protected override void OnSelectionChanged(SelectionChangedEventArgs e)
{
base.OnSelectionChanged(e);
bool isVirtualizing = VirtualizingPanel.GetIsVirtualizing(this);
bool isMultiSelect = this.SelectionMode != SelectionMode.Single;
if (isVirtualizing && isMultiSelect)
{
var newSelectedItems = this.SelectedItems.Cast <IListItemViewModel>().ToList();
foreach (var deselectedItem in this.selectedItems.Except(newSelectedItems))
{
deselectedItem.IsSelected = false;
}
this.selectedItems.Clear();
this.selectedItems.AddRange(newSelectedItems);
foreach (var newlySelectedItem in this.selectedItems)
{
newlySelectedItem.IsSelected = true;
}
}
}
// Token: 0x06005CFE RID: 23806 RVA: 0x001A2A4B File Offset: 0x001A0C4B
private void InvalidateDataGridCellsPanelMeasureAndArrange(bool withColumnVirtualization)
{
if (withColumnVirtualization == VirtualizingPanel.GetIsVirtualizing(this))
{
this.InvalidateDataGridCellsPanelMeasureAndArrange();
}
}
/// <summary>
/// Manually select the items...
/// </summary>
/// <param name="e">SelectionChangedEventArgs</param>
protected override void OnSelectionChanged(SelectionChangedEventArgs e)
{
base.OnSelectionChanged(e);
bool isVirtualizing = VirtualizingPanel.GetIsVirtualizing(this);
bool isMultiSelect = (SelectionMode != SelectionMode.Single);
if (isVirtualizing && isMultiSelect)
{
var newSelectedItems = SelectedItems.Cast <IScrobbableObjectViewModel>();
foreach (var deselectedItem in selectedItems.Except(newSelectedItems))
{
deselectedItem.UpdateIsSelectedSilent(false);
}
selectedItems.Clear();
selectedItems.AddRange(newSelectedItems);
foreach (var newlySelectedItem in selectedItems)
{
newlySelectedItem.UpdateIsSelectedSilent(true);
}
// todo: kinda hacky way to update the view...
var lastItem = selectedItems.LastOrDefault();
if (lastItem != null)
{
lastItem.IsSelected = true;
}
}
}
/// <summary>
/// Helper method which invalidate the underlying itemshost's measure and arrange
/// </summary>
/// <param name="withColumnVirtualization">
/// True to invalidate only when virtualization is on.
/// False to invalidate only when virtualization is off.
/// </param>
private void InvalidateDataGridCellsPanelMeasureAndArrange(bool withColumnVirtualization)
{
// Invalidates measure and arrange if the flag and the virtualization
// are either both true or both false.
if (withColumnVirtualization == VirtualizingPanel.GetIsVirtualizing(this))
{
InvalidateDataGridCellsPanelMeasureAndArrange();
}
}
