private async void NavigationHelper_LoadState(object sender, LoadStateEventArgs e)
{
int Id = (int)e.NavigationParameter;
this.progressRing.IsActive = true;
var Item = await CoursesSource.GetCourseAsync(Id);
this.progressRing.IsActive = false;
if (Item == null)
{
if (Frame.CanGoBack)
{
Frame.GoBack();
await ShowErrorAsync();
}
else
{
if (!Frame.Navigate(typeof(MainPage), "FoodLook 2"))
{
throw new Exception();
}
Frame.BackStack.Clear();
await ShowErrorAsync();
}
}
else
{
this.DefaultViewModel[CourseItem] = Item;
this.DefaultViewModel[Label] = Item.Label;
this.LikeButtonToggle();
this.FavoriteButtonToggle();
if (Item.Vegetarian)
{
this.Vegetarian.Text = ResourceLoader.GetForCurrentView("Resources").GetString("Vegetarian");
}
else
{
this.Vegetarian.Text = ResourceLoader.GetForCurrentView("Resources").GetString("Unvegetarian");
}
this.CoursePageCommandBar.Visibility = Visibility.Visible;
this.CoursePagePivot.Visibility = Visibility.Visible;
}
}
private async void FavoriteButton_Click(object sender, RoutedEventArgs e)
{
var Item = this.DefaultViewModel[CourseItem] as Course;
var statusBar = StatusBar.GetForCurrentView();
statusBar.ProgressIndicator.Text = ResourceLoader.GetForCurrentView("Resources").GetString("UpdateMessage");
statusBar.ProgressIndicator.ProgressValue = null;
await statusBar.ProgressIndicator.ShowAsync();
this.FavoriteButton.IsEnabled = false;
if (Item.CourseSocial.FavoriteId == -1)
{
bool isSuccess = await CoursesSource.AddToFavoriteAsync(Item.Id);
await statusBar.ProgressIndicator.HideAsync();
if (isSuccess)
{
ShowMessageAsync(ResourceLoader.GetForCurrentView("Resources").GetString("FavoriteSuccessfulAdding"));
}
else
{
ShowMessageAsync(ResourceLoader.GetForCurrentView("Resources").GetString("ErrorMessage"));
}
FavoriteButtonToggle();
}
else
{
bool isSuccess = await CoursesSource.RemoveFromFavoriteAsync(Item.Id);
await statusBar.ProgressIndicator.HideAsync();
if (isSuccess)
{
ShowMessageAsync(ResourceLoader.GetForCurrentView("Resources").GetString("FavoriteSuccessfulRemoving"));
}
else
{
ShowMessageAsync(ResourceLoader.GetForCurrentView("Resources").GetString("ErrorMessage"));
}
FavoriteButtonToggle();
}
this.FavoriteButton.IsEnabled = true;
}
