private void DispatchDiagramChangeEvent(DiagramEventBase diagramEvent)
{
switch (diagramEvent)
{
case DiagramNodeAddedEvent diagramNodeAddedEvent:
AddNode(diagramNodeAddedEvent.DiagramNode);
break;
case DiagramNodeRemovedEvent diagramNodeRemovedEvent:
RemoveNode(diagramNodeRemovedEvent.DiagramNode);
break;
case DiagramConnectorAddedEvent diagramConnectorAddedEvent:
AddConnector(diagramConnectorAddedEvent.DiagramConnector);
break;
case DiagramConnectorRemovedEvent diagramConnectorRemovedEvent:
RemoveConnector(diagramConnectorRemovedEvent.DiagramConnector);
break;
case DiagramClearedEvent _:
ClearViewport();
break;
}
}
private void OnDiagramChanged(DiagramEventBase diagramEvent)
{
if (diagramEvent is DiagramNodeAddedEvent diagramNodeAddedEvent)
{
RemoveModelNode(diagramNodeAddedEvent.NewNode.Id);
}
}
private void OnDiagramChanged(DiagramEventBase diagramEvent)
{
switch (diagramEvent)
{
case DiagramNodeAddedEvent diagramNodeAddedEvent:
_incrementalLayoutEngine.EnqueueDiagramAction(new AddDiagramNodeAction(diagramNodeAddedEvent.NewNode));
break;
case DiagramConnectorAddedEvent diagramConnectorAddedEvent:
_incrementalLayoutEngine.EnqueueDiagramAction(new AddDiagramConnectorAction(diagramConnectorAddedEvent.NewConnector));
break;
case DiagramNodeSizeChangedEvent diagramNodeSizeChangedEvent:
var diagramNode = diagramNodeSizeChangedEvent.NewNode;
_incrementalLayoutEngine.EnqueueDiagramAction(new ResizeDiagramNodeAction(diagramNode, diagramNode.Size));
break;
case DiagramNodeRemovedEvent diagramNodeRemovedEvent:
_incrementalLayoutEngine.EnqueueDiagramAction(new RemoveDiagramNodeAction(diagramNodeRemovedEvent.OldNode));
break;
case DiagramConnectorRemovedEvent diagramConnectorRemovedEvent:
_incrementalLayoutEngine.EnqueueDiagramAction(new RemoveDiagramConnectorAction(diagramConnectorRemovedEvent.OldConnector));
break;
case DiagramClearedEvent _:
_incrementalLayoutEngine.EnqueueDiagramAction(new ClearDiagramAction());
break;
}
}
private void OnDiagramChanged(DiagramEventBase diagramEvent)
{
switch (diagramEvent)
{
case DiagramNodeAddedEvent diagramNodeAddedEvent:
var addedDiagramNode = diagramNodeAddedEvent.DiagramNode;
var addDiagramNodeAction = new AddDiagramNodeAction(addedDiagramNode);
if (addedDiagramNode is IContainerDiagramNode containerDiagramNode)
{
var incrementalLayoutEngine = CreateLayoutEngine(DiagramService);
_layoutEnginesPerNodes.Add(containerDiagramNode.Id, incrementalLayoutEngine);
}
var layoutEngineForAddedDiagramNode = GetLayoutEngine(addedDiagramNode);
layoutEngineForAddedDiagramNode.EnqueueDiagramAction(addDiagramNodeAction);
_modelNodeToContainingLayoutEngine.Add(addedDiagramNode.Id, layoutEngineForAddedDiagramNode);
break;
case DiagramConnectorAddedEvent diagramConnectorAddedEvent:
var addedDiagramConnector = diagramConnectorAddedEvent.DiagramConnector;
var addDiagramConnectorAction = new AddDiagramConnectorAction(addedDiagramConnector);
var layoutEngineForAddedDiagramConnector = GetLayoutEngine(addedDiagramConnector);
if (layoutEngineForAddedDiagramConnector != null)
{
layoutEngineForAddedDiagramConnector.EnqueueDiagramAction(addDiagramConnectorAction);
_modelRelationshipToContainingLayoutEngine.Add(addedDiagramConnector.Id, layoutEngineForAddedDiagramConnector);
}
break;
case DiagramNodeSizeChangedEvent diagramNodeSizeChangedEvent:
var resizedDiagramNode = diagramNodeSizeChangedEvent.DiagramNode;
var resizeDiagramNodeAction = new ResizeDiagramNodeAction(resizedDiagramNode, resizedDiagramNode.Size);
_modelNodeToContainingLayoutEngine[resizedDiagramNode.Id].EnqueueDiagramAction(resizeDiagramNodeAction);
break;
case DiagramNodeRemovedEvent diagramNodeRemovedEvent:
var removedDiagramNode = diagramNodeRemovedEvent.DiagramNode;
var removeDiagramNodeAction = new RemoveDiagramNodeAction(removedDiagramNode);
_modelNodeToContainingLayoutEngine[removedDiagramNode.Id].EnqueueDiagramAction(removeDiagramNodeAction);
break;
case DiagramConnectorRemovedEvent diagramConnectorRemovedEvent:
var removedDiagramConnector = diagramConnectorRemovedEvent.DiagramConnector;
var removeDiagramConnectorAction = new RemoveDiagramConnectorAction(removedDiagramConnector);
_modelRelationshipToContainingLayoutEngine[removedDiagramConnector.Id].EnqueueDiagramAction(removeDiagramConnectorAction);
break;
case DiagramClearedEvent _:
foreach (var incrementalLayoutEngine in _layoutEnginesPerNodes.Values)
{
incrementalLayoutEngine.Dispose();
}
_layoutEnginesPerNodes.Clear();
_rootLayoutEngine.EnqueueDiagramAction(new ClearDiagramAction());
break;
}
}
private void DispatchDiagramChangeEvent(DiagramEventBase diagramEvent)
{
switch (diagramEvent)
{
case DiagramNodeAddedEvent nodeAddedEvent:
AddNode(nodeAddedEvent.NewNode, nodeAddedEvent.NewNode.ParentNodeId.ToNullable());
break;
case DiagramNodeRemovedEvent nodeRemovedEvent:
RemoveNode(nodeRemovedEvent.OldNode);
break;
case DiagramConnectorAddedEvent connectorAddedEvent:
AddConnector(connectorAddedEvent.NewConnector);
break;
case DiagramConnectorRemovedEvent connectorRemovedEvent:
RemoveConnector(connectorRemovedEvent.OldConnector);
break;
case DiagramClearedEvent _:
ClearViewport();
break;
}
}
private void OnDiagramChanged(DiagramEventBase diagramEvent)
{
var model = ModelService.Model;
var diagram = diagramEvent.NewDiagram;
switch (diagramEvent)
{
case DiagramNodeAddedEvent diagramNodeAddedEvent:
var modelNode = diagramNodeAddedEvent.NewNode.ModelNode;
ShowModelRelationshipsIfBothEndsAreVisible(modelNode, model, diagram);
break;
case DiagramNodeRemovedEvent _:
// TODO: optimize: should check only surrounding nodes of the deleted one (not all in diagram)
foreach (var diagramNode in diagram.Nodes)
{
ShowModelRelationshipsIfBothEndsAreVisible(diagramNode.ModelNode, model, diagram);
}
break;
case DiagramConnectorAddedEvent _:
HideRedundantConnectors(diagram);
break;
// DiagramConnectorRemovedEvent is not handled
// because that would put back removed connectors immediately
// (because nodes are removed after connectors)
}
}
private void OnDiagramChanged(DiagramEventBase diagramEvent)
{
if (diagramEvent is DiagramConnectorRouteChangedEvent diagramConnectorRouteChangedEvent &&
DiagramConnectorIdEqualityComparer.Instance.Equals(diagramConnectorRouteChangedEvent.NewConnector, DiagramConnector))
{
DiagramShape = diagramConnectorRouteChangedEvent.NewConnector;
RoutePoints = diagramConnectorRouteChangedEvent.NewConnector.Route.ToWpf();
}
}
private void DispatchDiagramEvent(DiagramEventBase diagramEvent)
{
switch (diagramEvent)
{
case DiagramNodeRectChangedEvent diagramNodeRectChangedEvent:
FollowDiagramNode(diagramNodeRectChangedEvent.NewNode);
break;
}
}
protected virtual void OnDiagramChanged(DiagramEventBase diagramEvent)
{
if (diagramEvent is DiagramNodeChangedEventBase diagramNodeChangedEvent &&
DiagramNodeIdEqualityComparer.Instance.Equals(diagramNodeChangedEvent.DiagramNode, DiagramNode))
{
DiagramShape = diagramNodeChangedEvent.DiagramNode;
PopulateFromDiagramNode(diagramNodeChangedEvent.DiagramNode);
}
}
private void OnDiagramChanged(DiagramEventBase diagramEvent)
{
switch (diagramEvent)
{
case DiagramNodeAddedEvent diagramNodeAddedEvent:
RoslynModelService.ExtendModelWithRelatedNodes(diagramNodeAddedEvent.DiagramNode.ModelNode, recursive: false);
break;
}
}
private void OnDiagramChangedAsync(DiagramEventBase diagramEvent)
{
switch (diagramEvent)
{
case DiagramNodeAddedEvent diagramNodeAddedEvent:
// It's a fire-and-forget async call, no need to await.
var task = RoslynModelService.ExtendModelWithRelatedNodesAsync(diagramNodeAddedEvent.DiagramNode.ModelNode, recursive: false);
break;
}
}
private void OnDiagramChanged(DiagramEventBase diagramEvent)
{
lock (_diagramEventQueue)
{
Debug.WriteLine($"Event arrived: {diagramEvent}");
_diagramEventQueue.Enqueue(diagramEvent);
}
_diagramEventArrivedEvent.Set();
}
private void OnDiagramChanged(DiagramEventBase diagramEvent)
{
_lastDiagram = diagramEvent.NewDiagram;
if (diagramEvent is DiagramClearedEvent)
{
HideAllWidgets();
}
UpdateDiagramContentRect(diagramEvent.NewDiagram);
}
private async Task OnDiagramChangedAsync(DiagramEventBase diagramEvent)
{
switch (diagramEvent)
{
case DiagramNodeAddedEvent diagramNodeAddedEvent:
// It's a fire-and-forget async call, no need to await.
// ReSharper disable once UnusedVariable
await RoslynModelService.ExtendModelWithRelatedNodesAsync(diagramNodeAddedEvent.DiagramNode.ModelNode, recursive : false);
break;
}
}
private void OnDiagramChanged([NotNull] DiagramEventBase diagramEvent)
{
switch (diagramEvent)
{
case DiagramNodeRectChangedEvent _:
case DiagramConnectorRouteChangedEvent _:
return;
}
var diagram = diagramEvent.NewDiagram;
var diagramLayoutInfo = _layoutAlgorithm.Calculate(diagram);
DiagramService.ApplyLayout(diagramLayoutInfo);
}
private void DispatchDiagramEvent(DiagramEventBase diagramEvent)
{
switch (diagramEvent)
{
case DiagramNodeSizeChangedEvent diagramNodeSizeChangedEvent:
FollowDiagramNode(diagramNodeSizeChangedEvent.DiagramNode);
break;
case DiagramNodePositionChangedEvent diagramNodePositionChangedEvent:
FollowDiagramNode(diagramNodePositionChangedEvent.DiagramNode);
break;
}
}
private DiagramEventBase GetLastEventFromQueue()
{
DiagramEventBase lastEvent = null;
lock (_diagramEventQueue)
{
while (_diagramEventQueue.Any())
{
lastEvent = _diagramEventQueue.Dequeue();
}
}
return(lastEvent);
}
private void OnDiagramChanged(DiagramEventBase diagramEvent)
{
_hostUiServices.Run(async() => await OnDiagramChangedAsync(diagramEvent));
}
private void OnDiagramChanged(DiagramEventBase diagramEvent)
{
_lastDiagram = diagramEvent.NewDiagram;
UpdateEnabledState();
}
private void OnDiagramChanged(DiagramEventBase diagramEvent)
{
_diagramContentRect = diagramEvent.NewDiagram.Rect.ToWpf();
}
private void OnDiagramChanged(DiagramEventBase diagramEvent)
{
EnsureUiThread(() => DispatchDiagramEvent(diagramEvent));
}
private void OnDiagramChanged(DiagramEventBase diagramEvent)
{
_lastDiagram = diagramEvent.NewDiagram;
UpdateVisibility();
}
private void OnDiagramChanged(DiagramEventBase diagramEvent)
{
// 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(diagramEvent));
}