wip chat sessions 2

system_prompt_editor.go

@@ -19,7 +19,7 @@ type SystemPromptEditorOptions struct {
 	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 is the character limit; over it, Save is blocked. Zero is none.
 	MaxLength int
 	// Saving shows the caller's save in progress and blocks editing.
 	Saving   bool
@@ -47,6 +47,7 @@ func SystemPromptEditor(c *ui.Context, value *string, opts SystemPromptEditorOpt
 	col := ui.Column(c).Gap(d.Unit() * 2).Disabled(blocked)
 	v := SystemPromptEditorView{Element: col}
 	dirty := *value != opts.Saved
+	over := opts.MaxLength > 0 && utf8.RuneCountInString(*value) > opts.MaxLength
 	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)
@@ -62,24 +63,24 @@ func SystemPromptEditor(c *ui.Context, value *string, opts SystemPromptEditorOpt
 		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)
+			// With MaxLength the TextArea shows "n / max" itself.
+			count := ""
+			if opts.MaxLength == 0 {
+				count = fmt.Sprintf(msg(c, "system_prompt_editor.count"), utf8.RuneCountInString(*value))
 			}
 			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()
+			v.Save = Button(c, msg(c, "system_prompt_editor.save"), ButtonOptions{Loading: opts.Saving, Disabled: opts.Disabled || !dirty || over}).Clicked()
 		})
 	})
 	mods := ui.Ctrl
 	if runtime.GOOS == "darwin" {
 		mods = ui.Cmd
 	}
-	if col.Shortcut(mods, ui.KeyS) && dirty {
+	if col.Shortcut(mods, ui.KeyS) && dirty && !over {
 		v.Save = true
 	}
 	if col.IsDisabled() {