Add footer

Options:
  --footer=STR             String to print as footer
  --footer-border[=STYLE]  Draw border around the footer section
                           [rounded|sharp|bold|block|thinblock|double|horizontal|vertical|
                            top|bottom|left|right|line|none] (default: line)
  --footer-label=LABEL     Label to print on the footer border
  --footer-label-pos=COL   Position of the footer label
                           [POSITIVE_INTEGER: columns from left|
                            NEGATIVE_INTEGER: columns from right][:bottom]
                           (default: 0 or center)

The default border type for footer is 'line', which draws a single
separator between the footer and the list. It changes its position
depending on `--layout`, so you don't have to manually switch between
'top' and 'bottom'

The 'line' style is now supported by other border types as well.
`--list-border` is the only exception.

3 files changed, 55 insertions, 1 deletions

diff --git a/src/tui/light.go b/src/tui/light.go
index eb3de098..54abbe5c 100644
--- a/src/tui/light.go
+++ b/src/tui/light.go
@@ -829,11 +829,14 @@ func (r *LightRenderer) NewWindow(top int, left int, width int, height int, wind
 	case WindowHeader:
 		w.fg = r.theme.Header.Color
 		w.bg = r.theme.HeaderBg.Color
+	case WindowFooter:
+		w.fg = r.theme.Footer.Color
+		w.bg = r.theme.FooterBg.Color
 	case WindowPreview:
 		w.fg = r.theme.PreviewFg.Color
 		w.bg = r.theme.PreviewBg.Color
 	}
-	if erase && !w.bg.IsDefault() && w.border.shape != BorderNone {
+	if erase && !w.bg.IsDefault() && w.border.shape != BorderNone && w.height > 0 {
 		// fzf --color bg:blue --border --padding 1,2
 		w.Erase()
 	}
@@ -889,6 +892,8 @@ func (w *LightWindow) drawBorderHorizontal(top, bottom bool) {
 		color = ColInputBorder
 	case WindowHeader:
 		color = ColHeaderBorder
+	case WindowFooter:
+		color = ColFooterBorder
 	case WindowPreview:
 		color = ColPreviewBorder
 	}
@@ -914,6 +919,8 @@ func (w *LightWindow) drawBorderVertical(left, right bool) {
 		color = ColInputBorder
 	case WindowHeader:
 		color = ColHeaderBorder
+	case WindowFooter:
+		color = ColFooterBorder
 	case WindowPreview:
 		color = ColPreviewBorder
 	}
@@ -941,6 +948,8 @@ func (w *LightWindow) drawBorderAround(onlyHorizontal bool) {
 		color = ColInputBorder
 	case WindowHeader:
 		color = ColHeaderBorder
+	case WindowFooter:
+		color = ColFooterBorder
 	case WindowPreview:
 		color = ColPreviewBorder
 	}
diff --git a/src/tui/tcell.go b/src/tui/tcell.go
index a2630463..762768da 100644
--- a/src/tui/tcell.go
+++ b/src/tui/tcell.go
@@ -600,6 +600,8 @@ func (r *FullscreenRenderer) NewWindow(top int, left int, width int, height int,
 		normal = ColNormal
 	case WindowHeader:
 		normal = ColHeader
+	case WindowFooter:
+		normal = ColFooter
 	case WindowInput:
 		normal = ColInput
 	case WindowPreview:
@@ -865,6 +867,8 @@ func (w *TcellWindow) drawBorder(onlyHorizontal bool) {
 			style = ColListBorder.style()
 		case WindowHeader:
 			style = ColHeaderBorder.style()
+		case WindowFooter:
+			style = ColFooterBorder.style()
 		case WindowInput:
 			style = ColInputBorder.style()
 		case WindowPreview:
diff --git a/src/tui/tui.go b/src/tui/tui.go
index 06dbccb0..c8844753 100644
--- a/src/tui/tui.go
+++ b/src/tui/tui.go
@@ -359,6 +359,10 @@ type ColorTheme struct {
 	HeaderBg         ColorAttr
 	HeaderBorder     ColorAttr
 	HeaderLabel      ColorAttr
+	Footer           ColorAttr
+	FooterBg         ColorAttr
+	FooterBorder     ColorAttr
+	FooterLabel      ColorAttr
 	Separator        ColorAttr
 	Scrollbar        ColorAttr
 	Border           ColorAttr
@@ -612,6 +616,7 @@ const (
 	WindowPreview
 	WindowInput
 	WindowHeader
+	WindowFooter
 )
 
 type Renderer interface {
@@ -720,6 +725,9 @@ var (
 	ColHeader               ColorPair
 	ColHeaderBorder         ColorPair
 	ColHeaderLabel          ColorPair
+	ColFooter               ColorPair
+	ColFooterBorder         ColorPair
+	ColFooterLabel          ColorPair
 	ColSeparator            ColorPair
 	ColScrollbar            ColorPair
 	ColGapLine              ColorPair
@@ -758,6 +766,7 @@ func EmptyTheme() *ColorTheme {
 		Cursor:           ColorAttr{colUndefined, AttrUndefined},
 		Marker:           ColorAttr{colUndefined, AttrUndefined},
 		Header:           ColorAttr{colUndefined, AttrUndefined},
+		Footer:           ColorAttr{colUndefined, AttrUndefined},
 		Border:           ColorAttr{colUndefined, AttrUndefined},
 		BorderLabel:      ColorAttr{colUndefined, AttrUndefined},
 		ListLabel:        ColorAttr{colUndefined, AttrUndefined},
@@ -778,6 +787,9 @@ func EmptyTheme() *ColorTheme {
 		HeaderBg:         ColorAttr{colUndefined, AttrUndefined},
 		HeaderBorder:     ColorAttr{colUndefined, AttrUndefined},
 		HeaderLabel:      ColorAttr{colUndefined, AttrUndefined},
+		FooterBg:         ColorAttr{colUndefined, AttrUndefined},
+		FooterBorder:     ColorAttr{colUndefined, AttrUndefined},
+		FooterLabel:      ColorAttr{colUndefined, AttrUndefined},
 		GapLine:          ColorAttr{colUndefined, AttrUndefined},
 		Nth:              ColorAttr{colUndefined, AttrUndefined},
 	}
@@ -825,6 +837,9 @@ func NoColorTheme() *ColorTheme {
 		HeaderBg:         ColorAttr{colDefault, AttrUndefined},
 		HeaderBorder:     ColorAttr{colDefault, AttrUndefined},
 		HeaderLabel:      ColorAttr{colDefault, AttrUndefined},
+		FooterBg:         ColorAttr{colDefault, AttrUndefined},
+		FooterBorder:     ColorAttr{colDefault, AttrUndefined},
+		FooterLabel:      ColorAttr{colDefault, AttrUndefined},
 		GapLine:          ColorAttr{colDefault, AttrUndefined},
 		Nth:              ColorAttr{colUndefined, AttrUndefined},
 	}
@@ -852,6 +867,7 @@ func init() {
 		Cursor:           ColorAttr{colRed, AttrUndefined},
 		Marker:           ColorAttr{colMagenta, AttrUndefined},
 		Header:           ColorAttr{colCyan, AttrUndefined},
+		Footer:           ColorAttr{colCyan, AttrUndefined},
 		Border:           ColorAttr{colBlack, AttrUndefined},
 		BorderLabel:      ColorAttr{colWhite, AttrUndefined},
 		Ghost:            ColorAttr{colUndefined, Dim},
@@ -869,6 +885,12 @@ func init() {
 		InputBg:          ColorAttr{colUndefined, AttrUndefined},
 		InputBorder:      ColorAttr{colUndefined, AttrUndefined},
 		InputLabel:       ColorAttr{colUndefined, AttrUndefined},
+		HeaderBg:         ColorAttr{colUndefined, AttrUndefined},
+		HeaderBorder:     ColorAttr{colUndefined, AttrUndefined},
+		HeaderLabel:      ColorAttr{colUndefined, AttrUndefined},
+		FooterBg:         ColorAttr{colUndefined, AttrUndefined},
+		FooterBorder:     ColorAttr{colUndefined, AttrUndefined},
+		FooterLabel:      ColorAttr{colUndefined, AttrUndefined},
 		GapLine:          ColorAttr{colUndefined, AttrUndefined},
 		Nth:              ColorAttr{colUndefined, AttrUndefined},
 	}
@@ -893,6 +915,7 @@ func init() {
 		Cursor:           ColorAttr{161, AttrUndefined},
 		Marker:           ColorAttr{168, AttrUndefined},
 		Header:           ColorAttr{109, AttrUndefined},
+		Footer:           ColorAttr{109, AttrUndefined},
 		Border:           ColorAttr{59, AttrUndefined},
 		BorderLabel:      ColorAttr{145, AttrUndefined},
 		Ghost:            ColorAttr{colUndefined, Dim},
@@ -910,6 +933,12 @@ func init() {
 		InputBg:          ColorAttr{colUndefined, AttrUndefined},
 		InputBorder:      ColorAttr{colUndefined, AttrUndefined},
 		InputLabel:       ColorAttr{colUndefined, AttrUndefined},
+		HeaderBg:         ColorAttr{colUndefined, AttrUndefined},
+		HeaderBorder:     ColorAttr{colUndefined, AttrUndefined},
+		HeaderLabel:      ColorAttr{colUndefined, AttrUndefined},
+		FooterBg:         ColorAttr{colUndefined, AttrUndefined},
+		FooterBorder:     ColorAttr{colUndefined, AttrUndefined},
+		FooterLabel:      ColorAttr{colUndefined, AttrUndefined},
 		GapLine:          ColorAttr{colUndefined, AttrUndefined},
 		Nth:              ColorAttr{colUndefined, AttrUndefined},
 	}
@@ -934,6 +963,7 @@ func init() {
 		Cursor:           ColorAttr{161, AttrUndefined},
 		Marker:           ColorAttr{168, AttrUndefined},
 		Header:           ColorAttr{31, AttrUndefined},
+		Footer:           ColorAttr{31, AttrUndefined},
 		Border:           ColorAttr{145, AttrUndefined},
 		BorderLabel:      ColorAttr{59, AttrUndefined},
 		Ghost:            ColorAttr{colUndefined, Dim},
@@ -954,6 +984,9 @@ func init() {
 		HeaderBg:         ColorAttr{colUndefined, AttrUndefined},
 		HeaderBorder:     ColorAttr{colUndefined, AttrUndefined},
 		HeaderLabel:      ColorAttr{colUndefined, AttrUndefined},
+		FooterBg:         ColorAttr{colUndefined, AttrUndefined},
+		FooterBorder:     ColorAttr{colUndefined, AttrUndefined},
+		FooterLabel:      ColorAttr{colUndefined, AttrUndefined},
 		GapLine:          ColorAttr{colUndefined, AttrUndefined},
 		Nth:              ColorAttr{colUndefined, AttrUndefined},
 	}
@@ -989,6 +1022,7 @@ func InitTheme(theme *ColorTheme, baseTheme *ColorTheme, forceBlack bool, hasInp
 	theme.Cursor = o(baseTheme.Cursor, theme.Cursor)
 	theme.Marker = o(baseTheme.Marker, theme.Marker)
 	theme.Header = o(baseTheme.Header, theme.Header)
+	theme.Footer = o(baseTheme.Footer, theme.Footer)
 	theme.Border = o(baseTheme.Border, theme.Border)
 	theme.BorderLabel = o(baseTheme.BorderLabel, theme.BorderLabel)
 
@@ -1042,6 +1076,10 @@ func InitTheme(theme *ColorTheme, baseTheme *ColorTheme, forceBlack bool, hasInp
 	theme.HeaderBorder = o(theme.Border, theme.HeaderBorder)
 	theme.HeaderLabel = o(theme.BorderLabel, theme.HeaderLabel)
 
+	theme.FooterBg = o(theme.Bg, theme.FooterBg)
+	theme.FooterBorder = o(theme.Border, theme.FooterBorder)
+	theme.FooterLabel = o(theme.BorderLabel, theme.FooterLabel)
+
 	initPalette(theme)
 }
 
@@ -1095,6 +1133,9 @@ func initPalette(theme *ColorTheme) {
 	ColHeader = pair(theme.Header, theme.HeaderBg)
 	ColHeaderBorder = pair(theme.HeaderBorder, theme.HeaderBg)
 	ColHeaderLabel = pair(theme.HeaderLabel, theme.HeaderBg)
+	ColFooter = pair(theme.Footer, theme.FooterBg)
+	ColFooterBorder = pair(theme.FooterBorder, theme.FooterBg)
+	ColFooterLabel = pair(theme.FooterLabel, theme.FooterBg)
 }
 
 func runeWidth(r rune) int {