/// <summary>
/// This method is called by code that intends to start a graph update.
/// This method is called on the main thread where node collection in a
/// WorkspaceModel can be safely accessed.
/// </summary>
/// <param name="controller">Reference to an instance of EngineController
/// to assist in generating GraphSyncData object for the given set of nodes.
/// </param>
/// <param name="workspace">Reference to the WorkspaceModel from which a
/// set of updated nodes is computed. The EngineController generates the
/// resulting GraphSyncData from this list of updated nodes.</param>
/// <returns>Returns true if there is any GraphSyncData, or false otherwise
/// (in which case there will be no need to schedule UpdateGraphAsyncTask
/// for execution).</returns>
///
internal bool Initialize(EngineController controller, WorkspaceModel workspace)
{
try
{
engineController = controller;
TargetedWorkspace = workspace;
ModifiedNodes = ComputeModifiedNodes(workspace);
graphSyncData = engineController.ComputeSyncData(workspace.Nodes, ModifiedNodes, verboseLogging);
if (graphSyncData == null)
return false;
// We clear dirty flags before executing the task. If we clear
// flags after the execution of task, for example in
// AsyncTask.Completed or in HandleTaskCompletionCore(), as both
// are executed in the other thread, although some nodes are
// modified and we request graph execution, but just before
// computing sync data, the task completion handler jumps in
// and clear dirty flags. Now graph sync data will be null and
// graph is in wrong state.
foreach (var nodeGuid in graphSyncData.NodeIDs)
{
var node = workspace.Nodes.FirstOrDefault(n => n.GUID.Equals(nodeGuid));
if (node != null)
node.ClearDirtyFlag();
}
return true;
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine("UpgradeGraphAsyncTask saw: " + e.ToString());
return false;
}
}
/// <summary>
/// This method is called by codes that intent to start a graph update.
/// This method is called on the main thread where node collection in a
/// WorkspaceModel can be safely accessed.
/// </summary>
/// <param name="controller">Reference to an instance of EngineController
/// to assist in generating GraphSyncData object for the given set of nodes.
/// </param>
/// <param name="workspace">Reference to the WorkspaceModel from which a
/// set of updated nodes is computed. The EngineController generates the
/// resulting GraphSyncData from this list of updated nodes.</param>
/// <returns>Returns the list of node id's that will be executed in the next run
/// for execution).</returns>
internal List<Guid> Initialize(EngineController controller, WorkspaceModel workspace)
{
try
{
engineController = controller;
TargetedWorkspace = workspace;
modifiedNodes = ComputeModifiedNodes(workspace);
previewGraphData = engineController.PreviewGraphSyncData(modifiedNodes,verboseLogging);
return previewGraphData;
}
catch (Exception e)
{
return null;
}
}
private void listBoxErrorNodes_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (sender == null)
{
return;
}
ListBox lb = sender as ListBox;
if (lb.SelectedItem == null)
{
return;
}
var selection = lb.SelectedItem;
ModelBase modelBase = selection.GetType().GetProperty("theNode").GetValue(selection) as ModelBase;
ViewLoadedParams viewLoadedParams = selection.GetType().GetProperty("theWSModel").GetValue(selection) as ViewLoadedParams;
string guid = selection.GetType().GetProperty("guid").GetValue(selection) as string;
foreach (NodeModel node in viewLoadedParams.CurrentWorkspaceModel.Nodes)
{
node.Deselect();
node.IsSelected = false;
}
Dynamo.Graph.Workspaces.WorkspaceModel ws = viewLoadedParams.CurrentWorkspaceModel as WorkspaceModel;
foreach (AnnotationModel group in ws.Annotations)
{
group.Deselect();
group.IsSelected = false;
}
foreach (NoteModel note in ws.Notes)
{
note.Deselect();
note.IsSelected = false;
}
var VM = viewLoadedParams.DynamoWindow.DataContext as DynamoViewModel;
VM.CurrentSpaceViewModel.ResetFitViewToggleCommand.Execute(null);
VM.AddToSelectionCommand.Execute(modelBase);
VM.FitViewCommand.Execute(null);
}
// Helper function that builds string of error nodes
public List <groupData> getGroupTypes()
{
List <groupData> output = new List <groupData>();
List <groupData> groups = new List <groupData>();
Dynamo.Graph.Workspaces.WorkspaceModel ws = readyParams.CurrentWorkspaceModel as WorkspaceModel;
foreach (AnnotationModel group in ws.Annotations)
{
if (group.AnnotationText == "")
{
groups.Add(new groupData()
{
name = "*Group has no Title*",
guid = group.GUID.ToString(),
theGroup = group,
theWSModel = readyParams
});
}
else
{
groups.Add(new groupData()
{
name = group.AnnotationText,
guid = group.GUID.ToString(),
theGroup = group,
theWSModel = readyParams
});
}
}
foreach (groupData group in groups.OrderByDescending(x => x.name))
{
output.Add(group);
}
output.Reverse();
return(output);
}
private static IEnumerable<NodeModel> ComputeModifiedNodes(WorkspaceModel workspace)
{
return workspace.Nodes; // TODO(Ben): Implement dirty node subsetting.
}
/// <summary>
/// This method is called to gather all the nodes whose cached values
/// should be updated after graph update is done. This set of nodes
/// includes nodes that are explicitly marked as requiring update, as
/// well as all its downstream nodes.
/// </summary>
/// <param name="workspace">The WorkspaceModel from which nodes are to
/// be retrieved.</param>
/// <returns>Returns a list of NodeModel whose cached values are to be
/// updated after the evaluation.</returns>
///
private static IEnumerable<NodeModel> ComputeModifiedNodes(WorkspaceModel workspace)
{
var nodesToUpdate = new List<NodeModel>();
//Get those modified nodes that are not frozen
foreach (var node in workspace.Nodes.Where(n => n.IsModified && !n.IsFrozen))
{
GetDownstreamNodes(node, nodesToUpdate);
}
return nodesToUpdate;
}
/// <summary>
/// Save a Workspace to json.
/// </summary>
/// <returns>A string representing the serialized WorkspaceModel.</returns>
public static string SaveWorkspaceToJson(WorkspaceModel workspace, LibraryServices libraryServices,
EngineController engineController, DynamoScheduler scheduler, NodeFactory factory,
bool isTestMode, bool verboseLogging, CustomNodeManager manager)
{
var settings = new JsonSerializerSettings
{
Error = (sender, args) =>
{
args.ErrorContext.Handled = true;
Console.WriteLine(args.ErrorContext.Error);
},
ReferenceLoopHandling = ReferenceLoopHandling.Ignore,
TypeNameHandling = TypeNameHandling.Auto,
Formatting = Formatting.Indented,
Converters = new List<JsonConverter>{
new ConnectorConverter(),
new AnnotationConverter(),
new WorkspaceConverter(engineController, scheduler, factory,
isTestMode, verboseLogging),
new NodeModelConverter(manager, libraryServices),
},
ReferenceResolverProvider = () => { return new IdReferenceResolver(); }
};
var json = JsonConvert.SerializeObject(workspace, settings);
var result = ReplaceTypeDeclarations(json);
return result;
}
/// <summary>
/// Returns the backup file path for a workspace
/// </summary>
/// <param name="workspace"></param>
/// <returns></returns>
internal string GetBackupFilePath(WorkspaceModel workspace)
{
string fileName;
if (string.IsNullOrEmpty(workspace.FileName))
{
if (workspace is HomeWorkspaceModel)
{
fileName = Configurations.BackupFileNamePrefix + ".DYN";
}
else
{
fileName = workspace.Name + ".DYF";
}
}
else
{
fileName = Path.GetFileName(workspace.FileName);
}
return Path.Combine(BackupDirectory, fileName);
}
/// <summary>
/// <param name="workspace">A <see cref="WorkspaceModel"/>.</param>
/// This method extracts all models from the workspace and puts them
/// into the combined graph object, LayoutSubgraphs.First()
/// <param name="isGroupLayout">True if all the selected models are groups.</param>
/// <param name="layoutSubgraphs"></param>
/// <param name="subgraphClusters"></param>
/// </summary>
private static void GenerateCombinedGraph(this WorkspaceModel workspace, bool isGroupLayout,
out List <GraphLayout.Graph> layoutSubgraphs, out List <List <GraphLayout.Node> > subgraphClusters)
{
layoutSubgraphs = new List <GraphLayout.Graph>
{
new GraphLayout.Graph()
};
var combinedGraph = layoutSubgraphs.First();
subgraphClusters = new List <List <GraphLayout.Node> >();
if (!isGroupLayout)
{
foreach (AnnotationModel group in workspace.Annotations)
{
// Treat a group as a graph layout node/vertex
combinedGraph.AddNode(group.GUID, group.Width, group.Height, group.X, group.Y,
group.IsSelected || DynamoSelection.Instance.Selection.Count == 0);
}
}
foreach (NodeModel node in workspace.Nodes)
{
if (!isGroupLayout)
{
AnnotationModel group = workspace.Annotations.Where(
g => g.Nodes.Contains(node)).ToList().FirstOrDefault();
// Do not process nodes within groups
if (group == null)
{
combinedGraph.AddNode(node.GUID, node.Width, node.Height, node.X, node.Y,
node.IsSelected || DynamoSelection.Instance.Selection.Count == 0);
}
}
else
{
// Process all nodes inside the selection
combinedGraph.AddNode(node.GUID, node.Width, node.Height, node.X, node.Y,
node.IsSelected || DynamoSelection.Instance.Selection.Count == 0);
}
}
///Adding all connectorPins (belonging to all connectors) as graph.nodes to the combined graph.
foreach (ConnectorModel edge in workspace.Connectors)
{
foreach (var pin in edge.ConnectorPinModels)
{
combinedGraph.AddNode(pin.GUID,
pin.Width,
pin.Height,
pin.CenterX,
pin.CenterY,
pin.IsSelected || DynamoSelection.Instance.Selection.Count == 0);
}
}
foreach (ConnectorModel edge in workspace.Connectors)
{
if (!isGroupLayout)
{
AnnotationModel startGroup = null, endGroup = null;
startGroup = workspace.Annotations.Where(
g => g.Nodes.Contains(edge.Start.Owner)).ToList().FirstOrDefault();
endGroup = workspace.Annotations.Where(
g => g.Nodes.Contains(edge.End.Owner)).ToList().FirstOrDefault();
// Treat a group as a node, but do not process edges within a group
if (startGroup == null || endGroup == null || startGroup != endGroup)
{
var startGuid = startGroup == null ? edge.Start.Owner.GUID : startGroup.GUID;
var endGuid = endGroup == null ? edge.End.Owner.GUID : endGroup.GUID;
AddConnectorEdgesIncludingPinEdges(combinedGraph, edge, startGuid, endGuid);
}
}
else
{
AddConnectorEdgesIncludingPinEdges(combinedGraph, edge);
}
}
foreach (NoteModel note in workspace.Notes)
{
AnnotationModel group = workspace.Annotations.Where(
g => g.Nodes.Contains(note)).ToList().FirstOrDefault();
GraphLayout.Node nd = null;
if (!isGroupLayout || group == null)
{
// If note is not part of a group, link to the nearest node in the graph
nd = combinedGraph.Nodes.OrderBy(node =>
Math.Pow(node.X + node.Width / 2 - note.X - note.Width / 2, 2) +
Math.Pow(node.Y + node.Height / 2 - note.Y - note.Height / 2, 2)).FirstOrDefault();
}
else
{
// If note is part of a group, link to the nearest node in the group
NodeModel ndm = group.Nodes.OfType <NodeModel>().OrderBy(node =>
Math.Pow(node.X + node.Width / 2 - note.X - note.Width / 2, 2) +
Math.Pow(node.Y + node.Height / 2 - note.Y - note.Height / 2, 2)).FirstOrDefault();
// Skip processing the group if there is no node in the group
if (ndm == null)
{
continue;
}
// If the nearest point is a node model
nd = combinedGraph.FindNode(ndm.GUID);
// If the nearest point is a group model
nd = nd ?? combinedGraph.FindNode(group.GUID);
}
// Otherwise, leave the note unchanged
if (nd != null)
{
nd.LinkNote(note, note.Width, note.Height);
}
}
if (!isGroupLayout)
{
// Add all nodes to one big cluster
List <GraphLayout.Node> bigcluster = new List <GraphLayout.Node>();
bigcluster.AddRange(combinedGraph.Nodes);
subgraphClusters.Add(bigcluster);
}
else
{
// Each group becomes one cluster
foreach (AnnotationModel group in DynamoSelection.Instance.Selection.OfType <AnnotationModel>())
{
List <GraphLayout.Node> cluster = new List <GraphLayout.Node>();
cluster.AddRange(group.Nodes.OfType <NodeModel>().Select(x => combinedGraph.FindNode(x.GUID)));
subgraphClusters.Add(cluster);
}
}
}
/// <summary>
/// This method pushes changes from the GraphLayout.Graph objects
/// back to the workspace models.
/// </summary>
private static void SaveLayoutGraph(this WorkspaceModel workspace, List <GraphLayout.Graph> layoutSubgraphs)
{
// Assign coordinates to nodes inside groups
foreach (var group in workspace.Annotations)
{
GraphLayout.Graph graph = layoutSubgraphs
.FirstOrDefault(g => g.FindNode(group.GUID) != null);
if (graph != null)
{
GraphLayout.Node n = graph.FindNode(group.GUID);
double deltaX = n.X - group.X;
double deltaY = n.Y - group.Y + graph.OffsetY;
foreach (var node in group.Nodes.OfType <NodeModel>())
{
node.X += deltaX;
node.Y += deltaY;
node.ReportPosition();
}
foreach (NoteModel note in n.LinkedNotes)
{
if (note.IsSelected || DynamoSelection.Instance.Selection.Count == 0)
{
note.X += deltaX;
note.Y += deltaY;
note.ReportPosition();
}
}
}
}
// Assign coordinates to nodes outside groups
foreach (var node in workspace.Nodes)
{
GraphLayout.Graph graph = layoutSubgraphs
.FirstOrDefault(g => g.FindNode(node.GUID) != null);
if (graph != null)
{
GraphLayout.Node n = graph.FindNode(node.GUID);
double offsetY = graph.OffsetY;
node.X = n.X;
node.Y = n.Y + n.NotesHeight + offsetY;
node.ReportPosition();
workspace.HasUnsavedChanges = true;
double noteOffset = -n.NotesHeight;
foreach (NoteModel note in n.LinkedNotes)
{
if (note.IsSelected || DynamoSelection.Instance.Selection.Count == 0)
{
note.X = node.X;
note.Y = node.Y + noteOffset;
noteOffset += note.Height + GraphLayout.Graph.VerticalNoteDistance;
note.ReportPosition();
}
}
}
}
// Assign coordinates to connectors outside of groups
foreach (var connector in workspace.Connectors)
{
foreach (var pin in connector.ConnectorPinModels)
{
GraphLayout.Graph graph = layoutSubgraphs
.FirstOrDefault(g => g.FindNode(pin.GUID) != null);
if (graph != null)
{
GraphLayout.Node n = graph.FindNode(pin.GUID);
pin.CenterX = n.X;
pin.CenterY = n.Y;
pin.ReportPosition();
workspace.HasUnsavedChanges = true;
}
}
}
}
