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aerc/widgets/status.go
Jeffas d7975132b6 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.
2019-07-17 17:12:52 -04:00

99 lines
2.0 KiB
Go

package widgets
import (
"time"
"github.com/gdamore/tcell"
"github.com/mattn/go-runewidth"
"git.sr.ht/~sircmpwn/aerc/lib/ui"
)
type StatusLine struct {
ui.Invalidatable
stack []*StatusMessage
fallback StatusMessage
aerc *Aerc
}
type StatusMessage struct {
bg tcell.Color
fg tcell.Color
message string
}
func NewStatusLine() *StatusLine {
return &StatusLine{
fallback: StatusMessage{
bg: tcell.ColorDefault,
fg: tcell.ColorDefault,
message: "Idle",
},
}
}
func (status *StatusLine) Invalidate() {
status.DoInvalidate(status)
}
func (status *StatusLine) Draw(ctx *ui.Context) {
line := &status.fallback
if len(status.stack) != 0 {
line = status.stack[len(status.stack)-1]
}
style := tcell.StyleDefault.
Background(line.bg).Foreground(line.fg).Reverse(true)
ctx.Fill(0, 0, ctx.Width(), ctx.Height(), ' ', style)
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 {
status.fallback = StatusMessage{
bg: tcell.ColorDefault,
fg: tcell.ColorDefault,
message: text,
}
status.Invalidate()
return &status.fallback
}
func (status *StatusLine) Push(text string, expiry time.Duration) *StatusMessage {
msg := &StatusMessage{
bg: tcell.ColorDefault,
fg: tcell.ColorDefault,
message: text,
}
status.stack = append(status.stack, msg)
go (func() {
time.Sleep(expiry)
for i, m := range status.stack {
if m == msg {
status.stack = append(status.stack[:i], status.stack[i+1:]...)
break
}
}
status.Invalidate()
})()
return msg
}
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
}