/// <summary>
/// Returns the AbsoluteDeadband if the filter specifies one. Zero otherwize.
/// </summary>
public static double GetAbsoluteDeadband(MonitoringFilter filter)
{
DataChangeFilter datachangeFilter = filter as DataChangeFilter;
if (datachangeFilter == null)
{
return(0.0);
}
if (datachangeFilter.DeadbandType != (uint)Opc.Ua.DeadbandType.Absolute)
{
return(0.0);
}
return(datachangeFilter.DeadbandValue);
}
/// <summary>
/// Prompts the user to edit the monitored item.
/// </summary>
public bool ShowDialog(Session session, MonitoredItem monitoredItem, bool isEvent)
{
if (!monitoredItem.Created)
{
NodeBTN.Session = session;
NodeBTN.SelectedNode = monitoredItem.StartNodeId;
}
// hide fields not used for events.
NodeLB.Visible = !monitoredItem.Created;
NodeTB.Visible = !monitoredItem.Created;
NodeBTN.Visible = !monitoredItem.Created;
AttributeLB.Visible = !isEvent && !monitoredItem.Created;
AttributeCB.Visible = !isEvent && !monitoredItem.Created;
IndexRangeLB.Visible = !isEvent && !monitoredItem.Created;
IndexRangeTB.Visible = !isEvent && !monitoredItem.Created;
DataEncodingLB.Visible = !isEvent && !monitoredItem.Created;
DataEncodingCB.Visible = !isEvent && !monitoredItem.Created;
MonitoringModeLB.Visible = !monitoredItem.Created;
MonitoringModeCB.Visible = !monitoredItem.Created;
SamplingIntervalLB.Visible = true;
SamplingIntervalUP.Visible = true;
QueueSizeLB.Visible = !isEvent;
QueueSizeUP.Visible = !isEvent;
DiscardOldestLB.Visible = true;
DiscardOldestCK.Visible = true;
DeadbandTypeLB.Visible = !isEvent;
DeadbandTypeCB.Visible = !isEvent;
DeadbandValueLB.Visible = !isEvent;
DeadbandValueUP.Visible = !isEvent;
TriggerTypeLB.Visible = !isEvent;
TriggerTypeCB.Visible = !isEvent;
// fill in values.
SamplingIntervalUP.Value = monitoredItem.SamplingInterval;
DiscardOldestCK.Checked = monitoredItem.DiscardOldest;
if (!isEvent)
{
AttributeCB.SelectedIndex = (int)(monitoredItem.AttributeId - 1);
IndexRangeTB.Text = monitoredItem.IndexRange;
MonitoringModeCB.SelectedItem = monitoredItem.MonitoringMode;
QueueSizeUP.Value = monitoredItem.QueueSize;
DataChangeFilter filter = monitoredItem.Filter as DataChangeFilter;
if (filter != null)
{
DeadbandTypeCB.SelectedItem = (DeadbandType)filter.DeadbandType;
DeadbandValueUP.Value = (decimal)filter.DeadbandValue;
TriggerTypeCB.SelectedItem = filter.Trigger;
}
if (!monitoredItem.Created)
{
// fetch the available encodings for the first node in the list from the server.
IVariableBase variable = session.NodeCache.Find(monitoredItem.StartNodeId) as IVariableBase;
DataEncodingCB.Items.Add(new EncodingInfo());
DataEncodingCB.SelectedIndex = 0;
if (variable != null)
{
if (session.NodeCache.IsTypeOf(variable.DataType, Opc.Ua.DataTypeIds.Structure))
{
foreach (INode encoding in session.NodeCache.Find(variable.DataType, Opc.Ua.ReferenceTypeIds.HasEncoding, false, true))
{
DataEncodingCB.Items.Add(new EncodingInfo() { EncodingName = encoding.BrowseName });
if (monitoredItem.Encoding == encoding.BrowseName)
{
DataEncodingCB.SelectedIndex = DataEncodingCB.Items.Count - 1;
}
}
}
}
}
}
else
{
AttributeCB.SelectedIndex = ((int)Attributes.EventNotifier - 1);
}
if (base.ShowDialog() != DialogResult.OK)
{
return false;
}
// update monitored item.
if (!monitoredItem.Created)
{
monitoredItem.StartNodeId = NodeBTN.SelectedNode;
monitoredItem.DisplayName = session.NodeCache.GetDisplayText(monitoredItem.StartNodeId);
monitoredItem.RelativePath = null;
monitoredItem.AttributeId = (uint)(AttributeCB.SelectedIndex + 1);
monitoredItem.MonitoringMode = (MonitoringMode)MonitoringModeCB.SelectedItem;
}
monitoredItem.SamplingInterval = (int)SamplingIntervalUP.Value;
monitoredItem.DiscardOldest = DiscardOldestCK.Checked;
if (!isEvent)
{
if (!monitoredItem.Created)
{
monitoredItem.IndexRange = IndexRangeTB.Text.Trim();
monitoredItem.Encoding = ((EncodingInfo)DataEncodingCB.SelectedItem).EncodingName;
}
monitoredItem.QueueSize = (uint)QueueSizeUP.Value;
DataChangeTrigger trigger = (DataChangeTrigger)TriggerTypeCB.SelectedItem;
DeadbandType deadbandType = (DeadbandType)DeadbandTypeCB.SelectedItem;
if (monitoredItem.Filter != null || deadbandType != DeadbandType.None || trigger != DataChangeTrigger.StatusValue)
{
DataChangeFilter filter = new DataChangeFilter();
filter.DeadbandType = (uint)deadbandType;
filter.DeadbandValue = (double)DeadbandValueUP.Value;
filter.Trigger = trigger;
monitoredItem.Filter = filter;
}
}
else
{
if (!monitoredItem.Created)
{
monitoredItem.IndexRange = null;
monitoredItem.Encoding = null;
}
monitoredItem.QueueSize = 0;
monitoredItem.Filter = new EventFilter();
}
return true;
}
/// <summary>
/// Changes the deadband for the currently selected monitored items.
/// </summary>
private void Monitoring_Deadband_Click(object sender, EventArgs e)
{
try
{
// check if operation is currently allowed.
if (m_session == null || m_subscription == null || MonitoredItemsLV.SelectedItems.Count == 0)
{
return;
}
// determine the filter being requested.
DataChangeFilter filter = new DataChangeFilter();
filter.Trigger = DataChangeTrigger.StatusValue;
if (sender == Monitoring_Deadband_Absolute_5MI)
{
filter.DeadbandType = (uint)DeadbandType.Absolute;
filter.DeadbandValue = 5.0;
}
else if (sender == Monitoring_Deadband_Absolute_10MI)
{
filter.DeadbandType = (uint)DeadbandType.Absolute;
filter.DeadbandValue = 10.0;
}
else if (sender == Monitoring_Deadband_Absolute_25MI)
{
filter.DeadbandType = (uint)DeadbandType.Absolute;
filter.DeadbandValue = 25.0;
}
else if (sender == Monitoring_Deadband_Percentage_1MI)
{
filter.DeadbandType = (uint)DeadbandType.Percent;
filter.DeadbandValue = 1.0;
}
else if (sender == Monitoring_Deadband_Percentage_5MI)
{
filter.DeadbandType = (uint)DeadbandType.Percent;
filter.DeadbandValue = 5.0;
}
else if (sender == Monitoring_Deadband_Percentage_10MI)
{
filter.DeadbandType = (uint)DeadbandType.Percent;
filter.DeadbandValue = 10.0;
}
else
{
filter = null;
}
// update the monitoring mode.
List<MonitoredItem> itemsToChange = new List<MonitoredItem>();
for (int ii = 0; ii < MonitoredItemsLV.SelectedItems.Count; ii++)
{
MonitoredItem monitoredItem = MonitoredItemsLV.SelectedItems[ii].Tag as MonitoredItem;
if (monitoredItem != null)
{
monitoredItem.Filter = filter;
itemsToChange.Add(monitoredItem);
}
}
// apply the changes to the server.
m_subscription.ApplyChanges();
// update the display.
for (int ii = 0; ii < itemsToChange.Count; ii++)
{
ListViewItem item = itemsToChange[ii].Handle as ListViewItem;
if (item != null)
{
item.SubItems[8].Text = String.Empty;
if (ServiceResult.IsBad(itemsToChange[ii].Status.Error))
{
itemsToChange[ii].Filter = null;
item.SubItems[8].Text = itemsToChange[ii].Status.Error.StatusCode.ToString();
}
item.SubItems[4].Text = DeadbandFilterToText(itemsToChange[ii].Status.Filter);
}
}
}
catch (Exception exception)
{
ClientUtils.HandleException(this.Text, exception);
}
}