feat: pin data model + cross-session resolver

M1 of pinned terminals (v0.17.0):
- SidebarTab.pin?: { scope: 'workspace' | 'global'; homeCwd?: string }
- setTabPin reducer (walks splits + bottomSplits + floats, idempotent)
- sanitizePersistedTab whitelist-validates pin (illegal scope drops pin, keeps tab)
- SidebarStore.getSessionStates() read-only view for the rail
- new src/client/pinned.ts: pinnedVisibleTo + collectPinnedTabs (excludes viewer's own session, stable tree order)
This commit is contained in:
HuanLinOTO
2026-08-26 18:27:32 +08:00
parent d052bd7fb2
commit 68f771e65f
4 changed files with 443 additions and 2 deletions
+100
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@@ -0,0 +1,100 @@
/**
* Cross-session pinned-terminal resolution (v0.17.0+).
*
* A pinned terminal tab lives in its HOME session's state (the only
* authoritative copy) — switching sessions never copies or projects it.
* The PinnedRail renders the tabs OTHER sessions have pinned that should
* surface in the CURRENT (viewer) session, so it needs a read-only
* resolution pass over every cached session state.
*
* Visibility rule:
*
* | pin.scope | visible when |
* |-----------|--------------|
* | `global` | any session (cwd-independent) |
* | `workspace` | `viewer.cwd === tab.pin.homeCwd` (both undefined match; viewer.cwd unknown → conservative visible) |
*
* The "viewer.cwd unknown → visible" branch is intentional: during
* hydration the session summary may carry no cwd yet, and hiding pinned
* workspace tabs on first paint would flash them away. Once the cwd
* resolves, the next store notify re-runs the resolver with the real cwd.
*
* The viewer's OWN session is excluded: its pinned tabs are already on its
* tab strip, so rendering them again in the rail would double-show. Tabs
* whose `pin` field is missing or whose `type` is not `'terminal'` are
* ignored — only terminal tabs can be pinned.
*/
import type { SidebarState, SidebarTab } from './state.ts'
/** A pinned terminal surfaced to the viewer, paired with its home session. */
export interface PinnedTabEntry {
tab: SidebarTab
homeSessionId: string
}
/** A viewer's session identity for visibility resolution. */
export interface PinnedViewer {
sessionId: string
cwd: string | undefined
}
/**
* Whether a pinned tab is visible to the viewer session. Conservative on
* unknown cwd: a `workspace` pin with no `homeCwd` is visible everywhere
* (the pin was set before the home session's cwd resolved), and a viewer
* whose cwd is unknown sees every workspace pin (avoids hydration flash).
*/
export function pinnedVisibleTo(tab: SidebarTab, viewer: PinnedViewer): boolean {
const pin = tab.pin
if (pin === undefined) return false
if (pin.scope === 'global') return true
// workspace scope
const home = pin.homeCwd
if (home === undefined) return true
if (viewer.cwd === undefined) return true
return viewer.cwd === home
}
/**
* Collect every pinned terminal visible to the viewer across ALL cached
* session states. Excludes the viewer's own session (those tabs are on its
* own strip). Order is stable: sessions in the cache's insertion order,
* tabs in tree order (splits → bottomSplits → floats) within each session
* — the order tabs were opened/pinned, so the rail never reorders between
* renders.
*/
export function collectPinnedTabs(
bySession: ReadonlyMap<string, SidebarState>,
viewer: PinnedViewer,
): PinnedTabEntry[] {
const entries: PinnedTabEntry[] = []
for (const [homeSessionId, state] of bySession) {
if (homeSessionId === viewer.sessionId) continue
collectFromTree(state.splits, homeSessionId, viewer, entries)
collectFromTree(state.bottomSplits, homeSessionId, viewer, entries)
for (const float of state.floats) {
if (float.tab.type === 'terminal' && pinnedVisibleTo(float.tab, viewer)) {
entries.push({ tab: float.tab, homeSessionId })
}
}
}
return entries
}
/** Walk one split tree depth-first, collecting visible pinned terminals. */
function collectFromTree(
node: SidebarState['splits'],
homeSessionId: string,
viewer: PinnedViewer,
out: PinnedTabEntry[],
): void {
if (node.kind === 'leaf') {
for (const tab of node.tabs) {
if (tab.type === 'terminal' && pinnedVisibleTo(tab, viewer)) {
out.push({ tab, homeSessionId })
}
}
return
}
for (const child of node.children) collectFromTree(child, homeSessionId, viewer, out)
}
+86 -1
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@@ -37,6 +37,12 @@ export interface SidebarTab {
/** Plugin-owned state (v0.12.0+): MUST be JSON-serializable — it is
* persisted with the layout and restored verbatim on reload. */
meta?: unknown
/** Pinned-terminal marker (v0.17.0+): a pinned terminal tab survives a
* session switch in its home session's state and surfaces in the
* PinnedRail of every session the scope allows. `homeCwd` is the cwd
* snapshot at pin time — a `workspace`-scoped pin is only visible to
* sessions whose cwd matches it. Absent = unpinned (legacy states). */
pin?: { scope: 'workspace' | 'global'; homeCwd?: string }
}
/** A tab group. */
@@ -541,6 +547,57 @@ export function patchTab(
return changed ? { ...state, splits, bottomSplits, floats } : state
}
/**
* Set or clear the pin marker on one open tab (v0.17.0+). A pin marker is
* structural metadata (NOT display fields like title/path), so it walks
* both split trees AND the free windows exactly like {@link patchTab} —
* the tab may live in either tree or float. Passing `null` clears the pin
* (the tab stays open in its home session); passing a `{ scope, homeCwd }`
* object sets it. An unknown tab id is a strict no-op (same reference
* returned) so a stale pin request never churns the state or rewrites
* localStorage.
* @param state - the current per-session sidebar state.
* @param tabId - the tab to pin/unpin.
* @param pin - the pin marker to set, or null to clear.
* @returns the next state (or the same reference when the tab is missing
* or the pin marker is already the requested value).
*/
export function setTabPin(
state: SidebarState,
tabId: string,
pin: { scope: 'workspace' | 'global'; homeCwd?: string } | null,
): SidebarState {
let changed = false
const apply = (tab: SidebarTab): SidebarTab => {
// Idempotent: setting the same pin (deep-equal on scope + homeCwd) is a
// no-op so re-clicking the menu item never churns the state.
if (pin === null) {
if (tab.pin === undefined) return tab
} else if (
tab.pin !== undefined
&& tab.pin.scope === pin.scope
&& tab.pin.homeCwd === pin.homeCwd
) {
return tab
}
changed = true
const { pin: _omit, ...rest } = tab
return pin === null ? rest : { ...rest, pin }
}
const walk = (node: SplitNode): SplitNode => {
if (node.kind === 'leaf') {
const tabs = node.tabs.map(tab => (tab.id === tabId ? apply(tab) : tab))
return tabs === node.tabs ? node : { ...node, tabs }
}
const children = node.children.map(walk)
return children === node.children ? node : { ...node, children }
}
const splits = walk(state.splits)
const bottomSplits = walk(state.bottomSplits)
const floats = state.floats.map(float => (float.tab.id === tabId ? { ...float, tab: apply(float.tab) } : float))
return changed ? { ...state, splits, bottomSplits, floats } : state
}
/**
* Land a tab in the active pane (or focus its existing instance by id).
* Dedup strategies (single-instance, per-path, per-change) are owned by the
@@ -1267,13 +1324,28 @@ function sanitizePersistedTab(tab: unknown): SidebarTab | 'diff' | undefined {
// `meta` is plugin-owned JSON-serializable state (v0.12.0+): the persisted
// value already went through JSON.parse, so it is inherently serializable —
// carry it through verbatim (absent on older states).
return {
const result: SidebarTab = {
id: candidate.id,
type: candidate.type,
title: candidate.title,
...(typeof candidate.path === 'string' ? { path: candidate.path } : {}),
...(candidate.meta !== undefined ? { meta: candidate.meta } : {}),
}
// `pin` (v0.17.0+): a pinned-terminal marker. Whitelist-validate the
// shape so a hand-edited / corrupted pin never crashes the rail's
// resolver: an unknown scope or a non-string homeCwd drops the pin
// silently (the tab survives, just unpinned — the legacy behavior).
const pin = (candidate as Record<string, unknown>).pin
if (pin !== null && typeof pin === 'object' && !Array.isArray(pin)) {
const pinRecord = pin as Record<string, unknown>
if (pinRecord.scope === 'workspace' || pinRecord.scope === 'global') {
const homeCwd = pinRecord.homeCwd
result.pin = homeCwd === undefined || typeof homeCwd === 'string'
? { scope: pinRecord.scope, ...(typeof homeCwd === 'string' ? { homeCwd } : {}) }
: { scope: pinRecord.scope }
}
}
return result
}
/** Validate one split-tree node (leaf or split) and rebuild it cleanly. */
@@ -1437,6 +1509,19 @@ export class SidebarStore {
return state !== undefined && tabOpenIn(state, tabId)
}
/**
* Read-only view of EVERY cached session's state (v0.17.0+). The
* PinnedRail uses this to collect pinned terminals across sessions
* without each render reading private fields. The map is the live
* `bySession` reference — callers MUST treat it as read-only (mutations
* go through {@link reduce} / {@link reduceFor}). A session that has
* never been visited in this run is absent (its pinned tabs are not
* visible until first load — accepted as YAGNI by the design).
*/
getSessionStates(): ReadonlyMap<string, SidebarState> {
return this.bySession
}
/** Apply a pure reducer (returns the next state). */
reduce(reducer: (state: SidebarState) => SidebarState): void {
const sessionId = this.snapshot.sessionId
+142
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@@ -0,0 +1,142 @@
/**
* Pinned-terminal resolver (v0.17.0) — pure functions over cached session
* states. Covers the visibility matrix (global / workspace × cwd match /
* mismatch / both undefined / viewer-only undefined) and the cross-session
* collection (multi-session, exclusion of the viewer's own session, stable
* tree order, floats).
*/
import { describe, expect, it } from 'vitest'
import {
floatTab, makeDefaultState, openTabInActivePane, setTabPin, toggleBottomPanel,
type SidebarState,
} from '../src/client/state.ts'
import { collectPinnedTabs, pinnedVisibleTo, type PinnedViewer } from '../src/client/pinned.ts'
/** A pinned terminal tab in a fresh state, opened and pinned in one go. */
function stateWithPinnedTerminal(
id: string,
pin: { scope: 'workspace' | 'global'; homeCwd?: string },
): SidebarState {
let s = makeDefaultState()
s = openTabInActivePane(s, { id, type: 'terminal', title: id })
return setTabPin(s, id, pin)
}
const viewer = (sessionId: string, cwd?: string): PinnedViewer => ({ sessionId, cwd })
describe('pinnedVisibleTo', () => {
it('returns false for an unpinned tab', () => {
const tab = { id: 't', type: 'terminal', title: 'T' }
expect(pinnedVisibleTo(tab, viewer('s', '/p'))).toBe(false)
})
it('global pin is visible to any session regardless of cwd', () => {
const tab = { id: 't', type: 'terminal', title: 'T', pin: { scope: 'global' as const } }
expect(pinnedVisibleTo(tab, viewer('s', '/other'))).toBe(true)
expect(pinnedVisibleTo(tab, viewer('s', undefined))).toBe(true)
})
it('workspace pin matches when cwds are equal', () => {
const tab = { id: 't', type: 'terminal', title: 'T', pin: { scope: 'workspace' as const, homeCwd: '/p' } }
expect(pinnedVisibleTo(tab, viewer('s', '/p'))).toBe(true)
expect(pinnedVisibleTo(tab, viewer('s', '/q'))).toBe(false)
})
it('workspace pin without homeCwd is visible everywhere (pin set before cwd resolved)', () => {
const tab = { id: 't', type: 'terminal', title: 'T', pin: { scope: 'workspace' as const } }
expect(pinnedVisibleTo(tab, viewer('s', '/anywhere'))).toBe(true)
expect(pinnedVisibleTo(tab, viewer('s', undefined))).toBe(true)
})
it('workspace pin is conservatively visible when viewer.cwd is unknown (no hydration flash)', () => {
const tab = { id: 't', type: 'terminal', title: 'T', pin: { scope: 'workspace' as const, homeCwd: '/p' } }
expect(pinnedVisibleTo(tab, viewer('s', undefined))).toBe(true)
})
it('both undefined cwds match (legacy pin + unhydrated viewer)', () => {
const tab = { id: 't', type: 'terminal', title: 'T', pin: { scope: 'workspace' as const, homeCwd: undefined } }
expect(pinnedVisibleTo(tab, viewer('s', undefined))).toBe(true)
})
})
describe('collectPinnedTabs', () => {
it('returns an empty array when no other session has pinned terminals', () => {
const bySession = new Map<string, SidebarState>([
['s1', stateWithPinnedTerminal('terminal:1', { scope: 'global' })],
])
expect(collectPinnedTabs(bySession, viewer('s1', '/p'))).toEqual([])
})
it('returns an empty array for an empty session cache', () => {
expect(collectPinnedTabs(new Map(), viewer('s1', '/p'))).toEqual([])
})
it('collects a global pin from another session', () => {
const bySession = new Map<string, SidebarState>([
['home', stateWithPinnedTerminal('terminal:1', { scope: 'global' })],
])
const entries = collectPinnedTabs(bySession, viewer('viewer', '/anywhere'))
expect(entries).toHaveLength(1)
expect(entries[0]!.tab.id).toBe('terminal:1')
expect(entries[0]!.homeSessionId).toBe('home')
})
it('collects a workspace pin only when the viewer cwd matches homeCwd', () => {
const home = stateWithPinnedTerminal('terminal:1', { scope: 'workspace', homeCwd: '/proj' })
const bySession = new Map<string, SidebarState>([['home', home]])
expect(collectPinnedTabs(bySession, viewer('viewer', '/proj'))).toHaveLength(1)
expect(collectPinnedTabs(bySession, viewer('viewer', '/elsewhere'))).toHaveLength(0)
})
it('excludes the viewer\'s own session (its pinned tabs are on its own strip)', () => {
const bySession = new Map<string, SidebarState>([
['viewer', stateWithPinnedTerminal('terminal:1', { scope: 'global' })],
['home', stateWithPinnedTerminal('terminal:2', { scope: 'global' })],
])
const entries = collectPinnedTabs(bySession, viewer('viewer', '/p'))
expect(entries.map(e => e.tab.id)).toEqual(['terminal:2'])
})
it('collects in stable tree order: splits → bottomSplits → floats', () => {
let home = makeDefaultState()
// Right tree tab first.
home = openTabInActivePane(home, { id: 'terminal:right', type: 'terminal', title: 'R' })
home = setTabPin(home, 'terminal:right', { scope: 'global' })
// Bottom tree tab second.
home = toggleBottomPanel(home)
const bottomPane = (home.bottomSplits as { id: string }).id
home = { ...home, activePane: bottomPane }
home = openTabInActivePane(home, { id: 'terminal:bottom', type: 'terminal', title: 'B' })
home = setTabPin(home, 'terminal:bottom', { scope: 'global' })
// Float last.
home = openTabInActivePane(home, { id: 'terminal:float', type: 'terminal', title: 'F' })
home = setTabPin(home, 'terminal:float', { scope: 'global' })
home = floatTab(home, 'terminal:float', 50, 50)
const bySession = new Map<string, SidebarState>([['home', home]])
const entries = collectPinnedTabs(bySession, viewer('viewer', '/p'))
expect(entries.map(e => e.tab.id)).toEqual(['terminal:right', 'terminal:bottom', 'terminal:float'])
})
it('keeps stable insertion order across multiple home sessions', () => {
const bySession = new Map<string, SidebarState>([
['homeA', stateWithPinnedTerminal('terminal:a', { scope: 'global' })],
['homeB', stateWithPinnedTerminal('terminal:b', { scope: 'global' })],
])
const entries = collectPinnedTabs(bySession, viewer('viewer', '/p'))
expect(entries.map(e => e.tab.id)).toEqual(['terminal:a', 'terminal:b'])
expect(entries.map(e => e.homeSessionId)).toEqual(['homeA', 'homeB'])
})
it('ignores unpinned terminals and non-terminal tabs in other sessions', () => {
let home = makeDefaultState()
home = openTabInActivePane(home, { id: 'terminal:unpinned', type: 'terminal', title: 'U' })
home = openTabInActivePane(home, { id: 'editor:1', type: 'editor', title: 'E', path: '/e' })
home = setTabPin(home, 'editor:1', { scope: 'global' }) // defensive: pin only targets terminals
home = openTabInActivePane(home, { id: 'terminal:pinned', type: 'terminal', title: 'P' })
home = setTabPin(home, 'terminal:pinned', { scope: 'global' })
const bySession = new Map<string, SidebarState>([['home', home]])
const entries = collectPinnedTabs(bySession, viewer('viewer', '/p'))
expect(entries.map(e => e.tab.id)).toEqual(['terminal:pinned'])
})
})
+115 -1
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@@ -4,7 +4,7 @@ import {
dockFloat, FLOAT_MIN_H, FLOAT_MIN_W, floatTab, floatWithTab, insertLeafAt, makeDefaultState,
migrateBottomTabs, moveFloat, moveTab, moveTabToEdge, openDiffTab,
openTabInActivePane, patchTab, raiseFloat, reconcileAgentTerminals, resizeFloat, resizeSplit,
resizeSplitIn, revealPaths, sanitizeState, setBottomHeight,
resizeSplitIn, revealPaths, sanitizeState, setBottomHeight, setTabPin,
splitPane, tabOpenIn, toggleBottomPanel, toggleExpanded, togglePanel,
type SidebarLeaf, type SidebarState, type SidebarTab, type SplitNode,
} from '../src/client/state.ts'
@@ -1214,6 +1214,120 @@ describe('free windows (v0.16.0)', () => {
})
})
describe('pinned terminals (v0.17.0)', () => {
// setTabPin reads neither window nor localStorage directly, but the
// pinnedTab-aware sanitize round-trip below uses JSON.parse/stringify
// only — keep this block window-less for parity with the main describe.
const state = (): SidebarState => makeDefaultState()
it('setTabPin marks a docked terminal in the right tree', () => {
let s = state()
s = openTabInActivePane(s, { id: 'terminal:1', type: 'terminal', title: 'T' })
s = setTabPin(s, 'terminal:1', { scope: 'workspace', homeCwd: '/proj' })
const tab = allLeaves(s.splits).flatMap(l => l.tabs).find(t => t.id === 'terminal:1')!
expect(tab.pin).toEqual({ scope: 'workspace', homeCwd: '/proj' })
})
it('setTabPin marks a terminal in the bottom tree and a floated terminal', () => {
let s = state()
s = toggleBottomPanel(s)
const bottomPane = (s.bottomSplits as { id: string }).id
s = { ...s, activePane: bottomPane }
s = openTabInActivePane(s, { id: 'terminal:b', type: 'terminal', title: 'B' })
s = setTabPin(s, 'terminal:b', { scope: 'global' })
const bottomTab = allLeaves(s.bottomSplits).flatMap(l => l.tabs).find(t => t.id === 'terminal:b')!
expect(bottomTab.pin).toEqual({ scope: 'global' })
// Float path: a pinned tab that is then floated keeps its pin marker.
s = floatTab(s, 'terminal:b', 50, 50)
s = setTabPin(s, 'terminal:b', { scope: 'workspace', homeCwd: '/x' })
expect(s.floats.find(f => f.tab.id === 'terminal:b')!.tab.pin).toEqual({ scope: 'workspace', homeCwd: '/x' })
})
it('setTabPin with null clears the pin marker but keeps the tab', () => {
let s = state()
s = openTabInActivePane(s, { id: 'terminal:1', type: 'terminal', title: 'T' })
s = setTabPin(s, 'terminal:1', { scope: 'global' })
s = setTabPin(s, 'terminal:1', null)
const tab = allLeaves(s.splits).flatMap(l => l.tabs).find(t => t.id === 'terminal:1')!
expect(tab.pin).toBeUndefined()
expect(tabOpenIn(s, 'terminal:1')).toBe(true)
})
it('setTabPin on an unknown tab id is a strict same-reference no-op', () => {
const s = state()
expect(setTabPin(s, 'ghost', { scope: 'global' })).toBe(s)
expect(setTabPin(s, 'ghost', null)).toBe(s)
})
it('setTabPin is idempotent: setting the same pin twice returns the same reference', () => {
let s = state()
s = openTabInActivePane(s, { id: 'terminal:1', type: 'terminal', title: 'T' })
s = setTabPin(s, 'terminal:1', { scope: 'workspace', homeCwd: '/p' })
const once = s
s = setTabPin(s, 'terminal:1', { scope: 'workspace', homeCwd: '/p' })
expect(s).toBe(once)
})
it('sanitizeState preserves a legal pin and strips an illegal scope (keeps the tab)', () => {
const g = globalThis as Record<string, unknown>
g.window = { clearTimeout: () => {}, setTimeout: () => 0, innerWidth: 1024, innerHeight: 768 }
g.localStorage = { getItem: () => null, setItem: () => {} }
try {
const legal = JSON.parse(JSON.stringify(makeDefaultState())) as {
splits: { kind: 'leaf'; id: string; tabs: SidebarTab[]; active: string | null }
}
legal.splits.tabs.push({
id: 'terminal:1', type: 'terminal', title: 'T',
pin: { scope: 'workspace', homeCwd: '/proj' },
} as SidebarTab)
legal.splits.active = 'terminal:1'
const restored = sanitizeState(legal)!
const tab = (restored.splits as { tabs: SidebarTab[] }).tabs.find(t => t.id === 'terminal:1')!
expect(tab.pin).toEqual({ scope: 'workspace', homeCwd: '/proj' })
// Illegal scope drops the pin, keeps the tab.
const illegal = JSON.parse(JSON.stringify(makeDefaultState())) as {
splits: { kind: 'leaf'; id: string; tabs: SidebarTab[]; active: string | null }
}
illegal.splits.tabs.push({
id: 'terminal:2', type: 'terminal', title: 'T2',
pin: { scope: 'bogus', homeCwd: '/x' },
} as unknown as SidebarTab)
illegal.splits.active = 'terminal:2'
const cleaned = sanitizeState(illegal)!
const tab2 = (cleaned.splits as { tabs: SidebarTab[] }).tabs.find(t => t.id === 'terminal:2')!
expect(tab2.pin).toBeUndefined()
expect(tab2.id).toBe('terminal:2')
// Non-string homeCwd drops homeCwd but keeps a global pin.
const weirdHome = JSON.parse(JSON.stringify(makeDefaultState())) as {
splits: { kind: 'leaf'; id: string; tabs: SidebarTab[]; active: string | null }
}
weirdHome.splits.tabs.push({
id: 'terminal:3', type: 'terminal', title: 'T3',
pin: { scope: 'global', homeCwd: 42 },
} as unknown as SidebarTab)
weirdHome.splits.active = 'terminal:3'
const weird = sanitizeState(weirdHome)!
const tab3 = (weird.splits as { tabs: SidebarTab[] }).tabs.find(t => t.id === 'terminal:3')!
expect(tab3.pin).toEqual({ scope: 'global' })
// Older state without pin loads unchanged.
const legacy = JSON.parse(JSON.stringify(makeDefaultState())) as {
splits: { kind: 'leaf'; id: string; tabs: SidebarTab[]; active: string | null }
}
legacy.splits.tabs.push({ id: 'terminal:4', type: 'terminal', title: 'T4' } as SidebarTab)
legacy.splits.active = 'terminal:4'
const legacyRestored = sanitizeState(legacy)!
const tab4 = (legacyRestored.splits as { tabs: SidebarTab[] }).tabs.find(t => t.id === 'terminal:4')!
expect(tab4.pin).toBeUndefined()
} finally {
delete g.window
delete g.localStorage
}
})
})
describe('URL reset escape hatch (issue #369)', () => {
// Same browser-global stubs as the v0.12.0 block above; loadState reads
// window.location.search (reset param) and localStorage (persisted state).