protected virtual Task WaitCurrentNavigationsInternalAsync(IDataContext context)
{
var tasks = new List <Task>();
foreach (var dynamicPresenter in _dynamicPresenters)
{
var awaitablePresenter = dynamicPresenter as IAwaitableDynamicViewModelPresenter;
if (awaitablePresenter != null)
{
tasks.Add(awaitablePresenter.WaitCurrentNavigationAsync(context));
}
}
return(ToolkitExtensions.WhenAll(tasks.ToArray()));
}
protected virtual Task ValidateInstanceInternal(object instanceToValidate)
{
List <IValidator> list;
if (!_instanceToValidators.TryGetValue(instanceToValidate, out list) || list.Count == 0)
{
return(Empty.Task);
}
if (list.Count == 1)
{
return(list[0].ValidateAsync());
}
return(ToolkitExtensions.WhenAll(list.ToArrayEx(validator => validator.ValidateAsync())));
}
protected virtual Task ValidateInternal()
{
var tasks = new List <Task>();
foreach (var validators in _instanceToValidators.Values)
{
for (int index = 0; index < validators.Count; index++)
{
tasks.Add(validators[index].ValidateAsync());
}
}
if (tasks.Count == 1)
{
return(tasks[0]);
}
return(ToolkitExtensions.WhenAll(tasks.ToArrayEx()));
}
public Task <bool> GetCanCloseAsync()
{
if (Cancel)
{
return(MugenMvvmToolkit.Empty.FalseTask);
}
if (_deferrals == null)
{
return(MugenMvvmToolkit.Empty.TrueTask);
}
Task <bool>[] tasks;
lock (_deferrals)
tasks = _deferrals.ToArray();
return(ToolkitExtensions.WhenAll(tasks).ContinueWith(task =>
{
return tasks.All(t => !t.Result);
}, TaskContinuationOptions.ExecuteSynchronously));
}