/// <summary>
/// Create a Navigator.
/// </summary>
/// <param name="destinationParts">The destination split into string parts. May not be null.</param>
/// <param name="context">The navigation context. May not be null.</param>
public Navigator(string[] destinationParts, Simulatable context)
{
XiHelper.ArgumentNullCheck(destinationParts, context);
this.destinationParts = destinationParts;
this.destinationPartIndex = -1;
this.context = context;
}
private void BuildTreeNode(Simulatable item, TreeNode parentNode)
{
TreeNode node = new TreeNode(item.NameOrDefault);
node.Name = item.GetHashCode().ToString();
if (parentNode == null) treeView.Nodes.Add(node);
else parentNode.Nodes.Add(node);
foreach (Simulatable child in item.PersistentSimulatableChildren) BuildTreeNode(child, node);
}
/// <summary>
/// Invoke a message in the given context.
/// Message definition may be an empty string for no message.
/// </summary>
public static void InvokeMessage(Simulatable context, string messageDefinition, object eventArgument)
{
XiHelper.ArgumentNullCheck(context, messageDefinition);
if (messageDefinition.Length == 0) return;
Message message;
if (!messageDictionary.TryGetValue(messageDefinition, out message))
messageDictionary.Add(messageDefinition, message = new Message(messageDefinition));
message.Invoke(context, eventArgument);
}
/// <summary>
/// Invoke messages in the given context.
/// Message definition may be an empty string for no messages.
/// Message definitions are separated by a '@' with no white space.
/// </summary>
public static void InvokeMessages(Simulatable context, string messageDefinitions, object eventArgument)
{
XiHelper.ArgumentNullCheck(context, messageDefinitions);
if (messageDefinitions.Length == 0) return; // OPTIMIZATION
if (!HasMultipleMessageDefinitions(messageDefinitions)) InvokeMessage(context, messageDefinitions, eventArgument); // OPTIMIZATION
else
{
string[] messageDefinitionArray = ToMessageDefinitionArray(messageDefinitions);
foreach (string messageDefinition in messageDefinitionArray) InvokeMessage(context, messageDefinition, eventArgument);
}
}
/// <summary>
/// Try to invoke a message in the given context.
/// Message definition may be an empty string for no message.
/// </summary>
public static void TryInvokeMessage(Simulatable context, string messageDefinition, object eventArgument)
{
XiHelper.ArgumentNullCheck(context, messageDefinition);
try
{
InvokeMessage(context, messageDefinition, eventArgument);
}
catch (Exception e)
{
Trace.Fail(e.Message);
}
}
/// <summary>
/// Clear the calling context.
/// Important to do to avoid keeping around stale object references.
/// </summary>
public void ClearContext(Simulatable context)
{
for (int i = 0; i < argumentValues.Length; ++i)
if (argumentValues[i] == context)
argumentValues[i] = ArgumentSymbol.Context;
}
internal void RemoveSimulatableChildWithoutDisposing(Simulatable child)
{
RemoveSimulatableChildWithoutDisposingHook(child);
}
/// <summary> /// Handle removing a simulatable child without disposing it. /// </summary> protected abstract void RemoveSimulatableChildWithoutDisposingHook(Simulatable child);
/// <summary>
/// Handle the fact that a simulatable child's name has changed.
/// </summary>
protected virtual void OnSimulatableChildNameChanged(Simulatable child, string oldName) { }
/// <summary>
/// Notify that a simulatable child's name has changed.
/// </summary>
public void NotifySimulatableChildNameChanged(Simulatable child, string oldName)
{
XiHelper.ArgumentNullCheck(child, oldName);
OnSimulatableChildNameChanged(child, oldName);
}
public void RegisterMessage(Simulatable source, string messageName, Action correspondingEvent)
{
string messageSource = source.GetMessagePath(this, messageName);
correspondingEvent += () => Message.InvokeMessage(source, messages[messageSource]);
}
/// <summary>
/// Invoke the message in the given invocation context.
/// </summary>
public void Invoke(Simulatable context, object eventArgument)
{
XiHelper.ArgumentNullCheck(context);
Simulatable destination = ResolveDestination(context);
if (destination != null) InvokeOn(context, destination, eventArgument); // TODO: consider logging if the destination isn't found
}
private void InvokeOn(Simulatable context, object instance, object eventArgument)
{
MethodInfo method = ResolveMethod(instance);
if (method == null) return;
arguments.PopulateContext(context);
arguments.PopulateEventArgument(eventArgument);
try { method.Invoke(instance, arguments.ArgumentValues); }
finally { arguments.ClearContext(context); }
}
private Simulatable ResolveDestination(Simulatable context)
{
return context.GetSimulatableRelative(destinationParts);
}
public bool Contains(Simulatable item)
{
return GetItems().Contains(item);
}
private TreeNode GetTreeNode(Simulatable item)
{
if (item == null) return null;
TreeNode[] nodes = treeView.Nodes.Find(item.GetHashCode().ToString(), true);
return nodes.FirstOrDefault();
}
