public void Remove()
{
foreach (var connection in ConnectionsFrom)
{
// remove shapes
connection.RemoveFromUICollection((Parent as Canvas).Children);
// remove connection from connected element
connection.Left.RemoveConnection(connection);
// remove connection from global list
Workspace.Connections.Remove(connection);
}
foreach (var connection in ConnectionsTo)
{
// remove shapes
connection.RemoveFromUICollection((Parent as Canvas).Children);
// remove connection from connected element
connection.Right.RemoveConnection(connection);
// remove connection from global list
Workspace.Connections.Remove(connection);
}
// remove all connections
ConnectionsFrom.Clear();
ConnectionsTo.Clear();
// remove user control
(Parent as Canvas).Children.Remove(this);
}
private void HilightInputAnchorOffByName(string name)
{
var anchor = GetElementByName(name);
if (anchor == null)
{
return;
}
var inputColor = ConnectionsFrom.SingleOrDefault(c => c.RightAnchorName == name)?.Left?.CustomColor ?? InputBackground;
// set anchor color
(anchor as Rectangle).Fill = new SolidColorBrush(inputColor);
var label = GetElementByName((anchor as Rectangle).Name.Replace(InputAnchorPrefix, LabelPrefix)) as Label;
if (label != null)
{
label.Foreground = new SolidColorBrush(TextForeground);
}
// set connection color
var connection = ConnectionsFrom.SingleOrDefault(c => c.RightAnchorName == name);
if (connection != null)
{
connection.Hilight(inputColor);
}
Cursor = Cursors.Arrow;
}
public virtual void AddConnectionFrom(Connection connection, bool execute = true)
{
ConnectionsFrom.Add(connection);
EnableInputElement(connection.RightAnchorName, false);
if (execute)
{
Execute(Guid.NewGuid());
}
}
/// <summary>
/// resets input anchor background color based on connection
/// </summary>
/// <param name="name"></param>
public void ResetInputAnchorColor(string name)
{
var anchor = GetElementByName(name);
if (anchor == null)
{
return;
}
var inputColor = ConnectionsFrom.SingleOrDefault(c => c.RightAnchorName == name)?.Left?.CustomColor ?? InputBackground;
// set anchor color
(anchor as Rectangle).Fill = new SolidColorBrush(inputColor);
}
public virtual void RemoveConnection(Connection connection)
{
if (ConnectionsTo.Remove(connection))
{
HilightOutputAnchorOffByName(connection.LeftAnchorName);
}
if (ConnectionsFrom.Remove(connection))
{
// set right input value to null
var rightProperty = NodeInstance.GetType().GetProperty(connection.RightPropertyName);
if (rightProperty != null)
{
rightProperty.SetValue(NodeInstance, null);
}
EnableInputElement(connection.RightAnchorName);
HilightInputAnchorOffByName(connection.RightAnchorName);
}
}
protected void HilightInputAnchorOn(object sender, MouseEventArgs e)
{
var anchorName = (sender as FrameworkElement).Name;
var connection = ConnectionsFrom.SingleOrDefault(c => c.RightAnchorName == anchorName);
// allow hilight only if connection is in progress and rightAnchor is valid, or if no connection is in progress and right anchor is not empty
if ((Workspace.NewConnection != null && Workspace.CheckConnectionInProgress(this, anchorName)) || Workspace.NewConnection == null && connection != null)
{
(sender as Rectangle).Fill = new SolidColorBrush(Colors.White);
var label = GetElementByName((sender as Rectangle).Name.Replace(InputAnchorPrefix, LabelPrefix)) as Label;
if (label != null)
{
label.Foreground = new SolidColorBrush(Colors.White);
}
if (connection != null)
{
connection.Hilight(Colors.White);
}
Cursor = Cursors.Hand;
}
}
public virtual Guid Execute(Guid transactionId)
{
if (LastTransactionId == transactionId || (ConnectionsFrom.Count != 0 && ConnectionsFrom.All(c => c.TransactionId == transactionId)))
{
return(LastTransactionId);
}
try
{
var stopWatch = new Stopwatch();
foreach (var connection in ConnectionsFrom)
{
if (connection.TransactionId == transactionId)
{
continue;
}
// generate output from left node
(connection.Left as Node).Execute(transactionId);
// get left output value
var leftNode = connection.Left.NodeInstance;
var leftValue = leftNode
.GetType()
.GetProperty(connection.LeftPropertyName)
.GetValue(leftNode);
// set right input value
var rightProperty = NodeInstance?.GetType().GetProperty(connection.RightPropertyName);
if (rightProperty != null)
{
rightProperty.SetValue(NodeInstance, Common.Tools.Convert.ChangeType(leftValue, rightProperty.PropertyType));
}
connection.TransactionId = transactionId;
}
if (NodeInstance != null && LastTransactionId != transactionId)
{
try
{
stopWatch.Reset();
stopWatch.Start();
NodeInstance.Execute();
RaiseImpulseEvent();
stopWatch.Stop();
// log node input & output
var nodeName = AttributeHelper.GetValue <NodeInfoAttribute, string>(NodeInstance.GetType(), nameof(NodeInfoAttribute.DisplayName)) ?? NodeInstance.GetType().Name;
var nodeInputs = (NodeInstance as ILoggable)?.GetInputs()
?.Select(i => i == null ? null : (i.Length < LOG_MAX_INPUT_LENGTH ? i : (i.Substring(0, LOG_MAX_INPUT_LENGTH) + "...")).Replace(Environment.NewLine, "\\r\\n"));
var nodeOutputs = (NodeInstance as ILoggable)?.GetOutputs()
?.Select(i => i == null ? null : (i.Length < LOG_MAX_OUTPUT_LENGTH ? i : (i.Substring(0, LOG_MAX_OUTPUT_LENGTH) + "...")).Replace(Environment.NewLine, "\\r\\n"));
Log.WriteLine($"{ CustomNodeName.Text }:{ nodeName }('{ string.Join("', '", nodeInputs ?? new string[] { }) }')=['{ string.Join("', '", nodeOutputs ?? new string[] { }) }'] | { stopWatch.ElapsedMilliseconds }ms");
LastTransactionId = transactionId;
}
catch (Exception ex)
{
Log.WriteLine(ex.ToString());
}
}
foreach (var outputConnection in ConnectionsTo)
{
outputConnection.Right.Execute(transactionId);
}
}
catch (FriendlyException ex)
{
Log.WriteLine(ex.Message);
}
catch (Exception ex)
{
Log.WriteLine(ex.ToString());
}
return(LastTransactionId);
}
