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using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Tango.BL;
using Tango.BL.Entities;
using Tango.MachineStudio.Common;
using System.Data.Entity;
using Tango.MachineStudio.Common.Notifications;
using Tango.MachineStudio.Dispensers.Contracts;
using Tango.Core.Commands;
namespace Tango.MachineStudio.Dispensers.ViewModels
{
public class MainViewVM : StudioViewModel<IMainView>
{
private ObservablesContext _dbContext;
private ObservablesContext _activeContext;
private INotificationProvider _notification;
private ObservableCollection<Dispenser> _dispensers;
public ObservableCollection<Dispenser> Dispensers
{
get { return _dispensers; }
set { _dispensers = value; RaisePropertyChangedAuto(); }
}
private Dispenser _selectedDispenser;
public Dispenser SelectedDispenser
{
get { return _selectedDispenser; }
set { _selectedDispenser = value; RaisePropertyChangedAuto(); InvalidateRelayCommands(); }
}
private Dispenser _activeDispenser;
public Dispenser ActiveDispenser
{
get { return _activeDispenser; }
set { _activeDispenser = value; RaisePropertyChangedAuto(); }
}
private String _filter;
public String Filter
{
get { return _filter; }
set { _filter = value; RaisePropertyChangedAuto(); OnFilterChanged(); }
}
public RelayCommand AddDispenserCommand { get; set; }
public RelayCommand RemoveDispenserCommand { get; set; }
public RelayCommand ManageDispenserCommand { get; set; }
public RelayCommand BackToDispensersCommand { get; set; }
public RelayCommand SaveCommand { get; set; }
public MainViewVM(INotificationProvider notificationProvider)
{
_notification = notificationProvider;
ManageDispenserCommand = new RelayCommand(ManageSelectedDispenser,() => SelectedDispenser != null);
BackToDispensersCommand = new RelayCommand(() => { View.NavigateTo(DispensersNavigationView.DispensersView); });
}
private async void OnFilterChanged()
{
if (Filter != null)
{
IsFree = false;
Dispensers = (await _dbContext.Dispensers.Where(x => x.SerialNumber.StartsWith(Filter)).ToListAsync()).ToObservableCollection();
IsFree = true;
}
}
private async void ManageSelectedDispenser()
{
if (SelectedDispenser != null)
{
if (_activeContext != null)
{
_activeContext.Dispose();
}
using (_notification.PushTaskItem("Loading dispenser data..."))
{
_activeContext = ObservablesContext.CreateDefault();
ActiveDispenser = await _activeContext.Dispensers.SingleOrDefaultAsync(x => x.Guid == SelectedDispenser.Guid);
View.NavigateTo(DispensersNavigationView.DispenserView);
}
}
else
{
ActiveDispenser = null;
}
}
public async override void OnApplicationReady()
{
_dbContext = ObservablesContext.CreateDefault();
await _dbContext.DispenserTypes.LoadAsync();
}
}
}
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