#34

frontend/src/components/PrefetchLink.tsx

@@ -7,7 +7,7 @@ import { useOverlayStore } from '@/components/RouteBlockerOverlay'
 import { prefetchForURL } from '@/lib/prefetchers'
 import { cn } from '@/lib/utils'
 
-import type { AnchorHTMLAttributes, KeyboardEvent, MouseEvent, TouchEvent } from 'react'
+import type { AnchorHTMLAttributes, MouseEvent, TouchEvent } from 'react'
 import type { To } from 'react-router-dom'
 
 type Props = AnchorHTMLAttributes<HTMLAnchorElement> & {
@@ -25,7 +25,6 @@ export default forwardRef<HTMLAnchorElement, Props> (({
     state,
     onMouseEnter,
     onTouchStart,
-    onKeyDown,
     onClick,
     cancelOnError = false,
     ...rest }, ref) => {
@@ -98,22 +97,11 @@ export default forwardRef<HTMLAnchorElement, Props> (({
     }
   }
 
-  const handleKeyDown = (ev: KeyboardEvent<HTMLAnchorElement>) => {
-    onKeyDown?.(ev)
-
-    if (ev.defaultPrevented)
-      return
-
-    if (ev.key === ' ' || ev.key === 'Spacebar')
-      ev.preventDefault ()
-  }
-
   return (
       <a ref={ref}
 	 href={typeof to === 'string' ? to : createPath (to)}
 	 onMouseEnter={handleMouseEnter}
 	 onTouchStart={handleTouchStart}
-	 onKeyDown={handleKeyDown}
 	 onClick={handleClick}
 	 className={cn ('cursor-pointer', className)}
 	 {...rest}/>)

frontend/src/components/users/BehaviorSettingsSection.tsx

@@ -0,0 +1,143 @@
+import { useEffect, useMemo, useState } from 'react'
+
+import FormField from '@/components/common/FormField'
+import { Button } from '@/components/ui/button'
+import { toast } from '@/components/ui/use-toast'
+import {
+    getClientBehaviorSettings,
+    setClientBehaviorSettings,
+} from '@/lib/settings'
+import { inputClass } from '@/lib/utils'
+
+import type {
+    ClientAnimationMode,
+    ClientBehaviorSettings,
+    ClientEmbedAutoLoadMode,
+    ClientThumbnailMode,
+} from '@/lib/settings'
+import type { FC } from 'react'
+
+type Props = {
+    sectionClassName: string
+}
+
+
+const BehaviorSettingsSection: FC<Props> = ({ sectionClassName }) => {
+  const [savedSettings, setSavedSettings] =
+      useState<ClientBehaviorSettings> (() => getClientBehaviorSettings ())
+  const [draftSettings, setDraftSettings] =
+      useState<ClientBehaviorSettings> (() => getClientBehaviorSettings ())
+
+  useEffect (() => {
+    const current = getClientBehaviorSettings ()
+    setSavedSettings (current)
+    setDraftSettings (current)
+  }, [])
+
+  const hasUnsavedChanges = useMemo (
+      () => JSON.stringify (draftSettings) !== JSON.stringify (savedSettings),
+      [draftSettings, savedSettings],
+  )
+
+  const updateDraft = <Key extends keyof ClientBehaviorSettings,> (
+      key:    Key,
+      value:  ClientBehaviorSettings[Key],
+  ) => {
+    setDraftSettings (current => ({ ...current, [key]: value }))
+  }
+
+  const handleSave = () => {
+    const next = setClientBehaviorSettings (draftSettings)
+    setSavedSettings (next)
+    setDraftSettings (next)
+    toast ({ title: '動作設定を保存しました' })
+  }
+
+  const handleDiscard = () => {
+    setDraftSettings (savedSettings)
+  }
+
+  return (
+      <section className={sectionClassName}>
+	<div className="flex flex-wrap items-start justify-between gap-3">
+	  <div className="space-y-1">
+	    <h2 className="text-xl font-bold">動作</h2>
+	    <p className="text-sm text-muted-foreground">
+	      この設定は現在のブラウザに保存されます。
+	    </p>
+	    <p className="text-sm text-muted-foreground">
+	      重い端末や通信量を抑えたい場合に調整します。
+	    </p>
+	    {hasUnsavedChanges && (
+		<p className="text-sm text-amber-700 dark:text-amber-300">
+		  未保存の変更があります
+		</p>)}
+	  </div>
+
+	  <div className="flex flex-wrap gap-2">
+	    <Button
+		type="button"
+		variant="outline"
+		disabled={!(hasUnsavedChanges)}
+		onClick={handleDiscard}>
+	      変更を破棄
+	    </Button>
+	    <Button
+		type="button"
+		disabled={!(hasUnsavedChanges)}
+		onClick={handleSave}>
+	      保存
+	    </Button>
+	  </div>
+	</div>
+
+	<div className="grid gap-4 md:grid-cols-2">
+	  <FormField label="アニメーション">
+	    {() => (
+		<select
+		    className={inputClass (false)}
+		    value={draftSettings.animation ?? 'normal'}
+		    onChange={ev => updateDraft (
+			'animation',
+			ev.target.value as ClientAnimationMode,
+		    )}>
+		  <option value="normal">通常</option>
+		  <option value="reduced">控えめ</option>
+		  <option value="off">なし</option>
+		</select>)}
+	  </FormField>
+
+	  <FormField label="埋め込み自動読込">
+	    {() => (
+		<select
+		    className={inputClass (false)}
+		    value={draftSettings.embedAutoLoad ?? 'auto'}
+		    onChange={ev => updateDraft (
+			'embedAutoLoad',
+			ev.target.value as ClientEmbedAutoLoadMode,
+		    )}>
+		  <option value="auto">自動</option>
+		  <option value="manual">クリック時</option>
+		  <option value="off">読み込まない</option>
+		</select>)}
+	  </FormField>
+
+	  <FormField label="サムネイル表示">
+	    {() => (
+		<select
+		    className={inputClass (false)}
+		    value={draftSettings.thumbnailMode ?? 'normal'}
+		    onChange={ev => updateDraft (
+			'thumbnailMode',
+			ev.target.value as ClientThumbnailMode,
+		    )}>
+		  <option value="normal">通常</option>
+		  <option value="light">軽量</option>
+		  <option value="off">非表示</option>
+		</select>)}
+	  </FormField>
+	</div>
+      </section>)
+}
+
+export default BehaviorSettingsSection

frontend/src/components/users/ShortcutHelpDialog.tsx

@@ -24,14 +24,24 @@ type Props = {
     activeScope:        ShortcutScope
     effectiveBindings:  Record<ShortcutActionId, KeyBinding | null>
     conflictActionIds:  Set<ShortcutActionId>
+    availableActionIds: Set<ShortcutActionId>
 }
 
 
 const ShortcutHelpDialog: FC<Props> = (
-    { open, onOpenChange, activeScope, effectiveBindings, conflictActionIds },
+    {
+	open,
+	onOpenChange,
+	activeScope,
+	effectiveBindings,
+	conflictActionIds,
+	availableActionIds,
+    },
 ) => {
-  const rows = SHORTCUT_DEFINITIONS.filter (definition =>
-      definition.scope === 'global' || definition.scope === activeScope)
+  const rows = SHORTCUT_DEFINITIONS
+      .filter (definition =>
+	  definition.scope === 'global' || definition.scope === activeScope)
+      .filter (definition => availableActionIds.has (definition.id))
 
   return (
       <Dialog open={open} onOpenChange={onOpenChange}>