/// <summary>
/// Runs the view model filter.
/// </summary>
/// <param name="vmId">Identifies the view model.</param>
/// <param name="vm">View model instance.</param>
/// <param name="data">View model data.</param>
/// <param name="vmAction">Filter action.</param>
private async Task RunVMFilters(BaseVM vm, object data, VMController.VMActionDelegate vmAction)
{
try
{
_hubContext.Data = data;
await _hubPipeline.RunVMFiltersAsync(_hubContext, vm, async ctx =>
{
await vmAction(ctx.HubContext.Data);
});
}
catch (TargetInvocationException ex)
{
throw ex.InnerException;
}
}
/// <summary>
/// Runs the filter before the view model respond to something.
/// </summary>
private async Task RunRespondingVMFilters(string vmId, BaseVM vm, object vmData, VMController.VMActionDelegate vmAction)
{
try
{
_hubContext = new DotNetifyHubContext(_callerContext, nameof(IDotNetifyHubMethod.Response_VM), vmId, vmData, null, Principal);
await _hubPipeline.RunMiddlewaresAsync(_hubContext, async ctx =>
{
Principal = ctx.Principal;
await RunVMFilters(vm, ctx.Data, vmAction);
});
}
catch (Exception ex)
{
var finalEx = await _hubPipeline.RunExceptionMiddlewareAsync(_callerContext, ex);
if (finalEx is OperationCanceledException == false && _callerContext != null)
{
await ResponseVMAsync(_callerContext.ConnectionId, vmId, SerializeException(finalEx));
}
}
}
/// <summary> /// Runs the filter before the view model is updated. /// </summary> private Task RunUpdatingVMFilters(string vmId, BaseVM vm, object vmData, VMController.VMActionDelegate vmAction) => RunVMFilters(vm, vmData, vmAction);
/// <summary> /// Runs the filter before the view model is requested. /// </summary> private Task RunRequestingVMFilters(string vmId, BaseVM vm, object vmArg, VMController.VMActionDelegate vmAction) => RunVMFilters(vm, vmArg, vmAction);
