/// <summary>
/// Builds the tree view. Assumes the list is pre-sorted.
/// </summary>
private void BuildTreeView()
{
// Display a wait cursor while the TreeNodes are being created.
Cursor.Current = Cursors.WaitCursor;
this.treeView1.BeginUpdate();
this.treeView1.Nodes.Clear();
int maxPaths = 20; // Hopefully there are no paths more than 20 deep.
TreeNode lastNode = null;
// Hold the nodes from the previous record.
// We save these so we do not need to search the treeview
TreeNode[] lastNodes = new TreeNode[maxPaths];
string aggSubPath;
string[] paths = new string[maxPaths];
string[] prevPaths = new string[maxPaths];
string[] dataRecords;
if (fileType == CompressedFileType.ArzFile)
{
dataRecords = arzFile.GetKeyTable();
}
else if (fileType == CompressedFileType.ArcFile)
{
dataRecords = arcFile.GetKeyTable();
}
else
{
return;
}
// We failed so return.
if (dataRecords == null)
{
return;
}
foreach (string recordID in dataRecords)
{
// Holds the aggregate path
aggSubPath = string.Empty;
paths.Initialize();
string[] subPaths = recordID.Split('\\');
int count = 0;
foreach (string subPath in subPaths)
{
// We only add if not the last item in the path
// which should be the dbr.
if (count < subPaths.Length - 1)
{
aggSubPath += subPath + '\\';
paths[count] = aggSubPath;
// See if the paths are still the same.
if (paths[count] != prevPaths[count])
{
if (lastNode == null || count == 0)
{
// The very top of the tree.
lastNode = this.treeView1.Nodes.Add(aggSubPath, subPath);
}
else
{
// Add a new node to the previous one in the tree.
lastNode = lastNode.Nodes.Add(aggSubPath, subPath);
}
// Save this guy so we do not need to search.
lastNodes[count] = lastNode;
}
else
{
// Use the previous TreeNode since the strings match.
// This saves the expensive lookup.
lastNode = lastNodes[count];
}
}
else
{
// This is the last thing so we just add it.
aggSubPath += subPath;
// There might not be any sub folders so we add the file to the root
if (lastNode == null || count == 0)
{
// We do not assign last node since we are still at the root.
this.treeView1.Nodes.Add(aggSubPath, subPath);
lastNode = null;
}
else
{
lastNode = lastNode.Nodes.Add(aggSubPath, subPath);
}
// Clear out and save the previous paths.
prevPaths.Initialize();
Array.Copy(paths, prevPaths, paths.Length);
}
count++;
}
}
// Reset the cursor to the default for all controls.
Cursor.Current = Cursors.Default;
this.treeView1.EndUpdate();
}
