Method UpdatePrefs

src/toolbars/DeviceToolBar.cpp:248–344

}

void DeviceToolBar::UpdatePrefs()
{
   wxString desc;
   const std::vector<DeviceSourceMap> &inMaps  = DeviceManager::Instance()->GetInputDeviceMaps();
   const std::vector<DeviceSourceMap> &outMaps = DeviceManager::Instance()->GetOutputDeviceMaps();


   int hostSelectionIndex = mHost->GetSelection();
   wxString oldHost = hostSelectionIndex >= 0 ? mHost->GetString(hostSelectionIndex) :
                                                wxString{};
   auto hostName = AudioIOHost.Read();

   // if the prefs host name doesn't match the one displayed, it changed
   // in another project's DeviceToolBar, so we need to repopulate everything.
   if (oldHost != hostName)
      FillHostDevices();

   auto devName = AudioIORecordingDevice.Read();
   auto sourceName = AudioIORecordingSource.Read();
   if (sourceName.empty())
      desc = devName;
   else
      desc = devName + wxT(": ") + sourceName;

   if (mInput->GetStringSelection() != desc &&
       mInput->FindString(desc) != wxNOT_FOUND) {
      mInput->SetStringSelection(desc);
      FillInputChannels();
   } else if (mInput->GetStringSelection() != desc && mInput->GetCount()) {
      for (size_t i = 0; i < inMaps.size(); i++) {
         if (inMaps[i].hostString == hostName &&
             MakeDeviceSourceString(&inMaps[i]) == mInput->GetString(0)) {
            // use the default.  It should exist but check just in case, falling back on the 0 index.
            DeviceSourceMap *defaultMap = DeviceManager::Instance()->GetDefaultInputDevice(inMaps[i].hostIndex);
            if (defaultMap) {
               mInput->SetStringSelection(MakeDeviceSourceString(defaultMap));
               SetDevices(defaultMap, NULL);
            } else {
               //use the first item (0th index) if we have no familiar devices
               mInput->SetSelection(0);
               SetDevices(&inMaps[i], NULL);
            }
            break;
         }
      }
   }

   devName = AudioIOPlaybackDevice.Read();
   sourceName = AudioIOPlaybackSource.Read();
   if (sourceName.empty())
      desc = devName;
   else
      desc = devName + wxT(": ") + sourceName;

   if (mOutput->GetStringSelection() != desc &&
       mOutput->FindString(desc) != wxNOT_FOUND) {
      mOutput->SetStringSelection(desc);
   } else if (mOutput->GetStringSelection() != desc &&