Add 'transform-border-label' and 'transform-preview-label'

CHANGELOG.md

@@ -1,8 +1,13 @@
 CHANGELOG
 =========
 
-0.36.1
+0.37.0
 ------
+- New actions
+    - `change-border-label`
+    - `change-preview-label`
+    - `transform-border-label`
+    - `transform-preview-label`
 - Bug fixes and improvements
 
 0.36.0

man/man1/fzf.1

@@ -1050,6 +1050,8 @@ A key or an event can be bound to one or more of the following actions.
     \fBtoggle-search\fR                (toggle search functionality)
     \fBtoggle-sort\fR
     \fBtoggle+up\fR                    \fIbtab    (shift-tab)\fR
+    \fBtransform-border-label(...)\fR  (transform border label using an external command)
+    \fBtransform-preview-label(...)\fR (transform preview label using an external command)
     \fBtransform-prompt(...)\fR        (transform prompt string using an external command)
     \fBtransform-query(...)\fR         (transform query string using an external command)
     \fBunbind(...)\fR                  (unbind bindings)

src/options.go

@@ -912,7 +912,7 @@ const (
 
 func init() {
 	executeRegexp = regexp.MustCompile(
-		`(?si)[:+](execute(?:-multi|-silent)?|reload(?:-sync)?|preview|(?:change|transform)-(?:query|prompt)|change-preview-window|change-preview-label|change-border-label|change-preview|(?:re|un)bind|pos|put)`)
+		`(?si)[:+](execute(?:-multi|-silent)?|reload(?:-sync)?|preview|(?:change|transform)-(?:query|prompt|border-label|preview-label)|change-preview-window|change-preview|(?:re|un)bind|pos|put)`)
 	splitRegexp = regexp.MustCompile("[,:]+")
 	actionNameRegexp = regexp.MustCompile("(?i)^[a-z-]+")
 }
@@ -1220,16 +1220,16 @@ func isExecuteAction(str string) actionType {
 		return actRebind
 	case "preview":
 		return actPreview
+	case "change-border-label":
+		return actChangeBorderLabel
+	case "change-preview-label":
+		return actChangePreviewLabel
 	case "change-preview-window":
 		return actChangePreviewWindow
 	case "change-preview":
 		return actChangePreview
-	case "change-preview-label":
-		return actChangePreviewLabel
 	case "change-prompt":
 		return actChangePrompt
-	case "change-border-label":
-		return actChangeBorderLabel
 	case "change-query":
 		return actChangeQuery
 	case "pos":
@@ -1242,6 +1242,10 @@ func isExecuteAction(str string) actionType {
 		return actExecuteMulti
 	case "put":
 		return actPut
+	case "transform-border-label":
+		return actTransformBorderLabel
+	case "transform-preview-label":
+		return actTransformPreviewLabel
 	case "transform-prompt":
 		return actTransformPrompt
 	case "transform-query":

src/terminal.go

@@ -276,6 +276,8 @@ const (
 	reqRefresh
 	reqReinit
 	reqFullRedraw
+	reqRedrawBorderLabel
+	reqRedrawPreviewLabel
 	reqClose
 	reqPrintQuery
 	reqPreviewEnqueue
@@ -349,6 +351,8 @@ const (
 	actToggleSort
 	actTogglePreview
 	actTogglePreviewWrap
+	actTransformBorderLabel
+	actTransformPreviewLabel
 	actTransformPrompt
 	actTransformQuery
 	actPreview
@@ -1252,13 +1256,24 @@ func (t *Terminal) resizeWindows(forcePreview bool) {
 	}
 
 	// Print border label
-	printLabel := func(window tui.Window, render labelPrinter, opts labelOpts, length int, borderShape tui.BorderShape) {
+	t.printLabel(t.border, t.borderLabel, t.borderLabelOpts, t.borderLabelLen, t.borderShape, false)
+	t.printLabel(t.pborder, t.previewLabel, t.previewLabelOpts, t.previewLabelLen, t.previewOpts.border, false)
+
+	for i := 0; i < t.window.Height(); i++ {
+		t.window.MoveAndClear(i, 0)
+	}
+}
+
+func (t *Terminal) printLabel(window tui.Window, render labelPrinter, opts labelOpts, length int, borderShape tui.BorderShape, redrawBorder bool) {
 	if window == nil || render == nil {
 		return
 	}
 
 	switch borderShape {
 	case tui.BorderHorizontal, tui.BorderTop, tui.BorderBottom, tui.BorderRounded, tui.BorderSharp, tui.BorderBold, tui.BorderDouble:
+		if redrawBorder {
+			window.DrawHBorder()
+		}
 		var col int
 		if opts.column == 0 {
 			col = util.Max(0, (window.Width()-length)/2)
@@ -1274,13 +1289,6 @@ func (t *Terminal) resizeWindows(forcePreview bool) {
 		window.Move(row, col)
 		render(window, window.Width())
 	}
-	}
-	printLabel(t.border, t.borderLabel, t.borderLabelOpts, t.borderLabelLen, t.borderShape)
-	printLabel(t.pborder, t.previewLabel, t.previewLabelOpts, t.previewLabelLen, t.previewOpts.border)
-
-	for i := 0; i < t.window.Height(); i++ {
-		t.window.MoveAndClear(i, 0)
-	}
 }
 
 func (t *Terminal) move(y int, x int, clear bool) {
@@ -2659,6 +2667,10 @@ func (t *Terminal) Loop() {
 						t.printHeader()
 					case reqRefresh:
 						t.suppress = false
+					case reqRedrawBorderLabel:
+						t.printLabel(t.border, t.borderLabel, t.borderLabelOpts, t.borderLabelLen, t.borderShape, true)
+					case reqRedrawPreviewLabel:
+						t.printLabel(t.pborder, t.previewLabel, t.previewLabelOpts, t.previewLabelLen, t.previewOpts.border, true)
 					case reqReinit:
 						t.tui.Resume(t.fullscreen, t.sigstop)
 						t.redraw()
@@ -2912,11 +2924,27 @@ func (t *Terminal) Loop() {
 				t.input = []rune(a.a)
 				t.cx = len(t.input)
 			case actChangeBorderLabel:
+				if t.border != nil {
 					t.borderLabel, t.borderLabelLen = t.ansiLabelPrinter(a.a, &tui.ColBorderLabel, false)
-				req(reqFullRedraw)
+					req(reqRedrawBorderLabel)
+				}
 			case actChangePreviewLabel:
+				if t.pborder != nil {
 					t.previewLabel, t.previewLabelLen = t.ansiLabelPrinter(a.a, &tui.ColPreviewLabel, false)
-				req(reqFullRedraw)
+					req(reqRedrawPreviewLabel)
+				}
+			case actTransformBorderLabel:
+				if t.border != nil {
+					label := t.executeCommand(a.a, false, true, true)
+					t.borderLabel, t.borderLabelLen = t.ansiLabelPrinter(label, &tui.ColBorderLabel, false)
+					req(reqRedrawBorderLabel)
+				}
+			case actTransformPreviewLabel:
+				if t.pborder != nil {
+					label := t.executeCommand(a.a, false, true, true)
+					t.previewLabel, t.previewLabelLen = t.ansiLabelPrinter(label, &tui.ColPreviewLabel, false)
+					req(reqRedrawPreviewLabel)
+				}
 			case actChangePrompt:
 				t.prompt, t.promptLen = t.parsePrompt(a.a)
 				req(reqPrompt)

src/tui/light.go

@@ -719,25 +719,38 @@ func (r *LightRenderer) NewWindow(top int, left int, width int, height int, prev
 		w.fg = r.theme.Fg.Color
 		w.bg = r.theme.Bg.Color
 	}
-	w.drawBorder()
+	w.drawBorder(false)
 	return w
 }
 
-func (w *LightWindow) drawBorder() {
+func (w *LightWindow) DrawHBorder() {
+	w.drawBorder(true)
+}
+
+func (w *LightWindow) drawBorder(onlyHorizontal bool) {
 	switch w.border.shape {
 	case BorderRounded, BorderSharp, BorderBold, BorderDouble:
-		w.drawBorderAround()
+		w.drawBorderAround(onlyHorizontal)
 	case BorderHorizontal:
 		w.drawBorderHorizontal(true, true)
 	case BorderVertical:
+		if onlyHorizontal {
+			return
+		}
 		w.drawBorderVertical(true, true)
 	case BorderTop:
 		w.drawBorderHorizontal(true, false)
 	case BorderBottom:
 		w.drawBorderHorizontal(false, true)
 	case BorderLeft:
+		if onlyHorizontal {
+			return
+		}
 		w.drawBorderVertical(true, false)
 	case BorderRight:
+		if onlyHorizontal {
+			return
+		}
 		w.drawBorderVertical(false, true)
 	}
 }
@@ -779,24 +792,26 @@ func (w *LightWindow) drawBorderVertical(left, right bool) {
 	}
 }
 
-func (w *LightWindow) drawBorderAround() {
+func (w *LightWindow) drawBorderAround(onlyHorizontal bool) {
 	w.Move(0, 0)
 	color := ColBorder
 	if w.preview {
 		color = ColPreviewBorder
 	}
 	hw := runewidth.RuneWidth(w.border.horizontal)
-	vw := runewidth.RuneWidth(w.border.vertical)
 	tcw := runewidth.RuneWidth(w.border.topLeft) + runewidth.RuneWidth(w.border.topRight)
 	bcw := runewidth.RuneWidth(w.border.bottomLeft) + runewidth.RuneWidth(w.border.bottomRight)
 	rem := (w.width - tcw) % hw
 	w.CPrint(color, string(w.border.topLeft)+repeat(w.border.horizontal, (w.width-tcw)/hw)+repeat(' ', rem)+string(w.border.topRight))
+	if !onlyHorizontal {
+		vw := runewidth.RuneWidth(w.border.vertical)
 		for y := 1; y < w.height-1; y++ {
 			w.Move(y, 0)
 			w.CPrint(color, string(w.border.vertical))
 			w.CPrint(color, repeat(' ', w.width-vw*2))
 			w.CPrint(color, string(w.border.vertical))
 		}
+	}
 	w.Move(w.height-1, 0)
 	rem = (w.width - bcw) % hw
 	w.CPrint(color, string(w.border.bottomLeft)+repeat(w.border.horizontal, (w.width-bcw)/hw)+repeat(' ', rem)+string(w.border.bottomRight))
@@ -1040,7 +1055,7 @@ func (w *LightWindow) FinishFill() {
 }
 
 func (w *LightWindow) Erase() {
-	w.drawBorder()
+	w.drawBorder(false)
 	// We don't erase the window here to avoid flickering during scroll
 	w.Move(0, 0)
 }

src/tui/tcell.go

@@ -512,7 +512,7 @@ func (r *FullscreenRenderer) NewWindow(top int, left int, width int, height int,
 		height:      height,
 		normal:      normal,
 		borderStyle: borderStyle}
-	w.drawBorder()
+	w.drawBorder(false)
 	return w
 }
 
@@ -670,7 +670,11 @@ func (w *TcellWindow) CFill(fg Color, bg Color, a Attr, str string) FillReturn {
 	return w.fillString(str, NewColorPair(fg, bg, a))
 }
 
-func (w *TcellWindow) drawBorder() {
+func (w *TcellWindow) DrawHBorder() {
+	w.drawBorder(true)
+}
+
+func (w *TcellWindow) drawBorder(onlyHorizontal bool) {
 	shape := w.borderStyle.shape
 	if shape == BorderNone {
 		return
@@ -718,6 +722,7 @@ func (w *TcellWindow) drawBorder() {
 			_screen.SetContent(x, bot-1, w.borderStyle.horizontal, nil, style)
 		}
 	}
+	if !onlyHorizontal {
 		switch shape {
 		case BorderRounded, BorderSharp, BorderBold, BorderDouble, BorderVertical, BorderLeft:
 			for y := top; y < bot; y++ {
@@ -731,6 +736,7 @@ func (w *TcellWindow) drawBorder() {
 				_screen.SetContent(right-vw, y, w.borderStyle.vertical, nil, style)
 			}
 		}
+	}
 	switch shape {
 	case BorderRounded, BorderSharp, BorderBold, BorderDouble:
 		_screen.SetContent(left, top, w.borderStyle.topLeft, nil, style)

src/tui/tui.go

@@ -426,6 +426,7 @@ type Window interface {
 	Width() int
 	Height() int
 
+	DrawHBorder()
 	Refresh()
 	FinishFill()
 	Close()

test/test_go.rb

@@ -2474,11 +2474,21 @@ class TestGoFZF < TestBase
   end
 
   def test_labels_center
-    tmux.send_keys ': | fzf --border --border-label foobar --preview : --preview-label barfoo', :Enter
+    tmux.send_keys 'echo x | fzf --border --border-label foobar --preview : --preview-label barfoo --bind "space:change-border-label(foobarfoo)+change-preview-label(barfoobar),enter:transform-border-label(echo foo{}foo)+transform-preview-label(echo bar{}bar)"', :Enter
     tmux.until do
       assert_includes(_1[0], '─foobar─')
       assert_includes(_1[1], '─barfoo─')
     end
+    tmux.send_keys :space
+    tmux.until do
+      assert_includes(_1[0], '─foobarfoo─')
+      assert_includes(_1[1], '─barfoobar─')
+    end
+    tmux.send_keys :Enter
+    tmux.until do
+      assert_includes(_1[0], '─fooxfoo─')
+      assert_includes(_1[1], '─barxbar─')
+    end
   end
 
   def test_labels_left