/// <summary>
/// Process user-initiated sort operation
/// </summary>
/// <history>
/// [msellers] 5/17/2007 Added
/// </history>
protected void grdDocuments_Sorting(object sender, GridViewSortEventArgs e)
{
var objCustomSortList = new ArrayList();
var objCustomSortColumn = new DocumentsSortColumnInfo();
var objCustomSortDirecton = Models.SortDirection.Ascending;
var strSortDirectionString = "ASC";
// Set the sort column name
objCustomSortColumn.ColumnName = e.SortExpression;
// Determine if we need to reverse the sort. This is needed if an existing sort on the same column existed that was desc
if (ViewState ["CurrentSortOrder"] != null && ViewState ["CurrentSortOrder"].ToString() != string.Empty)
{
var existingSort = ViewState ["CurrentSortOrder"].ToString();
if (existingSort.StartsWith(e.SortExpression, StringComparison.InvariantCulture) &&
existingSort.EndsWith("ASC", StringComparison.InvariantCulture))
{
objCustomSortDirecton = Models.SortDirection.Descending;
strSortDirectionString = "DESC";
}
}
// Set the sort
objCustomSortColumn.Direction = objCustomSortDirecton;
objCustomSortList.Add(objCustomSortColumn);
var docComparer = new DocumentViewModelComparer(objCustomSortList);
Documents.Sort(docComparer.Compare);
grdDocuments.DataSource = Documents;
grdDocuments.DataBind();
// Save the sort to viewstate
ViewState ["CurrentSortOrder"] = e.SortExpression + " " + strSortDirectionString;
}
/// <summary>
/// If the datagrid was not sorted and bound via the "_Sort" method it will be bound at this time using
/// default values
/// </summary>
protected override void OnPreRender(EventArgs e)
{
base.OnPreRender(e);
// only bind if not a user selected sort
if (_documents == null)
{
// use DocumentComparer to do sort based on the default sort order
var docComparer = new DocumentViewModelComparer(Settings.GetSortColumnList());
Documents.Sort(docComparer.Compare);
grdDocuments.DataSource = Documents;
grdDocuments.DataBind();
}
Localization.LocalizeGridView(ref grdDocuments, LocalResourceFile);
}
List <DocumentViewModel> LoadDocuments()
{
var isAdmin = UserInfo.IsSuperUser || UserInfo.IsInRole("Administrators");
var cacheKey = ModuleSynchronizer.GetDataCacheKey(ModuleId, TabModuleId);
var documents = DataCache.GetCachedData <IEnumerable <DocumentViewModel> > (
new CacheItemArgs(cacheKey, 1200, CacheItemPriority.Normal),
c => LoadDocuments_Internal()
);
// remove unpublished and inaccessible documents from the list
// TODO: Add test to check filtering logic
var filteredDocuments = documents
.Where(d =>
(IsEditable || d.IsPublished(HttpContext.Current.Timestamp)) &&
(isAdmin || CanView(d.Url)))
.ToList();
// sort documents
var docComparer = new DocumentViewModelComparer(Settings.GetSortColumnList());
filteredDocuments.Sort(docComparer.Compare);
return(filteredDocuments);
}
