/// <summary>
/// Adds a node to the diagram interactively, allowing the user to move the mouse and click to choose the final position for the node.
/// </summary>
/// <param name="node">The node to add.</param>
public void AddNodeInteractively(Node node)
{
AddNode(node);
var interaction = new DiagramInteractionEventArguments(InteractionType.NodeInserted);
DiagramInteractionManager.HandleDiagramInput(interaction, this);
}
private void KeyInputHandler(KeyEventArgs e, InteractionType type)
{
var interaction = new DiagramInteractionEventArguments(type)
{
Key = e.Key
};
DiagramInteractionManager.HandleDiagramInput(interaction, this);
}
private void KeyInputHandler(IInputElement sender, KeyEventArgs e, InteractionType type)
{
var mousePosition = Mouse.GetPosition(sender);
var interaction = new DiagramInteractionEventArguments(type)
{
MousePosition = mousePosition,
Key = e.Key
};
DiagramInteractionManager.HandleDiagramInput(interaction, this);
}
public void AddNode(Node node)
{
if (node.Model == null)
{
throw new InvalidOperationException("Can not add a node to the diagram before it has been initialized");
}
Model.AddNode(node.Model);
AddNodeViewModel(node);
var interaction = new DiagramInteractionEventArguments(InteractionType.NodeInserted);
DiagramInteractionManager.HandleDiagramInput(interaction, this);
}
private void MouseInputHandler(object sender, MouseEventArgs e, InteractionType interactionType)
{
var relativeMousePosition = e.GetPosition((IInputElement)sender);
var interaction = new DiagramInteractionEventArguments(interactionType)
{
MousePosition = relativeMousePosition
};
if (e is MouseWheelEventArgs mouseWheelEventArguments)
{
interaction.MouseWheelDelta = mouseWheelEventArguments.Delta;
}
DiagramInteractionManager.HandleDiagramInput(interaction, this);
}
/// <summary>
/// Creates a new instance of <see cref="Diagram"/>.
/// </summary>
/// <param name="diagram">The model.</param>
/// <param name="nodeProvider">A node provider to create nodes.</param>
/// <param name="diagramInteractors">A list of interactors to enable on this diagram.</param>
public Diagram(
DiagramModel diagram,
INodeProvider nodeProvider,
IEnumerable <DiagramInteractor> diagramInteractors)
{
DiagramInteractionManager = new DiagramInteractionManager(() => diagramInteractors);
ExecuteWhenViewLoaded(() => Keyboard.Focus(View));
DiagramModel = diagram;
DiagramModel.PropertyChanged += DiagramOnPropertyChanged;
if (diagram.Nodes != null)
{
foreach (var nodeModel in diagram.Nodes)
{
var viewModel = nodeProvider.CreateNodeFromModel(nodeModel);
AddNodeViewModel(viewModel);
}
}
}
public Diagram(
DiagramModel diagram,
IProvideNodes nodeProvider,
IEnumerable <DiagramInteractor> diagramInteractors)
{
_nodeProvider = nodeProvider ?? throw new ArgumentNullException(nameof(nodeProvider));
DiagramInteractionManager = new DiagramInteractionManager(() => diagramInteractors);
Model = diagram;
Model.PropertyChanged += DiagramOnPropertyChanged;
if (diagram.Nodes != null)
{
foreach (var nodeModel in diagram.Nodes)
{
var viewModel = nodeProvider.LoadNodeViewModelFromNode(nodeModel);
nodeModel.SetTerminalsPropertyChanged();
AddNodeViewModel(viewModel);
}
}
}
