private void btnEdit_Click(object sender, RoutedEventArgs e)
{
ComboTreeNode node = (ComboTreeNode)trvActivities.SelectedItem;
trvActivities.BeginInit();
if (node != null)
{
node.Header = txtActivityName.Text;
}
TextRange range;
range = new TextRange(rtbDescription.Document.ContentStart, rtbDescription.Document.ContentEnd);
if (node.rtbDescriptionMStream != null)
{
node.rtbDescriptionMStream.Position = 0;
range.Save(node.rtbDescriptionMStream, DataFormats.Rtf);
node.rtbDescriptionMStream.Position = 0;
}
GetTreeChanged = true;
isListSaved = false;
m_ActivitiesTreeView = trvActivities.Items.Cast <ComboTreeNode>();
trvActivities.EndInit();
}
private void btnDelete_Click(object sender, RoutedEventArgs e)
{
ComboTreeNode selected_node = (ComboTreeNode)trvActivities.SelectedItem;
if (selected_node != null)
{
if (selected_node.Parent == null) // is a toplevel node
{
int idx = trvActivities.Items.IndexOf(selected_node);
trvActivities.BeginInit();
trvActivities.Items.RemoveAt(idx);
trvActivities.EndInit();
m_ActivitiesTreeView = trvActivities.Items.Cast <ComboTreeNode>();
GetTreeChanged = true;
isListSaved = false;
}
else if (selected_node.Parent.GetType() == typeof(ComboTreeNode))
{
ComboTreeNode Parent = (ComboTreeNode)selected_node.Parent;
int idx = Parent.Items.IndexOf(selected_node);
trvActivities.BeginInit();
Parent.Items.RemoveAt(idx);
trvActivities.EndInit();
m_ActivitiesTreeView = trvActivities.Items.Cast <ComboTreeNode>();
GetTreeChanged = true;
isListSaved = false;
}
}
}
private void BtnAdd_Click(object sender, RoutedEventArgs e)
{
Cursor = Cursors.Wait;
ComboTreeNode selected_node = (ComboTreeNode)trvActivities.SelectedItem;
List <ComboTreeNode> new_tree = Find_and_addNode(m_ActivitiesTreeView, selected_node);
if (selected_node != null)
{
if (trvActivities.ItemsSource != null)
{
trvActivities.BeginInit();
trvActivities.ItemsSource = new_tree;
trvActivities.Items.Refresh();
trvActivities.EndInit();
GetTreeChanged = true;
isListSaved = false;
txtActivityName.Text = "";
}
}
else
{
MessageBox.Show("Must select an item first.", "Select an item", MessageBoxButton.OK, MessageBoxImage.Warning);
}
Cursor = Cursors.Arrow;
}
private List <ComboTreeNode> Find_and_addNode(IEnumerable <ComboTreeNode> iNode, ComboTreeNode selected_node)
{
bool itemfound = false;
bool addToplevelItem = false;
List <ComboTreeNode> new_tree = new List <ComboTreeNode>(iNode);
ComboTreeNode new_item;
if (selected_node == null) // user want to create a new toplevel item
{
new_item = new ComboTreeNode {
};
addToplevelItem = true;
}
else
{
new_item = new ComboTreeNode {
Header = "<new item>", Level = selected_node.Level + 1
};
}
if (addToplevelItem)
{
new_tree.Add(new_item);
}
else
{
foreach (ComboTreeNode n in new_tree)
{
if (itemfound)
{
break;
}
if (n == selected_node)
{
n.Items.Add(new_item);
itemfound = true;
break;
}
foreach (ComboTreeNode i in n.Items)
{
if (i == selected_node)
{
i.Items.Add(new_item);
itemfound = true;
break;
}
}
}
}
return(new_tree);
}
private void trvActivities_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs <object> e)
{
var item = sender as TreeView;
ComboTreeNode selitem = (ComboTreeNode)item.SelectedItem;
if (selitem != null)
{
rtbDescription.IsEnabled = true;
txtActivityName.IsEnabled = true;
btnAddItem.IsEnabled = true;
btnEditItem.IsEnabled = true;
btnDeleteItem.IsEnabled = true;
//mnuAddItem.IsEnabled = true;
//mnuEditItem.IsEnabled = true;
//mnuDeleteItem.IsEnabled = true;
if ((string)selitem.Header == "<new item>")
{
TextRange rtbRange = new TextRange(rtbDescription.Document.ContentStart, rtbDescription.Document.ContentEnd);
rtbRange.Text = "<new description...>";
txtActivityName.Text = (string)selitem.Header;
}
else
{
LoadRTBContent(ref selitem);
txtActivityName.Text = (string)selitem.Header;
}
}
else
{
// no selection
rtbDescription.IsEnabled = false;;
txtActivityName.IsEnabled = false;
btnAddItem.IsEnabled = false;
btnEditItem.IsEnabled = false;
btnDeleteItem.IsEnabled = false;
//mnuAddItem.IsEnabled = false;
//mnuEditItem.IsEnabled = false;
//mnuDeleteItem.IsEnabled = false;
}
}
void LoadRTBContent(ref ComboTreeNode selected_node)
{
TextRange range;
if (selected_node.rtbDescriptionMStream != null)
{
if (selected_node.rtbDescriptionMStream.ToArray().Any())
{
range = new TextRange(rtbDescription.Document.ContentStart, rtbDescription.Document.ContentEnd);
range.Load(selected_node.rtbDescriptionMStream, DataFormats.Rtf);
selected_node.rtbDescriptionMStream.Position = 0;
}
else
{
rtbDescription.Document.Blocks.Clear();
}
}
}
private void PrintRecursive(ComboTreeNode node, ref FileStream fs, string listname)
{
//Print goodies
string node_header_string = (string)node.Header + "|" + listname;
int node_level = node.Level;
//node.Parent;
if (node_header_string != "" || node.rtbDescriptionMStream.ToArray().Any())
{
byte[] data = FormatByteArray(node.rtbDescriptionMStream.GetBuffer(), node_header_string, node_level);
fs.Write(data, 0, data.Length);
}
//loop through the tree of activities
foreach (ComboTreeNode tn in node.Items)
{
PrintRecursive(tn, ref fs, listname);
}
}
private List <ComboTreeNode> Load_ChurchActivities_From_File(string filePath, Stream fstream)
{
List <ComboTreeNode> tree_array = new List <ComboTreeNode>()
{
};
try
{
if (File.Exists($"{filePath}"))
{
// STX = byte 0x02
// ETX = byte 0x03
//message = [STX(1byte) + header_byte_array (n bytes) + escape_seq (2 bytes)+payload + ETX(1byte)]
byte[] read_buffer = new byte[1024];
byte[] tmp_buf = new byte[1024];
byte[] ETX_seq = new byte[2] {
0x03, 0x30
};
byte[] STX_seq = new byte[2] {
0x02, 0x20
};
byte[] escape_seq = new byte[2] {
0x0A, 0xA0
};
int node_level_length = 1;
//byte[] tmp_array = new byte[STX_seq.Length + node_level_length + header_byte_array.Length + escape_seq.Length + payload.Length + ETX_seq.Length];
int STXidx = 0;
int ETXidx = 0;
int offset_size = 0;
int idx = 0;
int bytes_read = 0;
string node_header;
int node_level = 0;
int payload_length = 0;
ComboTreeNode node;
MemoryStream payload_data;
while ((bytes_read = fstream.Read(read_buffer, offset_size, read_buffer.Length - offset_size)) > 0)
{
//loop over read buffer
for (idx = 0; idx <= read_buffer.Length - 1; idx++)
{
// read untill get a STX
if (read_buffer[idx] == 0x02 && read_buffer[idx + 1] == 0x20)
{
STXidx = idx; //STXidx is the beginning of the STX sequence index in the read buffer array
}
// read until you get an ETX symbol
if (read_buffer[idx] == 0x03 && read_buffer[idx + 1] == 0x30)
{
ETXidx = idx + 1; //ETXidx is the end of the ETX sequence index in the read buffer array and at the end of 1 message
}
// if an STX and ETX is found decode the the data and find the next message (STX ETX)
if (read_buffer[STXidx] == (byte)ArrayFormat.STX && read_buffer[ETXidx] == 0x30)
{
//we found the beginning of the payload
for (int i = STXidx; i <= ETXidx - 2; i++)
{
if (read_buffer[i] == 0x0A && read_buffer[i + 1] == 0xA0)
{
int header_size = (i - 1) - (STXidx + 1 + node_level_length);
node_level = Convert.ToInt16(read_buffer[STXidx + 2]);
node_header = Encoding.UTF8.GetString(read_buffer, STXidx + 3 /*beggining offset of node header*/, header_size);
string[] ary_nodeHeader = node_header.Split('|');
string activityName = ary_nodeHeader[0];
string listname = ary_nodeHeader[1];
node = new ComboTreeNode {
Header = activityName, Level = node_level, activityList = listname
};
if (read_buffer[i + 2] == (byte)ArrayFormat.ETX)
{
payload_length = 0;
payload_data = new MemoryStream();
node.rtbDescriptionMStream = payload_data;
}
else
{
payload_data = new MemoryStream();
payload_length = (ETXidx - 2) - (i + 2);
payload_data.Write(read_buffer, i + 2, payload_length);
node.rtbDescriptionMStream = payload_data;
//string data = Encoding.UTF8.GetString(payload_data.GetBuffer(),0,payload_length);
}
tree_array.Add(node);
break;
}
}
STXidx = ETXidx + 1;
ETXidx = 0;
}
else if (idx == read_buffer.Length - 1 && ETXidx == 0) //we read until the end of the buffer but cannot find an end of message sequence ETX
{
// if this is the last byte in the buffer and we have not found an ETX symbol
//calc new size of offset into read_buffer where the new data will go
offset_size = (read_buffer.Length - 1) - STXidx;
Buffer.BlockCopy(read_buffer, STXidx, tmp_buf, 0, offset_size);
//clear the read_buffer
for (int i = 0; i <= read_buffer.Length - 1; i++)
{
read_buffer[i] = 0;
}
//copy the bytes from tmp_buffer back to the read_buffer at the 0 index in read buffer
Buffer.BlockCopy(tmp_buf, 0, read_buffer, 0, offset_size);
//clear the tmp_buffer
for (int i = 0; i <= read_buffer.Length - 1; i++)
{
tmp_buf[i] = 0;
}
}
}
} // while readbytes
}
//else // activities file does not exist
//{
// Cursor = Cursors.Arrow;
// MessageBox.Show("No Activities file found or file is in the wrong format! '*.xml'");
//}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString(), "XML read error", MessageBoxButton.OK, MessageBoxImage.Error);
}
return(tree_array);
}
// variable that hold tree of headers read from XML file
// private List<ActivityHeader> m_lstHeadersFromXML = new List<ActivityHeader>() { };
public void InitTree(List <ComboTreeNode> tree)
{
ComboTreeNode parent_ptr = null;
ComboTreeNode root_ptr = null;
ComboTreeNode child_ptr = null;
List <ComboTreeNode> tmp_tree = new List <ComboTreeNode>()
{
};
// tree is already initialized
//if (trvActivities.DataContext == null)
//{
// trvActivities.DataContext = tree;
//}
//return;
for (int i = 0; i <= tree.Count - 1; i++)
{
if (tree[i].Level == 0)
{
if (root_ptr != null)
{
tmp_tree.Add(root_ptr);
}
root_ptr = tree[i];
}
/* This node is a child of the root node pointed to by root_ptr */
else if (tree[i].Level == root_ptr.Level + 1)
{
if (tree[i].Parent == null)
{
root_ptr.Items.Add(tree[i]);
}
parent_ptr = tree[i];
}
/* This node is a child of a parent node pointed to by parent_ptr */
else if (tree[i].Level == parent_ptr.Level + 1)
{
if (tree[i].Parent == null)
{
parent_ptr.Items.Add(tree[i]);
}
child_ptr = tree[i];
}
/* This node is a child of a child node pointed to by child_ptr
* parent_ptr becomes the node
*/
else if (tree[i].Level == child_ptr.Level + 1)
{
if (tree[i].Parent == null)
{
child_ptr.Items.Add(tree[i]);
}
parent_ptr = tree[i];
}
}
if (!tmp_tree.Contains(root_ptr))
{
tmp_tree.Add(root_ptr);
}
trvActivities.ItemsSource = tmp_tree;
m_ActivitiesTreeView = trvActivities.ItemsSource.Cast <ComboTreeNode>();
}
