static void AdjustColumns(ListView listView)
{
if (ListViewManager.GetAutoSizeColumns(listView))
{
var gv = Ensure.That(listView.View as GridView)
.WithMessage("This behavior can be attached only to ListView(s) whose view is a GridView.")
.IsNotNull()
.GetValue();
var columnsToStretch = gv.Columns.Where(c => GridViewColumnManager.GetFill(c));
if (columnsToStretch.Any())
{
var subtract = .0d;
var sv = VisualTreeCrawler.FindChild <ScrollViewer>(listView);
if (sv != null && sv.ComputedVerticalScrollBarVisibility == Visibility.Visible)
{
var sb = VisualTreeCrawler.FindChild <ScrollBar>(sv, child => child.Orientation == Orientation.Vertical);
if (sb != null)
{
subtract = sb.Width;
}
}
var nonStretchedColumnsActualWidth = gv.Columns
.Where(c => !GridViewColumnManager.GetFill(c))
.Aggregate(0d, (w, c) =>
{
w += c.ActualWidth;
return(w);
});
var availableWidth = listView.ActualWidth - subtract - nonStretchedColumnsActualWidth;
if (availableWidth <= 0)
{
logger.Warning
(
"Columns cannot be auto sized, available size is invalid: {0}",
availableWidth
);
}
if (availableWidth > 0)
{
var columnsAvarageWidth = availableWidth / columnsToStretch.Count();
foreach (var column in columnsToStretch)
{
column.Width = columnsAvarageWidth;
}
}
}
}
}
private static void OnSortCommandChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (!DesignTimeHelper.GetIsInDesignMode())
{
var listView = Ensure.That(d as ListView)
.Named("d")
.WithMessage("This behavior can be attached only to ListView(s).")
.IsNotNull()
.GetValue();
if (!ListViewManager.GetIsLoadEventAttached(listView))
{
listView.Loaded += onLoaded;
ListViewManager.SetIsLoadEventAttached(listView, true);
}
}
}
