/// <summary>
/// Initializes the next stage of browsing.
/// </summary>
private void NextStage()
{
ComDaClientManager system = (ComDaClientManager)this.SystemContext.SystemHandle;
ComDaClient client = system.SelectClient((ServerSystemContext)SystemContext, false);
// determine which stage is next based on the reference types requested.
for (Stage next = m_stage + 1; next <= Stage.Done; next++)
{
if (next == Stage.Children)
{
if (IsRequired(ReferenceTypeIds.Organizes, false))
{
m_stage = next;
break;
}
}
else if (next == Stage.Properties)
{
if (IsRequired(ReferenceTypeIds.HasProperty, false))
{
m_stage = next;
break;
}
}
else if (next == Stage.Parents)
{
if (IsRequired(ReferenceTypeIds.Organizes, true))
{
m_stage = next;
break;
}
}
else if (next == Stage.Done)
{
m_stage = next;
break;
}
}
m_position = 0;
// start enumerating branches.
if (m_stage == Stage.Children)
{
m_browser = client.CreateBrowser(m_itemId);
return;
}
// start enumerating properties.
if (m_stage == Stage.Properties)
{
m_properties = client.ReadAvailableProperties(m_itemId, true);
m_position = 0;
return;
}
// start enumerating parents.
if (m_stage == Stage.Parents)
{
m_parentId = client.FindElementParentId(m_itemId);
return;
}
// all done.
}
