/// <summary>
/// Triggered every time the page is navigated to.
/// </summary>
protected override void OnNavigatedTo(NavigationEventArgs e)
{
try
{
// Catches the passed UserProfilePage parameters
UserProfileObject userProfileParameters = e.Parameter as UserProfileObject;
// Sets current user as the passed through Visitor object
currentUser = userProfileParameters.Visitor;
// Sets the VisitorNameBlock as the current user's name
VisitorNameBlock.Text = currentUser.Name;
// Sets the local WebcamHelper as the passed through intialized one
webcam = userProfileParameters.WebcamHelper;
}
catch
{
// Something went wrong... It's likely the page was navigated to without a Visitor parameter. Navigate back to MainPage
Frame.Navigate(typeof(MainPage));
}
}
/// <summary>
/// Updates the list of Visitor objects with all whitelisted visitors stored on disk
/// </summary>
private async Task UpdateWhitelistedVisitorsList()
{
// Clears whitelist
whitelistedVisitors.Clear();
// If the whitelistFolder has not been opened, open it
if (whitelistFolder == null)
{
whitelistFolder = await KnownFolders.PicturesLibrary.CreateFolderAsync(GeneralConstants.WhiteListFolderName, CreationCollisionOption.OpenIfExists);
}
// Populates subFolders list with all sub folders within the whitelist folders.
// Each of these sub folders represents the Id photos for a single visitor.
var subFolders = await whitelistFolder.GetFoldersAsync();
// Iterate all subfolders in whitelist
foreach (StorageFolder folder in subFolders)
{
string visitorName = folder.Name;
var filesInFolder = await folder.GetFilesAsync();
var photoStream = await filesInFolder[0].OpenAsync(FileAccessMode.Read);
BitmapImage visitorImage = new BitmapImage();
await visitorImage.SetSourceAsync(photoStream);
Visitor whitelistedVisitor = new Visitor(visitorName, folder, visitorImage, visitorIDPhotoGridMaxWidth);
whitelistedVisitors.Add(whitelistedVisitor);
}
}
/// <summary>
/// Initializes a new UserProfileObject with relevant information
/// </summary>
public UserProfileObject(Visitor visitor, WebcamHelper webcamHelper)
{
Visitor = visitor;
WebcamHelper = webcamHelper;
}