internal static Selection SelectAll(EditingContext context, bool local)
{
if (context == null)
{
throw new ArgumentNullException("context");
}
ModelService requiredService = context.Services.GetRequiredService <ModelService>();
Selection s = context.Items.GetValue <Selection>();
Selection selection = new Selection();
ModelItem primarySelection = s.PrimarySelection;
if (local && primarySelection != null)
{
if (!SelectionImplementation.IsMultiSelection(s) && primarySelection.Content != (ModelProperty)null)
{
selection = SelectionImplementation.SelectContent(primarySelection);
if (selection.PrimarySelection == null && primarySelection.Parent != null)
{
selection = SelectionImplementation.SelectContent(primarySelection.Parent);
}
}
else if (SelectionImplementation.AreSiblings(s))
{
selection = SelectionImplementation.SelectContent(primarySelection.Parent);
}
}
if (selection.PrimarySelection == null)
{
selection = new Selection(SelectionImplementation.EnumerateContents(requiredService.Root));
}
context.Items.SetValue((ContextItem)selection);
return(selection);
}
private static IEnumerable <ModelItem> EnumerateContents(ModelItem start)
{
if (SelectionImplementation.IsSelectable(start))
{
yield return(start);
ModelProperty content = start.Content;
if (content != (ModelProperty)null && content.IsSet)
{
if (content.IsCollection)
{
foreach (ModelItem start1 in content.Collection)
{
foreach (ModelItem modelItem in SelectionImplementation.EnumerateContents(start1))
{
yield return(modelItem);
}
}
}
else
{
ModelItem value = content.Value;
if (value != null)
{
foreach (ModelItem modelItem in SelectionImplementation.EnumerateContents(value))
{
yield return(modelItem);
}
}
}
}
}
}
