public void Constructor_ExpectedValues()
{
// Call
using (var graphControl = new PointedTreeGraphControl())
{
// Assert
Assert.IsInstanceOf <UserControl>(graphControl);
Assert.IsInstanceOf <IPointedTreeGraphControl>(graphControl);
Assert.IsNull(graphControl.Data);
Assert.IsNull(graphControl.Selection);
Assert.AreEqual(1, graphControl.Controls.Count);
ZoomControl zoomControl = PointedTreeGraphControlHelper.GetZoomControl(graphControl);
Assert.AreEqual(300, zoomControl.ZoomDeltaMultiplier);
Assert.AreEqual(ZoomControlModes.Original, zoomControl.Mode);
Assert.AreEqual(ZoomViewModifierMode.None, zoomControl.ModifierMode);
Assert.AreEqual(new TimeSpan(0), zoomControl.AnimationLength);
Assert.AreEqual(1, zoomControl.Resources.MergedDictionaries.Count);
ResourceDictionary templateDictionary = zoomControl.Resources.MergedDictionaries.First();
Assert.AreEqual("/Core.Components.GraphSharp.Forms;component/Templates/PointedTreeGraphTemplate.xaml", templateDictionary.Source.AbsolutePath);
var graphLayout = (PointedTreeGraphLayout)zoomControl.Content;
Assert.IsInstanceOf <PointedTreeGraph>(graphLayout.Graph);
}
}
public void GivenGraphControlWithoutData_WhenDataSet_ThenGraphControlUpdated()
{
// Given
using (var graphControl = new PointedTreeGraphControl())
{
var doubleUsedNode = new GraphNode("<text>Double used</text>", new GraphNode[0], false);
var node = new GraphNode("<text>Root</text>", new[]
{
new GraphNode("<text>Child 1</text>", new[]
{
doubleUsedNode
}, false),
new GraphNode("<text>Child 2</text>", new[]
{
doubleUsedNode
}, false)
}, false);
PointedTreeGraph originalGraph = PointedTreeGraphControlHelper.GetPointedTreeGraph(graphControl);
// When
graphControl.Data = node;
// Then
PointedTreeGraph newGraph = PointedTreeGraphControlHelper.GetPointedTreeGraph(graphControl);
Assert.AreNotSame(originalGraph, newGraph);
Assert.AreEqual(5, newGraph.VertexCount);
Assert.AreEqual(4, newGraph.EdgeCount);
}
}
public void GivenControlWithSelectedVertex_WhenOtherVertexSelected_FirstSelectedVertexUnselected()
{
// Given
using (var graphControl = new PointedTreeGraphControl())
{
var node = new GraphNode("<text>node 1</text>", new[]
{
new GraphNode("<text>node 2</text>", new GraphNode[0], true)
}, true);
graphControl.Data = node;
PointedTreeGraph graph = PointedTreeGraphControlHelper.GetPointedTreeGraph(graphControl);
PointedTreeElementVertex firstSelectedVertex = graph.Vertices.ElementAt(1);
firstSelectedVertex.IsSelected = true;
PointedTreeElementVertex newSelectedVertex = graph.Vertices.First();
// When
newSelectedVertex.IsSelected = true;
// Then
Assert.IsFalse(firstSelectedVertex.IsSelected);
}
}
public void GivenControlWithData_WhenVertexSelected_SelectionSetToGraphNodeAndSelectionChangedFired()
{
// Given
using (var graphControl = new PointedTreeGraphControl())
{
var childNode = new GraphNode("<text>node 2</text>", new GraphNode[0], true);
var node = new GraphNode("<text>node 1</text>", new[]
{
childNode
}, true);
graphControl.Data = node;
PointedTreeGraph graph = PointedTreeGraphControlHelper.GetPointedTreeGraph(graphControl);
var selectionChanged = 0;
graphControl.SelectionChanged += (sender, args) => selectionChanged++;
// Precondition
Assert.IsNull(graphControl.Selection);
// When
PointedTreeElementVertex selectedVertex = graph.Vertices.ElementAt(1);
selectedVertex.IsSelected = true;
// Then
Assert.AreSame(childNode, graphControl.Selection);
Assert.AreEqual(1, selectionChanged);
}
}
public void GivenGraphControlWithData_WhenDataSetToNull_ThenGraphControlUpdated()
{
// Given
var node = new GraphNode("<text>Root</text>", new[]
{
new GraphNode("<text>Child 1</text>", new GraphNode[0], false)
}, false);
using (var graphControl = new PointedTreeGraphControl
{
Data = node
})
{
PointedTreeGraph graph = PointedTreeGraphControlHelper.GetPointedTreeGraph(graphControl);
// Precondition
Assert.AreEqual(2, graph.VertexCount);
Assert.AreEqual(1, graph.EdgeCount);
// When
graphControl.Data = null;
// Then
graph = PointedTreeGraphControlHelper.GetPointedTreeGraph(graphControl);
Assert.AreEqual(0, graph.VertexCount);
Assert.AreEqual(0, graph.EdgeCount);
}
}
/// <summary>
/// Gets the underlying <see cref="PointedTreeGraph"/> from the <paramref name="control"/>.
/// </summary>
/// <param name="control">The control to get the underlying <see cref="PointedTreeGraph"/>.</param>
/// <returns>The found <see cref="PointedTreeGraph"/>.</returns>
/// <exception cref="ArgumentNullException">Thrown when <paramref name="control"/> is <c>null</c>.</exception>
public static PointedTreeGraph GetPointedTreeGraph(PointedTreeGraphControl control)
{
ZoomControl zoomControl = GetZoomControl(control);
var graphLayout = (PointedTreeGraphLayout)zoomControl.Content;
return(graphLayout.Graph);
}
/// <summary>
/// Gets the underlying <see cref="ZoomControl"/> from the <paramref name="control"/>.
/// </summary>
/// <param name="control">The control to get the underlying <see cref="ZoomControl"/>.</param>
/// <returns>The found <see cref="ZoomControl"/>.</returns>
/// <exception cref="ArgumentNullException">Thrown when <paramref name="control"/> is <c>null</c>.</exception>
public static ZoomControl GetZoomControl(PointedTreeGraphControl control)
{
if (control == null)
{
throw new ArgumentNullException(nameof(control));
}
var elementHost = TypeUtils.GetField <ElementHost>(control, "wpfElementHost");
return((ZoomControl)elementHost.Child);
}
