protected override void Dispose(bool disposing)
{
if(disposing)
{
if(_dropDown != null)
{
_dropDown.Closed -= dropDown_Closed;
_dropDown.Dispose();
_dropDown = null;
}
}
base.Dispose(disposing);
}
protected override void OnListBoxAttached()
{
base.OnListBoxAttached();
if(_enableExtender)
{
_extender = new SubjectColumnExtender(this);
Extender = new Popup(_extender);
}
}
protected override void OnListBoxAttached()
{
base.OnListBoxAttached();
_extender = new DateColumnExtender(this);
Extender = new Popup(_extender);
}
protected override void OnListBoxAttached()
{
base.OnListBoxAttached();
_extender = new HashColumnExtender(this);
Extender = new Popup(_extender);
}
private void SetOwnerItem(Control control)
{
if(control == null)
{
return;
}
Popup popupControl = control as Popup;
if(popupControl != null)
{
_ownerPopup = popupControl;
_ownerPopup._childPopup = this;
OwnerItem = popupControl.Items[0];
return;
}
else if(_ownerControl == null)
{
_ownerControl = control;
}
if(control.Parent != null)
{
SetOwnerItem(control.Parent);
}
}