private void pbHelp_Click(object sender, EventArgs e)
{
if (tvNav.SelectedNode.Tag == null || !(tvNav.SelectedNode.Tag is ActionParent))
{
return;
}
ActionParent ap = (ActionParent)tvNav.SelectedNode.Tag;
SushiHelp.ShowHelpLink(ap.HelpKey);
}
internal static void SetTreeNodeTagToActionParentInstance(TreeNode tn)
{
Type actionType = (Type)tn.Tag;
ActionParent ap = Activator.CreateInstance(actionType) as ActionParent;
System.Reflection.FieldInfo defInstanceField = actionType.GetField("DefInstance");
defInstanceField.SetValue(ap, ap); //singlton design pattern: only one instance ever exists of each of the user controls and it is stored in DefInstance
tn.Tag = ap;
}
private void tvNav_AfterSelect(object sender, TreeViewEventArgs e)
{
try
{
//--This is for "container" nodes so that when user pressess up arrow, the container node is skipped.
if (e.Node.Tag == null && e.Node.Nodes.Count > 0)
{
if (!_lastKeywasUpArrow || e.Node.PrevNode == null)
{
tvNav.SelectedNode = e.Node.Nodes[0];
}
else
{
tvNav.SelectedNode = e.Node.PrevNode.LastNode;
}
return;
}
//--using reflection here for performance reasons, this allows the application to delay-load the Action user control.
if (e.Node.Tag.GetType().FullName == "System.RuntimeType")
{
SetTreeNodeTagToActionParentInstance(e.Node);
}
ActionParent ucp = (ActionParent)e.Node.Tag;
splitContainer1.Panel2.Controls.Clear();
ucp.Dock = DockStyle.Fill;
splitContainer1.Panel2.Controls.Add(ucp);
ucp.ActionFormActivate();
if (ucp.PictureboxImage != null)
{
this.pictureBoxTop.Image = ucp.PictureboxImage;
}
rtbTitle.Text = " " + e.Node.Text;
}
catch (Exception ex)
{
Eh.GlobalErrorHandler(ex);
}
}