public ItemsViewModel()
{
Title = "Badges";
LoadItemsCommand = new Command(StartLoadItems);
AddItemCommand = new Command(() => Navigation.PushAsync(new EditorPage(new AddItemViewModel())),
() => App.DataStore.IsAvailable);
EditItemCommand = new Command((item) =>
{
var vm = new EditItemViewModel(((BadgeViewModel)item).Badge);
Navigation.PushAsync(new EditorPage(vm));
});
MessagingCenter.Subscribe <EditorPageViewModel>(this, "ItemChanged", (sender) =>
{
StartLoadItems();
});
MessagingCenter.Subscribe <FilterViewModel, BadgeFilter>(this, FilterViewModel.FilterChangedMessage, (sender, filter) =>
{
_filter = filter;
StartLoadItems();
});
App.DataStore.PropertyChanged += (sender, e) =>
{
if (e.PropertyName == nameof(App.DataStore.IsAvailable))
{
StartLoadItems();
AddItemCommand?.ChangeCanExecute();
}
};
}
public FilterViewModel()
{
Title = "Фильтр";
Sections = new ObservableCollection <Section>(App.DataStore.GetGroups());
Sections.Insert(0, Section.All);
Years = new List <int>();
int currentYear = DateTime.Now.Year;
for (int i = 0; i < 10; i++)
{
Years.Add(currentYear - i);
}
App.DataStore.PropertyChanged += (sender, e) =>
{
if (e.PropertyName == nameof(App.DataStore.IsAvailable) && App.DataStore.IsAvailable)
{
Sections.Clear();
Sections.Add(Section.All);
foreach (var item in App.DataStore.GetGroups())
{
Sections.Add(item);
}
}
};
PropertyChanged += (sender, e) =>
{
if (e.PropertyName == nameof(SelectedSection) || e.PropertyName == nameof(SelectedYearIndex))
{
int year = Years[SelectedYearIndex >= 0 ? SelectedYearIndex : 0];
int sectionId = (SelectedSection ?? Section.All).Id;
var filter = new BadgeFilter(year, sectionId);
MessagingCenter.Send(this, FilterChangedMessage, filter);
}
};
}