From fe89bedfcc6d97fdd4b8066c2c3d8eac92b531ea Mon Sep 17 00:00:00 2001
From: Adam <2363879+adamdotdevin@users.noreply.github.com>
Date: Fri, 20 Feb 2026 10:43:18 -0600
Subject: wip(app): custom scroll view

---
 .../src/components/session/session-context-tab.tsx |  9 ++-
 .../session/composer/session-question-dock.tsx     |  4 +-
 packages/app/src/pages/session/file-tabs.tsx       | 88 +++++++++++-----------
 .../app/src/pages/session/message-timeline.tsx     |  9 ++-
 packages/app/src/pages/session/review-tab.tsx      |  4 +-
 5 files changed, 59 insertions(+), 55 deletions(-)

(limited to 'packages/app/src')

diff --git a/packages/app/src/components/session/session-context-tab.tsx b/packages/app/src/components/session/session-context-tab.tsx
index 162e016c6..1ea97c395 100644
--- a/packages/app/src/components/session/session-context-tab.tsx
+++ b/packages/app/src/components/session/session-context-tab.tsx
@@ -11,6 +11,7 @@ import { Accordion } from "@opencode-ai/ui/accordion"
 import { StickyAccordionHeader } from "@opencode-ai/ui/sticky-accordion-header"
 import { Code } from "@opencode-ai/ui/code"
 import { Markdown } from "@opencode-ai/ui/markdown"
+import { ScrollView } from "@opencode-ai/ui/scroll-view"
 import type { Message, Part, UserMessage } from "@opencode-ai/sdk/v2/client"
 import { useLanguage } from "@/context/language"
 import { getSessionContextMetrics } from "./session-context-metrics"
@@ -268,9 +269,9 @@ export function SessionContextTab() {
   })
 
   return (
-    <div
-      class="@container h-full overflow-y-auto no-scrollbar pb-10"
-      ref={(el) => {
+    <ScrollView
+      class="@container h-full pb-10"
+      viewportRef={(el) => {
         scroll = el
         restoreScroll()
       }}
@@ -336,6 +337,6 @@ export function SessionContextTab() {
           </Accordion>
         </div>
       </div>
-    </div>
+    </ScrollView>
   )
 }
diff --git a/packages/app/src/pages/session/composer/session-question-dock.tsx b/packages/app/src/pages/session/composer/session-question-dock.tsx
index 1ccac937c..fd2ced3dc 100644
--- a/packages/app/src/pages/session/composer/session-question-dock.tsx
+++ b/packages/app/src/pages/session/composer/session-question-dock.tsx
@@ -62,7 +62,7 @@ export const SessionQuestionDock: Component<{ request: QuestionRequest; onSubmit
   const measure = () => {
     if (!root) return
 
-    const scroller = document.querySelector(".session-scroller")
+    const scroller = document.querySelector(".scroll-view__viewport")
     const head = scroller instanceof HTMLElement ? scroller.firstElementChild : undefined
     const top =
       head instanceof HTMLElement && head.classList.contains("sticky") ? head.getBoundingClientRect().bottom : 0
@@ -95,7 +95,7 @@ export const SessionQuestionDock: Component<{ request: QuestionRequest; onSubmit
     window.addEventListener("resize", update)
 
     const dock = root?.closest('[data-component="session-prompt-dock"]')
-    const scroller = document.querySelector(".session-scroller")
+    const scroller = document.querySelector(".scroll-view__viewport")
     const observer = new ResizeObserver(update)
     if (dock instanceof HTMLElement) observer.observe(dock)
     if (scroller instanceof HTMLElement) observer.observe(scroller)
diff --git a/packages/app/src/pages/session/file-tabs.tsx b/packages/app/src/pages/session/file-tabs.tsx
index ebc1f5922..032756cab 100644
--- a/packages/app/src/pages/session/file-tabs.tsx
+++ b/packages/app/src/pages/session/file-tabs.tsx
@@ -9,6 +9,7 @@ import { showToast } from "@opencode-ai/ui/toast"
 import { LineComment as LineCommentView, LineCommentEditor } from "@opencode-ai/ui/line-comment"
 import { Mark } from "@opencode-ai/ui/logo"
 import { Tabs } from "@opencode-ai/ui/tabs"
+import { ScrollView } from "@opencode-ai/ui/scroll-view"
 import { useLayout } from "@/context/layout"
 import { selectionFromLines, useFile, type FileSelection, type SelectedLineRange } from "@/context/file"
 import { useComments } from "@/context/comments"
@@ -509,51 +510,52 @@ export function FileTabContent(props: { tab: string }) {
   )
 
   return (
-    <Tabs.Content
-      value={props.tab}
-      class="mt-3 relative"
-      ref={(el: HTMLDivElement) => {
-        scroll = el
-        restoreScroll()
-      }}
-      onScroll={handleScroll}
-    >
-      <Switch>
-        <Match when={state()?.loaded && isImage()}>
-          <div class="px-6 py-4 pb-40">
-            <img
-              src={imageDataUrl()}
-              alt={path()}
-              class="max-w-full"
-              onLoad={() => requestAnimationFrame(restoreScroll)}
-            />
-          </div>
-        </Match>
-        <Match when={state()?.loaded && isSvg()}>
-          <div class="flex flex-col gap-4 px-6 py-4">
-            {renderCode(svgContent() ?? "", "")}
-            <Show when={svgPreviewUrl()}>
-              <div class="flex justify-center pb-40">
-                <img src={svgPreviewUrl()} alt={path()} class="max-w-full max-h-96" />
+    <Tabs.Content value={props.tab} class="mt-3 relative h-full">
+      <ScrollView
+        class="h-full"
+        viewportRef={(el: HTMLDivElement) => {
+          scroll = el
+          restoreScroll()
+        }}
+        onScroll={handleScroll as any}
+      >
+        <Switch>
+          <Match when={state()?.loaded && isImage()}>
+            <div class="px-6 py-4 pb-40">
+              <img
+                src={imageDataUrl()}
+                alt={path()}
+                class="max-w-full"
+                onLoad={() => requestAnimationFrame(restoreScroll)}
+              />
+            </div>
+          </Match>
+          <Match when={state()?.loaded && isSvg()}>
+            <div class="flex flex-col gap-4 px-6 py-4">
+              {renderCode(svgContent() ?? "", "")}
+              <Show when={svgPreviewUrl()}>
+                <div class="flex justify-center pb-40">
+                  <img src={svgPreviewUrl()} alt={path()} class="max-w-full max-h-96" />
+                </div>
+              </Show>
+            </div>
+          </Match>
+          <Match when={state()?.loaded && isBinary()}>
+            <div class="h-full px-6 pb-42 flex flex-col items-center justify-center text-center gap-6">
+              <Mark class="w-14 opacity-10" />
+              <div class="flex flex-col gap-2 max-w-md">
+                <div class="text-14-semibold text-text-strong truncate">{path()?.split("/").pop()}</div>
+                <div class="text-14-regular text-text-weak">{language.t("session.files.binaryContent")}</div>
               </div>
-            </Show>
-          </div>
-        </Match>
-        <Match when={state()?.loaded && isBinary()}>
-          <div class="h-full px-6 pb-42 flex flex-col items-center justify-center text-center gap-6">
-            <Mark class="w-14 opacity-10" />
-            <div class="flex flex-col gap-2 max-w-md">
-              <div class="text-14-semibold text-text-strong truncate">{path()?.split("/").pop()}</div>
-              <div class="text-14-regular text-text-weak">{language.t("session.files.binaryContent")}</div>
             </div>
-          </div>
-        </Match>
-        <Match when={state()?.loaded}>{renderCode(contents(), "pb-40")}</Match>
-        <Match when={state()?.loading}>
-          <div class="px-6 py-4 text-text-weak">{language.t("common.loading")}...</div>
-        </Match>
-        <Match when={state()?.error}>{(err) => <div class="px-6 py-4 text-text-weak">{err()}</div>}</Match>
-      </Switch>
+          </Match>
+          <Match when={state()?.loaded}>{renderCode(contents(), "pb-40")}</Match>
+          <Match when={state()?.loading}>
+            <div class="px-6 py-4 text-text-weak">{language.t("common.loading")}...</div>
+          </Match>
+          <Match when={state()?.error}>{(err) => <div class="px-6 py-4 text-text-weak">{err()}</div>}</Match>
+        </Switch>
+      </ScrollView>
     </Tabs.Content>
   )
 }
diff --git a/packages/app/src/pages/session/message-timeline.tsx b/packages/app/src/pages/session/message-timeline.tsx
index 6ac89a3a7..b13ccb474 100644
--- a/packages/app/src/pages/session/message-timeline.tsx
+++ b/packages/app/src/pages/session/message-timeline.tsx
@@ -8,6 +8,7 @@ import { DropdownMenu } from "@opencode-ai/ui/dropdown-menu"
 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 { UserMessage } from "@opencode-ai/sdk/v2"
 import { showToast } from "@opencode-ai/ui/toast"
 import { shouldMarkBoundaryGesture, normalizeWheelDelta } from "@/pages/session/message-gesture"
@@ -322,8 +323,8 @@ export function MessageTimeline(props: {
             <Icon name="arrow-down-to-line" />
           </button>
         </div>
-        <div
-          ref={props.setScrollRef}
+        <ScrollView
+          viewportRef={props.setScrollRef}
           onWheel={(e) => {
             const root = e.currentTarget
             const delta = normalizeWheelDelta({
@@ -367,7 +368,7 @@ export function MessageTimeline(props: {
             if (props.isDesktop) props.onScrollSpyScroll()
           }}
           onClick={props.onAutoScrollInteraction}
-          class="relative min-w-0 w-full h-full overflow-y-auto session-scroller"
+          class="relative min-w-0 w-full h-full"
           style={{
             "--session-title-height": showHeader() ? "40px" : "0px",
             "--sticky-accordion-top": showHeader() ? "48px" : "0px",
@@ -548,7 +549,7 @@ export function MessageTimeline(props: {
               )}
             </For>
           </div>
-        </div>
+        </ScrollView>
       </div>
     </Show>
   )
diff --git a/packages/app/src/pages/session/review-tab.tsx b/packages/app/src/pages/session/review-tab.tsx
index 3a9f63949..9349e9937 100644
--- a/packages/app/src/pages/session/review-tab.tsx
+++ b/packages/app/src/pages/session/review-tab.tsx
@@ -143,9 +143,9 @@ export function SessionReviewTab(props: SessionReviewTabProps) {
       open={props.view().review.open()}
       onOpenChange={props.view().review.setOpen}
       classes={{
-        root: props.classes?.root ?? "pb-6",
+        root: props.classes?.root ?? "pb-6 pr-3",
         header: props.classes?.header ?? "px-3",
-        container: props.classes?.container ?? "px-3",
+        container: props.classes?.container ?? "pl-3",
       }}
       diffs={props.diffs()}
       diffStyle={props.diffStyle}
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