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60 using Windows.UI.Input;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Input;
namespace File360
{
public static class SelectorItemEx
{
public static bool GetToggleSelectedOnHold(SelectorItem item)
{
return (bool)item.GetValue(ToggleSelectedOnHoldProperty);
}
public static void SetToggleSelectedOnHold(SelectorItem item, bool value)
{
item.SetValue(ToggleSelectedOnHoldProperty, value);
}
public static readonly DependencyProperty ToggleSelectedOnHoldProperty =
DependencyProperty.RegisterAttached(
"ToggleSelectedOnHold",
typeof(bool),
typeof(SelectorItemEx),
new PropertyMetadata(
false,
ToggleSelectedOnHoldChanged));
private static void ToggleSelectedOnHoldChanged(DependencyObject o, DependencyPropertyChangedEventArgs e)
{
var item = o as SelectorItem;
if (item == null)
return;
var oldValue = (bool)e.OldValue;
var newValue = (bool)e.NewValue;
if (oldValue && !newValue)
{
item.Holding -= Item_Holding;
}
else if (newValue && !oldValue)
{
item.Holding += Item_Holding;
}
}
private static void Item_Holding(object sender, HoldingRoutedEventArgs e)
{
var item = sender as SelectorItem;
if (item == null)
return;
if (e.HoldingState == HoldingState.Started)
item.IsSelected = !item.IsSelected;
}
}
}