feat: refresh and edit browser instances

2026-07-25 16:36:26 +08:00
parent 1a453cf8f0
commit be9292c376
7 changed files with 946 additions and 51 deletions
@@ -6,10 +6,13 @@ import (
 	"fmt"
 	"image"
 	"image/color"
+	"net/url"
+	"path/filepath"
 	"strconv"
 	"strings"

 	"chub/internal/domain"
+	"gioui.org/io/key"
 	"gioui.org/layout"
 	"gioui.org/op/clip"
 	"gioui.org/op/paint"
@@ -38,6 +41,7 @@ const (

 var (
 	instanceStartIcon  = mustIcon(icons.AVPlayArrow)
+	instanceEditIcon   = mustIcon(icons.EditorModeEdit)
 	instanceDeleteIcon = mustIcon(icons.ActionDelete)
 )

@@ -64,6 +68,23 @@ type InstanceStartOutcome struct {

 type InstanceStarter func(context.Context, InstanceRow, SettingsState) (InstanceStartOutcome, error)

+// InstanceRefreshResult carries a read-only status check for one configured
+// instance. The UI applies it only while the row's editable fields still match
+// the snapshot passed to the refresher.
+type InstanceRefreshResult struct {
+	ID              string
+	Status          string
+	PID             int
+	RemoteDebugPort int
+	OccupancySource string
+	Message         string
+}
+
+// InstanceRefresher performs background status checks only for the supplied
+// configured instances. It must not enumerate or take control of unrelated
+// browser processes.
+type InstanceRefresher func(context.Context, []InstanceRow) ([]InstanceRefreshResult, error)
+
 type instanceStartState struct {
 	request uint64
 	running bool
@@ -76,6 +97,18 @@ type instanceStartResult struct {
 	err     error
 }

+type instanceRefreshState struct {
+	request uint64
+	running bool
+}
+
+type instanceRefreshResult struct {
+	request   uint64
+	snapshots map[string]string
+	results   []InstanceRefreshResult
+	err       error
+}
+
 type pathSearchState struct {
 	request uint64
 	cancel  context.CancelFunc
@@ -93,6 +126,7 @@ type directoryPickState struct {
 	request uint64
 	cancel  context.CancelFunc
 	running bool
+	target  directoryPickTarget
 }

 type directoryPickResult struct {
@@ -101,8 +135,15 @@ type directoryPickResult struct {
 	err     error
 }

-// InstanceRow is the read-only view model used by the first Gio shell.
-// Runtime data will replace these fixtures when the application service is wired.
+type directoryPickTarget uint8
+
+const (
+	directoryPickCreate directoryPickTarget = iota
+	directoryPickEdit
+)
+
+// InstanceRow is the Gio view model for one configured browser instance.
+// Runtime fields are refreshed independently and are never saved by the edit form.
 type InstanceRow struct {
 	ID              string
 	Name            string
@@ -133,6 +174,7 @@ type Shell struct {
 	instancesClick  widget.Clickable
 	settingsClick   widget.Clickable
 	newClick        widget.Clickable
+	refreshClick    widget.Clickable
 	startClick      widget.Clickable
 	createClick     widget.Clickable
 	backClick       widget.Clickable
@@ -148,34 +190,59 @@ type Shell struct {
 	saveClick       widget.Clickable
 	cancelClick     widget.Clickable

-	chromePath      widget.Editor
-	edgePath        widget.Editor
-	dataDir         widget.Editor
-	logDir          widget.Editor
-	remoteDebugPort widget.Editor
-	closeOnExit     widget.Bool
-	instanceName    widget.Editor
-	instanceDir     widget.Editor
-	instanceURL     widget.Editor
-	browserKind     widget.Enum
-	pathFeedback    string
-	formFeedback    string
+	chromePath         widget.Editor
+	edgePath           widget.Editor
+	dataDir            widget.Editor
+	logDir             widget.Editor
+	remoteDebugPort    widget.Editor
+	closeOnExit        widget.Bool
+	instanceName       widget.Editor
+	instanceDir        widget.Editor
+	instanceURL        widget.Editor
+	browserKind        widget.Enum
+	editName           widget.Editor
+	editDir            widget.Editor
+	editURL            widget.Editor
+	editPort           widget.Editor
+	editBrowserKind    widget.Enum
+	editDirPick        widget.Clickable
+	editSave           widget.Clickable
+	editCancel         widget.Clickable
+	editBlocker        widget.Clickable
+	editDiscardBlocker widget.Clickable
+	editDiscardSave    widget.Clickable
+	editDiscardDrop    widget.Clickable
+	editDiscardStay    widget.Clickable
+	pathFeedback       string
+	formFeedback       string
+	editFeedback       string

 	list               widget.List
 	rows               []InstanceRow
+	selectedInstanceID string
+	rowClicks          map[string]*widget.Clickable
 	startClicks        map[string]*widget.Clickable
+	editClicks         map[string]*widget.Clickable
 	deleteClicks       map[string]*widget.Clickable
 	deleteConfirm      widget.Clickable
 	deleteCancel       widget.Clickable
 	deleteBlocker      widget.Clickable
 	startStates        map[string]*instanceStartState
 	startResults       chan instanceStartResult
+	refreshClickState  instanceRefreshState
+	refreshResults     chan instanceRefreshResult
 	nextInstance       uint64
 	instanceFeedback   string
 	pendingDeleteID    string
+	editingID          string
+	editOriginal       InstanceRow
+	pendingEditDiscard bool
+	editFocusPending   bool
+	focusRestoreID     string
 	onSave             func(SettingsState)
 	onInstancesChanged func([]InstanceRow)
 	instanceStarter    InstanceStarter
+	instanceRefresher  InstanceRefresher
 	pathSearcher       PathSearcher
 	invalidate         func()
 	searches           map[PathField]*pathSearchState
@@ -196,7 +263,7 @@ func NewShell(theme *material.Theme) *Shell {
 		PathEdgeExecutable:   {},
 		PathDefaultUserData:  {},
 		PathLogDirectory:     {},
-	}, startClicks: make(map[string]*widget.Clickable), deleteClicks: make(map[string]*widget.Clickable), startStates: make(map[string]*instanceStartState), nextInstance: 4, startResults: make(chan instanceStartResult, 8), searchResults: make(chan pathSearchResult, 8), directoryResults: make(chan directoryPickResult, 1)}
+	}, rowClicks: make(map[string]*widget.Clickable), startClicks: make(map[string]*widget.Clickable), editClicks: make(map[string]*widget.Clickable), deleteClicks: make(map[string]*widget.Clickable), startStates: make(map[string]*instanceStartState), nextInstance: 4, startResults: make(chan instanceStartResult, 8), refreshResults: make(chan instanceRefreshResult, 1), searchResults: make(chan pathSearchResult, 8), directoryResults: make(chan directoryPickResult, 1)}
 	s.chromePath.SetText(`C:\Program Files\Google\Chrome\Application\chrome.exe`)
 	s.edgePath.SetText(`C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe`)
 	s.dataDir.SetText(`C:\Users\Public\chub\profiles`)
@@ -204,6 +271,8 @@ func NewShell(theme *material.Theme) *Shell {
 	s.remoteDebugPort.SetText(strconv.Itoa(domain.DefaultRemoteDebugPort))
 	s.closeOnExit.Value = true
 	s.browserKind.Value = "chrome"
+	s.editBrowserKind.Value = "chrome"
+	s.editPort.ReadOnly = true
 	s.list.Axis = layout.Vertical
 	return s
 }
@@ -216,6 +285,9 @@ func (s *Shell) SetInstances(rows []InstanceRow) {
 			s.rows[i].ID = fmt.Sprintf("restored-%d", s.nextInstance)
 		}
 	}
+	if s.selectedInstanceID == "" && len(s.rows) > 0 {
+		s.selectedInstanceID = s.rows[0].ID
+	}
 }

 func (s *Shell) SetSettings(value SettingsState) {
@@ -240,6 +312,11 @@ func (s *Shell) OnStartInstance(starter InstanceStarter, invalidate func()) {
 	s.invalidate = invalidate
 }

+func (s *Shell) OnRefreshInstances(refresher InstanceRefresher, invalidate func()) {
+	s.instanceRefresher = refresher
+	s.invalidate = invalidate
+}
+
 func (s *Shell) OnPathSearch(searcher PathSearcher, invalidate func()) {
 	s.pathSearcher = searcher
 	s.invalidate = invalidate
@@ -254,8 +331,12 @@ func (s *Shell) Layout(gtx layout.Context) layout.Dimensions {
 	s.consumeSearchResults()
 	s.consumeDirectoryResults()
 	s.consumeStartResults()
+	s.consumeRefreshResults()
+	s.consumeKeyboard(gtx)
 	if s.pendingDeleteID != "" {
 		s.consumeDeleteConfirmation(gtx)
+	} else if s.editingID != "" {
+		s.consumeEditControls(gtx)
 	} else {
 		s.consumeControls(gtx)
 	}
@@ -267,12 +348,25 @@ func (s *Shell) Layout(gtx layout.Context) layout.Dimensions {
 			}),
 		)
 	}
-	if s.pendingDeleteID == "" {
+	if s.pendingDeleteID == "" && s.editingID == "" {
 		return mainLayout(gtx)
 	}
+	if s.pendingDeleteID != "" {
+		return layout.Stack{Alignment: layout.Center}.Layout(gtx,
+			layout.Expanded(mainLayout),
+			layout.Stacked(s.deleteConfirmation),
+		)
+	}
+	if s.pendingEditDiscard {
+		return layout.Stack{Alignment: layout.Center}.Layout(gtx,
+			layout.Expanded(mainLayout),
+			layout.Stacked(s.editDialog),
+			layout.Stacked(s.editDiscardConfirmation),
+		)
+	}
 	return layout.Stack{Alignment: layout.Center}.Layout(gtx,
 		layout.Expanded(mainLayout),
-		layout.Stacked(s.deleteConfirmation),
+		layout.Stacked(s.editDialog),
 	)
 }

@@ -286,6 +380,9 @@ func (s *Shell) consumeControls(gtx layout.Context) {
 	for s.newClick.Clicked(gtx) {
 		s.page = pageCreate
 	}
+	for s.refreshClick.Clicked(gtx) {
+		s.requestRefresh()
+	}
 	for s.createClick.Clicked(gtx) {
 		s.createInstanceFromForm()
 	}
@@ -296,9 +393,19 @@ func (s *Shell) consumeControls(gtx layout.Context) {
 		s.page = pageInstances
 	}
 	for _, row := range s.rows {
+		s.consumeRowKeyboard(gtx, row.ID)
+		for click, ok := s.rowClickFor(row.ID).Update(gtx); ok; click, ok = s.rowClickFor(row.ID).Update(gtx) {
+			s.selectedInstanceID = row.ID
+			if click.NumClicks >= 2 {
+				s.beginEdit(row.ID)
+			}
+		}
 		for s.startClickFor(row.ID).Clicked(gtx) {
 			s.requestStart(row.ID)
 		}
+		for s.editClickFor(row.ID).Clicked(gtx) {
+			s.beginEdit(row.ID)
+		}
 	}
 	for _, row := range append([]InstanceRow(nil), s.rows...) {
 		for s.deleteClickFor(row.ID).Clicked(gtx) {
@@ -307,6 +414,195 @@ func (s *Shell) consumeControls(gtx layout.Context) {
 	}
 }

+func (s *Shell) consumeKeyboard(gtx layout.Context) {
+	for {
+		event, ok := gtx.Event(
+			key.Filter{Name: key.NameEscape},
+			key.Filter{Name: key.NameF5},
+		)
+		if !ok {
+			return
+		}
+		keyEvent, ok := event.(key.Event)
+		if !ok || keyEvent.State != key.Press {
+			continue
+		}
+		switch keyEvent.Name {
+		case key.NameEscape:
+			if s.pendingEditDiscard {
+				s.pendingEditDiscard = false
+			} else if s.editingID != "" {
+				s.cancelEdit()
+			}
+		case key.NameF5:
+			if s.pendingDeleteID == "" && s.editingID == "" && s.page == pageInstances {
+				s.requestRefresh()
+			}
+		}
+	}
+}
+
+func (s *Shell) consumeRowKeyboard(gtx layout.Context, id string) {
+	click := s.rowClickFor(id)
+	for {
+		event, ok := gtx.Event(
+			key.Filter{Focus: click, Name: key.NameReturn},
+			key.Filter{Focus: click, Name: key.NameEnter},
+		)
+		if !ok {
+			return
+		}
+		keyEvent, ok := event.(key.Event)
+		if !ok || keyEvent.State != key.Release {
+			continue
+		}
+		s.selectedInstanceID = id
+		s.beginEdit(id)
+	}
+}
+
+func (s *Shell) consumeEditControls(gtx layout.Context) {
+	for s.editBlocker.Clicked(gtx) {
+	}
+	if s.pendingEditDiscard {
+		for s.editDiscardBlocker.Clicked(gtx) {
+		}
+		for s.editDiscardStay.Clicked(gtx) {
+			s.pendingEditDiscard = false
+		}
+		for s.editDiscardDrop.Clicked(gtx) {
+			s.closeEdit("已放弃未保存的实例修改。")
+		}
+		for s.editDiscardSave.Clicked(gtx) {
+			s.saveEdit()
+		}
+		return
+	}
+	for s.editDirPick.Clicked(gtx) {
+		s.chooseDirectory(directoryPickEdit)
+	}
+	for s.editCancel.Clicked(gtx) {
+		s.cancelEdit()
+	}
+	for s.editSave.Clicked(gtx) {
+		s.saveEdit()
+	}
+}
+
+func (s *Shell) beginEdit(id string) {
+	row, ok := s.instanceRow(id)
+	if !ok {
+		s.instanceFeedback = "找不到要编辑的实例。"
+		return
+	}
+	s.selectedInstanceID = id
+	s.editingID = id
+	s.editOriginal = row
+	s.editName.SetText(row.Name)
+	s.editDir.SetText(row.UserDataDir)
+	s.editURL.SetText(row.TargetURL)
+	s.editPort.SetText(remoteDebugPortText(row.RemoteDebugPort))
+	if strings.EqualFold(row.Browser, "Edge") {
+		s.editBrowserKind.Value = "edge"
+	} else {
+		s.editBrowserKind.Value = "chrome"
+	}
+	s.editFeedback = ""
+	s.pendingEditDiscard = false
+	s.editFocusPending = true
+}
+
+func (s *Shell) editLocked(row InstanceRow) bool {
+	switch row.Status {
+	case "启动中", "运行中", "运行中（调试不可用）", "外部已关联":
+		return true
+	default:
+		return false
+	}
+}
+
+func (s *Shell) editIsDirty() bool {
+	if s.editingID == "" {
+		return false
+	}
+	if strings.TrimSpace(s.editName.Text()) != s.editOriginal.Name || strings.TrimSpace(s.editURL.Text()) != s.editOriginal.TargetURL {
+		return true
+	}
+	if s.editLocked(s.editOriginal) {
+		return false
+	}
+	return strings.TrimSpace(s.editDir.Text()) != s.editOriginal.UserDataDir || browserDisplay(s.editBrowserKind.Value) != s.editOriginal.Browser
+}
+
+func (s *Shell) cancelEdit() {
+	if s.editingID == "" {
+		return
+	}
+	if s.editIsDirty() {
+		s.pendingEditDiscard = true
+		return
+	}
+	s.closeEdit("已取消实例编辑。")
+}
+
+func (s *Shell) saveEdit() {
+	row, ok := s.instanceRow(s.editingID)
+	if !ok {
+		s.closeEdit("要编辑的实例已不存在。")
+		return
+	}
+	name := strings.TrimSpace(s.editName.Text())
+	if name == "" {
+		s.editFeedback = "请输入实例名称。"
+		return
+	}
+	targetURL, err := normalizeTargetURL(s.editURL.Text())
+	if err != nil {
+		s.editFeedback = err.Error()
+		return
+	}
+	locked := s.editLocked(row)
+	if !locked {
+		userDataDir := strings.TrimSpace(s.editDir.Text())
+		if userDataDir == "" || !filepath.IsAbs(userDataDir) {
+			s.editFeedback = "User Data Dir 必须是绝对路径。"
+			return
+		}
+		row.UserDataDir = filepath.Clean(userDataDir)
+		row.Browser = browserDisplay(s.editBrowserKind.Value)
+	}
+	row.Name = name
+	row.TargetURL = targetURL
+	if !s.replaceInstanceRow(row) {
+		s.closeEdit("要编辑的实例已不存在。")
+		return
+	}
+	s.notifyInstancesChanged()
+	s.closeEdit(fmt.Sprintf("已保存实例“%s”。", row.Name))
+}
+
+func normalizeTargetURL(value string) (string, error) {
+	value = strings.TrimSpace(value)
+	if value == "" {
+		return "", nil
+	}
+	parsed, err := url.ParseRequestURI(value)
+	if err != nil || parsed == nil || (parsed.Scheme != "http" && parsed.Scheme != "https") || parsed.Host == "" || parsed.User != nil {
+		return "", errors.New("启动 URL 必须是无认证信息的 http/https 地址。")
+	}
+	return value, nil
+}
+
+func (s *Shell) closeEdit(feedback string) {
+	id := s.editingID
+	s.editingID = ""
+	s.pendingEditDiscard = false
+	s.editFeedback = ""
+	s.editFocusPending = false
+	s.focusRestoreID = id
+	s.instanceFeedback = feedback
+}
+
 func (s *Shell) sidebar(gtx layout.Context) layout.Dimensions {
 	return layout.Inset{Top: unit.Dp(24), Left: unit.Dp(16), Right: unit.Dp(16)}.Layout(gtx, func(gtx layout.Context) layout.Dimensions {
 		return layout.Flex{Axis: layout.Vertical}.Layout(gtx,
@@ -343,7 +639,7 @@ func (s *Shell) instances(gtx layout.Context) layout.Dimensions {
 		layout.Rigid(material.H4(s.theme, "实例").Layout),
 		layout.Rigid(material.Body1(s.theme, "统一查看、启动和管理 Chrome / Edge 浏览器进程").Layout),
 		layout.Rigid(layout.Spacer{Height: unit.Dp(18)}.Layout),
-		layout.Rigid(material.Button(s.theme, &s.newClick, "新建实例").Layout),
+		layout.Rigid(s.instanceCommands),
 		layout.Rigid(layout.Spacer{Height: unit.Dp(16)}.Layout),
 		layout.Flexed(1, s.instanceTable),
 		layout.Rigid(layout.Spacer{Height: unit.Dp(8)}.Layout),
@@ -351,6 +647,36 @@ func (s *Shell) instances(gtx layout.Context) layout.Dimensions {
 	)
 }

+func (s *Shell) instanceCommands(gtx layout.Context) layout.Dimensions {
+	newButton := func(gtx layout.Context) layout.Dimensions {
+		return material.Button(s.theme, &s.newClick, "新建实例").Layout(gtx)
+	}
+	refreshButton := func(gtx layout.Context) layout.Dimensions {
+		label := "刷新实例状态"
+		buttonGtx := gtx
+		if s.refreshClickState.running {
+			label = "刷新中…"
+			buttonGtx = gtx.Disabled()
+		}
+		style := material.Button(s.theme, &s.refreshClick, label)
+		style.Background = color.NRGBA{R: 230, G: 232, B: 235, A: 255}
+		style.Color = s.theme.Palette.Fg
+		return style.Layout(buttonGtx)
+	}
+	if gtx.Constraints.Max.X <= gtx.Dp(640) {
+		return layout.Flex{Axis: layout.Vertical}.Layout(gtx,
+			layout.Rigid(newButton),
+			layout.Rigid(layout.Spacer{Height: unit.Dp(8)}.Layout),
+			layout.Rigid(refreshButton),
+		)
+	}
+	return layout.Flex{Axis: layout.Horizontal}.Layout(gtx,
+		layout.Flexed(1, newButton),
+		layout.Rigid(layout.Spacer{Width: unit.Dp(8)}.Layout),
+		layout.Flexed(1, refreshButton),
+	)
+}
+
 func (s *Shell) instanceTable(gtx layout.Context) layout.Dimensions {
 	return layout.Background{}.Layout(gtx,
 		func(gtx layout.Context) layout.Dimensions {
@@ -373,16 +699,7 @@ func (s *Shell) instanceTable(gtx layout.Context) layout.Dimensions {
 					layout.Flexed(1, func(gtx layout.Context) layout.Dimensions {
 						return material.List(s.theme, &s.list).Layout(gtx, len(s.rows), func(gtx layout.Context, i int) layout.Dimensions {
 							row := s.rows[i]
-							return layout.Inset{Bottom: unit.Dp(8)}.Layout(gtx, func(gtx layout.Context) layout.Dimensions {
-								return layout.Flex{Alignment: layout.Middle}.Layout(gtx,
-									layout.Flexed(instanceNameColumnWeight, material.Body1(s.theme, row.Name).Layout),
-									layout.Flexed(instanceBrowserColumnWeight, material.Body2(s.theme, row.Browser).Layout),
-									layout.Flexed(instanceDirectoryColumnWeight, pathCell(s.theme, row.UserDataDir)),
-									layout.Flexed(instancePortColumnWeight, remoteDebugPortCell(s.theme, row.RemoteDebugPort)),
-									layout.Flexed(instanceStatusColumnWeight, statusLabel(s.theme, row.Status)),
-									layout.Flexed(instanceActionColumnWeight, s.instanceActionButtons(row)),
-								)
-							})
+							return layout.Inset{Bottom: unit.Dp(8)}.Layout(gtx, s.instanceListRow(row))
 						})
 					}),
 				)
@@ -391,6 +708,41 @@ func (s *Shell) instanceTable(gtx layout.Context) layout.Dimensions {
 	)
 }

+func (s *Shell) instanceListRow(row InstanceRow) layout.Widget {
+	return func(gtx layout.Context) layout.Dimensions {
+		return layout.Background{}.Layout(gtx,
+			func(gtx layout.Context) layout.Dimensions {
+				if s.selectedInstanceID == row.ID {
+					rect := image.Rectangle{Max: gtx.Constraints.Min}
+					paint.FillShape(gtx.Ops, color.NRGBA{R: 235, G: 242, B: 255, A: 255}, clip.UniformRRect(rect, gtx.Dp(6)).Op(gtx.Ops))
+				}
+				return layout.Dimensions{Size: gtx.Constraints.Min}
+			},
+			func(gtx layout.Context) layout.Dimensions {
+				dims := layout.Flex{Alignment: layout.Middle}.Layout(gtx,
+					layout.Flexed(100-instanceActionColumnWeight, func(gtx layout.Context) layout.Dimensions {
+						return s.rowClickFor(row.ID).Layout(gtx, func(gtx layout.Context) layout.Dimensions {
+							return layout.Flex{Alignment: layout.Middle}.Layout(gtx,
+								layout.Flexed(instanceNameColumnWeight, material.Body1(s.theme, row.Name).Layout),
+								layout.Flexed(instanceBrowserColumnWeight, material.Body2(s.theme, row.Browser).Layout),
+								layout.Flexed(instanceDirectoryColumnWeight, pathCell(s.theme, row.UserDataDir)),
+								layout.Flexed(instancePortColumnWeight, remoteDebugPortCell(s.theme, row.RemoteDebugPort)),
+								layout.Flexed(instanceStatusColumnWeight, statusLabel(s.theme, row.Status)),
+							)
+						})
+					}),
+					layout.Flexed(instanceActionColumnWeight, s.instanceActionButtons(row)),
+				)
+				if s.focusRestoreID == row.ID {
+					gtx.Execute(key.FocusCmd{Tag: s.rowClickFor(row.ID)})
+					s.focusRestoreID = ""
+				}
+				return dims
+			},
+		)
+	}
+}
+
 func (s *Shell) instanceHeader(gtx layout.Context) layout.Dimensions {
 	return layout.Background{}.Layout(gtx,
 		func(gtx layout.Context) layout.Dimensions {
@@ -425,11 +777,14 @@ func pathCell(theme *material.Theme, path string) layout.Widget {
 }

 func remoteDebugPortCell(theme *material.Theme, port int) layout.Widget {
-	label := "—"
+	return material.Body2(theme, remoteDebugPortText(port)).Layout
+}
+
+func remoteDebugPortText(port int) string {
 	if port > 0 {
-		label = strconv.Itoa(port)
+		return strconv.Itoa(port)
 	}
-	return material.Body2(theme, label).Layout
+	return "—"
 }

 func (s *Shell) instanceActionButtons(row InstanceRow) layout.Widget {
@@ -440,6 +795,8 @@ func (s *Shell) instanceActionButtons(row InstanceRow) layout.Widget {
 				actionLabel = "重新检测 " + row.Name
 			}
 			return layout.Flex{Alignment: layout.Middle}.Layout(gtx,
+				layout.Rigid(s.instanceIconButton(s.editClickFor(row.ID), instanceEditIcon, "编辑 "+row.Name, s.theme.Palette.ContrastBg)),
+				layout.Rigid(layout.Spacer{Width: unit.Dp(2)}.Layout),
 				layout.Rigid(s.instanceIconButton(s.startClickFor(row.ID), instanceStartIcon, actionLabel, s.theme.Palette.ContrastBg)),
 				layout.Rigid(layout.Spacer{Width: unit.Dp(4)}.Layout),
 				layout.Rigid(s.instanceIconButton(s.deleteClickFor(row.ID), instanceDeleteIcon, "删除 "+row.Name, color.NRGBA{R: 188, G: 51, B: 51, A: 255})),
@@ -451,14 +808,179 @@ func (s *Shell) instanceActionButtons(row InstanceRow) layout.Widget {
 func (s *Shell) instanceIconButton(click *widget.Clickable, icon *widget.Icon, description string, iconColor color.NRGBA) layout.Widget {
 	return func(gtx layout.Context) layout.Dimensions {
 		style := material.IconButton(s.theme, click, icon, description)
-		style.Size = unit.Dp(18)
-		style.Inset = layout.UniformInset(unit.Dp(7))
+		style.Size = unit.Dp(16)
+		style.Inset = layout.UniformInset(unit.Dp(5))
 		style.Background = color.NRGBA{}
 		style.Color = iconColor
 		return style.Layout(gtx)
 	}
 }

+func (s *Shell) editDialog(gtx layout.Context) layout.Dimensions {
+	row, ok := s.instanceRow(s.editingID)
+	if !ok {
+		s.closeEdit("要编辑的实例已不存在。")
+		return layout.Dimensions{}
+	}
+	gtx.Constraints.Min = gtx.Constraints.Max
+	return s.editBlocker.Layout(gtx, func(gtx layout.Context) layout.Dimensions {
+		defer clip.Rect{Max: gtx.Constraints.Min}.Push(gtx.Ops).Pop()
+		paint.Fill(gtx.Ops, color.NRGBA{R: 0, G: 0, B: 0, A: 92})
+		return layout.Center.Layout(gtx, s.editDialogCard(row))
+	})
+}
+
+func (s *Shell) editDialogCard(row InstanceRow) layout.Widget {
+	return func(gtx layout.Context) layout.Dimensions {
+		if maxWidth := gtx.Dp(560); gtx.Constraints.Max.X > maxWidth {
+			gtx.Constraints.Max.X = maxWidth
+		}
+		return layout.Background{}.Layout(gtx,
+			func(gtx layout.Context) layout.Dimensions {
+				rect := image.Rectangle{Max: gtx.Constraints.Min}
+				defer clip.UniformRRect(rect, gtx.Dp(8)).Push(gtx.Ops).Pop()
+				paint.Fill(gtx.Ops, s.theme.Palette.Bg)
+				return layout.Dimensions{Size: gtx.Constraints.Min}
+			},
+			func(gtx layout.Context) layout.Dimensions {
+				return layout.Inset{Top: unit.Dp(20), Right: unit.Dp(24), Bottom: unit.Dp(20), Left: unit.Dp(24)}.Layout(gtx, func(gtx layout.Context) layout.Dimensions {
+					locked := s.editLocked(row)
+					dims := layout.Flex{Axis: layout.Vertical}.Layout(gtx,
+						layout.Rigid(material.H6(s.theme, "编辑实例").Layout),
+						layout.Rigid(layout.Spacer{Height: unit.Dp(4)}.Layout),
+						layout.Rigid(material.Caption(s.theme, "修改下次启动时使用的保存配置。").Layout),
+						layout.Rigid(layout.Spacer{Height: unit.Dp(14)}.Layout),
+						layout.Rigid(s.formField("实例名称", "用于在实例列表中识别此浏览器环境", &s.editName)),
+						layout.Rigid(layout.Spacer{Height: unit.Dp(10)}.Layout),
+						layout.Rigid(func(gtx layout.Context) layout.Dimensions { return s.editBrowserField(gtx, locked) }),
+						layout.Rigid(layout.Spacer{Height: unit.Dp(10)}.Layout),
+						layout.Rigid(func(gtx layout.Context) layout.Dimensions { return s.editDirectoryField(gtx, locked) }),
+						layout.Rigid(layout.Spacer{Height: unit.Dp(10)}.Layout),
+						layout.Rigid(s.formField("启动 URL（可选）", "仅支持 http/https；留空时启动浏览器默认页", &s.editURL)),
+						layout.Rigid(layout.Spacer{Height: unit.Dp(10)}.Layout),
+						layout.Rigid(s.formField("当前调试端口", "运行时由全局起始端口分配，此处只读", &s.editPort)),
+						layout.Rigid(layout.Spacer{Height: unit.Dp(6)}.Layout),
+						layout.Rigid(statusLabel(s.theme, row.Status)),
+						layout.Rigid(layout.Spacer{Height: unit.Dp(6)}.Layout),
+						layout.Rigid(s.editFeedbackLabel(locked)),
+						layout.Rigid(layout.Spacer{Height: unit.Dp(16)}.Layout),
+						layout.Rigid(s.editActions),
+					)
+					if s.editFocusPending {
+						gtx.Execute(key.FocusCmd{Tag: &s.editName})
+						s.editFocusPending = false
+					}
+					return dims
+				})
+			},
+		)
+	}
+}
+
+func (s *Shell) editBrowserField(gtx layout.Context, locked bool) layout.Dimensions {
+	buttonGtx := gtx
+	if locked {
+		buttonGtx = gtx.Disabled()
+	}
+	return layout.Flex{Axis: layout.Vertical}.Layout(gtx,
+		layout.Rigid(material.Body2(s.theme, "浏览器类型").Layout),
+		layout.Rigid(material.Caption(s.theme, "Chrome 和 Edge 使用各自的启动定义").Layout),
+		layout.Rigid(layout.Spacer{Height: unit.Dp(4)}.Layout),
+		layout.Rigid(func(gtx layout.Context) layout.Dimensions {
+			return layout.Flex{Alignment: layout.Middle}.Layout(buttonGtx,
+				layout.Rigid(material.RadioButton(s.theme, &s.editBrowserKind, "chrome", "Chrome").Layout),
+				layout.Rigid(layout.Spacer{Width: unit.Dp(8)}.Layout),
+				layout.Rigid(material.RadioButton(s.theme, &s.editBrowserKind, "edge", "Edge").Layout),
+			)
+		}),
+	)
+}
+
+func (s *Shell) editDirectoryField(gtx layout.Context, locked bool) layout.Dimensions {
+	s.editDir.ReadOnly = locked
+	buttonGtx := gtx
+	if locked {
+		buttonGtx = gtx.Disabled()
+	}
+	return layout.Flex{Axis: layout.Vertical}.Layout(gtx,
+		layout.Rigid(material.Body2(s.theme, "User Data Dir").Layout),
+		layout.Rigid(material.Caption(s.theme, "浏览器独立数据目录；必须是绝对路径").Layout),
+		layout.Rigid(layout.Spacer{Height: unit.Dp(4)}.Layout),
+		layout.Rigid(func(gtx layout.Context) layout.Dimensions {
+			return layout.Flex{Alignment: layout.Middle}.Layout(gtx,
+				layout.Flexed(1, material.Editor(s.theme, &s.editDir, "请输入或粘贴绝对路径").Layout),
+				layout.Rigid(layout.Spacer{Width: unit.Dp(8)}.Layout),
+				layout.Rigid(func(layout.Context) layout.Dimensions {
+					return material.Button(s.theme, &s.editDirPick, "选择路径").Layout(buttonGtx)
+				}),
+			)
+		}),
+	)
+}
+
+func (s *Shell) editFeedbackLabel(locked bool) layout.Widget {
+	label := s.editFeedback
+	if label == "" && locked {
+		label = "运行中或外部关联实例的浏览器类型和 User Data Dir 已锁定。"
+	}
+	return material.Caption(s.theme, label).Layout
+}
+
+func (s *Shell) editActions(gtx layout.Context) layout.Dimensions {
+	return layout.Flex{Alignment: layout.Middle}.Layout(gtx,
+		layout.Rigid(func(gtx layout.Context) layout.Dimensions {
+			style := material.Button(s.theme, &s.editCancel, "取消")
+			style.Background = color.NRGBA{R: 230, G: 232, B: 235, A: 255}
+			style.Color = s.theme.Palette.Fg
+			return style.Layout(gtx)
+		}),
+		layout.Rigid(layout.Spacer{Width: unit.Dp(8)}.Layout),
+		layout.Rigid(material.Button(s.theme, &s.editSave, "保存更改").Layout),
+	)
+}
+
+func (s *Shell) editDiscardConfirmation(gtx layout.Context) layout.Dimensions {
+	gtx.Constraints.Min = gtx.Constraints.Max
+	return s.editDiscardBlocker.Layout(gtx, func(gtx layout.Context) layout.Dimensions {
+		defer clip.Rect{Max: gtx.Constraints.Min}.Push(gtx.Ops).Pop()
+		paint.Fill(gtx.Ops, color.NRGBA{R: 0, G: 0, B: 0, A: 110})
+		return layout.Center.Layout(gtx, s.editDiscardCard)
+	})
+}
+
+func (s *Shell) editDiscardCard(gtx layout.Context) layout.Dimensions {
+	if maxWidth := gtx.Dp(460); gtx.Constraints.Max.X > maxWidth {
+		gtx.Constraints.Max.X = maxWidth
+	}
+	return layout.Background{}.Layout(gtx,
+		func(gtx layout.Context) layout.Dimensions {
+			rect := image.Rectangle{Max: gtx.Constraints.Min}
+			defer clip.UniformRRect(rect, gtx.Dp(8)).Push(gtx.Ops).Pop()
+			paint.Fill(gtx.Ops, s.theme.Palette.Bg)
+			return layout.Dimensions{Size: gtx.Constraints.Min}
+		},
+		func(gtx layout.Context) layout.Dimensions {
+			return layout.Inset{Top: unit.Dp(20), Right: unit.Dp(24), Bottom: unit.Dp(20), Left: unit.Dp(24)}.Layout(gtx, func(gtx layout.Context) layout.Dimensions {
+				return layout.Flex{Axis: layout.Vertical}.Layout(gtx,
+					layout.Rigid(material.H6(s.theme, "放弃未保存的更改？").Layout),
+					layout.Rigid(layout.Spacer{Height: unit.Dp(8)}.Layout),
+					layout.Rigid(material.Body1(s.theme, "可以先保存配置，或不保存并关闭编辑对话框。").Layout),
+					layout.Rigid(layout.Spacer{Height: unit.Dp(18)}.Layout),
+					layout.Rigid(func(gtx layout.Context) layout.Dimensions {
+						return layout.Flex{Alignment: layout.Middle}.Layout(gtx,
+							layout.Rigid(material.Button(s.theme, &s.editDiscardStay, "继续编辑").Layout),
+							layout.Rigid(layout.Spacer{Width: unit.Dp(8)}.Layout),
+							layout.Rigid(material.Button(s.theme, &s.editDiscardDrop, "不保存").Layout),
+							layout.Rigid(layout.Spacer{Width: unit.Dp(8)}.Layout),
+							layout.Rigid(material.Button(s.theme, &s.editDiscardSave, "保存").Layout),
+						)
+					}),
+				)
+			})
+		},
+	)
+}
+
 func (s *Shell) deleteConfirmation(gtx layout.Context) layout.Dimensions {
 	row, ok := s.instanceRow(s.pendingDeleteID)
 	if !ok {
@@ -826,6 +1348,24 @@ func (s *Shell) startClickFor(id string) *widget.Clickable {
 	return click
 }

+func (s *Shell) rowClickFor(id string) *widget.Clickable {
+	if click := s.rowClicks[id]; click != nil {
+		return click
+	}
+	click := new(widget.Clickable)
+	s.rowClicks[id] = click
+	return click
+}
+
+func (s *Shell) editClickFor(id string) *widget.Clickable {
+	if click := s.editClicks[id]; click != nil {
+		return click
+	}
+	click := new(widget.Clickable)
+	s.editClicks[id] = click
+	return click
+}
+
 func (s *Shell) deleteClickFor(id string) *widget.Clickable {
 	if click := s.deleteClicks[id]; click != nil {
 		return click
@@ -922,6 +1462,82 @@ func (s *Shell) consumeStartResults() {
 	}
 }

+func (s *Shell) requestRefresh() {
+	if s.refreshClickState.running {
+		s.instanceFeedback = "实例状态正在刷新，请稍候。"
+		return
+	}
+	if s.instanceRefresher == nil {
+		s.instanceFeedback = "实例状态刷新服务尚未准备好。"
+		return
+	}
+	rows := append([]InstanceRow(nil), s.rows...)
+	snapshots := make(map[string]string, len(rows))
+	for _, row := range rows {
+		snapshots[row.ID] = instanceRefreshFingerprint(row)
+	}
+	s.refreshClickState.request++
+	request := s.refreshClickState.request
+	s.refreshClickState.running = true
+	s.instanceFeedback = "正在刷新已保存实例的状态…"
+	go func() {
+		results, err := s.instanceRefresher(context.Background(), rows)
+		s.refreshResults <- instanceRefreshResult{request: request, snapshots: snapshots, results: results, err: err}
+		if s.invalidate != nil {
+			s.invalidate()
+		}
+	}()
+}
+
+func (s *Shell) consumeRefreshResults() {
+	for {
+		select {
+		case result := <-s.refreshResults:
+			if !s.refreshClickState.running || result.request != s.refreshClickState.request {
+				continue
+			}
+			s.refreshClickState.running = false
+			if result.err != nil {
+				s.instanceFeedback = fmt.Sprintf("刷新实例状态失败：%v", result.err)
+				continue
+			}
+			applied, skipped, failed := 0, 0, 0
+			for _, refreshed := range result.results {
+				row, exists := s.instanceRow(refreshed.ID)
+				if !exists || result.snapshots[refreshed.ID] != instanceRefreshFingerprint(row) {
+					skipped++
+					continue
+				}
+				if refreshed.Status == "" {
+					failed++
+					continue
+				}
+				s.setInstanceRuntime(refreshed.ID, refreshed.Status, refreshed.PID, refreshed.RemoteDebugPort, refreshed.OccupancySource)
+				if refreshed.Message != "" {
+					failed++
+				}
+				applied++
+			}
+			switch {
+			case applied == 0 && failed > 0:
+				s.instanceFeedback = "实例状态刷新完成，但部分实例无法确认，请查看状态后重试。"
+			case skipped > 0:
+				s.instanceFeedback = fmt.Sprintf("已刷新 %d 个实例；忽略 %d 个已编辑或删除记录的过期结果。", applied, skipped)
+			case failed > 0:
+				s.instanceFeedback = fmt.Sprintf("已刷新 %d 个实例；%d 个实例状态无法完全确认。", applied, failed)
+			default:
+				s.instanceFeedback = fmt.Sprintf("已刷新 %d 个已保存实例的状态。", applied)
+			}
+		default:
+			return
+		}
+	}
+}
+
+func instanceRefreshFingerprint(row InstanceRow) string {
+	return strings.Join([]string{row.ID, row.Name, row.Browser, row.UserDataDir, row.TargetURL}, "\x00")
+}
+
 func (s *Shell) requestDelete(id string) {
 	row, ok := s.instanceRow(id)
 	if !ok {
@@ -966,6 +1582,8 @@ func (s *Shell) deleteInstance(id string) {
 		}
 		s.rows = append(s.rows[:i], s.rows[i+1:]...)
 		delete(s.startClicks, id)
+		delete(s.rowClicks, id)
+		delete(s.editClicks, id)
 		delete(s.deleteClicks, id)
 		delete(s.startStates, id)
 		s.instanceFeedback = fmt.Sprintf("已删除实例“%s”；其 User Data Dir 未被删除。", row.Name)
@@ -1007,6 +1625,16 @@ func (s *Shell) setInstanceRuntime(id, status string, pid, remoteDebugPort int,
 	return false
 }

+func (s *Shell) replaceInstanceRow(updated InstanceRow) bool {
+	for i := range s.rows {
+		if s.rows[i].ID == updated.ID {
+			s.rows[i] = updated
+			return true
+		}
+	}
+	return false
+}
+
 func (s *Shell) settingsState() (SettingsState, error) {
 	port, err := normalizeRemoteDebugStartPort(s.remoteDebugPort.Text())
 	if err != nil {
@@ -1049,12 +1677,24 @@ func mustIcon(data []byte) *widget.Icon {
 }

 func (s *Shell) chooseInstanceDirectory() {
+	s.chooseDirectory(directoryPickCreate)
+}
+
+func (s *Shell) chooseDirectory(target directoryPickTarget) {
 	if s.directoryPick.running {
-		s.formFeedback = "目录选择器已打开，请在系统窗口中选择或取消。"
+		if target == directoryPickEdit {
+			s.editFeedback = "目录选择器已打开，请在系统窗口中选择或取消。"
+		} else {
+			s.formFeedback = "目录选择器已打开，请在系统窗口中选择或取消。"
+		}
 		return
 	}
 	if s.directoryChooser == nil {
-		s.formFeedback = "目录选择器尚未准备好。"
+		if target == directoryPickEdit {
+			s.editFeedback = "目录选择器尚未准备好。"
+		} else {
+			s.formFeedback = "目录选择器尚未准备好。"
+		}
 		return
 	}
 	s.directoryPick.request++
@@ -1062,7 +1702,12 @@ func (s *Shell) chooseInstanceDirectory() {
 	ctx, cancel := context.WithCancel(context.Background())
 	s.directoryPick.cancel = cancel
 	s.directoryPick.running = true
-	s.formFeedback = "正在打开目录选择器…"
+	s.directoryPick.target = target
+	if target == directoryPickEdit {
+		s.editFeedback = "正在打开目录选择器…"
+	} else {
+		s.formFeedback = "正在打开目录选择器…"
+	}
 	go func() {
 		path, err := s.directoryChooser(ctx)
 		s.directoryResults <- directoryPickResult{request: request, path: path, err: err}
@@ -1079,28 +1724,41 @@ func (s *Shell) consumeDirectoryResults() {
 			if !s.directoryPick.running || result.request != s.directoryPick.request {
 				continue
 			}
+			target := s.directoryPick.target
 			s.directoryPick.running = false
 			s.directoryPick.cancel = nil
 			if result.err != nil {
 				if errors.Is(result.err, context.Canceled) {
-					s.formFeedback = "已取消选择 User Data Dir。"
+					s.setDirectoryPickFeedback(target, "已取消选择 User Data Dir。")
 				} else {
-					s.formFeedback = fmt.Sprintf("选择 User Data Dir 失败：%v", result.err)
+					s.setDirectoryPickFeedback(target, fmt.Sprintf("选择 User Data Dir 失败：%v", result.err))
 				}
 				continue
 			}
 			if result.path == "" {
-				s.formFeedback = "未选择 User Data Dir。"
+				s.setDirectoryPickFeedback(target, "未选择 User Data Dir。")
 				continue
 			}
-			s.instanceDir.SetText(result.path)
-			s.formFeedback = "已更新 User Data Dir。"
+			if target == directoryPickEdit {
+				s.editDir.SetText(result.path)
+			} else {
+				s.instanceDir.SetText(result.path)
+			}
+			s.setDirectoryPickFeedback(target, "已更新 User Data Dir。")
 		default:
 			return
 		}
 	}
 }

+func (s *Shell) setDirectoryPickFeedback(target directoryPickTarget, message string) {
+	if target == directoryPickEdit {
+		s.editFeedback = message
+		return
+	}
+	s.formFeedback = message
+}
+
 func (s *Shell) instanceDirButtonLabel() string {
 	if s.directoryPick.running {
 		return "选择中…"
@@ -2,6 +2,7 @@ package ui

 import (
 	"context"
+	"path/filepath"
 	"sync/atomic"
 	"testing"
 	"time"
@@ -48,6 +49,12 @@ func TestShellInstanceRowsContainRequiredColumnsAndIndependentActionControls(t *
 	if shell.deleteClickFor(shell.rows[0].ID) == shell.deleteClickFor(shell.rows[1].ID) {
 		t.Fatal("rows share a delete button state")
 	}
+	if shell.editClickFor(shell.rows[0].ID) == shell.editClickFor(shell.rows[1].ID) {
+		t.Fatal("rows share an edit button state")
+	}
+	if shell.rowClickFor(shell.rows[0].ID) == shell.rowClickFor(shell.rows[1].ID) {
+		t.Fatal("rows share a row interaction state")
+	}
 }

 func TestInstanceListColumnWeightsPrioritizeDirectoryAndCompactAction(t *testing.T) {
@@ -331,3 +338,108 @@ func TestShellAppliesSelectedInstanceDirectory(t *testing.T) {
 		t.Fatalf("instance dir = %q", got)
 	}
 }
+
+func TestShellRefreshesConfiguredInstancesAsynchronously(t *testing.T) {
+	shell := NewShell(material.NewTheme())
+	target := shell.rows[3]
+	seen := make(chan []InstanceRow, 1)
+	shell.OnRefreshInstances(func(_ context.Context, rows []InstanceRow) ([]InstanceRefreshResult, error) {
+		seen <- rows
+		return []InstanceRefreshResult{{ID: target.ID, Status: "运行中", PID: 5432, RemoteDebugPort: 9777, OccupancySource: "chub_registry"}}, nil
+	}, nil)
+
+	shell.requestRefresh()
+	if !shell.refreshClickState.running {
+		t.Fatal("refresh did not enter running state")
+	}
+	select {
+	case rows := <-seen:
+		if len(rows) != len(shell.rows) || rows[0].ID != shell.rows[0].ID {
+			t.Fatalf("refresh snapshot = %#v", rows)
+		}
+	case <-time.After(time.Second):
+		t.Fatal("refresh callback was not invoked")
+	}
+	var result instanceRefreshResult
+	select {
+	case result = <-shell.refreshResults:
+	case <-time.After(time.Second):
+		t.Fatal("refresh result was not produced")
+	}
+	shell.refreshResults <- result
+	shell.consumeRefreshResults()
+	row, ok := shell.instanceRow(target.ID)
+	if !ok || shell.refreshClickState.running || row.Status != "运行中" || row.PID != 5432 || row.RemoteDebugPort != 9777 {
+		t.Fatalf("refreshed row = %#v, running=%v", row, shell.refreshClickState.running)
+	}
+}
+
+func TestShellIgnoresRefreshResultAfterEditableFieldsChange(t *testing.T) {
+	shell := NewShell(material.NewTheme())
+	target := shell.rows[3]
+	shell.OnRefreshInstances(func(_ context.Context, _ []InstanceRow) ([]InstanceRefreshResult, error) {
+		return []InstanceRefreshResult{{ID: target.ID, Status: "运行中", PID: 5432}}, nil
+	}, nil)
+	shell.requestRefresh()
+	var result instanceRefreshResult
+	select {
+	case result = <-shell.refreshResults:
+	case <-time.After(time.Second):
+		t.Fatal("refresh result was not produced")
+	}
+	shell.rows[3].Name = "已编辑的实例"
+	shell.refreshResults <- result
+	shell.consumeRefreshResults()
+	row, ok := shell.instanceRow(target.ID)
+	if !ok || row.Status != "已退出" || row.PID != 0 {
+		t.Fatalf("stale refresh overwrote edited row: %#v", row)
+	}
+}
+
+func TestShellEditsExitedInstanceAndPreservesRuntimePort(t *testing.T) {
+	shell := NewShell(material.NewTheme())
+	target := shell.rows[3]
+	updatedDir := t.TempDir()
+	changes := 0
+	shell.OnInstancesChanged(func([]InstanceRow) { changes++ })
+
+	shell.beginEdit(target.ID)
+	shell.editName.SetText("已更新实例")
+	shell.editDir.SetText(updatedDir)
+	shell.editURL.SetText("https://example.com/updated")
+	shell.editBrowserKind.Value = "chrome"
+	shell.saveEdit()
+
+	row, ok := shell.instanceRow(target.ID)
+	if !ok || shell.editingID != "" || changes != 1 || row.Name != "已更新实例" || row.Browser != "Chrome" || row.UserDataDir != filepath.Clean(updatedDir) {
+		t.Fatalf("saved instance = %#v, changes=%d", row, changes)
+	}
+	if row.TargetURL != "https://example.com/updated" {
+		t.Fatalf("target URL = %q", row.TargetURL)
+	}
+}
+
+func TestShellLocksIdentityFieldsForRunningInstance(t *testing.T) {
+	shell := NewShell(material.NewTheme())
+	target := shell.rows[0]
+	shell.beginEdit(target.ID)
+	shell.editName.SetText("运行中更新名称")
+	shell.editDir.SetText(t.TempDir())
+	shell.editBrowserKind.Value = "edge"
+	shell.saveEdit()
+
+	row, ok := shell.instanceRow(target.ID)
+	if !ok || row.Name != "运行中更新名称" || row.UserDataDir != target.UserDataDir || row.Browser != target.Browser {
+		t.Fatalf("running instance identity changed: %#v", row)
+	}
+}
+
+func TestShellRequestsDiscardConfirmationForDirtyEdit(t *testing.T) {
+	shell := NewShell(material.NewTheme())
+	shell.beginEdit(shell.rows[3].ID)
+	shell.editName.SetText("未保存的更改")
+	shell.cancelEdit()
+	if !shell.pendingEditDiscard || shell.editingID == "" {
+		t.Fatalf("dirty edit cancellation state = discard %v editing %q", shell.pendingEditDiscard, shell.editingID)
+	}
+}