tui: restore global filter stack and anchored matches

2 files changed, 74 insertions, 43 deletions

diff --git a/internal/tui/common/keys.go b/internal/tui/common/keys.go
index fd7bef1..f2e1271 100644
--- a/internal/tui/common/keys.go
+++ b/internal/tui/common/keys.go
@@ -10,27 +10,28 @@ type HelpSection struct {
 
 // KeyMap groups all key bindings shared by TUI screens.
 type KeyMap struct {
-	Tab       key.Binding
-	ShiftTab  key.Binding
-	One       key.Binding
-	Two       key.Binding
-	Three     key.Binding
-	Four      key.Binding
-	Five      key.Binding
-	Six       key.Binding
-	Seven     key.Binding
-	Visualize key.Binding
-	Metric    key.Binding
-	DirGroup  key.Binding
-	SelectPID key.Binding
-	SelectTID key.Binding
-	Probes    key.Binding
-	Filter    key.Binding
-	Export    key.Binding
-	Quit      key.Binding
-	Enter     key.Binding
-	Esc       key.Binding
-	Refresh   key.Binding
+	Tab        key.Binding
+	ShiftTab   key.Binding
+	One        key.Binding
+	Two        key.Binding
+	Three      key.Binding
+	Four       key.Binding
+	Five       key.Binding
+	Six        key.Binding
+	Seven      key.Binding
+	Visualize  key.Binding
+	Metric     key.Binding
+	DirGroup   key.Binding
+	SelectPID  key.Binding
+	SelectTID  key.Binding
+	Probes     key.Binding
+	Filter     key.Binding
+	FilterUndo key.Binding
+	Export     key.Binding
+	Quit       key.Binding
+	Enter      key.Binding
+	Esc        key.Binding
+	Refresh    key.Binding
 }
 
 // Keys contains the default shared key map.
@@ -39,27 +40,28 @@ var Keys = DefaultKeyMap()
 // DefaultKeyMap builds the default key bindings used by models.
 func DefaultKeyMap() KeyMap {
 	return KeyMap{
-		Tab:       key.NewBinding(key.WithKeys("tab"), key.WithHelp("tab", "next tab")),
-		ShiftTab:  key.NewBinding(key.WithKeys("shift+tab"), key.WithHelp("shift+tab", "prev tab")),
-		One:       key.NewBinding(key.WithKeys("1"), key.WithHelp("1", "flame")),
-		Two:       key.NewBinding(key.WithKeys("2"), key.WithHelp("2", "overview")),
-		Three:     key.NewBinding(key.WithKeys("3"), key.WithHelp("3", "syscalls")),
-		Four:      key.NewBinding(key.WithKeys("4"), key.WithHelp("4", "files")),
-		Five:      key.NewBinding(key.WithKeys("5"), key.WithHelp("5", "processes")),
-		Six:       key.NewBinding(key.WithKeys("6"), key.WithHelp("6", "lat+gaps")),
-		Seven:     key.NewBinding(key.WithKeys("7"), key.WithHelp("7", "stream")),
-		Visualize: key.NewBinding(key.WithKeys("v"), key.WithHelp("v", "viz")),
-		Metric:    key.NewBinding(key.WithKeys("b"), key.WithHelp("b", "metric")),
-		DirGroup:  key.NewBinding(key.WithKeys("d"), key.WithHelp("d", "dir group")),
-		SelectPID: key.NewBinding(key.WithKeys("p"), key.WithHelp("p", "select pid")),
-		SelectTID: key.NewBinding(key.WithKeys("t"), key.WithHelp("t", "select tid")),
-		Probes:    key.NewBinding(key.WithKeys("o"), key.WithHelp("o", "probes")),
-		Filter:    key.NewBinding(key.WithKeys("f"), key.WithHelp("f", "filter")),
-		Export:    key.NewBinding(key.WithKeys("e"), key.WithHelp("e", "snapshot export")),
-		Quit:      key.NewBinding(key.WithKeys("q", "ctrl+c"), key.WithHelp("q", "quit")),
-		Enter:     key.NewBinding(key.WithKeys("enter"), key.WithHelp("enter", "select")),
-		Esc:       key.NewBinding(key.WithKeys("esc"), key.WithHelp("esc", "back")),
-		Refresh:   key.NewBinding(key.WithKeys("r"), key.WithHelp("r", "reset baseline")),
+		Tab:        key.NewBinding(key.WithKeys("tab"), key.WithHelp("tab", "next tab")),
+		ShiftTab:   key.NewBinding(key.WithKeys("shift+tab"), key.WithHelp("shift+tab", "prev tab")),
+		One:        key.NewBinding(key.WithKeys("1"), key.WithHelp("1", "flame")),
+		Two:        key.NewBinding(key.WithKeys("2"), key.WithHelp("2", "overview")),
+		Three:      key.NewBinding(key.WithKeys("3"), key.WithHelp("3", "syscalls")),
+		Four:       key.NewBinding(key.WithKeys("4"), key.WithHelp("4", "files")),
+		Five:       key.NewBinding(key.WithKeys("5"), key.WithHelp("5", "processes")),
+		Six:        key.NewBinding(key.WithKeys("6"), key.WithHelp("6", "lat+gaps")),
+		Seven:      key.NewBinding(key.WithKeys("7"), key.WithHelp("7", "stream")),
+		Visualize:  key.NewBinding(key.WithKeys("v"), key.WithHelp("v", "viz")),
+		Metric:     key.NewBinding(key.WithKeys("b"), key.WithHelp("b", "metric")),
+		DirGroup:   key.NewBinding(key.WithKeys("d"), key.WithHelp("d", "dir group")),
+		SelectPID:  key.NewBinding(key.WithKeys("p"), key.WithHelp("p", "select pid")),
+		SelectTID:  key.NewBinding(key.WithKeys("t"), key.WithHelp("t", "select tid")),
+		Probes:     key.NewBinding(key.WithKeys("o"), key.WithHelp("o", "probes")),
+		Filter:     key.NewBinding(key.WithKeys("f"), key.WithHelp("f", "filter")),
+		FilterUndo: key.NewBinding(key.WithKeys("F"), key.WithHelp("F", "undo filter")),
+		Export:     key.NewBinding(key.WithKeys("e"), key.WithHelp("e", "snapshot export")),
+		Quit:       key.NewBinding(key.WithKeys("q", "ctrl+c"), key.WithHelp("q", "quit")),
+		Enter:      key.NewBinding(key.WithKeys("enter"), key.WithHelp("enter", "select")),
+		Esc:        key.NewBinding(key.WithKeys("esc"), key.WithHelp("esc", "back")),
+		Refresh:    key.NewBinding(key.WithKeys("r"), key.WithHelp("r", "reset baseline")),
 	}
 }
 
@@ -93,6 +95,7 @@ func (k KeyMap) DashboardStatusHelpSections() []HelpSection {
 		k.Visualize,
 		k.Metric,
 		k.Filter,
+		k.FilterUndo,
 		k.SelectPID,
 		k.SelectTID,
 		k.Probes,
@@ -107,6 +110,8 @@ func (k KeyMap) DashboardStatusHelpSections() []HelpSection {
 		k.Visualize,
 		k.Metric,
 		helpTextBinding("space", "stream pause"),
+		helpTextBinding("enter", "stream push filter"),
+		helpTextBinding("esc", "stream undo filter"),
 		helpTextBinding("g/G", "stream top/tail"),
 		helpTextBinding("left/right", "stream col"),
 		helpTextBinding("h/l", "stream col"),
@@ -132,13 +137,15 @@ func (k KeyMap) DashboardFullHelp() [][]key.Binding {
 		controls = append(controls, k.Export)
 	}
 	controls = append(controls, k.DirGroup, k.SelectPID, k.SelectTID, k.Probes, k.Refresh, k.Quit)
-	controls = append(controls, k.Visualize, k.Metric, k.Filter)
+	controls = append(controls, k.Visualize, k.Metric, k.Filter, k.FilterUndo)
 
 	return [][]key.Binding{
 		{k.One, k.Two, k.Three, k.Four, k.Five, k.Six, k.Seven},
 		controls,
 		{
 			helpTextBinding("space", "stream pause"),
+			helpTextBinding("enter", "stream push filter"),
+			helpTextBinding("esc", "stream undo filter"),
 			helpTextBinding("g/G", "stream top/tail"),
 			helpTextBinding("left/right", "stream col"),
 			helpTextBinding("h/l", "stream col"),
diff --git a/internal/tui/common/keys_test.go b/internal/tui/common/keys_test.go
index a2b5940..43f4b8b 100644
--- a/internal/tui/common/keys_test.go
+++ b/internal/tui/common/keys_test.go
@@ -38,6 +38,11 @@ func TestDefaultKeyMapIncludesDirGroupBinding(t *testing.T) {
 	if metricHelp.Key != "b" || metricHelp.Desc != "metric" {
 		t.Fatalf("unexpected metric binding help: key=%q desc=%q", metricHelp.Key, metricHelp.Desc)
 	}
+
+	undoHelp := keys.FilterUndo.Help()
+	if undoHelp.Key != "F" || undoHelp.Desc != "undo filter" {
+		t.Fatalf("unexpected filter undo binding help: key=%q desc=%q", undoHelp.Key, undoHelp.Desc)
+	}
 }
 
 func TestDashboardFullHelpIncludesDirGroupBinding(t *testing.T) {
@@ -130,6 +135,18 @@ func TestDashboardFullHelpIncludesDirGroupBinding(t *testing.T) {
 	if !found {
 		t.Fatalf("expected metric binding in dashboard full help controls")
 	}
+
+	found = false
+	for _, binding := range groups[1] {
+		help := binding.Help()
+		if help.Key == "F" && help.Desc == "undo filter" {
+			found = true
+			break
+		}
+	}
+	if !found {
+		t.Fatalf("expected undo filter binding in dashboard full help controls")
+	}
 }
 
 func TestDashboardStatusHelpIncludesProbesBinding(t *testing.T) {
@@ -138,6 +155,7 @@ func TestDashboardStatusHelpIncludesProbesBinding(t *testing.T) {
 	found := false
 	foundSelectTID := false
 	foundOne := false
+	foundUndo := false
 	for _, binding := range short {
 		help := binding.Help()
 		if help.Key == "o" && help.Desc == "probes" {
@@ -149,6 +167,9 @@ func TestDashboardStatusHelpIncludesProbesBinding(t *testing.T) {
 		if help.Key == "1" && help.Desc == "flame" {
 			foundOne = true
 		}
+		if help.Key == "F" && help.Desc == "undo filter" {
+			foundUndo = true
+		}
 	}
 	if !found {
 		t.Fatalf("expected probes binding in dashboard short help")
@@ -159,4 +180,7 @@ func TestDashboardStatusHelpIncludesProbesBinding(t *testing.T) {
 	if !foundOne {
 		t.Fatalf("expected flame tab binding in dashboard short help")
 	}
+	if !foundUndo {
+		t.Fatalf("expected undo filter binding in dashboard short help")
+	}
 }