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Add an optional character limit to text inputs

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This commit is contained in:
Christian Rocha 2020-04-01 20:51:09 -04:00
parent 7ddc284804
commit ea5161af98
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GPG Key ID: D6CC7A16E5878018
1 changed files with 9 additions and 3 deletions
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12
input/input.go
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@ -23,6 +23,10 @@ type Model struct {
PlaceholderColor string PlaceholderColor string
CursorColor string CursorColor string
// CharLimit is the maximum amount of characters this input element will
// accept. If 0 or less, there's no limit.
CharLimit int
// Focus indicates whether user input focus should be on this input // Focus indicates whether user input focus should be on this input
// component. When false, don't blink and ignore keyboard input. // component. When false, don't blink and ignore keyboard input.
focus bool focus bool
@ -138,9 +142,11 @@ func Update(msg tea.Msg, m Model) (Model, tea.Cmd) {
m.Value = m.Value[m.pos:] m.Value = m.Value[m.pos:]
m.pos = 0 m.pos = 0
return m, nil return m, nil
case tea.KeyRune: case tea.KeyRune: // input a regular character
m.Value = m.Value[:m.pos] + string(msg.Rune) + m.Value[m.pos:] if m.CharLimit > 0 && len(m.Value) < m.CharLimit {
m.pos++ m.Value = m.Value[:m.pos] + string(msg.Rune) + m.Value[m.pos:]
m.pos++
}
return m, nil return m, nil
default: default:
return m, nil return m, nil