private static MethodInfo GetInvokeMethod(CommandBehaviorBinding behavior)
{
var owner = ((FrameworkElement)behavior.Owner);
var dataContext = ((FrameworkElement)behavior.Owner).DataContext;
object obj = behavior.InvokeObject is Type ? null : (behavior.InvokeObject == null ? dataContext : null);
Type type = behavior.InvokeObject is Type ? (Type)behavior.InvokeObject : (behavior.InvokeObject != null ? behavior.InvokeObject.GetType() : dataContext.GetType());
var flags = behavior.InvokeObject is Type ? BindingFlags.Static : BindingFlags.Instance;
var key = behavior.InvokeMethodName + "(object); " + type.AssemblyQualifiedName;
if (StaticMethodInfoCache.ContainsKey(key))
{
return(StaticMethodInfoCache[key]);
}
var method = type.GetMethod(behavior.InvokeMethodName, flags | BindingFlags.Public, null, new[] { typeof(object) }, null);
if (method != null)
{
StaticMethodInfoCache.Add(key, method);
return(method);
}
#region Search private method. need full trust!
method = type.GetMethod(behavior.InvokeMethodName, flags | BindingFlags.NonPublic, null, new[] { typeof(object) }, null);
if (method != null)
{
Debug.WriteLine("=>" + string.Format("KsWare.AttachedBehavior Warning: '{0}(object)' method should be public on '{3}' ''{1}' (HashCode={2})'",
behavior.InvokeMethodName,
type.Name,
(obj != null ? obj.GetHashCode().ToString() : ""),
obj != null ? "object":"type"
));
StaticMethodInfoCache.Add(key, method);
return(method);
}
#endregion
Debug.WriteLine("=>" + ($"KsWare.AttachedBehavior Error: public '{behavior.InvokeMethodName}(object)' method not found on 'object' ''{owner.DataContext.GetType().Name}' (HashCode={owner.DataContext.GetHashCode()})'" +
$"; target element is '{owner.GetType().Name}' (Name='{owner.Name}')" +
"; target property is 'Invoke' (type 'String')"));
//throw new MissingMethodException( ((FrameworkElement) d).DataContext.GetType().Name,methodName);
StaticMethodInfoCache.Add(key, null);
return(null);
}
/// <summary> Handles changes to the Action property.
/// </summary>
private static void OnActionChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
CommandBehaviorBinding binding = FetchOrCreateBinding(d);
binding.Action = (Action <object>)e.NewValue;
}
/// <summary> Handles changes to the Command property.
/// </summary>
private static void OnCommandChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
CommandBehaviorBinding binding = FetchOrCreateBinding(d);
binding.Command = (ICommand)e.NewValue;
}
/// <summary> Handles changes to the InvokeMethod property.
/// </summary>
private static void OnInvokeMethodChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
CommandBehaviorBinding binding = FetchOrCreateBinding(d);
binding.InvokeMethodName = (string)e.NewValue;
}
