Moved all the bobbycar gui code into this library

src/changevaluedisplay_sntp_sync_mode_t.cpp

@@ -0,0 +1,40 @@
+#include "changevaluedisplay_sntp_sync_mode_t.h"
+
+// esp-idf includes
+#include <esp_log.h>
+
+// local includes
+#include "actions/setvalueaction.h"
+#include "actions/backproxyaction.h"
+#include "icons/back.h"
+
+namespace espgui {
+namespace {
+constexpr const char * const TAG = "ESPGUI";
+
+constexpr char TEXT_IMMED[] = "IMMED";
+constexpr char TEXT_SMOOTH[] = "SMOOTH";
+constexpr char TEXT_BACK[] = "Back";
+} // namespace
+
+ChangeValueDisplay<sntp_sync_mode_t>::ChangeValueDisplay()
+{
+    constructMenuItem<makeComponentArgs<MenuItem, SetValueAction<sntp_sync_mode_t>, StaticText<TEXT_IMMED>>>(SNTP_SYNC_MODE_IMMED, *this, *this);
+    constructMenuItem<makeComponentArgs<MenuItem, SetValueAction<sntp_sync_mode_t>, StaticText<TEXT_SMOOTH>>>(SNTP_SYNC_MODE_SMOOTH, *this, *this);
+    constructMenuItem<makeComponentArgs<MenuItem, BackProxyAction, StaticText<TEXT_BACK>, StaticMenuItemIcon<&icons::back>>>(*this);
+}
+
+void ChangeValueDisplay<sntp_sync_mode_t>::start()
+{
+    Base::start();
+
+    switch (const auto value = getValue())
+    {
+    case SNTP_SYNC_MODE_IMMED:  setSelectedIndex(0); break;
+    case SNTP_SYNC_MODE_SMOOTH: setSelectedIndex(1); break;
+    default:
+        ESP_LOGW("BOBBY", "Unknown sntp_sync_mode_t: %i", int(value));
+        setSelectedIndex(2);
+    }
+}
+}