/// <summary>
/// Check if the specified move is valid. If the move is valid, a null
/// string is returned, otherwise a string describing the problem is
/// returned.
/// </summary>
public String MoveCheck(KwsBrowserNode srcNode, KwsBrowserFolderNode dstFolder, String dstName, int dstIndex)
{
String dstID = MakeIDForNodeName(srcNode, dstName);
if ((srcNode is KwsBrowserFolderNode) && ((KwsBrowserFolderNode)srcNode).PermanentFlag)
return "cannot move or rename this folder";
if (srcNode is KwsBrowserKwsNode && dstFolder.IsRoot())
return "workspaces must be in folders";
if (srcNode is KwsBrowserKwsNode && dstID != srcNode.ID)
return "cannot change workspace ID";
if (srcNode is KwsBrowserFolderNode && !KwsBrowserFolderNode.IsValidFolderName(dstName))
return "invalid destination name";
if (srcNode == dstFolder || dstFolder.IsDescendantOf(srcNode)) return "invalid move";
bool reindexFlag = (dstFolder.GetNodeByID(dstID) == srcNode);
if (!reindexFlag && dstFolder.GetNodeByID(dstID) != null)
return "destination already exists";
if (!dstFolder.IsIndexValidForInsert(srcNode, dstIndex))
return "invalid destination index";
return null;
}
/// <summary>
/// Add a workspace at the end of the folder specified. Throw an
/// exception on error.
/// </summary>
public KwsBrowserKwsNode AddKws(Workspace kws, KwsBrowserFolderNode dstFolder, bool firstFlag)
{
if (m_kwsTree.ContainsKey(kws.InternalID)) throw new Exception(Base.GetKwsString() + "already exist");
if (dstFolder.IsRoot()) throw new Exception(Base.GetKwsString() + " must be in folders");
KwsBrowserKwsNode node = new KwsBrowserKwsNode(kws);
dstFolder.AddNode(node, firstFlag ? 0 : dstFolder.KwsNodes.Count);
m_kwsTree[kws.InternalID] = node;
return node;
}
