protected virtual void OnSelectedSortOrderFunctionChanged(SortOrderFunction oldSelectedSortOrderFunction,
SortOrderFunction newSelectedSortOrderFunction)
{
RaisePropertyChanged("SelectedSortOrderFunction", oldSelectedSortOrderFunction, newSelectedSortOrderFunction);
//set preferred direction for specific order function
//block search updates while setting direction
blockUpdateSearchSorting = true;
switch (newSelectedSortOrderFunction.EnumValue)
{
case SortOrder.relevance:
case SortOrder.date:
IsAscendingSelected = false;
IsDescendingSelected = true;
break;
case SortOrder.title:
case SortOrder.author:
IsAscendingSelected = true;
IsDescendingSelected = false;
break;
}
blockUpdateSearchSorting = false;
//update search
UpdateSearchSorting(newSelectedSortOrderFunction.EnumValue, SelectedSortDirection);
}
private void UpdateShelfContentInfo(Page page, SortOrderFunction order, SortDirection direction)
{
Info.Text = null;
Info.From = null;
Info.To = null;
if (page.Hits.Count > 0)
{
if (order.EnumValue == SortOrder.relevance)
{
Info.Text = HBS.Search.SearchText;
}
else
{
//get first and last valid value
var first = page.Hits.FirstOrDefault(hit => order.HasProperty(hit));
var last = page.Hits.LastOrDefault(hit => order.HasProperty(hit));
//get string representatives
var firstString = "";
if (first != null)
{
firstString = order.GetRepresentative(first);
}
var lastString = "";
if (last != null)
{
lastString = order.GetRepresentative(last);
}
//set info properties
Info.From = firstString;
Info.To = lastString;
}
}
IsInfoVisible = !string.IsNullOrEmpty(Info.From) || !string.IsNullOrEmpty(Info.To);
}
public static SortOrderFunction GetSingleton(SortOrder order)
{
SortOrderFunction func = null;
if (!SORT_ORDER_FUNCTION_SINGELTONS.TryGetValue(order, out func))
{
func = new SortOrderFunction(order);
SORT_ORDER_FUNCTION_SINGELTONS.Add(order, func);
}
return(func);
}