/// <summary>
/// Gets called when the parent model element of the current model element is about to change
/// </summary>
/// <param name="oldParent">The old parent model element</param>
/// <param name="newParent">The new parent model element</param>
protected override void OnParentChanging(IModelElement newParent, IModelElement oldParent)
{
IGrafcet oldGrafcet = ModelHelper.CastAs <IGrafcet>(oldParent);
IGrafcet newGrafcet = ModelHelper.CastAs <IGrafcet>(newParent);
ValueChangedEventArgs e = new ValueChangedEventArgs(oldGrafcet, newGrafcet);
this.OnGrafcetChanging(e);
this.OnPropertyChanging("Grafcet", e, _grafcetReference);
}
/// <summary>
/// Adds the given element to the collection
/// </summary>
/// <param name="item">The item to add</param>
public override void Add(IModelElement item)
{
if ((this._parent.Grafcet == null))
{
IGrafcet grafcetCasted = item.As <IGrafcet>();
if ((grafcetCasted != null))
{
this._parent.Grafcet = grafcetCasted;
return;
}
}
}
/// <summary>
/// Gets called when the parent model element of the current model element changes
/// </summary>
/// <param name="oldParent">The old parent model element</param>
/// <param name="newParent">The new parent model element</param>
protected override void OnParentChanged(IModelElement newParent, IModelElement oldParent)
{
IGrafcet oldGrafcet = ModelHelper.CastAs <IGrafcet>(oldParent);
IGrafcet newGrafcet = ModelHelper.CastAs <IGrafcet>(newParent);
if ((oldGrafcet != null))
{
oldGrafcet.Elements.Remove(this);
}
if ((newGrafcet != null))
{
newGrafcet.Elements.Add(this);
}
ValueChangedEventArgs e = new ValueChangedEventArgs(oldGrafcet, newGrafcet);
this.OnGrafcetChanged(e);
this.OnPropertyChanged("Grafcet", e, _grafcetReference);
base.OnParentChanged(newParent, oldParent);
}