public async override void OnActiveChanged(bool isActive)
{
try
{
if (isActive)
{
var openDocuments = new FindDocumentViewModel {
Module = "Trading"
};
OnGetViewModels(openDocuments);
var tradingViewModels = openDocuments.ViewModels.OfType <TradingViewModel>()
.Where(d => d.SymbolViewModel != null && d.SymbolViewModel.IsActive).ToList();
foreach (var tradingViewModel in tradingViewModels)
{
tradingViewModel.DisposeSymbolViewModel();
}
await LoadSymbolViewModel().ConfigureAwait(false);
}
else
{
DisposeSymbolViewModel();
}
}
catch (Exception ex)
{
TradingViewModelException(ex.ToString(), ex);
}
}
private void GetDocuments(object param)
{
var documentViewModels = new FindDocumentViewModel();
OnGetViewModels(documentViewModels);
ViewModelContext.UiDispatcher.Invoke(
() =>
{
OpenDocuments.Clear();
documentViewModels.ViewModels.ForEach(vm =>
{
if (vm != this)
{
OpenDocuments.Add(vm);
}
});
});
}
/// <summary>
/// Gets one or more view models based on settings in <see cref="FindDocumentViewModel"/>.
/// A single view model can be fetched by navigation id, multiple view models can be
/// fetched by module name, and if neither navigation id or module name is provided then
/// all document view models will be returned for all views.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">The <see cref="FindDocumentViewModel"/>.</param>
private void GetViewModels(object sender, FindDocumentViewModel e)
{
if (String.IsNullOrEmpty(e.NavigationId) &&
String.IsNullOrEmpty(e.Module))
{
var documentViewModels = ViewContext.NavigationManager.GetAllViewModels();
e.ViewModels = documentViewModels;
return;
}
if (!String.IsNullOrEmpty(e.NavigationId))
{
var documentViewModel = ViewContext.NavigationManager.GetViewModel(e.NavigationId);
e.ViewModel = documentViewModel;
}
if (!String.IsNullOrEmpty(e.Module))
{
var documentViewModels = ViewContext.NavigationManager.GetViewModels(e.Module);
e.ViewModels = documentViewModels;
}
}
