/// <summary>
/// Searches User to enrol by reg number typed in the Search input field
/// </summary>
private void SetActiveUserByRegNo()
{
// Checking to make sure search input field is not empty
if (string.IsNullOrWhiteSpace(TxtSearchUser.Text))
{
MessageBox.Show("Please enter user's Reg. Number in the search field");
}
else
{
// Variable to hold error message if any
string errMsg;
if (EnrollmentOperations.SetActiveUser(TxtSearchUser.Text, out errMsg))
{
// Getting the parent window
_parentWindow = Window.GetWindow(this);
// Change the Windows current page
if (_parentWindow != null)
{
((WindowViewModel)_parentWindow.DataContext).CurrentPage = ApplicationPage.NewEnrollment;
}
}
else
{
MessageBox.Show(errMsg);
}
}
}
/// <summary>
/// Saves Fingerprint template to UsersToEnroll file
/// </summary>
/// <param name="temp">The fingerprint template to save</param>
/// <returns></returns>
private bool SaveFingerprint(byte[] temp)
{
// Getting the finger whose template is to be saved
if (_activeUser?.Fingers?.FirstOrDefault(a => a.Finger.IndexNumber == _activeFinger.Finger.IndexNumber) != null)
{
#region Save template to UsersToEnrol file in program memory
// Variable to hold User currently being enrolled
var user = EnrollmentOperations.GetUsersToEnrol().Users
.FirstOrDefault(x => x.User.Id == _activeUser.User.Id);
// The User's particular finger which is being enrolled
var finger = user?.Fingers.FirstOrDefault(p => p.Finger.IndexNumber == _activeFinger.Finger.IndexNumber);
if (finger != null)
{
// Assign gotten template to User's active finger
finger.Template = temp;
}
#endregion
#region Save template to UsersToEnrol file in a path in User's PC
// Convert UsersToEnrol to JSON string
var jsonString = EnrollmentOperations.GetUsersToEnrol().ConvertToJson();
// The path in user's PC to save UsersToEnrol JSON file
string path = FileInformation.GetLoggedInUserFileDirectory() + @"\UsersToEnrol.json";
string errMsg;
// Saving UsersToEnrol JSON file to the specified path
FileInformation fileInfo = new FileInformation();
if (fileInfo.WriteFile(path, jsonString, out errMsg))
{
MessageBox.Show("Fingerprint template saved succesfully!");
return(true);
}
else
{
MessageBox.Show("Failed to save fingerprint template");
return(false);
}
#endregion
}
return(false);
}
/// <summary>
/// Action performed when Begin enrollment button is clicked
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
public void BeginEnrollment_Clicked(object sender, RoutedEventArgs e)
{
string errMsg;
if (!EnrollmentOperations.SetUsersToEnrol(out errMsg))
{
MessageBox.Show(errMsg);
return;
}
// Instance of the Application window
_parentWindow = GetWindow("AppWindow");
if (_parentWindow == null)
{
return;
}
// Instance of the window hosting this page
var activeWindow = Window.GetWindow(this);
if (activeWindow == null)
{
return;
}
// close active page
activeWindow.Close();
// Application window view model
var viewModel = (WindowViewModel)_parentWindow.DataContext;
// Instantiating the window properties
viewModel.CurrentPage = ApplicationPage.NewEnrollmentOverlay;
viewModel.PageTitle = "New Enrollment Page - Tonorp Attendance";
_parentWindow.Height = 660;
_parentWindow.Width = 1220;
viewModel.IsRestoreButtonVisible = true;
viewModel.IsNewEnrollmentButtonVisible = true;
viewModel.IsLogoutButtonVisible = true;
viewModel.IsInfoButtonVisible = true;
viewModel.IsWindowOverlayVisible = false;
}
/// <summary>
/// Default Constructor
/// </summary>
public NewEnrollment()
{
InitializeComponent();
// Setting the User whoes enrollment is currently active
_activeUser = EnrollmentOperations.GetActiveUser();
// Sets the list of finger thumbnails for the user
// currently being enrolled
SetActiveThumbnails();
// Sets the Itemsourse of Finger thumbnail ItemControl
FingerThumbnail.ItemsSource = _activeThumnails;
// Triggers click event of BtnShowTemplate which in turn Sets template image for
// User's finger which already has template due to previous enrollment
ButtonAutomationPeer peer = new ButtonAutomationPeer(BtnShowTemplate);
IInvokeProvider invokeProv = peer.GetPattern(PatternInterface.Invoke) as IInvokeProvider;
invokeProv?.Invoke();
DataContext = this;
}
