protected VertexControl GetOrCreateVertexControl([NotNull] TVertex vertex)
{
VertexControl vertexControl = GetVertexControl(vertex);
if (vertexControl is null)
{
return(CreateVertexControl(vertex));
}
return(vertexControl);
}
protected virtual VertexControl CreateVertexControl([NotNull] TVertex vertex)
{
var compoundGraph = Graph as ICompoundGraph <TVertex, TEdge>;
VertexControl vertexControl;
if (IsCompoundMode && compoundGraph != null && compoundGraph.IsCompoundVertex(vertex))
{
var compoundVertexControl = new CompoundVertexControl
{
Vertex = vertex,
DataContext = vertex,
};
vertexControl = compoundVertexControl;
}
else
{
// Create the Control of the vertex
vertexControl = new VertexControl
{
Vertex = vertex,
DataContext = vertex,
};
}
VerticesControls[vertex] = vertexControl;
vertexControl.RootCanvas = this;
if (IsCompoundMode && compoundGraph != null && compoundGraph.IsChildVertex(vertex))
{
TVertex parent = compoundGraph.GetParent(vertex);
Debug.Assert(parent != null, "Vertex considered as child one has no parent.");
var parentControl = GetOrCreateVertexControl(parent) as CompoundVertexControl;
Debug.Assert(parentControl != null);
parentControl.Vertices.Add(vertexControl);
}
else
{
// Add the presenter to the GraphLayout
Children.Add(vertexControl);
}
// Measure & Arrange
vertexControl.InvalidateMeasure();
SetHighlightProperties(vertex, vertexControl);
RunCreationTransition(vertexControl);
return(vertexControl);
}
/// <summary>
/// Initializes the position of the given <paramref name="vertex"/>.
/// </summary>
/// <param name="vertex">Graph vertex.</param>
protected virtual void InitializePosition([NotNull] TVertex vertex)
{
VertexControl vertexControl = VerticesControls[vertex];
// Initialize position
if (Graph.ContainsVertex(vertex) &&
Graph.Degree(vertex) > 0 &&
TryComputePosition(vertex, out Point position))
{
SetX(vertexControl, position.X);
SetY(vertexControl, position.Y);
}
}
protected virtual void CreateVertexControl(TVertex vertex)
{
VertexControl presenter;
var compoundGraph = Graph as ICompoundGraph <TVertex, TEdge>;
if (IsCompoundMode && compoundGraph != null && compoundGraph.IsCompoundVertex(vertex))
{
var compoundPresenter = new CompoundVertexControl
{
Vertex = vertex,
DataContext = vertex,
};
compoundPresenter.Expanded += CompoundVertexControl_ExpandedOrCollapsed;
compoundPresenter.Collapsed += CompoundVertexControl_ExpandedOrCollapsed;
presenter = compoundPresenter;
}
else
{
// Create the Control of the vertex
presenter = new VertexControl
{
Vertex = vertex,
DataContext = vertex,
};
}
//var presenter = _vertexPool.GetObject();
//presenter.Vertex = vertex;
_vertexControls[vertex] = presenter;
presenter.RootCanvas = this;
if (IsCompoundMode && compoundGraph != null && compoundGraph.IsChildVertex(vertex))
{
var parent = compoundGraph.GetParent(vertex);
var parentControl = GetOrCreateVertexControl(parent) as CompoundVertexControl;
Debug.Assert(parentControl != null);
parentControl.Vertices.Add(presenter);
}
else
{
//add the presenter to the GraphLayout
Children.Add(presenter);
}
//Measuring & Arrange
presenter.InvalidateMeasure();
SetHighlightProperties(vertex, presenter);
RunCreationTransition(presenter);
}
private void SetHighlightProperties([NotNull] TVertex vertex, [NotNull] VertexControl vertexControl)
{
Debug.Assert(vertex != null);
Debug.Assert(vertexControl != null);
if (IsHighlightedVertex(vertex, out object highlightInfo))
{
GraphElementBehaviour.SetIsHighlighted(vertexControl, true);
GraphElementBehaviour.SetHighlightInfo(vertexControl, highlightInfo);
}
if (IsSemiHighlightedVertex(vertex, out object semiHighlightInfo))
{
GraphElementBehaviour.SetIsSemiHighlighted(vertexControl, true);
GraphElementBehaviour.SetSemiHighlightInfo(vertexControl, semiHighlightInfo);
}
}
private void SetHighlightProperties(TVertex vertex, VertexControl presenter)
{
object highlightInfo;
if (IsHighlightedVertex(vertex, out highlightInfo))
{
GraphElementBehaviour.SetIsHighlighted(presenter, true);
GraphElementBehaviour.SetHighlightInfo(presenter, highlightInfo);
}
object semiHighlightInfo;
if (IsSemiHighlightedVertex(vertex, out semiHighlightInfo))
{
GraphElementBehaviour.SetIsSemiHighlighted(presenter, true);
GraphElementBehaviour.SetSemiHighlightInfo(presenter, semiHighlightInfo);
}
}
