| ynaAddChildFirst: AddNode := FOwner.AddChildFirst(Destination);
ynaInsert: AddNode := FOwner.Insert(Destination);
end;
FUpLeft := AddNode.FUpLeft;
FUpRight := AddNode.FUpRight;
FDownRight := AddNode.FDownRight;
if FUpLeft <> nil then FUpLeft.FDownLeft := Self;
if FUpRight <> nil then FUpRight.FDownRight := Self;
if FDownRight <> nil then FDownRight.FUpRight := Self;
AddNode.Free;
end;
procedure TYuNode.Delete;
begin
if not FDeleting then
begin
FIsRootOfDeleted := True;
Free;
end;
end;
procedure TYuNode.CutFromTree;
begin
if Self = FOwner.FFirstNode then
begin
FOwner.FFirstNode := GetNextBrother;
if FOwner.FFirstNode <> nil then
FOwner.FFirstNode.FUpRight := nil;
Exit;
end;
if FDownRight <> nil then //有下一个兄弟
if FUpRight <> nil then //有上一个兄弟
begin
FUpRight.FDownRight := FDownRight;
FDownRight.FUpRight := FUpRight;
end
else //直接指向父结点
begin
FUpLeft.FDownLeft := FDownRight;
FDownRight.FUpRight := nil;
FDownRight.FUpLeft := FUpLeft;
end
else
if FUpRight <> nil then //有上一个兄弟
FUpRight.FDownRight := nil
else //直接指向父结点
FUpLeft.FDownLeft := nil;
end;
{ TYuTree }
function TYuTree.Add(Brother: TYuNode): TYuNode;
var
Node: TYuNode;
begin
if Brother = nil then
if FFirstNode = nil then
begin
Result := TYuNode.Create(Self);
FFirstNode := Result;
Exit;
end
else
Brother := FFirstNode;
Node := Brother.GetLastBrother;
Result := TYuNode.Create(Self);
Node.FDownRight := Result;
Result.FUpRight := Node;
上一页 [1] [2] [3] [4] [5] [6] [7] [8] [9] 下一页 | 
