/// <summary>
/// Sends a server or item pciked depending on the node.
/// </summary>
private void PickNode(TreeNode node)
{
if (IsServerNode(node))
{
if (ServerPicked != null)
{
ServerPicked((TsCDaServer)node.Tag);
}
}
else if (IsBrowseElementNode(node))
{
TsCDaBrowseElement element = (TsCDaBrowseElement)node.Tag;
if (element.IsItem && ItemPicked != null)
{
ItemPicked(new OpcItem(element.ItemPath, element.ItemName));
}
}
else if (IsItemPropertyNode(node))
{
TsCDaItemProperty property = (TsCDaItemProperty)node.Tag;
if (property.ItemName != null && ItemPicked != null)
{
ItemPicked(new OpcItem(property.ItemPath, property.ItemName));
}
}
}
/// <summary>
/// Unmarshals and deallocates a OPCBROWSEELEMENT structures.
/// </summary>
internal static TsCDaBrowseElement GetBrowseElement(IntPtr pInput, bool deallocate)
{
TsCDaBrowseElement output = null;
if (pInput != IntPtr.Zero)
{
OpcRcw.Da.OPCBROWSEELEMENT element = (OpcRcw.Da.OPCBROWSEELEMENT)Marshal.PtrToStructure(pInput, typeof(OpcRcw.Da.OPCBROWSEELEMENT));
output = new TsCDaBrowseElement();
output.Name = element.szName;
output.ItemPath = null;
output.ItemName = element.szItemID;
output.IsItem = ((element.dwFlagValue & OpcRcw.Da.Constants.OPC_BROWSE_ISITEM) != 0);
output.HasChildren = ((element.dwFlagValue & OpcRcw.Da.Constants.OPC_BROWSE_HASCHILDREN) != 0);
output.Properties = GetItemProperties(ref element.ItemProperties, deallocate);
if (deallocate)
{
Marshal.DestroyStructure(pInput, typeof(OpcRcw.Da.OPCBROWSEELEMENT));
}
}
return(output);
}
/// <summary>
/// Adds the specified browse element into the tree.
/// </summary>
private void AddBrowseElement(TreeNode parent, TsCDaBrowseElement element)
{
// create the new node.
TreeNode node = new TreeNode(element.Name);
// select the icon.
if (element.IsItem)
{
node.ImageIndex = node.SelectedImageIndex = Resources.IMAGE_GREEN_SCROLL;
}
else
{
node.ImageIndex = node.SelectedImageIndex = Resources.IMAGE_CLOSED_YELLOW_FOLDER;
}
node.Tag = element;
// add a dummy node to force display of '+' symbol.
if (element.HasChildren)
{
node.Nodes.Add(new TreeNode());
}
// add properties
if (element.Properties != null)
{
foreach (TsCDaItemProperty property in element.Properties)
{
AddItemProperty(node, property);
}
}
// add to parent.
parent.Nodes.Add(node);
}
/// <summary>
/// Unmarshals and deallocates an array of OPCBROWSEELEMENT structures.
/// </summary>
internal static TsCDaBrowseElement[] GetBrowseElements(ref IntPtr pInput, int count, bool deallocate)
{
TsCDaBrowseElement[] output = null;
if (pInput != IntPtr.Zero && count > 0)
{
output = new TsCDaBrowseElement[count];
IntPtr pos = pInput;
for (int ii = 0; ii < count; ii++)
{
output[ii] = GetBrowseElement(pos, deallocate);
pos = (IntPtr)(pos.ToInt64() + Marshal.SizeOf(typeof(OpcRcw.Da.OPCBROWSEELEMENT)));
}
if (deallocate)
{
Marshal.FreeCoTaskMem(pInput);
pInput = IntPtr.Zero;
}
}
return(output);
}
public OpcDaTag(TsCDaBrowseElement element)
{
if (element.IsItem)
{
ElementName = element.ItemName;
Path = element.ItemPath;
var access = GetProperty(element, TsDaProperty.ACCESSRIGHTS).Value;
if (Enum.IsDefined(typeof(TsDaAccessRights), access))
{
AccessRights = (TsDaAccessRights)Enum.Parse(typeof(TsDaAccessRights), access.ToString(), true);
}
else
{
throw new InvalidCastException(string.Format(
"Невозможно приветсти {0} к типу TsDaAccessRights", access.ToString()));
}
ScanRate = Convert.ToSingle(GetProperty(element, TsDaProperty.SCANRATE).Value);
TypeNameOfValue = ((Type)GetProperty(element, TsDaProperty.DATATYPE).Value).FullName;
}
else
{
throw new InvalidCastException("Невозможно создать тег на основе элемента типа группа");
}
}
/// <summary>
/// Browses for children of the element at the current node.
/// </summary>
private void GetProperties(TreeNode node)
{
try
{
// get the server for the current node.
TsCDaServer server = FindServer(node);
// get the current element to use for a get properties.
TsCDaBrowseElement element = null;
if (node.Tag != null && node.Tag.GetType() == typeof(TsCDaBrowseElement))
{
element = (TsCDaBrowseElement)node.Tag;
}
// can only get properties for an item.
if (!element.IsItem)
{
return;
}
// clear the node children.
node.Nodes.Clear();
// begin a browse.
OpcItem itemID = new OpcItem(element.ItemPath, element.ItemName);
TsCDaItemPropertyCollection[] propertyLists = server.GetProperties(
new OpcItem[] { itemID },
m_filters.PropertyIDs,
m_filters.ReturnPropertyValues);
if (propertyLists != null)
{
foreach (TsCDaItemPropertyCollection propertyList in propertyLists)
{
foreach (TsCDaItemProperty property in propertyList)
{
AddItemProperty(node, property);
}
// update element properties.
element.Properties = (TsCDaItemProperty[])propertyList.ToArray(typeof(TsCDaItemProperty));
}
}
node.Expand();
// send notification that property list changed.
if (ElementSelected != null)
{
ElementSelected(element);
}
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
}
public OpcTechnosoftwareTagValueBaseViewModel(TsCDaBrowseElement tag)
{
if (!tag.IsItem)
{
throw new ArgumentException("Элемент не является тегом", "tag");
}
Tag = tag;
}
/// <summary>
/// Initializes the object from a browse element.
/// </summary>
private bool Init(TsCDaBrowseElement element)
{
// update the item id.
ItemPath = element.ItemPath;
ItemName = element.ItemName;
Name = element.Name;
return(Init(element.Properties));
}
public OpcTechnosoftWriteTagsViewModel(TsCDaServer server, TsCDaBrowseElement[] tags)
{
Title = "Запись тегов";
_opcDaServer = server;
_tags = tags.Select(x => OpcTechnosoftwareTagValueBaseViewModel.Create(x))
.Where(y => y.Accessibility == TsDaAccessRights.ReadWritable ||
y.Accessibility == TsDaAccessRights.Writable)
.ToArray();
WriteTagsCommand = new RelayCommand(OnWriteTags, CanWriteTags);
}
/// <summary>
/// Returns the complex item for the specified item browse element.
/// </summary>
/// <param name="element">The item browse element.</param>
public static TsCCpxComplexItem GetComplexItem(TsCDaBrowseElement element)
{
if (element == null)
{
return(null);
}
lock (typeof(TsCCpxComplexTypeCache))
{
return(GetComplexItem(new OpcItem(element.ItemPath, element.ItemName)));
}
}
public TsOpcElement(TsOpcTagsStructure owner,
TsCDaBrowseElement element)
{
if (owner == null)
{
throw new ArgumentNullException("owner");
}
if (element == null)
{
throw new ArgumentNullException("element");
}
_owner = owner;
_element = element;
}
public static OpcTechnosoftwareTagValueBaseViewModel Create(TsCDaBrowseElement tag)
{
var property = tag.Properties.First(x => x.ID == TsDaProperty.DATATYPE);
if ((Type)property.Value == typeof(Boolean))
{
return new OpcTechnosoftwareTagValueBoolViewModel(tag);
}
else
{
throw new NotSupportedException(
string.Format("Неудалось создать объект. Таг с типом данных {0} не поддерживается",
property.Value.ToString()));
}
throw new NotImplementedException();
}
/// <summary>
/// Called when the browse filters have changed.
/// </summary>
private void OnBrowseFiltersChanged(TsCDaBrowseFilters filters)
{
m_filters = filters;
if (IsBrowseElementNode(BrowseTV.SelectedNode))
{
TsCDaBrowseElement element = (TsCDaBrowseElement)BrowseTV.SelectedNode.Tag;
if (!element.HasChildren)
{
GetProperties(BrowseTV.SelectedNode);
return;
}
}
Browse(BrowseTV.SelectedNode);
}
/// <summary>
/// Initializes the control with a set of identified results.
/// </summary>
public void Initialize(TsCDaBrowseElement element)
{
propertiesLv_.Items.Clear();
// check if there is nothing to do.
if (element == null || element.Properties == null)
{
return;
}
mElement_ = element;
foreach (TsCDaItemProperty property in element.Properties)
{
AddProperty(property);
}
// adjust the list view columns to fit the data.
AdjustColumns();
}
/// <summary>
/// Allocates and marshals an OPCBROWSEELEMENT structure.
/// </summary>
internal static OpcRcw.Da.OPCBROWSEELEMENT GetBrowseElement(TsCDaBrowseElement input, bool propertiesRequested)
{
OpcRcw.Da.OPCBROWSEELEMENT output = new OpcRcw.Da.OPCBROWSEELEMENT();
if (input != null)
{
output.szName = input.Name;
output.szItemID = input.ItemName;
output.dwFlagValue = 0;
output.ItemProperties = GetItemProperties(input.Properties);
if (input.IsItem)
{
output.dwFlagValue |= OpcRcw.Da.Constants.OPC_BROWSE_ISITEM;
}
if (input.HasChildren)
{
output.dwFlagValue |= OpcRcw.Da.Constants.OPC_BROWSE_HASCHILDREN;
}
}
return(output);
}
/// <summary>
/// Called when a server is picked in the browse control.
/// </summary>
private void OnElementSelected(TsCDaBrowseElement element)
{
PropertiesCTRL.Initialize(element);
}
/// <summary>
/// Создаёт на основе указанного объетка, OpcDaTag или OpcDaGroup
/// </summary>
/// <param name="element"></param>
/// <returns></returns>
public static OpcDaElement Create(TsCDaBrowseElement element)
{
if (element.IsItem)
{
return new OpcDaTag(element);
}
else
{
return new OpcDaGroup { Path = element.ItemPath, ElementName = element.ItemName };
}
}
protected static TsCDaItemProperty GetProperty(TsCDaBrowseElement element, TsDaPropertyID propertyId)
{
return element.Properties.FirstOrDefault(x => x.ID == propertyId);
}
/// <summary>
/// Called when a server is picked in the browse control.
/// </summary>
private void OnElementSelected(TsCDaBrowseElement element)
{
propertiesCtrl_.Initialize(element);
}
/// <summary>
/// Browses for children of the element at the current node.
/// </summary>
private void Browse(TreeNode node)
{
try
{
// get the server for the current node.
TsCDaServer server = FindServer(node);
// get the current element to use for a browse.
TsCDaBrowseElement parent = null;
OpcItem itemID = null;
if (node.Tag != null && node.Tag.GetType() == typeof(TsCDaBrowseElement))
{
parent = (TsCDaBrowseElement)node.Tag;
itemID = new OpcItem(parent.ItemPath, parent.ItemName);
}
// clear the node children.
node.Nodes.Clear();
// add properties
if (parent != null && parent.Properties != null)
{
foreach (TsCDaItemProperty property in parent.Properties)
{
AddItemProperty(node, property);
}
}
// begin a browse.
OpcClientSdk.Da.TsCDaBrowsePosition position = null;
TsCDaBrowseElement[] elements = server.Browse(itemID, m_filters, out position);
// add children.
if (elements != null)
{
foreach (TsCDaBrowseElement element in elements)
{
AddBrowseElement(node, element);
}
node.Expand();
}
// loop until all elements have been fetched.
while (position != null)
{
DialogResult result = MessageBox.Show(
"More items meeting search criteria exist. Continue browse?",
"Browse Items",
MessageBoxButtons.YesNo);
if (result == DialogResult.No)
{
break;
}
// fetch next batch of elements,.
elements = server.BrowseNext(ref position);
// add children.
if (elements != null)
{
foreach (TsCDaBrowseElement element in elements)
{
AddBrowseElement(node, element);
}
node.Expand();
}
}
// send notification that property list changed.
if (ElementSelected != null)
{
if (node.Tag.GetType() == typeof(TsCDaBrowseElement))
{
ElementSelected((TsCDaBrowseElement)node.Tag);
}
else
{
ElementSelected(null);
}
}
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
}
internal OpcTechnosoftwareTagValueBoolViewModel(TsCDaBrowseElement tag) : base(tag) { }
string[] GetSegmentsOfPath(TsCDaBrowseElement element)
{
var result = element.ItemPath.Split(new string[] { SPLITTER }, StringSplitOptions.RemoveEmptyEntries);
return result;
}
public TsOpcTagsStructure(TsCDaBrowseElement[] elements)
{
var list = elements.Select(x => new TsOpcElement(this, x));
_allItems = new List<TsOpcElement>(list);
}
