/// <summary>
/// Function to determine if this node is an ancestor of the parent node.
/// </summary>
/// <param name="parentNode">Parent node to evaluate for ancestry.</param>
/// <returns>TRUE if the child is ancestor of parent, FALSE if not.</returns>
public bool IsAncestorOf(TreeNodeEditor parentNode)
{
TreeNode node = Parent;
// Walk up the chain.
while (node != null)
{
if (node == parentNode)
{
return(true);
}
node = node.Parent;
}
return(false);
}
/// <summary>
/// Function to hide the rename box.
/// </summary>
/// <param name="canceled">TRUE if the edit was canceled, FALSE if not.</param>
public void HideRenameBox(bool canceled)
{
if (_renameBox == null)
{
return;
}
var editNode = _editNode;
_renameBox.KeyDown -= _renameBox_KeyDown;
_renameBox.LostFocus -= _renameBox_LostFocus;
_renameBox.Visible = false;
_editNode = null;
var eventArgs = new NodeLabelEditEventArgs(editNode, canceled ? editNode.Text : _renameBox.Text);
OnAfterLabelEdit(eventArgs);
if (!eventArgs.CancelEdit)
{
editNode.Text = eventArgs.Label;
}
}
/// <summary>
/// Function to show the rename text box.
/// </summary>
/// <param name="node">Node to edit.</param>
public void ShowRenameBox(TreeNodeEditor node)
{
if (node == null)
{
return;
}
if (_renameBox == null)
{
_renameBox = new TextBox
{
Name = Name + "_EditBox",
Visible = false,
BorderStyle = BorderStyle.None,
BackColor = Color.White,
ForeColor = Color.Black,
Height = node.Bounds.Height,
AcceptsTab = false,
Anchor = AnchorStyles.Left | AnchorStyles.Right
};
Controls.Add(_renameBox);
}
// Wipe out the background.
using (var g = CreateGraphics())
{
// Create graphics resources.
if (_selectBrush == null)
{
_selectBrush = new SolidBrush(DarkFormsRenderer.MenuHilightBackground);
}
g.FillRectangle(_selectBrush, new Rectangle(0, node.Bounds.Y, ClientSize.Width, node.Bounds.Height));
}
Point nodePosition = node.Bounds.Location;
nodePosition.X += node.Level * 16 + 24;
nodePosition.Y++;
if (node.CollapsedImage != null)
{
nodePosition.X += node.CollapsedImage.Width + 2;
}
_renameBox.Location = nodePosition;
_renameBox.Width = ClientSize.Width - nodePosition.X;
_renameBox.Text = node.Text;
var editArgs = new NodeLabelEditEventArgs(node, node.Text)
{
CancelEdit = false
};
OnBeforeLabelEdit(editArgs);
if (editArgs.CancelEdit)
{
return;
}
_editNode = node;
_editNode.Redraw();
_renameBox.Visible = true;
_renameBox.Focus();
if (node.Text.Length > 0)
{
_renameBox.Select(0, node.Text.Length);
}
_renameBox.KeyDown += _renameBox_KeyDown;
_renameBox.LostFocus += _renameBox_LostFocus;
}