New Freqman edit UI (#1272)

* WIP new edit UI

* Fix textfield highlight

* WIP new edit

* Wrap up first pass of freqman edit

* Fix indexing of options

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Co-authored-by: kallanreed <kallanreed@noreply.github.com>

firmware/application/field_binder.hpp

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2023 Kyle Reed
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __FIELD_BINDER_H__
+#define __FIELD_BINDER_H__
+
+/* There's a common pattern that appears in applications that use
+ * field widgets. The field value is set, on_change and on_select
+ * handlers are registered. on_select will read the value and
+ * set the new value once changed. on_change will be called which
+ * will write the new value to the backing variable. */
+
+struct binding_traits {
+};
+
+template <typename T>
+constexpr auto get_traits() {
+    return {};
+}
+
+template <typename TField, typename TTraits = get_traits<TField>()>
+class FieldBinding {
+};
+
+#endif /*__FIELD_BINDER_H__*/