Animation Smorgasbord (#15637)

Co-authored-by: Adam <2363879+adamdotdevin@users.noreply.github.com>

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": `${Math.max(78, full() - value() * (full() - 78))}px`,
       }}
     >
-      <div
-        data-action="session-todo-toggle"
-        class="pl-3 pr-2 py-2 flex items-center gap-2"
-        role="button"
-        tabIndex={0}
-        onClick={toggle}
-        onKeyDown={(event) => {
-          if (event.key !== "Enter" && event.key !== " ") return
-          event.preventDefault()
-          toggle()
-        }}
-      >
-        <span class="text-14-regular text-text-strong cursor-default">{summary()}</span>
-        <Show when={store.collapsed}>
-          <div class="ml-1 flex-1 min-w-0">
-            <Show when={preview()}>
-              <div class="text-14-regular text-text-base truncate cursor-default">{preview()}</div>
-            </Show>
+      <div ref={contentRef}>
+        <div
+          data-action="session-todo-toggle"
+          class="pl-3 pr-2 py-2 flex items-center gap-2 overflow-visible"
+          role="button"
+          tabIndex={0}
+          onClick={toggle}
+          onKeyDown={(event) => {
+            if (event.key !== "Enter" && event.key !== " ") return
+            event.preventDefault()
+            toggle()
+          }}
+        >
+          <span
+            class="text-14-regular text-text-strong cursor-default inline-flex items-baseline shrink-0 whitespace-nowrap overflow-visible"
+            aria-label={label()}
+            style={{
+              "--tool-motion-odometer-ms": `${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(${Math.max(0, Math.min(1, shut())) * 2}px)`,
+            }}
+          >
+            <AnimatedNumber value={done()} />
+            <span class="mx-1">of</span>
+            <AnimatedNumber value={total()} />
+            <span>&nbsp;{props.title.toLowerCase()} completed</span>
+          </span>
+          <div
+            data-slot="session-todo-preview"
+            class="ml-1 min-w-0 overflow-hidden"
+            style={{
+              flex: "1 1 auto",
+              "max-width": "100%",
+            }}
+          >
+            <TextReveal
+              class="text-14-regular text-text-base cursor-default"
+              text={store.collapsed ? preview() : undefined}
+              duration={props.subtitleDuration ?? 600}
+              travel={props.subtitleTravel ?? 25}
+              edge={props.subtitleEdge ?? 17}
+              spring="cubic-bezier(0.34, 1, 0.64, 1)"
+              springSoft="cubic-bezier(0.34, 1, 0.64, 1)"
+              growOnly
+              truncate
+            />
+          </div>
+          <div class="ml-auto">
+            <IconButton
+              data-action="session-todo-toggle-button"
+              data-collapsed={store.collapsed ? "true" : "false"}
+              icon="chevron-down"
+              size="normal"
+              variant="ghost"
+              style={{ transform: `rotate(${turn() * 180}deg)` }}
+              onMouseDown={(event) => {
+                event.preventDefault()
+                event.stopPropagation()
+              }}
+              onClick={(event) => {
+                event.stopPropagation()
+                toggle()
+              }}
+              aria-label={store.collapsed ? props.expandLabel : props.collapseLabel}
+            />
           </div>
-        </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()
-            }}
-            onClick={(event) => {
-              event.stopPropagation()
-              toggle()
-            }}
-            aria-label={store.collapsed ? props.expandLabel : props.collapseLabel}
-          />
         </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"