private TreeNode MakeNode( XmlNode xNode )
{
TreeNode tNode = new TreeNode();
if ( xNode.Name == "child" )
{
// This is a simple child node
Loc loc = new Loc( xNode );
tNode.Text = loc.Name;
// Put location as tag
tNode.Tag = loc;
}
else
{
// This is a parent node
tNode.Text = xNode.Attributes["name"].Value;
foreach ( XmlNode xChild in xNode.ChildNodes )
tNode.Nodes.Add( MakeNode( xChild ) );
}
return tNode;
}
private void ButtonAdd_Click(object sender, System.EventArgs e)
{
string name = Input.Text;
if ( name.Length == 0 )
{
Status.Text = "The name for the new item cannot be empty";
return;
}
TreeNode pNode = TreeCat.SelectedNode;
if ( pNode == null )
{
if ( TreeCat.Nodes.Count == 0 )
{
// Empty tree, add the first item
Loc nLoc = new Loc( name );
TreeNode nNode = new TreeNode( name );
Facet = name;
nNode.Tag = nLoc;
TreeCat.Nodes.Add( nNode );
TreeCat.SelectedNode = nNode;
IsModified = true;
return;
}
Status.Text = "Please select a category first";
return;
}
if ( pNode.Tag is Loc )
{
if ( ((Loc)pNode.Tag).IsDefined )
{
Status.Text = "You can't add sub-items to a location. Please choose a category instead.";
return;
}
}
// Check for duplicates
if ( IsDuplicate( pNode, name, true ) )
{
Status.Text = "An item named " + name + " already exists in the category " + pNode.Text;
return;
}
// Ok we're adding a child. First set parent tag to null
pNode.Tag = null;
Loc NewLoc = new Loc( name );
TreeNode NewNode = new TreeNode( name );
NewNode.Tag = NewLoc;
pNode.Nodes.Add( NewNode );
TreeCat.SelectedNode = NewNode;
if ( ( pNode.Nodes.Count > 1 ) && ( pNode.Parent != null ) )
TreeCat.SelectedNode = pNode;
IsModified = true;
}