Samuele Locatelli
290 lines
10 KiB
C#
290 lines
10 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.Windows.Forms;
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using System.Text;
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using Opc.Ua;
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using Opc.Ua.Client;
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namespace Opc.Ua.Client.Controls
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{
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/// <summary>
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/// Prompts the user to edit a value.
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/// </summary>
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public partial class EditReadValueIdDlg : Form
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{
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#region Constructors
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/// <summary>
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/// Creates an empty form.
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/// </summary>
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public EditReadValueIdDlg()
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{
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InitializeComponent();
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this.Icon = ClientUtils.GetAppIcon();
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// add the attributes in numerical order.
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foreach (uint attributeId in Attributes.GetIdentifiers())
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{
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AttributeCB.Items.Add(Attributes.GetBrowseName(attributeId));
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}
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}
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#endregion
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#region EncodingInfo Class
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/// <summary>
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/// Stores information about a data encoding.
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/// </summary>
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private class EncodingInfo
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{
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public QualifiedName EncodingName;
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public override string ToString()
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{
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if (EncodingName != null)
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{
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return EncodingName.ToString();
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}
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return "Not Set";
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}
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}
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#endregion
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#region Private Fields
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#endregion
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#region Public Interface
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/// <summary>
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/// Prompts the user to edit the read request parameters for the set of nodes provided.
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/// </summary>
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public ReadValueId[] ShowDialog(Session session, params ReadValueId[] nodesToRead)
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{
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NodeBTN.Session = session;
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NodeBTN.SelectedReference = null;
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bool editNode = true;
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bool editAttribute = true;
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bool editIndexRange = true;
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bool editDataEncoding = true;
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// populate the controls.
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if (nodesToRead != null && nodesToRead.Length > 0)
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{
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bool nonValueAttribute = false;
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for (int ii = 0; ii < nodesToRead.Length; ii++)
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{
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if (nodesToRead[ii] == null)
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{
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continue;
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}
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// only show the node if all have the same node id.
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if (editNode)
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{
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if (NodeBTN.SelectedNode != null && nodesToRead[ii].NodeId != NodeBTN.SelectedNode)
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{
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NodeTB.Visible = false;
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NodeLB.Visible = false;
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NodeBTN.Visible = false;
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editNode = false;
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}
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else
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{
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NodeBTN.SelectedNode = nodesToRead[ii].NodeId;
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}
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}
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// only show the attribute if all have the same attribute id.
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if (editAttribute)
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{
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// check if any non-value attributes are present.
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if (nodesToRead[ii].AttributeId != Attributes.Value)
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{
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nonValueAttribute = true;
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}
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int index = (int)nodesToRead[ii].AttributeId - 1;
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if (AttributeCB.SelectedIndex != -1 && index != AttributeCB.SelectedIndex)
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{
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AttributeCB.Visible = false;
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AttributeLB.Visible = false;
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editAttribute = false;
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}
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else
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{
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AttributeCB.SelectedIndex = index;
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}
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}
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}
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DataEncodingCB.Items.Clear();
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editIndexRange = !nonValueAttribute;
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IndexRangeLB.Visible = editIndexRange;
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IndexRangeTB.Visible = editIndexRange;
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if (!nonValueAttribute)
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{
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// use the index range for the first node as template.
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IndexRangeTB.Text = nodesToRead[0].IndexRange;
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// fetch the available encodings for the first node in the list from the server.
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IVariableBase variable = session.NodeCache.Find(nodesToRead[0].NodeId) as IVariableBase;
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if (variable != null)
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{
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if (session.NodeCache.IsTypeOf(variable.DataType, Opc.Ua.DataTypeIds.Structure))
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{
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DataEncodingCB.Items.Add(new EncodingInfo());
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DataEncodingCB.SelectedIndex = 0;
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foreach (INode encoding in session.NodeCache.Find(variable.DataType, Opc.Ua.ReferenceTypeIds.HasEncoding, false, true))
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{
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DataEncodingCB.Items.Add(new EncodingInfo() { EncodingName = encoding.BrowseName });
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if (nodesToRead[0].DataEncoding == encoding.BrowseName)
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{
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DataEncodingCB.SelectedIndex = DataEncodingCB.Items.Count - 1;
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}
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}
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}
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}
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}
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// hide the data encodings if none to select.
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if (DataEncodingCB.Items.Count == 0)
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{
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DataEncodingCB.Visible = false;
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DataEncodingLB.Visible = false;
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editDataEncoding = false;
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}
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}
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if (!editNode && !editAttribute && !editIndexRange && !editDataEncoding)
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{
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throw new ArgumentException("nodesToRead", "It is not possible to edit the current selection as a group.");
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}
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if (base.ShowDialog() != DialogResult.OK)
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{
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return null;
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}
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// create the list of results.
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ReadValueId[] results = null;
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if (nodesToRead == null || nodesToRead.Length == 0)
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{
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results = new ReadValueId[1];
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}
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else
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{
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results = new ReadValueId[nodesToRead.Length];
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}
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// copy the controls into the results.
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for (int ii = 0; ii < results.Length; ii++)
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{
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// preserve the existing settings if they are not being changed.
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if (nodesToRead != null && nodesToRead.Length > 0)
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{
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results[ii] = (ReadValueId)nodesToRead[ii].MemberwiseClone();
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}
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else
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{
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results[ii] = new ReadValueId();
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}
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// only copy results that were actually being edited.
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if (editNode)
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{
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results[ii].NodeId = NodeBTN.SelectedNode;
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}
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if (editAttribute)
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{
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results[ii].AttributeId = (uint)(AttributeCB.SelectedIndex + 1);
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}
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if (editIndexRange)
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{
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results[ii].ParsedIndexRange = NumericRange.Parse(IndexRangeTB.Text);
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if (NumericRange.Empty != results[ii].ParsedIndexRange)
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{
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results[ii].IndexRange = results[ii].ParsedIndexRange.ToString();
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}
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else
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{
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results[ii].IndexRange = String.Empty;
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}
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}
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if (editDataEncoding)
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{
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results[ii].DataEncoding = null;
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EncodingInfo encoding = DataEncodingCB.SelectedItem as EncodingInfo;
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if (encoding != null)
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{
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results[ii].DataEncoding = encoding.EncodingName;
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}
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}
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}
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return results;
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}
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#endregion
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#region Event Handlers
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private void OkBTN_Click(object sender, EventArgs e)
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{
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try
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{
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if (IndexRangeTB.Visible)
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{
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NumericRange.Parse(IndexRangeTB.Text);
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}
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DialogResult = DialogResult.OK;
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}
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catch (Exception exception)
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{
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ClientUtils.HandleException(this.Text, 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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