/// <summary>
/// Raises the <see cref="Changed"/> event with the given parameters.
/// </summary>
/// <param name="index">The index where the change occurred, if applicable. <c>null</c> otherwise.</param>
/// <param name="changeType">The type of change that occurred.</param>
/// <param name="oldValue">The old value of this content.</param>
/// <param name="newValue">The new value of this content.</param>
protected void NotifyContentChanged(object index, ContentChangeType changeType, object oldValue, object newValue)
{
var args = new ContentChangeEventArgs(this, index, changeType, oldValue, newValue);
Changed?.Invoke(this, args);
FinalizeChange?.Invoke(this, args);
}
private void ContentFinalizeChange(object sender, ContentChangeEventArgs e)
{
var node = e.Content.OwnerNode as IGraphNode;
if (node != null)
{
foreach (var child in node.GetAllChildNodes())
{
RegisterNode(child);
}
}
FinalizeChange?.Invoke(sender, e);
}
private void ContentFinalizeChange(object sender, ContentChangeEventArgs e)
{
var node = e.Content.OwnerNode as IGraphNode;
var path = GetPath(e.Content.OwnerNode);
if (node != null)
{
foreach (var child in node.GetAllChildNodes(path))
{
RegisterNode(child.Item1, child.Item2);
}
}
FinalizeChange?.Invoke(sender, new GraphContentChangeEventArgs(e, path));
}
private void ContentFinalizeChange(object sender, ContentChangeEventArgs e)
{
var node = e.Content.OwnerNode as IGraphNode;
var path = GetPath(e.Content.OwnerNode);
if (node != null)
{
switch (e.ChangeType)
{
case ContentChangeType.ValueChange:
foreach (var child in node.GetAllChildNodes(path))
{
RegisterNode(child.Item1, child.Item2);
}
break;
case ContentChangeType.CollectionAdd:
if (node.Content.IsReference && e.NewValue != null)
{
var index = e.Index;
IGraphNode addedNode;
if (index != null)
{
addedNode = node.Content.Reference.AsEnumerable[e.Index].TargetNode;
}
else
{
var reference = node.Content.Reference.AsEnumerable.First(x => x.TargetNode.Content.Retrieve() == e.NewValue);
index = reference.Index;
addedNode = reference.TargetNode;
}
if (addedNode != null)
{
var addedNodePath = path?.Append(node, addedNode, GraphNodePath.ElementType.Index, index);
RegisterNode(addedNode, addedNodePath);
foreach (var child in addedNode.GetAllChildNodes())
{
RegisterNode(child.Item1, child.Item2);
}
}
}
break;
}
}
FinalizeChange?.Invoke(sender, new GraphContentChangeEventArgs(e, path));
}
private void ContentFinalizeChange(object sender, ContentChangeEventArgs e)
{
var node = e.Content.OwnerNode as IGraphNode;
if (node != null)
{
var visitor = new GraphVisitorBase();
visitor.Visiting += (node1, path) => RegisterNode(node1);
visitor.ShouldVisit = shouldRegisterNode;
switch (e.ChangeType)
{
case ContentChangeType.ValueChange:
// The changed node itself is still valid, we don't want to re-register it
visitor.SkipRootNode = true;
visitor.Visit(node);
break;
case ContentChangeType.CollectionAdd:
if (node.Content.IsReference && e.NewValue != null)
{
IGraphNode addedNode;
Index index;
if (!e.Index.IsEmpty)
{
index = e.Index;
addedNode = node.Content.Reference.AsEnumerable[e.Index].TargetNode;
}
else
{
var reference = node.Content.Reference.AsEnumerable.First(x => x.TargetNode.Content.Retrieve() == e.NewValue);
index = reference.Index;
addedNode = reference.TargetNode;
}
if (addedNode != null)
{
var path = new GraphNodePath(node).PushIndex(index);
visitor.Visit(addedNode, path);
}
}
break;
}
}
FinalizeChange?.Invoke(sender, new GraphContentChangeEventArgs(e));
}
protected void NotifyItemChanged(ItemChangeEventArgs args)
{
ItemChanged?.Invoke(this, args);
FinalizeChange?.Invoke(this, args);
}
/// <summary>
/// Raises the <see cref="ValueChanged"/> event with the given arguments.
/// </summary>
/// <param name="args">The arguments of the event.</param>
protected void NotifyContentChanged(MemberNodeChangeEventArgs args)
{
ValueChanged?.Invoke(this, args);
FinalizeChange?.Invoke(this, args);
}
/// <summary>
/// Raises the <see cref="Changed"/> event with the given arguments.
/// </summary>
/// <param name="args">The arguments of the event.</param>
protected void NotifyContentChanged(ContentChangeEventArgs args)
{
Changed?.Invoke(this, args);
FinalizeChange?.Invoke(this, args);
}
