/// <summary>
/// Initializes the control with a set of attribute ids.
/// </summary>
public void Initialize(TsCHdaServer server, int[] attributeIDs, TsCHdaResultCollection results)
{
if (server == null)
{
throw new ArgumentNullException("server");
}
mServer_ = server;
itemsLv_.Items.Clear();
// check if there is nothing to do.
if (attributeIDs == null || results == null)
{
return;
}
// collapse the array of collections into indiviual items in the list.
for (int ii = 0; ii < attributeIDs.Length; ii++)
{
if (ii < results.Count)
{
AddListItem(new AttributeResult(results, attributeIDs[ii], results[ii]));
}
}
// adjust the list view columns to fit the data.
AdjustColumns();
}
/// <summary>
/// Displays the values of an attribute.
/// </summary>
public void Initialize(TsCHdaServer server, int attributeIDs, TsCHdaResultCollection results)
{
mServer_ = server;
attributesLv_.Items.Clear();
if (results != null)
{
foreach (TsCHdaResult result in results)
{
AddListItem(result);
}
AdjustColumns();
}
}
/// <summary>
/// Synchronously eads the values from the server.
/// </summary>
private TsCHdaResultCollection[] SyncDelete(TsCHdaItem[] items)
{
// get request parameters from controls.
TrendCTRL.Update(m_trend);
switch (m_type)
{
// synchronous delete raw.
case RequestType.DeleteRaw:
{
OpcItemResult[] results = m_trend.Delete(items);
if (results != null)
{
TsCHdaResultCollection[] collections = new TsCHdaResultCollection[results.Length];
for (int ii = 0; ii < results.Length; ii++)
{
collections[ii] = new TsCHdaResultCollection(results[ii]);
collections[ii].Add(new TsCHdaResult(results[ii]));
}
return(collections);
}
return(null);
}
// synchronous delete at time.
case RequestType.DeleteAtTime:
{
return(m_trend.DeleteAtTime(items));
}
}
return(null);
}
/// <summary>
/// Creates a server handle for the selected item and reads the data.
/// </summary>
private void DoItemRead()
{
// get the attribute ids.
if (m_attributeIDs == null)
{
m_attributeIDs = AttributesCTRL.GetAttributeIDs(true);
return;
}
// create item (if necessary).
TsCHdaItem item = m_trend.Items[m_item];
if (item == null)
{
item = m_trend.AddItem(m_item);
}
// get the paramaters.
TrendCTRL.Update(m_trend);
// get the attributes.
m_attributeIDs = AttributesCTRL.GetAttributeIDs(true);
if (m_synchronous)
{
// read data.
TsCHdaItemAttributeCollection results = m_trend.ReadAttributes(item, m_attributeIDs);
if (results == null || results.Count != m_attributeIDs.Length)
{
////throw new InvalidResponseException();
}
// display results.
ResultsCTRL.Initialize(m_server, results);
// save results.
m_results = results;
}
else
{
// check if already waiting for results.
if (m_asyncSent)
{
return;
}
// begin read data.
TsCHdaResultCollection results = m_trend.ReadAttributes(
item,
m_attributeIDs,
null,
new TsCHdaReadAttributesCompleteEventHandler(OnReadComplete),
out m_request);
if (results == null || results.Count != m_attributeIDs.Length)
{
////throw new InvalidResponseException();
}
// display initial results.
AsyncResultsCTRL.Initialize(m_server, m_attributeIDs, results);
m_asyncSent = true;
}
}
/// <summary>
/// Called when an asynchronous update request completes.
/// </summary>
public void OnUpdateComplete(
int dwTransactionID,
int hrStatus,
int dwCount,
int[] phClients,
int[] phrErrors)
{
try
{
lock (this)
{
// lookup request transaction.
Request request = (Request)m_requests[dwTransactionID];
if (request == null)
{
return;
}
// unmarshal results.
ArrayList results = new ArrayList();
if (dwCount > 0)
{
// subscription results in collections for the same item id.
int currentHandle = phClients[0];
TsCHdaResultCollection itemResults = new TsCHdaResultCollection();
for (int ii = 0; ii < dwCount; ii++)
{
// create a new collection for the next item's results.
if (phClients[ii] != currentHandle)
{
itemResults.ServerHandle = currentHandle;
results.Add(itemResults);
currentHandle = phClients[ii];
itemResults = new TsCHdaResultCollection();
}
TsCHdaResult result = new TsCHdaResult(Technosoftware.DaAeHdaClient.Utilities.Interop.GetResultID(phrErrors[ii]));
itemResults.Add(result);
}
// add the last set of item results.
itemResults.ServerHandle = currentHandle;
results.Add(itemResults);
}
// invoke callback - remove request if all results arrived.
if (request.InvokeCallback((TsCHdaResultCollection[])results.ToArray(typeof(TsCHdaResultCollection))))
{
m_requests.Remove(request.RequestID);
}
}
}
catch (Exception exception)
{
HandleException(dwTransactionID, exception);
}
}
/// <summary>
/// Creates a server handle for the selected item and reads the data.
/// </summary>
private void DoItemRead()
{
// get the attribute ids.
if (mAttributeIDs_ == null)
{
mAttributeIDs_ = attributesCtrl_.GetAttributeIDs(true);
return;
}
// create item (if necessary).
TsCHdaItem item = mTrend_.Items[mItem_];
if (item == null)
{
item = mTrend_.AddItem(mItem_);
}
// get the paramaters.
trendCtrl_.Update(mTrend_);
// get the attributes.
mAttributeIDs_ = attributesCtrl_.GetAttributeIDs(true);
if (mSynchronous_)
{
// read data.
TsCHdaItemAttributeCollection results = mTrend_.ReadAttributes(item, mAttributeIDs_);
if (results == null || results.Count != mAttributeIDs_.Length)
{
////throw new InvalidResponseException();
}
// display results.
resultsCtrl_.Initialize(mServer_, results);
// save results.
mResults_ = results;
}
else
{
// check if already waiting for results.
if (mAsyncSent_)
{
return;
}
// begin read data.
TsCHdaResultCollection results = mTrend_.ReadAttributes(
item,
mAttributeIDs_,
null,
new TsCHdaReadAttributesCompleteEventHandler(OnReadComplete),
out mRequest_);
if (results == null || results.Count != mAttributeIDs_.Length)
{
////throw new InvalidResponseException();
}
// display initial results.
asyncResultsCtrl_.Initialize(mServer_, mAttributeIDs_, results);
mAsyncSent_ = true;
}
}
