refactor: split FileBrowserPane / Workspace / runAssistantTurn

- FileBrowserPane.tsx: deleted (unreferenced post-v1.4 PaneTab.tsx removal;
  the legacy file_browser pane kind isn't part of the active WorkspacePane
  taxonomy).
- Workspace.tsx (524 -> 172 lines): extracted useWorkspacePanes(sessionId)
  and useSessionChats(sessionId) hooks. Workspace is layout-only composition
  now. localStorage key + WS frame handling + drag semantics unchanged.
- inference.ts runAssistantTurn (~265 -> 48 lines): bundled args into
  TurnArgs interface, extracted executeStreamPhase / executeToolPhase /
  finalizeCompletion / handleAbortOrError. All WS publish ordering preserved
  byte-for-byte (mentally traced for tool / non-tool / abort / error /
  depth-exceeded paths). flushPromise chain + setImmediate + signal
  propagation unchanged.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
2026-05-16 04:35:20 +00:00
parent 59fe6f0522
commit 9436a81b5f
5 changed files with 779 additions and 1421 deletions

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import { useCallback, useEffect, useRef, useState } from 'react';
import type { DragEvent } from 'react';
import { toast } from 'sonner';
import type { WorkspacePane } from '@/api/types';
import { setActivePaneInfo, clearActivePane } from '@/hooks/useActivePane';
export const MAX_PANES = 5;
const STORAGE_KEY = 'boocode.workspace.panes';
function generateId(): string {
return crypto.randomUUID();
}
function emptyPane(): WorkspacePane {
return { id: generateId(), kind: 'empty', chatIds: [], activeChatIdx: -1 };
}
function chatPane(chatId: string): WorkspacePane {
return { id: generateId(), kind: 'chat', chatId, chatIds: [chatId], activeChatIdx: 0 };
}
function loadPanes(sessionId: string): WorkspacePane[] | null {
try {
const raw = localStorage.getItem(`${STORAGE_KEY}.${sessionId}`);
if (!raw) return null;
const parsed = JSON.parse(raw) as WorkspacePane[];
if (!Array.isArray(parsed) || parsed.length === 0) return null;
return parsed;
} catch {
return null;
}
}
function savePanes(sessionId: string, panes: WorkspacePane[]): void {
try {
localStorage.setItem(`${STORAGE_KEY}.${sessionId}`, JSON.stringify(panes));
} catch { /* quota or disabled */ }
}
export interface UseWorkspacePanesResult {
panes: WorkspacePane[];
activePaneIdx: number;
setActivePaneIdx: React.Dispatch<React.SetStateAction<number>>;
activePaneIdxRef: React.MutableRefObject<number>;
openChatInPane: (paneIdx: number, chatId: string) => void;
switchTab: (paneIdx: number, tabIdx: number) => void;
removeTab: (paneIdx: number, chatId: string) => void;
closeOtherTabs: (paneIdx: number, keepChatId: string) => void;
closeTabsToRight: (paneIdx: number, pivotChatId: string) => void;
closeAllTabs: (paneIdx: number) => void;
showLandingPage: (paneIdx: number) => void;
addSplitPane: (kind: 'chat' | 'terminal' | 'agent') => void;
removePane: (idx: number) => void;
removeChatFromPanes: (chatId: string) => void;
initializeFirstChatIfEmpty: (chatId: string) => void;
handlePaneDragStart: (idx: number) => (e: DragEvent<HTMLDivElement>) => void;
handlePaneDragOver: (idx: number) => (e: DragEvent<HTMLDivElement>) => void;
handlePaneDragLeave: () => void;
handlePaneDrop: (targetIdx: number) => (e: DragEvent<HTMLDivElement>) => void;
handlePaneDragEnd: () => void;
dragOverIdx: number | null;
draggingIdxRef: React.MutableRefObject<number | null>;
}
export function useWorkspacePanes(sessionId: string): UseWorkspacePanesResult {
const [panes, setPanes] = useState<WorkspacePane[]>(() => {
return loadPanes(sessionId) ?? [emptyPane()];
});
const [activePaneIdx, setActivePaneIdx] = useState(0);
const draggingIdxRef = useRef<number | null>(null);
const [dragOverIdx, setDragOverIdx] = useState<number | null>(null);
useEffect(() => {
savePanes(sessionId, panes);
}, [sessionId, panes]);
useEffect(() => {
const active = panes[activePaneIdx];
if (!active) {
clearActivePane();
return;
}
setActivePaneInfo({
sessionId,
paneId: active.id,
kind: active.kind,
activeFile: null,
});
}, [sessionId, panes, activePaneIdx]);
useEffect(() => {
return () => {
clearActivePane();
};
}, []);
const activePaneIdxRef = useRef(activePaneIdx);
activePaneIdxRef.current = activePaneIdx;
const openChatInPane = useCallback((paneIdx: number, chatId: string) => {
setPanes((prev) => {
const next = [...prev];
const pane = next[paneIdx]!;
const existing = pane.chatIds.indexOf(chatId);
if (existing >= 0) {
next[paneIdx] = { ...pane, kind: 'chat', chatId, activeChatIdx: existing };
} else {
const newIds = [...pane.chatIds, chatId];
next[paneIdx] = {
...pane,
kind: 'chat',
chatId,
chatIds: newIds,
activeChatIdx: newIds.length - 1,
};
}
return next;
});
setActivePaneIdx(paneIdx);
}, []);
const switchTab = useCallback((paneIdx: number, tabIdx: number) => {
setPanes((prev) => {
const next = [...prev];
const pane = next[paneIdx]!;
const chatId = pane.chatIds[tabIdx];
if (!chatId) return prev;
next[paneIdx] = { ...pane, chatId, activeChatIdx: tabIdx };
return next;
});
}, []);
const removeTab = useCallback((paneIdx: number, chatId: string) => {
setPanes((prev) => {
const next = [...prev];
const pane = next[paneIdx]!;
const nextIds = pane.chatIds.filter((id) => id !== chatId);
if (nextIds.length === 0) {
next[paneIdx] = { ...pane, kind: 'empty', chatId: undefined, chatIds: [], activeChatIdx: -1 };
} else {
const nextActiveIdx = Math.min(pane.activeChatIdx, nextIds.length - 1);
next[paneIdx] = {
...pane,
chatIds: nextIds,
activeChatIdx: nextActiveIdx,
chatId: nextIds[nextActiveIdx],
};
}
return next;
});
}, []);
// Keep only the right-clicked tab open in this pane.
const closeOtherTabs = useCallback((paneIdx: number, keepChatId: string) => {
setPanes((prev) => {
const next = [...prev];
const pane = next[paneIdx]!;
const keepIdx = pane.chatIds.indexOf(keepChatId);
if (keepIdx < 0) return prev;
next[paneIdx] = {
...pane,
kind: 'chat',
chatId: keepChatId,
chatIds: [keepChatId],
activeChatIdx: 0,
};
return next;
});
}, []);
// Close every tab to the right of the right-clicked one.
const closeTabsToRight = useCallback((paneIdx: number, pivotChatId: string) => {
setPanes((prev) => {
const next = [...prev];
const pane = next[paneIdx]!;
const pivotIdx = pane.chatIds.indexOf(pivotChatId);
if (pivotIdx < 0 || pivotIdx === pane.chatIds.length - 1) return prev;
const nextIds = pane.chatIds.slice(0, pivotIdx + 1);
const nextActiveIdx = Math.min(pane.activeChatIdx, nextIds.length - 1);
next[paneIdx] = {
...pane,
chatIds: nextIds,
activeChatIdx: nextActiveIdx,
chatId: nextIds[nextActiveIdx],
};
return next;
});
}, []);
// Close every tab in this pane; land on landing page.
const closeAllTabs = useCallback((paneIdx: number) => {
setPanes((prev) => {
const next = [...prev];
const pane = next[paneIdx]!;
next[paneIdx] = { ...pane, kind: 'empty', chatId: undefined, chatIds: [], activeChatIdx: -1 };
return next;
});
}, []);
const showLandingPage = useCallback((paneIdx: number) => {
setPanes((prev) => {
const next = [...prev];
const pane = next[paneIdx]!;
next[paneIdx] = { ...pane, kind: 'empty', chatId: undefined };
return next;
});
}, []);
const addSplitPane = useCallback((kind: 'chat' | 'terminal' | 'agent') => {
if (kind === 'terminal') {
toast('Terminal panes coming in BooTerm');
return;
}
if (kind === 'agent') {
toast('Agent panes coming in BooCoder');
return;
}
setPanes((prev) => {
if (prev.length >= MAX_PANES) {
toast.error(`Maximum ${MAX_PANES} panes`);
return prev;
}
const next = [...prev, emptyPane()];
setActivePaneIdx(next.length - 1);
return next;
});
}, []);
const removePane = useCallback((idx: number) => {
setPanes((prev) => {
if (prev.length <= 1) return prev;
const next = prev.filter((_, i) => i !== idx);
setActivePaneIdx((ai) => Math.min(ai, next.length - 1));
return next;
});
}, []);
// Replaces a single empty default pane with a chat pane. Used by the initial
// chat fetch to land on the most-recent open chat if no saved pane state.
const initializeFirstChatIfEmpty = useCallback((chatId: string) => {
setPanes((prev) => {
if (prev.length === 1 && prev[0]!.kind === 'empty') {
return [chatPane(chatId)];
}
return prev;
});
}, []);
const removeChatFromPanes = useCallback((chatId: string) => {
setPanes((prev) => prev.map((p) => {
const idx = p.chatIds.indexOf(chatId);
if (idx < 0) return p;
const nextIds = p.chatIds.filter((id) => id !== chatId);
if (nextIds.length === 0) {
return { ...p, kind: 'empty' as const, chatId: undefined, chatIds: [], activeChatIdx: -1 };
}
const nextActiveIdx = Math.min(p.activeChatIdx, nextIds.length - 1);
return {
...p,
chatIds: nextIds,
activeChatIdx: nextActiveIdx,
chatId: nextIds[nextActiveIdx],
};
}));
}, []);
const handlePaneDragStart = useCallback(
(idx: number) => (e: DragEvent<HTMLDivElement>) => {
draggingIdxRef.current = idx;
e.dataTransfer.effectAllowed = 'move';
e.dataTransfer.setData('text/plain', String(idx));
},
[]
);
const handlePaneDragOver = useCallback(
(idx: number) => (e: DragEvent<HTMLDivElement>) => {
if (draggingIdxRef.current === null) return;
e.preventDefault();
e.dataTransfer.dropEffect = 'move';
if (dragOverIdx !== idx) setDragOverIdx(idx);
},
[dragOverIdx]
);
const handlePaneDragLeave = useCallback(() => {
setDragOverIdx(null);
}, []);
const handlePaneDrop = useCallback(
(targetIdx: number) => (e: DragEvent<HTMLDivElement>) => {
e.preventDefault();
const fromIdx = draggingIdxRef.current;
draggingIdxRef.current = null;
setDragOverIdx(null);
if (fromIdx === null || fromIdx === targetIdx) return;
setPanes((prev) => {
const next = [...prev];
const [moved] = next.splice(fromIdx, 1);
if (!moved) return prev;
next.splice(targetIdx, 0, moved);
// Keep active selection on the same logical pane (the one being dragged).
setActivePaneIdx(targetIdx);
return next;
});
},
[]
);
const handlePaneDragEnd = useCallback(() => {
draggingIdxRef.current = null;
setDragOverIdx(null);
}, []);
return {
panes,
activePaneIdx,
setActivePaneIdx,
activePaneIdxRef,
openChatInPane,
switchTab,
removeTab,
closeOtherTabs,
closeTabsToRight,
closeAllTabs,
showLandingPage,
addSplitPane,
removePane,
removeChatFromPanes,
initializeFirstChatIfEmpty,
handlePaneDragStart,
handlePaneDragOver,
handlePaneDragLeave,
handlePaneDrop,
handlePaneDragEnd,
dragOverIdx,
draggingIdxRef,
};
}