chat-ui / src /lib /components /chat /ChatMessages.svelte
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nsarrazin HF staff
fix: (#621)
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<script lang="ts">
import type { Message } from "$lib/types/Message";
import { snapScrollToBottom } from "$lib/actions/snapScrollToBottom";
import ScrollToBottomBtn from "$lib/components/ScrollToBottomBtn.svelte";
import { tick } from "svelte";
import { randomUUID } from "$lib/utils/randomUuid";
import type { Model } from "$lib/types/Model";
import ChatIntroduction from "./ChatIntroduction.svelte";
import ChatMessage from "./ChatMessage.svelte";
import type { WebSearchUpdate } from "$lib/types/MessageUpdate";
import { browser } from "$app/environment";
import SystemPromptModal from "../SystemPromptModal.svelte";
export let messages: Message[];
export let loading: boolean;
export let pending: boolean;
export let isAuthor: boolean;
export let currentModel: Model;
export let models: Model[];
export let preprompt: string | undefined;
export let readOnly: boolean;
let chatContainer: HTMLElement;
export let webSearchMessages: WebSearchUpdate[] = [];
async function scrollToBottom() {
await tick();
chatContainer.scrollTop = chatContainer.scrollHeight;
}
// If last message is from user, scroll to bottom
$: if (browser && messages[messages.length - 1]?.from === "user") {
scrollToBottom();
}
</script>
<div
class="scrollbar-custom mr-1 h-full overflow-y-auto"
use:snapScrollToBottom={messages.length ? [...messages, ...webSearchMessages] : false}
bind:this={chatContainer}
>
<div class="mx-auto flex h-full max-w-3xl flex-col gap-6 px-5 pt-6 sm:gap-8 xl:max-w-4xl">
{#each messages as message, i}
{#if i === 0 && preprompt && preprompt != currentModel.preprompt}
<SystemPromptModal preprompt={preprompt ?? ""} />
{/if}
<ChatMessage
loading={loading && i === messages.length - 1}
{message}
{isAuthor}
{readOnly}
model={currentModel}
webSearchMessages={i === messages.length - 1 ? webSearchMessages : []}
on:retry
on:vote
/>
{:else}
<ChatIntroduction {models} {currentModel} on:message />
{/each}
{#if pending}
<ChatMessage
message={{ from: "assistant", content: "", id: randomUUID() }}
model={currentModel}
{webSearchMessages}
/>
{/if}
<div class="h-44 flex-none" />
</div>
<ScrollToBottomBtn
class="bottom-36 right-4 max-md:hidden lg:right-10"
scrollNode={chatContainer}
/>
</div>