/// <summary>
/// Función que crea una conexión
/// </summary>
/// <param name="from">IDrawAbleWpf origen de la conexón.</param>
/// <param name="target">IDrawAbleWpf destino de la conexión.</param>
/// <param name="relationType">Tipo de relación que se creará.</param>
private void CreateConnection(IDrawAbleWpf from, IDrawAbleWpf target, RelationType relationType)
{
if (from == null)
{
throw new ArgumentNullException("from", "from can not be null");
}
if (target == null)
{
throw new ArgumentNullException("target", "target can not be null");
}
Widget widgetTarget = target as Widget;
Widget widgetFrom = from as Widget;
Error error = myDataModel.CheckDuplicatedConnection(widgetFrom as Table, widgetTarget as Table);
if (error != null)
{
Util.ShowErrorDialog(error.Description);
windowsDataModelDesigner.textBlockStatusBar.Text = String.Empty;
return;
}
RelationWpf newRelation = new RelationWpf(widgetFrom as TableWpf, widgetTarget as TableWpf, relationType);
this.AddRelation(newRelation);
RedrawConnections();
}
/// <summary>
/// Función que permite elimiar una relación al DataModelDocumentWpf.
/// </summary>
/// <param name="relation">Relación a ser eliminada.</param>
public void RemoveRelation(RelationWpf relation)
{
if (relation == null)
{
throw new ArgumentNullException("relation", "relation can not be null");
}
MyDataModel.RemoveRelation(relation);
this.canvasDraw.Children.Remove(relation.UIElement);
}
/// <summary>
/// Función que permite agregar una relación al DataModelDocumentWpf.
/// </summary>
/// <param name="newRelation">Relación a ser agregada.</param>
public void AddRelation(RelationWpf newRelation)
{
if (newRelation == null)
{
throw new ArgumentNullException("newRelation", "newRelation can not be null");
}
newRelation.ContextMenuDeleteClick += new RoutedEventHandler(newRelation_ContextMenuDeleteClick);
MyDataModel.AddRelation(newRelation);
}