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package dialog
import (
"strings"
"github.com/charmbracelet/bubbles/key"
tea "github.com/charmbracelet/bubbletea"
"github.com/charmbracelet/lipgloss"
"github.com/sst/opencode/internal/styles"
"github.com/sst/opencode/internal/theme"
)
type helpCmp struct {
width int
height int
keys []key.Binding
}
func (h *helpCmp) Init() tea.Cmd {
return nil
}
func (h *helpCmp) SetBindings(k []key.Binding) {
h.keys = k
}
func (h *helpCmp) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
switch msg := msg.(type) {
case tea.WindowSizeMsg:
h.width = 90
h.height = msg.Height
}
return h, nil
}
func removeDuplicateBindings(bindings []key.Binding) []key.Binding {
seen := make(map[string]struct{})
result := make([]key.Binding, 0, len(bindings))
// Process bindings in reverse order
for i := len(bindings) - 1; i >= 0; i-- {
b := bindings[i]
k := strings.Join(b.Keys(), " ")
if _, ok := seen[k]; ok {
// duplicate, skip
continue
}
seen[k] = struct{}{}
// Add to the beginning of result to maintain original order
result = append([]key.Binding{b}, result...)
}
return result
}
func (h *helpCmp) render() string {
t := theme.CurrentTheme()
baseStyle := styles.BaseStyle()
helpKeyStyle := styles.Bold().
Background(t.Background()).
Foreground(t.Text()).
Padding(0, 1, 0, 0)
helpDescStyle := styles.Regular().
Background(t.Background()).
Foreground(t.TextMuted())
// Compile list of bindings to render
bindings := removeDuplicateBindings(h.keys)
// Enumerate through each group of bindings, populating a series of
// pairs of columns, one for keys, one for descriptions
var (
pairs []string
width int
rows = 12 - 2
)
for i := 0; i < len(bindings); i += rows {
var (
keys []string
descs []string
)
for j := i; j < min(i+rows, len(bindings)); j++ {
keys = append(keys, helpKeyStyle.Render(bindings[j].Help().Key))
descs = append(descs, helpDescStyle.Render(bindings[j].Help().Desc))
}
// Render pair of columns; beyond the first pair, render a three space
// left margin, in order to visually separate the pairs.
var cols []string
if len(pairs) > 0 {
cols = []string{baseStyle.Render(" ")}
}
maxDescWidth := 0
for _, desc := range descs {
if maxDescWidth < lipgloss.Width(desc) {
maxDescWidth = lipgloss.Width(desc)
}
}
for i := range descs {
remainingWidth := maxDescWidth - lipgloss.Width(descs[i])
if remainingWidth > 0 {
descs[i] = descs[i] + baseStyle.Render(strings.Repeat(" ", remainingWidth))
}
}
maxKeyWidth := 0
for _, key := range keys {
if maxKeyWidth < lipgloss.Width(key) {
maxKeyWidth = lipgloss.Width(key)
}
}
for i := range keys {
remainingWidth := maxKeyWidth - lipgloss.Width(keys[i])
if remainingWidth > 0 {
keys[i] = keys[i] + baseStyle.Render(strings.Repeat(" ", remainingWidth))
}
}
cols = append(cols,
strings.Join(keys, "\n"),
strings.Join(descs, "\n"),
)
pair := baseStyle.Render(lipgloss.JoinHorizontal(lipgloss.Top, cols...))
// check whether it exceeds the maximum width avail (the width of the
// terminal, subtracting 2 for the borders).
width += lipgloss.Width(pair)
if width > h.width-2 {
break
}
pairs = append(pairs, pair)
}
// https://github.com/charmbracelet/lipgloss/issues/209
if len(pairs) > 1 {
prefix := pairs[:len(pairs)-1]
lastPair := pairs[len(pairs)-1]
prefix = append(prefix, lipgloss.Place(
lipgloss.Width(lastPair), // width
lipgloss.Height(prefix[0]), // height
lipgloss.Left, // x
lipgloss.Top, // y
lastPair, // content
lipgloss.WithWhitespaceBackground(t.Background()),
))
content := baseStyle.Width(h.width).Render(
lipgloss.JoinHorizontal(
lipgloss.Top,
prefix...,
),
)
return content
}
// Join pairs of columns and enclose in a border
content := baseStyle.Width(h.width).Render(
lipgloss.JoinHorizontal(
lipgloss.Top,
pairs...,
),
)
return content
}
func (h *helpCmp) View() string {
t := theme.CurrentTheme()
baseStyle := styles.BaseStyle()
content := h.render()
header := baseStyle.
Bold(true).
Width(lipgloss.Width(content)).
Foreground(t.Primary()).
Render("Keyboard Shortcuts")
return baseStyle.Padding(1).
Border(lipgloss.RoundedBorder()).
BorderForeground(t.TextMuted()).
Width(h.width).
BorderBackground(t.Background()).
Render(
lipgloss.JoinVertical(lipgloss.Center,
header,
baseStyle.Render(strings.Repeat(" ", lipgloss.Width(header))),
content,
),
)
}
type HelpCmp interface {
tea.Model
SetBindings([]key.Binding)
}
func NewHelpCmp() HelpCmp {
return &helpCmp{}
}
|
