forked from Mirrors/bubbletea
113 lines
2.1 KiB
Go
113 lines
2.1 KiB
Go
package main
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// A simple program demonstrating the text area component from the Bubbles
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// component library.
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import (
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"fmt"
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"log"
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"strings"
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"github.com/charmbracelet/bubbles/textarea"
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"github.com/charmbracelet/bubbles/viewport"
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tea "github.com/charmbracelet/bubbletea"
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"github.com/charmbracelet/lipgloss"
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)
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func main() {
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p := tea.NewProgram(initialModel())
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if err := p.Start(); err != nil {
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log.Fatal(err)
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}
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}
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type (
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tickMsg struct{}
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errMsg error
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)
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type model struct {
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viewport viewport.Model
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messages []string
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textarea textarea.Model
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senderStyle lipgloss.Style
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err error
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}
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func initialModel() model {
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ta := textarea.New()
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ta.Placeholder = "Send a message..."
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ta.Focus()
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ta.Prompt = "┃ "
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ta.CharLimit = 280
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ta.SetWidth(30)
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ta.SetHeight(3)
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// Remove cursor line styling
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ta.FocusedStyle.CursorLine = lipgloss.NewStyle()
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ta.ShowLineNumbers = false
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vp := viewport.New(30, 10)
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vp.SetContent(`Welcome to the Bubbles multi-line text input!
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Try typing any message and pressing ENTER.
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If you write a long message, it will automatically wrap :D
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`)
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ta.KeyMap.InsertNewline.SetEnabled(false)
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return model{
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textarea: ta,
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messages: []string{},
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viewport: vp,
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senderStyle: lipgloss.NewStyle().Foreground(lipgloss.Color("5")),
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err: nil,
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}
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}
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func (m model) Init() tea.Cmd {
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return textarea.Blink
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}
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func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
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var (
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tiCmd tea.Cmd
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vpCmd tea.Cmd
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)
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m.textarea, tiCmd = m.textarea.Update(msg)
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m.viewport, vpCmd = m.viewport.Update(msg)
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switch msg := msg.(type) {
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case tea.KeyMsg:
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switch msg.Type {
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case tea.KeyCtrlC, tea.KeyEsc:
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fmt.Println(m.textarea.Value())
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return m, tea.Quit
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case tea.KeyEnter:
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m.messages = append(m.messages, m.senderStyle.Render("You: ")+m.textarea.Value())
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m.viewport.SetContent(strings.Join(m.messages, "\n"))
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m.textarea.Reset()
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m.viewport.GotoBottom()
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}
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// We handle errors just like any other message
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case errMsg:
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m.err = msg
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return m, nil
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}
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return m, tea.Batch(tiCmd, vpCmd)
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}
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func (m model) View() string {
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return fmt.Sprintf(
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"%s\n\n%s",
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m.viewport.View(),
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m.textarea.View(),
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) + "\n\n"
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}
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