better disconnected device handling

midi/midi.go

@@ -148,7 +148,7 @@ func (m *midi) NewDevice(device, fallback string) Device {
 		}
 	}
 	return Device{
-		Name:     m.Devices()[defaultDevice].String(),
+		Name:     device,
 		ID:       defaultDevice,
 		Fallback: true,
 	}

ui/param/default_device.go

@@ -1,6 +1,7 @@
 package param
 
 import (
+	"fmt"
 	"signls/core/field"
 )
 
@@ -13,12 +14,19 @@ func (d DefaultDevice) Name() string {
 }
 
 func (d DefaultDevice) Help() string {
-	return ""
+	if !d.grid.MidiDevice().Enabled() {
+		return ""
+	} else if d.grid.MidiDevice().Fallback {
+		return fmt.Sprintf("disconnected: %s", d.grid.MidiDevice().Name)
+	}
+	return d.grid.MidiDevice().Name
 }
 
 func (d DefaultDevice) Display() string {
-	// TODO: handle disconnected as well
-	return d.grid.MidiDevice().Name
+	if d.grid.MidiDevice().Fallback {
+		return "??"
+	}
+	return fmt.Sprintf("%d", d.grid.MidiDevice().ID)
 }
 
 func (d DefaultDevice) Value() int {

ui/ui.go

@@ -363,7 +363,7 @@ func (m mainModel) View() string {
 		Render(m.help.View(m.keymap))
 
 	paramHelp := ""
-	if m.mode == EDIT {
+	if m.mode == EDIT || m.mode == CONFIG {
 		paramHelp = m.help.Styles.ShortDesc.
 			MarginLeft(16).
 			Render(m.activeParam().Help())