public override bool CanConnectStart(IFigure figure)
{
if (figure is ActorFigure) {
if (!figure.Includes(EndFigure)) {
return true;
}
}
return false;
}
public override bool CanConnectEnd(IFigure figure)
{
if (figure is Entity) {
if (!figure.Includes (StartFigure)) {
return true;
}
}
return false;
}
protected override bool IsConnectionPossible (IFigure figure) {
if (!figure.Includes (Connection) &&
figure.CanConnect &&
Connection.CanConnectStart (figure)) {
return true;
}
return false;
}
protected override bool IsConnectionPossible(IFigure figure)
{
if (!figure.Includes(Connection) &&
figure.CanConnect &&
Connection.CanConnectStart(figure))
{
return(true);
}
return(false);
}
public override bool CanConnectEnd(IFigure figure)
{
/* if(blockUntilRelease){
DisconnectEnd();
DisconnectStart();
return false;
}*/
if((figure is TableFigure) && (StartFigure as TableFigure).SourceReadyToCreateFk() && (!figure.Includes (StartFigure))){
return true;
} else if(figure != StartFigure){
Invalidate();
/*blockUntilRelease=true;
MonoDevelop.Core.Gui.MessageService.ShowWarning("Is imposible to create a foreign key between this two tables because source table lacks from primary key");*/
}
return false;
}