/// <summary>
/// add node to tree view control
/// </summary>
/// <param name="type">indicate operation type</param>
/// <param name="info">tree node text</param>
private void AddNode(OperationType type, string info)
{
//add tree node according to operation type
if (type == OperationType.StartTransactionGroup)
{
if (m_transGroupNode == null)
{
m_transGroupNode = new TreeNode(m_transactionGroup.GetName());
int index = m_rootNode.Nodes.Add(m_transGroupNode);
m_rootNode.Nodes[index].Tag = m_transactionGroup;
m_rootNode.Expand();
UpdateTreeNode(m_transGroupNode, type);
}
else
{
TreeNode newTransGroupNode = new TreeNode(m_transactionGroup.GetName());
int index = m_transGroupNode.Nodes.Add(newTransGroupNode);
m_transGroupNode.Nodes[index].Tag = m_transactionGroup;
m_transGroupNode.Expand();
m_transGroupNode = newTransGroupNode;
m_transGroupNode.Expand();
UpdateTreeNode(m_transGroupNode, type);
}
m_transNode = null;
m_transaction = null;
}
else if (type == OperationType.RollbackTransactionGroup)
{
UpdateTreeNode(m_transGroupNode, type);
if (m_transGroupNode.Parent.Equals(m_rootNode))
{
m_rootNode.Expand();
m_transactionGroup = null;
m_transGroupNode = null;
}
else
{
m_transGroupNode = m_transGroupNode.Parent;
m_transGroupNode.Expand();
m_transactionGroup = m_transGroupNode.Tag as TransactionGroup;
}
m_transNode = null;
m_transaction = null;
}
else if (type == OperationType.CommitTransactionGroup)
{
UpdateTreeNode(m_transGroupNode, type);
if (m_transGroupNode.Parent.Equals(m_rootNode))
{
m_rootNode.Expand();
m_transactionGroup = null;
m_transGroupNode = null;
}
else
{
m_transGroupNode.Expand();
m_transGroupNode = m_transGroupNode.Parent;
m_transactionGroup = m_transGroupNode.Tag as TransactionGroup;
}
m_transNode = null;
m_transaction = null;
}
else if (type == OperationType.StartTransaction)
{
m_transNode = new TreeNode(m_transaction.GetName());
m_transNode.ForeColor = m_startedColor;
TreeNode node = m_transGroupNode == null ? m_rootNode : m_transGroupNode;
node.Nodes.Add(m_transNode);
node.Expand();
UpdateTreeNode(m_transNode, type);
}
else if (type == OperationType.CommitTransaction)
{
UpdateTreeNode(m_transNode, type);
TreeNode node = m_transGroupNode == null ? m_rootNode : m_transGroupNode;
node.Expand();
m_transNode = null;
}
else if (type == OperationType.RollbackTransaction)
{
UpdateTreeNode(m_transNode, type);
TreeNode node = m_transGroupNode == null ? m_rootNode : m_transGroupNode;
node.Expand();
m_transNode = null;
}
else
{
string childNodeText = null;
if (String.IsNullOrEmpty(info))
{
childNodeText = "Operation";
}
else
{
childNodeText = info;
}
TreeNode childNode = new TreeNode(childNodeText);
if (type == OperationType.ObjectDeletion)
{
childNode.ForeColor = m_deletedColor;
}
else
{
childNode.ForeColor = m_normalColor;
}
m_transNode.Nodes.Add(childNode);
m_transNode.Expand();
}
}
