gum/input/input.go

// Package input provides a shell script interface for the text input bubble.
// https://github.com/charmbracelet/bubbles/tree/master/textinput
//
// It can be used to prompt the user for some input. The text the user entered
// will be sent to stdout.
//
//   $ gum input --placeholder "What's your favorite gum?" > answer.text
//
package input

import (
	"github.com/charmbracelet/bubbles/textinput"
	tea "github.com/charmbracelet/bubbletea"
	"github.com/charmbracelet/lipgloss"
)

type model struct {
	textinput textinput.Model
	autosize  bool
}

func (m model) Init() tea.Cmd { return textinput.Blink }
func (m model) View() string  { return m.textinput.View() }
func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
	switch msg := msg.(type) {
	case tea.WindowSizeMsg:
		if !m.autosize {
			return m, nil
		}
		m.textinput.Width = msg.Width - (lipgloss.Width(m.textinput.Prompt) + 1)
		return m, nil
	case tea.KeyMsg:
		switch msg.Type {
		case tea.KeyEscape, tea.KeyCtrlC, tea.KeyEnter:
			return m, tea.Quit
		}
	}

	var cmd tea.Cmd
	m.textinput, cmd = m.textinput.Update(msg)
	return m, cmd
}