private static void OnListViewHeaderClick(object sender, RoutedEventArgs e)
{
ListView listView = e.Source as ListView;
GridViewColumnHeader header = e.OriginalSource as GridViewColumnHeader;
if (header == null || header.Role == GridViewColumnHeaderRole.Padding)
{
return;
}
SortInfo sortInfo = listView.GetValue(SortInfoProperty.DependencyProperty) as SortInfo;
if (sortInfo != null)
{
AdornerLayer.GetAdornerLayer(sortInfo.LastSortColumn).Remove(sortInfo.CurrentAdorner);
listView.Items.SortDescriptions.Clear();
}
else
{
sortInfo = new SortInfo();
}
if (sortInfo.LastSortColumn == header)
{
(sortInfo.CurrentAdorner.Child as ListSortDecorator).SortDirection = (sortInfo.CurrentAdorner.Child as ListSortDecorator).SortDirection == ListSortDirection.Ascending ? ListSortDirection.Descending : ListSortDirection.Ascending;
}
else
{
sortInfo.CurrentAdorner = new VisualAdorner(header, new ListSortDecorator());
}
sortInfo.LastSortColumn = header;
listView.SetValue(SortInfoProperty, sortInfo);
AdornerLayer.GetAdornerLayer(header).Add(sortInfo.CurrentAdorner);
SortDescription sortDescriptioin = new SortDescription()
{
Direction = (sortInfo.CurrentAdorner.Child as ListSortDecorator).SortDirection,
PropertyName = header.Column.GetValue(SortFieldProperty) as string ?? header.Column.Header as string
};
listView.Items.SortDescriptions.Add(sortDescriptioin);
}
private static void InitializeSortDirection(ListView listView)
{
#region Guards
var dataSource = listView.ItemsSource;
if (dataSource == null)
{
return;
}
var dataview = CollectionViewSource.GetDefaultView(dataSource);
if (dataview == null || dataview.SortDescriptions.Count == 0)
{
return;
}
SortInfo sortInfo = listView.GetValue(SortInfoProperty.DependencyProperty) as SortInfo;
if (sortInfo != null)
{
return;
}
#endregion
foreach (var columnHeader in listView.FindChildren <GridViewColumnHeader>(h => h.Role != GridViewColumnHeaderRole.Padding))
{
if (columnHeader.Column != null && dataview.SortDescriptions.Count > 0 &&
dataview.SortDescriptions[0].PropertyName.Equals(GetSortField(columnHeader.Column)))
{
sortInfo = new SortInfo();
sortInfo.LastSortColumn = columnHeader;
sortInfo.CurrentAdorner = new VisualAdorner(columnHeader, new ListSortDecorator());
AdornerLayer.GetAdornerLayer(columnHeader).Add(sortInfo.CurrentAdorner);
listView.SetValue(SortInfoProperty, sortInfo);
break;
}
}
}
internal static void SetSortInfo(DependencyObject obj, SortInfo value)
{
obj.SetValue(SortInfoProperty.DependencyProperty, value);
}
private static void InitializeSortDirection(ListView listView)
{
#region Guards
var dataSource = listView.ItemsSource;
if (dataSource == null)
return;
var dataview = CollectionViewSource.GetDefaultView(dataSource);
if (dataview == null || dataview.SortDescriptions.Count == 0)
return;
SortInfo sortInfo = listView.GetValue(SortInfoProperty.DependencyProperty) as SortInfo;
if (sortInfo != null)
return;
#endregion
foreach (var columnHeader in listView.FindChildren<GridViewColumnHeader>(h => h.Role != GridViewColumnHeaderRole.Padding))
{
if (columnHeader.Column != null && dataview.SortDescriptions.Count > 0 &&
dataview.SortDescriptions[0].PropertyName.Equals(GetSortField(columnHeader.Column)))
{
sortInfo = new SortInfo();
sortInfo.LastSortColumn = columnHeader;
sortInfo.CurrentAdorner = new VisualAdorner(columnHeader, new ListSortDecorator());
AdornerLayer.GetAdornerLayer(columnHeader).Add(sortInfo.CurrentAdorner);
listView.SetValue(SortInfoProperty, sortInfo);
break;
}
}
}
internal static void SetSortInfo(DependencyObject obj, SortInfo value)
{
obj.SetValue(SortInfoProperty.DependencyProperty, value);
}
private static void OnListViewHeaderClick(object sender, RoutedEventArgs e)
{
ListView listView = e.Source as ListView;
GridViewColumnHeader header = e.OriginalSource as GridViewColumnHeader;
if (header == null || header.Role == GridViewColumnHeaderRole.Padding)
{
return;
}
SortInfo sortInfo = listView.GetValue(SortInfoProperty.DependencyProperty) as SortInfo;
if (sortInfo != null)
{
AdornerLayer.GetAdornerLayer(sortInfo.LastSortColumn).Remove(sortInfo.CurrentAdorner);
listView.Items.SortDescriptions.Clear();
}
else
sortInfo = new SortInfo();
if (sortInfo.LastSortColumn == header)
(sortInfo.CurrentAdorner.Child as ListSortDecorator).SortDirection = (sortInfo.CurrentAdorner.Child as ListSortDecorator).SortDirection == ListSortDirection.Ascending ? ListSortDirection.Descending : ListSortDirection.Ascending;
else
sortInfo.CurrentAdorner = new VisualAdorner(header, new ListSortDecorator());
sortInfo.LastSortColumn = header;
listView.SetValue(SortInfoProperty, sortInfo);
AdornerLayer.GetAdornerLayer(header).Add(sortInfo.CurrentAdorner);
SortDescription sortDescriptioin = new SortDescription()
{
Direction = (sortInfo.CurrentAdorner.Child as ListSortDecorator).SortDirection,
PropertyName = header.Column.GetValue(SortFieldProperty) as string ?? header.Column.Header as string
};
listView.Items.SortDescriptions.Add(sortDescriptioin);
}
