/// <summary>
/// Updates the filter state.
/// </summary>
protected virtual void UpdateFilterInternal()
{
FilterDelegate <T> filter = Filter;
if (filter == FilterableItemsSource.Filter)
{
FilterableItemsSource.UpdateFilter();
}
else
{
FilterableItemsSource.Filter = filter;
}
if (SelectedItem != null && filter != null && !filter(SelectedItem))
{
SelectedItem = null;
}
}
/// <summary>
/// Updates the current <see cref="IGridViewModel{T}.ItemsSource" />.
/// </summary>
/// <param name="value">The new items source value.</param>
protected virtual void UpdateItemsSourceInternal(IEnumerable <T> value)
{
value = OnItemsSourceChanging(value);
SelectedItem = null;
if (value == null)
{
_originalData.Clear();
}
else
{
using (FilterableItemsSource.SuspendNotifications())
{
_originalData.Clear();
_originalData.AddRange(value);
}
}
UpdateFilter();
OnItemsSourceChanged(value);
RaiseItemsSourceChanged(value);
OnPropertyChanged("ItemsSource");
OnPropertyChanged("OriginalItemsSource");
}
