/// <summary>
/// every <paramref name="collectionRefreshInterval"/>, assigns the list of All Processes in the system
/// to the mainWindowVM.Processes,
/// every <paramref name="processDataRefreshInterval"/>, refreshes each process in the mainWindowVM.Processes
/// </summary>
public void StartRefreshing(int collectionRefreshInterval, int processDataRefreshInterval,
Action onBeforeUpdate, Action onCollectionUpdate)
{
if (collectionRefreshInterval < 0 || processDataRefreshInterval < 0)
{
throw new ArgumentException("interval cannot be less then zero");
}
if (mainWindowViewModel.Processes == null)
{
throw new ArgumentNullException(nameof(mainWindowViewModel.Processes));
}
ProcessesUpdater.UpdateProcessCollection(ProcessFetcher.FetchProcesses(), mainWindowViewModel.Processes);
Task.Run(() =>
{
UpdateProcessesCollectionPeriodicallyAsync(collectionRefreshInterval,
onBeforeUpdate, onCollectionUpdate).Wait();
});
//Task.Run(() =>
//{
// RefreshProcessesPeriodicallyAsync(processDataRefreshInterval).Wait();
//});
}
async Task UpdateProcessesCollectionPeriodicallyAsync(int interval, Action onBeforeUpdate, Action onUpdate)
{
while (true)
{
await Task.Delay(TimeSpan.FromSeconds(interval));
Debug.Assert(mainWindowViewModel != null);
Debug.Assert(mainWindowViewModel.Processes != null);
IEnumerable <ProcessData> processes = ProcessFetcher.FetchProcesses();
synchronizationContext.Post(_ =>
{
onBeforeUpdate?.Invoke();
ProcessesUpdater.UpdateProcessCollection(processes, mainWindowViewModel.Processes);
Debug.WriteLine("updated collection");
onUpdate?.Invoke();
}, 1);
//return;
}
}