fix #54: support multi-select polls

src/timelines/toots/TootPoll.tsx

@@ -1,6 +1,5 @@
 import {
   batch,
-  createRenderEffect,
   createSelector,
   createSignal,
   Index,
@@ -173,6 +172,7 @@ const TootPoll: Component<TootPollProps> = (props) => {
       <TootPollDialog
         open={showVoteDialog()}
         options={poll().options}
+        multiple={poll().multiple}
         onVote={[vote, props.status]}
         onClose={() => setShowVoteDialog(false)}
         initialVotes={[initialVote()]}

src/timelines/toots/TootPollDialog.tsx

@@ -9,7 +9,6 @@ import {
 import type { mastodon } from "masto";
 import {
   createEffect,
-  createRenderEffect,
   createSignal,
   Index,
   Show,
@@ -47,7 +46,10 @@ const TootPollDialog: Component<TootPollDialogPoll> = (props) => {
 
   const toggleVote = (i: number) => {
     if (props.multiple) {
-      setVotes((o) => [...o.filter((x) => x === i), i]);
+      setVotes((o) => {
+        const others = o.filter((x) => x !== i);
+        return others.length !== o.length ? others : [...others, i];
+      });
     } else {
       setVotes([i]);
     }
@@ -56,7 +58,8 @@ const TootPollDialog: Component<TootPollDialogPoll> = (props) => {
   const sendVote = async () => {
     setInProgress(true);
     try {
-      await props.onVote[0](props.onVote[1], votes());
+      const [callback, status] = props.onVote;
+      await callback(status, votes());
     } catch (reason) {
       console.error(reason);
       props.onClose?.("cancel");