public bool Perform(ExecuteWhen exec, IEngineContext context, IController controller, IControllerContext controllerContext)
{
if (controllerContext.SelectedViewName == null)
{
return(true);
}
if (context.IsAjax())
{
controllerContext.LayoutNames = null;
}
var p = Path.DirectorySeparatorChar.ToString(CultureInfo.InvariantCulture);
var template = new TemplateLocation();
if (context.Request.AcceptHeader != null && context.Request.AcceptHeader.Contains("application/json"))
{
template.Area = controllerContext.AreaName;
template.Controller = controllerContext.Name;
template.Action = "json";
controllerContext.LayoutNames = null;
}
else
{
var view = context.GetParameter("view");
template.Area = controllerContext.AreaName;
template.Controller = controllerContext.Name;
template.Action = string.IsNullOrEmpty(view) ? controllerContext.Action : view;
if (view == "json")
{
controllerContext.LayoutNames = null;
}
else
{
var layout = context.GetParameter("layout");
if (context.Services.ViewEngineManager.HasTemplate(p + "layouts" + p + layout))
{
controllerContext.LayoutNames = new[] { layout };
}
}
}
var t = template.ToString();
if (context.Services.ViewEngineManager.HasTemplate(t))
{
controllerContext.SelectedViewName = t;
}
else
{
template.Area = null;
template.Controller = "common";
t = template.ToString();
if (context.Services.ViewEngineManager.HasTemplate(t))
{
controllerContext.SelectedViewName = t;
}
}
return(true);
}
