mirror of
https://github.com/OPCFoundation/UA-.NETStandard.git
synced 2026-10-22 09:37:12 +08:00
AlinMoldovean
481 lines
16 KiB
C#
481 lines
16 KiB
C#
/* ========================================================================
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* Copyright (c) 2005-2019 The OPC Foundation, Inc. All rights reserved.
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*
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* OPC Foundation MIT License 1.00
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following
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* conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* The complete license agreement can be found here:
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* http://opcfoundation.org/License/MIT/1.00/
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* ======================================================================*/
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Data;
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using System.Drawing;
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using System.Linq;
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using System.Text;
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using System.Windows.Forms;
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using System.Reflection;
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using Opc.Ua.Client;
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using Opc.Ua.Client.Controls;
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namespace Opc.Ua.Sample.Controls
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{
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public partial class SubscriptionDlg : Form
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{
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#region Constructors
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public SubscriptionDlg()
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{
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InitializeComponent();
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this.Icon = ClientUtils.GetAppIcon();
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m_SessionNotification = new NotificationEventHandler(Session_Notification);
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m_SubscriptionStateChanged = new SubscriptionStateChangedEventHandler(Subscription_StateChanged);
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m_PublishStatusChanged = new EventHandler(Subscription_PublishStatusChanged);
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}
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#endregion
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#region Private Fields
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private Subscription m_subscription;
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private NotificationEventHandler m_SessionNotification;
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private SubscriptionStateChangedEventHandler m_SubscriptionStateChanged;
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private CreateMonitoredItemsDlg m_createDialog;
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private EventHandler m_PublishStatusChanged;
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#endregion
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#region Public Interface
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/// <summary>
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/// Creates a new subscription.
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/// </summary>
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public Subscription New(Session session)
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{
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if (session == null) throw new ArgumentNullException("session");
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Subscription subscription = new Subscription(session.DefaultSubscription);
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if (!new SubscriptionEditDlg().ShowDialog(subscription))
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{
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return null;
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}
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session.AddSubscription(subscription);
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subscription.Create();
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Subscription duplicateSubscription = session.Subscriptions.FirstOrDefault(s => s.Id != 0 && s.Id.Equals(subscription.Id) && s != subscription);
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if (duplicateSubscription != null)
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{
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Utils.Trace("Duplicate subscription was created with the id: {0}", duplicateSubscription.Id);
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DialogResult result = MessageBox.Show("Duplicate subscription was created with the id: " + duplicateSubscription.Id + ". Do you want to keep it?", "Warning", MessageBoxButtons.YesNo);
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if (result == System.Windows.Forms.DialogResult.No)
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{
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duplicateSubscription.Delete(false);
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session.RemoveSubscription(subscription);
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return null;
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}
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}
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Show(subscription);
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return subscription;
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}
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/// <summary>
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/// Displays the dialog.
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/// </summary>
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public void Show(Subscription subscription)
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{
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if (subscription == null) throw new ArgumentNullException("subscription");
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Show();
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BringToFront();
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// remove previous subscription.
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if (m_subscription != null)
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{
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m_subscription.StateChanged -= m_SubscriptionStateChanged;
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m_subscription.PublishStatusChanged -= m_PublishStatusChanged;
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m_subscription.Session.Notification -= m_SessionNotification;
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}
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// start receiving notifications from the new subscription.
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m_subscription = subscription;
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if (subscription != null)
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{
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m_subscription.StateChanged += m_SubscriptionStateChanged;
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m_subscription.PublishStatusChanged += m_PublishStatusChanged;
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m_subscription.Session.Notification += m_SessionNotification;
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}
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MonitoredItemsCTRL.Initialize(subscription);
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EventsCTRL.Initialize(subscription, null);
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DataChangesCTRL.Initialize(subscription, null);
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WindowMI_Click(WindowDataChangesMI, null);
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UpdateStatus();
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}
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#endregion
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#region Private Methods
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/// <summary>
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/// Updates the controls displaying the status of the subscription.
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/// </summary>
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private void UpdateStatus()
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{
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NotificationMessage message = null;
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if (m_subscription != null)
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{
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message = m_subscription.LastNotification;
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}
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PublishingEnabledTB.Text = String.Empty;
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if (m_subscription != null)
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{
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PublishingEnabledTB.Text = (m_subscription.CurrentPublishingEnabled)?"Enabled":"Disabled";
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}
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LastUpdateTimeTB.Text = String.Empty;
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if (message != null)
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{
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LastUpdateTimeTB.Text = String.Format("{0:HH:mm:ss}", message.PublishTime.ToLocalTime());
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}
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LastMessageIdTB.Text = String.Empty;
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if (message != null)
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{
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LastMessageIdTB.Text = String.Format("{0}", message.SequenceNumber);
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}
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// determine what window to show.
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bool hasEvents = false;
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bool hasDatachanges = false;
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foreach (MonitoredItem monitoredItem in m_subscription.MonitoredItems)
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{
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if (monitoredItem.Filter is EventFilter)
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{
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hasEvents = true;
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}
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if (monitoredItem.NodeClass == NodeClass.Variable)
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{
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hasDatachanges = true;
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}
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}
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// enable appropriate windows.
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WindowEventsMI.Enabled = hasEvents;
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WindowDataChangesMI.Enabled = hasDatachanges;
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// show the datachange window if there are no event items.
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if (hasDatachanges && !hasEvents)
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{
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WindowMI_Click(WindowDataChangesMI, null);
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}
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// show events window if there are no datachange items.
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if (hasEvents && !hasDatachanges)
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{
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WindowMI_Click(WindowEventsMI, null);
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}
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}
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#endregion
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#region Event Handlers
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/// <summary>
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/// Processes a Publish repsonse from the server.
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/// </summary>
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void Session_Notification(Session session, NotificationEventArgs e)
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{
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if (InvokeRequired)
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{
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BeginInvoke(m_SessionNotification, session, e);
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return;
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}
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else if (!IsHandleCreated)
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{
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return;
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}
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try
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{
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// ignore notifications for other subscriptions.
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if (!Object.ReferenceEquals(m_subscription, e.Subscription))
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{
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return;
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}
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// notify controls of the change.
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EventsCTRL.NotificationReceived(e);
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DataChangesCTRL.NotificationReceived(e);
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// update subscription status.
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UpdateStatus();
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}
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catch (Exception exception)
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{
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GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
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}
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}
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/// <summary>
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/// Handles a change to the state of the subscription.
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/// </summary>
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void Subscription_StateChanged(Subscription subscription, SubscriptionStateChangedEventArgs e)
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{
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if (InvokeRequired)
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{
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BeginInvoke(m_SubscriptionStateChanged, subscription, e);
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return;
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}
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else if (!IsHandleCreated)
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{
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return;
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}
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try
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{
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// ignore notifications for other subscriptions.
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if (!Object.ReferenceEquals(m_subscription, subscription))
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{
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return;
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}
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// notify controls of the change.
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EventsCTRL.SubscriptionChanged(e);
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DataChangesCTRL.SubscriptionChanged(e);
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MonitoredItemsCTRL.SubscriptionChanged(e);
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// update subscription status.
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UpdateStatus();
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}
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catch (Exception exception)
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{
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GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
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}
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}
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/// <summary>
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/// Handles a change to the publish status for the subscription.
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/// </summary>
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void Subscription_PublishStatusChanged(object subscription, EventArgs e)
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{
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if (InvokeRequired)
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{
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BeginInvoke(m_PublishStatusChanged, subscription, e);
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return;
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}
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else if (!IsHandleCreated)
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{
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return;
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}
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try
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{
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// ignore notifications for other subscriptions.
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if (!Object.ReferenceEquals(m_subscription, subscription))
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{
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return;
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}
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// notify controls of the change.
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DataChangesCTRL.PublishStatusChanged();
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}
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catch (Exception exception)
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{
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GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
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}
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}
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private void SubscriptionMI_DropDownOpening(object sender, EventArgs e)
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{
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try
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{
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SubscriptionEnablePublishingMI.Checked = m_subscription.CurrentPublishingEnabled;
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}
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catch (Exception exception)
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{
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GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
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}
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}
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private void WindowMI_Click(object sender, EventArgs e)
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{
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try
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{
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if (sender == WindowMonitoredItemsMI)
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{
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WindowMonitoredItemsMI.Checked = !WindowMonitoredItemsMI.Checked;
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WindowEventsMI.Checked = false;
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MonitoredItemsCTRL.Visible = true;
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SplitterPN.Panel1Collapsed = !WindowMonitoredItemsMI.Checked;
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}
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else if (sender == WindowDataChangesMI)
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{
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WindowDataChangesMI.Checked = true;
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WindowEventsMI.Checked = false;
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MonitoredItemsCTRL.Visible = true;
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EventsCTRL.Visible = false;
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DataChangesCTRL.Visible = true;
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Text = String.Format("{0} - {1}", m_subscription.DisplayName, "Data Changes");
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}
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else if (sender == WindowEventsMI)
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{
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WindowDataChangesMI.Checked = false;
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WindowEventsMI.Checked = true;
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MonitoredItemsCTRL.Visible = true;
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EventsCTRL.Visible = true;
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DataChangesCTRL.Visible = false;
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Text = String.Format("{0} - {1}", m_subscription.DisplayName, "Events");
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}
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}
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catch (Exception exception)
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{
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GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
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}
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}
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private void SubscriptionEnablePublishingMI_Click(object sender, EventArgs e)
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{
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try
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{
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m_subscription.SetPublishingMode(SubscriptionEnablePublishingMI.Checked);
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}
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catch (Exception exception)
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{
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GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
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}
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}
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private void SubscriptionDlg_FormClosing(object sender, FormClosingEventArgs e)
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{
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try
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{
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if (m_createDialog != null)
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{
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m_createDialog.Close();
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}
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MonitoredItemsCTRL.FormClosing();
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}
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catch (Exception exception)
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{
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GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
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}
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}
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private void EditMI_Click(object sender, EventArgs e)
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{
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try
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{
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if (!new SubscriptionEditDlg().ShowDialog(m_subscription))
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{
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return;
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}
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m_subscription.Modify();
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}
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catch (Exception exception)
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{
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GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
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}
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}
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private void SubscriptionCreateItemMI_Click(object sender, EventArgs e)
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{
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try
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{
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if (m_createDialog == null)
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{
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m_createDialog = new CreateMonitoredItemsDlg();
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m_createDialog.FormClosing += new FormClosingEventHandler(CreateDialog_FormClosing);
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}
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m_createDialog.Show(m_subscription, false);
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}
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catch (Exception exception)
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{
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GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
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}
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}
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void CreateDialog_FormClosing(object sender, FormClosingEventArgs e)
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{
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try
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{
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if (m_createDialog == sender)
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{
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m_createDialog = null;
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}
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}
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catch (Exception exception)
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{
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GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
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}
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}
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private void SubscriptionCreateItemFromTypeMI_Click(object sender, EventArgs e)
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{
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try
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{
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if (m_createDialog == null)
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{
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m_createDialog = new CreateMonitoredItemsDlg();
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m_createDialog.FormClosing += new FormClosingEventHandler(CreateDialog_FormClosing);
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}
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m_createDialog.Show(m_subscription, true);
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}
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catch (Exception exception)
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{
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GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
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}
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}
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private void ConditionRefreshMI_Click(object sender, EventArgs e)
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{
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try
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{
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m_subscription.ConditionRefresh();
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}
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catch (Exception exception)
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{
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GuiUtils.HandleException(this.Text, MethodBase.GetCurrentMethod(), exception);
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}
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}
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#endregion
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}
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}
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