private void GetDAItemIDsMI_Click(object sender, System.EventArgs e)
{
try
{
if (typeof(Condition).IsInstanceOfType(BrowseTV.SelectedNode.Tag))
{
OpcClientSdk.Ae.TsCAeBrowseElement source = (OpcClientSdk.Ae.TsCAeBrowseElement)BrowseTV.SelectedNode.Parent.Tag;
Condition condition = (Condition)BrowseTV.SelectedNode.Tag;
new ItemIDsViewDlg().ShowDialog(m_server, source.QualifiedName, condition.Name, null);
}
if (typeof(string).IsInstanceOfType(BrowseTV.SelectedNode.Tag))
{
OpcClientSdk.Ae.TsCAeBrowseElement source = (OpcClientSdk.Ae.TsCAeBrowseElement)BrowseTV.SelectedNode.Parent.Parent.Tag;
Condition condition = (Condition)BrowseTV.SelectedNode.Parent.Tag;
string subcondition = (string)BrowseTV.SelectedNode.Tag;
new ItemIDsViewDlg().ShowDialog(m_server, source.QualifiedName, condition.Name, subcondition);
}
}
catch (Exception exception)
{
MessageBox.Show(exception.Message);
}
}
/// <summary>
/// Gets the current state for the selected condition.
/// </summary>
private void GetConditionStateMI_Click(object sender, System.EventArgs e)
{
try
{
if (typeof(Condition).IsInstanceOfType(BrowseTV.SelectedNode.Tag))
{
Condition condition = (Condition)BrowseTV.SelectedNode.Tag;
OpcClientSdk.Ae.TsCAeBrowseElement source = (OpcClientSdk.Ae.TsCAeBrowseElement)BrowseTV.SelectedNode.Parent.Tag;
new ConditionStateDlg().ShowDialog(m_server, source.QualifiedName, condition.Name);
}
}
catch (Exception exception)
{
MessageBox.Show(exception.Message);
}
}
/// <summary>
/// Populates the tree with the conditions for the source.
/// </summary>
private void BrowseSource(TreeNodeCollection nodes, OpcClientSdk.Ae.TsCAeBrowseElement source)
{
// fetch conditions.
string[] conditions = m_server.QueryConditionNames(source.QualifiedName);
// add conditions to tree.
for (int ii = 0; ii < conditions.Length; ii++)
{
// create node.
TreeNode node = new TreeNode(conditions[ii]);
node.ImageIndex = Resources.IMAGE_EXPLODING_BOX;
node.SelectedImageIndex = Resources.IMAGE_EXPLODING_BOX;
node.Tag = new Condition(conditions[ii]);
// add dummy child to ensure '+' sign is visible.
node.Nodes.Add(new TreeNode());
// add to tree.
nodes.Add(node);
}
}
/// <summary>
/// Fetches the children for the specified node.
/// </summary>
private void FetchChildren(TreeNode node)
{
// check for element.
if (typeof(OpcClientSdk.Ae.TsCAeBrowseElement).IsInstanceOfType(node.Tag))
{
// get the element.
OpcClientSdk.Ae.TsCAeBrowseElement element = (OpcClientSdk.Ae.TsCAeBrowseElement)node.Tag;
node.Nodes.Clear();
// browse area.
if (element.NodeType == OpcClientSdk.Ae.TsCAeBrowseType.Area)
{
BrowseArea(node.Nodes, OpcClientSdk.Ae.TsCAeBrowseType.Area, element);
BrowseArea(node.Nodes, OpcClientSdk.Ae.TsCAeBrowseType.Source, element);
}
// browse source
else
{
BrowseSource(node.Nodes, element);
}
}
// check for category.
else if (typeof(OpcClientSdk.Ae.TsCAeCategory).IsInstanceOfType(node.Tag))
{
node.Nodes.Clear();
BrowseCategory(node.Nodes, (OpcClientSdk.Ae.TsCAeCategory)node.Tag);
}
// check for conditions.
else if (typeof(Condition).IsInstanceOfType(node.Tag))
{
node.Nodes.Clear();
BrowseCondition(node.Nodes, (Condition)node.Tag);
}
}
/// <summary>
/// Enables condition based notifications for the area or source.
/// </summary>
private void SetEnabledStateMI_Click(object sender, System.EventArgs e)
{
try
{
// find current selection.
OpcClientSdk.Ae.TsCAeBrowseElement selection = null;
if (typeof(OpcClientSdk.Ae.TsCAeBrowseElement).IsInstanceOfType(BrowseTV.SelectedNode.Tag))
{
selection = (OpcClientSdk.Ae.TsCAeBrowseElement)BrowseTV.SelectedNode.Tag;
}
else if (!typeof(TsCAeServer).IsInstanceOfType(BrowseTV.SelectedNode.Tag))
{
return;
}
// prompt user.
bool enabled = false;
bool result = new SetEnabledStateDlg().ShowDialog(
m_server,
selection,
out enabled,
ref m_recursive);
if (!result)
{
return;
}
// apply changes.
ArrayList elements = new ArrayList();
if (m_recursive)
{
FindBrowseElements(BrowseTV.SelectedNode, elements);
}
else
{
elements.Add(selection);
}
// seperate into areas and sources.
ArrayList areas = new ArrayList();
ArrayList sources = new ArrayList();
foreach (OpcClientSdk.Ae.TsCAeBrowseElement element in elements)
{
if (element.NodeType == OpcClientSdk.Ae.TsCAeBrowseType.Area)
{
areas.Add(element.QualifiedName);
}
else
{
sources.Add(element.QualifiedName);
}
}
// call server.
if (enabled)
{
m_server.EnableConditionByArea((string[])areas.ToArray(typeof(string)));
m_server.EnableConditionBySource((string[])sources.ToArray(typeof(string)));
}
else
{
m_server.DisableConditionByArea((string[])areas.ToArray(typeof(string)));
m_server.DisableConditionBySource((string[])sources.ToArray(typeof(string)));
}
}
catch (Exception exception)
{
MessageBox.Show(exception.Message);
}
}
/// <summary>
/// Populates the tree with the elements within the specified area.
/// </summary>
private void BrowseArea(TreeNodeCollection nodes, OpcClientSdk.Ae.TsCAeBrowseType browseType, OpcClientSdk.Ae.TsCAeBrowseElement area)
{
IOpcBrowsePosition position = null;
try
{
// fetch first batch of elements.
OpcClientSdk.Ae.TsCAeBrowseElement[] elements = m_server.Browse(
(area != null) ? area.QualifiedName : null,
browseType,
m_browseFilter,
m_maxElements,
out position);
do
{
// add elements to tree.
for (int ii = 0; ii < elements.Length; ii++)
{
// create node.
TreeNode node = new TreeNode(elements[ii].Name);
node.ImageIndex = (browseType == OpcClientSdk.Ae.TsCAeBrowseType.Area)?Resources.IMAGE_CLOSED_BLUE_FOLDER:Resources.IMAGE_GREEN_SCROLL;
node.SelectedImageIndex = (browseType == OpcClientSdk.Ae.TsCAeBrowseType.Area)?Resources.IMAGE_OPEN_BLUE_FOLDER:Resources.IMAGE_GREEN_SCROLL;
node.Tag = elements[ii];
// add dummy child to ensure '+' sign is visible.
node.Nodes.Add(new TreeNode());
// add to tree.
nodes.Add(node);
}
// check if browse is complete.
if (position == null)
{
break;
}
// prompt to continue browse.
DialogResult result = MessageBox.Show(
"More elements meeting search criteria exist. Continue browse?",
"Browse " + browseType + "s",
MessageBoxButtons.YesNo);
if (result == DialogResult.No)
{
break;
}
// continue browse.
elements = m_server.BrowseNext(m_maxElements, ref position);
}while (true);
}
finally
{
// dipose position object on exit.
if (position != null)
{
position.Dispose();
position = null;
}
}
}