Rename input to textinput + DefaultModel is now NewModel

examples/textinputs/main.go

@@ -0,0 +1,192 @@
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/charmbracelet/tea"
+	input "github.com/charmbracelet/teaparty/textinput"
+	te "github.com/muesli/termenv"
+)
+
+var (
+	color               = te.ColorProfile().Color
+	focusedText         = "205"
+	focusedPrompt       = te.String("> ").Foreground(color("205")).String()
+	blurredPrompt       = "> "
+	focusedSubmitButton = "[ " + te.String("Submit").Foreground(color("205")).String() + " ]"
+	blurredSubmitButton = "[ " + te.String("Submit").Foreground(color("240")).String() + " ]"
+)
+
+func main() {
+	if err := tea.NewProgram(
+		initialize,
+		update,
+		view,
+		subscriptions,
+	).Start(); err != nil {
+		fmt.Printf("could not start program: %s\n", err)
+		os.Exit(1)
+	}
+}
+
+type Model struct {
+	index         int
+	nameInput     input.Model
+	nickNameInput input.Model
+	emailInput    input.Model
+	submitButton  string
+}
+
+func initialize() (tea.Model, tea.Cmd) {
+	name := input.NewModel()
+	name.Placeholder = "Name"
+	name.Focus()
+	name.Prompt = focusedPrompt
+	name.TextColor = focusedText
+
+	nickName := input.NewModel()
+	nickName.Placeholder = "Nickname"
+	nickName.Prompt = blurredPrompt
+
+	email := input.NewModel()
+	email.Placeholder = "Email"
+	email.Prompt = blurredPrompt
+
+	return Model{0, name, nickName, email, blurredSubmitButton}, nil
+}
+
+func update(msg tea.Msg, model tea.Model) (tea.Model, tea.Cmd) {
+	m, ok := model.(Model)
+	if !ok {
+		panic("could not perform assertion on model")
+	}
+
+	switch msg := msg.(type) {
+
+	case tea.KeyMsg:
+		switch msg.String() {
+
+		case "ctrl+c":
+			return m, tea.Quit
+
+		// Cycle between inputs
+		case "tab":
+			fallthrough
+		case "shift+tab":
+			fallthrough
+		case "enter":
+			fallthrough
+		case "up":
+			fallthrough
+		case "down":
+			inputs := []input.Model{
+				m.nameInput,
+				m.nickNameInput,
+				m.emailInput,
+			}
+
+			s := msg.String()
+
+			// Did the user press enter while the submit button was focused?
+			// If so, exit.
+			if s == "enter" && m.index == len(inputs) {
+				return m, tea.Quit
+			}
+
+			// Cycle indexes
+			if s == "up" || s == "shift+tab" {
+				m.index--
+			} else {
+				m.index++
+			}
+
+			if m.index > len(inputs) {
+				m.index = 0
+			} else if m.index < 0 {
+				m.index = len(inputs)
+			}
+
+			for i := 0; i <= len(inputs)-1; i++ {
+				if i == m.index {
+					// Focused input
+					inputs[i].Focus()
+					inputs[i].Prompt = focusedPrompt
+					inputs[i].TextColor = focusedText
+					continue
+				}
+				// Blurred input
+				inputs[i].Blur()
+				inputs[i].Prompt = blurredPrompt
+				inputs[i].TextColor = ""
+			}
+
+			m.nameInput = inputs[0]
+			m.nickNameInput = inputs[1]
+			m.emailInput = inputs[2]
+
+			if m.index == len(inputs) {
+				m.submitButton = focusedSubmitButton
+			} else {
+				m.submitButton = blurredSubmitButton
+			}
+
+			return m, nil
+
+		default:
+			// Handle character input
+			m = updateInputs(msg, m)
+			return m, nil
+		}
+
+	default:
+		// Handle blinks
+		m = updateInputs(msg, m)
+		return m, nil
+	}
+}
+
+func updateInputs(msg tea.Msg, m Model) Model {
+	m.nameInput, _ = input.Update(msg, m.nameInput)
+	m.nickNameInput, _ = input.Update(msg, m.nickNameInput)
+	m.emailInput, _ = input.Update(msg, m.emailInput)
+	return m
+}
+
+func subscriptions(model tea.Model) tea.Subs {
+	return tea.Subs{
+		// It's a little hacky, but we're using the subscription from one
+		// input element to handle the blinking for all elements. It doesn't
+		// have to be this way, we're just feeling a bit lazy at the moment.
+		"blink": func(model tea.Model) tea.Msg {
+			m, _ := model.(Model)
+			return input.Blink(m.nameInput)
+		},
+	}
+}
+
+func view(model tea.Model) string {
+	m, ok := model.(Model)
+	if !ok {
+		return "[error] could not perform assertion on model"
+	}
+
+	s := "\n"
+
+	inputs := []string{
+		input.View(m.nameInput),
+		input.View(m.nickNameInput),
+		input.View(m.emailInput),
+	}
+
+	for i := 0; i < len(inputs); i++ {
+		s += inputs[i]
+		if i < len(inputs)-1 {
+			s += "\n"
+		}
+	}
+
+	s += "\n\n" + m.submitButton + "\n"
+
+	return s
+}