public Connection(WorkflowCanvas canvas, RenderNode startPoint, RenderNode endPoint, ConnectingLine line)
{
this.Canvas = canvas;
Line = line;
if (startPoint.Node.GetConnectionType() == INodeConnectionType.OUTPUT &&
endPoint.Node.GetConnectionType() == INodeConnectionType.INPUT)
{
Input = (BaseInputNode)endPoint.Node;
Output = (BaseOutputNode)startPoint.Node;
Start = startPoint;
End = endPoint;
}
else if (startPoint.Node.GetConnectionType() == INodeConnectionType.INPUT &&
endPoint.Node.GetConnectionType() == INodeConnectionType.OUTPUT)
{
Input = (BaseInputNode)startPoint.Node;
Output = (BaseOutputNode)endPoint.Node;
Start = endPoint;
End = startPoint;
}
contextMenu = new ContextMenu();
MenuItem item = new MenuItem();
item.Header = "Disconnect";
contextMenu.Items.Add(item);
item.Click += delegate
{
Disconnect();
};
}
public WorkflowScrollViewer()
{
PanningMode = PanningMode.Both;
HorizontalScrollBarVisibility = ScrollBarVisibility.Visible;
VerticalScrollBarVisibility = ScrollBarVisibility.Visible;
DockPanel panel = new DockPanel();
WorkflowCanvas canvas = new WorkflowCanvas();
canvas.Scroller = this;
panel.Children.Add(canvas);
ChildCanvas = canvas;
Content = panel;
}
protected override void OnMouseDown(MouseButtonEventArgs e)
{
logger.Trace("Entered");
base.OnMouseDown(e);
if (Parent != WfCanvas)
{
return;
}
// Keyboard.ClearFocus();
//e.Handled = true;
if (e.OriginalSource == PageImage)
{
if (!this.IsFocused)
{
if (this.Focus())
{
IsActive = true;
}
}
}
else if (e.OriginalSource.GetType() == typeof(Ellipse))
{
IsActive = true;
}
if (e.ClickCount > 1)
{
logger.Trace("doubleclick_1");
OnDoubleClick(this, e);
return;
}
/*
* if (MouseButtonState.Pressed == e.RightButton)
* {
* logger.Info("this.PageImage.ContextMenu.IsOpen = true");
* if (!this.PageImage.ContextMenu.IsOpen)
* this.PageImage.ContextMenu.IsOpen = true;
* }
*/
if (!IsDragged && MouseButtonState.Pressed == e.LeftButton)
{
RelMousePos = e.MouseDevice.GetPosition(this);
// Use a hit test to determine if node
HitTestResult result = VisualTreeHelper.HitTest(
this, e.MouseDevice.GetPosition(this));
if (result.VisualHit.GetType().IsAssignableFrom(typeof(Ellipse)))
{
Ellipse shape = (Ellipse)result.VisualHit;
RenderNode node = null;
foreach (var inputNode in InputNodes)
{
if (inputNode.Visual == shape)
{
node = inputNode;
}
}
foreach (var outputNode in OutputNodes)
{
if (outputNode.Visual == shape)
{
node = outputNode;
}
}
logger.Info("Calling delete OnNodeDragStart to start drawing connection line ");
OnNodeStartConnectionLine(node ?? throw new Exception("Hit ellipse shape is not in a node map"));
return;
}
// If not, just drag the module
IsDragged = true;
logger.Info("IsDragged ={0}", IsDragged);
WorkflowCanvas.SetZIndex(this, 2);
var window = Window.GetWindow(this);
if (window != null)
{
window.MouseUp += OnCanvasDragDrop;
}
}
}