/// <summary>
/// Invoked when application execution is being suspended. Application state is saved
/// without knowing whether the application will be terminated or resumed with the contents
/// of memory still intact.
/// </summary>
/// <param name="sender">The source of the suspend request.</param>
/// <param name="e">Details about the suspend request.</param>
private async void OnSuspending(object sender, SuspendingEventArgs e)
{
SuspendingDeferral deferral = null;
try
{
// Wait for below code to complete
deferral = e.SuspendingOperation.GetDeferral();
// Indicate ui is supended
StorageSettings.IsUISuspended = true;
// Register background tasks if not registered
SyncMailBackgroundTask.Register();
// Unload and disconnect mailboxes
MainPage.Current.UnloadAndDisconnectMailboxes();
// Save state
await SuspensionManager.SaveAsync();
LogFile.Instance.LogInformation("", "", string.Format("Suspended: IsUISuspended - {0}, IsTaskRunning - {1}.", StorageSettings.IsUISuspended, StorageSettings.IsTaskRunning));
}
catch (Exception ex)
{
LogFile.Instance.LogInformation("", "", ex.ToString());
}
finally
{
// Indicate app can be suspended
deferral.Complete();
}
}
/// <summary>
/// Invoked when application execution is being resumed.
/// </summary>
/// <param name="sender">The source of the resume request.</param>
/// <param name="e">Details about the resume request.</param>
private void OnResuming(object sender, object e)
{
try
{
// Indicate ui is not supended
StorageSettings.IsUISuspended = false;
// Unregister background tasks if registered
SyncMailBackgroundTask.Unregister();
// Wait for background task to complete
WaitForBackgroundTaskToComplete();
// If MailHeadersItemsSource
MainPage.Current.BindMailHeader(StorageSettings.AccountSettingsDataDictionary[MainPage.Current.MailboxTreeDataContext.Value.Key.EmailAddress], ((MailboxListViewItem)SuspensionManager.SessionState["MailboxTreeSelectedItem"]).Mailbox, MainPage.Current.QueryText);
LogFile.Instance.LogInformation("", "", string.Format("Resumed: IsUISuspended - {0}, IsTaskRunning - {1}.", StorageSettings.IsUISuspended, StorageSettings.IsTaskRunning));
}
catch (Exception ex)
{
LogFile.Instance.LogInformation("", "", ex.ToString());
}
}
/// <summary>
/// Invoked when the application is launched normally by the end user. Other entry points
/// will be used when the application is launched to open a specific file, to display
/// search results, and so forth.
/// </summary>
/// <param name="args">Details about the launch request and process.</param>
protected async override void OnLaunched(LaunchActivatedEventArgs args)
{
// Indicate ui is not supended
StorageSettings.IsUISuspended = false;
// Unregister background tasks if registered
SyncMailBackgroundTask.Unregister();
// Wait for background task to complete
WaitForBackgroundTaskToComplete();
try
{
EmailToastNotificationContext = (string.IsNullOrEmpty(args.Arguments) ? null : IOUtil.Deserialize <EmailToastNotificationContext>(args.Arguments));
}
catch (Exception ex)
{
LogFile.Instance.LogError("", "", ex.ToString());
}
Frame rootFrame = Window.Current.Content as Frame;
// Do not repeat app initialization when the Window already has content,
// just ensure that the window is active
if (rootFrame == null)
{
// Create a Frame to act as the navigation context and navigate to the first page
rootFrame = new Frame();
SuspensionManager.RegisterFrame(rootFrame, "appFrame");
if (args.PreviousExecutionState == ApplicationExecutionState.Terminated ||
args.PreviousExecutionState == ApplicationExecutionState.ClosedByUser ||
args.PreviousExecutionState == ApplicationExecutionState.NotRunning)
{
try
{
await SuspensionManager.RestoreAsync();
if (StorageSettings.MailHeaderDictionary.AllEmailCount == 0)
{
throw new Exception("Mail header dictionary data missing.");
}
IsSessionStateCorrupted = false;
}
catch
{
IsSessionStateCorrupted = true;
}
}
// Place the frame in the current Window
Window.Current.Content = rootFrame;
}
else
{
try
{
// If toast notification
if (App.EmailToastNotificationContext != null)
{
// Set the selected items
MainPage.Current.SelectedAccount = StorageSettings.AccountSettingsDataDictionary.Single(o => o.Key.Equals(App.EmailToastNotificationContext.EmailAddress, StringComparison.OrdinalIgnoreCase));
MainPage.Current.SelectedMailboxListViewItem = MainPage.Current.MailboxTreeDataContext.Value.Value.Single(o => o.Mailbox.FullName.Equals(App.EmailToastNotificationContext.MailboxFullName));
MainPage.Current.SelectedMailHeader = StorageSettings.MailHeaderDictionary[App.EmailToastNotificationContext.EmailAddress][App.EmailToastNotificationContext.MailboxFullName].Single(o => o.Uid.Equals(App.EmailToastNotificationContext.Uid, StringComparison.OrdinalIgnoreCase));
}
}
catch (Exception ex)
{
LogFile.Instance.LogError("", "", ex.ToString());
}
}
if (rootFrame.Content == null)
{
// When the navigation stack isn't restored navigate to the first page,
// configuring the new page by passing required information as a navigation
// parameter
if (!rootFrame.Navigate(typeof(MainPage), args.Arguments))
{
throw new Exception("Failed to create initial page");
}
}
LogFile.Instance.LogInformation("", "", string.Format("Launched: IsUISuspended - {0}, IsTaskRunning - {1}.", StorageSettings.IsUISuspended, StorageSettings.IsTaskRunning));
// Ensure the current window is active
Window.Current.Activate();
}
