Animation Smorgasbord (#15637)

Co-authored-by: Adam <[email protected]>

4 files changed, 318 insertions, 92 deletions

diff --git a/packages/app/src/pages/session/composer/session-composer-region.tsx b/packages/app/src/pages/session/composer/session-composer-region.tsx
index cfd78ece8..9f17d3f4b 100644
--- a/packages/app/src/pages/session/composer/session-composer-region.tsx
+++ b/packages/app/src/pages/session/composer/session-composer-region.tsx
@@ -1,5 +1,6 @@
-import { Show, createEffect, createMemo } from "solid-js"
+import { Show, createEffect, createMemo, createSignal, onCleanup } from "solid-js"
 import { useParams } from "@solidjs/router"
+import { useSpring } from "@opencode-ai/ui/motion-spring"
 import { PromptInput } from "@/components/prompt-input"
 import { useLanguage } from "@/context/language"
 import { usePrompt } from "@/context/prompt"
@@ -18,6 +19,23 @@ export function SessionComposerRegion(props: {
   onSubmit: () => void
   onResponseSubmit: () => void
   setPromptDockRef: (el: HTMLDivElement) => void
+  visualDuration?: number
+  bounce?: number
+  dockOpenVisualDuration?: number
+  dockOpenBounce?: number
+  dockCloseVisualDuration?: number
+  dockCloseBounce?: number
+  drawerExpandVisualDuration?: number
+  drawerExpandBounce?: number
+  drawerCollapseVisualDuration?: number
+  drawerCollapseBounce?: number
+  subtitleDuration?: number
+  subtitleTravel?: number
+  subtitleEdge?: number
+  countDuration?: number
+  countMask?: number
+  countMaskHeight?: number
+  countWidthDuration?: number
 }) {
   const params = useParams()
   const prompt = usePrompt()
@@ -43,6 +61,40 @@ export function SessionComposerRegion(props: {
     setSessionHandoff(sessionKey(), { prompt: previewPrompt() })
   })
 
+  const open = createMemo(() => props.state.dock() && !props.state.closing())
+  const config = createMemo(() =>
+    open()
+      ? {
+          visualDuration: props.dockOpenVisualDuration ?? props.visualDuration ?? 0.3,
+          bounce: props.dockOpenBounce ?? props.bounce ?? 0,
+        }
+      : {
+          visualDuration: props.dockCloseVisualDuration ?? props.visualDuration ?? 0.3,
+          bounce: props.dockCloseBounce ?? props.bounce ?? 0,
+        },
+  )
+  const progress = useSpring(
+    () => (open() ? 1 : 0),
+    config,
+  )
+  const value = createMemo(() => Math.max(0, Math.min(1, progress())))
+  const [height, setHeight] = createSignal(320)
+  const dock = createMemo(() => props.state.dock() || value() > 0.001)
+  const full = createMemo(() => Math.max(78, height()))
+  const [contentRef, setContentRef] = createSignal<HTMLDivElement>()
+
+  createEffect(() => {
+    const el = contentRef()
+    if (!el) return
+    const update = () => {
+      setHeight(el.getBoundingClientRect().height)
+    }
+    update()
+    const observer = new ResizeObserver(update)
+    observer.observe(el)
+    onCleanup(() => observer.disconnect())
+  })
+
   return (
     <div
       ref={props.setPromptDockRef}
@@ -87,30 +139,46 @@ export function SessionComposerRegion(props: {
               </div>
             }
           >
-            <Show when={props.state.dock()}>
+            <Show when={dock()}>
               <div
                 classList={{
-                  "transition-[max-height,opacity,transform] duration-[400ms] ease-out overflow-hidden": true,
-                  "max-h-[320px]": !props.state.closing(),
-                  "max-h-0 pointer-events-none": props.state.closing(),
-                  "opacity-0 translate-y-9": props.state.closing() || props.state.opening(),
-                  "opacity-100 translate-y-0": !props.state.closing() && !props.state.opening(),
+                  "overflow-hidden": true,
+                  "pointer-events-none": value() < 0.98,
+                }}
+                style={{
+                  "max-height": `${full() * value()}px`,
                 }}
               >
-                <SessionTodoDock
-                  todos={props.state.todos()}
-                  title={language.t("session.todo.title")}
-                  collapseLabel={language.t("session.todo.collapse")}
-                  expandLabel={language.t("session.todo.expand")}
-                />
+                <div ref={setContentRef}>
+                  <SessionTodoDock
+                    todos={props.state.todos()}
+                    title={language.t("session.todo.title")}
+                    collapseLabel={language.t("session.todo.collapse")}
+                    expandLabel={language.t("session.todo.expand")}
+                    dockProgress={value()}
+                    visualDuration={props.visualDuration}
+                    bounce={props.bounce}
+                    expandVisualDuration={props.drawerExpandVisualDuration}
+                    expandBounce={props.drawerExpandBounce}
+                    collapseVisualDuration={props.drawerCollapseVisualDuration}
+                    collapseBounce={props.drawerCollapseBounce}
+                    subtitleDuration={props.subtitleDuration}
+                    subtitleTravel={props.subtitleTravel}
+                    subtitleEdge={props.subtitleEdge}
+                    countDuration={props.countDuration}
+                    countMask={props.countMask}
+                    countMaskHeight={props.countMaskHeight}
+                    countWidthDuration={props.countWidthDuration}
+                  />
+                </div>
               </div>
             </Show>
             <div
               classList={{
                 "relative z-10": true,
-                "transition-[margin] duration-[400ms] ease-out": true,
-                "-mt-9": props.state.dock() && !props.state.closing(),
-                "mt-0": !props.state.dock() || props.state.closing(),
+              }}
+              style={{
+                "margin-top": `${-36 * value()}px`,
               }}
             >
               <PromptInput
diff --git a/packages/app/src/pages/session/composer/session-composer-state.ts b/packages/app/src/pages/session/composer/session-composer-state.ts
index 201846177..03e96463c 100644
--- a/packages/app/src/pages/session/composer/session-composer-state.ts
+++ b/packages/app/src/pages/session/composer/session-composer-state.ts
@@ -29,7 +29,11 @@ export function createSessionComposerBlocked() {
   })
 }
 
-export function createSessionComposerState() {
+export function createSessionComposerState(
+  options?: {
+    closeMs?: number | (() => number)
+  },
+) {
   const params = useParams()
   const sdk = useSDK()
   const sync = useSync()
@@ -96,12 +100,19 @@ export function createSessionComposerState() {
   let timer: number | undefined
   let raf: number | undefined
 
+  const closeMs = () => {
+    const value = options?.closeMs
+    if (typeof value === "function") return Math.max(0, value())
+    if (typeof value === "number") return Math.max(0, value)
+    return 400
+  }
+
   const scheduleClose = () => {
     if (timer) window.clearTimeout(timer)
     timer = window.setTimeout(() => {
       setStore({ dock: false, closing: false })
       timer = undefined
-    }, 400)
+    }, closeMs())
   }
 
   createEffect(
diff --git a/packages/app/src/pages/session/composer/session-todo-dock.tsx b/packages/app/src/pages/session/composer/session-todo-dock.tsx
index 279982760..ab8755aec 100644
--- a/packages/app/src/pages/session/composer/session-todo-dock.tsx
+++ b/packages/app/src/pages/session/composer/session-todo-dock.tsx
@@ -1,8 +1,12 @@
 import type { Todo } from "@opencode-ai/sdk/v2"
+import { AnimatedNumber } from "@opencode-ai/ui/animated-number"
 import { Checkbox } from "@opencode-ai/ui/checkbox"
 import { DockTray } from "@opencode-ai/ui/dock-surface"
 import { IconButton } from "@opencode-ai/ui/icon-button"
-import { For, Show, createEffect, createMemo, createSignal, on, onCleanup } from "solid-js"
+import { useSpring } from "@opencode-ai/ui/motion-spring"
+import { TextReveal } from "@opencode-ai/ui/text-reveal"
+import { TextStrikethrough } from "@opencode-ai/ui/text-strikethrough"
+import { Index, createEffect, createMemo, createSignal, on, onCleanup } from "solid-js"
 import { createStore } from "solid-js/store"
 
 function dot(status: Todo["status"]) {
@@ -30,19 +34,35 @@ function dot(status: Todo["status"]) {
   )
 }
 
-export function SessionTodoDock(props: { todos: Todo[]; title: string; collapseLabel: string; expandLabel: string }) {
+export function SessionTodoDock(props: {
+  todos: Todo[]
+  title: string
+  collapseLabel: string
+  expandLabel: string
+  dockProgress?: number
+  visualDuration?: number
+  bounce?: number
+  expandVisualDuration?: number
+  expandBounce?: number
+  collapseVisualDuration?: number
+  collapseBounce?: number
+  subtitleDuration?: number
+  subtitleTravel?: number
+  subtitleEdge?: number
+  countDuration?: number
+  countMask?: number
+  countMaskHeight?: number
+  countWidthDuration?: number
+}) {
   const [store, setStore] = createStore({
     collapsed: false,
   })
 
   const toggle = () => setStore("collapsed", (value) => !value)
 
-  const summary = createMemo(() => {
-    const total = props.todos.length
-    if (total === 0) return ""
-    const completed = props.todos.filter((todo) => todo.status === "completed").length
-    return `${completed} of ${total} ${props.title.toLowerCase()} completed`
-  })
+  const total = createMemo(() => props.todos.length)
+  const done = createMemo(() => props.todos.filter((todo) => todo.status === "completed").length)
+  const label = createMemo(() => `${done()} of ${total()} ${props.title.toLowerCase()} completed`)
 
   const active = createMemo(
     () =>
@@ -53,56 +73,134 @@ export function SessionTodoDock(props: { todos: Todo[]; title: string; collapseL
   )
 
   const preview = createMemo(() => active()?.content ?? "")
+  const config = createMemo(() =>
+    store.collapsed
+      ? {
+          visualDuration: props.collapseVisualDuration ?? props.visualDuration ?? 0.3,
+          bounce: props.collapseBounce ?? props.bounce ?? 0,
+        }
+      : {
+          visualDuration: props.expandVisualDuration ?? props.visualDuration ?? 0.3,
+          bounce: props.expandBounce ?? props.bounce ?? 0,
+        },
+  )
+  const collapse = useSpring(() => (store.collapsed ? 1 : 0), config)
+  const dock = createMemo(() => Math.max(0, Math.min(1, props.dockProgress ?? 1)))
+  const shut = createMemo(() => 1 - dock())
+  const value = createMemo(() => Math.max(0, Math.min(1, collapse())))
+  const hide = createMemo(() => Math.max(value(), shut()))
+  const off = createMemo(() => hide() > 0.98)
+  const turn = createMemo(() => Math.max(0, Math.min(1, value())))
+  const [height, setHeight] = createSignal(320)
+  const full = createMemo(() => Math.max(78, height()))
+  let contentRef: HTMLDivElement | undefined
+
+  createEffect(() => {
+    const el = contentRef
+    if (!el) return
+    const update = () => {
+      setHeight(el.getBoundingClientRect().height)
+    }
+    update()
+    const observer = new ResizeObserver(update)
+    observer.observe(el)
+    onCleanup(() => observer.disconnect())
+  })
 
   return (
     <DockTray
       data-component="session-todo-dock"
-      classList={{
-        "h-[78px]": store.collapsed,
+      style={{
+        "overflow-x": "visible",
+        "overflow-y": "hidden",
+        "max-height": `${Math.max(78, full() - value() * (full() - 78))}px`,
       }}
     >
-      <div
-        data-action="session-todo-toggle"
-        class="pl-3 pr-2 py-2 flex items-center gap-2"
-        role="button"
-        tabIndex={0}
-        onClick={toggle}
-        onKeyDown={(event) => {
-          if (event.key !== "Enter" && event.key !== " ") return
-          event.preventDefault()
-          toggle()
-        }}
-      >
-        <span class="text-14-regular text-text-strong cursor-default">{summary()}</span>
-        <Show when={store.collapsed}>
-          <div class="ml-1 flex-1 min-w-0">
-            <Show when={preview()}>
-              <div class="text-14-regular text-text-base truncate cursor-default">{preview()}</div>
-            </Show>
-          </div>
-        </Show>
-        <div classList={{ "ml-auto": !store.collapsed, "ml-1": store.collapsed }}>
-          <IconButton
-            data-action="session-todo-toggle-button"
-            icon="chevron-down"
-            size="normal"
-            variant="ghost"
-            classList={{ "rotate-180": store.collapsed }}
-            onMouseDown={(event) => {
-              event.preventDefault()
-              event.stopPropagation()
+      <div ref={contentRef}>
+        <div
+          data-action="session-todo-toggle"
+          class="pl-3 pr-2 py-2 flex items-center gap-2 overflow-visible"
+          role="button"
+          tabIndex={0}
+          onClick={toggle}
+          onKeyDown={(event) => {
+            if (event.key !== "Enter" && event.key !== " ") return
+            event.preventDefault()
+            toggle()
+          }}
+        >
+          <span
+            class="text-14-regular text-text-strong cursor-default inline-flex items-baseline shrink-0 whitespace-nowrap overflow-visible"
+            aria-label={label()}
+            style={{
+              "--tool-motion-odometer-ms": `${props.countDuration ?? 600}ms`,
+              "--tool-motion-mask": `${props.countMask ?? 18}%`,
+              "--tool-motion-mask-height": `${props.countMaskHeight ?? 0}px`,
+              "--tool-motion-spring-ms": `${props.countWidthDuration ?? 560}ms`,
+              opacity: `${Math.max(0, Math.min(1, 1 - shut()))}`,
+              filter: `blur(${Math.max(0, Math.min(1, shut())) * 2}px)`,
             }}
-            onClick={(event) => {
-              event.stopPropagation()
-              toggle()
+          >
+            <AnimatedNumber value={done()} />
+            <span class="mx-1">of</span>
+            <AnimatedNumber value={total()} />
+            <span>&nbsp;{props.title.toLowerCase()} completed</span>
+          </span>
+          <div
+            data-slot="session-todo-preview"
+            class="ml-1 min-w-0 overflow-hidden"
+            style={{
+              flex: "1 1 auto",
+              "max-width": "100%",
             }}
-            aria-label={store.collapsed ? props.expandLabel : props.collapseLabel}
-          />
+          >
+            <TextReveal
+              class="text-14-regular text-text-base cursor-default"
+              text={store.collapsed ? preview() : undefined}
+              duration={props.subtitleDuration ?? 600}
+              travel={props.subtitleTravel ?? 25}
+              edge={props.subtitleEdge ?? 17}
+              spring="cubic-bezier(0.34, 1, 0.64, 1)"
+              springSoft="cubic-bezier(0.34, 1, 0.64, 1)"
+              growOnly
+              truncate
+            />
+          </div>
+          <div class="ml-auto">
+            <IconButton
+              data-action="session-todo-toggle-button"
+              data-collapsed={store.collapsed ? "true" : "false"}
+              icon="chevron-down"
+              size="normal"
+              variant="ghost"
+              style={{ transform: `rotate(${turn() * 180}deg)` }}
+              onMouseDown={(event) => {
+                event.preventDefault()
+                event.stopPropagation()
+              }}
+              onClick={(event) => {
+                event.stopPropagation()
+                toggle()
+              }}
+              aria-label={store.collapsed ? props.expandLabel : props.collapseLabel}
+            />
+          </div>
         </div>
-      </div>
 
-      <div data-slot="session-todo-list" hidden={store.collapsed}>
-        <TodoList todos={props.todos} open={!store.collapsed} />
+        <div
+          data-slot="session-todo-list"
+          aria-hidden={store.collapsed || off()}
+          classList={{
+            "pointer-events-none": hide() > 0.1,
+          }}
+          style={{
+            visibility: off() ? "hidden" : "visible",
+            opacity: `${Math.max(0, Math.min(1, 1 - hide()))}`,
+            filter: `blur(${Math.max(0, Math.min(1, hide())) * 2}px)`,
+          }}
+        >
+          <TodoList todos={props.todos} open={!store.collapsed} />
+        </div>
       </div>
     </DockTray>
   )
@@ -171,33 +269,43 @@ function TodoList(props: { todos: Todo[]; open: boolean }) {
           }, 250)
         }}
       >
-        <For each={props.todos}>
+        <Index each={props.todos}>
           {(todo) => (
             <Checkbox
               readOnly
-              checked={todo.status === "completed"}
-              indeterminate={todo.status === "in_progress"}
-              data-in-progress={todo.status === "in_progress" ? "" : undefined}
-              icon={dot(todo.status)}
-              style={{ "--checkbox-align": "flex-start", "--checkbox-offset": "1px" }}
+              checked={todo().status === "completed"}
+              indeterminate={todo().status === "in_progress"}
+              data-in-progress={todo().status === "in_progress" ? "" : undefined}
+              data-state={todo().status}
+              icon={dot(todo().status)}
+              style={{
+                "--checkbox-align": "flex-start",
+                "--checkbox-offset": "1px",
+                transition:
+                  "opacity 220ms var(--tool-motion-ease, cubic-bezier(0.22, 1, 0.36, 1)), filter 220ms var(--tool-motion-ease, cubic-bezier(0.22, 1, 0.36, 1))",
+                opacity: todo().status === "pending" ? "0.94" : "1",
+                filter: todo().status === "pending" ? "blur(0.3px)" : "blur(0px)",
+              }}
             >
-              <span
+              <TextStrikethrough
+                active={todo().status === "completed" || todo().status === "cancelled"}
+                text={todo().content}
                 class="text-14-regular min-w-0 break-words"
-                classList={{
-                  "text-text-weak": todo.status === "completed" || todo.status === "cancelled",
-                  "text-text-strong": todo.status !== "completed" && todo.status !== "cancelled",
-                }}
                 style={{
                   "line-height": "var(--line-height-normal)",
-                  "text-decoration":
-                    todo.status === "completed" || todo.status === "cancelled" ? "line-through" : undefined,
+                  transition:
+                    "color 220ms var(--tool-motion-ease, cubic-bezier(0.22, 1, 0.36, 1)), opacity 220ms var(--tool-motion-ease, cubic-bezier(0.22, 1, 0.36, 1)), filter 220ms var(--tool-motion-ease, cubic-bezier(0.22, 1, 0.36, 1))",
+                  color:
+                    todo().status === "completed" || todo().status === "cancelled"
+                      ? "var(--text-weak)"
+                      : "var(--text-strong)",
+                  opacity: todo().status === "pending" ? "0.92" : "1",
+                  filter: todo().status === "pending" ? "blur(0.3px)" : "blur(0px)",
                 }}
-              >
-                {todo.content}
-              </span>
+              />
             </Checkbox>
           )}
-        </For>
+        </Index>
       </div>
       <div
         class="pointer-events-none absolute top-0 left-0 right-0 h-4 transition-opacity duration-150"
diff --git a/packages/app/src/pages/session/message-timeline.tsx b/packages/app/src/pages/session/message-timeline.tsx
index 7c711989e..0aa07bf74 100644
--- a/packages/app/src/pages/session/message-timeline.tsx
+++ b/packages/app/src/pages/session/message-timeline.tsx
@@ -10,8 +10,9 @@ import { Dialog } from "@opencode-ai/ui/dialog"
 import { InlineInput } from "@opencode-ai/ui/inline-input"
 import { SessionTurn } from "@opencode-ai/ui/session-turn"
 import { ScrollView } from "@opencode-ai/ui/scroll-view"
-import type { Part, TextPart, UserMessage } from "@opencode-ai/sdk/v2"
+import type { AssistantMessage, Message as MessageType, Part, TextPart, UserMessage } from "@opencode-ai/sdk/v2"
 import { showToast } from "@opencode-ai/ui/toast"
+import { Binary } from "@opencode-ai/util/binary"
 import { getFilename } from "@opencode-ai/util/path"
 import { shouldMarkBoundaryGesture, normalizeWheelDelta } from "@/pages/session/message-gesture"
 import { SessionContextUsage } from "@/components/session-context-usage"
@@ -31,6 +32,9 @@ type MessageComment = {
   }
 }
 
+const emptyMessages: MessageType[] = []
+const idle = { type: "idle" as const }
+
 const messageComments = (parts: Part[]): MessageComment[] =>
   parts.flatMap((part) => {
     if (part.type !== "text" || !(part as TextPart).synthetic) return []
@@ -213,8 +217,34 @@ export function MessageTimeline(props: {
   const dialog = useDialog()
   const language = useLanguage()
 
+  const rendered = createMemo(() => props.renderedUserMessages.map((message) => message.id))
   const sessionKey = createMemo(() => `${params.dir}${params.id ? "/" + params.id : ""}`)
   const sessionID = createMemo(() => params.id)
+  const sessionMessages = createMemo(() => {
+    const id = sessionID()
+    if (!id) return emptyMessages
+    return sync.data.message[id] ?? emptyMessages
+  })
+  const pending = createMemo(() =>
+    sessionMessages().findLast(
+      (item): item is AssistantMessage => item.role === "assistant" && typeof item.time.completed !== "number",
+    ),
+  )
+  const activeMessageID = createMemo(() => {
+    const parentID = pending()?.parentID
+    if (!parentID) return
+
+    const messages = sessionMessages()
+    const result = Binary.search(messages, parentID, (message) => message.id)
+    const message = result.found ? messages[result.index] : messages.find((item) => item.id === parentID)
+    if (!message || message.role !== "user") return
+    return message.id
+  })
+  const sessionStatus = createMemo(() => {
+    const id = sessionID()
+    if (!id) return idle
+    return sync.data.session_status[id] ?? idle
+  })
   const info = createMemo(() => {
     const id = sessionID()
     if (!id) return
@@ -651,17 +681,23 @@ export function MessageTimeline(props: {
                 </Button>
               </div>
             </Show>
-            <For each={staging.messages()}>
-              {(message) => {
-                const comments = createMemo(() => messageComments(sync.data.part[message.id] ?? []))
+            <For each={rendered()}>
+              {(messageID) => {
+                const active = createMemo(() => activeMessageID() === messageID)
+                const queued = createMemo(() => {
+                  const item = pending()
+                  if (!item || active()) return false
+                  return messageID > item.id
+                })
+                const comments = createMemo(() => messageComments(sync.data.part[messageID] ?? []))
                 const commentCount = createMemo(() => comments().length)
                 return (
                   <div
-                    id={props.anchor(message.id)}
-                    data-message-id={message.id}
+                    id={props.anchor(messageID)}
+                    data-message-id={messageID}
                     ref={(el) => {
-                      props.onRegisterMessage(el, message.id)
-                      onCleanup(() => props.onUnregisterMessage(message.id))
+                      props.onRegisterMessage(el, messageID)
+                      onCleanup(() => props.onUnregisterMessage(messageID))
                     }}
                     classList={{
                       "min-w-0 w-full max-w-full": true,
@@ -701,7 +737,10 @@ export function MessageTimeline(props: {
                     </Show>
                     <SessionTurn
                       sessionID={sessionID() ?? ""}
-                      messageID={message.id}
+                      messageID={messageID}
+                      active={active()}
+                      queued={queued()}
+                      status={active() ? sessionStatus() : undefined}
                       showReasoningSummaries={settings.general.showReasoningSummaries()}
                       shellToolDefaultOpen={settings.general.shellToolPartsExpanded()}
                       editToolDefaultOpen={settings.general.editToolPartsExpanded()}