private void OnDiagramChanged(DiagramEvent diagramEvent)
{
var diagram = diagramEvent.NewDiagram;
var diagramLayoutInfo = _layoutAlgorithm.Calculate(diagram);
DiagramService.ApplyLayout(diagramLayoutInfo);
}
private void OnDiagramChanged(DiagramEvent diagramEvent)
{
foreach (var shapeEvent in diagramEvent.ShapeEvents)
{
ProcessShapeEvent(shapeEvent);
}
}
private void OnDiagramChanged(DiagramEvent diagramEvent)
{
foreach (var change in diagramEvent.ShapeEvents)
{
EnsureUiThread(() => DispatchDiagramEvent(change));
}
}
public DiagramEvent UpdateModel(IModel newModel)
{
// TODO: remove all shapes whose model ID does not exist in the new model.
var newDiagram = CreateInstance(newModel, _nodes, _connectors);
return(DiagramEvent.Create(newDiagram));
}
private void OnDiagramChanged(DiagramEvent @event)
{
foreach (var change in @event.ShapeEvents)
{
ProcessDiagramChange(change);
}
}
public DiagramEvent Clear()
{
var newDiagram = Create(Model, _connectorTypeResolver);
// Shall we raise node and connector removed events ?
return(DiagramEvent.Create(newDiagram));
}
protected override bool PublishDiagramEvent(DiagramEvent diagramEvent, object args)
{
if (diagramEvent == DiagramEvent.SelectionBoundsChanged)
{
var mainContainer = this.SelectedItem as MainContainerShapeBase;
UpdateHandlers(mainContainer);
}
return base.PublishDiagramEvent(diagramEvent, args);
}
private void OnDiagramChanged(DiagramEvent @event)
{
var diagram = @event.NewDiagram;
var model = diagram.Model;
foreach (var change in @event.ShapeEvents)
{
ProcessDiagramChange(change, model, diagram);
}
}
public DiagramEvent Clear()
{
var itemEvents = Connectors.Select(i => new DiagramConnectorRemovedEvent(i))
.OfType <DiagramShapeEventBase>()
.Concat(Nodes.Select(i => new DiagramNodeRemovedEvent(i)));
var newDiagram = Create(Model, _connectorTypeResolver);
return(DiagramEvent.Create(newDiagram, itemEvents));
}
private DiagramEvent CreateDiagramEvent(DiagramOperationResult diagramOperationResult)
{
if (!diagramOperationResult.Events.Any())
{
return(DiagramEvent.None(this));
}
var newDiagram = CreateInstance(Model, diagramOperationResult.Nodes, diagramOperationResult.Connectors);
return(new DiagramEvent(newDiagram, diagramOperationResult.Events));
}
private void OnDiagramChanged(DiagramEvent @event)
{
_lastDiagram = @event.NewDiagram;
if (_lastDiagram.IsEmpty)
{
HideAllWidgets();
}
UpdateDiagramContentRect(@event.NewDiagram);
}
public DiagramEvent ApplyLayout(GroupLayoutInfo diagramLayout)
{
var events = new List <DiagramShapeEventBase>();
var updatedNodes = new Dictionary <ModelNodeId, IDiagramNode>();
var updatedConnectors = new Dictionary <ModelRelationshipId, IDiagramConnector>();
ApplyLayoutRecursive(diagramLayout, events, updatedNodes, updatedConnectors);
var newDiagram = CreateInstance(Model, _nodes.SetItems(updatedNodes), _connectors.SetItems(updatedConnectors));
return(DiagramEvent.Create(newDiagram, events));
}
private void OnDiagramChanged(DiagramEvent diagramEvent)
{
if (diagramEvent.ShapeEvents.All(i => !IsLayoutTriggeringChange(i)))
{
return;
}
var diagram = diagramEvent.NewDiagram;
var diagramLayoutInfo = _layoutAlgorithm.Calculate(diagram);
DiagramService.ApplyLayout(diagramLayoutInfo);
}
private void OnDiagramChanged(DiagramEvent @event)
{
if (@event.NewDiagram.IsEmpty)
{
ClearViewport();
return;
}
foreach (var diagramChange in @event.ShapeEvents)
{
// All diagram-induced view model manipulation must occur on the UI thread to avoid certain race conditions.
// (E.g. avoid the case when creating a connector view model precedes the creation of its source and target node view models.)
EnsureUiThread(() => DispatchDiagramChangeEvent(diagramChange));
}
}
public DiagramEvent UpdateConnectorRoute(ModelRelationshipId relationshipId, Route newRoute)
{
var maybeDiagramConnector = TryGetConnector(relationshipId);
if (!maybeDiagramConnector.HasValue)
{
throw new InvalidOperationException($"Connector {relationshipId} does not exist.");
}
var oldConnector = maybeDiagramConnector.Value;
var newConnector = oldConnector.WithRoute(newRoute);
var newDiagram = CreateInstance(Model, _nodes, _connectors.SetItem(relationshipId, newConnector));
return(DiagramEvent.Create(newDiagram, new DiagramConnectorRouteChangedEvent(oldConnector, newConnector)));
}
private async Task OnDiagramChangedAsync(DiagramEvent diagramEvent)
{
foreach (var shapeEvent in diagramEvent.ShapeEvents)
{
switch (shapeEvent)
{
case DiagramNodeAddedEvent diagramNodeAddedEvent:
await ExtendModelNodeAsync(diagramNodeAddedEvent.NewNode.ModelNode);
break;
case DiagramNodeChangedEvent diagramNodeChangedEvent when diagramNodeChangedEvent.ChangedMember == DiagramNodeMember.ModelNode:
await ExtendModelNodeAsync(diagramNodeChangedEvent.NewNode.ModelNode);
break;
}
}
}
private DiagramEvent UpdateNodeCore(
ModelNodeId nodeId,
[NotNull] Func <IDiagramNode, IDiagramNode> nodeMutatorFunc,
[NotNull] Func <IDiagramNode, IDiagramNode, DiagramNodeChangedEvent> nodeChangedEventFunc)
{
var maybeDiagramNode = TryGetNode(nodeId);
if (!maybeDiagramNode.HasValue)
{
return(DiagramEvent.None(this));
}
var oldNode = maybeDiagramNode.Value;
var newNode = nodeMutatorFunc(oldNode);
var newDiagram = CreateInstance(Model, _nodes.SetItem(newNode.Id, newNode), _connectors);
var diagramNodeChangedEvent = nodeChangedEventFunc(oldNode, newNode);
return(DiagramEvent.Create(newDiagram, diagramNodeChangedEvent));
}
private DiagramEvent UpdateNode(
ModelNodeId nodeId,
[NotNull] Func <IDiagramNode, IDiagramNode> nodeMutatorFunc,
[NotNull] Func <IDiagramNode, IDiagramNode, DiagramNodeChangedEvent> nodeChangedEventFunc)
{
var maybeDiagramNode = TryGetNode(nodeId);
if (!maybeDiagramNode.HasValue)
{
throw new InvalidOperationException($"Trying to update {nodeId} but it does not exist.");
}
var oldNode = maybeDiagramNode.Value;
var newNode = nodeMutatorFunc(oldNode);
var newDiagram = CreateInstance(Model, _nodes.SetItem(newNode.Id, newNode), _connectors);
var diagramNodeChangedEvent = nodeChangedEventFunc(oldNode, newNode);
return(DiagramEvent.Create(newDiagram, diagramNodeChangedEvent));
}
//public IEnumerable<IDiagramNode> GetAdjacentNodes(ModelNodeId id, DirectedModelRelationshipType? directedModelRelationshipType = null)
//{
// IEnumerable<IDiagramNode> result;
// if (directedModelRelationshipType != null)
// {
// result = _allShapesGraph.GetAdjacentVertices(
// id,
// directedModelRelationshipType.Value.Direction,
// e => e.ModelRelationship.Stereotype == directedModelRelationshipType.Value.Stereotype);
// }
// else
// {
// result = _allShapesGraph.GetAdjacentVertices(id, EdgeDirection.In)
// .Union(_allShapesGraph.GetAdjacentVertices(id, EdgeDirection.Out));
// }
// return result;
//}
public DiagramEvent AddNode(ModelNodeId nodeId, ModelNodeId?parentNodeId = null)
{
var maybeDiagramNode = TryGetNode(nodeId);
if (maybeDiagramNode.HasValue)
{
return(DiagramEvent.None(this));
}
var maybeModelNode = Model.TryGetNode(nodeId);
if (!maybeModelNode.HasValue)
{
throw new Exception($"Node {nodeId} not found in model.");
}
var newNode = CreateNode(maybeModelNode.Value).WithParentNodeId(parentNodeId);
var newDiagram = CreateInstance(Model, _nodes.Add(newNode.Id, newNode), _connectors);
return(DiagramEvent.Create(newDiagram, new DiagramNodeAddedEvent(newNode)));
}
public DiagramEvent AddConnector(ModelRelationshipId relationshipId)
{
var maybeConnector = TryGetConnector(relationshipId);
if (maybeConnector.HasValue)
{
return(DiagramEvent.None(this));
}
var maybeRelationship = Model.TryGetRelationship(relationshipId);
if (!maybeRelationship.HasValue)
{
throw new InvalidOperationException($"Relationship {relationshipId} does not exist.");
}
var newConnector = CreateConnector(maybeRelationship.Value);
var newDiagram = CreateInstance(Model, _nodes, _connectors.Add(newConnector.Id, newConnector));
return(DiagramEvent.Create(newDiagram, new DiagramConnectorAddedEvent(newConnector)));
}
private void OnDiagramChanged(DiagramEvent @event)
{
_diagramContentRect = @event.NewDiagram.Rect.ToWpf();
}
private void OnDiagramChanged(DiagramEvent @event)
{
_lastDiagram = @event.NewDiagram;
UpdateEnabledState();
}
private void OnDiagramChanged(DiagramEvent diagramEvent)
{
_hostUiServices.Run(async() => await OnDiagramChangedAsync(diagramEvent));
}
private void OnDiagramChanged(DiagramEvent @event)
{
_lastDiagram = @event.NewDiagram;
UpdateVisibility();
}
/// <remarks>
/// When the model (backing the diagram) is updated there can be an interim time
/// when there are diagram shapes that does not exist in the model any more.
/// This is fine because those model events will eventually arrive that remove such shapes.
/// </remarks>
public DiagramEvent UpdateModel(IModel newModel)
{
var newDiagram = CreateInstance(newModel, _nodes, _connectors);
return(DiagramEvent.Create(newDiagram));
}