async void OnTagsChanged(object sender, EventArgs e)
{
try {
var ct = SyncHelper.CancelAndRetainToken(ref _Element._Cancellation);
await Task.Run(TagDocument, ct).ConfigureAwait(true);
_Regions = TagRegions();
if (ct.IsCancellationRequested)
{
return;
}
}
catch (ObjectDisposedException) {
return;
}
catch (OperationCanceledException) {
return;
}
_Element.InvalidateVisual();
}
async void Update(object sender, EventArgs e)
{
HideMenu();
SyncHelper.CancelAndDispose(ref _cancellationSource, true);
var cs = _cancellationSource;
if (cs != null)
{
try {
await Update(SyncHelper.CancelAndRetainToken(ref _cancellationSource));
}
catch (OperationCanceledException) {
// ignore
}
}
async Task Update(CancellationToken token)
{
var nodes = await UpdateModelAndGetContainingNodesAsync(token);
await ThreadHelper.JoinableTaskFactory.SwitchToMainThreadAsync(token);
var c = Math.Min(Items.Count, nodes.Count);
int i, i2;
for (i = 1, i2 = 0; i < c && i2 < c; i2++)
{
var n = nodes[i2];
if (token.IsCancellationRequested)
{
return;
}
if (Items[i] is NodeItem ni && ni.Node == n)
{
// keep the NaviItem if node is not updated
++i;
continue;
}
if (n.IsKind(SyntaxKind.NamespaceDeclaration))
{
continue;
}
break;
}
if ((i == 1 || i2 < nodes.Count && nodes[i2].Kind().IsTypeOrNamespaceDeclaration()) && _RootItem.FilterText.Length == 0)
{
// clear type and namespace menu items if a type is changed
_RootItem.ClearSymbolList();
}
c = Items.Count;
// remove nodes out of range
while (c > i)
{
Items.RemoveAt(--c);
}
c = nodes.Count;
NodeItem memberNode = null;
while (i2 < c)
{
if (token.IsCancellationRequested)
{
return;
}
var node = nodes[i2];
if (node.IsKind(SyntaxKind.NamespaceDeclaration))
{
_RootItem.SetText(node.GetDeclarationSignature());
++i2;
continue;
}
var newItem = new NodeItem(this, node);
if (memberNode == null && node.Kind().IsMemberDeclaration())
{
memberNode = newItem;
(newItem.Header as TextBlock).FontWeight = FontWeights.Bold;
newItem.IsChecked = true;
newItem.ReferencedDocs.AddRange(node.FindRelatedTypes(_SemanticContext.SemanticModel, token).Take(5));
}
Items.Add(newItem);
++i2;
}
if (memberNode == null)
{
memberNode = Items.GetFirst <NodeItem>(n => n.HasReferencedDocs);
}
if (memberNode != null && memberNode.HasReferencedDocs)
{
foreach (var doc in memberNode.ReferencedDocs)
{
Items.Add(new DocItem(this, doc));
}
}
}
}