/// <summary>
/// Removes a connection from the view model.
/// </summary>
/// <param name="pConnection">The connection to remove.</param>
public void RemoveConnection(ConnectionViewModel pConnection)
{
this.mConnections.Remove(pConnection);
this.mGraphItems.Remove(pConnection);
if (this.ConnectionRemoved != null)
{
this.ConnectionRemoved(this, pConnection);
}
}
/// <summary>
/// Adds a node to the view model.
/// </summary>
/// <param name="pConnection">The connection to add.</param>
public void AddConnection(ConnectionViewModel pConnection)
{
this.mConnections.Add(pConnection);
this.mGraphItems.Add(pConnection);
if (this.ConnectionAdded != null)
{
this.ConnectionAdded(this, pConnection);
}
}
/// <summary>
/// Delegate called when the mouse isup on the working canvas.
/// </summary>
/// <param name="pSender">The event sender.</param>
/// <param name="pEventArgs">The event arguments.</param>
private void OnWorkingCanvasMouseUp(object pSender, MouseButtonEventArgs pEventArgs)
{
// Release the mouse capture.
this.WorkingCanvas.ReleaseMouseCapture();
this.WorkingCanvas.MouseMove -= this.OnWorkingCanvasMouseMove;
this.WorkingCanvas.MouseUp -= this.OnWorkingCanvasMouseUp;
this.WorkingCanvas.Visibility = Visibility.Collapsed;
this.ConnectingLine.Visibility = Visibility.Collapsed;
// Trying to create the final connection.
if (this.mSourceConnector != null && this.mTargetConnector != null)
{
// Both defined means the connection can be created. Test have been made in the mouse move event handler.
GraphViewModel lGraphViewModel = this.ParentView.DataContext as GraphViewModel;
if (lGraphViewModel == null)
{
return;
}
PortViewModel lSourceViewModel = this.mSourceConnector.ParentPort.Content as PortViewModel;
PortViewModel lTargetViewModel = this.mTargetConnector.ParentPort.Content as PortViewModel;
ConnectionViewModel lConnectionViewModel = new ConnectionViewModel();
lConnectionViewModel.Output = lSourceViewModel;
lConnectionViewModel.Input = lTargetViewModel;
lGraphViewModel.AddConnection(lConnectionViewModel);
}
// Forget the reference on connectors.
this.mSourceConnector = null;
this.mTargetConnector = null;
}
/// <summary> /// Fires the request connection creation. /// </summary> /// <param name="pConnectionToRemove">The connection to remove.</param> protected abstract void RequestConnectionRemoval(ConnectionViewModel pConnectionToRemove);
/// <summary>
/// Removes a connection from the view model.
/// </summary>
/// <param name="pConnection">The connection to remove.</param>
/// <!-- WARNING From outside, this method must be called only for test purpose -->
protected void RemoveConnection(ConnectionViewModel pConnection)
{
this.mConnections.Remove(pConnection);
this.mGraphItems.Remove(pConnection);
}
/// <summary>
/// Adds a node to the view model.
/// </summary>
/// <param name="pConnection">The connection to add.</param>
/// <!-- WARNING From outside, this method must be called only for test purpose -->
protected void AddConnection(ConnectionViewModel pConnection)
{
this.mConnections.Add(pConnection);
this.mGraphItems.Add(pConnection);
}
/// <summary>
/// This method is called when a mouse button up occured on the adorner.
/// </summary>
/// <param name="pEventArgs">The event arguments</param>
protected override void OnMouseUp(MouseButtonEventArgs pEventArgs)
{
// Release the mouse capture.
if (this.IsMouseCaptured)
{
this.ReleaseMouseCapture();
}
// Getting the position.
Point lHitPoint = pEventArgs.GetPosition(this);
AdornerLayeredCanvas lParentCanvas = this.AdornedElement as AdornerLayeredCanvas;
if (lParentCanvas != null)
{
// Remove the adorner.
AdornerLayer lLayer = lParentCanvas.AdornerLayer;
if (lLayer != null)
{
lLayer.Remove(this);
}
// Hitting the target connector.
InputConnector lTargetConnector = lParentCanvas.HitControl<InputConnector>(lHitPoint);
if (lTargetConnector != null)
{
GraphViewModel lGraphViewModel = lParentCanvas.DataContext as GraphViewModel;
if (lGraphViewModel != null)
{
PortViewModel lTargetViewModel = lTargetConnector.ParentPort.Content as PortViewModel;
PortViewModel lSourceViewModel = this.mSourceConnector.ParentPort.Content as PortViewModel;
if (lTargetViewModel != null && lSourceViewModel.CanBeConnectedTo(lTargetViewModel))
{
ConnectionViewModel lConnectionViewModel = new ConnectionViewModel();
lConnectionViewModel.Output= lSourceViewModel;
lConnectionViewModel.Input = lTargetViewModel;
lGraphViewModel.AddConnection(lConnectionViewModel);
}
}
}
}
}
/// <summary>
/// Creates the type graph.
/// </summary>
/// <returns>The graph view model.</returns>
public GraphViewModel CreateTypeGraph()
{
GraphViewModel lGraph = new GraphViewModel();
NodeViewModel lNode0 = new TypeNodeViewModel(typeof(SampleClass));
lGraph.AddNode(lNode0);
NodeViewModel lNode1 = new TypeNodeViewModel(typeof(SampleClass1VeryTooMuchLong));
lGraph.AddNode(lNode1);
NodeViewModel lNode2 = new NodeViewModel();
lNode2.DisplayString = "Empty node";
lGraph.AddNode(lNode2);
int i = 0;
foreach (NodeViewModel lNode in lGraph.Nodes)
{
lNode.X = 300 * i;
lNode.Y = 100 * i;
i++;
}
ConnectionViewModel lConnectionViewModel = new ConnectionViewModel();
lConnectionViewModel.Output = lGraph.Nodes.ElementAt(0).Ports.FirstOrDefault(pPort => pPort.Direction == PortDirection.Output);
lConnectionViewModel.Input = lGraph.Nodes.ElementAt(1).Ports.FirstOrDefault(pPort => pPort.Direction == PortDirection.Input);
lGraph.AddConnection(lConnectionViewModel);
return lGraph;
}
/// <summary>
/// Removes a connection from the view model.
/// </summary>
/// <param name="pConnection">The connection to remove.</param>
public void RemoveConnection(ConnectionViewModel pConnection)
{
this.mConnections.Remove(pConnection);
this.mGraphItems.Remove(pConnection);
if (this.ConnectionRemoved != null)
{
this.ConnectionRemoved(this, pConnection);
}
}
/// <summary>
/// Adds a node to the view model.
/// </summary>
/// <param name="pConnection">The connection to add.</param>
public void AddConnection(ConnectionViewModel pConnection)
{
this.mConnections.Add(pConnection);
this.mGraphItems.Add(pConnection);
if (this.ConnectionAdded != null)
{
this.ConnectionAdded(this, pConnection);
}
}
