/// <summary>
/// Activates ContactPickerPage.
/// </summary>
/// <param name="args">ContactPicker activated args</param>
public void Activate(ContactPickerActivatedEventArgs args)
{
this.contactPickerUI = args.ContactPickerUI;
Window.Current.Content = this;
this.OnNavigatedTo(null);
Window.Current.Activate();
}
/// <summary>
/// Invoked when user removes one of the items from the Picker basket
/// </summary>
/// <param name="sender">The FileOpenPickerUI instance used to contain the available files.</param>
/// <param name="e">Event data that describes the file removed.</param>
private async void HandleContactPickerUIContactRemoved(ContactPickerUI sender, ContactRemovedEventArgs e)
{
await Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
// Synchronize the select items in the UI lists to remove hte item that was removed from the picker's 'basket'
var removedSelectedGridItem = ContactGridView.SelectedItems.Cast <Contact>().FirstOrDefault(x => x.Id == e.Id);
if (removedSelectedGridItem != null)
{
ContactGridView.SelectedItems.Remove(removedSelectedGridItem);
}
});
}
async void contactPickerUI_ContactRemoved(ContactPickerUI sender, ContactRemovedEventArgs args)
{
// The event handler may be invoked on a background thread, so use the Dispatcher to run the UI-related code on the UI thread.
string removedId = args.Id;
await dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
foreach (SampleContact contact in ContactList.SelectedItems)
{
if (contact.Id == removedId)
{
ContactList.SelectedItems.Remove(contact);
OutputText.Text += "\n" + contact.Name + " was removed from the basket";
break;
}
}
});
}
/// <summary>
/// Invoked when another application wants to open files from this application.
/// </summary>
/// <param name="contactPickerUI">The contact picker user interface element.</param>
public void Initialize(ContactPickerUI contactPickerUI)
{
if (contactPickerUI == null)
{
throw new ArgumentNullException("contactPickerUI");
}
// Tie into the containing File Picker object
_contactPickerUI = contactPickerUI;
_contactPickerUI.ContactRemoved += HandleContactPickerUIContactRemoved;
// Initialize the ViewModel
DefaultViewModel["CanGoUp"] = false;
DefaultViewModel["ContactGroups"] = null;
DefaultViewModel["SelectedContact"] = null;
// Fetch the data and set it to the View Model
var sampleDataGroups = AppSampleData.Current.SampleData.Groups
.OrderBy(x => x.Key)
.ToList();
DefaultViewModel["ContactGroups"] = sampleDataGroups;
}
