NS_IMETHODIMP nsMsgGroupThread::RemoveChildHdr(nsIMsgDBHdr *child, nsIDBChangeAnnouncer *announcer)
{
uint32_t flags;
nsMsgKey key;
if (!child)
return NS_ERROR_NULL_POINTER;
child->GetFlags(&flags);
child->GetMessageKey(&key);
// if this was the newest msg, clear the newest msg date so we'll recalc.
uint32_t date;
child->GetDateInSeconds(&date);
if (date == m_newestMsgDate)
SetNewestMsgDate(0);
if (!(flags & nsMsgMessageFlags::Read))
ChangeUnreadChildCount(-1);
nsMsgViewIndex threadIndex = FindMsgHdr(child);
bool wasFirstChild = threadIndex == 0;
nsresult rv = RemoveChildAt(threadIndex);
// if we're deleting the root of a dummy thread, need to update the threadKey
// and the dummy header at position 0
if (m_dummy && wasFirstChild && m_keys.Length() > 1)
{
nsIMsgDBHdr *newRootChild;
GetChildHdrAt(1, &newRootChild);
SetMsgHdrAt(0, newRootChild);
}
return rv;
}
void UPanelWidget::ClearChildren()
{
int32 Children = GetChildrenCount();
for ( int32 ChildIndex = 0; ChildIndex < Children; ChildIndex++ )
{
RemoveChildAt(0);
}
}
void SDockingArea::DockFromOutside(SDockingNode::RelativeDirection Direction, const FDragDropEvent& DragDropEvent)
{
TSharedPtr<FDockingDragOperation> DragDropOperation = StaticCastSharedPtr<FDockingDragOperation>(DragDropEvent.GetOperation());
//
// Dock from outside.
//
const bool bDirectionMatches = DoesDirectionMatchOrientation( Direction, this->Splitter->GetOrientation() );
if (!bDirectionMatches && Children.Num() > 1)
{
// We have multiple children, but the user wants to add a new node that's perpendicular to their orientation.
// We need to nest our children into a child splitter so that we can re-orient ourselves.
{
// Create a new, re-oriented splitter and copy all the children into it.
TSharedRef<SDockingSplitter> NewSplitter = SNew(SDockingSplitter, FTabManager::NewSplitter()->SetOrientation(Splitter->GetOrientation()) );
for( int32 ChildIndex=0; ChildIndex < Children.Num(); ++ChildIndex )
{
NewSplitter->AddChildNode( Children[ChildIndex], INDEX_NONE );
}
// Remove all our children.
while( Children.Num() > 0 )
{
RemoveChildAt(Children.Num()-1);
}
AddChildNode( NewSplitter );
}
// Re-orient ourselves
const EOrientation NewOrientation = (this->Splitter->GetOrientation() == Orient_Horizontal)
? Orient_Vertical
: Orient_Horizontal;
this->SetOrientation( NewOrientation );
}
// Add the new node.
{
TSharedRef<SDockingTabStack> NewStack = SNew(SDockingTabStack, FTabManager::NewStack());
if ( Direction == LeftOf || Direction == Above )
{
this->PlaceNode( NewStack, Direction, Children[0] );
}
else
{
this->PlaceNode( NewStack, Direction, Children.Last() );
}
NewStack->OpenTab( DragDropOperation->GetTabBeingDragged().ToSharedRef() );
}
HideCross();
}
bool UPanelWidget::RemoveChild(UWidget* Content)
{
int32 ChildIndex = GetChildIndex(Content);
if ( ChildIndex != -1 )
{
return RemoveChildAt(ChildIndex);
}
return false;
}