/// <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.InitExpression == null))
{
IOclExpression initExpressionCasted = item.As <IOclExpression>();
if ((initExpressionCasted != null))
{
this._parent.InitExpression = initExpressionCasted;
return;
}
}
if ((this._parent.LetExp == null))
{
ILetExp letExpCasted = item.As <ILetExp>();
if ((letExpCasted != null))
{
this._parent.LetExp = letExpCasted;
return;
}
}
if ((this._parent.RepresentedParameter == null))
{
IParameter representedParameterCasted = item.As <IParameter>();
if ((representedParameterCasted != null))
{
this._parent.RepresentedParameter = representedParameterCasted;
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)
{
ILetExp oldLetExp = ModelHelper.CastAs <ILetExp>(oldParent);
ILetExp newLetExp = ModelHelper.CastAs <ILetExp>(newParent);
if ((oldLetExp != null))
{
oldLetExp.Variable = null;
}
if ((newLetExp != null))
{
newLetExp.Variable = this;
}
ValueChangedEventArgs e = new ValueChangedEventArgs(oldLetExp, newLetExp);
this.OnLetExpChanged(e);
this.OnPropertyChanged("LetExp", e);
}