public async Task <IControl> BuildAsync(object viewModel)
{
string id = null;
if (viewModel is ITabViewModel dock)
{
id = dock.Id;
if (dock.RequiresViewRefresh)
{
Logger.Verbose($"Tab requires refresh '{id}'");
views.Remove(id);
dock.RequiresViewRefresh = false;
}
}
else if (viewModel is EditorViewModel)
{
id = "root";
}
else
{
throw new NotSupportedException();
}
Logger.Debug($"Building view for object '{id}'.");
ViewContainer container;
if (!views.TryGetValue(id, out container))
{
await AvaloniaUIThread.InvokeAsync(() =>
{
container = new ViewContainer(new ContentControl(), CreateView, Cleanup);
});
views.Add(id, container);
}
var context = new ViewUpdateContext
{
CommandDispatcher = Services.GetSafeServiceAs <ICommandDispatcher>(),
ViewModel = viewModel,
View = ViewRegistry.GetView(viewModel, Services),
};
await container.Update(context);
return(container.Container);
}
/// <summary>
/// On the UI thread, creates a view from the <see cref="ViewFactory"/>, updates UI, calls <see cref="Cleanup"/>.
/// </summary>
/// <param name="context">Context passed to user methods</param>
public async Task Update(object context)
{
// creating view has to happen on the UI thread because some data structures
// e.g. Grid.ColumnsDefinitions require that
await AvaloniaUIThread.InvokeAsync(() => CreateAndUpdateView(context));
}