public ParameterListener(ParameterCollection parameterCollection, ParameterPath path)
{
this.path = path;
foreach (var currentContainer in ContainersInPath(parameterCollection, path.Keys))
{
AppendCurrentPath(currentContainer);
}
currentValue = path.GetValue(containers[0].Value);
}
public ParameterListener(ParameterCollection parameterCollection, ParameterPath path)
{
this.path = path;
foreach (var currentContainer in ContainersInPath(parameterCollection, path.Keys))
{
AppendCurrentPath(currentContainer);
}
currentValue = path.GetValue(containers[0].Value);
}
private void propertyContainer_PropertyUpdated(ParameterCollection parameterCollection, object newValue, object oldValue, int pathIndex)
{
if (containers[pathIndex].Value != parameterCollection)
{
throw new InvalidOperationException("Unexpected PropertyContainer in PathListener.");
}
// Optimize case where last item only changed (no need to recreate subpath)
if (pathIndex < path.Keys.Length - 1)
{
// Unregister listeners of this subpath
for (int i = pathIndex + 1; i < containers.Count; ++i)
{
// Only remove event handler if not present in first part of the path (otherwise we need to keep it)
if (containers.IndexOf(containers[i], 0, i) == -1)
{
containers[i].Value.RemoveEvent(path.Keys[i], delegates[i]);
}
}
// Remove containers of this subpath
containers.RemoveRange(pathIndex + 1, containers.Count - pathIndex - 1);
delegates.RemoveRange(pathIndex + 1, delegates.Count - pathIndex - 1);
// Recreate subpath hierarchy
foreach (var currentContainer in ContainersInPath(parameterCollection, path.Keys.Skip(pathIndex)).Skip(1))
{
// Only add event handler if not already in the path (if same PropertyContainer is multiple time in the path)
AppendCurrentPath(currentContainer);
}
}
var newValue2 = path.GetValue(containers[0].Value);
if (ParameterUpdated != null && !ArePropertyValuesEqual(path.Keys.Last(), this.currentValue, newValue2))
{
ParameterUpdated(containers[0].Value, path, newValue2);
}
this.currentValue = newValue2;
}
