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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Data;
using Tango.Core.Commands;
using Tango.Core.DI;
using Tango.FSE.Common;
using Tango.FSE.Common.Storage;
using Tango.FSE.Insights.SciChart;
using Tango.SharedUI.Components;
namespace Tango.FSE.Insights.Dialogs
{
public class ExportToCsvDialogViewVM : FSEDialogViewVM
{
private ICollectionView _view;
private bool _preventSelectAllChange;
[TangoInject]
private IStorageProvider StorageProvider { get; set; }
public SelectedObjectCollection<InsightsChart> SelectedCharts { get; set; }
private String _filter;
public String Filter
{
get { return _filter; }
set { _filter = value; RaisePropertyChangedAuto(); OnFilterChanged(); }
}
private bool? _selectAll;
public bool? SelectAll
{
get { return _selectAll; }
set
{
if (_selectAll != value)
{
_selectAll = value;
RaisePropertyChangedAuto();
OnSelectAllChanged();
}
}
}
private String _selectedFile;
public String SelectedFile
{
get { return _selectedFile; }
set { _selectedFile = value; RaisePropertyChangedAuto(); InvalidateRelayCommands(); }
}
public RelayCommand SelectFileCommand { get; set; }
public ExportToCsvDialogViewVM(List<InsightsChart> availableCharts, List<InsightsChart> visibleCharts)
{
TangoIOC.Default.Inject(this);
OKText = "EXPORT";
SelectedCharts = new SelectedObjectCollection<InsightsChart>(availableCharts.OrderByDescending(x => visibleCharts.Contains(x)).ToObservableCollection(), visibleCharts.ToObservableCollection());
SelectedCharts.SelectionChanged += SelectedCharts_SelectionChanged;
_view = CollectionViewSource.GetDefaultView(SelectedCharts);
_view.Filter = FilterCharts;
SelectFileCommand = new RelayCommand(SelectFile);
}
private async void SelectFile()
{
var result = await StorageProvider.SaveFile("Export Monitors CSV", "CSV Files|*.csv", null, ".csv");
if (result.Confirmed)
{
SelectedFile = result.SelectedItem;
}
}
private bool FilterCharts(object obj)
{
if (String.IsNullOrWhiteSpace(Filter)) return true;
return (obj as SelectedObject<InsightsChart>).Data.Description.ToLower().Contains(Filter.ToLower());
}
private void SelectedCharts_SelectionChanged(object sender, EventArgs e)
{
if (!_preventSelectAllChange)
{
if (SelectedCharts.All(x => x.IsSelected))
{
_selectAll = true;
}
else if (SelectedCharts.Any(x => x.IsSelected))
{
_selectAll = null;
}
else
{
_selectAll = false;
}
}
RaisePropertyChanged(nameof(SelectAll));
InvalidateRelayCommands();
}
protected override bool CanOK()
{
return base.CanOK() && SelectedCharts.SynchedSource.Count > 0 && SelectedFile != null;
}
private void OnFilterChanged()
{
_view?.Refresh();
}
private void OnSelectAllChanged()
{
if (SelectAll != null)
{
_preventSelectAllChange = true;
SelectedCharts.ToList().ForEach(x => x.IsSelected = SelectAll.Value);
_preventSelectAllChange = false;
}
}
}
}
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