private async void defaultViewModel_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
{
if (e.PropertyName == "UseBackgroundTasks" && defaultViewModel.UseBackgroundTasks)
{
await BackgroundTaskRegistrar.RegisterBackgroundTask(resourceLoader.GetString("Dialog_BackgroundTasksDisabled"));
}
}
/// <summary>
/// Attempts to register a background task.
/// </summary>
private async Task <bool> TryRegisterBackgroundTask()
{
try
{
// We should always register these
BackgroundTaskRegistrar.RegisterBackgroundTask(
typeof(AddedToLockScreenBackgroundTask),
new SystemTrigger(SystemTriggerType.LockScreenApplicationAdded, false),
new SystemCondition(SystemConditionType.InternetAvailable));
BackgroundTaskRegistrar.RegisterBackgroundTask(
typeof(RemovedFromLockScreenBackgroundTask),
new SystemTrigger(SystemTriggerType.LockScreenApplicationRemoved, false));
// Try and register the rest of our background tasks. The user could say no!
var access = await BackgroundExecutionManager.RequestAccessAsync();
if (access == BackgroundAccessStatus.AllowedMayUseActiveRealTimeConnectivity ||
access == BackgroundAccessStatus.AllowedWithAlwaysOnRealTimeConnectivity)
{
BackgroundTaskRegistrar.TryRegisterAllBackgroundTasks();
}
}
catch
{
}
return(false);
}
/// <summary>
/// Populates the page with content passed during navigation. Any saved state is also
/// provided when recreating a page from a prior session.
/// </summary>
/// <param name="sender">
/// The source of the event; typically <see cref="NavigationHelper"/>
/// </param>
/// <param name="e">Event data that provides both the navigation parameter passed to
/// <see cref="Frame.Navigate(Type, object)"/> when this page was initially requested and
/// a dictionary of state preserved by this page during an earlier
/// session. The state will be null the first time a page is visited.</param>
private async void NavigationHelper_LoadState(object sender, LoadStateEventArgs e)
{
statusBar.ProgressIndicator.ProgressValue = 0;
statusBar.ProgressIndicator.Text = ResourceLoader.GetString(Constants.RESOURCEKEY_LOADINGSTATUS_DEFAULT);
await statusBar.ProgressIndicator.ShowAsync();
DefaultViewModel.ResetFlags();
var currentSettings = SettingsViewModel.Current;
var currentDataSource = DataSourceFactory.Current;
// This can happen when navigating back after creating a feed, sleep, change or measure
// I.e. don't allow the user to return to the 'create' page for that item once it is created
if (e.NavigationParameter != null &&
string.Equals(Constants.NAVIGATION_PARAMETER_CLEARLASTBACKENTRY,
e.NavigationParameter.ToString(),
StringComparison.OrdinalIgnoreCase))
{
Frame.BackStack.RemoveAt(1);
}
// Set the default display units based on the user setting
// Conversion of values between units is handled by the Model <-> ViewModel extensions
DefaultViewModel.CurrentWeightUnit = currentSettings.UseMetricUnits
? ResourceLoader.GetString(Constants.RESOURCEKEY_UNIT_WEIGHT_METRIC)
: ResourceLoader.GetString(Constants.RESOURCEKEY_UNIT_WEIGHT_IMPERIAL);
DefaultViewModel.CurrentLengthUnit = currentSettings.UseMetricUnits
? ResourceLoader.GetString(Constants.RESOURCEKEY_UNIT_LENGTH_METRIC)
: ResourceLoader.GetString(Constants.RESOURCEKEY_UNIT_LENGTH_IMPERIAL);
await BackgroundTaskRegistrar.RegisterBackgroundTask(ResourceLoader.GetString(Constants.RESOURCEKEY_DIALOG_BACKGROUNDTASKSDISABLED));
// Push any local changes, i.e. changes made while offline, to the server
statusBar.ProgressIndicator.Text = ResourceLoader.GetString(Constants.RESOURCEKEY_LOADINGSTATUS_UPDATINGSERVER);
await currentDataSource.PushLocalChangesToServer();
statusBar.ProgressIndicator.Text = ResourceLoader.GetString(Constants.RESOURCEKEY_LOADINGSTATUS_BABY);
var babyId = await RetrieveMostRecentlyAccessedBaby(currentSettings, currentDataSource);
DefaultViewModel.Babies.Add(CurrentBaby);
statusBar.ProgressIndicator.ProgressValue = 0.1;
// Retrieve the activity schedule for the current baby,
// may have already been downloaded by the background task
statusBar.ProgressIndicator.Text = ResourceLoader.GetString(Constants.RESOURCEKEY_LOADINGSTATUS_SCHEDULE);
var currentBabiesSchedule = (await currentDataSource.GetActivitySchedule(babyId)).AsViewModel(currentSettings.UseMetricUnits,
CurrentBaby.AsModel());
DefaultViewModel.NextActivity = GetNextActivityFromSchedule(CurrentBaby, currentBabiesSchedule);
statusBar.ProgressIndicator.ProgressValue = 0.25;
statusBar.ProgressIndicator.Text = ResourceLoader.GetString(Constants.RESOURCEKEY_LOADINGSTATUS_FEED);
RetrieveCurrentFeed(currentSettings, currentBabiesSchedule);
statusBar.ProgressIndicator.Text = ResourceLoader.GetString(Constants.RESOURCEKEY_LOADINGSTATUS_SLEEP);
RetrieveCurrentSleep(currentSettings, currentBabiesSchedule);
DefaultViewModel.MainLoadingComplete = true;
statusBar.ProgressIndicator.ProgressValue = 0.5;
statusBar.ProgressIndicator.Text = ResourceLoader.GetString(Constants.RESOURCEKEY_LOADINGSTATUS_BABIES);
await RetrieveAllBabies(currentSettings, currentDataSource);
statusBar.ProgressIndicator.ProgressValue = 0.6;
statusBar.ProgressIndicator.Text = ResourceLoader.GetString(Constants.RESOURCEKEY_LOADINGSTATUS_MEASUREMENTS);
await RetrieveLatestMeasurementsForCurrentBaby(currentSettings, currentDataSource, babyId);
statusBar.ProgressIndicator.ProgressValue = 0.75;
// Retrieve the status of the current baby
if (currentBabiesSchedule.LastFeed != null)
{
DefaultViewModel.MostRecentActivities.Add(currentBabiesSchedule.LastFeed);
}
if (currentBabiesSchedule.LastSleep != null)
{
DefaultViewModel.MostRecentActivities.Add(currentBabiesSchedule.LastSleep);
}
if (currentBabiesSchedule.LastChange != null)
{
DefaultViewModel.MostRecentActivities.Add(currentBabiesSchedule.LastChange);
}
statusBar.ProgressIndicator.Text = ResourceLoader.GetString(Constants.RESOURCEKEY_LOADINGSTATUS_RHYTHM);
await RetrieveDataTrendsForCurrentBaby(currentDataSource, babyId);
statusBar.ProgressIndicator.ProgressValue = 1;
statusBar.ProgressIndicator.Text = string.Empty;
await statusBar.ProgressIndicator.HideAsync();
}