public void Restores_Selection_On_Items_Reset()
{
var items = new ResettingCollection(new[] { "foo", "bar", "baz" });
var model = new SelectionModel <string> {
Source = items
};
var target = new SelectedItemsSync(model);
model.SelectedIndex = 1;
items.Reset(new[] { "baz", "foo", "bar" });
Assert.Equal(2, model.SelectedIndex);
}
private static void SelectedItems_Changed(Selector selector, DpChangedEventArgs <IList> e)
{
SelectedItemsSync sync = GetSelectedItemsSync(selector);
if (sync != null)
{
sync.ModelSelectedItems = e.NewValue;
}
else
{
SetSelectedItemsSync(selector, new SelectedItemsSync(selector, e.NewValue));
selector.Unloaded += Selector_Unloaded;
}
}
private static SelectedItemsSync CreateTarget(
IEnumerable <string> items = null)
{
items ??= new[] { "foo", "bar", "baz" };
var model = new SelectionModel {
Source = items
};
model.SelectRange(new IndexPath(1), new IndexPath(2));
var target = new SelectedItemsSync(model);
return(target);
}
private static SelectedItemsSync CreateTarget(
IEnumerable <string> items = null)
{
items ??= new[] { "foo", "bar", "baz" };
var model = new SelectionModel <string> {
Source = items, SingleSelect = false
};
model.SelectRange(1, 2);
var target = new SelectedItemsSync(model);
return(target);
}
public void Handles_Null_Model_Source()
{
var model = new SelectionModel();
model.Select(1);
var target = new SelectedItemsSync(model);
var items = target.GetOrCreateItems();
Assert.Empty(items);
model.Select(2);
model.Source = new[] { "foo", "bar", "baz" };
Assert.Equal(new[] { "bar", "baz" }, items);
}
public void Selected_Items_Can_Be_Set_Before_SelectionModel_Source()
{
var model = new SelectionModel <string>();
var target = new SelectedItemsSync(model);
var items = new AvaloniaList <string> {
"foo", "bar", "baz"
};
var selectedItems = new AvaloniaList <string> {
"bar"
};
target.SelectedItems = selectedItems;
model.Source = items;
Assert.Equal(1, model.SelectedIndex);
}
public void Handles_Null_Model_Source()
{
var model = new SelectionModel <string> {
SingleSelect = false
};
model.Select(1);
var target = new SelectedItemsSync(model);
var items = target.SelectedItems;
Assert.Empty(items);
model.Select(2);
model.Source = new[] { "foo", "bar", "baz" };
Assert.Equal(new[] { "bar", "baz" }, items);
}
public TreeView()
{
// Setting Selection to null causes a default SelectionModel to be created.
Selection = null;
_selectedItems = new SelectedItemsSync(Selection);
}
private static void SetSelectedItemsSync(Selector d, SelectedItemsSync value)
{
d.SetValue(SelectedItemsSyncProperty, value);
}
private static void SetSelectedItemsSync (Selector d, SelectedItemsSync value)
{
d.SetValue(SelectedItemsSyncProperty, value);
}