private async void DevWatcher_DeviceAdded(object sender, NurDeviceWatcherInfo e)
{
// Create new api instance for known device
NurApi api = new NurApi();
api.UserData = e;
e.Tag = api;
AttachNurApiEvents(api);
// We must update the collection on the UI thread because the collection is databound to a UI element.
await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
// Attempt to find known device with same address
// This might be true, if known device is added manually
NurDeviceWatcherInfo devToDelete = null;
foreach (var dev in KnownDevices)
{
if (dev.Address == e.Address)
{
devToDelete = dev;
break;
}
}
if (devToDelete != null)
{
DevWatcher_DeviceRemoved(sender, devToDelete);
}
KnownDevices.Add(e);
});
}
private async void DevWatcher_DeviceAddedAsync(object sender, NurDeviceWatcherInfo e)
{
// We must update the collection on the UI thread because the collection is databound to a UI element.
await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
KnownDevices.Add(e);
});
}
private async void DevWatcher_DeviceUpdatedAsync(object sender, NurDeviceWatcherInfo e)
{
// We must update the item on the UI thread because the item is databound to a UI element.
await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
// Update listview item
e.UpdateInfo();
});
}
private async void ConnButton_Click(object sender, RoutedEventArgs e)
{
// Disable buttons while (dis)connecting
ConnButton.IsEnabled = false;
InventoryButton.IsEnabled = false;
try
{
if (mApi.IsConnected())
{
// Disconnect
ConnButton.Content = "Disconneting..";
await mApi.DisconnectAsync();
}
else
{
// Connect
NurDeviceWatcherInfo dev = null;
try
{
dev = KnownDevices[ConnList.SelectedIndex];
}
catch { }
if (dev == null)
{
var dialog = new MessageDialog("Please select device to connect");
await dialog.ShowAsync();
return;
}
// Connect with device connection spec
ConnButton.Content = "Conneting..";
mConnectedDev = dev;
await mApi.ConnectAsync(dev.Spec);
}
}
catch (Exception ex)
{
// Update UI
MApi_DisconnectedEvent(mApi, new NurApi.NurEventArgs(0));
var dialog = new MessageDialog(ex.Message, "Connection Error");
await dialog.ShowAsync();
}
ConnButton.IsEnabled = true;
}
// This is called when NurApi is fully connected to device and ready to communicate
private async void Api_ConnectedEvent(object sender, NurApi.NurEventArgs e)
{
System.Diagnostics.Debug.WriteLine("Api_ConnectedEvent");
NurApi connApi = sender as NurApi;
App.NurApi = connApi;
await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
NurDeviceWatcherInfo knownDev = connApi.UserData as NurDeviceWatcherInfo;
// Save connect spec to settings
//mLocalSettings.Values["devicespec"] = DeviceSpecStr;
mLocalSettings.Values["devicespec"] = knownDev.SpecStr;
// Update listview entry
knownDev.ConnState = NurApiTransport.State.Connected;
knownDev.UpdateInfo();
if (knownDev == SelectedDev)
{
ConnButtonText = "Disconnect";
}
});
// Update reader info
await Task.Run(async() =>
{
try
{
NurApi.ReaderInfo rdrInfo = App.NurApi.GetReaderInfo();
await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
ConnInfo = string.Format("Connected {0} | Serial {1} | FW {2}", rdrInfo.name, rdrInfo.serial, rdrInfo.GetVersionString());
});
}
catch (Exception ex)
{
await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, async() =>
{
ConnInfo = "Error";
await App.ShowException(ex);
});
}
});
}
private async void DevWatcher_DeviceRemoved(object sender, NurDeviceWatcherInfo e)
{
// Free api instance
NurApi api = e.Tag as NurApi;
if (api != null)
{
api.Dispose();
api = null;
}
// We must update the collection on the UI thread because the collection is databound to a UI element.
await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
KnownDevices.Remove(e);
});
}
// This is called when NurApi is fully disconnect (and released resources)
private async void MApi_DisconnectedEvent(object sender, NurApi.NurEventArgs e)
{
// Update UI in UI thread
await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
// Update listview item
if (mConnectedDev != null)
{
mConnectedDev.ConnState = NurApiTransport.State.Disconnected;
mConnectedDev.UpdateInfo();
mConnectedDev = null;
}
// Update UI
InventoryButton.IsEnabled = false;
ConnInfo.Text = "Disconnected";
ConnButton.Content = "Connect";
});
}
// This event gets called by NurApiTransport on connection state change.
// NOTE: Transport level connection states are not same as NurApi Connected/Disconnected event states.
private void Api_TransportConnStateChanged(object sender, EventArgs e)
{
NurApi api = sender as NurApi;
System.Diagnostics.Debug.WriteLine("Api_TransportConnStateChanged " + api.Transport.ConnState);
NurDeviceWatcherInfo info = api.UserData as NurDeviceWatcherInfo;
// We're only interested about Connecting state
if (api.Transport.ConnState == NurApiTransport.State.Connecting && info != null)
{
// Not awaited in purpose
CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
// Update listview entry
info.ConnState = api.Transport.ConnState;
info.UpdateInfo();
});
}
}
// This is called when NurApi is fully disconnect (and released resources)
private async void Api_DisconnectedEvent(object sender, NurApi.NurEventArgs e)
{
NurApi connApi = sender as NurApi;
System.Diagnostics.Debug.WriteLine("Api_DisconnectedEvent " + sender);
await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
NurDeviceWatcherInfo knownDev = connApi.UserData as NurDeviceWatcherInfo;
// Update listview entry
knownDev.ConnState = NurApiTransport.State.Disconnected;
knownDev.UpdateInfo();
if (knownDev == SelectedDev)
{
// Set UI text's
ConnButtonText = "Connect";
ConnInfo = "Disconnected";
}
});
}
