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Adds functionality to scroll to bottom of messages container on submi… #250

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merged 1 commit into from
May 30, 2024
Merged

Adds functionality to scroll to bottom of messages container on submi… #250

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25 changes: 19 additions & 6 deletions apps/www/src/components/Chat.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -49,6 +49,7 @@ const ChatMessage: React.FC<{
};

export const Chat = () => {
const messagesDivRef = React.useRef<HTMLInputElement>(null);
const storage = !IS_SERVER ? window.localStorage : null;
const [currentApiKey, setCurrentApiKey] = React.useState<string>(
storage?.getItem(CHAT_OPENAI_API_KEY) ?? "",
Expand All @@ -75,6 +76,12 @@ export const Chat = () => {
},
});

const scrollToBottom = () => {
if (messagesDivRef.current) {
messagesDivRef.current.scrollTop = messagesDivRef.current.scrollHeight;
}
};

const handleUpdateApiKey = (e: React.ChangeEvent<HTMLInputElement>) => {
const newApiKey = e.target.value;
setCurrentApiKey(newApiKey);
Expand All @@ -84,6 +91,12 @@ export const Chat = () => {
setSelectedChatGptModel(value);
};

const onSubmit = (e: React.FormEvent<HTMLFormElement>) => {
storage?.setItem(CHAT_OPENAI_API_KEY, currentApiKey);
scrollToBottom();
handleSubmit(e);
};

const messagesWithoutSystem = messages.slice(1);
const reversedMessagesWithoutSystem = R.reverse(messagesWithoutSystem);
return (
Expand Down Expand Up @@ -114,14 +127,14 @@ export const Chat = () => {
</div>
<form
autoComplete="off"
onSubmit={(e) => {
storage?.setItem(CHAT_OPENAI_API_KEY, currentApiKey);
handleSubmit(e);
}}
onSubmit={onSubmit}
className="flex flex-col flex-1"
>
{/* Col-reverse is used to enable automatic scrolling as content populates the div */}
<div className="flex flex-1 flex-col-reverse overflow-y-auto pt-4 pb-3">
<div
ref={messagesDivRef}
className="flex flex-1 flex-col-reverse overflow-y-auto pt-4 pb-3"
>
{/* This div takes up all the remaining space so the messages start at the top */}
<div className="flex flex-1" />
{reversedMessagesWithoutSystem.map((message, index) => {
Expand Down Expand Up @@ -173,7 +186,7 @@ export const Chat = () => {
}
if (e.key === "Enter" && !e.shiftKey) {
e.preventDefault();
handleSubmit(e as unknown as React.FormEvent<HTMLFormElement>);
onSubmit(e as unknown as React.FormEvent<HTMLFormElement>);
}
}}
placeholder="Message ChatGPT"
Expand Down
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