LRESULT MFTreeView::OnItemExpanding(int /*idCtrl*/, LPNMHDR pnmh, BOOL& /*bHandled*/)
{
bool result = true; // TRUE == Dont Expand/collapse
LPNMTREEVIEW pnmtv = (LPNMTREEVIEW)pnmh;
MFTreeViewItem* pItem = (MFTreeViewItem*)(pnmtv->itemNew.lParam);
if (pItem)
{
if (pnmtv->action == TVE_COLLAPSE)
{
// TODO: Make this a recursive algorithm incase we have open subnodes.
WTL::CTreeItem item(pnmtv->itemNew.hItem, this);
WTL::CTreeItem child = item.GetChild();
while (!child.IsNull())
{
MFTreeViewItem* pChild = (MFTreeViewItem*)child.GetData();
child.SetData(NULL);
if (pChild)
{
delete pChild;
}
child = GetNextSiblingItem(child);
}
SendMessage(m_hWnd, TVM_EXPAND, TVE_COLLAPSE | TVE_COLLAPSERESET, (LPARAM) pnmtv->itemNew.hItem);
result = false;
}
else if (pnmtv->action == TVE_EXPAND && pItem->HasChildren())
{
HTREEITEM hPrevItem = pnmtv->itemNew.hItem;
std::vector<MFTreeViewItem*> children = pItem->GetChildren();
for (unsigned int i = 0; i < children.size(); ++i)
{
TVINSERTSTRUCT tvis = { 0 };
tvis.hParent = pnmtv->itemNew.hItem;
tvis.hInsertAfter = pItem->SortChildren() ? TVI_SORT : hPrevItem;
tvis.item.mask = TVIF_CHILDREN | TVIF_PARAM | TVIF_TEXT;
tvis.item.pszText = LPSTR_TEXTCALLBACK;
//tvis.item.iImage = nImage;
//tvis.item.iSelectedImage = nSelectedImage;
//tvis.item.state = nState;
//tvis.item.stateMask = nStateMask;
tvis.item.cChildren = I_CHILDRENCALLBACK;
tvis.item.lParam = (LPARAM) children[i];
hPrevItem = InsertItem(&tvis);
}
result = false;
}
}
return result ? TRUE : FALSE;
}
LRESULT MFTreeView::OnRClick(int /*idCtrl*/, LPNMHDR pnmh, BOOL& bHandled)
{
HMENU ctxMenu = CreatePopupMenu();
WTL::CTreeItem item = GetDropHilightItem();
if (item.IsNull())
{
item = GetSelectedItem();
}
MFTreeViewItem* pItem = (MFTreeViewItem*)item.GetData();
if (pItem == NULL)
{
DestroyMenu(ctxMenu);
return 0;
}
unsigned int nextID = pItem->AppendMenuCmd(ctxMenu, 1, item);
if (GetMenuItemCount(ctxMenu) > 0)
{
AppendMenu(ctxMenu, MF_SEPARATOR, 0, NULL);
}
unsigned int refreshID = nextID++;
nextID = AppendMenu(ctxMenu, MF_STRING, refreshID, _T("Refresh"));
if (GetMenuItemCount(ctxMenu) == 0)
{
DestroyMenu(ctxMenu);
return 0;
}
POINT pos;
GetCursorPos(&pos);
int command = TrackPopupMenuEx(ctxMenu, TPM_NONOTIFY | TPM_RETURNCMD, pos.x, pos.y, pnmh->hwndFrom, NULL);
if (!pItem->HandleMenuCmd(command, item))
{
if (command == refreshID)
{
WTL::CTreeItem parent = item.GetParent();
parent.Expand(TVE_COLLAPSE | TVE_COLLAPSERESET);
parent.Expand();
}
}
DestroyMenu(ctxMenu);
return 1;
}
LRESULT MFTreeView::OnKeydown(int idCtrl, LPNMHDR pnmh, BOOL& bHandled) {
int x = 9;
TV_KEYDOWN* pTVKeyDown = (TV_KEYDOWN*)pnmh;
if (pTVKeyDown->wVKey == VK_F2) {
WTL::CTreeItem item = GetDropHilightItem();
if (item.IsNull()) {
item = GetSelectedItem();
}
MFTreeViewItem* pItem = (MFTreeViewItem*)item.GetData();
if (pItem == NULL)
return 0;
pItem->HandleMenuCmd(4 /*CMD_RENAME*/, item);
}
return 0;
}