/// <summary>
/// Return true and set reason to empty string if the given browser
/// node can be edited. Otherwise, return false and set the error
/// reason with the error description. Handles both folder and workspace renaming.
/// </summary>
private bool CanEditTreeNode(KwsBrowserNode node, ref String reason)
{
// Logic statements are separated for clarity's sake.
if (StaleBrowser || node == null)
{
reason = "selected node is invalid";
return false;
}
// Folder nodes.
if (node is KwsBrowserFolderNode &&
((KwsBrowserFolderNode)node).PermanentFlag)
{
reason = "cannot rename the default folder";
return false;
}
// Kws nodes.
if (node is KwsBrowserKwsNode)
{
KwsBrowserKwsNode kws = node as KwsBrowserKwsNode;
if (!m_uiBroker.CanPerformKwsAction(KwsAction.Rename, kws.Kws, ref reason))
{
Debug.Assert(reason != "");
return false;
}
}
reason = "";
return true;
}
/// <summary>
/// Return a TreeNode matching the specified browser node.
/// </summary>
private TreeNode CreateTvWorkspacesTreeNode(KwsBrowserNode bNode)
{
TreeNode tNode = new TreeNode();
tNode.Name = bNode.ID;
tNode.Tag = bNode.FullPath;
UpdateTvWorkspacesTreeNode(tNode, bNode);
return tNode;
}
/// <summary>
/// Return true if this node is a descendant of the node specified.
/// </summary>
public bool IsDescendantOf(KwsBrowserNode folder)
{
if (Parent == null) return false;
if (Parent == folder) return true;
return Parent.IsDescendantOf(folder);
}
/// <summary>
/// Update the tree node information with the browser node specified.
/// </summary>
private void UpdateTvWorkspacesTreeNode(TreeNode tNode, KwsBrowserNode bNode)
{
String text = "";
String imageKey = "";
tNode.NodeFont = new Font(tvWorkspaces.Font, bNode.NotifyFlag ? FontStyle.Bold : FontStyle.Regular);
if (bNode is KwsBrowserFolderNode)
{
KwsBrowserFolderNode folderNode = bNode as KwsBrowserFolderNode;
text = folderNode.FolderName;
imageKey = folderNode.ExpandedFlag ? "FolderOpened" : "FolderClosed";
}
else
{
KwsBrowserKwsNode kwsNode = bNode as KwsBrowserKwsNode;
text = kwsNode.Kws.GetKwsName();
imageKey = kwsNode.GetKwsIconImageKey().Name;
}
// Not sure if this is really necessary for performance; not taking
// chances.
if (tNode.Text != text) tNode.Text = text;
if (tNode.ImageKey != imageKey) tNode.ImageKey = tNode.SelectedImageKey = imageKey;
}
/// <summary>
/// Return true if the index specified is valid for an insert of the
/// node specified.
/// </summary>
public bool IsIndexValidForInsert(KwsBrowserNode node, int index)
{
return (index >= 0 && index <= GetListForNode(node).Count);
}
/// <summary>
/// Remove the node specified.
/// </summary>
public void RemoveNode(KwsBrowserNode node)
{
Debug.Assert(GetContainedNodeIndex(node) != -1);
GetListForNode(node).Remove(node);
node.Parent = null;
}
/// <summary>
/// Return the index of the node specified, or -1 if the node
/// isn't in the folder.
/// </summary>
public int GetContainedNodeIndex(KwsBrowserNode node)
{
ArrayList nodes = GetListForNode(node);
for (int i = 0; i < nodes.Count; i++) if (nodes[i] == node) return i;
return -1;
}
/// <summary>
/// Return the list that could store the node specified.
/// </summary>
public ArrayList GetListForNode(KwsBrowserNode node)
{
if (node is KwsBrowserFolderNode) return FolderNodes;
return KwsNodes;
}
/// <summary>
/// Add the node specified at the position specified.
/// </summary>
public void AddNode(KwsBrowserNode node, int index)
{
Debug.Assert(GetContainedNodeIndex(node) == -1);
Debug.Assert(IsIndexValidForInsert(node, index));
GetListForNode(node).Insert(index, node);
node.Parent = this;
}
/// <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>
/// Move the node at the source specified to the destination specified
/// with the index specified. Throw an exception on error.
/// </summary>
public void Move(KwsBrowserNode srcNode, KwsBrowserFolderNode dstFolder, String dstName, int dstIndex)
{
String MoveCheckRes = MoveCheck(srcNode, dstFolder, dstName, dstIndex);
if (MoveCheckRes != null) throw new Exception(MoveCheckRes);
// Adjust the destination index if we're moving the source node
// to the last index of a different folder than its parent.
if (dstFolder.GetNodeByID(srcNode.ID) == null &&
dstIndex + 1 == dstFolder.KwsNodes.Count)
{
dstIndex++;
}
srcNode.Parent.RemoveNode(srcNode);
if (srcNode is KwsBrowserFolderNode) ((KwsBrowserFolderNode)srcNode).FolderName = dstName;
dstFolder.AddNode(srcNode, dstIndex);
// The workspace list has changed.
m_wm.OutlookBroker.OnKwsListChanged();
}
/// <summary>
/// Return the ID the node specified would have if it had the name
/// specified.
/// </summary>
public String MakeIDForNodeName(KwsBrowserNode node, String name)
{
if (node is KwsBrowserKwsNode) return name;
return "f_" + name;
}
/// <summary>
/// Return true if the folder contains any node that has
/// the NotifyFlag set to true. The method is not recursive.
/// </summary>
private bool ContainsNotifyFlagItems(KwsBrowserNode node)
{
if (node is KwsBrowserKwsNode) return false;
KwsBrowserFolderNode fNode = node as KwsBrowserFolderNode;
foreach (KwsBrowserNode n in fNode.GetNodes())
if (n.NotifyFlag) return true;
return false;
}
