void OnUserActivityRequested(UserActivityRequestManager sender, UserActivityRequestedEventArgs e)
{
using (e.GetDeferral())
{
// Generate a user activity that remembers the scroll position.
var scrollViewer = FindScrollViewer(ReaderElement);
var scrollProgress = scrollViewer.ScrollableHeight > 0 ? scrollViewer.ContentVerticalOffset / scrollViewer.ScrollableHeight : 0.0;
// Create user activity session for this window.
var activityId = FormattableString.Invariant($"book?id={BookId}&pos={scrollProgress}");
var activity = new UserActivity(activityId);
activity.ActivationUri = new Uri($"{App.ProtocolScheme}:{activityId}");
activity.VisualElements.DisplayText = Book.Title;
activity.VisualElements.Description = $"{(int)(scrollProgress * 100)}% complete";
var card = new AdaptiveCard();
card.BackgroundImage = Book.ImageUri;
card.Body.Add(new AdaptiveTextBlock(Book.Title)
{
Size = AdaptiveTextSize.Large, Weight = AdaptiveTextWeight.Bolder
});
activity.VisualElements.Content = AdaptiveCardBuilder.CreateAdaptiveCardFromJson(card.ToJson());
e.Request.SetUserActivity(activity);
}
}
void OnUserActivityRequested(UserActivityRequestManager sender, UserActivityRequestedEventArgs e)
{
// The system raises the UserActivityRequested event to request that the
// app generate an activity that describes what the user is doing right now.
// This activity is used to restore the app as part of a Set.
using (e.GetDeferral())
{
// Determine which trip and to-do item the user is currently working on.
var description = Trip.Description;
var index = ToDoListView.SelectedIndex;
if (index >= 0)
{
description = ToDoListView.SelectedItem.ToString();
}
// Generate a UserActivity that says that the user is looking at
// a particular to-do item on this trip.
string activityId = $"trip?id={Trip.Id}&todo={index}";
var activity = new UserActivity(activityId);
// The system uses this URI to resume the activity.
activity.ActivationUri = new Uri($"{App.ProtocolScheme}:{activityId}");
// Describe the activity.
activity.VisualElements.DisplayText = Trip.Title;
activity.VisualElements.Description = description;
// Build the adaptive card JSON with the helper classes in the NuGet package.
// You are welcome to generate your JSON using any library you like.
var card = new AdaptiveCard();
card.BackgroundImage = Trip.ImageSourceUri;
card.Body.Add(new AdaptiveTextBlock(Trip.Title)
{
Size = AdaptiveTextSize.Large, Weight = AdaptiveTextWeight.Bolder
});
card.Body.Add(new AdaptiveTextBlock(description));
var adaptiveCardJson = card.ToJson();
// Turn the JSON into an adaptive card and set it on the activity.
activity.VisualElements.Content = AdaptiveCardBuilder.CreateAdaptiveCardFromJson(adaptiveCardJson);
// Respond to the request.
e.Request.SetUserActivity(activity);
}
}
protected override async void OnNavigatedTo(NavigationEventArgs e)
{
// Handle the events from the Back button, but do not show it.
systemNavigationManager = SystemNavigationManager.GetForCurrentView();
systemNavigationManager.BackRequested += OnBackRequested;
// Parse the URI query parameters. They tell us what to load.
var decoder = new WwwFormUrlDecoder((string)e.Parameter);
Trip = TripData.FromId(GetDecoderField(decoder, "id"));
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("Trip"));
if (Trip == null)
{
// Invalid trip.
return;
}
if (!int.TryParse(GetDecoderField(decoder, "todo"), out previousSelectedIndex))
{
previousSelectedIndex = -1;
}
// If applicable, perform a connected animation to make the page transition smoother.
var animationService = ConnectedAnimationService.GetForCurrentView();
var animation = animationService.GetAnimation("drillin");
if (animation != null)
{
animation.TryStart(HeroGrid);
}
// Update the title of the view to match the trip the user is looking at.
ApplicationView.GetForCurrentView().Title = Trip.Title;
// Generate a UserActivity that says that the user is looking at this trip.
var channel = UserActivityChannel.GetDefault();
string activityId = $"trip?id={Trip.Id}";
var activity = await channel.GetOrCreateUserActivityAsync(activityId);
// The system uses this URI to resume the activity.
activity.ActivationUri = new Uri($"{App.ProtocolScheme}:{activityId}");
// Describe the activity.
activity.VisualElements.DisplayText = Trip.Title;
activity.VisualElements.Description = Trip.Description;
// Build the adaptive card JSON with the helper classes in the NuGet package.
// You are welcome to generate your JSON using any library you like.
var card = new AdaptiveCard();
card.BackgroundImage = Trip.ImageSourceUri;
card.Body.Add(new AdaptiveTextBlock(Trip.Title)
{
Size = AdaptiveTextSize.Large, Weight = AdaptiveTextWeight.Bolder
});
card.Body.Add(new AdaptiveTextBlock(Trip.Description));
var adaptiveCardJson = card.ToJson();
// Turn the JSON into an adaptive card and set it on the activity.
activity.VisualElements.Content = AdaptiveCardBuilder.CreateAdaptiveCardFromJson(adaptiveCardJson);
// Save it to the activity feed.
await activity.SaveAsync();
// Start a session. This tels the system know that the user is engaged in the activity right now.
this.activitySession = activity.CreateSession();
// Subscribe to the UserActivityRequested event if the system supports it.
if (ApiInformation.IsEventPresent(typeof(UserActivityRequestManager).FullName, "UserActivityRequested"))
{
activityRequestManager = UserActivityRequestManager.GetForCurrentView();
activityRequestManager.UserActivityRequested += OnUserActivityRequested;
}
}
private async void Window_SourceInitialized(object sender, EventArgs e)
{
Title = Book.Title;
var scrollViewer = FindScrollViewer(ReaderElement);
scrollViewer.ScrollToVerticalOffset(PreviousScrollProgress * scrollViewer.ScrollableHeight);
var windowHandle = (new System.Windows.Interop.WindowInteropHelper(this)).Handle;
// Set custom tab colors.
ApplicationViewTitleBar titleBar = ComInterop.GetTitleBarForWindow(windowHandle);
if (titleBar != null)
{
titleBar.BackgroundColor = Color.FromArgb(255, 54, 60, 116);
titleBar.ForegroundColor = Color.FromArgb(255, 232, 211, 162);
}
// Apply grouping behavior.
if (!WantsCustomGroupingBehavior)
{
// Allow caller-specified default grouping to happen.
}
else if (AssociatedWindow == IntPtr.Zero)
{
// Open in new group.
int preference = DWMTGP_NEW_TAB_GROUP;
DwmSetWindowAttribute(windowHandle, DWMWA_TAB_GROUPING_PREFERENCE, ref preference, Marshal.SizeOf <int>());
}
else
{
// Join an existing group.
int preference = DWMTGP_TAB_WITH_ASSOCIATED_WINDOW;
DwmSetWindowAttribute(windowHandle, DWMWA_TAB_GROUPING_PREFERENCE, ref preference, Marshal.SizeOf <int>());
DwmSetWindowAttribute(windowHandle, DWMWA_ASSOCIATED_WINDOW, ref AssociatedWindow, IntPtr.Size);
}
// Generate a UserActivity that says that
// the user is reading this book.
var channel = UserActivityChannel.GetDefault();
var activity = await channel.GetOrCreateUserActivityAsync(BookId);
activity.ActivationUri = new Uri($"{App.ProtocolScheme}:{BookId}");
activity.VisualElements.DisplayText = Book.Title;
var card = new AdaptiveCard();
card.BackgroundImage = Book.ImageUri;
card.Body.Add(new AdaptiveTextBlock(Book.Title)
{
Size = AdaptiveTextSize.Large, Weight = AdaptiveTextWeight.Bolder
});
activity.VisualElements.Content = AdaptiveCardBuilder.CreateAdaptiveCardFromJson(card.ToJson());
await activity.SaveAsync();
Session = activity.CreateSessionForWindow(windowHandle);
// Listen for user activity requests.
userActivityRequestManager = ComInterop.GetUserActivityRequestManagerForWindow(windowHandle);
if (userActivityRequestManager != null)
{
userActivityRequestManager.UserActivityRequested += OnUserActivityRequested;
}
}
