/// <summary>
/// Creates a binding on a <see cref="Parameter"/>.
/// </summary>
/// <param name="target">The target to which the message is applied.</param>
/// <param name="parameter">The parameter object.</param>
/// <param name="elementName">The name of the element to bind to.</param>
/// <param name="path">The path of the element to bind to.</param>
/// <param name="bindingMode">The binding mode to use.</param>
public static void BindParameter(FrameworkElement target, Parameter parameter, string elementName, string path, BindingMode bindingMode)
{
#if XFORMS
var element = elementName == "$this" ? target : null;
if (element == null)
{
return;
}
if (string.IsNullOrEmpty(path))
{
path = ConventionManager.GetElementConvention(element.GetType()).ParameterProperty;
}
var binding = new Binding(path)
{
Source = element,
Mode = bindingMode
};
parameter.SetBinding(Parameter.ValueProperty, binding);
#else
var element = elementName == "$this"
? target
: BindingScope.GetNamedElements(target).FindName(elementName);
if (element == null)
{
return;
}
if (string.IsNullOrEmpty(path))
{
path = ConventionManager.GetElementConvention(element.GetType()).ParameterProperty;
}
#if WINDOWS_UWP
var binding = new Binding
{
Path = new PropertyPath(path),
Source = element,
Mode = bindingMode
};
#else
var binding = new Binding(path)
{
Source = element,
Mode = bindingMode
};
#endif
#if !WINDOWS_UWP
binding.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged;
#endif
BindingOperations.SetBinding(parameter, Parameter.ValueProperty, binding);
#endif
}
void ElementLoaded(object sender, RoutedEventArgs e)
{
UpdateContext();
DependencyObject currentElement;
if (context.View == null)
{
currentElement = AssociatedObject;
while (currentElement != null)
{
if (Action.HasTargetSet(currentElement))
{
break;
}
currentElement = BindingScope.GetVisualParent(currentElement);
}
}
else
{
currentElement = context.View;
}
#if NET || NETCORE
var binding = new Binding {
Path = new PropertyPath(Message.HandlerProperty),
Source = currentElement
};
#elif WINDOWS_UWP
var binding = new Binding {
Source = currentElement
};
#elif NET5_0_WINDOWS
const string bindingText = "<Binding xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation\' xmlns:cal='clr-namespace:Caliburn.Micro;assembly=Caliburn.Micro.Platform' Path='(cal:Message.Handler)' />";
StringReader stringReader = new StringReader(bindingText);
XmlReader xmlReader = XmlReader.Create(stringReader);
var binding = (Binding)XamlReader.Load(xmlReader);
binding.Source = currentElement;
#else
const string bindingText = "<Binding xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation\' xmlns:cal='clr-namespace:Caliburn.Micro;assembly=Caliburn.Micro.Platform' Path='(cal:Message.Handler)' />";
var binding = (Binding)XamlReader.Load(bindingText);
binding.Source = currentElement;
#endif
BindingOperations.SetBinding(this, HandlerProperty, binding);
}