public ContextMenu BuildContextMenu(TreeNode tn, NodeDef n)
{
ContextMenu cm = new ContextMenu();
bool first = true;
// Populate from this node's popup collection.
if (n.PopupItems.Count != 0)
{
foreach (Popup popup in n.PopupItems)
{
NodeMenuItem nmi = new NodeMenuItem(popup.Text, tn, n, null, popup);
if (popup.PopupItems.Count == 0)
{
nmi.Click += new EventHandler(OnContextItem);
nmi.Enabled = ((NodeInstance)tn.Tag).Instance.IsEnabled(popup.Tag, popup.Enabled);
}
BuildChildPopups(nmi, popup, tn, n, null);
cm.MenuItems.Add(nmi);
}
first = false;
}
// For each child node, populate from the child's ParentPopupItems collection.
foreach (NodeDef child in n.Nodes)
{
NodeDef refNode = child;
// Resolve any referenced node.
if (child.IsRef)
{
if (!nodeList.ContainsKey(child.RefName))
{
throw new ApplicationException("referenced node does not exist.");
}
refNode = nodeList[child.RefName];
}
if (refNode.ParentPopupItems.Count != 0)
{
if (!first)
{
if (child.Separator)
{
cm.MenuItems.Add(new NodeMenuItem("-", tn, n, null, null));
}
}
first = false;
// Populate the items.
foreach (Popup popup in refNode.ParentPopupItems)
{
NodeMenuItem nmi = new NodeMenuItem(popup.Text, tn, n, refNode, popup);
if (popup.PopupItems.Count == 0)
{
nmi.Click += new EventHandler(OnContextItem);
nmi.Enabled = ((NodeInstance)tn.Tag).Instance.IsEnabled(popup.Tag, popup.Enabled);
}
BuildChildPopups(nmi, popup, tn, n, refNode);
cm.MenuItems.Add(nmi);
//NodeMenuItem nmi = new NodeMenuItem(popup.Text, tn, n, refNode, popup);
//nmi.Click += new EventHandler(OnContextItem);
//nmi.Enabled = ((NodeInstance)tn.Tag).Instance.IsEnabled(popup.Tag, popup.Enabled);
//cm.MenuItems.Add(nmi);
}
}
}
// Add custom items.
NodeMenuItem spacer = new NodeMenuItem("-", tn, n, null, null);
cm.MenuItems.Add(spacer);
NodeMenuItem collapse = new NodeMenuItem("Collapse", tn, n, null, null);
collapse.Click += new EventHandler(OnCollapse);
cm.MenuItems.Add(collapse);
NodeMenuItem expand = new NodeMenuItem("Expand", tn, n, null, null);
expand.Click += new EventHandler(OnExpand);
cm.MenuItems.Add(expand);
NodeMenuItem expandAll = new NodeMenuItem("Expand All", tn, n, null, null);
expandAll.Click += new EventHandler(OnExpandAll);
cm.MenuItems.Add(expandAll);
return cm;
}
protected void BuildChildPopups(NodeMenuItem nmi, Popup popup, TreeNode tn, NodeDef n, NodeDef refNode)
{
foreach (Popup childPopup in popup.PopupItems)
{
NodeMenuItem nmiChild = new NodeMenuItem(childPopup.Text, tn, n, refNode, childPopup);
if (childPopup.PopupItems.Count == 0)
{
nmiChild.Click += new EventHandler(OnContextItem);
nmiChild.Enabled = ((NodeInstance)tn.Tag).Instance.IsEnabled(childPopup.Tag, childPopup.Enabled);
}
BuildChildPopups(nmiChild, childPopup, tn, n, refNode);
nmi.MenuItems.Add(nmiChild);
}
}
