private void LbEditBtn_Click(object sender, RoutedEventArgs e)
{
//a button on list view has been clicked
Button button = sender as Button;
//walk up the tree to find the ListboxItem
DependencyObject tvi = Helpers.ListUtility.FindParentTreeItem(button, typeof(ListBoxItem));
//if not null cast the Dependancy object to type of Listbox item.
if (tvi != null)
{
ListBoxItem lbi = tvi as ListBoxItem;
IDashboardTimeSeriesPoint timeSeriesPoint = (IDashboardTimeSeriesPoint)lbi.DataContext;
// Open edit window for this point
if (timeSeriesPoint is DashboardScadaTimeSeriesPoint scadaTimeSeriesPoint)
{
ScadaTimeSeriesPointEditWindow scadaTimeSeriesPointEditWindow = new ScadaTimeSeriesPointEditWindow(new DashboardScadaTimeSeriesPoint(scadaTimeSeriesPoint));
scadaTimeSeriesPointEditWindow.ShowDialog();
if (scadaTimeSeriesPointEditWindow.DialogResult == true)
{
// update the point
int pointIndex = dataPointsVM.dashboardTimeSeriesPoints.IndexOf(timeSeriesPoint);
if (pointIndex >= 0)
{
dataPointsVM.dashboardTimeSeriesPoints[pointIndex] = scadaTimeSeriesPointEditWindow.scadaTimeSeriesPointVM.ScadaTimeSeriesPoint;
ICollectionView view = CollectionViewSource.GetDefaultView(dataPointsVM.dashboardTimeSeriesPoints);
view.Refresh();
}
}
}
}
}
// Implementing interface
public List <IPointResult> FetchHistoricalPointData(IDashboardTimeSeriesPoint dashboardTimeSeriesPoint)
{
if (dashboardTimeSeriesPoint.GetType().FullName == typeof(DashboardScadaTimeSeriesPoint).FullName)
{
List <ScadaPointResult> scadaPointResults = FetchHistoricalPointData((DashboardScadaTimeSeriesPoint)dashboardTimeSeriesPoint);
List <IPointResult> pointResults = new List <IPointResult>();
for (int i = 0; i < scadaPointResults.Count; i++)
{
pointResults.Add(scadaPointResults.ElementAt(i));
}
return(pointResults);
}
return(null);
}
private void LbDeleteBtn_Click(object sender, RoutedEventArgs e)
{
if (MessageBox.Show("Remove Data Point ?", "Cell Data Points Configuration", MessageBoxButton.YesNo, MessageBoxImage.Warning) == MessageBoxResult.No)
{
//do no stuff
return;
}
else
{
//a button on list view has been clicked
Button button = sender as Button;
//walk up the tree to find the ListboxItem
DependencyObject tvi = Helpers.ListUtility.FindParentTreeItem(button, typeof(ListBoxItem));
//if not null cast the Dependancy object to type of Listbox item.
if (tvi != null)
{
ListBoxItem lbi = tvi as ListBoxItem;
// Delete the object from Observable Collection
IDashboardTimeSeriesPoint timeSeriesPoint = (IDashboardTimeSeriesPoint)lbi.DataContext;
dataPointsVM.dashboardTimeSeriesPoints.Remove(timeSeriesPoint);
}
}
}
public async Task FetchAndPlotData()
{
// stop running fetch tasks
if (cts != null)
{
//cts.Cancel();
return;
}
// ***Instantiate the CancellationTokenSource.
cts = new CancellationTokenSource();
// clear the current series of the plot
SeriesCollection.Clear();
// get each point data and bind it to the Series Collection
// iterate through each timeseries point in the config
for (int i = 0; i < LinePlotCellConfig_.TimeSeriesPoints_.Count; i++)
{
IDashboardTimeSeriesPoint pnt = LinePlotCellConfig_.TimeSeriesPoints_.ElementAt(i);
if (pnt.GetType().FullName == typeof(DashboardScadaTimeSeriesPoint).FullName)
{
// handle if the point is a scada point
ScadaFetcher scadaFetcher = new ScadaFetcher();
DashboardScadaTimeSeriesPoint scadaTimeseriesPnt = (DashboardScadaTimeSeriesPoint)pnt;
// fetch the results from the data fetcher
List <ScadaPointResult> results = new List <ScadaPointResult>();
try
{
// ***Send a token to carry the message if cancellation is requested.
results = await scadaFetcher.FetchHistoricalPointDataAsync(scadaTimeseriesPnt, cts.Token);
}
// *** If cancellation is requested, an OperationCanceledException results.
catch (OperationCanceledException)
{
AddLinesToConsole("Existing Fetch task cancelled");
}
catch (Exception e)
{
AddLinesToConsole($"Error in running fetch task: {e.Message}");
}
if (results == null)
{
// handle the null results by printing in the console
AddLinesToConsole("No values returned after fetching");
results = new List <ScadaPointResult>();
}
// Get Plot Values from ScadaResults
List <double> plotVals = new List <double>();
for (int resCounter = 0; resCounter < results.Count; resCounter++)
{
ScadaPointResult res = results[resCounter];
plotVals.Add(res.Val_);
}
// change the plot values spacing in secs and the starting dateTime
if (i == 0)
{
MeasPeriodSecs_ = scadaTimeseriesPnt.FetchPeriodSecs_;
if (plotVals.Count > 0)
{
StartDateTime_ = new DateTime(results[0].ResultTime_.Ticks);
}
}
// getting the required color
string colorString = scadaTimeseriesPnt.ColorString_;
if (colorString == null)
{
colorString = "NULL";
}
SolidColorBrush requiredColorBrush;
try
{
requiredColorBrush = new SolidColorBrush((Color)ColorConverter.ConvertFromString(colorString));
}
catch (Exception ex)
{
requiredColorBrush = null;
//AddLinesToConsole($"Unable to parse the color string \"{colorString}\"");
}
// Add the Data Point fetch results to the Plot lines Collection
SeriesCollection.Add(new GLineSeries()
{
Title = scadaTimeseriesPnt.ScadaPoint_.Name_, Values = new GearedValues <double>(plotVals), PointGeometry = null, Fill = Brushes.Transparent, StrokeThickness = scadaTimeseriesPnt.StrokeThickness_, LineSmoothness = 0, Stroke = requiredColorBrush
});
// https://stackoverflow.com/questions/2109756/how-do-i-get-the-color-from-a-hexadecimal-color-code-using-net
}
}
// ***Set the CancellationTokenSource to null when the download is complete.
cts = null;
}
