private static string ReturnDisplayString(SubjectNodes ThisNode)
{
string DisplayString = "";
string LeadingString = ThisNode.LeadingChars;
string ChildIndicator = ThisNode.CI;
string NodeText = ThisNode.TitleText;
DisplayString = LeadingString + ChildIndicator + NodeText;
return(DisplayString);
}
/// <summary>
/// This method creates the List of display strings for the ListView
/// as well as a dictionary of Subject nodes whose
/// </summary>
/// <param name="ThisNode"></param>
/// <returns></returns>
public static List <string> ResetDisplayList(string ThisNodesLevelName)
{
// Clear the existing List
DisplayList.Clear();
// Clear the SubjectNodesLevelNameList
SubjectNodesLevelNameList.Clear();
DisplayList.Add("Root");
SubjectNodesLevelNameList.Add("*");
// Increment thru ThisNodesLevelName getting the parents' and the node's display string
for (int i = 1; i < ThisNodesLevelName.Length; i++)
{
string CurrentNodeLevelName = ThisNodesLevelName.Substring(0, i + 1);
SubjectNodes CurrentNode = SubjectNodeDictionary[CurrentNodeLevelName];
string ThisNodesDisplayString = ReturnDisplayString(CurrentNode);
DisplayList.Add(ThisNodesDisplayString);
SubjectNodesLevelNameList.Add(CurrentNodeLevelName);
}
// Cycle through SubjectNodeDictionary looking for all nodes whose NodeLevelName
// Get the length of ThisNodesLevelName
int L = ThisNodesLevelName.Length;
// begins witn ThisNodesLevelName and whose length is 1 greater that that of ThisNodesLevelName
foreach (KeyValuePair <string, SubjectNodes> KVP in SubjectNodeDictionary)
{
string Key = KVP.Key;
SubjectNodes ThisNode = SubjectNodeDictionary[Key];
if ((Key.IndexOf(ThisNodesLevelName) == 0))
{
if (ThisNode.NodeLevelName.Length == L + 1)
{
string ThisDisplaystring = ReturnDisplayString(ThisNode);
DisplayList.Add(ThisDisplaystring);
string ThisNodeLevelName = ThisNode.NodeLevelName;
SubjectNodesLevelNameList.Add(ThisNodeLevelName);
}
}
}
return(DisplayList);
}// End ResetDisplayList method
/// <summary>
/// This method receives the path to the main holding folder
/// for a particular subject and opens add of the
/// reqired data files to populate the ListView display
/// of Subjects. The Name of the main holding folder
/// is the display name of the Subects as well
/// as of the .txt file that holds the display data
/// </summary>
/// <param name="HomeFolderPat"></param>
public static void OpenFiles(string HomeFolderPath)
{
// Get the name of the subject from the last item in the path
// Get the number of '\\'s in FolderPath
int NumberOfSlashes = StringHelper.ReturnNumberOfDeliniters(HomeFolderPath, '\\');
// Get the Subjects Name from the item a position NumberOfSlashes -1
var FolderName = StringHelper.ReturnItemAtPos(HomeFolderPath, '\\', NumberOfSlashes - 1);
//Use the FolderName to name the Subject, and its main data files
string SubjectName = FolderName;
// Create path to this subjects data file
var SubjectsDataFile = HomeFolderPath + SubjectName + ".txt";
string SubjectDataFilePath = SubjectsDataFile;
// Test to see if this file exist and if not create it
if (!File.Exists(SubjectsDataFile))
{
/* This is a newly created subject so initialize the ItemCounter to 0,
* create the string [] array, ArrayOfSubjectNodes to hold all of the subject nodes,
* Create the Root node and set its counter to ItemCounter and update ItemCounter
*/
//// create the initial count and write it to the ItemCount.bin file
//int CurrentItemCount = 0;
////Create a binary file to hold the current number of items created
//ItemsCountFilePath = HomeFolderPath + "\\ItemCount.bin";
//FileStream fs = new FileStream(ItemsCountFilePath, FileMode.Create);
//BinaryWriter bw = new BinaryWriter(fs);
//Create a new RootNode
SubjectNodes RootNode = new SubjectNodes(ItemCount);
// Assign the CurrentItemCount to the Root node's ID
RootNode.ID = ItemCount;
ItemCount++;
////increment the current count and write it to the ItemsCount.bin file
//CurrentItemCount++;
//bw.Write(CurrentItemCount);
//bw.Close();
RootNode.CI = "- ";
RootNode.NodeLevelName = "*";
int LengthNodeLevelName = RootNode.NodeLevelName.Length;
string LeadingChars = new string(' ', LengthNodeLevelName);
RootNode.LeadingChars = LeadingChars;
RootNode.NOC = 0;
RootNode.TitleText = "Root";
RootNode.HasData = false;
//Add this rootnode to the SubjectNodeDictionary
AddNodeToDictionary(RootNode);
////SubjectNodeDictionary.Add(RootNode.NodeLevelName, RootNode);
// Create the DisplayString for the root node
string RootDisplayString = $"{RootNode.LeadingChars}{RootNode.CI}{RootNode.TitleText}";
//Add this root node to the DisplayList
DisplayList.Add(RootDisplayString);
// Add the root Node's NodeLevelName to the DisplaySubjectNodesList
SubjectNodesLevelNameList.Add(RootNode.NodeLevelName);
}
else
{
// read in the SubjectsDataFile
} // End if else file subject file exists
} //End OpenFiles method
public static void AddNodeToDictionary(SubjectNodes ThisNode)
{
SubjectNodeDictionary.Add(ThisNode.NodeLevelName, ThisNode);
}