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using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Data;
using Tango.Core;
using Tango.Core.Commands;
using Tango.Logging;
using Tango.PPC.Common;
using Tango.PPC.Technician.Dialogs;
namespace Tango.PPC.Technician.ViewModels
{
public class LoggingViewVM : PPCViewModel
{
private const int MAX_LOGS = 1000;
private List<LogItemBase> paused_logs;
public SynchronizedObservableCollection<LogItemBase> ApplicationLogs { get; set; }
public SynchronizedObservableCollection<LogItemBase> EmbeddedLogs { get; set; }
private LogItemBase _selectedLog;
public LogItemBase SelectedLog
{
get { return _selectedLog; }
set { _selectedLog = value; RaisePropertyChangedAuto(); OnSelectedLogChanged(); }
}
private ICollectionView _applicationLogsViewSource;
public ICollectionView ApplicationLogsViewSource
{
get { return _applicationLogsViewSource; }
set { _applicationLogsViewSource = value; RaisePropertyChangedAuto(); }
}
private String _filter;
public String Filter
{
get { return _filter; }
set
{
_filter = value;
RaisePropertyChangedAuto();
ApplicationLogsViewSource.Refresh();
}
}
private bool _isPaused;
public bool IsPaused
{
get { return _isPaused; }
set { _isPaused = value; RaisePropertyChangedAuto(); OnIsPausedChanged(); }
}
public RelayCommand ClearCommand { get; set; }
public LoggingViewVM()
{
ApplicationLogs = new SynchronizedObservableCollection<LogItemBase>();
EmbeddedLogs = new SynchronizedObservableCollection<LogItemBase>();
ApplicationLogsViewSource = CollectionViewSource.GetDefaultView(ApplicationLogs);
paused_logs = new List<LogItemBase>();
LogManager.NewLog += LogManager_NewLog;
ClearCommand = new RelayCommand(ClearLogs);
Filter = "error";
ApplicationLogsViewSource.Filter = (x) =>
{
try
{
LogItemBase log = x as LogItemBase;
return String.IsNullOrWhiteSpace(Filter) || log.Category.ToString().ToLower().Contains(Filter.ToLower()) || log.Message.ToLower().Contains(Filter.ToLower());
}
catch
{
return false;
}
};
}
private void OnIsPausedChanged()
{
foreach (var log in paused_logs)
{
LogManager_NewLog(this, log);
}
paused_logs.Clear();
}
private void LogManager_NewLog(object sender, LogItemBase log)
{
if (!IsPaused)
{
InvokeUI(() =>
{
ApplicationLogs.Insert(0, log);
try
{
if (ApplicationLogs.Count > MAX_LOGS)
{
ApplicationLogs.Remove(ApplicationLogs.Last());
}
}
catch
{
//I don't know if this will cause an exception but I'm tired.
}
});
}
else
{
paused_logs.Add(log);
}
}
private void ClearLogs()
{
ApplicationLogs.Clear();
paused_logs.Clear();
}
private async void OnSelectedLogChanged()
{
if (SelectedLog != null)
{
await NotificationProvider.ShowDialog<LogItemDetailsViewVM>(new LogItemDetailsViewVM()
{
Log = SelectedLog,
});
SelectedLog = null;
}
}
public override void OnApplicationStarted()
{
}
}
}
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