openapi

1 files changed, 200 insertions, 0 deletions

diff --git a/pkg/tui/components/dialog/help.go b/pkg/tui/components/dialog/help.go
new file mode 100644
index 000000000..1f7f53e11
--- /dev/null
+++ b/pkg/tui/components/dialog/help.go
@@ -0,0 +1,200 @@
+package dialog
+
+import (
+	"strings"
+
+	"github.com/charmbracelet/bubbles/key"
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/lipgloss"
+	"github.com/sst/opencode/internal/tui/styles"
+	"github.com/sst/opencode/internal/tui/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{}
+}