/// <summary>
/// If the role object is part of a sticky external constraint shape
/// object then activate it on a double click. Equivalent to the
/// 'ActiveRoleSequence' diagram command.
/// </summary>
protected override void OnDoubleClick(DiagramPointEventArgs e)
{
// Note this looks like a strange place to put this, but this
// is the mouse action that is active when a role is clicked on.
if (myAllowDoubleClick)
{
ORMDiagram ormDiagram = Diagram as ORMDiagram;
IStickyObject sticky;
ExternalConstraintShape constraintShape;
if (null != (sticky = ormDiagram.StickyObject) &&
null != (constraintShape = sticky as ExternalConstraintShape))
{
foreach (Role role in e.DiagramHitTestInfo.HitDiagramItem.RepresentedElements)
{
if (sticky.StickySelectable(role))
{
IConstraint constraint = constraintShape.AssociatedConstraint;
Role constraintRole = role;
switch (constraint.ConstraintType)
{
case ConstraintType.ExternalUniqueness:
case ConstraintType.Frequency:
Role oppositeRole;
ObjectType oppositeRolePlayer;
if (null != (oppositeRole = role.OppositeRole as Role) &&
null != (oppositeRolePlayer = oppositeRole.RolePlayer) &&
oppositeRolePlayer.IsImplicitBooleanValue)
{
constraintRole = oppositeRole;
}
break;
}
foreach (ConstraintRoleSequence sequence in constraintRole.ConstraintRoleSequenceCollection)
{
if (constraint == sequence.Constraint)
{
ExternalConstraintConnectAction connectAction = ormDiagram.ExternalConstraintConnectAction;
connectAction.ConstraintRoleSequenceToEdit = sequence;
connectAction.ChainMouseAction(constraintShape, e.DiagramClientView);
e.Handled = true;
return;
}
}
}
break;
}
}
}
base.OnDoubleClick(e);
}
/// <summary>
/// Activate a new role sequence connect action. For a set comparison constraint
/// this adds a new sequence. For a set constraint it activates the current sequence.
/// </summary>
/// <param name="clientView">The active diagram client view. This can be retrieved
/// from the shape if it is not specified.</param>
protected void ActivateNewRoleSequenceConnectAction(DiagramClientView clientView)
{
ORMDiagram diagram;
IConstraint constraint;
if (null != (diagram = this.Diagram as ORMDiagram) &&
diagram.StickyObject == this &&
null != (constraint = this.AssociatedConstraint))
{
ExternalConstraintConnectAction connectAction = diagram.ExternalConstraintConnectAction;
switch (constraint.ConstraintStorageStyle)
{
case ConstraintStorageStyle.SetConstraint:
connectAction.ConstraintRoleSequenceToEdit = constraint as ConstraintRoleSequence;
break;
case ConstraintStorageStyle.SetComparisonConstraint:
int maximum = ConstraintUtility.RoleSequenceCountMaximum(constraint);
if (maximum > 0 && ((SetComparisonConstraint)constraint).RoleSequenceCollection.Count >= maximum)
{
return;
}
if (constraint.ConstraintType == ConstraintType.Exclusion)
{
// If this is a subtype connect action already, then give it the first sequence
ExclusionConstraint exclusion = (ExclusionConstraint)constraint;
foreach (FactType existingFactType in exclusion.FactTypeCollection)
{
if (existingFactType is SubtypeFact)
{
connectAction.ConstraintRoleSequenceToEdit = exclusion.RoleSequenceCollection[0];
break;
}
}
}
break;
}
if (!connectAction.IsActive)
{
if (clientView == null)
{
clientView = diagram.ActiveDiagramView.DiagramClientView;
}
connectAction.ChainMouseAction(this, clientView);
}
}
}
