private void timer1_Tick(object sender, EventArgs e)
{
timer1.Stop();
TreeNode treeNode = tvwNodes.SelectedNode;
if (DisplayedNode != treeNode)
{
if (treeNode?.Tag is object node)
{
Visualizer visualizer = NodeVisualizer.GetVisualizer(node);
Debug.Assert(visualizer != null);
lblType.Text = node.GetType().Name;
visualizer.PopulateProperties(node, lvwProperties);
txtText.Text = visualizer.LongDescription(node);
}
else
{
lblType.Text = string.Empty;
lvwProperties.Columns.Clear();
lvwProperties.Items.Clear();
txtText.Text = string.Empty;
}
DisplayedNode = treeNode;
}
}
/// <summary>
/// Populates TreeView control with nodes
/// </summary>
/// <param name="nodes"></param>
/// <param name="parent"></param>
public void LoadNodes(HtmlNodeCollection nodes, TreeNode parent)
{
// Populate
foreach (HtmlNode node in nodes)
{
Visualizer visualizer = NodeVisualizer.GetVisualizer(node);
Debug.Assert(visualizer != null);
TreeNode treeNode = parent.Nodes.Add(visualizer.ShortDescription(node));
treeNode.Tag = node;
treeNode.ImageIndex = treeNode.SelectedImageIndex = GetImageIndex(node);
if (node is HtmlElementNode elementNode)
{
LoadNodes(elementNode.Children, treeNode);
}
}
}