/// <summary>
/// Adds the specified item to the flowchart.
/// </summary>
/// <param name="item">A new item that should be added to the flowchart.</param>
/// <param name="select">Specifies whether the item should be selected
/// after adding it to the flowchart.</param>
public void Add(ChartObject item, bool select)
{
// validity checks can be disabled to save processing time, but beware,
// evil things can happen if the item collections are left in invalild state
if (validityChecks)
{
// do not allow adding an item more than once
if (zOrder.Contains(item))
return;
if (item.getType() == ItemType.Arrow)
{
Arrow arrow = item as Arrow;
// links origin and destination nodes must be in the same diagram
if (!zOrder.Contains(arrow.Origin) &&
(arrow.Origin == null || !(arrow.Origin is DummyNode)))
return;
if (!zOrder.Contains(arrow.Destination) &&
(arrow.Destination == null || !(arrow.Destination is DummyNode)))
return;
}
}
if (item.getType() == ItemType.ControlHost)
{
// add the hosted control to the flowchart
ControlHost host = item as ControlHost;
if (host.Control != null)
{
this.Controls.Add(host.Control);
bringContainedControlToFront(host.Control);
}
}
item.setParent(this);
item.setConstructed();
// add to the diagram
AddItemCmd cmd = new AddItemCmd(item);
cmd.Execute();
RectangleF rc = item.getRepaintRect(false);
if (select)
{
selection.Change(item);
rc = Utilities.unionNonEmptyRects(rc,
selection.getRepaintRect(true));
}
if (undoManager.UndoEnabled)
cmd.saveSelState();
// repaint the diagram area covered by the new item
if (!LayoutSuspended)
invalidate(rc);
setDirty();
}
internal void complete(PointF point, FlowChart fc)
{
cycleRoots.Clear();
affectedArrows.Clear();
completing = true;
// someone might have deleted the item from a selection- change event
if (currentObject == null)
return;
if (action == Action.Create)
{
currentObject.completeCreate(point);
// someone might have deleted the item in itemCreated handler
if (itemDeleted)
return;
invalidRect = Utilities.unionRects(
invalidRect, currentObject.getRepaintRect(true));
fc.Dirty = true;
if (currentObject.getType() != ItemType.Selection)
{
// add to the diagram
AddItemCmd cmd = new AddItemCmd(currentObject);
cmd.Execute();
fc.fireObjCreated(currentObject);
// select the new item if SelectAfterCreate == true;
// check for null because people just love to delete currObject
// from within its xCreated or xActivated event handlers
if (fc.SelectAfterCreate && currentObject != null && !itemDeleted)
{
invalidRect = Utilities.unionRects(
invalidRect, fc.Selection.getRepaintRect(true));
fc.Selection.Change(currentObject);
if (currentObject != null)
{
invalidRect = Utilities.unionRects(
invalidRect, currentObject.getRepaintRect(true));
}
}
if (fc.UndoManager.UndoEnabled)
cmd.saveSelState();
}
}
else
{
currentObject.completeModify(point, this);
fc.UndoManager.onCompleteModify();
if (!itemDeleted)
{
invalidRect = Utilities.unionRects(invalidRect,
currentObject.getRepaintRect(true));
}
fc.Dirty = true;
}
}