Add input module from github.com/charmbracelet/tea

This commit is contained in:
Christian Rocha 2020-01-18 10:57:38 -05:00
parent dc95a3f19b
commit c83a0bee59
No known key found for this signature in database
GPG Key ID: D6CC7A16E5878018
4 changed files with 106 additions and 0 deletions

5
go.mod Normal file
View File

@ -0,0 +1,5 @@
module github.com/charmbracelet/teaparty
go 1.13
require github.com/charmbracelet/tea v0.0.0-20200118154546-df52853f9d94 // indirect

4
go.sum Normal file
View File

@ -0,0 +1,4 @@
github.com/charmbracelet/tea v0.0.0-20200118154546-df52853f9d94 h1:m2xhUqOw6OcefbPBR9Il0J0n0gB1663NoKU+vvkiLdU=
github.com/charmbracelet/tea v0.0.0-20200118154546-df52853f9d94/go.mod h1:lijy1lXOKNwMjBu/jTT/DvR8yE9PhtX2olGFsCz9/Vk=
github.com/pkg/term v0.0.0-20190109203006-aa71e9d9e942 h1:A7GG7zcGjl3jqAqGPmcNjd/D9hzL95SuoOQAaFNdLU0=
github.com/pkg/term v0.0.0-20190109203006-aa71e9d9e942/go.mod h1:eCbImbZ95eXtAUIbLAuAVnBnwf83mjf6QIVH8SHYwqQ=

96
input/input.go Normal file
View File

@ -0,0 +1,96 @@
package input
import (
"time"
"github.com/charmbracelet/tea"
)
type Model struct {
Prompt string
Value string
Cursor string
HiddenCursor string
BlinkSpeed time.Duration
blink bool
pos int
}
type CursorBlinkMsg struct{}
func DefaultModel() Model {
return Model{
Prompt: "> ",
Value: "",
BlinkSpeed: time.Millisecond * 600,
blink: false,
pos: 0,
}
}
func Update(msg tea.Msg, m Model) (Model, tea.Cmd) {
switch msg := msg.(type) {
case tea.KeyMsg:
switch msg.Type {
case tea.KeyBackspace:
if len(m.Value) > 0 {
m.Value = m.Value[:m.pos-1] + m.Value[m.pos:]
m.pos--
}
return m, nil
case tea.KeyLeft:
if m.pos > 0 {
m.pos--
}
return m, nil
case tea.KeyRight:
if m.pos < len(m.Value) {
m.pos++
}
return m, nil
case tea.KeyRune:
m.Value = m.Value[:m.pos] + msg.String() + m.Value[m.pos:]
m.pos++
return m, nil
default:
return m, nil
}
case CursorBlinkMsg:
m.blink = !m.blink
return m, nil
default:
return m, nil
}
}
func View(model tea.Model) string {
m, _ := model.(Model)
v := m.Value[:m.pos]
if m.pos < len(m.Value) {
v += cursor(string(m.Value[m.pos]), m.blink)
v += m.Value[m.pos+1:]
} else {
v += cursor(" ", m.blink)
}
return m.Prompt + v
}
// Style the cursor
func cursor(s string, blink bool) string {
if blink {
return s
}
return tea.Invert(s)
}
// Subscription
func Blink(model tea.Model) tea.Msg {
m, _ := model.(Model)
time.Sleep(m.BlinkSpeed)
return CursorBlinkMsg{}
}

1
teaparty.go Normal file
View File

@ -0,0 +1 @@
package teaparty