private static LayoutUpdateEventHandler CreateLayoutUpdateHandler(Grid grid)
{
var prevCount = 0;
var prevColumn = grid.ColumnDefinitions.Count;
var prevRow = grid.RowDefinitions.Count;
var prevOrientation = GetAutoFillOrientation(grid);
var layoutUpdateCallback = new LayoutUpdateEventHandler((sender, args) =>
{
var count = grid.Children.Count;
var column = grid.ColumnDefinitions.Count;
var row = grid.RowDefinitions.Count;
var orientation = GetAutoFillOrientation(grid);
if (count != prevCount ||
column != prevColumn ||
row != prevRow ||
orientation != prevOrientation)
{
AutoFill(grid);
prevCount = count;
prevColumn = column;
prevRow = row;
prevOrientation = orientation;
}
});
return(layoutUpdateCallback);
}
private static void SetLayoutUpdatedCallback(DependencyObject obj, LayoutUpdateEventHandler value)
{
obj.SetValue(LayoutUpdatedCallbackProperty, value);
}