func buttons(bs *ink.ButtonSet, rs *ink.RadioSet, t *ink.Txt) {
in := bs.Events()
rs.SendEventsTo(in)
for ev := range in {
cmd.Warn("buttons: %v", ev.Args)
if ev.Args[0] == "Set" {
s := style
if bold {
s += "b"
}
if italic {
s += "i"
}
t.SetFont(s)
}
}
}
func main() {
opts := opt.New("[file]")
c := cmd.AppCtx()
opts.NewFlag("D", "debug", &c.Debug)
rdonly := false
opts.NewFlag("r", "read only", &rdonly)
opts.NewFlag("e", "do edits for testing", &doedits)
cmd.UnixIO("err")
args := opts.Parse()
var t *ink.Txt
inkout := cmd.Out("ink")
if inkout == nil {
cmd.UnixIO()
}
if len(args) == 0 {
t = ink.NewTxt("1234", "abc")
} else {
dat, err := zx.GetAll(cmd.NS(), cmd.AbsPath(args[0]))
if err != nil {
cmd.Fatal(err)
}
t = ink.NewTxt(args[0]+" Del", string(dat))
}
go edit(t)
if rdonly {
t.NoEdits()
}
ink.UsePort("8182")
bs := ink.NewButtonSet(&ink.Button{Tag: "One", Name: "one"},
&ink.Button{Tag: "Two", Name: "two"},
&ink.Button{Tag: "B", Name: "b", Value: &bold},
&ink.Button{Tag: "I", Name: "i", Value: &italic})
rs := ink.NewRadioSet(&style, &ink.Button{Tag: "R", Name: "r"},
&ink.Button{Tag: "T", Name: "t"})
go buttons(bs, rs, t)
pg := ink.NewPg("/", "Example text editing:", bs, rs, t)
pg.Tag = "Clive's iedit"
if doedits {
go edits(t)
}
go ink.Serve()
if inkout != nil {
// TODO: ctlrs must use unique ids sytem-wide, or
// controls written won't work because of their ids.
inkout <- []byte(`<tt>Hi there, this is HTML</tt>`)
var buf bytes.Buffer
bs.WriteTo(&buf)
inkout <- buf.Bytes()
inkout <- []byte("https://localhost:8182")
}
t.Wait()
for rs := range t.Get(0, -1) {
cmd.Printf("%s", string(rs))
}
}
func edit(t *ink.Txt) {
in := t.Events()
for ev := range in {
cmd.Warn("got text: %v", ev.Args)
switch ev.Args[0] {
case "start":
continue
// Example: keep only a single view
vs := t.Views()
for _, v := range vs {
if v != ev.Src {
t.CloseView(v)
}
}
// Example: do some edits from the program.
go edits(t)
case "tag":
if len(ev.Args) == 1 || ev.Args[1] != "Del" {
continue
}
t.Close()
case "end":
// Example: delete the text when all views are gone
vs := t.Views()
cmd.Dprintf("views %v\n", t.Views())
if len(vs) == 0 {
t.Close()
return
}
}
}
}
// Example of how to update the text from the API while the user edits it,
// again, mostly for testing.
func edits(t *ink.Txt) {
time.Sleep(5 * time.Second)
t.Ins([]rune("ZZZ\n"), 3)
time.Sleep(1 * time.Second)
rs := t.Del(3, 4)
cmd.Dprintf("did del %s\n", string(rs))
time.Sleep(1 * time.Second)
x := t.GetText()
x.Ins([]rune("XXX\n"), 2)
x.Ins([]rune("XXX\n"), x.Len())
t.SetMark("xx", 30)
t.PutText()
for i := 0; i < 30; i++ {
time.Sleep(time.Second)
t.MarkIns("xx", []rune(fmt.Sprintf("--%d--\n", i)))
}
}