/// <summary>Creates a new <see cref="DiagramEdge"/> instance.</summary>
public DiagramEdge(DiagramNode source, DiagramNode target, DiagramEdgeRole role, string label) {
Assumption.NotNull(source);
Assumption.NotNull(target);
Role = role;
Source = source;
Target = target;
Label = label.At(0).ToUpper() + label.After(0) + (Role.Has(DiagramEdgeRole.ZeroToMany) ? "*" : "");
ComputedPath = new PointCollection();
_initializeResources();
}
/// <summary>Loads the diagram with the given collection of classes and namespaces.</summary>
public void Load(IEnumerable<BplClass> classes) {
Children.Clear();
var counter = 0;
// blocks layer
_blocks = new Index<long, BplNamespace, DiagramBlock>(block => block.Id, block => block.Namespace);
Blocks = new ReadOnlyIndex<long, BplNamespace, DiagramBlock>(_blocks);
BlocksLayer = new Canvas();
Children.Add(BlocksLayer);
foreach (var ns in classes.Select(c => c.Namespace).Distinct()) {
var block = new DiagramBlock(this, counter++, ns);
BlocksLayer.Children.Add(block);
_blocks.Add(block);
}
// skeleton layer
SkeletonLayer = new Canvas();
Children.Add(SkeletonLayer);
// edges layer
Edges = new HashSet<DiagramEdge>();
EdgesLayer = new Canvas();
Children.Add(EdgesLayer);
// nodes layer
_nodes = new Index<long, BplClass, DiagramNode>(node => node.Id, node => node.Class);
Nodes = new ReadOnlyIndex<long, BplClass, DiagramNode>(_nodes);
NodesLayer = new Canvas();
Children.Add(NodesLayer);
foreach (var bplClass in classes) {
var node = new DiagramNode(this, counter++, bplClass);
NodesLayer.Children.Add(node);
_nodes.Add(node);
_blocks[bplClass.Namespace].Add(node);
}
// content frame
if (ContentBounds != null) {
ContentBounds.SizeChanged -= _onContentSizeChanged;
}
ContentBounds = new Rectangle();
ContentBounds.SizeChanged += _onContentSizeChanged;
Children.Add(ContentBounds);
IsEmpty = (Blocks.Count == 0 || Nodes.Count == 0);
_isFirstLayout = true;
}
private void _onCurrentClassChanged(object sender, EventArgs e) {
if (_currentNode != null) {
_currentNode.IsCurrentNode = false;
_currentNode = null;
}
var currentClass = Explorer.Shell.CurrentClass;
if (currentClass != null && Nodes != null) {
_currentNode = Nodes.TryGet(currentClass);
if (_currentNode != null) {
_currentNode.IsCurrentNode = true;
}
}
}
// adds a node to this block
internal void Add(DiagramNode node) {
_nodes.Add(node);
node.Block = this;
}