wip chat sessions

system_prompt_editor.go

@@ -0,0 +1,95 @@
+package mujica
+
+import (
+	"fmt"
+	"log/slog"
+	"runtime"
+	"unicode/utf8"
+
+	"github.com/egoist/mygo/ui"
+
+	"mujicaui/icons"
+	"mujicaui/internal"
+	"mujicaui/theme"
+)
+
+// SystemPromptEditorOptions configure a SystemPromptEditor.
+type SystemPromptEditorOptions struct {
+	// Default is what Restore default puts back.
+	Default string
+	// Saved is the text last saved; a different value shows as unsaved.
+	Saved string
+	// MaxLength caps the characters; zero is no cap.
+	MaxLength int
+	// Saving shows the caller's save in progress and blocks editing.
+	Saving   bool
+	Disabled bool
+}
+
+// SystemPromptEditorView is a built editor and what the user asked for.
+type SystemPromptEditorView struct {
+	Element *ui.Element
+	// Save asks the caller to save *value; Restored reports the default was put back.
+	Save, Restored bool
+}
+
+// SystemPromptEditor edits a system prompt with a character count, restore default, an unsaved mark and Mod+S to save.
+func SystemPromptEditor(c *ui.Context, value *string, opts SystemPromptEditorOptions) SystemPromptEditorView {
+	if value == nil {
+		panic("mujica: SystemPromptEditor needs a value")
+	}
+	if opts.MaxLength < 0 {
+		panic("mujica: SystemPromptEditor MaxLength is negative")
+	}
+	k := Tokens(c)
+	d := Density(c)
+	blocked := opts.Disabled || opts.Saving
+	col := ui.Column(c).Gap(d.Unit() * 2).Disabled(blocked)
+	v := SystemPromptEditorView{Element: col}
+	dirty := *value != opts.Saved
+	col.Children(func() {
+		ui.Row(c).Gap(d.Unit() * 2).AlignItems(ui.Center).Children(func() {
+			ui.Text(c, msg(c, "system_prompt_editor.title")).Font(theme.SerifFont).FontSize(FontSize(c, theme.H3Size)).TextColor(k.Text).Grow(1)
+			if dirty {
+				ui.Row(c).Gap(d.Unit()).AlignItems(ui.Center).Role(ui.RoleStatus).Children(func() {
+					ui.Box(c).Size(8, 8).Draw(func(p *ui.Painter, r ui.Rect) {
+						p.FillPath(internal.Diamond(r.X+4, r.Y+4, 8), k.Warning)
+					})
+					ui.Text(c, msg(c, "system_prompt_editor.unsaved")).FontSize(FontSize(c, theme.CaptionSize)).TextColor(k.Warning)
+				})
+			}
+		})
+		TextArea(c, value, TextAreaOptions{Label: msg(c, "system_prompt_editor.title"), MinHeight: 120, MaxHeight: 320,
+			MaxLength: opts.MaxLength, Disabled: blocked})
+		ui.Row(c).Gap(d.Unit() * 2).AlignItems(ui.Center).Children(func() {
+			n := utf8.RuneCountInString(*value)
+			count := fmt.Sprintf(msg(c, "system_prompt_editor.count"), n)
+			if opts.MaxLength > 0 {
+				count = fmt.Sprintf(msg(c, "system_prompt_editor.count_of"), n, opts.MaxLength)
+			}
+			ui.Text(c, count).FontSize(FontSize(c, theme.CaptionSize)).TextColor(k.TextMuted).Grow(1)
+			if Button(c, msg(c, "system_prompt_editor.restore"), ButtonOptions{Variant: Ghost, Icon: icons.Must("refresh-cw"),
+				Disabled: blocked || *value == opts.Default}).Clicked() && !col.IsDisabled() {
+				*value, v.Restored = opts.Default, true
+			}
+			v.Save = Button(c, msg(c, "system_prompt_editor.save"), ButtonOptions{Loading: opts.Saving, Disabled: opts.Disabled || !dirty}).Clicked()
+		})
+	})
+	mods := ui.Ctrl
+	if runtime.GOOS == "darwin" {
+		mods = ui.Cmd
+	}
+	if col.Shortcut(mods, ui.KeyS) && dirty {
+		v.Save = true
+	}
+	if col.IsDisabled() {
+		v.Save = false
+	}
+	switch {
+	case v.Save:
+		slog.Debug("mujica: system_prompt_editor save", "len", len(*value))
+	case v.Restored:
+		slog.Debug("mujica: system_prompt_editor restore")
+	}
+	return v
+}