public async Task <IHtmlContent> InvokeAsync(ViewDisplayContext displayContext)
{
// Contextualize view invoker
_viewInvoker.Contextualize(displayContext);
// Apply view & model alterations
if (displayContext.ViewAdaptorResults != null)
{
foreach (var viewAdapterResult in displayContext.ViewAdaptorResults)
{
var updatedView = displayContext.ViewDescriptor.View;
// Apply view alterations
var viewAlterations = viewAdapterResult.ViewAlterations;
if (viewAlterations.Count > 0)
{
foreach (var alteration in viewAlterations)
{
updatedView.ViewName = alteration;
}
}
// Apply model alterations
var modelAlterations = viewAdapterResult.ModelAlterations;
if (modelAlterations.Count > 0)
{
foreach (var alteration in modelAlterations)
{
updatedView.Model = alteration(updatedView.Model);
}
}
displayContext.ViewDescriptor.View = updatedView;
}
}
// Invoke generic view
var htmlContent = await _viewInvoker.InvokeAsync(displayContext.ViewDescriptor.View);
// Apply adapter output alterations
if (displayContext.ViewAdaptorResults != null)
{
foreach (var viewAdapterResult in displayContext.ViewAdaptorResults)
{
var alterations = viewAdapterResult.OutputAlterations;
if (alterations.Count > 0)
{
foreach (var alteration in alterations)
{
htmlContent = alteration(htmlContent);
}
}
}
}
return(htmlContent);
}
// Implementation
public void Contextualize(ViewDisplayContext context)
{
ViewContext = context.ViewContext;
}
