Add unix support for removeMenuItem

Signed-off-by: Brian Dwyer <[email protected]>

systray_menu_unix.go

@@ -253,6 +253,42 @@ func findSubLayout(id int32, vals []dbus.Variant) (*menuLayout, bool) {
 	return nil, false
 }
 
+func removeSubLayout(id int32, vals []dbus.Variant) ([]dbus.Variant, bool) {
+	for idx, i := range vals {
+		item := i.Value().(*menuLayout)
+		if item.V0 == id {
+			return append(vals[:idx], vals[idx+1:]...), true
+		}
+
+		if len(item.V2) > 0 {
+			if child, removed := removeSubLayout(id, item.V2); removed {
+				return child, true
+			}
+		}
+	}
+
+	return vals, false
+}
+
+func removeMenuItem(item *MenuItem) {
+	instance.menuLock.Lock()
+	defer instance.menuLock.Unlock()
+
+	parent := instance.menu
+	if item.parent != nil {
+		m, ok := findLayout(int32(item.parent.id))
+		if !ok {
+			return
+		}
+		parent = m
+	}
+
+	if items, removed := removeSubLayout(int32(item.id), parent.V2); removed {
+		parent.V2 = items
+		refresh()
+	}
+}
+
 func hideMenuItem(item *MenuItem) {
 	instance.menuLock.Lock()
 	defer instance.menuLock.Unlock()