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ECHO-212 add scroll to bottom button in chat for tablet and desktop #264

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Merged
ussaama merged 2 commits into from
Aug 13, 2025
Merged

ECHO-212 add scroll to bottom button in chat for tablet and desktop #264

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91e3b5c
- add scroll to bottom button in chat
ussaama Aug 13, 2025
4bd1d1a
- aria field
ussaama Aug 13, 2025
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27 changes: 27 additions & 0 deletions echo/frontend/src/routes/project/chat/ProjectChatRoute.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -44,6 +44,8 @@ import {
import SourcesSearch from "@/components/chat/SourcesSearch";
import SpikeMessage from "@/components/participant/SpikeMessage";
import { Logo } from "@/components/common/Logo";
import { ScrollToBottomButton } from "@/components/common/ScrollToBottom";
import { useElementOnScreen } from "@/hooks/useElementOnScreen";

const useDembraneChat = ({ chatId }: { chatId: string }) => {
const chatHistoryQuery = useChatHistory(chatId);
Expand All @@ -60,6 +62,12 @@ const useDembraneChat = ({ chatId }: { chatId: string }) => {
const lastInput = useRef("");
const lastMessageRef = useRef<HTMLDivElement>(null);

const [scrollTargetRef, isVisible] = useElementOnScreen({
root: null,
rootMargin: "-83px",
threshold: 0.1,
});

const contextToBeAdded = useMemo(() => {
if (!chatContextQuery.data) {
return null;
Expand Down Expand Up @@ -238,6 +246,8 @@ const useDembraneChat = ({ chatId }: { chatId: string }) => {
error,
lastInputRef: lastInput,
lastMessageRef,
scrollTargetRef,
isVisible,
reload,
setInput,
handleInputChange,
Expand Down Expand Up @@ -267,6 +277,8 @@ export const ProjectChatRoute = () => {
error,
contextToBeAdded,
lastMessageRef,
scrollTargetRef,
isVisible,
setInput,
handleInputChange,
handleSubmit,
Expand Down Expand Up @@ -447,9 +459,24 @@ export const ProjectChatRoute = () => {
)}
</Stack>
</Box>

{/* Scroll target for scroll to bottom button */}
<div ref={scrollTargetRef} aria-hidden="true" />

{/* Footer */}
<Box className="bottom-0 w-full bg-white pb-2 pt-4 md:sticky">
<Stack className="pb-2">
{/* Scroll to bottom button */}
<Group
justify="center"
className="absolute bottom-[105%] left-1/2 z-50 hidden translate-x-[-50%] md:flex"
>
<ScrollToBottomButton
elementRef={scrollTargetRef}
isVisible={isVisible}
/>
</Group>

<ChatTemplatesMenu onTemplateSelect={handleTemplateSelect} />

<Divider />
Expand Down