Files
ollama/cmd/tui/selector.go
2026-02-09 11:30:16 -08:00

508 lines
11 KiB
Go

package tui
import (
"errors"
"fmt"
"strings"
tea "github.com/charmbracelet/bubbletea"
"github.com/charmbracelet/lipgloss"
)
var (
selectorTitleStyle = lipgloss.NewStyle().
Bold(true)
selectorItemStyle = lipgloss.NewStyle().
PaddingLeft(4)
selectorSelectedItemStyle = lipgloss.NewStyle().
PaddingLeft(2).
Bold(true)
selectorDescStyle = lipgloss.NewStyle().
Foreground(lipgloss.Color("241"))
selectorFilterStyle = lipgloss.NewStyle().
Foreground(lipgloss.Color("241")).
Italic(true)
selectorInputStyle = lipgloss.NewStyle().
Foreground(lipgloss.Color("252"))
selectorCheckboxStyle = lipgloss.NewStyle().
Foreground(lipgloss.Color("241"))
selectorCheckboxCheckedStyle = lipgloss.NewStyle().
Bold(true)
selectorDefaultTagStyle = lipgloss.NewStyle().
Foreground(lipgloss.Color("241")).
Italic(true)
selectorHelpStyle = lipgloss.NewStyle().
Foreground(lipgloss.Color("241"))
selectorMoreStyle = lipgloss.NewStyle().
PaddingLeft(4).
Foreground(lipgloss.Color("241")).
Italic(true)
)
const maxSelectorItems = 10
// ErrCancelled is returned when the user cancels the selection.
var ErrCancelled = errors.New("cancelled")
// SelectItem represents an item that can be selected.
type SelectItem struct {
Name string
Description string
}
// selectorModel is the bubbletea model for single selection.
type selectorModel struct {
title string
items []SelectItem
filter string
cursor int
scrollOffset int
selected string
cancelled bool
}
func (m selectorModel) filteredItems() []SelectItem {
if m.filter == "" {
return m.items
}
filterLower := strings.ToLower(m.filter)
var result []SelectItem
for _, item := range m.items {
if strings.Contains(strings.ToLower(item.Name), filterLower) {
result = append(result, item)
}
}
return result
}
func (m selectorModel) Init() tea.Cmd {
return nil
}
func (m selectorModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
switch msg := msg.(type) {
case tea.KeyMsg:
filtered := m.filteredItems()
switch msg.Type {
case tea.KeyCtrlC, tea.KeyEsc:
m.cancelled = true
return m, tea.Quit
case tea.KeyEnter:
if len(filtered) > 0 && m.cursor < len(filtered) {
m.selected = filtered[m.cursor].Name
}
return m, tea.Quit
case tea.KeyUp:
if m.cursor > 0 {
m.cursor--
if m.cursor < m.scrollOffset {
m.scrollOffset = m.cursor
}
}
case tea.KeyDown:
if m.cursor < len(filtered)-1 {
m.cursor++
if m.cursor >= m.scrollOffset+maxSelectorItems {
m.scrollOffset = m.cursor - maxSelectorItems + 1
}
}
case tea.KeyPgUp:
m.cursor -= maxSelectorItems
if m.cursor < 0 {
m.cursor = 0
}
m.scrollOffset -= maxSelectorItems
if m.scrollOffset < 0 {
m.scrollOffset = 0
}
case tea.KeyPgDown:
m.cursor += maxSelectorItems
if m.cursor >= len(filtered) {
m.cursor = len(filtered) - 1
}
if m.cursor >= m.scrollOffset+maxSelectorItems {
m.scrollOffset = m.cursor - maxSelectorItems + 1
}
case tea.KeyBackspace:
if len(m.filter) > 0 {
m.filter = m.filter[:len(m.filter)-1]
m.cursor = 0
m.scrollOffset = 0
}
case tea.KeyRunes:
m.filter += string(msg.Runes)
m.cursor = 0
m.scrollOffset = 0
}
}
return m, nil
}
func (m selectorModel) View() string {
// Clear screen when exiting
if m.cancelled || m.selected != "" {
return ""
}
var s strings.Builder
// Title with filter
s.WriteString(selectorTitleStyle.Render(m.title))
s.WriteString(" ")
if m.filter == "" {
s.WriteString(selectorFilterStyle.Render("Type to filter..."))
} else {
s.WriteString(selectorInputStyle.Render(m.filter))
}
s.WriteString("\n\n")
filtered := m.filteredItems()
if len(filtered) == 0 {
s.WriteString(selectorItemStyle.Render(selectorDescStyle.Render("(no matches)")))
s.WriteString("\n")
} else {
displayCount := min(len(filtered), maxSelectorItems)
for i := range displayCount {
idx := m.scrollOffset + i
if idx >= len(filtered) {
break
}
item := filtered[idx]
if idx == m.cursor {
s.WriteString(selectorSelectedItemStyle.Render("▸ " + item.Name))
} else {
s.WriteString(selectorItemStyle.Render(item.Name))
}
if item.Description != "" {
s.WriteString(" ")
s.WriteString(selectorDescStyle.Render("- " + item.Description))
}
s.WriteString("\n")
}
if remaining := len(filtered) - m.scrollOffset - displayCount; remaining > 0 {
s.WriteString(selectorMoreStyle.Render(fmt.Sprintf("... and %d more", remaining)))
s.WriteString("\n")
}
}
s.WriteString("\n")
s.WriteString(selectorHelpStyle.Render("↑/↓ navigate • enter select • esc cancel"))
return s.String()
}
// SelectSingle prompts the user to select a single item from a list.
func SelectSingle(title string, items []SelectItem) (string, error) {
if len(items) == 0 {
return "", fmt.Errorf("no items to select from")
}
m := selectorModel{
title: title,
items: items,
}
p := tea.NewProgram(m)
finalModel, err := p.Run()
if err != nil {
return "", fmt.Errorf("error running selector: %w", err)
}
fm := finalModel.(selectorModel)
if fm.cancelled {
return "", ErrCancelled
}
return fm.selected, nil
}
// multiSelectorModel is the bubbletea model for multi selection.
type multiSelectorModel struct {
title string
items []SelectItem
itemIndex map[string]int
filter string
cursor int
scrollOffset int
checked map[int]bool
checkOrder []int
cancelled bool
confirmed bool
}
func newMultiSelectorModel(title string, items []SelectItem, preChecked []string) multiSelectorModel {
m := multiSelectorModel{
title: title,
items: items,
itemIndex: make(map[string]int, len(items)),
checked: make(map[int]bool),
}
for i, item := range items {
m.itemIndex[item.Name] = i
}
for _, name := range preChecked {
if idx, ok := m.itemIndex[name]; ok {
m.checked[idx] = true
m.checkOrder = append(m.checkOrder, idx)
}
}
return m
}
func (m multiSelectorModel) filteredItems() []SelectItem {
if m.filter == "" {
return m.items
}
filterLower := strings.ToLower(m.filter)
var result []SelectItem
for _, item := range m.items {
if strings.Contains(strings.ToLower(item.Name), filterLower) {
result = append(result, item)
}
}
return result
}
func (m *multiSelectorModel) toggleItem() {
filtered := m.filteredItems()
if len(filtered) == 0 || m.cursor >= len(filtered) {
return
}
item := filtered[m.cursor]
origIdx := m.itemIndex[item.Name]
if m.checked[origIdx] {
delete(m.checked, origIdx)
for i, idx := range m.checkOrder {
if idx == origIdx {
m.checkOrder = append(m.checkOrder[:i], m.checkOrder[i+1:]...)
break
}
}
} else {
m.checked[origIdx] = true
m.checkOrder = append(m.checkOrder, origIdx)
}
}
func (m multiSelectorModel) selectedCount() int {
return len(m.checkOrder)
}
func (m multiSelectorModel) Init() tea.Cmd {
return nil
}
func (m multiSelectorModel) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
switch msg := msg.(type) {
case tea.KeyMsg:
filtered := m.filteredItems()
switch msg.Type {
case tea.KeyCtrlC, tea.KeyEsc:
m.cancelled = true
return m, tea.Quit
case tea.KeyEnter:
// Enter confirms if at least one item is selected
if len(m.checkOrder) > 0 {
m.confirmed = true
return m, tea.Quit
}
case tea.KeySpace:
// Space always toggles selection
m.toggleItem()
case tea.KeyUp:
if m.cursor > 0 {
m.cursor--
if m.cursor < m.scrollOffset {
m.scrollOffset = m.cursor
}
}
case tea.KeyDown:
if m.cursor < len(filtered)-1 {
m.cursor++
if m.cursor >= m.scrollOffset+maxSelectorItems {
m.scrollOffset = m.cursor - maxSelectorItems + 1
}
}
case tea.KeyPgUp:
m.cursor -= maxSelectorItems
if m.cursor < 0 {
m.cursor = 0
}
m.scrollOffset -= maxSelectorItems
if m.scrollOffset < 0 {
m.scrollOffset = 0
}
case tea.KeyPgDown:
m.cursor += maxSelectorItems
if m.cursor >= len(filtered) {
m.cursor = len(filtered) - 1
}
if m.cursor >= m.scrollOffset+maxSelectorItems {
m.scrollOffset = m.cursor - maxSelectorItems + 1
}
case tea.KeyBackspace:
if len(m.filter) > 0 {
m.filter = m.filter[:len(m.filter)-1]
m.cursor = 0
m.scrollOffset = 0
}
case tea.KeyRunes:
m.filter += string(msg.Runes)
m.cursor = 0
m.scrollOffset = 0
}
}
return m, nil
}
func (m multiSelectorModel) View() string {
// Clear screen when exiting
if m.cancelled || m.confirmed {
return ""
}
var s strings.Builder
// Title with filter
s.WriteString(selectorTitleStyle.Render(m.title))
s.WriteString(" ")
if m.filter == "" {
s.WriteString(selectorFilterStyle.Render("Type to filter..."))
} else {
s.WriteString(selectorInputStyle.Render(m.filter))
}
s.WriteString("\n\n")
filtered := m.filteredItems()
if len(filtered) == 0 {
s.WriteString(selectorItemStyle.Render(selectorDescStyle.Render("(no matches)")))
s.WriteString("\n")
} else {
displayCount := min(len(filtered), maxSelectorItems)
for i := range displayCount {
idx := m.scrollOffset + i
if idx >= len(filtered) {
break
}
item := filtered[idx]
origIdx := m.itemIndex[item.Name]
// Checkbox
var checkbox string
if m.checked[origIdx] {
checkbox = selectorCheckboxCheckedStyle.Render("[x]")
} else {
checkbox = selectorCheckboxStyle.Render("[ ]")
}
// Cursor and name
var line string
if idx == m.cursor {
line = selectorSelectedItemStyle.Render("▸ ") + checkbox + " " + selectorSelectedItemStyle.Render(item.Name)
} else {
line = " " + checkbox + " " + item.Name
}
// Default tag
if len(m.checkOrder) > 0 && m.checkOrder[0] == origIdx {
line += " " + selectorDefaultTagStyle.Render("(default)")
}
s.WriteString(line)
s.WriteString("\n")
}
if remaining := len(filtered) - m.scrollOffset - displayCount; remaining > 0 {
s.WriteString(selectorMoreStyle.Render(fmt.Sprintf("... and %d more", remaining)))
s.WriteString("\n")
}
}
s.WriteString("\n")
// Status line
count := m.selectedCount()
if count == 0 {
s.WriteString(selectorDescStyle.Render(" Select at least one model."))
} else {
s.WriteString(selectorDescStyle.Render(fmt.Sprintf(" %d selected - press enter to continue", count)))
}
s.WriteString("\n\n")
s.WriteString(selectorHelpStyle.Render("↑/↓ navigate • space toggle • enter confirm • esc cancel"))
return s.String()
}
// SelectMultiple prompts the user to select multiple items from a list.
func SelectMultiple(title string, items []SelectItem, preChecked []string) ([]string, error) {
if len(items) == 0 {
return nil, fmt.Errorf("no items to select from")
}
m := newMultiSelectorModel(title, items, preChecked)
p := tea.NewProgram(m)
finalModel, err := p.Run()
if err != nil {
return nil, fmt.Errorf("error running selector: %w", err)
}
fm := finalModel.(multiSelectorModel)
if fm.cancelled {
return nil, ErrCancelled
}
if !fm.confirmed {
return nil, ErrCancelled
}
var result []string
for _, idx := range fm.checkOrder {
result = append(result, fm.items[idx].Name)
}
return result, nil
}