/// <summary>
/// Respond to button click to delete node from subscription list
/// -- refresh content display accordingly
/// </summary>
private void ContextMenu_OnDelete(object sender, RoutedEventArgs e)
{
Button CommandBTN = sender as Button;
try
{
var monitoredItem = CommandBTN.Tag as MonitoredItem;
if (monitoredItem == null)
{
return;
}
var subscription = monitoredItem.Subscription;
SessionsCTRL.Delete(monitoredItem);
if (subscription.MonitoredItemCount == 0)
{
// Remove subscription if no more items
CommandBTN.Tag = subscription;
ContextMenu_OnCancelSubscription(sender, e);
}
}
catch (Exception exception)
{
GuiUtils.HandleException(String.Empty, GuiUtils.CallerName(), exception);
}
}
private void StandardClient_Server_ReconnectComplete(object sender, EventArgs e)
{
if (InvokeRequired)
{
BeginInvoke(new EventHandler(StandardClient_Server_ReconnectComplete), sender, e);
return;
}
try
{
// ignore callbacks from discarded objects.
if (!Object.ReferenceEquals(sender, m_reconnectHandler))
{
return;
}
m_session = m_reconnectHandler.Session;
m_reconnectHandler.Dispose();
m_reconnectHandler = null;
BrowseCTRL.SetView(m_session, BrowseViewType.Objects, null);
SessionsCTRL.Reload(m_session);
StandardClient_KeepAlive(m_session, null);
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
/// <summary>
/// UI: connects to a specified server endpoint, and create subscription list according to configuration
/// </summary>
private async Task <bool> Connect(ConfiguredEndpoint endpoint)
{
bool result = false;
if (endpoint == null)
{
return(false);
}
// connect dialogs
Session session = await SessionsCTRL.Connect(endpoint, m_sessionConfig?.sessionname);
if (session != null)
{
if (m_sessionConfig != null)
{
NamespaceTable namespaceTable = new NamespaceTable();
DataValue namespaceArrayNodeValue = session.ReadValue(VariableIds.Server_NamespaceArray);
namespaceTable.Update(namespaceArrayNodeValue.GetValue <string[]>(null));
m_sessionConfig.endpoint = session.ConfiguredEndpoint;
foreach (MonitoredNode x in m_sessionConfig.monitoredlist)
{
CreateMonitoredItem(x.description,
session, null, ExpandedNodeId.Parse(x.nodeid, namespaceTable), x.displayname, MonitoringMode.Reporting);
}
}
m_design_session = session;
result = true;
}
return(result);
}
private void ContextMenu_OnCancel(object sender, RoutedEventArgs e)
{
try
{
SessionsCTRL.Delete(CommandBTN.Tag as Subscription);
}
catch (Exception exception)
{
GuiUtils.HandleException(String.Empty, GuiUtils.CallerName(), exception);
}
}
private void ContextMenu_OnCancel(IUICommand command)
{
try
{
SessionsCTRL.Delete(command.Id as Subscription);
}
catch (Exception exception)
{
GuiUtils.HandleException(String.Empty, GuiUtils.CallerName(), exception);
}
}
private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
{
try
{
SessionsCTRL.Close();
}
catch (Exception exception)
{
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
/// <summary>
/// Updates the status control when a keep alive event occurs.
/// </summary>
async void StandardClient_KeepAlive(Session sender, KeepAliveEventArgs e)
{
if (!Dispatcher.HasThreadAccess)
{
await Dispatcher.RunAsync(
CoreDispatcherPriority.Normal,
() =>
{
StandardClient_KeepAlive(sender, e);
});
return;
}
if (sender != null && sender.Endpoint != null)
{
ServerUrlTB.Text = Utils.Format(
"{0} ({1}) {2}",
sender.Endpoint.EndpointUrl,
sender.Endpoint.SecurityMode,
(sender.EndpointConfiguration.UseBinaryEncoding) ? "UABinary" : "XML");
}
else
{
ServerUrlTB.Text = "None";
}
if (e != null && m_session != null)
{
SessionsCTRL.UpdateSessionNode(m_session);
if (ServiceResult.IsGood(e.Status))
{
ServerStatusTB.Text = Utils.Format(
"Server Status: {0} {1:yyyy-MM-dd HH:mm:ss} {2}/{3}",
e.CurrentState,
e.CurrentTime.ToLocalTime(),
m_session.OutstandingRequestCount,
m_session.DefunctRequestCount);
ServerStatusTB.Foreground = new SolidColorBrush(Colors.Black);
ServerStatusTB.FontWeight = FontWeights.Normal;
}
else
{
ServerStatusTB.Text = String.Format(
"{0} {1}/{2}", e.Status,
m_session.OutstandingRequestCount,
m_session.DefunctRequestCount);
ServerStatusTB.Foreground = new SolidColorBrush(Colors.Red);
ServerStatusTB.FontWeight = FontWeights.Bold;
}
}
}
private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
{
try {
SessionsCTRL.Close();
if (m_masterForm == null)
{
m_application.Stop();
}
} catch (Exception exception) {
GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
}
}
private void MainPage_PageClosing(object sender, RoutedEventArgs e)
{
try
{
SessionsCTRL.Close();
if (m_masterPage == null)
{
m_application.Stop();
}
}
catch (Exception exception)
{
GuiUtils.HandleException(String.Empty, GuiUtils.CallerName(), exception);
}
}
/// <summary>
/// Connects to a server.
/// </summary>
public void Connect(ConfiguredEndpoint endpoint)
{
if (endpoint == null)
{
return;
}
Session session = SessionsCTRL.Connect(endpoint);
if (session != null)
{
m_session = session;
m_session.KeepAlive += new KeepAliveEventHandler(StandardClient_KeepAlive);
BrowseCTRL.SetView(m_session, BrowseViewType.Objects, null);
StandardClient_KeepAlive(m_session, null);
}
}
/// <summary>
/// Respond to button click to delete whole subscription list
/// -- refresh content display accordingly
/// </summary>
private void ContextMenu_OnCancelSubscription(object sender, RoutedEventArgs e)
{
Button CommandBTN = sender as Button;
try
{
foreach (MonitoredItem x in (CommandBTN.Tag as Subscription).MonitoredItems)
{
SessionsCTRL.Delete(x);
}
SessionsCTRL.Delete(CommandBTN.Tag as Subscription);
}
catch (Exception exception)
{
GuiUtils.HandleException(String.Empty, GuiUtils.CallerName(), exception);
}
}
/// <summary>
/// UI: close current server session, and clear related contents from UI
/// <summary>
public void CloseSessionView_OpcuaClient(bool resetUIButton = true)
{
Opcua_EndpointDisconnect();
if (resetUIButton)
{
var ignored = Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
BrowseCTRL.Clear();
SessionsCTRL.Clear();
gridEndpointSelector.Visibility = Visibility.Collapsed;
EndpointSelectorCTRL.Visibility = Visibility.Visible;
EndpointSelectorCTRL.IsEnabled = true;
EnableSessionOpButtons(true);
});
}
}
/// <summary>
/// UI: open server session, and display contents from server
/// <summary>
private async Task OpenSessionView_OpcuaClient()
{
try
{
var sessionname = "NewSession";
if (sessionMgmtAction == SESSIONMGMT_ACTION.EDIT)
{
sessionname = sessionInfo.sessionName;
}
var session = await Opcua_EndpointConnect(sessionname, m_sessionConfig.endpoint);
if (session != null)
{
m_design_session = session;
var ignored = Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
SessionsCTRL.AddNode(session);
gridEndpointSelector.Visibility = Visibility.Visible;
txtEndpointSelector.Text = m_design_session.Endpoint.EndpointUrl.ToString();
EndpointSelectorCTRL.Visibility = Visibility.Collapsed;
BrowseCTRL.IsEnabled = true;
SessionsCTRL.IsEnabled = true;
EnableSessionOpButtons(true);
});
}
}
catch (Exception exception)
{
GuiUtils.HandleException(String.Empty, GuiUtils.CallerName(), exception);
}
finally
{
var ignored = Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
progringConnection.IsActive = false;
});
}
}
private void ContextMenu_OnDelete(IUICommand command)
{
try
{
var monitoredItem = command.Id as MonitoredItem;
if (monitoredItem == null)
{
return;
}
var subscription = monitoredItem.Subscription;
SessionsCTRL.Delete(monitoredItem);
if (subscription.MonitoredItemCount == 0)
{
// Remove subscription if no more items
command.Id = subscription;
ContextMenu_OnCancel(command);
}
}
catch (Exception exception)
{
GuiUtils.HandleException(String.Empty, GuiUtils.CallerName(), exception);
}
}
/// <summary>
/// Connects to a server.
/// </summary>
public async Task <bool> Connect(ConfiguredEndpoint endpoint)
{
bool result = false;
if (endpoint == null)
{
return(false);
}
// connect dialogs
Session session = await SessionsCTRL.Connect(endpoint);
if (session != null)
{
//hook up new session
session.KeepAlive += new KeepAliveEventHandler(StandardClient_KeepAlive);
StandardClient_KeepAlive(session, null);
result = true;
}
return(result);
}
/// <summary>
/// Connects to a server.
/// </summary>
public async void Connect(ConfiguredEndpoint endpoint)
{
if (endpoint == null)
{
return;
}
Session session = await SessionsCTRL.Connect(endpoint);
if (session != null)
{
// stop any reconnect operation.
if (m_reconnectHandler != null)
{
m_reconnectHandler.Dispose();
m_reconnectHandler = null;
}
m_session = session;
m_session.KeepAlive += new KeepAliveEventHandler(StandardClient_KeepAlive);
BrowseCTRL.SetView(m_session, BrowseViewType.Objects, null);
StandardClient_KeepAlive(m_session, null);
}
}
