public Collection <Error> IsPossibleSetDataContext(LogicalLibrary.Component source, LogicalLibrary.Component target)
{
Collection <Error> errors = new Collection <Error>();
Widget sourceWidget = source as Widget;
FormMenuItem formMenuItem = source as FormMenuItem;
EnterSingleDataForm enterSingleDataForm = source as EnterSingleDataForm;
if (formMenuItem != null)
{
sourceWidget = activeWidget;
}
if (sourceWidget.OutputDataContext == null && (formMenuItem == null) && (enterSingleDataForm == null))
{
errors.Add(new Error("", "", LogicalLibrary.Properties.Resources.NoOutputContext));
}
if (sourceWidget.OutputDataContext != null && target.InputDataContext != null)
{
if (!(target is DataSource))
{
if (sourceWidget.OutputDataContext.Name != target.InputDataContext.Name)
{
errors.Add(new Error("", "", LogicalLibrary.Properties.Resources.DifferentContext));
}
}
}
return(errors);
}
public override bool Equals(object obj)
{
if (obj != null)
{
FormMenuItem formMenuItem = (FormMenuItem)obj;
if (String.CompareOrdinal(this.text, formMenuItem.text) == 0)
{
return(true);
}
}
return(false);
}
/// <summary>
/// Valida la conexión y retorna una colección de errores indicados.
/// </summary>
/// <returns></returns>
public Collection <Error> CheckConnection()
{
Collection <Error> connectionErrors = new Collection <Error>();
// No es posible conectar "Enter Single Data Form" o "Show Data Form" con un "List Form"
if (connectionWidgetTarget is ListForm)
{
if (connectionWidgetFrom is EnterSingleDataForm || connectionWidgetFrom is ShowDataForm)
{
connectionErrors.Add(new Error("", "", LogicalLibrary.Properties.Resources.PreviousFormToListForm));
}
}
// No es posible conectar "Data Source" u otro "Show Data Form" con un "Show Data Form"
if (connectionWidgetTarget is ShowDataForm)
{
if (connectionWidgetFrom is DataSource || connectionWidgetFrom is ShowDataForm)
{
connectionErrors.Add(new Error("", "", LogicalLibrary.Properties.Resources.PreviousFormToShowForm));
}
}
if (connectionWidgetTarget is DataSource)
{
if ((connectionWidgetTarget as DataSource).OutputDataContext == null || (connectionWidgetTarget as DataSource).RelatedTable.IsStorage)
{
// Solo puede conectar un "Input Form" con un "Data Storage".
if (!(connectionWidgetFrom is EnterSingleDataForm))
{
connectionErrors.Add(new Error("", "", LogicalLibrary.Properties.Resources.PreviousFormToDataStorage));
}
}
else
{
// Un origen de datos no puede ser un formulario objetivo
connectionErrors.Add(new Error("", "", LogicalLibrary.Properties.Resources.DataSourceCantBeTarget));
}
}
if (connectionWidgetTarget is EnterSingleDataForm)
{
if (connectionWidgetFrom is DataSource)
{
// No es posible conectar un "Data Source" con un "Enter Single Data Form"
connectionErrors.Add(new Error("", "", LogicalLibrary.Properties.Resources.NoDataSourceToInputForm));
}
}
if (connectionWidgetFrom != null && connectionWidgetTarget != null)
{
if (connectionWidgetFrom == connectionWidgetTarget)
{
// Seleccione dos formularios diferentes para hacer una conexión
connectionErrors.Add(new Error("", "", LogicalLibrary.Properties.Resources.SameFormForConnection));
}
}
if (connectionWidgetFrom is EnterSingleDataForm)
{
if (connectionWidgetTarget is DataSource)
{
bool hasStorage = CheckInputFormToStorageConnection(connectionWidgetFrom as EnterSingleDataForm);
if (hasStorage)
{
// El formulario de ingreso de datos ya posee asignado un almacenamiento
connectionErrors.Add(new Error("", "", LogicalLibrary.Properties.Resources.InputFormHasStorage));
}
}
else
{
bool hasOtherForm = CheckInputFormToOtherFormConnection(connectionWidgetFrom as EnterSingleDataForm);
if (hasOtherForm)
{
// El formulario de ingreso de datos ya posee un formulario objetivo
connectionErrors.Add(new Error("", "", LogicalLibrary.Properties.Resources.InputFormHasOtherForm));
}
}
}
if (ConnectionPointFrom != null && ConnectionPointTarget != null)
{
if (ConnectionPointFrom.ConnectionPointType == ConnectionPointTarget.ConnectionPointType)
{
// Seleccione dos tipos de ConnectionsPoint diferentes para hacer una conexión.
connectionErrors.Add(new Error("", "", LogicalLibrary.Properties.Resources.SameConnectionPointType));
}
FormMenuItem componentFrom = ConnectionPointFrom.Parent as FormMenuItem;
if (componentFrom != null)
{
if (((FormMenuItem)componentFrom).Parent == ConnectionPointTarget.Parent)
{
// Seleccione dos formularios diferentes para hacer una conexión.
connectionErrors.Add(new Error("", "", LogicalLibrary.Properties.Resources.SameFormForConnection));
}
}
}
return(connectionErrors);
}