private void OnLoaded(object sender, RoutedEventArgs e)
{
if (selectedContact == null && Contacts.Count > 0)
{
selectedContact = Contacts[0];
MasterListView.SelectedIndex = 0;
}
// If the app starts in narrow mode - showing only the Master listView -
// it is necessary to set the commands and the selection mode.
if (PageSizeStatesGroup.CurrentState == NarrowState)
{
VisualStateManager.GoToState(this, MasterState.Name, true);
}
else if (PageSizeStatesGroup.CurrentState == WideState)
{
// In this case, the app starts is wide mode, Master/Details view,
// so it is necessary to set the commands and the selection mode.
VisualStateManager.GoToState(this, MasterDetailsState.Name, true);
MasterListView.SelectionMode = ListViewSelectionMode.Extended;
MasterListView.SelectedItem = selectedContact;
}
else
{
new InvalidOperationException();
}
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
SelectedContact = e.Parameter as Contact;
// Register for hardware and software back request from the system
SystemNavigationManager.GetForCurrentView().BackRequested += OnHardwareBackRequested;
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
SelectedContact = e.Parameter as Contact;
// Register for hardware and software back request from the system
SystemNavigationManager systemNavigationManager = SystemNavigationManager.GetForCurrentView();
systemNavigationManager.BackRequested += OnBackRequested;
systemNavigationManager.AppViewBackButtonVisibility = AppViewBackButtonVisibility.Visible;
}
private void AddItem(object sender, RoutedEventArgs e)
{
Contact c = Contact.GetNewContact();
Contacts.Add(c);
// Select this item in case that the list is empty
if (MasterListView.SelectedIndex == -1)
{
MasterListView.SelectedIndex = 0;
selectedContact = MasterListView.SelectedItem as Contact;
// Details view is collapsed, in case there is not items.
// You should show it just in case.
DetailContentPresenter.Visibility = Visibility.Visible;
}
}
private void DeleteItem(object sender, RoutedEventArgs e)
{
if (selectedContact != null)
{
Contacts.Remove(selectedContact);
if (MasterListView.Items.Count > 0)
{
MasterListView.SelectedIndex = 0;
selectedContact = MasterListView.SelectedItem as Contact;
}
else
{
// Details view is collapsed, in case there is not items.
DetailContentPresenter.Visibility = Visibility.Collapsed;
}
}
}
private void OnSelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (PageSizeStatesGroup.CurrentState == WideState)
{
if (MasterListView.SelectedItems.Count == 1)
{
selectedContact = MasterListView.SelectedItem as Contact;
EnableContentTransitions();
}
// Entering in Extended selection
else if (MasterListView.SelectedItems.Count > 1
&& MasterDetailsStatesGroup.CurrentState == MasterDetailsState)
{
VisualStateManager.GoToState(this, ExtendedSelectionState.Name, true);
}
}
// Exiting Extended selection
if (MasterDetailsStatesGroup.CurrentState == ExtendedSelectionState &&
MasterListView.SelectedItems.Count == 1)
{
VisualStateManager.GoToState(this, MasterDetailsState.Name, true);
}
}
// ItemClick event only happens when user is a Master state. In this state,
// selection mode is none and click event navigates to the details view.
private void OnItemClick(object sender, ItemClickEventArgs e)
{
// The clicked item it is the new selected contact
selectedContact = e.ClickedItem as Contact;
if (PageSizeStatesGroup.CurrentState == NarrowState)
{
// Go to the details page and display the item
Frame.Navigate(typeof(DetailsPage), selectedContact, new DrillInNavigationTransitionInfo());
}
//else
{
// Play a refresh animation when the user switches detail items.
//EnableContentTransitions();
}
}
private void DeleteItems(object sender, RoutedEventArgs e)
{
if (MasterListView.SelectedIndex != -1)
{
List<Contact> selectedItems = new List<Contact>();
foreach (Contact contact in MasterListView.SelectedItems)
{
selectedItems.Add(contact);
}
foreach (Contact contact in selectedItems)
{
Contacts.Remove(contact);
}
if (MasterListView.Items.Count > 0)
{
MasterListView.SelectedIndex = 0;
selectedContact = MasterListView.SelectedItem as Contact;
}
else
{
DetailContentPresenter.Visibility = Visibility.Collapsed;
}
}
}
