Files
llama.cpp/tools/ui/src/lib/components/app/content/CollapsibleTerminalBlock.svelte
T
555881ebc8 ui: reduce per-token render cost when streaming (#26053)
* performance harness - the empirical root

Assisted-by: Claude Opus 4.8

* 210.36ms -> 2.67ms per streamed token

Assisted-by: Claude Opus 4.8

* 11.58ms -> 0.62ms per streamed token

Assisted-by: Claude Opus 4.8

* 22.02ms -> 3.33ms per streamed token

Assisted-by: Claude Opus 4.8

* 3.07ms -> 1.36ms per streamed token at 40 messages

Assisted-by: Claude Opus 4.8

---------

Co-authored-by: Zach Winter <dmtommy@icloud.com>
2026-07-24 22:09:46 +02:00

102 lines
2.6 KiB
Svelte

<script lang="ts">
import ChevronDown from '@lucide/svelte/icons/chevron-down';
import * as Collapsible from '$lib/components/ui/collapsible/index.js';
import { cn } from '$lib/components/ui/utils';
import { ICON_CLASS_DEFAULT } from '$lib/constants';
import type { Snippet } from 'svelte';
import type { Component } from 'svelte';
interface Props {
open?: boolean;
class?: string;
icon?: Component;
iconClass?: string;
iconUrl?: string | null;
title?: string;
titleSnippet?: Snippet;
subtitle?: string;
shimmerTitle?: boolean;
onToggle?: () => void;
children: Snippet;
}
let {
open = $bindable(false),
class: className = '',
icon: IconComponent,
iconClass = ICON_CLASS_DEFAULT,
iconUrl = null,
title = '',
titleSnippet,
subtitle,
shimmerTitle = false,
onToggle,
children
}: Props = $props();
function hideBrokenIcon(event: Event) {
(event.currentTarget as HTMLImageElement).style.display = 'none';
}
</script>
<Collapsible.Root
{open}
onOpenChange={(value) => {
open = value;
onToggle?.();
}}
class={cn('group/collapsible', 'overflow-hidden rounded-md', className)}
style="background: var(--code-background); border: 1px solid color-mix(in oklch, var(--border) 30%, transparent);"
>
<Collapsible.Trigger
class={cn(
'flex w-full cursor-pointer items-start justify-between gap-2 text-left',
'px-3 py-2'
)}
>
<div class="flex min-w-0 items-start gap-2 text-muted-foreground">
{#if iconUrl}
<img
src={iconUrl}
alt=""
class={cn('shrink-0 rounded-sm mt-0.5', iconClass)}
onerror={hideBrokenIcon}
/>
{:else if IconComponent}
<IconComponent class={cn('shrink-0 text-muted-foreground/60 mt-0.5', iconClass)} />
{/if}
<span class={cn('text-sm font-medium', shimmerTitle ? 'shimmer-text' : 'text-foreground/80')}>
{#if titleSnippet}
{@render titleSnippet()}
{:else}
{title}
{/if}
</span>
{#if subtitle}
<span class="text-xs italic text-muted-foreground/70">{subtitle}</span>
{/if}
</div>
<ChevronDown
class={cn(
'size-4 shrink-0 text-muted-foreground/60 transition-all duration-150 ease-out opacity-0 group-hover/collapsible:opacity-100 mt-0.5',
open && 'rotate-180'
)}
/>
<span class="sr-only">Toggle content</span>
</Collapsible.Trigger>
<Collapsible.Content>
<!-- See CollapsibleContentBlock: bits-ui keeps closed content mounted, which
makes a collapsed tool result re-render on every streamed token. -->
{#if open}
<div class="p-3 pt-1">
{@render children()}
</div>
{/if}
</Collapsible.Content>
</Collapsible.Root>