/// <summary>
///
/// </summary>
/// <param name="expandState"></param>
public void Expand(bool expandState)
{
// expand or collapse in a single transation
StartTransaction(expandState? "Expand Tree": "Collapse Tree");
// mark shape as expanded
Expanded = expandState;
// show/hide the plus or minus
NExpandCollapseCheck check = GetExpandCollapseCheck();
((NPathPrimitive)check.Primitives.GetChildAt(1)).Visible = !expandState;
((NPathPrimitive)check.Primitives.GetChildAt(2)).Visible = expandState;
// show/hide all outgoing shapes
NNodeList nodes = GetOutgoingShapes();
for (int i = 0; i < nodes.Count; i++)
{
NShape shape = (nodes[i] as NShape);
shape.Visible = expandState;
}
// show/hide all destination shapes
nodes = GetDestinationShapes();
for (int i = 0; i < nodes.Count; i++)
{
NShape shape = (nodes[i] as NShape);
shape.Visible = expandState;
}
// expand/collapse the destination shapes
for (int i = 0; i < nodes.Count; i++)
{
NExpandableShape expandableShape = (nodes[i] as NExpandableShape);
if (expandableShape != null)
{
expandableShape.Expand(expandState);
}
}
// commit the transaction
Commit();
}
/// <summary>
///
/// </summary>
/// <param name="e"></param>
public override void OnMouseDown(NMouseEventArgs e)
{
// handle only the left mouse down single click on the check box
if (e.Button == MouseButtons.Left || e.Clicks == 1)
{
NExpandCollapseCheck check = GetExpandCollapseCheck();
// check to see if the hit was on some of the check box children
if (NSceneTree.IsAncestorOfNode(check, e.HitNode))
{
Expand(!Expanded);
// mark as processed and return (stops event bubbling)
e.Processed = true;
return;
}
}
// bubble event to previous mouse event handler
base.OnMouseDown(e);
}
public NExpandableShape()
{
// add a rectangle shape as base
NRectangleShape rect = new NRectangleShape(new NRectangleF(0, 0, 100, 100));
rect.DestroyShapeElements(ShapeElementsMask.All);
rect.Protection = new NAbilities(AbilitiesMask.Select | AbilitiesMask.InplaceEdit);
Shapes.AddChild(rect);
// add an expand collapse shape
NExpandCollapseCheck check = new NExpandCollapseCheck();
check.Bounds = new NRectangleF(105, 0, 10, 10);
check.Protection = new NAbilities(AbilitiesMask.Select | AbilitiesMask.InplaceEdit);
check.ResizeInAggregate = ResizeInAggregate.RepositionOnly;
Shapes.AddChild(check);
// update the model bounds with the rectangle bounds
UpdateModelBounds(rect.Transform.TransformBounds(rect.ModelBounds));
// initially it is expanded
m_bExpanded = true;
// by default the group has one dynamic port anchored to the rectangle
CreateShapeElements(ShapeElementsMask.Ports);
NDynamicPort port = new NDynamicPort(rect.UniqueId, ContentAlignment.MiddleCenter, DynamicPortGlueMode.GlueToContour);
Ports.AddChild(port);
Ports.DefaultInwardPortUniqueId = port.UniqueId;
// by default the group has one rotated bounds port anchored to the rectangle
CreateShapeElements(ShapeElementsMask.Labels);
NRotatedBoundsLabel label = new NRotatedBoundsLabel("", rect.UniqueId, new Nevron.Diagram.NMargins(10));
Labels.AddChild(label);
Labels.DefaultLabelUniqueId = label.UniqueId;
}
