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<script lang="ts">
import { tick } from "svelte";
import { tabStore } from "../tabs.svelte.js";
function statusColor(status: string): string {
if (status === "running") return "bg-warning";
if (status === "error") return "bg-error";
return "bg-success";
}
const userTabs = $derived(tabStore.tabs.filter((t) => t.parentTabId === null));
const subagentTabs = $derived(
tabStore.tabs.filter((t) => t.parentTabId !== null && t.parentTabId === activeUserTabId),
);
const hasSubagentTabs = $derived(subagentTabs.length > 0);
// When a subagent tab is active, its parent user tab should still appear selected
const activeTab = $derived(tabStore.tabs.find((t) => t.id === tabStore.activeTabId));
const activeUserTabId = $derived(
activeTab?.parentTabId !== null && activeTab?.parentTabId !== undefined
? activeTab.parentTabId
: tabStore.activeTabId,
);
// ── Drag-and-drop reorder (user tabs only) ──
// Mirrors the native HTML5 DnD pattern used in AgentBuilder.svelte.
let dragIndex = $state<number | null>(null);
let dragOverIndex = $state<number | null>(null);
function dropReorder(targetIndex: number): void {
if (dragIndex !== null && dragIndex !== targetIndex) {
const ids = userTabs.map((t) => t.id);
const moved = ids.splice(dragIndex, 1)[0];
if (moved) {
ids.splice(targetIndex, 0, moved);
tabStore.reorderTabs(ids);
}
}
dragIndex = null;
dragOverIndex = null;
}
// ── Double-click rename (user tabs only) ──
let editingTabId = $state<string | null>(null);
let editValue = $state("");
let editInputEl = $state<HTMLInputElement | undefined>(undefined);
async function startRename(tab: { id: string; title: string }): Promise<void> {
editingTabId = tab.id;
editValue = tab.title;
await tick();
editInputEl?.focus();
editInputEl?.select();
}
function commitRename(): void {
if (editingTabId === null) return;
const id = editingTabId;
editingTabId = null;
const next = editValue.trim();
if (next) tabStore.renameTab(id, next);
}
function cancelRename(): void {
editingTabId = null;
}
function handleRenameKeydown(e: KeyboardEvent): void {
if (e.key === "Enter") {
e.preventDefault();
commitRename();
} else if (e.key === "Escape") {
e.preventDefault();
cancelRename();
}
}
</script>
<!-- Top row: user tabs -->
<!-- svelte-ignore a11y_no_static_element_interactions -->
<div
class="overflow-x-auto bg-base-200 flex-shrink-0 {hasSubagentTabs ? '' : 'rounded-br-lg'}"
ondblclick={(e) => { if (e.target === e.currentTarget) tabStore.createNewTab(); }}
>
<!-- svelte-ignore a11y_no_static_element_interactions -->
<div
role="tablist"
tabindex="0"
class="tabs tabs-lift min-w-max"
ondblclick={(e) => { if (e.target === e.currentTarget) tabStore.createNewTab(); }}
>
<!-- New tab button — always first -->
<button
type="button"
class="tab"
onclick={() => tabStore.createNewTab()}
aria-label="New tab"
>
+
</button>
{#each userTabs as tab, i (tab.id)}
<!-- svelte-ignore a11y_no_static_element_interactions -->
<div
role="tab"
class="tab !flex items-stretch gap-1.5 {tab.id === activeUserTabId ? 'tab-active' : ''} {dragOverIndex === i ? 'bg-primary/10' : ''} {dragIndex === i ? 'opacity-50' : ''}"
draggable={editingTabId === tab.id ? "false" : "true"}
onclick={() => tabStore.switchTab(tab.id)}
onkeydown={(e) => { if (e.key === 'Enter' || e.key === ' ') tabStore.switchTab(tab.id); }}
ondragstart={(e) => {
dragIndex = i;
if (e.dataTransfer) e.dataTransfer.effectAllowed = "move";
}}
ondragover={(e) => {
e.preventDefault();
if (e.dataTransfer) e.dataTransfer.dropEffect = "move";
dragOverIndex = i;
}}
ondragleave={() => { if (dragOverIndex === i) dragOverIndex = null; }}
ondrop={(e) => { e.preventDefault(); dropReorder(i); }}
ondragend={() => { dragIndex = null; dragOverIndex = null; }}
tabindex="0"
>
<span class="flex items-center gap-1.5">
<span class="w-1.5 h-1.5 rounded-full shrink-0 {statusColor(tab.agentStatus)}"></span>
<span class="font-mono text-[10px] px-1 py-0.5 rounded bg-base-300 text-base-content/60 shrink-0" title="Tab ID — agents address this tab by this handle">{tabStore.shortHandleFor(tab.id)}</span>
{#if editingTabId === tab.id}
<input
bind:this={editInputEl}
bind:value={editValue}
class="max-w-32 text-xs bg-base-100 rounded px-1 outline-none ring-1 ring-primary/40"
onclick={(e) => e.stopPropagation()}
ondblclick={(e) => e.stopPropagation()}
onkeydown={handleRenameKeydown}
onblur={commitRename}
/>
{:else}
<span
class="max-w-32 truncate text-xs"
ondblclick={(e) => { e.stopPropagation(); startRename(tab); }}
title="Double-click to rename"
>{tab.title}</span>
{/if}
</span>
<button
type="button"
class="flex items-center justify-center px-3 my-1 leading-none text-base-content/30 hover:text-error hover:bg-base-300 rounded transition-colors text-xs"
onclick={(e) => { e.stopPropagation(); tabStore.closeTab(tab.id); }}
aria-label="Close tab"
>
✕
</button>
</div>
{/each}
</div>
</div>
<!-- Bottom row: subagent tabs (hidden when empty) -->
{#if hasSubagentTabs}
<div class="overflow-x-auto bg-base-200 flex-shrink-0 border-t border-base-300 rounded-br-lg">
<div
role="tablist"
class="tabs tabs-lift tabs-xs min-w-max"
>
{#each subagentTabs as tab (tab.id)}
<!-- svelte-ignore a11y_no_static_element_interactions -->
<div
role="tab"
class="tab !flex items-stretch gap-1 {tab.id === tabStore.activeTabId ? 'tab-active' : ''} {!tab.persistent ? 'opacity-70 italic' : ''}"
onclick={() => tab.persistent ? tabStore.switchTab(tab.id) : tabStore.promoteTab(tab.id)}
onkeydown={(e) => { if (e.key === 'Enter' || e.key === ' ') tab.persistent ? tabStore.switchTab(tab.id) : tabStore.promoteTab(tab.id); }}
tabindex="0"
>
<span class="flex items-center gap-1">
<span class="w-1 h-1 rounded-full shrink-0 {statusColor(tab.agentStatus)}"></span>
<span class="font-mono text-[10px] px-1 rounded bg-base-300 text-base-content/60 shrink-0" title="Tab ID — agents address this tab by this handle">{tabStore.shortHandleFor(tab.id)}</span>
<span class="max-w-28 truncate text-xs">{tab.title}</span>
</span>
{#if tab.persistent}
<button
type="button"
class="flex items-center justify-center px-2 my-0.5 leading-none text-base-content/30 hover:text-error hover:bg-base-300 rounded transition-colors text-xs"
onclick={(e) => { e.stopPropagation(); tabStore.closeTab(tab.id); }}
aria-label="Close tab"
>
✕
</button>
{/if}
</div>
{/each}
</div>
</div>
{/if}
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