Readme « transect - mu - Soul of a tiny new machine. More thorough tests → More comprehensible and rewrite-friendly software → More resilient society.

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Abortive series of attempts at building a bootstrappable low-level language.
Type-checked, but feasible to implement in some sort of notation for machine
code (like SubX).

The latest version is in compiler10. But it doesn't account for checking
how programs allocate registers.

nt-weight: bold } /* Literal.Number.Oct */ .highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */ .highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */ .highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */ .highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */ .highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */ .highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */ .highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */ .highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */ .highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */ .highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */ .highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */ .highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */ .highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */ .highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */ .highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */ .highlight .vc { color: #336699 } /* Name.Variable.Class */ .highlight .vg { color: #dd7700 } /* Name.Variable.Global */ .highlight .vi { color: #3333bb } /* Name.Variable.Instance */ .highlight .vm { color: #336699 } /* Name.Variable.Magic */ .highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */

package widgets

import (
	"time"

	"github.com/gdamore/tcell"

	"git.sr.ht/~sircmpwn/aerc/lib/ui"
)

type StatusLine struct {
	ui.Invalidatable
	stack    []*StatusMessage
	fallback StatusMessage
}

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)
	ctx.Printf(0, 0, style, "%s", line.message)
}

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 (msg *StatusMessage) Color(bg tcell.Color, fg tcell.Color) {
	msg.bg = bg
	msg.fg = fg
}