/// <summary>
/// Creates a <see cref="BpmnDiagram"/>.
/// </summary>
/// <param name="xNode">The XML node to start with</param>
/// <returns>The parsed <see cref="BpmnDiagram"/></returns>
private BpmnDiagram BuildDiagram(XElement xNode)
{
var diagram = new BpmnDiagram(xNode);
var bpmnPlane = BuildPlane(BpmnNM.GetElement(xNode, BpmnNM.BpmnDi, BpmnDiConstants.BpmnPlaneElement));
if (bpmnPlane != null)
{
diagram.AddPlane(bpmnPlane);
}
foreach (var xChild in BpmnNM.GetElements(xNode, BpmnNM.BpmnDi, BpmnDiConstants.BpmnLabelStyleElement))
{
var style = new BpmnLabelStyle(xChild);
diagram.AddStyle(style);
}
// Setting a default LabelStyle for all labels that do not have their own style.
diagram.DefaultStyle = BpmnLabelStyle.NewDefaultInstance();
return(diagram);
}
/// <summary>
/// Parse all bpmn shapes and bpmn edges and their associations and attributes from one <see cref="BpmnPlane"/>
/// </summary>
/// <param name="xNode">The XML node to start with</param>
private BpmnPlane BuildPlane(XElement xNode)
{
var plane = new BpmnPlane(xNode, Elements);
if (plane.Element == null)
{
return(null);
}
// All Shapes
foreach (var xChild in BpmnNM.GetElements(xNode, BpmnNM.BpmnDi, BpmnDiConstants.BpmnShapeElement))
{
var shape = new BpmnShape(xChild, Elements);
if (shape.Element != null)
{
plane.AddShape(shape);
}
else
{
Messages.Add("Error in parsing shape " + (shape.Id) + ", could not find corresponding BPMNElement.");
continue;
}
// Shapes usually define their bounds
shape.AddBounds(BpmnNM.GetElement(xChild, BpmnNM.Dc, BpmnDiConstants.BoundsElement));
// Shapes can have a BPMNLabel as child
var bpmnLabel = BpmnNM.GetElement(xChild, BpmnNM.BpmnDi, BpmnDiConstants.BpmnLabelElement);
if (bpmnLabel != null)
{
// Label bounds
var bounds = BpmnNM.GetElement(bpmnLabel, BpmnNM.Dc, BpmnDiConstants.BoundsElement);
shape.AddLabel(bounds);
// BpmnLabelStyle
shape.LabelStyle = BpmnNM.GetAttributeValue(bpmnLabel, BpmnNM.BpmnDi, BpmnDiConstants.LabelStyleAttribute);
}
}
foreach (var xChild in BpmnNM.GetElements(xNode, BpmnNM.BpmnDi, BpmnDiConstants.BpmnEdgeElement))
{
var edge = new BpmnEdge(xChild, Elements);
if (edge.Element != null)
{
plane.AddEdge(edge);
}
else
{
Messages.Add("Error in parsing edge " + (edge.Id) + ", could not find corresponding BPMNElement.");
continue;
}
// Edges define 2 or more Waypoints
foreach (var waypoint in BpmnNM.GetElements(xChild, BpmnNM.Di, BpmnDiConstants.WaypointElement))
{
edge.AddWayPoint(waypoint);
}
// Edges can have a BPMNLabel as child
var bpmnLabel = BpmnNM.GetElement(xChild, BpmnNM.BpmnDi, BpmnDiConstants.BpmnLabelElement);
if (bpmnLabel != null)
{
// Label bounds
var bounds = BpmnNM.GetElement(bpmnLabel, BpmnNM.Dc, BpmnDiConstants.BoundsElement);
edge.AddLabel(bounds);
// BpmnLabelStyle
edge.LabelStyle = BpmnNM.GetAttributeValue(bpmnLabel, BpmnNM.BpmnDi, BpmnDiConstants.LabelStyleAttribute);
}
}
return(plane);
}