{Trend,}TimelinePanel: use TootList

src/masto/timelines.ts

@@ -20,52 +20,77 @@ type TimelineParamsOf<T> = T extends Timeline<infer P> ? P : never;
 export function createTimelineSnapshot<
   T extends Timeline<mastodon.DefaultPaginationParams>,
 >(timeline: Accessor<T>, limit: Accessor<number>) {
+  const lookup = new ReactiveMap<string, TreeNode<mastodon.v1.Status>>();
   const [shot, { refetch }] = createResource(
     () => [timeline(), limit()] as const,
     async ([tl, limit]) => {
       const ls = await tl.list({ limit }).next();
-      return ls.value?.map((x) => [x]) ?? [];
+      return ls.value;
     },
   );
 
-  const [snapshot, setSnapshot] = createStore([] as mastodon.v1.Status[][]);
+  const [threads, setThreads] = createStore([] as mastodon.v1.Status["id"][]);
 
   createEffect(() => {
     const nls = catchError(shot, (e) => console.error(e));
     if (!nls) return;
-    const ols = Array.from(snapshot);
-    // The algorithm below assumes the snapshot is not changing
-    for (let i = 0; i < nls.length; i++) {
-      if (i >= ols.length) {
-        setSnapshot(i, nls[i]);
-      } else {
-        if (nls[i].length !== ols[i].length) {
-          setSnapshot(i, nls[i]);
-        } else {
-          const oth = ols[i],
-            nth = nls[i];
-          for (let j = 0; j < oth.length; j++) {
-            const ost = oth[j],
-              nst = nth[j];
-            for (const key of Object.keys(
-              nst,
-            ) as unknown as (keyof mastodon.v1.Status)[]) {
-              if (ost[key] !== nst[key]) {
-                setSnapshot(i, j, key, nst[key]);
-              }
-            }
-          }
+
+    setThreads([]);
+    lookup.clear();
+
+    const existence = [] as boolean[];
+
+    for (const [idx, status] of nls.entries()) {
+      existence[idx] = !!untrack(() => lookup.get(status.id));
+      lookup.set(status.id, {
+        value: status,
+      });
+    }
+
+    for (const status of nls) {
+      const node = untrack(() => lookup.get(status.id))!;
+      if (status.inReplyToId) {
+        const parent = lookup.get(status.inReplyToId);
+        if (parent) {
+          const children = parent.children ?? [];
+          if (!children.find((x) => x.value.id == status.id)) {
+            children.push(node);
+          }
+          parent.children = children;
+          node.parent = parent;
         }
       }
     }
+
+    const newThreads = nls
+      .filter((x, i) => !existence[i])
+      .map((x) => x.id)
+      .filter((id) => (lookup.get(id)!.children?.length ?? 0) === 0);
+
+    setThreads(newThreads);
   });
 
   return [
-    snapshot,
+    {
+      list: threads,
+      get(id: string) {
+        return lookup.get(id);
+      },
+      getPath(id: string) {
+        const node = lookup.get(id);
+        if (!node) return;
+        return collectPath(node);
+      },
+      set(id: string, value: mastodon.v1.Status) {
+        const node = untrack(() => lookup.get(id));
+        if (!node) return;
+        node.value = value;
+        lookup.set(id, node);
+      },
+    },
     shot,
     {
       refetch,
-      mutate: setSnapshot,
     },
   ] as const;
 }
@@ -100,10 +125,9 @@ function collectPath<T>(node: TreeNode<T>) {
   return path;
 }
 
-function createTimelineChunk<T extends Timeline<mastodon.DefaultPaginationParams>>(
-  timeline: Accessor<T>,
-  params: Accessor<TimelineParamsOf<T>>,
-) {
+function createTimelineChunk<
+  T extends Timeline<mastodon.DefaultPaginationParams>,
+>(timeline: Accessor<T>, params: Accessor<TimelineParamsOf<T>>) {
   let vpMaxId: string | undefined, vpMinId: string | undefined;
 
   const fetchExtendingPage = async (

src/material/BottomSheet.tsx

@@ -96,6 +96,9 @@ const BottomSheet: ParentComponent<BottomSheetProps> = (props) => {
     element.showModal();
     const srcElement = hero();
     const startRect = srcElement?.getBoundingClientRect();
+    if (!startRect) {
+      console.debug("no source element")
+    }
     if (startRect) {
       srcElement!.style.visibility = "hidden";
       const endRect = element.getBoundingClientRect();

src/platform/anim.ts

@@ -18,12 +18,15 @@ const HeroSourceContext = createContext<Signal<HeroSource>>(
 
 export const HeroSourceProvider = HeroSourceContext.Provider;
 
-function useHeroSource() {
+export function useHeroSource() {
   return useContext(HeroSourceContext);
 }
 
 /**
  * Use hero value for the {@link key}.
+ *
+ * Note: the setter here won't set the value of the hero source.
+ * To set hero source, use {@link useHeroSource} and set the corresponding key.
  */
 export function useHeroSignal(
   key: string | symbol | number,
@@ -46,6 +49,7 @@ export function useHeroSignal(
 
     return [get, set];
   } else {
+    console.debug("no hero source")
     return [() => undefined, () => undefined];
   }
 }

src/timelines/Home.tsx

@@ -178,7 +178,7 @@ const Home: ParentComponent = (props) => {
       display: grid;
       grid-auto-columns: 560px;
       grid-auto-flow: column;
-      overflow-x: auto;
+      overflow: auto hidden;
       scroll-snap-type: x mandatory;
       scroll-snap-stop: always;
       height: calc(100vh - var(--scaffold-topbar-height, 0px));
@@ -232,6 +232,7 @@ const Home: ParentComponent = (props) => {
           </AppBar>
         }
       >
+        <HeroSourceProvider value={[heroSrc, setHeroSrc]}>
           <TimeSourceProvider value={now}>
             <Show when={!!client()}>
               <div class="panel-list" ref={panelList!}>
@@ -268,12 +269,11 @@ const Home: ParentComponent = (props) => {
             </Show>
           </TimeSourceProvider>
           <Suspense>
-          <HeroSourceProvider value={[heroSrc, setHeroSrc]}>
             <BottomSheet open={!!child()} onClose={() => navigate(-1)}>
               {child()}
             </BottomSheet>
-          </HeroSourceProvider>
           </Suspense>
+        </HeroSourceProvider>
       </Scaffold>
     </>
   );

src/timelines/PullDownToRefresh.tsx

@@ -1,24 +1,15 @@
 import {
   createEffect,
-  createRenderEffect,
   createSignal,
-  onCleanup,
   Show,
   untrack,
   type Component,
-  type Signal,
 } from "solid-js";
 import { css } from "solid-styled";
 import { Refresh as RefreshIcon } from "@suid/icons-material";
 import { CircularProgress } from "@suid/material";
-import {
-  createEventListener,
-  makeEventListener,
-} from "@solid-primitives/event-listener";
-import {
-  createViewportObserver,
-  createVisibilityObserver,
-} from "@solid-primitives/intersection-observer";
+import { makeEventListener } from "@solid-primitives/event-listener";
+import { createVisibilityObserver } from "@solid-primitives/intersection-observer";
 
 const PullDownToRefresh: Component<{
   loading?: boolean;
@@ -114,14 +105,13 @@ const PullDownToRefresh: Component<{
     }
   };
 
-  createEffect((cleanup?: () => void) => {
+  createEffect(() => {
     if (!rootVisible()) {
       return;
     }
-    cleanup?.();
     const element = props.linkedElement;
     if (!element) return;
-    return makeEventListener(element, "wheel", handleLinkedWheel);
+    makeEventListener(element, "wheel", handleLinkedWheel);
   });
 
   let lastTouchId: number | undefined = undefined;
@@ -165,16 +155,14 @@ const PullDownToRefresh: Component<{
     }
   };
 
-  createEffect((cleanup?: () => void) => {
+  createEffect(() => {
     if (!rootVisible()) {
       return;
     }
-    cleanup?.();
     const element = props.linkedElement;
     if (!element) return;
-    const cleanup0 = makeEventListener(element, "touchmove", handleTouch);
-    const cleanup1 = makeEventListener(element, "touchend", handleTouchEnd);
-    return () => (cleanup0(), cleanup1());
+    makeEventListener(element, "touchmove", handleTouch);
+    makeEventListener(element, "touchend", handleTouchEnd);
   });
 
   css`

src/timelines/TimelinePanel.tsx

@@ -12,10 +12,10 @@ import {
 import { type mastodon } from "masto";
 import { Button, LinearProgress } from "@suid/material";
 import { createTimeline } from "../masto/timelines";
-import { vibrate } from "../platform/hardware";
+
 import PullDownToRefresh from "./PullDownToRefresh";
 import TootComposer from "./TootComposer";
-import Thread from "./Thread.jsx";
+import TootList from "./TootList";
 
 const TimelinePanel: Component<{
   client: mastodon.rest.Client;
@@ -34,53 +34,15 @@ const TimelinePanel: Component<{
     () => props.client.v1.timelines[props.name],
     () => ({ limit: 20 }),
   );
-  const [expandedThreadId, setExpandedThreadId] = createSignal<string>();
   const [typing, setTyping] = createSignal(false);
 
   const tlEndObserver = new IntersectionObserver(() => {
     if (untrack(() => props.prefetch) && !snapshot.loading)
-      refetchTimeline("next");
+      refetchTimeline("prev");
   });
 
   onCleanup(() => tlEndObserver.disconnect());
 
-  const onBookmark = async (
-    client: mastodon.rest.Client,
-    status: mastodon.v1.Status,
-  ) => {
-    const result = await (status.bookmarked
-      ? client.v1.statuses.$select(status.id).unbookmark()
-      : client.v1.statuses.$select(status.id).bookmark());
-    timeline.set(result.id, result);
-  };
-
-  const onBoost = async (
-    client: mastodon.rest.Client,
-    status: mastodon.v1.Status,
-  ) => {
-    vibrate(50);
-    const rootStatus = status.reblog ? status.reblog : status;
-    const reblogged = rootStatus.reblogged;
-    if (status.reblog) {
-      status.reblog = { ...status.reblog, reblogged: !reblogged };
-      timeline.set(status.id, status);
-    } else {
-      timeline.set(
-        status.id,
-        Object.assign(status, {
-          reblogged: !reblogged,
-        }),
-      );
-    }
-    const result = reblogged
-      ? await client.v1.statuses.$select(status.id).unreblog()
-      : (await client.v1.statuses.$select(status.id).reblog()).reblog!;
-    timeline.set(
-      status.id,
-      Object.assign(status.reblog ?? status, result.reblog),
-    );
-  };
-
   return (
     <ErrorBoundary
       fallback={(err, reset) => {
@@ -110,36 +72,12 @@ const TimelinePanel: Component<{
             onSent={() => refetchTimeline("prev")}
           />
         </Show>
-        <For each={timeline.list}>
-          {(itemId, index) => {
-            const path = timeline.getPath(itemId)!;
-            const toots = path.reverse().map((x) => x.value);
 
-            return (
-              <Thread
-                toots={toots}
-                onBoost={onBoost}
-                onBookmark={onBookmark}
-                onReply={({ status }, element) =>
-                  props.openFullScreenToot(status, element, true)
-                }
-                client={props.client}
-                isExpended={(status) => status.id === expandedThreadId()}
-                onItemClick={(status, event) => {
-                  setTyping(false);
-                  if (status.id !== expandedThreadId()) {
-                    setExpandedThreadId((x) => (x ? undefined : status.id));
-                  } else {
-                    props.openFullScreenToot(
-                      status,
-                      event.currentTarget as HTMLElement,
-                    );
-                  }
-                }}
-              />
-            );
-          }}
-        </For>
+        <TootList
+          threads={timeline.list}
+          onUnknownThread={timeline.getPath}
+          onChangeToot={timeline.set}
+        ></TootList>
       </div>
 
       <div ref={(e) => tlEndObserver.observe(e)}></div>

src/timelines/TootList.tsx

@@ -1,24 +1,16 @@
 import {
   Component,
   For,
-  onCleanup,
   createSignal,
-  Show,
-  untrack,
-  Match,
-  Switch as JsSwitch,
   ErrorBoundary,
   type Ref,
+  createSelector,
 } from "solid-js";
 import { type mastodon } from "masto";
-import { Button, LinearProgress } from "@suid/material";
-import { createTimeline } from "../masto/timelines";
 import { vibrate } from "../platform/hardware";
-import PullDownToRefresh from "./PullDownToRefresh";
-import TootComposer from "./TootComposer";
 import Thread from "./Thread.jsx";
 import { useDefaultSession } from "../masto/clients";
-import { useHeroSignal } from "../platform/anim";
+import { useHeroSignal, useHeroSource } from "../platform/anim";
 import { HERO as BOTTOM_SHEET_HERO } from "../material/BottomSheet";
 import { setCache as setTootBottomSheetCache } from "./TootBottomSheet";
 import { useNavigate } from "@solidjs/router";
@@ -30,7 +22,7 @@ const TootList: Component<{
   onChangeToot: (id: string, value: mastodon.v1.Status) => void;
 }> = (props) => {
   const session = useDefaultSession();
-  const [, setHeroSrc] = useHeroSignal(BOTTOM_SHEET_HERO);
+  const heroSrc = useHeroSource();
   const [expandedThreadId, setExpandedThreadId] = createSignal<string>();
   const navigate = useNavigate();
 
@@ -83,7 +75,10 @@ const TootList: Component<{
       console.warn("no account info?");
       return;
     }
-    setHeroSrc(srcElement);
+    if (heroSrc) {
+      heroSrc[1]((x) => ({ ...x, [BOTTOM_SHEET_HERO]: srcElement }));
+    }
+
     const acct = `${inf.username}@${p.site}`;
     setTootBottomSheetCache(acct, toot);
     navigate(`/${encodeURIComponent(acct)}/toot/${toot.id}`, {
@@ -95,6 +90,26 @@ const TootList: Component<{
     });
   };
 
+  const onItemClick = (status: mastodon.v1.Status, event: MouseEvent) => {
+    if (status.id !== expandedThreadId()) {
+      setExpandedThreadId((x) => (x ? undefined : status.id));
+    } else {
+      openFullScreenToot(status, event.currentTarget as HTMLElement);
+    }
+  };
+
+  const checkIsExpendedId = createSelector(expandedThreadId);
+
+  const checkIsExpended = (status: mastodon.v1.Status) =>
+    checkIsExpendedId(status.id);
+
+  const onReply = (
+    { status }: { status: mastodon.v1.Status },
+    element: HTMLElement,
+  ) => {
+    openFullScreenToot(status, element, true);
+  };
+
   return (
     <ErrorBoundary
       fallback={(err, reset) => {
@@ -112,21 +127,10 @@ const TootList: Component<{
                 toots={toots}
                 onBoost={onBoost}
                 onBookmark={onBookmark}
-                onReply={({ status }, element) =>
-                  openFullScreenToot(status, element, true)
-                }
+                onReply={onReply}
                 client={session()?.client!}
-                isExpended={(status) => status.id === expandedThreadId()}
-                onItemClick={(status, event) => {
-                  if (status.id !== expandedThreadId()) {
-                    setExpandedThreadId((x) => (x ? undefined : status.id));
-                  } else {
-                    openFullScreenToot(
-                      status,
-                      event.currentTarget as HTMLElement,
-                    );
-                  }
-                }}
+                isExpended={checkIsExpended}
+                onItemClick={onItemClick}
               />
             );
           }}

src/timelines/TrendTimelinePanel.tsx

@@ -13,6 +13,7 @@ import { createTimelineSnapshot } from "../masto/timelines.js";
 import { vibrate } from "../platform/hardware.js";
 import PullDownToRefresh from "./PullDownToRefresh.jsx";
 import Thread from "./Thread.jsx";
+import TootList from "./TootList.jsx";
 
 const TrendTimelinePanel: Component<{
   client: mastodon.rest.Client;
@@ -24,67 +25,11 @@ const TrendTimelinePanel: Component<{
   ) => void;
 }> = (props) => {
   const [scrollLinked, setScrollLinked] = createSignal<HTMLElement>();
-  const [
-    timeline,
-    snapshot,
-    { refetch: refetchTimeline, mutate: mutateTimeline },
-  ] = createTimelineSnapshot(
+  const [timeline, snapshot, { refetch: refetchTimeline }] =
+    createTimelineSnapshot(
       () => props.client.v1.trends.statuses,
       () => 120,
     );
-  const [expandedId, setExpandedId] = createSignal<string>();
-
-  const isExpandedId = createSelector(expandedId);
-
-  const isExpanded = (st: mastodon.v1.Status) => isExpandedId(st.id);
-
-  const onBookmark = async (
-    index: number,
-    client: mastodon.rest.Client,
-    status: mastodon.v1.Status,
-  ) => {
-    const result = await (status.bookmarked
-      ? client.v1.statuses.$select(status.id).unbookmark()
-      : client.v1.statuses.$select(status.id).bookmark());
-    mutateTimeline((o) => {
-      o![index] = [result];
-      return o;
-    });
-  };
-
-  const onBoost = async (
-    index: number,
-    client: mastodon.rest.Client,
-    status: mastodon.v1.Status,
-  ) => {
-    const reblogged = status.reblog
-      ? status.reblog.reblogged
-      : status.reblogged;
-    vibrate(50);
-    mutateTimeline(index, (th) => {
-      const x = th[0];
-      if (x.reblog) {
-        x.reblog = { ...x.reblog, reblogged: !reblogged };
-        return [Object.assign({}, x)];
-      } else {
-        return [
-          Object.assign({}, x, {
-            reblogged: !reblogged,
-          }),
-        ];
-      }
-    });
-    const result = reblogged
-      ? await client.v1.statuses.$select(status.id).unreblog()
-      : (await client.v1.statuses.$select(status.id).reblog()).reblog!;
-    mutateTimeline(index, (th) => {
-      Object.assign(th[0].reblog ?? th[0], {
-        reblogged: result.reblogged,
-        reblogsCount: result.reblogsCount,
-      });
-      return th;
-    });
-  };
 
   return (
     <ErrorBoundary
@@ -104,31 +49,11 @@ const TrendTimelinePanel: Component<{
           }, 0)
         }
       >
-        <For each={timeline}>
-          {(item, index) => {
-            let element: HTMLElement | undefined;
-            return (
-              <Thread
-                ref={element}
-                toots={item}
-                onBoost={(...args) => onBoost(index(), ...args)}
-                onBookmark={(...args) => onBookmark(index(), ...args)}
-                onReply={({ status }, element) =>
-                  props.openFullScreenToot(status, element, true)
-                }
-                client={props.client}
-                isExpended={isExpanded}
-                onItemClick={(x) => {
-                  if (x.id !== expandedId()) {
-                    setExpandedId((o) => (o ? undefined : x.id));
-                  } else {
-                    props.openFullScreenToot(x, element);
-                  }
-                }}
+        <TootList
+          threads={timeline.list}
+          onUnknownThread={timeline.getPath}
+          onChangeToot={timeline.set}
         />
-            );
-          }}
-        </For>
       </div>
       <div
         style={{