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package chat
import (
"os"
"os/exec"
"github.com/charmbracelet/bubbles/key"
"github.com/charmbracelet/bubbles/textarea"
tea "github.com/charmbracelet/bubbletea"
"github.com/charmbracelet/lipgloss"
"github.com/opencode-ai/opencode/internal/app"
"github.com/opencode-ai/opencode/internal/session"
"github.com/opencode-ai/opencode/internal/tui/components/dialog"
"github.com/opencode-ai/opencode/internal/tui/layout"
"github.com/opencode-ai/opencode/internal/tui/styles"
"github.com/opencode-ai/opencode/internal/tui/theme"
"github.com/opencode-ai/opencode/internal/tui/util"
)
type editorCmp struct {
app *app.App
session session.Session
textarea textarea.Model
}
type EditorKeyMaps struct {
Send key.Binding
OpenEditor key.Binding
}
type bluredEditorKeyMaps struct {
Send key.Binding
Focus key.Binding
OpenEditor key.Binding
}
var editorMaps = EditorKeyMaps{
Send: key.NewBinding(
key.WithKeys("enter", "ctrl+s"),
key.WithHelp("enter", "send message"),
),
OpenEditor: key.NewBinding(
key.WithKeys("ctrl+e"),
key.WithHelp("ctrl+e", "open editor"),
),
}
func openEditor() tea.Cmd {
editor := os.Getenv("EDITOR")
if editor == "" {
editor = "nvim"
}
tmpfile, err := os.CreateTemp("", "msg_*.md")
if err != nil {
return util.ReportError(err)
}
tmpfile.Close()
c := exec.Command(editor, tmpfile.Name()) //nolint:gosec
c.Stdin = os.Stdin
c.Stdout = os.Stdout
c.Stderr = os.Stderr
return tea.ExecProcess(c, func(err error) tea.Msg {
if err != nil {
return util.ReportError(err)
}
content, err := os.ReadFile(tmpfile.Name())
if err != nil {
return util.ReportError(err)
}
if len(content) == 0 {
return util.ReportWarn("Message is empty")
}
os.Remove(tmpfile.Name())
return SendMsg{
Text: string(content),
}
})
}
func (m *editorCmp) Init() tea.Cmd {
return textarea.Blink
}
func (m *editorCmp) send() tea.Cmd {
if m.app.CoderAgent.IsSessionBusy(m.session.ID) {
return util.ReportWarn("Agent is working, please wait...")
}
value := m.textarea.Value()
m.textarea.Reset()
if value == "" {
return nil
}
return tea.Batch(
util.CmdHandler(SendMsg{
Text: value,
}),
)
}
func (m *editorCmp) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
var cmd tea.Cmd
switch msg := msg.(type) {
case dialog.ThemeChangedMsg:
m.textarea = CreateTextArea(&m.textarea)
return m, nil
case SessionSelectedMsg:
if msg.ID != m.session.ID {
m.session = msg
}
return m, nil
case tea.KeyMsg:
if key.Matches(msg, messageKeys.PageUp) || key.Matches(msg, messageKeys.PageDown) ||
key.Matches(msg, messageKeys.HalfPageUp) || key.Matches(msg, messageKeys.HalfPageDown) {
return m, nil
}
if key.Matches(msg, editorMaps.OpenEditor) {
if m.app.CoderAgent.IsSessionBusy(m.session.ID) {
return m, util.ReportWarn("Agent is working, please wait...")
}
return m, openEditor()
}
// Handle Enter key
if m.textarea.Focused() && key.Matches(msg, editorMaps.Send) {
value := m.textarea.Value()
if len(value) > 0 && value[len(value)-1] == '\\' {
// If the last character is a backslash, remove it and add a newline
m.textarea.SetValue(value[:len(value)-1] + "\n")
return m, nil
} else {
// Otherwise, send the message
return m, m.send()
}
}
}
m.textarea, cmd = m.textarea.Update(msg)
return m, cmd
}
func (m *editorCmp) View() string {
t := theme.CurrentTheme()
// Style the prompt with theme colors
style := lipgloss.NewStyle().
Padding(0, 0, 0, 1).
Bold(true).
Foreground(t.Primary())
return lipgloss.JoinHorizontal(lipgloss.Top, style.Render(">"), m.textarea.View())
}
func (m *editorCmp) SetSize(width, height int) tea.Cmd {
m.textarea.SetWidth(width - 3) // account for the prompt and padding right
m.textarea.SetHeight(height)
return nil
}
func (m *editorCmp) GetSize() (int, int) {
return m.textarea.Width(), m.textarea.Height()
}
func (m *editorCmp) BindingKeys() []key.Binding {
bindings := []key.Binding{}
bindings = append(bindings, layout.KeyMapToSlice(editorMaps)...)
return bindings
}
func CreateTextArea(existing *textarea.Model) textarea.Model {
t := theme.CurrentTheme()
bgColor := t.Background()
textColor := t.Text()
textMutedColor := t.TextMuted()
ta := textarea.New()
ta.BlurredStyle.Base = styles.BaseStyle().Background(bgColor).Foreground(textColor)
ta.BlurredStyle.CursorLine = styles.BaseStyle().Background(bgColor)
ta.BlurredStyle.Placeholder = styles.BaseStyle().Background(bgColor).Foreground(textMutedColor)
ta.BlurredStyle.Text = styles.BaseStyle().Background(bgColor).Foreground(textColor)
ta.FocusedStyle.Base = styles.BaseStyle().Background(bgColor).Foreground(textColor)
ta.FocusedStyle.CursorLine = styles.BaseStyle().Background(bgColor)
ta.FocusedStyle.Placeholder = styles.BaseStyle().Background(bgColor).Foreground(textMutedColor)
ta.FocusedStyle.Text = styles.BaseStyle().Background(bgColor).Foreground(textColor)
ta.Prompt = " "
ta.ShowLineNumbers = false
ta.CharLimit = -1
if existing != nil {
ta.SetValue(existing.Value())
ta.SetWidth(existing.Width())
ta.SetHeight(existing.Height())
}
ta.Focus()
return ta
}
func NewEditorCmp(app *app.App) tea.Model {
ta := CreateTextArea(nil)
return &editorCmp{
app: app,
textarea: ta,
}
}
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