/// <summary>
/// Initialize loading from and saving to graphml-files.
/// </summary>
private void InitializeGraphML()
{
// initialize (de-)serialization for load/save commands
var graphmlHandler = new GraphMLIOHandler();
graphmlHandler.Parsed += (sender, e) => {
// after loading apply wrap node styles, node label models and port location models in rotatable decorators
var graph = graphControl.Graph;
foreach (var node in graph.Nodes.Where(node => !graph.IsGroupNode(node)))
{
if (!(node.Style is RotatableNodeStyleDecorator))
{
graph.SetStyle(node, new RotatableNodeStyleDecorator(node.Style));
}
foreach (var label in node.Labels.Where(label => !(label.LayoutParameter.Model is RotatableNodeLabelModelDecorator)))
{
graph.SetLabelLayoutParameter(label, new RotatableNodeLabelModelDecorator(label.LayoutParameter.Model).CreateWrappingParameter(label.LayoutParameter));
}
foreach (var port in node.Ports.Where(port => !(port.LocationParameter.Model is RotatablePortLocationModelDecorator)))
{
graph.SetPortLocationParameter(port, RotatablePortLocationModelDecorator.Instance.CreateWrappingParameter(port.LocationParameter));
}
}
};
graphControl.GraphMLIOHandler = graphmlHandler;
}
/// <summary>
/// Register input and output handlers that store the data in the mapper as GraphMLAttributes resp. can read them back.
/// </summary>
private void EnableDataPersistence()
{
// We get the IO handler that is used by the GraphControl for serialization and deserialization.
var ioh = graphControl.GraphMLIOHandler;
IMapperRegistry registry = manager.MasterGraph.MapperRegistry;
IMapper <INode, DateTime> dateMapper = registry.GetMapper <INode, DateTime>(DateTimeMapperKey);
if (dateMapper != null)
{
// The OutputHandler just stores the string value of the attribute
// We need to provide the symbolic name of the attribute in the GraphML file, the data source as an IMapper and the
// GraphML type of the attribute
ioh.AddOutputMapper(DateTimeMapperKey, null, dateMapper, delegate(object args, HandleSerializationEventArgs e) {
if (e.Item is DateTime)
{
e.Writer.WriteString(((DateTime)e.Item).ToString(CultureInfo.InvariantCulture));
}
e.Handled = true;
}, KeyType.String);
// To read back a DateTime value from a string GraphML attribute, we have to provide an additional (very simple...) callback method.
ioh.AddInputMapper((elem) => GraphMLIOHandler.MatchesName(elem, DateTimeMapperKey) && GraphMLIOHandler.MatchesType(elem, KeyType.String), dateMapper,
delegate(object args, HandleDeserializationEventArgs e) {
//The actual value is a text node that can be retrieved from the event
try {
DateTime dateTime = DateTime.Parse(e.XmlNode.ToString(), CultureInfo.InvariantCulture);
e.Result = dateTime;
} catch (Exception exception) {
Console.WriteLine(exception);
e.Result = DateTime.Now;
}
});
}
}
/// <summary>
/// Reads the graph from a file with given file name.
/// </summary>
virtual protected void ReadGraph(string filename)
{
GraphMLIOHandler ioh = new GraphMLIOHandler();
ioh.Read(GraphControl.Graph, new StreamReader(filename));
GraphControl.UpdateContentRect();
GraphControl.FitContent();
}
/// <summary>
/// Asynchronously loads a compressed graphmlz file.
/// </summary>
private static async Task <IGraph> LoadGraphMlz(string filepath)
{
return(await Task.Run(() => {
var graph = new DefaultGraph();
var ioh = new GraphMLIOHandler();
using (var stream = new GZipStream(File.OpenRead(filepath), CompressionMode.Decompress)) {
ioh.Read(graph, stream);
}
return graph;
}));
}
/// <summary>
/// Populates the palette with the graphs stored in the resources folder.
/// </summary>
private void PopulatePalette()
{
var ioHandler = new GraphMLIOHandler();
foreach (var file in Directory.GetFiles("Resources"))
{
var graph = new DefaultGraph();
ioHandler.Read(graph, file);
PaletteListBox.Items.Add(graph);
}
}
private void ReadSampleGraph()
{
string fileName = string.Format("Resources" + Path.DirectorySeparatorChar + "{0}.graphml", graphChooserBox.SelectedItem.ToString());
DictionaryMapper <IGraph, string> descriptionMapper = new DictionaryMapper <IGraph, string>();
graphControl.Graph.Clear();
var ioHandler = new GraphMLIOHandler();
ioHandler.AddRegistryInputMapper <INode, string>("Description");
ioHandler.AddRegistryInputMapper <INode, string>("ToolTip");
ioHandler.AddRegistryInputMapper <INode, string>("Url");
ioHandler.AddInputMapper <IGraph, string>("GraphDescription", descriptionMapper);
ioHandler.Read(graphControl.Graph, fileName);
graphDescriptionTextBlock.Text = descriptionMapper[graphControl.Graph.GetFoldingView().Manager.MasterGraph] ?? string.Empty;
graphControl.FitGraphBounds(new InsetsD(10));
}
/// <summary>
/// Called when the application has been loaded
/// </summary>
private void OnLoad(object sender, EventArgs e)
{
// show a notification because the multi-page layout takes some time
ShowLoadingIndicator(true);
InitializeCoreLayouts();
InitializeInputMode();
// load the original graph
modelGraph = new DefaultGraph();
GraphMLIOHandler ioHandler = new GraphMLIOHandler();
ioHandler.Read(modelGraph, "Resources/pop-artists-small.graphml");
// add the page bounds visual
pageBoundsVisualCreator = new PageBoundsVisualCreator();
graphControl.BackgroundGroup.AddChild(pageBoundsVisualCreator);
// calculate the multi-page layout
RunMultipageLayout();
}
/// <summary>
/// Populates the palette with the graphs stored in the resources folder.
/// </summary>
private void InitializePalette()
{
//Handle list item drawing
paletteListBox.DrawItem += OnDrawItem;
// register for the mouse down event to initiate the drag operation
paletteListBox.MouseDown += OnMouseDown;
// populate the palette
var ioHandler = new GraphMLIOHandler();
foreach (var file in Directory.GetFiles("Resources").Where(f => f.EndsWith("graphml")))
{
var graph = new DefaultGraph();
ioHandler.Read(graph, file);
paletteListBox.Items.Add(graph);
}
}
/// <summary>
/// Configures a <see cref="GraphMLIOHandler"/> instance to read GraphML files written by
/// previous versions of yFiles.NET.
/// </summary>
public static void ConfigureGraphMLCompatibility(GraphMLIOHandler handler)
{
// Register our three special namespaces containing MarkupExtensions that can then just be picked up by namespace and name
// and don't have to be mapped manually (see below).
// These mappings are akin to the assembly attributes at the top of this file.
handler.AddXamlNamespaceMapping(YfilesCommonMarkupNS20, typeof(CommonMarkup.StaticExtension));
handler.AddXamlNamespaceMapping(YfilesNetXamlNS10, typeof(NodeScaledPortLocationModelExtension));
handler.AddXamlNamespaceMapping(YfilesCommonNS20, typeof(Common.LabelExtension));
handler.AddXamlNamespaceMapping(FormsNS10, typeof(SolidBrushExtension));
// Provides a mapping between XML element names in specific yFiles.NET 2.5 namespaces
// to either their equivalent in the current library version, or to specially-written
// MarkupExtensions that surface the old API and map it to the correct instances in the new API.
var mappings = new Dictionary <XName, Type> {
// General graph stuff
{ XName.Get("Bend", YfilesCommonNS20), typeof(BendExtension) },
{ XName.Get("NodeViewState", YfilesCommonNS20), typeof(FolderNodeStateExtension) },
{ XName.Get("EdgeViewState", YfilesCommonNS20), typeof(FoldingEdgeStateExtension) },
{ XName.Get("GraphSettings", YfilesCommonNS20), typeof(GraphSettings) },
{ XName.Get("NodeDefaults", YfilesCommonNS20), typeof(NodeDefaults) },
{ XName.Get("EdgeDefaults", YfilesCommonNS20), typeof(EdgeDefaults) },
{ XName.Get("GraphMLReference", YfilesCommonNS20), typeof(GraphMLReferenceExtension) },
// Void styles
{ XName.Get("VoidPortStyle", YfilesCommonNS20), typeof(VoidPortStyle) },
{ XName.Get("VoidNodeStyle", YfilesCommonNS20), typeof(VoidNodeStyle) },
{ XName.Get("VoidEdgeStyle", YfilesCommonNS20), typeof(VoidEdgeStyle) },
{ XName.Get("VoidLabelStyle", YfilesCommonNS20), typeof(VoidLabelStyle) },
// Node styles
{ XName.Get("ShapeNodeStyle", YfilesNetXamlNS10), typeof(ShapeNodeStyle) },
{ XName.Get("BevelNodeStyle", YfilesNetXamlNS10), typeof(BevelNodeStyle) },
{ XName.Get("UriImageNodeStyle", YfilesNetXamlNS10), typeof(UriImageNodeStyleExtension) },
{ XName.Get("MemoryImageNodeStyle", YfilesNetXamlNS10), typeof(MemoryImageNodeStyle) },
{ XName.Get("Bitmap", YfilesNetXamlNS10), typeof(BitmapExtension) },
{ XName.Get("GeneralPathNodeStyle", YfilesNetXamlNS10), typeof(GeneralPathNodeStyle) },
{ XName.Get("GeneralPathMarkup", YfilesNetXamlNS10), typeof(GeneralPathExtension) },
{ XName.Get("MoveTo", YfilesNetXamlNS10), typeof(MoveTo) },
{ XName.Get("LineTo", YfilesNetXamlNS10), typeof(LineTo) },
{ XName.Get("QuadTo", YfilesNetXamlNS10), typeof(QuadTo) },
{ XName.Get("CubicTo", YfilesNetXamlNS10), typeof(CubicTo) },
{ XName.Get("Close", YfilesNetXamlNS10), typeof(Close) },
{ XName.Get("PanelNodeStyle", YfilesNetXamlNS10), typeof(PanelNodeStyle) },
{ XName.Get("ShinyPlateNodeStyle", YfilesNetXamlNS10), typeof(ShinyPlateNodeStyle) },
{ XName.Get("ShadowNodeStyleDecorator", YfilesNetXamlNS10), typeof(ShadowNodeStyleDecorator) },
{ XName.Get("CollapsibleNodeStyleDecorator", YfilesNetXamlNS10), typeof(CollapsibleNodeStyleDecorator) },
{ XName.Get("TableNodeStyle", YfilesNetXamlNS10), typeof(TableNodeStyle) },
// Port styles
{ XName.Get("NodeStylePortStyleAdapter", YfilesNetXamlNS10), typeof(NodeStylePortStyleAdapter) },
// Edge styles
{ XName.Get("PolylineEdgeStyle", YfilesNetXamlNS10), typeof(PolylineEdgeStyleExtension) },
{ XName.Get("ArcEdgeStyle", YfilesNetXamlNS10), typeof(ArcEdgeStyle) },
// Label styles
{ XName.Get("NodeStyleLabelStyleAdapter", YfilesNetXamlNS10), typeof(NodeStyleLabelStyleAdapter) },
// Auxiliary style classes
{ XName.Get("Arrow", YfilesNetXamlNS10), typeof(Arrow) },
{ XName.Get("DefaultArrow", YfilesNetXamlNS10), typeof(Arrows) },
{ XName.Get("Table", YfilesCommonNS20), typeof(TableExtension) },
{ XName.Get("Row", YfilesCommonNS20), typeof(Common.RowExtension) },
{ XName.Get("Column", YfilesCommonNS20), typeof(Common.ColumnExtension) },
// Label models and their parameters
{ XName.Get("FreeLabelModel", YfilesNetXamlNS10), typeof(FreeLabelModel) },
{ XName.Get("FixedLabelModelParameter", YfilesNetXamlNS10), typeof(FixedLabelModelParameterExtension) },
{ XName.Get("AnchoredLabelModelParameter", YfilesNetXamlNS10), typeof(AnchoredLabelModelParameterExtension) },
{ XName.Get("CompositeLabelModel", YfilesNetXamlNS10), typeof(CompositeLabelModel) },
{ XName.Get("CompositeLabelModelParameter", YfilesNetXamlNS10), typeof(CompositeLabelModelParameterExtension) },
{ XName.Get("GenericModel", YfilesNetXamlNS10), typeof(GenericLabelModelExtension) },
{ XName.Get("GenericLabelModelParameter", YfilesNetXamlNS10), typeof(GenericLabelModelParameterExtension) },
{ XName.Get("DescriptorWrapperLabelModel", YfilesNetXamlNS10), typeof(DescriptorWrapperLabelModel) },
{ XName.Get("DescriptorWrapperLabelModelParameter", YfilesNetXamlNS10), typeof(DescriptorWrapperLabelModelParameterExtension) },
{ XName.Get("FreeNodeLabelModel", YfilesNetXamlNS10), typeof(FreeNodeLabelModel) },
{ XName.Get("RatioAnchoredLabelModelParameter", YfilesNetXamlNS10), typeof(RatioAnchoredLabelModelParameterExtension) },
{ XName.Get("SandwichLabelModel", YfilesNetXamlNS10), typeof(SandwichLabelModel) },
{ XName.Get("SandwichParameter", YfilesNetXamlNS10), typeof(SandwichParameterExtension) },
{ XName.Get("ExteriorLabelModel", YfilesNetXamlNS10), typeof(ExteriorLabelModel) },
{ XName.Get("ExteriorLabelModelParameter", YfilesNetXamlNS10), typeof(ExteriorLabelModelParameterExtension) },
{ XName.Get("InteriorLabelModel", YfilesNetXamlNS10), typeof(InteriorLabelModel) },
{ XName.Get("InteriorLabelModelParameter", YfilesNetXamlNS10), typeof(InteriorLabelModelParameterExtension) },
{ XName.Get("InteriorStretchLabelModel", YfilesNetXamlNS10), typeof(InteriorStretchLabelModel) },
{ XName.Get("InteriorStretchLabelModelParameter", YfilesNetXamlNS10), typeof(InteriorStretchLabelModelParameterExtension) },
{ XName.Get("NinePositionsEdgeLabelModel", YfilesNetXamlNS10), typeof(NinePositionsEdgeLabelModel) },
{ XName.Get("NinePositionsEdgeLabelParameter", YfilesNetXamlNS10), typeof(Xaml.NinePositionsEdgeLabelModelParameterExtension) },
{ XName.Get("FreeEdgeLabelModel", YfilesNetXamlNS10), typeof(FreeEdgeLabelModel) },
{ XName.Get("FreeEdgeLabelModelParameter", YfilesNetXamlNS10), typeof(FreeEdgeLabelModelParameterExtension) },
{ XName.Get("SmartEdgeLabelModel", YfilesNetXamlNS10), typeof(SmartEdgeLabelModel) },
{ XName.Get("SmartEdgeLabelModelParameter", YfilesNetXamlNS10), typeof(SmartEdgeLabelModelParameterExtension) },
{ XName.Get("BendAnchoredPortLocationModel", YfilesNetXamlNS10), typeof(BendAnchoredPortLocationModel) },
{ XName.Get("BendAnchoredParameter", YfilesNetXamlNS10), typeof(BendAnchoredParameterExtension) },
{ XName.Get("GenericPortLocationModel", YfilesNetXamlNS10), typeof(Xaml.GenericPortLocationModelExtension) },
{ XName.Get("GenericPortLocationParameter", YfilesNetXamlNS10), typeof(GenericPortLocationParameterExtension) },
{ XName.Get("SegmentRatioPortLocationModel", YfilesNetXamlNS10), typeof(SegmentRatioPortLocationModel) },
{ XName.Get("SegmentRatioParameterParameter", YfilesNetXamlNS10), typeof(SegmentRatioParameterExtension) },
{ XName.Get("StripeLabelModel", YfilesNetXamlNS10), typeof(StripeLabelModel) },
{ XName.Get("StripeLabelModelParameter", YfilesNetXamlNS10), typeof(StripeLabelModelParameterExtension) },
{ XName.Get("StretchStripeLabelModel", YfilesNetXamlNS10), typeof(StretchStripeLabelModel) },
{ XName.Get("StretchStripeLabelModelParameter", YfilesNetXamlNS10), typeof(StretchStripeLabelModelParameterExtension) }
// ,
//
// { XName.Get("SolidBrush", FormsNS10), typeof(SolidBrushExtension) }
};
handler.QueryType += (sender, args) => {
Type result;
if (mappings.TryGetValue(args.XmlName, out result))
{
args.Result = result;
}
};
}
/// <summary>
/// Configures a <see cref="GraphMLIOHandler"/> instance to read GraphML files written by
/// previous versions of yFiles.NET.
/// </summary>
public static void ConfigureGraphMLCompatibility(this GraphMLIOHandler handler)
{
GraphMLCompatibility.ConfigureGraphMLCompatibility(handler);
}
/// <summary>
/// Initializes the graph from the supplied GraphML file and creates the model from it.
/// </summary>
/// <remarks>
/// While this reads the graph from a GraphML file and constructs the model from an already-finished graph, a
/// real-world application would likely create the model from whichever data source is available and then create
/// the graph from it.
/// </remarks>
private void InitGraphAndModel()
{
var graph = new DefaultGraph
{
NodeDefaults = { Style = new NodeControlNodeStyle("NodeStyle")
{
OutlineShape = new Ellipse()
} },
EdgeDefaults = { Style = new EdgeSegmentControlEdgeStyle("EdgeStyle") }
};
var ioh = new GraphMLIOHandler();
// Parse node kinds and other info
IMapper <INode, NodeKind> nodeKinds = new DictionaryMapper <INode, NodeKind>();
IMapper <INode, NodeInfo> nodeInfos = new DictionaryMapper <INode, NodeInfo>();
ioh.AddInputMapper("NetworkMonitoring.NodeKind", nodeKinds);
ioh.AddInputMapper("NetworkMonitoring.NodeInfo", nodeInfos);
ioh.Read(graph, @"Resources\network.graphml");
foreach (var node in graph.Nodes)
{
// Create and attach the model node to the graph node.
var modelNode = new ModelNode
{
Name = nodeInfos[node].Name,
Ip = nodeInfos[node].Ip,
Enabled = true,
Kind = nodeKinds[node]
};
node.Tag = modelNode;
// Add the label
var label = graph.AddLabel(node, "", FreeLabelModel.Instance.CreateDefaultParameter(), nodeLabelStyle, tag: modelNode);
// Attach event handler for changing label visibility, so that the graph redraws accordingly.
// Since visibility can change via clicking on the node *and* from within the label, we have to use an event
// handler on the model node here.
modelNode.PropertyChanged += delegate(object sender, PropertyChangedEventArgs args) {
if (args.PropertyName == "LabelVisible")
{
GraphControl.Invalidate();
}
};
}
foreach (var edge in graph.Edges)
{
// Create and attach the model edge to the graph edge
var modelEdge = new ModelEdge
{
Source = (ModelNode)edge.GetSourceNode().Tag,
Target = (ModelNode)edge.GetTargetNode().Tag
};
edge.Tag = modelEdge;
// Add the edge label
var label = graph.AddLabel(edge, "", NinePositionsEdgeLabelModel.CenterCentered, edgeLabelStyle, tag: modelEdge);
}
// Create the mappings from model items to graph elements.
modelNodeToINode = graph.Nodes.ToDictionary(node => (ModelNode)node.Tag);
modelEdgeToIEdge = graph.Edges.ToDictionary(edge => (ModelEdge)edge.Tag);
model = new NetworkModel(modelNodeToINode.Keys, modelEdgeToIEdge.Keys);
GraphControl.Graph = graph;
}