設定画面 (#34) (#397)

Reviewed-on: #397
Co-authored-by: miteruzo <miteruzo@naver.com>
Co-committed-by: miteruzo <miteruzo@naver.com>

frontend/src/pages/posts/PostDetailPage.tsx

@@ -15,6 +15,7 @@ import { SITE_TITLE } from '@/config'
 import { isApiError } from '@/lib/api'
 import { fetchPost, toggleViewedFlg } from '@/lib/posts'
 import { postsKeys, tagsKeys } from '@/lib/queryKeys'
+import { useClientBehaviourSettings } from '@/lib/useClientBehaviourSettings'
 import { canEditContent } from '@/lib/users'
 import { cn } from '@/lib/utils'
 import NotFound from '@/pages/NotFound'
@@ -29,7 +30,17 @@ type Props = { user: User | null }
 
 const PostDetailPage: FC<Props> = ({ user }) => {
   const editable = canEditContent (user)
+  const behaviourSettings = useClientBehaviourSettings ()
+  const thumbnailMode = behaviourSettings.thumbnailMode ?? 'normal'
+  const animationMode = behaviourSettings.animation ?? 'normal'
   const { id } = useParams ()
+  const heroLayoutId = animationMode === 'off' ? undefined : `page-${ id }`
+  const heroTransition =
+      animationMode === 'off'
+      ? { duration: 0 }
+      : animationMode === 'reduced'
+	? { duration: .08, ease: 'linear' as const }
+	: { duration: .2, ease: 'easeOut' as const }
   const postId = String (id ?? '')
   const postKey = postsKeys.show (postId)
 
@@ -134,17 +145,19 @@ const PostDetailPage: FC<Props> = ({ user }) => {
 		      </div>)
 		})}
 
-		{(post.thumbnail || post.thumbnailBase) && (
+		{thumbnailMode !== 'off' && (post.thumbnail || post.thumbnailBase) && (
 		    <motion.div
-			layoutId={`page-${ id }`}
+			layoutId={heroLayoutId}
 			className="absolute top-4 left-4 w-[min(640px,calc(100vw-2rem))] h-[360px]
 				   overflow-hidden rounded-xl pointer-events-none z-50"
 			initial={{ opacity: 1 }}
 			animate={{ opacity: 0 }}
-			transition={{ duration: .2, ease: 'easeOut' }}>
+			transition={heroTransition}>
 		      <img src={post.thumbnail || post.thumbnailBase || undefined}
 			   alt={post.title || post.url}
 			   title={post.title || post.url || undefined}
+			   loading={thumbnailMode === 'light' ? 'lazy' : 'eager'}
+			   decoding="async"
 			   className="object-cover w-full h-full"/>
 		    </motion.div>)}
 

frontend/src/pages/posts/PostHistoryPage.tsx

@@ -12,9 +12,12 @@ import { useDialogue } from '@/components/dialogues/DialogueProvider'
 import MainArea from '@/components/layout/MainArea'
 import { toast } from '@/components/ui/use-toast'
 import { SITE_TITLE } from '@/config'
+import { clientAnimationTransition,
+	 clientScrollBehaviour } from '@/lib/clientAnimation'
 import { fetchPostChanges, updatePost } from '@/lib/posts'
 import { postsKeys, tagsKeys } from '@/lib/queryKeys'
 import { fetchTag } from '@/lib/tags'
+import { useClientBehaviourSettings } from '@/lib/useClientBehaviourSettings'
 import { cn, dateString, originalCreatedAtString } from '@/lib/utils'
 
 import type { FC, MouseEvent } from 'react'
@@ -37,6 +40,12 @@ const renderDiff = (diff: { current: string | null; prev: string | null }) => (
 
 const PostHistoryPage: FC = () => {
   const dialogue = useDialogue ()
+  const behaviourSettings = useClientBehaviourSettings ()
+  const animationMode = behaviourSettings.animation ?? 'normal'
+  const layoutTransition = clientAnimationTransition (
+      animationMode,
+      { normal: { duration: .2, ease: 'easeOut' as const } },
+  )
 
   const location = useLocation ()
   const query = new URLSearchParams (location.search)
@@ -113,8 +122,9 @@ const PostHistoryPage: FC = () => {
   }
 
   useEffect (() => {
-    document.querySelector ('table')?.scrollIntoView ({ behavior: 'smooth' })
-  }, [location.search])
+    document.querySelector ('table')?.scrollIntoView ({
+	behavior: clientScrollBehaviour (animationMode) })
+  }, [animationMode, location.search])
 
   const layoutIds: string[] = []
 
@@ -198,8 +208,8 @@ const PostHistoryPage: FC = () => {
 				    rowSpan={rowsCnt}>
 				  <PrefetchLink to={`/posts/${ change.postId }`}>
 				    <motion.div
-					layoutId={layoutId}
-					transition={{ layout: { duration: .2, ease: 'easeOut' } }}>
+					layoutId={animationMode === 'off' ? undefined : layoutId}
+					transition={{ layout: layoutTransition }}>
 				      <img src={change.thumbnail.current
 						|| change.thumbnailBase.current
 						|| undefined}

frontend/src/pages/posts/PostListPage.test.tsx

@@ -1,9 +1,10 @@
 import { fireEvent, screen, waitFor } from '@testing-library/react'
-import { describe, expect, it, vi } from 'vitest'
+import { beforeEach, describe, expect, it, vi } from 'vitest'
 
 import PostListPage from '@/pages/posts/PostListPage'
 import { buildPost, buildTag, buildWikiPage } from '@/test/factories'
 import { renderWithProviders } from '@/test/render'
+import { CLIENT_SETTINGS_STORAGE_KEY } from '@/lib/settings'
 
 const postsApi = vi.hoisted (() => ({
   fetchPosts: vi.fn (),
@@ -18,6 +19,11 @@ vi.mock ('@/lib/posts', () => postsApi)
 vi.mock ('@/lib/wiki', () => wikiApi)
 
 describe ('PostListPage', () => {
+  beforeEach (() => {
+    localStorage.clear ()
+    vi.clearAllMocks ()
+  })
+
   it ('loads posts from the current query and renders the plaza tab', async () => {
     const tag = buildTag ({ name: '虹夏' })
     postsApi.fetchPosts.mockResolvedValueOnce ({
@@ -36,6 +42,7 @@ describe ('PostListPage', () => {
             match: 'all',
             page:  2,
             limit: 20,
+            order: 'original_created_at:desc',
           }),
       )
     })
@@ -71,4 +78,36 @@ describe ('PostListPage', () => {
         '/wiki/%E8%99%B9%E5%A4%8F',
     )
   })
+
+  it ('uses stored list limit but keeps the fixed plaza order', async () => {
+    localStorage.setItem (
+        CLIENT_SETTINGS_STORAGE_KEY,
+        JSON.stringify ({ lists: { postList: { limit: 50, order: 'title:asc' } } }))
+    postsApi.fetchPosts.mockResolvedValueOnce ({ posts: [], count: 0 })
+
+    renderWithProviders (<PostListPage/>, { route: '/posts' })
+
+    await waitFor (() => {
+      expect (postsApi.fetchPosts).toHaveBeenCalledWith (
+          expect.objectContaining ({
+            limit: 50,
+            order: 'original_created_at:desc',
+          }),
+      )
+    })
+  })
+
+  it ('updates the limit from the tab right addon and resets to page 1', async () => {
+    postsApi.fetchPosts.mockResolvedValue ({ posts: [], count: 0 })
+
+    renderWithProviders (<PostListPage/>, { route: '/posts?page=3' })
+
+    fireEvent.change (await screen.findByLabelText ('件数'), { target: { value: '100' } })
+
+    await waitFor (() => {
+      expect (postsApi.fetchPosts).toHaveBeenLastCalledWith (
+          expect.objectContaining ({ page: 1, limit: 100 }),
+      )
+    })
+  })
 })

frontend/src/pages/posts/PostListPage.tsx

@@ -1,7 +1,7 @@
 import { useQuery } from '@tanstack/react-query'
-import { useLayoutEffect, useMemo, useRef, useState } from 'react'
+import { useEffect, useLayoutEffect, useMemo, useRef, useState } from 'react'
 import { Helmet } from 'react-helmet-async'
-import { useLocation } from 'react-router-dom'
+import { useLocation, useNavigate } from 'react-router-dom'
 
 import PostList from '@/components/PostList'
 import PrefetchLink from '@/components/PrefetchLink'
@@ -13,12 +13,24 @@ import MainArea from '@/components/layout/MainArea'
 import { SITE_TITLE } from '@/config'
 import { fetchPosts } from '@/lib/posts'
 import { postsKeys } from '@/lib/queryKeys'
+import {
+    DEFAULT_POST_LIST_LIMIT,
+    getClientListLimit,
+    LIST_LIMIT_OPTIONS,
+    setClientListSettings,
+} from '@/lib/settings'
+import { useKeyboardShortcuts } from '@/lib/useKeyboardShortcuts'
 import { fetchWikiPageByTitle } from '@/lib/wiki'
 
 import type { FC } from 'react'
 
 import type { WikiPage } from '@/types'
 
+const parseLimit = (value: string | null): 20 | 50 | 100 | null => {
+  const n = Number (value)
+  return n === 20 || n === 50 || n === 100 ? n : null
+}
+
 
 const PostListPage: FC = () => {
   const containerRef = useRef<HTMLDivElement | null> (null)
@@ -26,6 +38,7 @@ const PostListPage: FC = () => {
   const [wikiPage, setWikiPage] = useState<WikiPage | null> (null)
 
   const location = useLocation ()
+  const navigate = useNavigate ()
   const query = new URLSearchParams (location.search)
   const tagsQuery = query.get ('tags') ?? ''
   const anyFlg = query.get ('match') === 'any'
@@ -33,13 +46,18 @@ const PostListPage: FC = () => {
   const tags = useMemo (() => tagsQuery.split (' ').filter (e => e !== ''), [tagsQuery])
   const tagsKey = tags.join (' ')
   const page = Number (query.get ('page') ?? 1)
-  const limit = Number (query.get ('limit') ?? 20)
+  const limit = (
+      parseLimit (query.get ('limit'))
+      ?? getClientListLimit ('postList')
+      ?? DEFAULT_POST_LIST_LIMIT
+  )
+  const order = 'original_created_at:desc' as const
 
   const keys = {
       tags: tagsKey, match, page, limit,
       url: '', title: '', originalCreatedFrom: '', originalCreatedTo: '',
       createdFrom: '', createdTo: '', updatedFrom: '', updatedTo: '',
-      order: 'original_created_at:desc' } as const
+      order } as const
   const { data, isLoading: loading } = useQuery ({
       queryKey: postsKeys.index (keys),
       queryFn:  () => fetchPosts (keys) })
@@ -47,6 +65,40 @@ const PostListPage: FC = () => {
   const cursor = ''
   const totalPages = data ? Math.ceil (data.count / limit) : 0
 
+  useEffect (() => {
+    setClientListSettings ('postList', { limit })
+  }, [limit])
+
+  const updatePage = (nextPage: number) => {
+    const params = new URLSearchParams (location.search)
+    params.set ('page', String (Math.max (1, nextPage)))
+    navigate (`${ location.pathname }?${ params.toString () }`)
+  }
+
+  const updateListQuery = (next: { limit?: 20 | 50 | 100 }) => {
+    const params = new URLSearchParams (location.search)
+    params.set ('limit', String (next.limit ?? limit))
+    params.set ('page', '1')
+    navigate (`${ location.pathname }?${ params.toString () }`)
+  }
+
+  useKeyboardShortcuts (useMemo (() => ({
+      ...(page > 1
+	  ? {
+	      'pagination.previous': () => {
+		  updatePage (page - 1)
+	      },
+	  }
+	  : { }),
+      ...(totalPages > 0 && page < totalPages
+	  ? {
+	      'pagination.next': () => {
+		  updatePage (Math.min (page + 1, totalPages))
+	      },
+	  }
+	  : { }),
+  }), [page, totalPages, location.search]))
+
   useLayoutEffect (() => {
     scroll (0, 0)
 
@@ -90,7 +142,24 @@ const PostListPage: FC = () => {
 	}}/>
 
 	<MainArea>
-	  <TabGroup>
+	  <TabGroup
+	      rightAddon={
+		  <label className="flex items-center gap-2 text-xs text-muted-foreground">
+		    <span>件数</span>
+		    <select
+			className="rounded border border-border bg-background px-2 py-1 text-sm
+				   text-foreground"
+			value={limit}
+			onChange={ev => updateListQuery ({
+			    limit: Number (ev.target.value) as 20 | 50 | 100,
+			})}>
+		      {LIST_LIMIT_OPTIONS.map (value => (
+			  <option key={value} value={value}>
+			    {value}
+			  </option>))}
+		    </select>
+		  </label>
+	      }>
 	    <Tab name="広場">
 	      {posts.length > 0
 	       ? (

frontend/src/pages/posts/PostNewPage.test.tsx

@@ -30,16 +30,12 @@ describe ('PostNewPage', () => {
     expect (screen.getByText ('403')).toBeInTheDocument ()
   })
 
-  it ('submits a new post with manual title and thumbnail settings', async () => {
+  it ('submits a new post with manual title and thumbnail fetch UI', async () => {
     api.apiPost.mockResolvedValueOnce ({})
     api.apiGet.mockResolvedValue ([])
 
     renderWithProviders (<PostNewPage user={buildUser ({ role: 'member' })}/>)
 
-    const checkboxes = screen.getAllByRole ('checkbox', { name: '自動' })
-    fireEvent.click (checkboxes[0])
-    fireEvent.click (checkboxes[1])
-
     const textboxes = screen.getAllByRole ('textbox')
     fireEvent.change (textboxes[0], { target: { value: 'https://example.com/post' } })
     fireEvent.change (textboxes[1], { target: { value: '投稿タイトル' } })
@@ -97,10 +93,6 @@ describe ('PostNewPage', () => {
 
     renderWithProviders (<PostNewPage user={buildUser ({ role: 'member' })}/>)
 
-    const checkboxes = screen.getAllByRole ('checkbox', { name: '自動' })
-    fireEvent.click (checkboxes[0])
-    fireEvent.click (checkboxes[1])
-
     const textboxes = screen.getAllByRole ('textbox')
     fireEvent.change (textboxes[0], { target: { value: 'https://example.com/post' } })
     fireEvent.change (textboxes[1], { target: { value: '投稿タイトル' } })

frontend/src/pages/posts/PostNewPage.tsx

@@ -41,16 +41,13 @@ const PostNewPage: FC<Props> = ({ user }) => {
   const [parentPostIds, setParentPostIds] = useState ('')
   const [tags, setTags] = useState ('')
   const [duration, setDuration] = useState ('')
-  const [thumbnailAutoFlg, setThumbnailAutoFlg] = useState (true)
   const [thumbnailFile, setThumbnailFile] = useState<File | null> (null)
   const [thumbnailLoading, setThumbnailLoading] = useState (false)
   const [thumbnailPreview, setThumbnailPreview] = useState<string> ('')
   const [title, setTitle] = useState ('')
-  const [titleAutoFlg, setTitleAutoFlg] = useState (true)
   const [titleLoading, setTitleLoading] = useState (false)
   const [url, setURL] = useState ('')
 
-  const previousURLRef = useRef ('')
   const thumbnailPreviewRef = useRef ('')
   const videoFlg =
       useMemo (() => tags.split (/\s+/).some (tag => tag.replace (/\[.*\]$/, '') === '動画'),
@@ -86,23 +83,17 @@ const PostNewPage: FC<Props> = ({ user }) => {
     }
   }
 
-  const handleURLBlur = () => {
-    if (!(url) || url === previousURLRef.current)
-      return
-
-    if (titleAutoFlg)
-      fetchTitle ()
-    if (thumbnailAutoFlg)
-      fetchThumbnail ()
-    previousURLRef.current = url
-  }
-
   const fetchTitle = useCallback (async () => {
-    setTitle ('')
     setTitleLoading (true)
-    const data = await apiGet<{ title: string }> ('/preview/title', { params: { url } })
-    setTitle (data.title || '')
-    setTitleLoading (false)
+    try
+    {
+      const data = await apiGet<{ title: string }> ('/preview/title', { params: { url } })
+      setTitle (data.title || '')
+    }
+    finally
+    {
+      setTitleLoading (false)
+    }
   }, [url])
 
   const fetchThumbnail = useCallback (async () => {
@@ -111,30 +102,26 @@ const PostNewPage: FC<Props> = ({ user }) => {
     setThumbnailLoading (true)
     if (thumbnailPreviewRef.current)
       URL.revokeObjectURL (thumbnailPreviewRef.current)
-    const data = await apiGet<Blob> ('/preview/thumbnail',
-				     { params: { url }, responseType: 'blob' })
-    const imageURL = URL.createObjectURL (data)
-    setThumbnailPreview (imageURL)
-    setThumbnailFile (new File ([data],
-				'thumbnail.png',
-				{ type: data.type || 'image/png' }))
-    setThumbnailLoading (false)
+    try
+    {
+      const data = await apiGet<Blob> ('/preview/thumbnail',
+				       { params: { url }, responseType: 'blob' })
+      const imageURL = URL.createObjectURL (data)
+      setThumbnailPreview (imageURL)
+      setThumbnailFile (new File ([data],
+				  'thumbnail.png',
+				  { type: data.type || 'image/png' }))
+    }
+    finally
+    {
+      setThumbnailLoading (false)
+    }
   }, [url])
 
   useEffect (() => {
     thumbnailPreviewRef.current = thumbnailPreview
   }, [thumbnailPreview])
 
-  useEffect (() => {
-    if (titleAutoFlg && url)
-      fetchTitle ()
-  }, [fetchTitle, titleAutoFlg, url])
-
-  useEffect (() => {
-    if (thumbnailAutoFlg && url)
-      fetchThumbnail ()
-  }, [fetchThumbnail, thumbnailAutoFlg, url])
-
   if (!(editable))
     return <Forbidden/>
 
@@ -156,59 +143,62 @@ const PostNewPage: FC<Props> = ({ user }) => {
 		       onChange={e => setURL (e.target.value)}
 		       aria-describedby={describedBy}
 		       aria-invalid={invalid}
-		       className={inputClass (invalid)}
-		       onBlur={handleURLBlur}/>)}
+		       className={inputClass (invalid)}/>)}
 	  </FormField>
 
 	  {/* タイトル */}
-	  <FormField
-	      checkBox={{
-		  label:    '自動',
-		  checked:  titleAutoFlg,
-		  onChange: ev => setTitleAutoFlg (ev.target.checked)}}
-	      label="タイトル"
-	      messages={fieldErrors.title}>
+	  <FormField label="タイトル" messages={fieldErrors.title}>
 	    {({ describedBy, invalid }) => (
-		<input type="text"
-		       aria-describedby={describedBy}
-		       aria-invalid={invalid}
-		       className={inputClass (invalid)}
-		       value={title}
-		       placeholder={titleLoading ? 'Loading...' : ''}
-		       onChange={ev => setTitle (ev.target.value)}
-		       disabled={titleAutoFlg}/>)}
+		<div className="space-y-2">
+		  <input type="text"
+			 aria-describedby={describedBy}
+			 aria-invalid={invalid}
+			 className={inputClass (invalid)}
+			 value={title}
+			 placeholder={titleLoading ? 'Loading...' : ''}
+			 onChange={ev => setTitle (ev.target.value)}
+			 disabled={titleLoading}/>
+		  <div className="flex flex-wrap items-center gap-2 text-sm">
+		    <span>必要なタイミングで URL から取得できます．</span>
+		    <Button
+			type="button"
+			variant="outline"
+			onClick={() => void fetchTitle ()}
+			disabled={!(url) || titleLoading}>
+		      取得
+		    </Button>
+		  </div>
+		</div>)}
 	  </FormField>
 
 	  {/* サムネール */}
-	  <FormField
-	      checkBox={{
-		  label:    '自動',
-		  checked:  thumbnailAutoFlg,
-		  onChange: ev => setThumbnailAutoFlg (ev.target.checked)}}
-	      label="サムネール"
-	      messages={fieldErrors.thumbnail}>
+	  <FormField label="サムネール" messages={fieldErrors.thumbnail}>
 	    {({ describedBy, invalid }) => (
 		<>
-		  {thumbnailAutoFlg
-		   ? (thumbnailLoading
-		      ? <p className="text-gray-500 text-sm">Loading...</p>
-		      : !(thumbnailPreview) && (
-			  <p className="text-gray-500 text-sm">
-			    URL から自動取得されます。
-			  </p>))
-		   : (
-		      <input type="file"
-			     accept="image/*"
-			     aria-describedby={describedBy}
-			     aria-invalid={invalid}
-			     onChange={e => {
-			       const file = e.target.files?.[0]
-			       if (file)
-				 {
-				   setThumbnailFile (file)
-				   setThumbnailPreview (URL.createObjectURL (file))
-				 }
-			     }}/>)}
+		  <div className="mb-2 flex flex-wrap items-center gap-2 text-sm">
+		    <span>必要なタイミングで URL から取得できます．</span>
+		    <Button
+			type="button"
+			variant="outline"
+			onClick={() => void fetchThumbnail ()}
+			disabled={!(url) || thumbnailLoading}>
+		      取得
+		    </Button>
+		  </div>
+		  {thumbnailLoading && (
+		      <p className="text-gray-500 text-sm">Loading...</p>)}
+		  <input type="file"
+			 accept="image/*"
+			 aria-describedby={describedBy}
+			 aria-invalid={invalid}
+			 onChange={e => {
+			   const file = e.target.files?.[0]
+			   if (file)
+			     {
+			       setThumbnailFile (file)
+			       setThumbnailPreview (URL.createObjectURL (file))
+			     }
+			 }}/>
 		  {thumbnailPreview && (
 		      <img src={thumbnailPreview}
 			   alt="preview"

frontend/src/pages/posts/PostSearchPage.test.tsx

@@ -4,6 +4,7 @@ import { beforeEach, describe, expect, it, vi } from 'vitest'
 import PostSearchPage from '@/pages/posts/PostSearchPage'
 import { buildPost, buildTag } from '@/test/factories'
 import { renderWithProviders } from '@/test/render'
+import { CLIENT_SETTINGS_STORAGE_KEY } from '@/lib/settings'
 
 const postsApi = vi.hoisted (() => ({
   fetchPosts: vi.fn (),
@@ -18,6 +19,7 @@ vi.mock ('@/lib/api', () => api)
 
 describe ('PostSearchPage', () => {
   beforeEach (() => {
+    localStorage.clear ()
     vi.clearAllMocks ()
     api.apiGet.mockResolvedValue ([])
   })
@@ -40,6 +42,7 @@ describe ('PostSearchPage', () => {
             tags:  'x',
             match: 'any',
             page:  2,
+            limit: 20,
           }),
       )
     })
@@ -81,4 +84,41 @@ describe ('PostSearchPage', () => {
 
     expect (await screen.findByText ('結果ないよ（笑）')).toBeInTheDocument ()
   })
+
+  it ('uses URL limit before localStorage and stores the active list settings', async () => {
+    localStorage.setItem (
+        CLIENT_SETTINGS_STORAGE_KEY,
+        JSON.stringify ({ lists: { postSearch: { limit: 100, order: 'title:asc' } } }))
+    postsApi.fetchPosts.mockResolvedValueOnce ({ posts: [], count: 0 })
+
+    renderWithProviders (
+        <PostSearchPage/>,
+        { route: '/posts/search?limit=50&order=created_at%3Adesc' },
+    )
+
+    await waitFor (() => {
+      expect (postsApi.fetchPosts).toHaveBeenCalledWith (
+          expect.objectContaining ({ limit: 50, order: 'created_at:desc' }),
+      )
+    })
+    expect (JSON.parse (localStorage.getItem (CLIENT_SETTINGS_STORAGE_KEY) ?? '{}'))
+        .toMatchObject ({ lists: { postSearch: { limit: 50, order: 'created_at:desc' } } })
+  })
+
+  it ('moves the compact limit control outside the search form and resets page on change', async () => {
+    postsApi.fetchPosts.mockResolvedValue ({ posts: [], count: 0 })
+
+    renderWithProviders (<PostSearchPage/>, { route: '/posts/search?page=4' })
+
+    const limitSelect = await screen.findByLabelText ('件数')
+    expect (limitSelect.closest ('form')).toBeNull ()
+
+    fireEvent.change (limitSelect, { target: { value: '100' } })
+
+    await waitFor (() => {
+      expect (postsApi.fetchPosts).toHaveBeenLastCalledWith (
+          expect.objectContaining ({ page: 1, limit: 100 }),
+      )
+    })
+  })
 })

frontend/src/pages/posts/PostSearchPage.tsx

@@ -14,8 +14,20 @@ import Pagination from '@/components/common/Pagination'
 import TagInput from '@/components/common/TagInput'
 import MainArea from '@/components/layout/MainArea'
 import { SITE_TITLE } from '@/config'
+import { clientAnimationTransition,
+	 clientScrollBehaviour } from '@/lib/clientAnimation'
 import { fetchPosts } from '@/lib/posts'
 import { postsKeys } from '@/lib/queryKeys'
+import {
+    DEFAULT_POST_LIST_LIMIT,
+    DEFAULT_POST_LIST_ORDER,
+    getClientListLimit,
+    getClientListOrder,
+    LIST_LIMIT_OPTIONS,
+    setClientListSettings,
+} from '@/lib/settings'
+import { useClientBehaviourSettings } from '@/lib/useClientBehaviourSettings'
+import { useKeyboardShortcuts } from '@/lib/useKeyboardShortcuts'
 import { dateString, inputClass, originalCreatedAtString } from '@/lib/utils'
 
 import type { FC, FormEvent } from 'react'
@@ -31,8 +43,40 @@ const setIf = (qs: URLSearchParams, k: string, v: string | null) => {
     qs.set (k, t)
 }
 
+const parseLimit = (value: string | null): 20 | 50 | 100 | null => {
+  const n = Number (value)
+  return n === 20 || n === 50 || n === 100 ? n : null
+}
+
+const parseOrder = (value: string | null): FetchPostsOrder | null => {
+  switch (value)
+  {
+  case 'title:asc':
+  case 'title:desc':
+  case 'url:asc':
+  case 'url:desc':
+  case 'original_created_at:asc':
+  case 'original_created_at:desc':
+  case 'created_at:asc':
+  case 'created_at:desc':
+  case 'updated_at:asc':
+  case 'updated_at:desc':
+    return value
+
+  default:
+    return null
+  }
+}
+
 
 const PostSearchPage: FC = () => {
+  const behaviourSettings = useClientBehaviourSettings ()
+  const animationMode = behaviourSettings.animation ?? 'normal'
+  const thumbnailTransition = clientAnimationTransition (
+      animationMode,
+      { normal: { type: 'spring', stiffness: 500, damping: 40, mass: .5 },
+	reduced: { duration: .08, ease: 'linear' as const } },
+  )
   const location = useLocation ()
 
   const navigate = useNavigate ()
@@ -41,7 +85,11 @@ const PostSearchPage: FC = () => {
 			 [location.search])
 
   const page = Number (query.get ('page') ?? 1)
-  const limit = Number (query.get ('limit') ?? 20)
+  const limit = (
+      parseLimit (query.get ('limit'))
+      ?? getClientListLimit ('postSearch')
+      ?? DEFAULT_POST_LIST_LIMIT
+  )
 
   const qURL = query.get ('url') ?? ''
   const qTitle = query.get ('title') ?? ''
@@ -53,7 +101,11 @@ const PostSearchPage: FC = () => {
   const qCreatedTo = query.get ('created_to') ?? ''
   const qUpdatedFrom = query.get ('updated_from') ?? ''
   const qUpdatedTo = query.get ('updated_to') ?? ''
-  const order = (query.get ('order') || 'original_created_at:desc') as FetchPostsOrder
+  const order = (
+      parseOrder (query.get ('order'))
+      ?? getClientListOrder<FetchPostsOrder> ('postSearch')
+      ?? DEFAULT_POST_LIST_ORDER
+  )
 
   const [createdFrom, setCreatedFrom] = useState<string | null> (null)
   const [createdTo, setCreatedTo] = useState<string | null> (null)
@@ -83,6 +135,10 @@ const PostSearchPage: FC = () => {
   const results = data?.posts ?? []
   const totalPages = data ? Math.ceil (data.count / limit) : 0
 
+  useEffect (() => {
+    setClientListSettings ('postSearch', { limit, order })
+  }, [limit, order])
+
   useEffect (() => {
     setURL (qURL ?? '')
     setTitle (qTitle ?? '')
@@ -95,9 +151,11 @@ const PostSearchPage: FC = () => {
     setUpdatedFrom (qUpdatedFrom)
     setUpdatedTo (qUpdatedTo)
 
-    document.querySelector ('table')?.scrollIntoView ({ behavior: 'smooth' })
-  }, [location.search, qCreatedFrom, qCreatedTo, qMatch, qOriginalCreatedFrom,
-      qOriginalCreatedTo, qTags, qTitle, qUpdatedFrom, qUpdatedTo, qURL])
+    document.querySelector ('table')?.scrollIntoView ({
+	behavior: clientScrollBehaviour (animationMode) })
+  }, [animationMode, location.search, qCreatedFrom, qCreatedTo, qMatch,
+      qOriginalCreatedFrom, qOriginalCreatedTo, qTags, qTitle, qUpdatedFrom,
+      qUpdatedTo, qURL])
 
   const search = async () => {
     const qs = new URLSearchParams ()
@@ -113,6 +171,22 @@ const PostSearchPage: FC = () => {
     qs.set ('match', matchType)
     qs.set ('page', '1')
     qs.set ('order', order)
+    qs.set ('limit', String (limit))
+    navigate (`${ location.pathname }?${ qs.toString () }`)
+  }
+
+  const updateListQuery = (next: { limit?: 20 | 50 | 100
+				   order?: FetchPostsOrder }) => {
+    const qs = new URLSearchParams (location.search)
+    qs.set ('limit', String (next.limit ?? limit))
+    qs.set ('order', next.order ?? order)
+    qs.set ('page', '1')
+    navigate (`${ location.pathname }?${ qs.toString () }`)
+  }
+
+  const updatePage = (nextPage: number) => {
+    const qs = new URLSearchParams (location.search)
+    qs.set ('page', String (Math.max (1, nextPage)))
     navigate (`${ location.pathname }?${ qs.toString () }`)
   }
 
@@ -121,6 +195,23 @@ const PostSearchPage: FC = () => {
     search ()
   }
 
+  useKeyboardShortcuts (useMemo (() => ({
+      ...(page > 1
+	  ? {
+	      'pagination.previous': () => {
+		  updatePage (page - 1)
+	      },
+	  }
+	  : { }),
+      ...(totalPages > 0 && page < totalPages
+	  ? {
+	      'pagination.next': () => {
+		  updatePage (Math.min (page + 1, totalPages))
+	      },
+	  }
+	  : { }),
+  }), [page, totalPages, location.search]))
+
   const defaultDirection = { title: 'asc',
 			     url: 'asc',
 			     original_created_at: 'desc',
@@ -134,7 +225,24 @@ const PostSearchPage: FC = () => {
 	</Helmet>
 
 	<div className="max-w-xl">
-	  <PageTitle>広場検索</PageTitle>
+	  <div className="flex flex-wrap items-center justify-between gap-3">
+	    <PageTitle>広場検索</PageTitle>
+	    <label className="flex items-center gap-2 text-xs text-muted-foreground">
+	      <span>件数</span>
+	      <select
+		  className="rounded border border-border bg-background px-2 py-1 text-sm
+			     text-foreground"
+		  value={limit}
+		  onChange={ev => updateListQuery ({
+		      limit: Number (ev.target.value) as 20 | 50 | 100,
+		  })}>
+		{LIST_LIMIT_OPTIONS.map (value => (
+		    <option key={value} value={value}>
+		      {value}
+		    </option>))}
+	      </select>
+	    </label>
+	  </div>
 
 	  <form onSubmit={handleSearch} className="space-y-2">
 	    {/* タイトル */}
@@ -142,6 +250,7 @@ const PostSearchPage: FC = () => {
 	      {({ invalid }) => (
 		  <input
 		      type="text"
+		      data-shortcut-focus-search="true"
 		      value={title}
 		      onChange={e => setTitle (e.target.value)}
 		      className={inputClass (invalid)}/>)}
@@ -161,6 +270,7 @@ const PostSearchPage: FC = () => {
 	    <FormField label="タグ">
 	      {() => (
 		  <TagInput
+		      includeNico={true}
 		      value={tagsStr}
 		      setValue={setTagsStr}/>)}
 	    </FormField>
@@ -296,15 +406,16 @@ const PostSearchPage: FC = () => {
 		  </thead>
 		  <tbody>
 		    {results.map (row => (
-			<tr key={row.id} className="even:bg-gray-100 dark:even:bg-gray-700">
+			<tr
+			    key={row.id}
+			    className="even:bg-gray-100 dark:even:bg-gray-700">
 			  <td className="p-2">
 			    <PrefetchLink to={`/posts/${ row.id }`} title={row.title || undefined}>
 			      <motion.div
-				  layoutId={`page-${ row.id }`}
-				  transition={{ type: 'spring',
-						stiffness: 500,
-						damping: 40,
-						mass: .5 }}>
+				  layoutId={animationMode === 'off'
+				      ? undefined
+				      : `page-${ row.id }`}
+				  transition={thumbnailTransition}>
 				<img src={row.thumbnail || row.thumbnailBase || undefined}
 				     alt={row.title || row.url}
 				     title={row.title || row.url || undefined}