private static void DoDataSourceRequestRefining(DataSourceRequest request, Kendo.Mvc.Infrastructure.Implementation.FilterDescriptorCollection filterDescriptorCollection, Type viewModelType)
{
IFilterDescriptor filterItem = null;
foreach (var item in filterDescriptorCollection)
{
filterItem = item as Kendo.Mvc.FilterDescriptor;
if (filterItem == null)
{
var compFilterItem = item as Kendo.Mvc.CompositeFilterDescriptor;
if (CheckIfFilteritemIsFromViewModel((compFilterItem.FilterDescriptors[0] as Kendo.Mvc.FilterDescriptor).Member, viewModelType))
{
_viewModelFilterItems.Add(compFilterItem);
}
}
else if (CheckIfFilteritemIsFromViewModel((filterItem as Kendo.Mvc.FilterDescriptor).Member, viewModelType))
{
//Adding ViewModel filter to its respective list.
_viewModelFilterItems.Add(filterItem);
}
}
if (_viewModelFilterItems.Count != 0)
{
foreach (var fiItem in _viewModelFilterItems)
{
//TODO: Omit the filter descriptor entry from DataSourceRequest
RemoveFilterDescriptorFromDataSourceResult(request, fiItem);
}
}
}
/// <summary>
/// Investigates for the fields which are not in Model but in its respective ViewModel , and clears the incoming DataSourceRequest from the fields which are not going to be used in
/// the Query parsing based on Model fields and , eventually , returns DataSourceRequest object which solely include ViewModel fields.
/// </summary>
/// <typeparam name="TModel"></typeparam>
/// <typeparam name="ViewModel.IViewModel<TModel>"></typeparam>
/// <param name="request"></param>
/// <returns></returns>
private static IEnumerable <Kendo.Mvc.IFilterDescriptor> RefineDataSource(this DataSourceRequest request, Type entityViewModelType)
{
_viewModelFilterItems = new List <Kendo.Mvc.IFilterDescriptor>();
var viewModelFields = entityViewModelType;
if (typeof(IViewModel).IsAssignableFrom(entityViewModelType))
{
var filters = (request.Filters as List <Kendo.Mvc.IFilterDescriptor>);
foreach (var filterItem in filters)
{
if (filterItem is Kendo.Mvc.CompositeFilterDescriptor)
{
var filterDescriptors = (filterItem as Kendo.Mvc.CompositeFilterDescriptor).FilterDescriptors;
DoDataSourceRequestRefining(request, filterDescriptors, entityViewModelType);
var compositeFilterDescriptor = filterItem as Kendo.Mvc.CompositeFilterDescriptor;
}
else if (filterItem is Kendo.Mvc.FilterDescriptor)
{
var filterCollection = new Kendo.Mvc.Infrastructure.Implementation.FilterDescriptorCollection();
filterCollection.Add(filterItem as Kendo.Mvc.FilterDescriptor);
DoDataSourceRequestRefining(request, filterCollection, entityViewModelType);
break;
}
}
}
return(_viewModelFilterItems);
}
public static Dictionary <string, object> GetFilterValues(this List <Kendo.Mvc.IFilterDescriptor> Filters)
{
var dictionary = new Dictionary <string, object>();
var rootFilterItem = (Filters as List <Kendo.Mvc.IFilterDescriptor>).First();
if (rootFilterItem is Kendo.Mvc.CompositeFilterDescriptor)
{
Kendo.Mvc.Infrastructure.Implementation.FilterDescriptorCollection filterDescriptors = (rootFilterItem as Kendo.Mvc.CompositeFilterDescriptor).FilterDescriptors;
DataSourceRequestValueExtensions.ExtractCompositeFilterDescriptorValues(dictionary, filterDescriptors);
}
else if (rootFilterItem is Kendo.Mvc.FilterDescriptor)
{
Kendo.Mvc.FilterDescriptor simpleItem = (Kendo.Mvc.FilterDescriptor)rootFilterItem;
DataSourceRequestValueExtensions.ExtractSimpleFilterDescriptorValues(dictionary, simpleItem);
}
return(dictionary);
}
private static void ExtractCompositeFilterDescriptorValues(Dictionary <string, object> dictionary, Kendo.Mvc.Infrastructure.Implementation.FilterDescriptorCollection filterDescriptors)
{
foreach (var filterItem in filterDescriptors)
{
if (filterItem is Kendo.Mvc.CompositeFilterDescriptor)
{
var fDescriptors = (filterItem as Kendo.Mvc.CompositeFilterDescriptor).FilterDescriptors;
ExtractCompositeFilterDescriptorValues(dictionary, fDescriptors);
}
else if (filterItem is Kendo.Mvc.FilterDescriptor)
{
var sItem = (Kendo.Mvc.FilterDescriptor)filterItem;
ExtractSimpleFilterDescriptorValues(dictionary, sItem);
}
}
}
