package widgets
import (
"io/ioutil"
"os"
"os/exec"
"github.com/gdamore/tcell"
"github.com/mattn/go-runewidth"
"git.sr.ht/~sircmpwn/aerc2/config"
"git.sr.ht/~sircmpwn/aerc2/lib/ui"
)
type headerEditor struct {
name string
input *ui.TextInput
}
type Composer struct {
headers struct {
from *headerEditor
subject *headerEditor
to *headerEditor
}
config *config.AccountConfig
editor *Terminal
email *os.File
grid *ui.Grid
focusable []ui.DrawableInteractive
focused int
}
// TODO: Let caller configure headers, initial body (for replies), etc
func NewComposer(conf *config.AccountConfig) *Composer {
grid := ui.NewGrid().Rows([]ui.GridSpec{
{ui.SIZE_EXACT, 3},
{ui.SIZE_WEIGHT, 1},
}).Columns([]ui.GridSpec{
{ui.SIZE_WEIGHT, 1},
})
// TODO: let user specify extra headers to edit by default
headers := ui.NewGrid().Rows([]ui.GridSpec{
{ui.SIZE_EXACT, 1}, // To/From
{ui.SIZE_EXACT, 1}, // Subject
{ui.SIZE_EXACT, 1}, // [spacer]
}).Columns([]ui.GridSpec{
{ui.SIZE_WEIGHT, 1},
{ui.SIZE_WEIGHT, 1},
})
to := newHeaderEditor("To", "")
from := newHeaderEditor("From", conf.From)
subject := newHeaderEditor("Subject", "")
headers.AddChild(to).At(0, 0)
headers.AddChild(from).At(0, 1)
headers.AddChild(subject).At(1, 0).Span(1, 2)
headers.AddChild(ui.NewFill(' ')).At(2, 0).Span(1, 2)
email, err := ioutil.TempFile("", "aerc-compose-*.eml")
if err != nil {
// TODO: handle this better
return nil
}
// TODO: built-in config option, $EDITOR, then vi, in that order
editor := exec.Command("vim", email.Name())
term, _ := NewTerminal(editor)
grid.AddChild(headers).At(0, 0)
grid.AddChild(term).At(1, 0)
return &Composer{
config: conf,
editor: term,
email: email,
grid: grid,
// You have to backtab to get to "From", since you usually don't edit it
focused: 1,
focusable: []ui.DrawableInteractive{from, to, subject, term},
}
}
func (c *Composer) Draw(ctx *ui.Context) {
c.grid.Draw(ctx)
}
func (c *Composer) Invalidate() {
c.grid.Invalidate()
}
func (c *Composer) OnInvalidate(fn func(d ui.Drawable)) {
c.grid.OnInvalidate(func(_ ui.Drawable) {
fn(c)
})
}
func (c *Composer) Event(event tcell.Event) bool {
return c.focusable[c.focused].Event(event)
}
func (c *Composer) Focus(focus bool) {
c.focusable[c.focused].Focus(focus)
}
func (c *Composer) PrevField() {
c.focusable[c.focused].Focus(false)
c.focused--
if c.focused == -1 {
c.focused = len(c.focusable) - 1
}
c.focusable[c.focused].Focus(true)
}
func (c *Composer) NextField() {
c.focusable[c.focused].Focus(false)
c.focused = (c.focused + 1) % len(c.focusable)
c.focusable[c.focused].Focus(true)
}
func newHeaderEditor(name string, value string) *headerEditor {
return &headerEditor{
input: ui.NewTextInput(value),
name: name,
}
}
func (he *headerEditor) Draw(ctx *ui.Context) {
name := he.name + " "
size := runewidth.StringWidth(name)
ctx.Fill(0, 0, size, ctx.Height(), ' ', tcell.StyleDefault)
ctx.Printf(0, 0, tcell.StyleDefault.Bold(true), "%s", name)
he.input.Draw(ctx.Subcontext(size, 0, ctx.Width()-size, 1))
}
func (he *headerEditor) Invalidate() {
he.input.Invalidate()
}
func (he *headerEditor) OnInvalidate(fn func(ui.Drawable)) {
he.input.OnInvalidate(func(_ ui.Drawable) {
fn(he)
})
}
func (he *headerEditor) Focus(focused bool) {
he.input.Focus(focused)
}
func (he *headerEditor) Event(event tcell.Event) bool {
return he.input.Event(event)
}