CPropTreeItem* CPropTree::InsertItem(CPropTreeItem* pItem, CPropTreeItem* pParent)
{
if (!pItem)
return NULL;
if (!pParent)
pParent = &m_Root;
if (!pParent->GetChild())
pParent->SetChild(pItem);
else
{
// add to end of the sibling list
CPropTreeItem* pNext;
pNext = pParent->GetChild();
while (pNext->GetSibling())
pNext = pNext->GetSibling();
pNext->SetSibling(pItem);
}
pItem->SetParent(pParent);
pItem->SetPropOwner(this);
// auto generate a default ID
pItem->SetCtrlID(m_nLastUID++);
SendNotify(PTN_INSERTITEM, pItem);
UpdatedItems();
return pItem;
}
void CPropTree::Delete(CPropTreeItem* pItem)
{
if (pItem && pItem!=&m_Root && SendNotify(PTN_DELETEITEM, pItem))
return;
// passing in a NULL item is the same as calling DeleteAllItems
if (!pItem)
pItem = &m_Root;
// Clear the visible list before anything gets deleted
ClearVisibleList();
// delete children
CPropTreeItem* pIter;
CPropTreeItem* pNext;
pIter = pItem->GetChild();
while (pIter)
{
pNext = pIter->GetSibling();
DeleteItem(pIter);
pIter = pNext;
}
// unlink from tree
if (pItem->GetParent())
{
if (pItem->GetParent()->GetChild()==pItem)
pItem->GetParent()->SetChild(pItem->GetSibling());
else
{
pIter = pItem->GetParent()->GetChild();
while (pIter->GetSibling() && pIter->GetSibling()!=pItem)
pIter = pIter->GetSibling();
if (pIter->GetSibling())
pIter->SetSibling(pItem->GetSibling());
}
}
if (pItem!=&m_Root)
{
if (pItem==GetFocusedItem())
SetFocusedItem(NULL);
delete pItem;
}
}
void CPropTree::Delete(CPropTreeItem* pItem)
{
if (pItem && pItem!=&m_Root && SendNotify(PTN_DELETEITEM, pItem))
return;
// passing in a NULL item is the same as calling DeleteAllItems
if (!pItem)
pItem = &m_Root;
// delete children
CPropTreeItem* pIter;
CPropTreeItem* pNext;
pIter = pItem->GetChild();
while (pIter)
{
pNext = pIter->GetSibling();
DeleteItem(pIter);
pIter = pNext;
}
// unlink from tree
if (pItem->GetParent())
{
if (pItem->GetParent()->GetChild()==pItem)
{
pItem->GetParent()->SetChild(pItem->GetSibling());
UINT nSiblingID = 0;
CPropTreeItem* pItemID = pItem->GetParent()->GetChild();
while ( pItemID )
{
pItemID->SetSiblingID( nSiblingID++ );
pItemID = pItemID->GetSibling();
}
}
else
{
pIter = pItem->GetParent()->GetChild();
while (pIter->GetSibling() && pIter->GetSibling()!=pItem)
pIter = pIter->GetSibling();
CPropTreeItem* pItemID = pIter->GetSibling();
if ( pItemID )
{
UINT nSiblingID = pItem->GetSiblingID();
while ( pItemID )
{
pItemID = pItemID->GetSibling();
if ( pItemID )
pItemID->SetSiblingID( nSiblingID++ );
}
pIter->SetSibling(pItem->GetSibling());
}
}
}
if (pItem!=&m_Root)
{
if (pItem==GetFocusedItem())
SetFocusedItem(NULL);
delete pItem;
}
}