Samuele Locatelli
418 lines
14 KiB
C#
418 lines
14 KiB
C#
/* ========================================================================
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* Copyright (c) 2005-2020 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.Text;
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using System.Windows.Forms;
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namespace Opc.Ua.Client.Controls
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{
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/// <summary>
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/// Displays a list of attributes and their values.
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/// </summary>
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public partial class AttributeListCtrl : Opc.Ua.Client.Controls.BaseListCtrl
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{
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/// <summary>
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/// Initializes a new instance of the <see cref="AttributeListCtrl"/> class.
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/// </summary>
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public AttributeListCtrl()
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{
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InitializeComponent();
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SetColumns(m_ColumnNames);
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}
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#region Private Fields
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private Session m_session;
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// The columns to display in the control.
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private readonly object[][] m_ColumnNames = new object[][]
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{
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new object[] { "Name", HorizontalAlignment.Left, null },
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new object[] { "Value", HorizontalAlignment.Left, null }
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};
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private class ItemInfo
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{
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public NodeId NodeId;
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public uint AttributeId;
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public string Name;
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public DataValue Value;
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}
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#endregion
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/// <summary>
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/// Initializes the control with a set of items.
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/// </summary>
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public void Initialize(Session session, ExpandedNodeId nodeId)
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{
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ItemsLV.Items.Clear();
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m_session = session;
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if (m_session == null)
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{
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return;
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}
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ILocalNode node = m_session.NodeCache.Find(nodeId) as ILocalNode;
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if (node == null)
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{
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return;
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}
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uint[] attributesIds = Attributes.GetIdentifiers();
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for (int ii = 0; ii < attributesIds.Length; ii++)
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{
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uint attributesId = attributesIds[ii];
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if (!node.SupportsAttribute(attributesId))
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{
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continue;
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}
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ItemInfo info = new ItemInfo();
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info.NodeId = node.NodeId;
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info.AttributeId = attributesId;
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info.Name = Attributes.GetBrowseName(attributesId);
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info.Value = new DataValue(StatusCodes.BadWaitingForInitialData);
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ServiceResult result = node.Read(null, attributesId, info.Value);
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if (ServiceResult.IsBad(result))
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{
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info.Value = new DataValue(result.StatusCode);
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}
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AddItem(info);
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}
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IList<IReference> references = node.References.Find(ReferenceTypes.HasProperty, false, true, m_session.TypeTree);
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for (int ii = 0; ii < references.Count; ii++)
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{
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IReference reference = references[ii];
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ILocalNode property = m_session.NodeCache.Find(reference.TargetId) as ILocalNode;
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if (property == null)
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{
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return;
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}
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ItemInfo info = new ItemInfo();
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info.NodeId = property.NodeId;
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info.AttributeId = Attributes.Value;
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info.Name = Utils.Format("{0}", property.DisplayName);
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info.Value = new DataValue(StatusCodes.BadWaitingForInitialData);
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ServiceResult result = property.Read(null, Attributes.Value, info.Value);
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if (ServiceResult.IsBad(result))
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{
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info.Value = new DataValue(result.StatusCode);
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}
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AddItem(info);
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}
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UpdateValues();
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}
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/// <summary>
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/// Updates the values from the server.
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/// </summary>
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private void UpdateValues()
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{
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ReadValueIdCollection valuesToRead = new ReadValueIdCollection();
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foreach (ListViewItem item in ItemsLV.Items)
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{
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ItemInfo info = item.Tag as ItemInfo;
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if (info == null)
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{
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continue;
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}
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ReadValueId valueToRead = new ReadValueId();
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valueToRead.NodeId = info.NodeId;
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valueToRead.AttributeId = info.AttributeId;
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valueToRead.Handle = item;
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valuesToRead.Add(valueToRead);
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}
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DataValueCollection results;
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DiagnosticInfoCollection diagnosticInfos;
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m_session.Read(
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null,
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0,
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TimestampsToReturn.Neither,
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valuesToRead,
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out results,
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out diagnosticInfos);
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ClientBase.ValidateResponse(results, valuesToRead);
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ClientBase.ValidateDiagnosticInfos(diagnosticInfos, valuesToRead);
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for (int ii = 0; ii < valuesToRead.Count; ii++)
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{
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ListViewItem item = (ListViewItem)valuesToRead[ii].Handle;
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ItemInfo info = (ItemInfo)item.Tag;
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info.Value = results[ii];
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UpdateItem(item, info);
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}
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AdjustColumns();
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}
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/// <summary>
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/// Formats the value of an attribute.
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/// </summary>
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private string FormatAttributeValue(uint attributeId, object value)
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{
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switch (attributeId)
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{
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case Attributes.NodeClass:
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{
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if (value != null)
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{
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return String.Format("{0}", Enum.ToObject(typeof(NodeClass), value));
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}
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return "(null)";
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}
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case Attributes.DataType:
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{
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NodeId datatypeId = value as NodeId;
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if (datatypeId != null)
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{
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INode datatype = m_session.NodeCache.Find(datatypeId);
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if (datatype != null)
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{
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return String.Format("{0}", datatype.DisplayName.Text);
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}
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else
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{
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return String.Format("{0}", datatypeId);
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}
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}
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return String.Format("{0}", value);
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}
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case Attributes.ValueRank:
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{
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int? valueRank = value as int?;
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if (valueRank != null)
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{
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switch (valueRank.Value)
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{
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case ValueRanks.Scalar: return "Scalar";
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case ValueRanks.OneDimension: return "OneDimension";
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case ValueRanks.OneOrMoreDimensions: return "OneOrMoreDimensions";
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case ValueRanks.Any: return "Any";
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default:
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{
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return String.Format("{0}", valueRank.Value);
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}
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}
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}
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return String.Format("{0}", value);
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}
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case Attributes.MinimumSamplingInterval:
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{
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double? minimumSamplingInterval = value as double?;
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if (minimumSamplingInterval != null)
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{
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if (minimumSamplingInterval.Value == MinimumSamplingIntervals.Indeterminate)
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{
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return "Indeterminate";
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}
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else if (minimumSamplingInterval.Value == MinimumSamplingIntervals.Continuous)
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{
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return "Continuous";
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}
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return String.Format("{0}", minimumSamplingInterval.Value);
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}
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return String.Format("{0}", value);
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}
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case Attributes.AccessLevel:
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case Attributes.UserAccessLevel:
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{
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byte accessLevel = Convert.ToByte(value);
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StringBuilder bits = new StringBuilder();
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if ((accessLevel & AccessLevels.CurrentRead) != 0)
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{
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bits.Append("Readable");
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}
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if ((accessLevel & AccessLevels.CurrentWrite) != 0)
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{
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if (bits.Length > 0)
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{
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bits.Append(" | ");
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}
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bits.Append("Writeable");
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}
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if ((accessLevel & AccessLevels.HistoryRead) != 0)
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{
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if (bits.Length > 0)
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{
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bits.Append(" | ");
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}
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bits.Append("History Read");
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}
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if ((accessLevel & AccessLevels.HistoryWrite) != 0)
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{
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if (bits.Length > 0)
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{
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bits.Append(" | ");
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}
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bits.Append("History Update");
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}
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if (bits.Length == 0)
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{
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bits.Append("No Access");
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}
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return String.Format("{0}", bits);
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}
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case Attributes.EventNotifier:
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{
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byte notifier = Convert.ToByte(value);
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StringBuilder bits = new StringBuilder();
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if ((notifier & EventNotifiers.SubscribeToEvents) != 0)
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{
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bits.Append("Subscribe");
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}
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if ((notifier & EventNotifiers.HistoryRead) != 0)
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{
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if (bits.Length > 0)
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{
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bits.Append(" | ");
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}
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bits.Append("History");
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}
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if ((notifier & EventNotifiers.HistoryWrite) != 0)
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{
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if (bits.Length > 0)
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{
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bits.Append(" | ");
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}
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bits.Append("History Update");
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}
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if (bits.Length == 0)
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{
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bits.Append("No Access");
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}
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return String.Format("{0}", bits);
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}
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default:
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{
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return String.Format("{0}", value);
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}
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}
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}
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#region Overridden Methods
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/// <see cref="Opc.Ua.Client.Controls.BaseListCtrl.UpdateItem(ListViewItem,object)" />
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protected override void UpdateItem(ListViewItem listItem, object item)
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{
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ItemInfo info = item as ItemInfo;
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if (info == null)
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{
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base.UpdateItem(listItem, item);
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return;
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}
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listItem.SubItems[0].Text = Utils.Format("{0}", info.Name);
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if (StatusCode.IsBad(info.Value.StatusCode))
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{
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listItem.SubItems[1].Text = Utils.Format("{0}", info.Value.StatusCode);
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}
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else
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{
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listItem.SubItems[1].Text = FormatAttributeValue(info.AttributeId, info.Value.Value);
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}
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if (info.AttributeId != Attributes.Value)
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{
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listItem.ImageKey = GuiUtils.Icons.Attribute;
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}
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else
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{
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listItem.ImageKey = GuiUtils.Icons.Property;
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}
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listItem.Tag = info;
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}
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#endregion
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}
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}
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