/// <summary>
/// Interpret the text content of the text field as graphml
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void ApplyGraphMLButton_Click(object sender, EventArgs e)
{
try {
using (StringReader reader = new StringReader(graphMLText.Text)) {
graphmlIoHandler.Read(Graph, reader);
GraphControl.FitGraphBounds();
}
} catch (Exception exc) {
new ExceptionDialog(exc).ShowDialog();
}
}
/// <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>
/// 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;
}
