feat(tui): 支持多行输入与代码块交互

internal/tui/app.go

@@ -6,7 +6,7 @@ import (
 	"github.com/charmbracelet/bubbles/help"
 	"github.com/charmbracelet/bubbles/list"
 	"github.com/charmbracelet/bubbles/spinner"
-	"github.com/charmbracelet/bubbles/textinput"
+	"github.com/charmbracelet/bubbles/textarea"
 	"github.com/charmbracelet/bubbles/viewport"
 	tea "github.com/charmbracelet/bubbletea"
 	"github.com/charmbracelet/lipgloss"
@@ -28,8 +28,10 @@ type App struct {
 	providerPicker list.Model
 	modelPicker    list.Model
 	transcript     viewport.Model
-	input          textinput.Model
+	input          textarea.Model
 	activeMessages []provider.Message
+	codeBlocks     []codeBlockTarget
+	transcriptRect rect
 	focus          panel
 	width          int
 	height         int
@@ -63,13 +65,18 @@ func New(cfg *config.Config, configManager *config.Manager, runtime agentruntime
 	sessionList.FilterInput.Prompt = "Filter: "
 	sessionList.FilterInput.Placeholder = "Type to search sessions"
 
-	input := textinput.New()
+	input := textarea.New()
 	input.Placeholder = "Ask NeoCode to inspect, edit, or build. Type / to browse commands."
-	input.Prompt = ""
+	input.Prompt = "> "
 	input.CharLimit = 24000
-	input.PromptStyle = lipgloss.NewStyle().Foreground(lipgloss.Color(colorUser))
-	input.TextStyle = lipgloss.NewStyle().Foreground(lipgloss.Color(colorText))
-	input.PlaceholderStyle = lipgloss.NewStyle().Foreground(lipgloss.Color(colorSubtle))
+	input.ShowLineNumbers = false
+	input.EndOfBufferCharacter = ' '
+	input.SetHeight(1)
+	input.FocusedStyle.Base = lipgloss.NewStyle().Foreground(lipgloss.Color(colorText))
+	input.FocusedStyle.Text = lipgloss.NewStyle().Foreground(lipgloss.Color(colorText))
+	input.FocusedStyle.Placeholder = lipgloss.NewStyle().Foreground(lipgloss.Color(colorSubtle))
+	input.FocusedStyle.Prompt = lipgloss.NewStyle().Foreground(lipgloss.Color(colorUser)).Bold(true)
+	input.BlurredStyle = input.FocusedStyle
 	input.Cursor.Style = lipgloss.NewStyle().Foreground(lipgloss.Color(colorUser))
 	input.Focus()
 
@@ -130,5 +137,5 @@ func New(cfg *config.Config, configManager *config.Manager, runtime agentruntime
 }
 
 func (a App) Init() tea.Cmd {
-	return tea.Batch(ListenForRuntimeEvent(a.runtime.Events()), textinput.Blink, a.spinner.Tick)
+	return tea.Batch(ListenForRuntimeEvent(a.runtime.Events()), textarea.Blink, a.spinner.Tick)
 }

internal/tui/interaction.go

@@ -0,0 +1,117 @@
+package tui
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/atotto/clipboard"
+	"github.com/charmbracelet/bubbles/key"
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/lipgloss"
+)
+
+var writeClipboard = clipboard.WriteAll
+
+func (a *App) shouldSendInput(msg tea.KeyMsg) bool {
+	return key.Matches(msg, a.keys.Send)
+}
+
+func (a *App) handleMouse(msg tea.MouseMsg) {
+	if !a.transcriptRect.contains(msg.X, msg.Y) {
+		return
+	}
+
+	switch msg.Button { //nolint:exhaustive
+	case tea.MouseButtonWheelUp:
+		if msg.Action == tea.MouseActionPress {
+			a.focus = panelTranscript
+			a.applyFocus()
+			a.transcript.LineUp(3)
+		}
+	case tea.MouseButtonWheelDown:
+		if msg.Action == tea.MouseActionPress {
+			a.focus = panelTranscript
+			a.applyFocus()
+			a.transcript.LineDown(3)
+		}
+	case tea.MouseButtonLeft:
+		if msg.Action != tea.MouseActionPress {
+			return
+		}
+		if target := a.hitCodeBlockTarget(msg.X, msg.Y); target != nil {
+			a.copyCodeBlock(*target)
+			return
+		}
+		a.focus = panelTranscript
+		a.applyFocus()
+	}
+}
+
+func (a *App) hitCodeBlockTarget(mouseX int, mouseY int) *codeBlockTarget {
+	if !a.transcriptRect.contains(mouseX, mouseY) {
+		return nil
+	}
+
+	contentLine := a.transcript.YOffset + (mouseY - a.transcriptRect.Y)
+	contentX := mouseX - a.transcriptRect.X
+	for i := range a.codeBlocks {
+		target := &a.codeBlocks[i]
+		if target.Line != contentLine {
+			continue
+		}
+		if contentX >= target.X && contentX < target.X+target.Width {
+			return target
+		}
+	}
+	return nil
+}
+
+func (a *App) copyCodeBlock(target codeBlockTarget) {
+	if err := writeClipboard(target.Content); err != nil {
+		notice := fmt.Sprintf("Copy failed: %v", err)
+		a.state.ExecutionError = notice
+		a.state.StatusText = notice
+		a.appendInlineMessage(roleError, notice)
+		a.rebuildTranscript()
+		return
+	}
+
+	label := "code block"
+	if trimmed := strings.TrimSpace(target.Language); trimmed != "" && !strings.EqualFold(trimmed, "text") {
+		label = trimmed + " code block"
+	}
+	notice := fmt.Sprintf("Copied %s.", label)
+	a.state.ExecutionError = ""
+	a.state.StatusText = notice
+	a.appendInlineMessage(roleSystem, notice)
+	a.rebuildTranscript()
+}
+
+func (a *App) composerRows(availableWidth int) int {
+	width := max(8, availableWidth-lipgloss.Width(a.input.Prompt))
+	lines := wrappedLineCount(a.input.Value(), width)
+	if strings.TrimSpace(a.input.Value()) == "" {
+		lines = max(lines, 1)
+	}
+	return clamp(lines, 1, 8)
+}
+
+func (a *App) updateTranscriptRect(lay layout) {
+	docX := a.styles.doc.GetPaddingLeft()
+	docY := a.styles.doc.GetPaddingTop()
+	headerHeight := lipgloss.Height(a.renderHeader(lay.contentWidth))
+	rightX := docX
+	rightY := docY + headerHeight
+	if lay.stacked {
+		rightY += lay.sidebarHeight
+	} else {
+		rightX += lay.sidebarWidth + lay.bodyGap
+	}
+
+	a.transcriptRect = rect{
+		X:      rightX,
+		Y:      rightY,
+		Width:  a.transcript.Width,
+		Height: a.transcript.Height,
+	}
+}

internal/tui/keymap.go

@@ -23,64 +23,64 @@ type keyMap struct {
 func newKeyMap() keyMap {
 	return keyMap{
 		Send: key.NewBinding(
-			key.WithKeys("enter", "ctrl+s"),
-			key.WithHelp("Enter/Ctrl+S", "发送（输入框）"),
+			key.WithKeys("ctrl+j"),
+			key.WithHelp("Ctrl+J", "send"),
 		),
 		CancelAgent: key.NewBinding(
 			key.WithKeys("ctrl+w"),
-			key.WithHelp("Ctrl+w", "中止"),
+			key.WithHelp("Ctrl+W", "cancel"),
 		),
 		NewSession: key.NewBinding(
 			key.WithKeys("ctrl+n"),
-			key.WithHelp("Ctrl+N", "新会话"),
+			key.WithHelp("Ctrl+N", "new"),
 		),
 		NextPanel: key.NewBinding(
 			key.WithKeys("tab"),
-			key.WithHelp("Tab", "下个面板"),
+			key.WithHelp("Tab", "next panel"),
 		),
 		PrevPanel: key.NewBinding(
 			key.WithKeys("shift+tab"),
-			key.WithHelp("Shift+Tab", "上个面板"),
+			key.WithHelp("Shift+Tab", "prev panel"),
 		),
 		FocusInput: key.NewBinding(
 			key.WithKeys("esc"),
-			key.WithHelp("Esc", "聚焦输入框"),
+			key.WithHelp("Esc", "focus input"),
 		),
 		OpenSession: key.NewBinding(
 			key.WithKeys("enter"),
-			key.WithHelp("Enter", "打开会话"),
+			key.WithHelp("Enter", "open session"),
 		),
 		ToggleHelp: key.NewBinding(
 			key.WithKeys("ctrl+q"),
-			key.WithHelp("Ctrl+Q", "帮助"),
+			key.WithHelp("Ctrl+Q", "help"),
 		),
 		Quit: key.NewBinding(
 			key.WithKeys("ctrl+u"),
-			key.WithHelp("Ctrl+U", "退出"),
+			key.WithHelp("Ctrl+U", "quit"),
 		),
 		ScrollUp: key.NewBinding(
 			key.WithKeys("up", "k"),
-			key.WithHelp("Up/k", "向上滚动"),
+			key.WithHelp("Up/k", "scroll up"),
 		),
 		ScrollDown: key.NewBinding(
 			key.WithKeys("down", "j"),
-			key.WithHelp("Down/j", "向下滚动"),
+			key.WithHelp("Down/j", "scroll down"),
 		),
 		PageUp: key.NewBinding(
 			key.WithKeys("pgup", "b"),
-			key.WithHelp("PgUp/b", "向上翻页"),
+			key.WithHelp("PgUp/b", "page up"),
 		),
 		PageDown: key.NewBinding(
 			key.WithKeys("pgdown", "f"),
-			key.WithHelp("PgDn/f", "向下翻页"),
+			key.WithHelp("PgDn/f", "page down"),
 		),
 		Top: key.NewBinding(
 			key.WithKeys("g", "home"),
-			key.WithHelp("g/Home", "跳到顶部"),
+			key.WithHelp("g/Home", "top"),
 		),
 		Bottom: key.NewBinding(
 			key.WithKeys("G", "end"),
-			key.WithHelp("G/End", "跳到底部"),
+			key.WithHelp("G/End", "bottom"),
 		),
 	}
 }

internal/tui/state.go

@@ -56,6 +56,27 @@ type activityEntry struct {
 	IsError bool
 }
 
+type rect struct {
+	X      int
+	Y      int
+	Width  int
+	Height int
+}
+
+func (r rect) contains(x int, y int) bool {
+	return x >= r.X && x < r.X+r.Width && y >= r.Y && y < r.Y+r.Height
+}
+
+type codeBlockTarget struct {
+	MessageIndex int
+	BlockIndex   int
+	Language     string
+	Content      string
+	Line         int
+	X            int
+	Width        int
+}
+
 type sessionItem struct {
 	Summary agentruntime.SessionSummary
 	Active  bool

internal/tui/styles.go

@@ -55,6 +55,9 @@ type styles struct {
 	inlineNotice      lipgloss.Style
 	inlineError       lipgloss.Style
 	inlineSystem      lipgloss.Style
+	codeHeader        lipgloss.Style
+	codeLanguage      lipgloss.Style
+	codeCopy          lipgloss.Style
 	codeBlock         lipgloss.Style
 	codeText          lipgloss.Style
 	commandMenu       lipgloss.Style
@@ -176,8 +179,16 @@ func newStyles() styles {
 			Foreground(lipgloss.Color(colorSubtle)).
 			Background(lipgloss.Color(colorPanel)).
 			Padding(0, 1),
+		codeHeader: lipgloss.NewStyle().
+			Foreground(lipgloss.Color(colorText)).
+			Background(lipgloss.Color(colorPanelAlt)),
+		codeLanguage: lipgloss.NewStyle().
+			Bold(true).
+			Foreground(lipgloss.Color(colorPrimary)),
+		codeCopy: lipgloss.NewStyle().
+			Bold(true).
+			Foreground(lipgloss.Color(colorSuccess)),
 		codeBlock: lipgloss.NewStyle().
-			MarginLeft(1).
 			Padding(0, 1).
 			Background(lipgloss.Color(colorCode)).
 			BorderLeft(true).