private void addDynamicNode(DBField field, DBRelation relation, bool forceRoot)
{
if (_menu == null)
{
return;
}
SuspendLayout();
// build internal node object
DBNode <T> newNode = new DBNode <T>();
newNode.Name = field.FriendlyName;
newNode.BasicFilteringField = field;
newNode.BasicFilteringRelation = relation;
newNode.DynamicNode = true;
newNode.DBManager = DBManager;
count++;
// build treenode object (for the UI)
asyncInput = newNode;
forceNewNodeRoot = forceRoot;
ProgressPopup p = new ProgressPopup(new WorkerDelegate(createTreeNodeAsyncWorker));
p.Owner = FindForm();
p.Text = "Building Menu Tree";
p.WorkComplete += new WorkCompleteDelegate(addDynamicNode_TreeNodeCreated);
p.ShowDialogDelayed(300);
}
private void treeView_DragDrop(object sender, DragEventArgs e)
{
clearDragDropMarkup();
if (dropPosition == DropPositionEnum.None)
{
return;
}
// grab the item being moved
movingNode = (TreeNode)e.Data.GetData(typeof(TreeNode));
if (movingNode == null)
{
return;
}
// grab the target node
Point pt = treeView.PointToClient(new Point(e.X, e.Y));
targetNode = treeView.GetNodeAt(pt);
// grab the old parent
TreeNode oldParent = movingNode.Parent;
// remove node from treeview and internal menu system
if (oldParent != null)
{
oldParent.Nodes.Remove(movingNode);
((DBNode <T>)oldParent.Tag).Children.Remove((DBNode <T>)movingNode.Tag);
updateFilteredItems(oldParent, false);
setVisualProperties(oldParent);
}
else
{
treeView.Nodes.Remove(movingNode);
_menu.RootNodes.Remove((DBNode <T>)movingNode.Tag);
}
// do the heavy lifting in a new thread while displaying a progress dialog
ProgressPopup popup = new ProgressPopup(new WorkerDelegate(updateMovedNodeDragDrop));
popup.Owner = FindForm();
popup.Text = "Updating Moved Menu Item";
// node will be reinserted by the callback method when work is complete
popup.WorkComplete += new WorkCompleteDelegate(updateMovedNode_Complete);
popup.ShowDialogDelayed(300);
}
void nodeModified(IDBNode node)
{
if (modificationDetails.ContainsKey((DBNode <T>)node))
{
return;
}
if (treeNodeLookup.ContainsKey((DBNode <T>)node) && this.Visible)
{
// store modification details
TreeNode treeNode = treeNodeLookup[(DBNode <T>)node];
NodeModifiedDetails details = new NodeModifiedDetails();
details.Index = treeNode.Index;
details.Parent = treeNode.Parent;
modificationDetails[(DBNode <T>)node] = details;
pendingModification.Push((DBNode <T>)node);
// temporarily remove the node
rebuildingNode = true;
if (details.Parent == null)
{
treeView.Nodes.Remove(treeNode);
}
else
{
details.Parent.Nodes.Remove(treeNode);
}
// add a dummy node so the user doesnt freak out
// update the node in a new thread while displaying a progress dialog
ProgressPopup popup = new ProgressPopup(new WorkerDelegate(nodeModifiedWorker));
popup.Owner = FindForm();
popup.Text = "Updating Menu Items";
popup.WorkComplete += new WorkCompleteDelegate(modifyingNode_Complete);
popup.ShowDialogDelayed(300);
}
}
