId}`);
+        push(`/${acct}/profile/${target.dataset.acctId}`);
 
         return;
       } else {
@@ -228,9 +229,7 @@ const TootBottomSheet: Component = (props) => {
             variant="dense"
             sx={{ paddingTop: "var(--safe-area-inset-top, 0px)" }}
           >
-            <IconButton color="inherit" onClick={[navigate, -1]} disableRipple>
+            <BackButton color="inherit" />
-              <CloseIcon />
-            </IconButton>
             <Title component="div" class="name" use:solid-styled>
               <span
                 ref={(e: HTMLElement) =>
@@ -246,9 +245,7 @@ const TootBottomSheet: Component = (props) => {
       }
       class="TootBottomSheet"
     >
-      <div
+      <div class="Scrollable">
-        class="Scrollable"
-      >
         <TimeSourceProvider value={time}>
           <TootList
             threads={ancestors.list}
@@ -288,9 +285,7 @@ const TootBottomSheet: Component = (props) => {
           </Show>
 
           <Show when={tootContextErrorUncaught.loading}>
-            <div
+            <div class="progress-line">
-              class="progress-line"
-            >
               <CircularProgress style="width: 1.5em; height: 1.5em;" />
             </div>
           </Show>

src/timelines/TootList.tsx

@@ -20,6 +20,7 @@ import RegularToot, {
 } from "./RegularToot";
 import cardStyle from "../material/cards.module.css";
 import type { ThreadNode } from "../masto/timelines";
+import { useNavigator } from "../platform/StackedRouter";
 
 function positionTootInThread(index: number, threadLength: number) {
   if (index === 0) {
@@ -40,7 +41,7 @@ const TootList: Component<{
   const session = useDefaultSession();
   const heroSrc = useHeroSource();
   const [expandedThreadId, setExpandedThreadId] = createSignal<string>();
-  const navigate = useNavigate();
+  const {push} = useNavigator();
 
   const onBookmark = async (status: mastodon.v1.Status) => {
     const client = session()?.client;
@@ -115,7 +116,7 @@ const TootList: Component<{
 
     const acct = `${inf.username}@${p.site}`;
     setTootBottomSheetCache(acct, toot);
-    navigate(`/${encodeURIComponent(acct)}/toot/${toot.id}`, {
+    push(`/${encodeURIComponent(acct)}/toot/${toot.id}`, {
       state: reply
         ? {
             tootReply: true,
@@ -146,7 +147,7 @@ const TootList: Component<{
           target.dataset.client || `@${new URL(target.href).origin}`,
         );
 
-        navigate(`/${acct}/profile/${target.dataset.acctId}`);
+        push(`/${acct}/profile/${target.dataset.acctId}`);
 
         return;
       } else {