mirror of
https://github.com/OPCFoundation/UA-.NETStandard.git
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351 lines
13 KiB
C#
351 lines
13 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.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 MonitoredItemDlg : Form
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{
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#region Constructors
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public MonitoredItemDlg()
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{
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InitializeComponent();
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this.Icon = ClientUtils.GetAppIcon();
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m_SubscriptionStateChanged = new SubscriptionStateChangedEventHandler(Subscription_StateChanged);
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m_MonitoredItemNotification = new MonitoredItemNotificationEventHandler(MonitoredItem_Notification);
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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 MonitoredItem m_monitoredItem;
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private SubscriptionStateChangedEventHandler m_SubscriptionStateChanged;
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private MonitoredItemNotificationEventHandler m_MonitoredItemNotification;
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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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/// Displays the dialog.
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/// </summary>
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public void Show(MonitoredItem monitoredItem)
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{
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if (monitoredItem == null) throw new ArgumentNullException("monitoredItem");
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Show();
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BringToFront();
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// remove previous subscription.
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if (m_monitoredItem != null)
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{
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monitoredItem.Subscription.StateChanged -= m_SubscriptionStateChanged;
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monitoredItem.Subscription.PublishStatusChanged -= m_PublishStatusChanged;
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monitoredItem.Notification -= m_MonitoredItemNotification;
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}
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// start receiving notifications from the new subscription.
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m_monitoredItem = monitoredItem;
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m_subscription = null;
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if (m_monitoredItem != null)
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{
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m_subscription = monitoredItem.Subscription;
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m_monitoredItem.Subscription.StateChanged += m_SubscriptionStateChanged;
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m_monitoredItem.Subscription.PublishStatusChanged += m_PublishStatusChanged;
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m_monitoredItem.Notification += m_MonitoredItemNotification;
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}
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WindowMI_Click(WindowStatusMI, null);
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WindowMI_Click(WindowLatestValueMI, null);
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MonitoredItemsCTRL.Initialize(m_monitoredItem);
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EventsCTRL.Initialize(m_subscription, m_monitoredItem);
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DataChangesCTRL.Initialize(m_subscription, m_monitoredItem);
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LatestValueCTRL.ShowValue(m_monitoredItem, false);
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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 lastMessage = null;
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if (m_monitoredItem != null)
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{
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lastMessage = m_monitoredItem.LastMessage;
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}
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MonitoringModeTB.Text = String.Empty;
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MonitoringModeTB.ForeColor = Color.Empty;
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MonitoringModeTB.Font = new Font(MonitoringModeTB.Font, FontStyle.Regular);
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if (m_monitoredItem != null)
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{
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MonitoringModeTB.Text = String.Format("{0}", m_monitoredItem.Status.MonitoringMode);
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}
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if (m_subscription != null && m_subscription.PublishingStopped)
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{
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MonitoringModeTB.Text = String.Format("BadNoCommunication");
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MonitoringModeTB.ForeColor = Color.Red;
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MonitoringModeTB.Font = new Font(MonitoringModeTB.Font, FontStyle.Bold);
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}
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LastUpdateTimeTB.Text = String.Empty;
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LastMessageIdTB.Text = String.Empty;
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if (lastMessage != null)
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{
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LastUpdateTimeTB.Text = String.Format("{0:HH:mm:ss}", lastMessage.PublishTime.ToLocalTime());
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LastMessageIdTB.Text = String.Format("{0}", lastMessage.SequenceNumber);
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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 MonitoredItem_Notification(MonitoredItem monitoredItem, MonitoredItemNotificationEventArgs e)
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{
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if (InvokeRequired)
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{
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BeginInvoke(m_MonitoredItemNotification, monitoredItem, 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 monitored items.
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if (!Object.ReferenceEquals(m_monitoredItem, monitoredItem))
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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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if (e != null)
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{
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MonitoredItemNotification notification = e.NotificationValue as MonitoredItemNotification;
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LatestValueCTRL.ShowValue(notification, true);
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}
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// update item 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 (m_monitoredItem == null || !Object.ReferenceEquals(m_monitoredItem.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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// update item 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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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 == WindowStatusMI)
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{
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WindowStatusMI.Checked = !WindowStatusMI.Checked;
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WindowLatestValueMI.Checked = false;
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MonitoredItemsCTRL.Visible = true;
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SplitterPN.Panel1Collapsed = !WindowStatusMI.Checked;
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}
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else if (sender == WindowHistoryMI)
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{
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WindowHistoryMI.Checked = true;
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WindowLatestValueMI.Checked = false;
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MonitoredItemsCTRL.Visible = true;
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EventsCTRL.Visible = m_monitoredItem.NodeClass != NodeClass.Variable;
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DataChangesCTRL.Visible = !EventsCTRL.Visible;
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LatestValueCTRL.Visible = false;
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Text = String.Format("{0} - {1} - {2}", m_subscription.DisplayName, m_monitoredItem.DisplayName, "Recent Values");
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}
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else if (sender == WindowLatestValueMI)
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{
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WindowHistoryMI.Checked = false;
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WindowLatestValueMI.Checked = true;
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MonitoredItemsCTRL.Visible = true;
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EventsCTRL.Visible = false;
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DataChangesCTRL.Visible = false;
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LatestValueCTRL.Visible = true;
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Text = String.Format("{0} - {1} - {2}", m_subscription.DisplayName, m_monitoredItem.DisplayName, "Latest Value");
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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 MonitoringModeMI_Click(object sender, EventArgs e)
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{
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try
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{
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MonitoringMode monitoringMode = m_monitoredItem.MonitoringMode;
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if (sender == MonitoringModeReportingMI)
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{
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monitoringMode = MonitoringMode.Reporting;
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}
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else if (sender == MonitoringModeSamplingMI)
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{
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monitoringMode = MonitoringMode.Sampling;
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}
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else if (sender == MonitoringModeDisabledMI)
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{
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monitoringMode = MonitoringMode.Disabled;
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}
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m_monitoredItem.Subscription.SetMonitoringMode(monitoringMode, new MonitoredItem[] { m_monitoredItem });
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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 MonitoringModeMI_DropDownOpening(object sender, EventArgs e)
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{
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try
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{
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MonitoringModeReportingMI.Checked = false;
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MonitoringModeSamplingMI.Checked = false;
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MonitoringModeDisabledMI.Checked = false;
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switch (m_monitoredItem.MonitoringMode)
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{
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case MonitoringMode.Reporting: { MonitoringModeReportingMI.Checked = true; break; }
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case MonitoringMode.Sampling: { MonitoringModeSamplingMI.Checked = true; break; }
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case MonitoringMode.Disabled: { MonitoringModeDisabledMI.Checked = true; break; }
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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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#endregion
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}
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}
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