internal void ActivateInputPort(int portIndex, object value = null)
{
if (portIndex < 0 || portIndex >= this.Inputs.Count)
{
throw new ArgumentOutOfRangeException("portIndex");
}
FlowNodePort port = this.Inputs[portIndex];
if (value == null && port.Type != NodePortType.Void)
{
throw new FlowGraphException("Cannot activate a node that requires a value without one.");
}
FlowNodePortActivationEventArgs eventArgs = new FlowNodePortActivationEventArgs
{
Name = port.Name,
DisplayName = port.DisplayName,
Description = port.Description,
Type = port.Type,
IsOutput = false,
Value = value
};
this.OnActivated(eventArgs);
this.Inputs[portIndex].Activate(value);
this.OnPostActivated(eventArgs);
}
/// <summary>
/// Raises event <see cref="PostActivated"/>.
/// </summary>
/// <param name="e">Details about the event.</param>
protected virtual void OnPostActivated(FlowNodePortActivationEventArgs e)
{
if (this.PostActivated != null)
{
this.PostActivated(this, e);
}
}
private void ActivateOutput <T>(int portIndex, T value, Action <IntPtr, int, T> activator)
{
FlowNodePort port = this.Outputs[portIndex];
FlowNodePortActivationEventArgs eventArgs = new FlowNodePortActivationEventArgs
{
Name = port.Name,
DisplayName = port.DisplayName,
Description = port.Description,
Type = port.Type,
IsOutput = true,
Value = value
};
this.OnActivated(eventArgs);
activator(this.Handle, portIndex, value);
this.OnPostActivated(eventArgs);
}
internal static void ActivateOutput(FlowGraphNode node, int portIndex)
{
FlowNodePort port = node.Outputs[portIndex];
FlowNodePortActivationEventArgs eventArgs = new FlowNodePortActivationEventArgs
{
Name = port.Name,
DisplayName = port.DisplayName,
Description = port.Description,
Type = port.Type,
IsOutput = true,
Value = null
};
node.OnActivated(eventArgs);
Native.FlowNodeInterop.ActivateOutput(node.Handle, portIndex);
node.OnPostActivated(eventArgs);
}
/// <summary>
/// Raises event <see cref="PostActivated"/>.
/// </summary>
/// <param name="e">Details about the event.</param>
protected virtual void OnPostActivated(FlowNodePortActivationEventArgs e)
{
if (this.PostActivated != null) this.PostActivated(this, e);
}