static void ButtonDataContextChanged(object sender, DependencyPropertyChangedEventArgs e)
{
var element = sender as FrameworkElement;
if (element == null)
{
return;
}
var jumpSupportData = GetJumpSupportData(element);
var methodPool = GetMethodPool(element);
var target = WPFOperate.GetChild <FrameworkElement>(element, jumpSupportData.TargetName);
if (target == null)
{
return;
}
Type type = methodPool.GetType();
MethodInfo info = type.GetMethod(jumpSupportData.MethodName);
object result = null;
if (jumpSupportData.ArgCount > 1)
{
var context2 = GetDataContextSource2(element);
result = info.Invoke(methodPool, new[] { element.DataContext, context2 });
}
else
{
result = info.Invoke(methodPool, new[] { element.DataContext });
}
PropertyInfo propertyInfo = target.GetType().GetProperty(jumpSupportData.TargetProperty);
propertyInfo.SetValue(target, result, new object[] { });
}
private static void OnIsEnabledChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
bool oldIsEnabled = (bool)e.OldValue;
bool newIsEnabled = (bool)d.GetValue(IsEnabledProperty);
var itemsControl = d as ItemsControl;
if (itemsControl == null)
{
return;
}
if (newIsEnabled)
{
itemsControl.Loaded += (ss, ee) =>
{
ScrollViewer scrollviewer = WPFOperate.GetChild <ScrollViewer>(itemsControl);
if (scrollviewer != null)
{
((ICollectionView)itemsControl.Items).CollectionChanged += (sss, eee) => scrollviewer.ScrollToEnd();
}
};
}
}
