protected void NDrawingView1_AsyncClick(object sender, EventArgs e)
{
NCallbackMouseEventArgs args = e as NCallbackMouseEventArgs;
NNodeList nodes = NDrawingView1.HitTest(args);
NNodeList shapes = nodes.Filter(Nevron.Diagram.Filters.NFilters.Shape2D);
NExpandCollapseCheck check = null;
int length = shapes.Count;
for (int i = 0; i < length; i++)
{
if (shapes[i] is NExpandCollapseCheck)
{
check = shapes[i] as NExpandCollapseCheck;
break;
}
}
if (check == null)
{
return;
}
NExpandableShape shape = check.ParentNode.ParentNode as NExpandableShape;
shape.Expand(!shape.Expanded);
}
/// <summary>
///
/// </summary>
/// <param name="expandShape"></param>
public void Expand(bool expandShape)
{
// expand or collapse in a single transation
StartTransaction(expandShape ? "Expand Tree" : "Collapse Tree");
// mark shape as expanded
Expanded = expandShape;
// show/hide the plus or minus
NExpandCollapseCheck check = GetExpandCollapseCheck();
NPathPrimitive pathPrimitive;
pathPrimitive = check.Primitives.GetChildAt(1) as NPathPrimitive;
pathPrimitive.Visible = !expandShape;
pathPrimitive = check.Primitives.GetChildAt(2) as NPathPrimitive;
pathPrimitive.Visible = expandShape;
// show/hide all outgoing shapes
NNodeList nodes = GetOutgoingShapes();
for (int i = 0; i < nodes.Count; i++)
{
NShape shape = (nodes[i] as NShape);
shape.Visible = expandShape;
}
// show/hide all destination shapes
nodes = GetDestinationShapes();
for (int i = 0; i < nodes.Count; i++)
{
NShape shape = (nodes[i] as NShape);
shape.Visible = expandShape;
}
// expand/collapse the destination shapes
for (int i = 0; i < nodes.Count; i++)
{
NExpandableShape expandableShape = (nodes[i] as NExpandableShape);
if (expandableShape != null)
{
expandableShape.Expand(expandShape);
}
}
// commit the transaction
Commit();
}