Show currently pressed keys in statusline

This patch adds the currently pressed keys to the statusline. This is
useful when keybindings are multiple keys long and you might forget
which keys are already pressed.

1 files changed, 14 insertions, 1 deletions

diff --git a/widgets/status.go b/widgets/status.go
index c7764f8..8d0a1ae 100644
--- a/widgets/status.go
+++ b/widgets/status.go
@@ -4,6 +4,7 @@ import (
 	"time"
 
 	"github.com/gdamore/tcell"
+	"github.com/mattn/go-runewidth"
 
 	"git.sr.ht/~sircmpwn/aerc/lib/ui"
 )
@@ -12,6 +13,7 @@ type StatusLine struct {
 	ui.Invalidatable
 	stack    []*StatusMessage
 	fallback StatusMessage
+	aerc     *Aerc
 }
 
 type StatusMessage struct {
@@ -42,7 +44,14 @@ func (status *StatusLine) Draw(ctx *ui.Context) {
 	style := tcell.StyleDefault.
 		Background(line.bg).Foreground(line.fg).Reverse(true)
 	ctx.Fill(0, 0, ctx.Width(), ctx.Height(), ' ', style)
-	ctx.Printf(0, 0, style, "%s", line.message)
+	pendingKeys := ""
+	if status.aerc != nil {
+		for _, pendingKey := range status.aerc.pendingKeys {
+			pendingKeys += string(pendingKey.Rune)
+		}
+	}
+	message := runewidth.FillRight(line.message, ctx.Width()-len(pendingKeys)-5)
+	ctx.Printf(0, 0, style, "%s%s", message, pendingKeys)
 }
 
 func (status *StatusLine) Set(text string) *StatusMessage {
@@ -79,6 +88,10 @@ func (status *StatusLine) Expire() {
 	status.stack = nil
 }
 
+func (status *StatusLine) SetAerc(aerc *Aerc) {
+	status.aerc = aerc
+}
+
 func (msg *StatusMessage) Color(bg tcell.Color, fg tcell.Color) {
 	msg.bg = bg
 	msg.fg = fg