private void ViewerOnEdgeAdded(object sender, EventArgs eventArgs)
{
var edge = (Edge)sender;
var form = new Form();
var tableLayout = new TableLayoutPanel {
Dock = DockStyle.Fill
};
form.Controls.Add(tableLayout);
// TODO: GetEdgeTypes or something
foreach (var type in graph.GetNodeTypes())
{
if (type.InstanceMetatype != Repo.Metatype.Edge || type.IsAbstract)
{
continue;
}
var edgeType = type as Repo.IEdge;
tableLayout.RowStyles.Add(new RowStyle(SizeType.Percent, 25));
// TODO: We definitely need names for non-abstract edges. Maybe as attribute?
var associationButton = new Button {
Text = "Link", Dock = DockStyle.Fill
};
associationButton.Click += (o, args) =>
{
graph.CreateNewEdge(edgeType, edge);
viewer.Graph.AddPrecalculatedEdge(edge);
viewer.SetEdgeLabel(edge, edge.Label);
var ep = new EdgeLabelPlacement(viewer.Graph.GeometryGraph);
ep.Run();
viewer.Invalidate();
form.DialogResult = DialogResult.OK;
};
associationButton.Font = new Font(associationButton.Font.FontFamily, fontSize);
tableLayout.Controls.Add(associationButton, 0, tableLayout.RowCount - 1);
++tableLayout.RowCount;
}
var result = form.ShowDialog();
if (result == DialogResult.Cancel)
{
viewer.Undo();
viewer.Invalidate();
}
}
/// <summary>
/// Changes an edge's label and updates the display
/// </summary>
/// <param name="e">The edge whose label has to be changed</param>
/// <param name="newLabel">The new label</param>
internal void RelabelEdge(Edge e, string newLabel)
{
if (e.Label == null)
{
e.Label = new Label(newLabel);
}
else
{
e.Label.Text = newLabel;
}
gViewer.SetEdgeLabel(e, e.Label);
e.Label.GeometryLabel.InnerPoints = new List <Point>();
var ep = new EdgeLabelPlacement(gViewer.Graph.GeometryGraph);
ep.Run();
gViewer.Graph.GeometryGraph.UpdateBoundingBox();
gViewer.Invalidate();
}
