public virtual bool IsSelected(ILookup context, IModelItem item)
{
ISelectionModel <IModelItem> selectionModel = context.Lookup <ISelectionModel <IModelItem> >();
if (selectionModel != null)
{
return(selectionModel.IsSelected(item));
}
return(false);
}
private static void MarkFixedAndAffectedItems(GenericLayoutData data, HierarchicLayoutData hierarchicLayoutData, ISelectionModel <IModelItem> graphSelection,
bool layoutOnlySelection)
{
if (layoutOnlySelection)
{
var affectedEdges = Mappers.FromDelegate((IEdge edge) =>
graphSelection.IsSelected(edge) ||
graphSelection.IsSelected(edge.GetSourceNode()) ||
graphSelection.IsSelected(edge.GetTargetNode()));
data.AddItemCollection(LayoutKeys.AffectedEdgesDpKey).Mapper = affectedEdges;
// fix ports of unselected edges and edges at event ports
data.AddItemMapping(PortConstraintKeys.SourcePortConstraintDpKey).Delegate =
edge =>
(!affectedEdges[edge] || edge.SourcePort.Style is EventPortStyle)
? PortConstraint.Create(GetSide(edge, true))
: null;
data.AddItemMapping(PortConstraintKeys.TargetPortConstraintDpKey).Delegate =
edge => !affectedEdges[edge] ? PortConstraint.Create(GetSide(edge, false)) : null;
// give core layout hints that selected nodes and edges should be incremental
hierarchicLayoutData.IncrementalHints.ContextDelegate = (item, factory) => {
if (item is INode && graphSelection.IsSelected(item))
{
return(factory.CreateLayerIncrementallyHint(item));
}
else if (item is IEdge && affectedEdges[(IEdge)item])
{
return(factory.CreateSequenceIncrementallyHint(item));
}
return(null);
};
data.AddItemCollection(BpmnLayout.AffectedLabelsDpKey).Delegate = label => {
var edge = label.Owner as IEdge;
if (edge != null)
{
return(affectedEdges[edge]);
}
var node = label.Owner as INode;
if (node != null)
{
var isInnerLabel = node.Layout.Contains(label.GetLayout().GetCenter());
bool isPool = node.Style is PoolNodeStyle;
bool isChoreography = node.Style is ChoreographyNodeStyle;
return(!isInnerLabel && !isPool && !isChoreography && graphSelection.IsSelected(node));
}
return(false);
};
}
else
{
// fix source port of edges at event ports
data.AddItemMapping(PortConstraintKeys.SourcePortConstraintDpKey).Delegate =
edge => edge.SourcePort.Style is EventPortStyle?PortConstraint.Create(GetSide(edge, true)) : null;
data.AddItemCollection(BpmnLayout.AffectedLabelsDpKey).Delegate = label => {
if (label.Owner is IEdge)
{
return(true);
}
var node = label.Owner as INode;
if (node != null)
{
var isInnerLabel = node.Layout.Contains(label.GetLayout().GetCenter());
bool isPool = node.Style is PoolNodeStyle;
bool isChoreography = node.Style is ChoreographyNodeStyle;
return(!isInnerLabel && !isPool && !isChoreography);
}
return(false);
};
}
}
/// <summary>
/// Check whether the specified model item has been selected in the underlying
/// IGraph.
/// </summary>
private static bool IsSelected(ISelectionModel <IModelItem> selectionModel, IModelItem item)
{
return(selectionModel != null && selectionModel.IsSelected(item));
}
private static bool IsNodeLabelAffected(IGraph graph, ISelectionModel <IModelItem> selection, ILabel label, bool layoutOnlySelection)
{
var node = label.Owner as INode;
if (node != null)
{
var isInnerLabel = node.Layout.Contains(label.GetLayout().GetCenter());
bool isPool = node.Style is PoolNodeStyle;
bool isChoreography = node.Style is ChoreographyNodeStyle;
var isGroupNode = graph.IsGroupNode(node);
return(!isInnerLabel && !isPool && !isChoreography && !isGroupNode && (!layoutOnlySelection || selection.IsSelected(node)));
}
return(false);
}