internal Visibility GetRowDetailsVisibility(int rowIndex, DataGridRowDetailsVisibilityMode gridLevelRowDetailsVisibility)
{
Debug.Assert(rowIndex != -1);
if (_showDetailsTable.Contains(rowIndex))
{
// The user explicity set DetailsVisibility on a row so we should respect that
return _showDetailsTable.GetValueAt(rowIndex);
}
else
{
if (gridLevelRowDetailsVisibility == DataGridRowDetailsVisibilityMode.Visible ||
(gridLevelRowDetailsVisibility == DataGridRowDetailsVisibilityMode.VisibleWhenSelected &&
_selectedItems.ContainsSlot(SlotFromRowIndex(rowIndex))))
{
return Visibility.Visible;
}
else
{
return Visibility.Collapsed;
}
}
}
private void UpdateRowDetailsVisibilityMode(DataGridRowDetailsVisibilityMode newDetailsMode)
{
int itemCount = this.DataConnection.Count;
if (this._rowsPresenter != null && itemCount > 0)
{
Visibility newDetailsVisibility = Visibility.Collapsed;
switch (newDetailsMode)
{
case DataGridRowDetailsVisibilityMode.Visible:
newDetailsVisibility = Visibility.Visible;
this._showDetailsTable.AddValues(0, itemCount, Visibility.Visible);
break;
case DataGridRowDetailsVisibilityMode.Collapsed:
newDetailsVisibility = Visibility.Collapsed;
this._showDetailsTable.AddValues(0, itemCount, Visibility.Collapsed);
break;
case DataGridRowDetailsVisibilityMode.VisibleWhenSelected:
this._showDetailsTable.Clear();
break;
}
bool updated = false;
foreach (DataGridRow row in this.GetAllRows())
{
if (row.Visibility == Visibility.Visible)
{
if (newDetailsMode == DataGridRowDetailsVisibilityMode.VisibleWhenSelected)
{
// For VisibleWhenSelected, we need to calculate the value for each individual row
newDetailsVisibility = this._selectedItems.ContainsSlot(row.Slot) ? Visibility.Visible : Visibility.Collapsed;
}
if (row.DetailsVisibility != newDetailsVisibility)
{
updated = true;
row.SetDetailsVisibilityInternal(newDetailsVisibility, true /* raiseNotification */, false /* animate */);
}
}
}
if (updated)
{
UpdateDisplayedRows(this.DisplayData.FirstScrollingSlot, this.CellsHeight);
InvalidateRowsMeasure(false /*invalidateIndividualElements*/);
}
}
}
public static T RowDetailsVisibilityMode <T>(this T target, DataGridRowDetailsVisibilityMode value) where T : DataGrid
{
target.RowDetailsVisibilityMode = value;
return(target);
}
